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  • Mice, Inbred C57BL  (470)
  • Molecular Sequence Data  (463)
  • Nature Publishing Group (NPG)  (920)
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  • 1
    Publication Date: 2016-01-28
    Description: Seagrasses colonized the sea on at least three independent occasions to form the basis of one of the most productive and widespread coastal ecosystems on the planet. Here we report the genome of Zostera marina (L.), the first, to our knowledge, marine angiosperm to be fully sequenced. This reveals unique insights into the genomic losses and gains involved in achieving the structural and physiological adaptations required for its marine lifestyle, arguably the most severe habitat shift ever accomplished by flowering plants. Key angiosperm innovations that were lost include the entire repertoire of stomatal genes, genes involved in the synthesis of terpenoids and ethylene signalling, and genes for ultraviolet protection and phytochromes for far-red sensing. Seagrasses have also regained functions enabling them to adjust to full salinity. Their cell walls contain all of the polysaccharides typical of land plants, but also contain polyanionic, low-methylated pectins and sulfated galactans, a feature shared with the cell walls of all macroalgae and that is important for ion homoeostasis, nutrient uptake and O2/CO2 exchange through leaf epidermal cells. The Z. marina genome resource will markedly advance a wide range of functional ecological studies from adaptation of marine ecosystems under climate warming, to unravelling the mechanisms of osmoregulation under high salinities that may further inform our understanding of the evolution of salt tolerance in crop plants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olsen, Jeanine L -- Rouze, Pierre -- Verhelst, Bram -- Lin, Yao-Cheng -- Bayer, Till -- Collen, Jonas -- Dattolo, Emanuela -- De Paoli, Emanuele -- Dittami, Simon -- Maumus, Florian -- Michel, Gurvan -- Kersting, Anna -- Lauritano, Chiara -- Lohaus, Rolf -- Topel, Mats -- Tonon, Thierry -- Vanneste, Kevin -- Amirebrahimi, Mojgan -- Brakel, Janina -- Bostrom, Christoffer -- Chovatia, Mansi -- Grimwood, Jane -- Jenkins, Jerry W -- Jueterbock, Alexander -- Mraz, Amy -- Stam, Wytze T -- Tice, Hope -- Bornberg-Bauer, Erich -- Green, Pamela J -- Pearson, Gareth A -- Procaccini, Gabriele -- Duarte, Carlos M -- Schmutz, Jeremy -- Reusch, Thorsten B H -- Van de Peer, Yves -- England -- Nature. 2016 Feb 18;530(7590):331-5. doi: 10.1038/nature16548. Epub 2016 Jan 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Groningen Institute of Evolutionary Life Sciences (GELIFES), University of Groningen, PO Box 11103, 9700 CC Groningen, The Netherlands. ; Department of Plant Systems Biology, VIB and Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, B-9052 Ghent, Belgium. ; GEOMAR Helmholtz Centre for Ocean Research-Kiel, Evolutionary Ecology, Dusternbrooker Weg 20, D-24105 Kiel, Germany. ; Sorbonne Universite, UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, F-29688, Roscoff cedex, France. ; Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy. ; Dipartimento di Scienze Agrarie e Ambientali, University of Udine, Via delle Scienze 206, 33100 Udine, Italy. ; INRA, UR1164 URGI-Research Unit in Genomics-Info, INRA de Versailles-Grignon, Route de Saint-Cyr, Versailles 78026, France. ; Institute for Evolution and Biodiversity, Westfalische Wilhelms-University of Munster, Hufferstrasse 1, D-48149 Munster, Germany. ; Institute for Computer Science, Heinrich Heine University, D-40255 Duesseldorf, Germany. ; Department of Biological and Environmental Sciences, Bioinformatics Infrastructure for Life Sciences (BILS), University of Gothenburg, Medicinaregatan 18A, 40530 Gothenburg, Sweden. ; Department of Energy Joint Genome Institute, 2800 Mitchell Dr., #100, Walnut Creek, California 94598, USA. ; Environmental and Marine Biology, Faculty of Science and Engineering, Abo Akademi University, Artillerigatan 6, FI-20520 Turku/Abo, Finland. ; HudsonAlpha Institute for Biotechnology, 601 Genome Way NW, Huntsville, Alabama 35806, USA. ; Marine Ecology Group, Nord University, Postbox 1490, 8049 Bodo, Norway. ; Amplicon Express, 2345 NE Hopkins Ct., Pullman, Washington 99163, USA. ; School of Marine Science and Policy, Department of Plant and Soil Sciences, Delaware Biotechnology Institute, University of Delaware, 15-Innovation Way, Newark, Delaware 19711, USA. ; Marine Ecology and Evolution, Centre for Marine Sciences (CCMAR), University of Algarve, 8005-139 Faro, Portugal. ; King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Thuwal 23955-6900, Saudi Arabia. ; University of Kiel, Faculty of Mathematics and Natural Sciences, Christian-Albrechts-Platz 4, 24118 Kiel, Germany. ; Genomics Research Institute, University of Pretoria, Hatfield Campus, Pretoria 0028, South Africa. ; Bioinformatics Institute Ghent, Ghent University, Ghent B-9000, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26814964" target="_blank"〉PubMed〈/a〉
    Keywords: Acclimatization/genetics ; Adaptation, Physiological/*genetics ; Cell Wall/chemistry ; Ethylenes/biosynthesis ; *Evolution, Molecular ; Gene Duplication ; Genes, Plant/genetics ; Genome, Plant/*genetics ; Metabolic Networks and Pathways ; Molecular Sequence Data ; Oceans and Seas ; Osmoregulation/genetics ; Phylogeny ; Plant Leaves/metabolism ; Plant Stomata/genetics ; Pollen/metabolism ; Salinity ; Salt-Tolerance/genetics ; *Seawater ; Seaweed/genetics ; Terpenes/metabolism ; Zosteraceae/*genetics
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  • 2
    Publication Date: 2016-01-07
    Description: Endothelial cells (ECs) are plastic cells that can switch between growth states with different bioenergetic and biosynthetic requirements. Although quiescent in most healthy tissues, ECs divide and migrate rapidly upon proangiogenic stimulation. Adjusting endothelial metabolism to the growth state is central to normal vessel growth and function, yet it is poorly understood at the molecular level. Here we report that the forkhead box O (FOXO) transcription factor FOXO1 is an essential regulator of vascular growth that couples metabolic and proliferative activities in ECs. Endothelial-restricted deletion of FOXO1 in mice induces a profound increase in EC proliferation that interferes with coordinated sprouting, thereby causing hyperplasia and vessel enlargement. Conversely, forced expression of FOXO1 restricts vascular expansion and leads to vessel thinning and hypobranching. We find that FOXO1 acts as a gatekeeper of endothelial quiescence, which decelerates metabolic activity by reducing glycolysis and mitochondrial respiration. Mechanistically, FOXO1 suppresses signalling by MYC (also known as c-MYC), a powerful driver of anabolic metabolism and growth. MYC ablation impairs glycolysis, mitochondrial function and proliferation of ECs while its EC-specific overexpression fuels these processes. Moreover, restoration of MYC signalling in FOXO1-overexpressing endothelium normalizes metabolic activity and branching behaviour. Our findings identify FOXO1 as a critical rheostat of vascular expansion and define the FOXO1-MYC transcriptional network as a novel metabolic checkpoint during endothelial growth and proliferation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilhelm, Kerstin -- Happel, Katharina -- Eelen, Guy -- Schoors, Sandra -- Oellerich, Mark F -- Lim, Radiance -- Zimmermann, Barbara -- Aspalter, Irene M -- Franco, Claudio A -- Boettger, Thomas -- Braun, Thomas -- Fruttiger, Marcus -- Rajewsky, Klaus -- Keller, Charles -- Bruning, Jens C -- Gerhardt, Holger -- Carmeliet, Peter -- Potente, Michael -- K08CA090438/CA/NCI NIH HHS/ -- Cancer Research UK/United Kingdom -- England -- Nature. 2016 Jan 14;529(7585):216-20. doi: 10.1038/nature16498. Epub 2016 Jan 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Angiogenesis &Metabolism Laboratory, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany. ; Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, Department of Oncology, University of Leuven, Leuven 3000, Belgium. ; Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, VIB, Leuven 3000, Belgium. ; Vascular Biology Laboratory, London Research Institute, Cancer Research UK, London WC2A 3LY, UK. ; Vascular Morphogenesis Laboratory, Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Lisbon 1649-028, Portugal. ; Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany. ; UCL Institute of Ophthalmology, University College London, London EC1V 9EL, UK. ; Max Delbruck Center for Molecular Medicine (MDC), D-13125 Berlin, Germany. ; Children's Cancer Therapy Development Institute, Beaverton, Oregon 97005, USA. ; Max Planck Institute for Metabolism Research, Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), Center for Endocrinology, Diabetes and Preventive Medicine (CEDP), University of Cologne, D-50931 Cologne, Germany. ; Vascular Patterning Laboratory, Vesalius Research Center, VIB and University of Leuven, Leuven 3000, Belgium. ; DZHK (German Center for Cardiovascular Research), partner site Berlin, D-13347 Berlin, Germany. ; Berlin Institute of Health (BIH), D-10117 Berlin, Germany. ; International Institute of Molecular and Cell Biology, 02-109 Warsaw, Poland. ; DZHK (German Center for Cardiovascular Research), partner site Frankfurt Rhine-Main, D-13347 Berlin, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26735015" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Proliferation ; Cell Respiration ; Endothelium, Vascular/cytology/*growth & development/*metabolism ; Female ; Forkhead Transcription Factors/deficiency/genetics/*metabolism ; Glycolysis ; Human Umbilical Vein Endothelial Cells/cytology/metabolism ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Proto-Oncogene Proteins c-myc/deficiency/genetics/metabolism ; Signal Transduction
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  • 3
    Publication Date: 2016-04-14
    Description: Bone marrow endothelial cells (BMECs) form a network of blood vessels that regulate both leukocyte trafficking and haematopoietic stem and progenitor cell (HSPC) maintenance. However, it is not clear how BMECs balance these dual roles, and whether these events occur at the same vascular site. We found that mammalian bone marrow stem cell maintenance and leukocyte trafficking are regulated by distinct blood vessel types with different permeability properties. Less permeable arterial blood vessels maintain haematopoietic stem cells in a low reactive oxygen species (ROS) state, whereas the more permeable sinusoids promote HSPC activation and are the exclusive site for immature and mature leukocyte trafficking to and from the bone marrow. A functional consequence of high permeability of blood vessels is that exposure to blood plasma increases bone marrow HSPC ROS levels, augmenting their migration and differentiation, while compromising their long-term repopulation and survival. These findings may have relevance for clinical haematopoietic stem cell transplantation and mobilization protocols.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Itkin, Tomer -- Gur-Cohen, Shiri -- Spencer, Joel A -- Schajnovitz, Amir -- Ramasamy, Saravana K -- Kusumbe, Anjali P -- Ledergor, Guy -- Jung, Yookyung -- Milo, Idan -- Poulos, Michael G -- Kalinkovich, Alexander -- Ludin, Aya -- Kollet, Orit -- Shakhar, Guy -- Butler, Jason M -- Rafii, Shahin -- Adams, Ralf H -- Scadden, David T -- Lin, Charles P -- Lapidot, Tsvee -- EB017274/EB/NIBIB NIH HHS/ -- HL100402/HL/NHLBI NIH HHS/ -- R01 EB017274/EB/NIBIB NIH HHS/ -- U01 HL100402/HL/NHLBI NIH HHS/ -- England -- Nature. 2016 Apr 21;532(7599):323-8. doi: 10.1038/nature17624. Epub 2016 Apr 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, The Weizmann Institute of Science, Rehovot 76100, Israel. ; Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA. ; Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA. ; Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; Harvard Stem Cell Institute, Cambridge, Massachusetts 02114, USA. ; Center for Regenerative Medicine and Cancer Center, Massachusetts General Hospital, Boston, Massachusetts 02114, USA. ; Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis and Faculty of Medicine, University of Munster, D-48149 Munster, Germany. ; Internal Medicine Department, Tel-Aviv Sourasky Medical Center, Tel-Aviv 64239, Israel. ; Department of Genetic Medicine, Weill Cornell Medical College, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27074509" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Ly/metabolism ; Arteries/cytology/physiology ; Blood Vessels/*cytology/*physiology ; Bone Marrow/*blood supply ; Bone Marrow Cells/cytology ; Cell Differentiation ; Cell Movement ; Cell Self Renewal ; Cell Survival ; Chemokine CXCL12/metabolism ; Endothelial Cells/physiology ; Female ; *Hematopoiesis ; Hematopoietic Stem Cell Mobilization ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/cytology ; Leukocytes/cytology ; Male ; Membrane Proteins/metabolism ; Mice ; Mice, Inbred C57BL ; Nestin/metabolism ; Pericytes/physiology ; Permeability ; Plasma/metabolism ; Reactive Oxygen Species/metabolism ; Receptors, CXCR4/metabolism
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  • 4
    Publication Date: 2016-01-07
    Description: Catalysis in biology is restricted to RNA (ribozymes) and protein enzymes, but synthetic biomolecular catalysts can also be made of DNA (deoxyribozymes) or synthetic genetic polymers. In vitro selection from synthetic random DNA libraries identified DNA catalysts for various chemical reactions beyond RNA backbone cleavage. DNA-catalysed reactions include RNA and DNA ligation in various topologies, hydrolytic cleavage and photorepair of DNA, as well as reactions of peptides and small molecules. In spite of comprehensive biochemical studies of DNA catalysts for two decades, fundamental mechanistic understanding of their function is lacking in the absence of three-dimensional models at atomic resolution. Early attempts to solve the crystal structure of an RNA-cleaving deoxyribozyme resulted in a catalytically irrelevant nucleic acid fold. Here we report the crystal structure of the RNA-ligating deoxyribozyme 9DB1 (ref. 14) at 2.8 A resolution. The structure captures the ligation reaction in the post-catalytic state, revealing a compact folding unit stabilized by numerous tertiary interactions, and an unanticipated organization of the catalytic centre. Structure-guided mutagenesis provided insights into the basis for regioselectivity of the ligation reaction and allowed remarkable manipulation of substrate recognition and reaction rate. Moreover, the structure highlights how the specific properties of deoxyribose are reflected in the backbone conformation of the DNA catalyst, in support of its intricate three-dimensional organization. The structural principles underlying the catalytic ability of DNA elucidate differences and similarities in DNA versus RNA catalysts, which is relevant for comprehending the privileged position of folded RNA in the prebiotic world and in current organisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ponce-Salvatierra, Almudena -- Wawrzyniak-Turek, Katarzyna -- Steuerwald, Ulrich -- Hobartner, Claudia -- Pena, Vladimir -- England -- Nature. 2016 Jan 14;529(7585):231-4. doi: 10.1038/nature16471. Epub 2016 Jan 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Research Group Nucleic Acid Chemistry, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Gottingen, Germany. ; Research Group Macromolecular Crystallography, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Gottingen, Germany. ; Institute for Organic and Biomolecular Chemistry, Georg-August-University Gottingen, Tammannstr. 2, 37077 Gottingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26735012" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Biocatalysis ; Catalytic Domain ; Crystallography, X-Ray ; DNA, Catalytic/chemical synthesis/*chemistry/metabolism ; Deoxyribose/chemistry/metabolism ; Kinetics ; Models, Molecular ; Molecular Sequence Data ; *Nucleic Acid Conformation ; Nucleotides/chemistry/metabolism ; Polynucleotide Ligases/chemistry/metabolism ; RNA/chemistry/metabolism ; RNA Folding ; Substrate Specificity
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  • 5
    Publication Date: 2016-03-17
    Description: The energetic burden of continuously concentrating solutes against gradients along the tubule may render the kidney especially vulnerable to ischaemia. Acute kidney injury (AKI) affects 3% of all hospitalized patients. Here we show that the mitochondrial biogenesis regulator, PGC1alpha, is a pivotal determinant of renal recovery from injury by regulating nicotinamide adenine dinucleotide (NAD) biosynthesis. Following renal ischaemia, Pgc1alpha(-/-) (also known as Ppargc1a(-/-)) mice develop local deficiency of the NAD precursor niacinamide (NAM, also known as nicotinamide), marked fat accumulation, and failure to re-establish normal function. Notably, exogenous NAM improves local NAD levels, fat accumulation, and renal function in post-ischaemic Pgc1alpha(-/-) mice. Inducible tubular transgenic mice (iNephPGC1alpha) recapitulate the effects of NAM supplementation, including more local NAD and less fat accumulation with better renal function after ischaemia. PGC1alpha coordinately upregulates the enzymes that synthesize NAD de novo from amino acids whereas PGC1alpha deficiency or AKI attenuates the de novo pathway. NAM enhances NAD via the enzyme NAMPT and augments production of the fat breakdown product beta-hydroxybutyrate, leading to increased production of prostaglandin PGE2 (ref. 5), a secreted autacoid that maintains renal function. NAM treatment reverses established ischaemic AKI and also prevented AKI in an unrelated toxic model. Inhibition of beta-hydroxybutyrate signalling or prostaglandin production similarly abolishes PGC1alpha-dependent renoprotection. Given the importance of mitochondrial health in ageing and the function of metabolically active organs, the results implicate NAM and NAD as key effectors for achieving PGC1alpha-dependent stress resistance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tran, Mei T -- Zsengeller, Zsuzsanna K -- Berg, Anders H -- Khankin, Eliyahu V -- Bhasin, Manoj K -- Kim, Wondong -- Clish, Clary B -- Stillman, Isaac E -- Karumanchi, S Ananth -- Rhee, Eugene P -- Parikh, Samir M -- K08-DK090142/DK/NIDDK NIH HHS/ -- K08-DK101560/DK/NIDDK NIH HHS/ -- P30-DK079337/DK/NIDDK NIH HHS/ -- R01 DK095072/DK/NIDDK NIH HHS/ -- R01-DK095072/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Mar 24;531(7595):528-32. doi: 10.1038/nature17184. Epub 2016 Mar 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Nephrology and Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Center for Vascular Biology Research, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Division of Clinical Chemistry, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Bioinformatics and Systems Biology Core, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Nephrology and Endocrine Divisions, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA. ; Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02139, USA. ; Howard Hughes Medical Institute, Chevy Chase, Maryland 20815, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26982719" target="_blank"〉PubMed〈/a〉
    Keywords: 3-Hydroxybutyric Acid/metabolism ; Acute Kidney Injury/drug therapy/*metabolism ; Adipose Tissue/drug effects/metabolism ; Amino Acids/metabolism ; Animals ; Cytokines/metabolism ; Dinoprostone/biosynthesis/metabolism ; Humans ; Ischemia/drug therapy/metabolism ; Kidney/drug effects/*metabolism/physiology/physiopathology ; Male ; Mice ; Mice, Inbred C57BL ; Mitochondria/metabolism ; NAD/*biosynthesis ; Niacinamide/deficiency/pharmacology/therapeutic use ; Nicotinamide Phosphoribosyltransferase/metabolism ; Oxidation-Reduction ; Signal Transduction/drug effects ; Stress, Physiological ; Transcription Factors/deficiency/*metabolism
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  • 6
    Publication Date: 2016-02-09
    Description: The tremendous pandemic potential of coronaviruses was demonstrated twice in the past few decades by two global outbreaks of deadly pneumonia. Entry of coronaviruses into cells is mediated by the transmembrane spike glycoprotein S, which forms a trimer carrying receptor-binding and membrane fusion functions. S also contains the principal antigenic determinants and is the target of neutralizing antibodies. Here we present the structure of a mouse coronavirus S trimer ectodomain determined at 4.0 A resolution by single particle cryo-electron microscopy. It reveals the metastable pre-fusion architecture of S and highlights key interactions stabilizing it. The structure shares a common core with paramyxovirus F proteins, implicating mechanistic similarities and an evolutionary connection between these viral fusion proteins. The accessibility of the highly conserved fusion peptide at the periphery of the trimer indicates potential vaccinology strategies to elicit broadly neutralizing antibodies against coronaviruses. Finally, comparison with crystal structures of human coronavirus S domains allows rationalization of the molecular basis for species specificity based on the use of spatially contiguous but distinct domains.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walls, Alexandra C -- Tortorici, M Alejandra -- Bosch, Berend-Jan -- Frenz, Brandon -- Rottier, Peter J M -- DiMaio, Frank -- Rey, Felix A -- Veesler, David -- GM103310/GM/NIGMS NIH HHS/ -- T32GM008268/GM/NIGMS NIH HHS/ -- England -- Nature. 2016 Mar 3;531(7592):114-7. doi: 10.1038/nature16988. Epub 2016 Feb 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA. ; Institut Pasteur, Unite de Virologie Structurale, 75015 Paris, France. ; CNRS UMR 3569 Virologie, 75015 Paris, France. ; Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, The Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26855426" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Neutralizing/immunology ; Cell Line ; Coronavirus Infections/immunology/virology ; *Cryoelectron Microscopy ; Drosophila melanogaster ; Mice ; Models, Molecular ; Molecular Sequence Data ; Murine hepatitis virus/*chemistry/immunology/*ultrastructure ; Protein Multimerization ; Protein Structure, Tertiary ; Spike Glycoprotein, Coronavirus/*chemistry/immunology/*ultrastructure ; Viral Vaccines/chemistry/immunology ; Virus Internalization
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  • 7
    Publication Date: 2016-03-05
    Description: The most recent Ebola virus outbreak in West Africa, which was unprecedented in the number of cases and fatalities, geographic distribution, and number of nations affected, highlights the need for safe, effective, and readily available antiviral agents for treatment and prevention of acute Ebola virus (EBOV) disease (EVD) or sequelae. No antiviral therapeutics have yet received regulatory approval or demonstrated clinical efficacy. Here we report the discovery of a novel small molecule GS-5734, a monophosphoramidate prodrug of an adenosine analogue, with antiviral activity against EBOV. GS-5734 exhibits antiviral activity against multiple variants of EBOV and other filoviruses in cell-based assays. The pharmacologically active nucleoside triphosphate (NTP) is efficiently formed in multiple human cell types incubated with GS-5734 in vitro, and the NTP acts as an alternative substrate and RNA-chain terminator in primer-extension assays using a surrogate respiratory syncytial virus RNA polymerase. Intravenous administration of GS-5734 to nonhuman primates resulted in persistent NTP levels in peripheral blood mononuclear cells (half-life, 14 h) and distribution to sanctuary sites for viral replication including testes, eyes, and brain. In a rhesus monkey model of EVD, once-daily intravenous administration of 10 mg kg(-1) GS-5734 for 12 days resulted in profound suppression of EBOV replication and protected 100% of EBOV-infected animals against lethal disease, ameliorating clinical disease signs and pathophysiological markers, even when treatments were initiated three days after virus exposure when systemic viral RNA was detected in two out of six treated animals. These results show the first substantive post-exposure protection by a small-molecule antiviral compound against EBOV in nonhuman primates. The broad-spectrum antiviral activity of GS-5734 in vitro against other pathogenic RNA viruses, including filoviruses, arenaviruses, and coronaviruses, suggests the potential for wider medical use. GS-5734 is amenable to large-scale manufacturing, and clinical studies investigating the drug safety and pharmacokinetics are ongoing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Warren, Travis K -- Jordan, Robert -- Lo, Michael K -- Ray, Adrian S -- Mackman, Richard L -- Soloveva, Veronica -- Siegel, Dustin -- Perron, Michel -- Bannister, Roy -- Hui, Hon C -- Larson, Nate -- Strickley, Robert -- Wells, Jay -- Stuthman, Kelly S -- Van Tongeren, Sean A -- Garza, Nicole L -- Donnelly, Ginger -- Shurtleff, Amy C -- Retterer, Cary J -- Gharaibeh, Dima -- Zamani, Rouzbeh -- Kenny, Tara -- Eaton, Brett P -- Grimes, Elizabeth -- Welch, Lisa S -- Gomba, Laura -- Wilhelmsen, Catherine L -- Nichols, Donald K -- Nuss, Jonathan E -- Nagle, Elyse R -- Kugelman, Jeffrey R -- Palacios, Gustavo -- Doerffler, Edward -- Neville, Sean -- Carra, Ernest -- Clarke, Michael O -- Zhang, Lijun -- Lew, Willard -- Ross, Bruce -- Wang, Queenie -- Chun, Kwon -- Wolfe, Lydia -- Babusis, Darius -- Park, Yeojin -- Stray, Kirsten M -- Trancheva, Iva -- Feng, Joy Y -- Barauskas, Ona -- Xu, Yili -- Wong, Pamela -- Braun, Molly R -- Flint, Mike -- McMullan, Laura K -- Chen, Shan-Shan -- Fearns, Rachel -- Swaminathan, Swami -- Mayers, Douglas L -- Spiropoulou, Christina F -- Lee, William A -- Nichol, Stuart T -- Cihlar, Tomas -- Bavari, Sina -- R01 AI113321/AI/NIAID NIH HHS/ -- R01AI113321/AI/NIAID NIH HHS/ -- England -- Nature. 2016 Mar 17;531(7594):381-5. doi: 10.1038/nature17180. Epub 2016 Mar 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉United States Army Medical Research Institute of Infectious Diseases, Frederick, Maryland 21702, USA. ; United States Army Medical Research Institute of Infectious Diseases, Therapeutic Development Center, Frederick, Maryland 21702, USA. ; Gilead Sciences, Foster City, California 94404, USA. ; Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA. ; Boston University School of Medicine, Boston, Massachusetts 02118, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26934220" target="_blank"〉PubMed〈/a〉
    Keywords: Alanine/*analogs & derivatives/pharmacokinetics/pharmacology/therapeutic use ; Amino Acid Sequence ; Animals ; Antiviral Agents/pharmacokinetics/pharmacology/*therapeutic use ; Cell Line, Tumor ; Ebolavirus/drug effects ; Female ; HeLa Cells ; Hemorrhagic Fever, Ebola/*drug therapy/prevention & control ; Humans ; Macaca mulatta/*virology ; Male ; Molecular Sequence Data ; Organ Specificity ; Prodrugs/pharmacokinetics/pharmacology/therapeutic use ; Ribonucleotides/pharmacokinetics/pharmacology/*therapeutic use
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  • 8
    Publication Date: 2016-03-29
    Description: Circuits in the cerebral cortex consist of thousands of neurons connected by millions of synapses. A precise understanding of these local networks requires relating circuit activity with the underlying network structure. For pyramidal cells in superficial mouse visual cortex (V1), a consensus is emerging that neurons with similar visual response properties excite each other, but the anatomical basis of this recurrent synaptic network is unknown. Here we combined physiological imaging and large-scale electron microscopy to study an excitatory network in V1. We found that layer 2/3 neurons organized into subnetworks defined by anatomical connectivity, with more connections within than between groups. More specifically, we found that pyramidal neurons with similar orientation selectivity preferentially formed synapses with each other, despite the fact that axons and dendrites of all orientation selectivities pass near (〈5 mum) each other with roughly equal probability. Therefore, we predict that mechanisms of functionally specific connectivity take place at the length scale of spines. Neurons with similar orientation tuning formed larger synapses, potentially enhancing the net effect of synaptic specificity. With the ability to study thousands of connections in a single circuit, functional connectomics is proving a powerful method to uncover the organizational logic of cortical networks.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4844839/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4844839/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Wei-Chung Allen -- Bonin, Vincent -- Reed, Michael -- Graham, Brett J -- Hood, Greg -- Glattfelder, Katie -- Reid, R Clay -- P30 EY012196/EY/NEI NIH HHS/ -- P30 EY12196/EY/NEI NIH HHS/ -- P41 GM103712/GM/NIGMS NIH HHS/ -- P41 RR006009/RR/NCRR NIH HHS/ -- P41 RR06009/RR/NCRR NIH HHS/ -- R01 EY010115/EY/NEI NIH HHS/ -- R01 EY10115/EY/NEI NIH HHS/ -- R01 NS075436/NS/NINDS NIH HHS/ -- R21 NS085320/NS/NINDS NIH HHS/ -- England -- Nature. 2016 Apr 21;532(7599):370-4. doi: 10.1038/nature17192. Epub 2016 Mar 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Neuro-Electronics Research Flanders, a research initiative by imec, Vlaams Instituut voor Biotechnologie (VIB) and Katholieke Universiteit (KU) Leuven, 3001 Leuven, Belgium. ; Biomedical Applications Group, Pittsburgh Supercomputing Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA. ; Allen Institute for Brain Science, Seattle, Washington 98103, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27018655" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/physiology ; Calcium/analysis ; Dendrites/physiology ; Male ; Mice ; Mice, Inbred C57BL ; Photons ; Pyramidal Cells/cytology/physiology ; Synapses/metabolism ; Visual Cortex/*anatomy & histology/cytology/*physiology/ultrastructure ; Visual Pathways/anatomy & histology/*cytology/*physiology/ultrastructure
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  • 9
    Publication Date: 2016-04-07
    Description: Neoplastic pancreatic epithelial cells are believed to die through caspase 8-dependent apoptotic cell death, and chemotherapy is thought to promote tumour apoptosis. Conversely, cancer cells often disrupt apoptosis to survive. Another type of programmed cell death is necroptosis (programmed necrosis), but its role in pancreatic ductal adenocarcinoma (PDA) is unclear. There are many potential inducers of necroptosis in PDA, including ligation of tumour necrosis factor receptor 1 (TNFR1), CD95, TNF-related apoptosis-inducing ligand (TRAIL) receptors, Toll-like receptors, reactive oxygen species, and chemotherapeutic drugs. Here we report that the principal components of the necrosome, receptor-interacting protein (RIP)1 and RIP3, are highly expressed in PDA and are further upregulated by the chemotherapy drug gemcitabine. Blockade of the necrosome in vitro promoted cancer cell proliferation and induced an aggressive oncogenic phenotype. By contrast, in vivo deletion of RIP3 or inhibition of RIP1 protected against oncogenic progression in mice and was associated with the development of a highly immunogenic myeloid and T cell infiltrate. The immune-suppressive tumour microenvironment associated with intact RIP1/RIP3 signalling depended in part on necroptosis-induced expression of the chemokine attractant CXCL1, and CXCL1 blockade protected against PDA. Moreover, cytoplasmic SAP130 (a subunit of the histone deacetylase complex) was expressed in PDA in a RIP1/RIP3-dependent manner, and Mincle--its cognate receptor--was upregulated in tumour-infiltrating myeloid cells. Ligation of Mincle by SAP130 promoted oncogenesis, whereas deletion of Mincle protected against oncogenesis and phenocopied the immunogenic reprogramming of the tumour microenvironment that was induced by RIP3 deletion. Cellular depletion suggested that whereas inhibitory macrophages promote tumorigenesis in PDA, they lose their immune-suppressive effects when RIP3 or Mincle is deleted. Accordingly, T cells, which are not protective against PDA progression in mice with intact RIP3 or Mincle signalling, are reprogrammed into indispensable mediators of anti-tumour immunity in the absence of RIP3 or Mincle. Our work describes parallel networks of necroptosis-induced CXCL1 and Mincle signalling that promote macrophage-induced adaptive immune suppression and thereby enable PDA progression.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4833566/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4833566/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seifert, Lena -- Werba, Gregor -- Tiwari, Shaun -- Giao Ly, Nancy Ngoc -- Alothman, Sara -- Alqunaibit, Dalia -- Avanzi, Antonina -- Barilla, Rocky -- Daley, Donnele -- Greco, Stephanie H -- Torres-Hernandez, Alejandro -- Pergamo, Matthew -- Ochi, Atsuo -- Zambirinis, Constantinos P -- Pansari, Mridul -- Rendon, Mauricio -- Tippens, Daniel -- Hundeyin, Mautin -- Mani, Vishnu R -- Hajdu, Cristina -- Engle, Dannielle -- Miller, George -- CA155649/CA/NCI NIH HHS/ -- CA168611/CA/NCI NIH HHS/ -- CA193111/CA/NCI NIH HHS/ -- P30CA016087/CA/NCI NIH HHS/ -- R01 CA168611/CA/NCI NIH HHS/ -- T32 CA193111/CA/NCI NIH HHS/ -- UL1 TR000038/TR/NCATS NIH HHS/ -- England -- Nature. 2016 Apr 14;532(7598):245-9. doi: 10.1038/nature17403. Epub 2016 Apr 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, New York 10016, USA. ; Department of Cell Biology, New York University School of Medicine, 550 First Avenue, New York, New York 10016, USA. ; Department of Pathology, New York University School of Medicine, 550 First Avenue, New York, New York 10016, USA. ; Cold Spring Harbor Laboratories, Cold Spring Harbor, New York 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27049944" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/immunology/metabolism/pathology ; Animals ; Apoptosis/drug effects ; *Carcinogenesis/drug effects ; Carcinoma, Pancreatic Ductal/immunology/metabolism/pathology ; Cell Line, Tumor ; Cell Proliferation/drug effects ; Chemokine CXCL1/antagonists & inhibitors/*metabolism ; Deoxycytidine/analogs & derivatives/pharmacology ; Disease Progression ; Female ; GTPase-Activating Proteins/metabolism ; Gene Expression Regulation, Neoplastic ; Humans ; *Immune Tolerance ; Lectins, C-Type/immunology/*metabolism ; Male ; Membrane Proteins/immunology/*metabolism ; Mice ; Mice, Inbred C57BL ; *Necrosis ; Pancreatic Neoplasms/*immunology/metabolism/*pathology ; Receptor-Interacting Protein Serine-Threonine Kinases/metabolism ; Signal Transduction ; Up-Regulation
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  • 10
    Publication Date: 2016-02-09
    Description: Sighs are long, deep breaths expressing sadness, relief or exhaustion. Sighs also occur spontaneously every few minutes to reinflate alveoli, and sighing increases under hypoxia, stress, and certain psychiatric conditions. Here we use molecular, genetic, and pharmacologic approaches to identify a peptidergic sigh control circuit in murine brain. Small neural subpopulations in a key breathing control centre, the retrotrapezoid nucleus/parafacial respiratory group (RTN/pFRG), express bombesin-like neuropeptide genes neuromedin B (Nmb) or gastrin-releasing peptide (Grp). These project to the preBotzinger Complex (preBotC), the respiratory rhythm generator, which expresses NMB and GRP receptors in overlapping subsets of ~200 neurons. Introducing either neuropeptide into preBotC or onto preBotC slices, induced sighing or in vitro sigh activity, whereas elimination or inhibition of either receptor reduced basal sighing, and inhibition of both abolished it. Ablating receptor-expressing neurons eliminated basal and hypoxia-induced sighing, but left breathing otherwise intact initially. We propose that these overlapping peptidergic pathways comprise the core of a sigh control circuit that integrates physiological and perhaps emotional input to transform normal breaths into sighs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Peng -- Janczewski, Wiktor A -- Yackle, Kevin -- Kam, Kaiwen -- Pagliardini, Silvia -- Krasnow, Mark A -- Feldman, Jack L -- HL40959/HL/NHLBI NIH HHS/ -- HL70029/HL/NHLBI NIH HHS/ -- NS72211/NS/NINDS NIH HHS/ -- R01 HL040959/HL/NHLBI NIH HHS/ -- R01 HL070029/HL/NHLBI NIH HHS/ -- R01 NS072211/NS/NINDS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Feb 18;530(7590):293-7. doi: 10.1038/nature16964. Epub 2016 Feb 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA. ; Systems Neurobiology Laboratory, Department of Neurobiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26855425" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bombesin/pharmacology ; Emotions/physiology ; Female ; Gastrin-Releasing Peptide/deficiency/genetics/*metabolism ; In Vitro Techniques ; Male ; Mice ; Mice, Inbred C57BL ; Neurokinin B/*analogs & derivatives/deficiency/genetics/metabolism/pharmacology ; Neurons/drug effects/*physiology ; Rats ; Rats, Sprague-Dawley ; Receptors, Bombesin/*metabolism ; *Respiration/drug effects ; Respiratory Center/cytology/drug effects/physiology ; Ribosome Inactivating Proteins, Type 1/pharmacology ; Signal Transduction/drug effects/*physiology
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  • 11
    Publication Date: 2016-01-28
    Description: Lymphoid tissue is a key reservoir established by HIV-1 during acute infection. It is a site associated with viral production, storage of viral particles in immune complexes, and viral persistence. Although combinations of antiretroviral drugs usually suppress viral replication and reduce viral RNA to undetectable levels in blood, it is unclear whether treatment fully suppresses viral replication in lymphoid tissue reservoirs. Here we show that virus evolution and trafficking between tissue compartments continues in patients with undetectable levels of virus in their bloodstream. We present a spatial and dynamic model of persistent viral replication and spread that indicates why the development of drug resistance is not a foregone conclusion under conditions in which drug concentrations are insufficient to completely block virus replication. These data provide new insights into the evolutionary and infection dynamics of the virus population within the host, revealing that HIV-1 can continue to replicate and replenish the viral reservoir despite potent antiretroviral therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lorenzo-Redondo, Ramon -- Fryer, Helen R -- Bedford, Trevor -- Kim, Eun-Young -- Archer, John -- Kosakovsky Pond, Sergei L -- Chung, Yoon-Seok -- Penugonda, Sudhir -- Chipman, Jeffrey G -- Fletcher, Courtney V -- Schacker, Timothy W -- Malim, Michael H -- Rambaut, Andrew -- Haase, Ashley T -- McLean, Angela R -- Wolinsky, Steven M -- AI1074340/AI/NIAID NIH HHS/ -- DA033773/DA/NIDA NIH HHS/ -- G1000196/Medical Research Council/United Kingdom -- GM110749/GM/NIGMS NIH HHS/ -- R01 DA033773/DA/NIDA NIH HHS/ -- Wellcome Trust/United Kingdom -- England -- Nature. 2016 Feb 4;530(7588):51-6. doi: 10.1038/nature16933. Epub 2016 Jan 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60011, USA. ; Institute for Emerging Infections, Department of Zoology, University of Oxford, Oxford, OX1 3PS, UK. ; Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA. ; Centro de Investigacao em Biodiversidade e Recursos Geneticos Universidade do Porto, 4485-661 Vairao, Portugal. ; Department of Medicine, University of California, San Diego, California 92093, USA. ; Division of AIDS, Center for Immunology and Pathology, Korea National Institutes of Health, Chungju-si, Chungcheongbuk-do, 28159, South Korea. ; Department of Surgery, University of Minnesota, Minneapolis, Minnesota 55455, USA. ; Antiviral Pharmacology Laboratory, University of Nebraska Medical Center, College of Pharmacy, Omaha, Nebraska 68198, USA. ; Division of Infectious Diseases, University of Minnesota, Minneapolis, Minnesota 55455, USA. ; Department of Infectious Diseases, King's College London, Guy's Hospital, London SE21 7DN, UK. ; Centre for Immunology, Infection and Evolution, University of Edinburgh, Edinburgh EH9 3FL, UK. ; Department of Microbiology, University of Minnesota, Minneapolis, Minnesota 55455, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26814962" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-HIV Agents/administration & dosage/pharmacology/therapeutic use ; Carrier State/blood/*drug therapy/*virology ; Drug Resistance, Viral/drug effects ; HIV Infections/blood/*drug therapy/*virology ; HIV-1/drug effects/genetics/*growth & development/isolation & purification ; Haplotypes/drug effects ; Humans ; Lymph Nodes/drug effects/virology ; Models, Biological ; Molecular Sequence Data ; Phylogeny ; Selection, Genetic/drug effects ; Sequence Analysis, DNA ; Spatio-Temporal Analysis ; Time Factors ; *Viral Load/drug effects ; *Virus Replication/drug effects
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  • 12
    Publication Date: 2016-04-28
    Description: The Bacillus thuringiensis delta-endotoxins (Bt toxins) are widely used insecticidal proteins in engineered crops that provide agricultural, economic, and environmental benefits. The development of insect resistance to Bt toxins endangers their long-term effectiveness. Here we have developed a phage-assisted continuous evolution selection that rapidly evolves high-affinity protein-protein interactions, and applied this system to evolve variants of the Bt toxin Cry1Ac that bind a cadherin-like receptor from the insect pest Trichoplusia ni (TnCAD) that is not natively bound by wild-type Cry1Ac. The resulting evolved Cry1Ac variants bind TnCAD with high affinity (dissociation constant Kd = 11-41 nM), kill TnCAD-expressing insect cells that are not susceptible to wild-type Cry1Ac, and kill Cry1Ac-resistant T. ni insects up to 335-fold more potently than wild-type Cry1Ac. Our findings establish that the evolution of Bt toxins with novel insect cell receptor affinity can overcome insect Bt toxin resistance and confer lethality approaching that of the wild-type Bt toxin against non-resistant insects.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4865400/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4865400/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Badran, Ahmed H -- Guzov, Victor M -- Huai, Qing -- Kemp, Melissa M -- Vishwanath, Prashanth -- Kain, Wendy -- Nance, Autumn M -- Evdokimov, Artem -- Moshiri, Farhad -- Turner, Keith H -- Wang, Ping -- Malvar, Thomas -- Liu, David R -- R01 EB022376/EB/NIBIB NIH HHS/ -- R01EB022376/EB/NIBIB NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 May 5;533(7601):58-63. doi: 10.1038/nature17938. Epub 2016 Apr 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; Howard Hughes Medical Institute, Harvard University, Cambridge, Massachusetts 02138, USA. ; Monsanto Company, 245 First Street, Suite 200, Cambridge, Massachusetts 02142, USA. ; Department of Entomology, Cornell University, Geneva, New York 14456, USA. ; Monsanto Company, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27120167" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bacillus thuringiensis/*genetics ; Bacterial Proteins/*genetics/*metabolism ; Bacteriophages/genetics ; Biotechnology ; Cadherins/metabolism ; Cell Death ; Consensus Sequence ; Crops, Agricultural/genetics/metabolism ; Directed Molecular Evolution/*methods ; Endotoxins/*genetics/*metabolism ; Genetic Variation/*genetics ; Hemolysin Proteins/*genetics/*metabolism ; *Insecticide Resistance ; Insecticides/metabolism ; Molecular Sequence Data ; Moths/cytology/*physiology ; Mutagenesis/genetics ; Pest Control, Biological/*methods ; Plants, Genetically Modified ; Protein Binding/genetics ; Protein Stability ; Selection, Genetic
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  • 13
    Publication Date: 2016-03-10
    Description: Inhibitory neurons regulate the adaptation of neural circuits to sensory experience, but the molecular mechanisms by which experience controls the connectivity between different types of inhibitory neuron to regulate cortical plasticity are largely unknown. Here we show that exposure of dark-housed mice to light induces a gene program in cortical vasoactive intestinal peptide (VIP)-expressing neurons that is markedly distinct from that induced in excitatory neurons and other subtypes of inhibitory neuron. We identify Igf1 as one of several activity-regulated genes that are specific to VIP neurons, and demonstrate that IGF1 functions cell-autonomously in VIP neurons to increase inhibitory synaptic input onto these neurons. Our findings further suggest that in cortical VIP neurons, experience-dependent gene transcription regulates visual acuity by activating the expression of IGF1, thus promoting the inhibition of disinhibitory neurons and affecting inhibition onto cortical pyramidal neurons.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4823817/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4823817/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mardinly, A R -- Spiegel, I -- Patrizi, A -- Centofante, E -- Bazinet, J E -- Tzeng, C P -- Mandel-Brehm, C -- Harmin, D A -- Adesnik, H -- Fagiolini, M -- Greenberg, M E -- P01 NS047572/NS/NINDS NIH HHS/ -- P30 HD018655/HD/NICHD NIH HHS/ -- R01 NS028829/NS/NINDS NIH HHS/ -- R37 NS028829/NS/NINDS NIH HHS/ -- England -- Nature. 2016 Mar 17;531(7594):371-5. doi: 10.1038/nature17187. Epub 2016 Mar 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, University of California Berkeley, 205 Life Sciences Addition, Berkeley, California 94720, USA. ; Department of Neurobiology, Harvard Medical School, 220 Longwood Ave, Boston, Massachusetts 02115, USA. ; FM Kirby Neurobiology Center, Boston Children's Hospital, 3 Blackfan Circle, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26958833" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Insulin-Like Growth Factor I/*metabolism ; Male ; Mice ; Mice, Inbred C57BL ; *Neural Inhibition ; Neural Pathways ; Neuronal Plasticity ; Neurons/cytology/*metabolism/secretion ; Pyramidal Cells/metabolism ; Synapses/metabolism ; Vasoactive Intestinal Peptide/*metabolism ; Vision, Ocular/physiology ; Visual Cortex/*cytology/*physiology
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  • 14
    Publication Date: 2016-01-21
    Description: Cellular immunity against viral infection and tumour cells depends on antigen presentation by major histocompatibility complex class I (MHC I) molecules. Intracellular antigenic peptides are transported into the endoplasmic reticulum by the transporter associated with antigen processing (TAP) and then loaded onto the nascent MHC I molecules, which are exported to the cell surface and present peptides to the immune system. Cytotoxic T lymphocytes recognize non-self peptides and program the infected or malignant cells for apoptosis. Defects in TAP account for immunodeficiency and tumour development. To escape immune surveillance, some viruses have evolved strategies either to downregulate TAP expression or directly inhibit TAP activity. So far, neither the architecture of TAP nor the mechanism of viral inhibition has been elucidated at the structural level. Here we describe the cryo-electron microscopy structure of human TAP in complex with its inhibitor ICP47, a small protein produced by the herpes simplex virus I. Here we show that the 12 transmembrane helices and 2 cytosolic nucleotide-binding domains of the transporter adopt an inward-facing conformation with the two nucleotide-binding domains separated. The viral inhibitor ICP47 forms a long helical hairpin, which plugs the translocation pathway of TAP from the cytoplasmic side. Association of ICP47 precludes substrate binding and prevents nucleotide-binding domain closure necessary for ATP hydrolysis. This work illustrates a striking example of immune evasion by persistent viruses. By blocking viral antigens from entering the endoplasmic reticulum, herpes simplex virus is hidden from cytotoxic T lymphocytes, which may contribute to establishing a lifelong infection in the host.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oldham, Michael L -- Hite, Richard K -- Steffen, Alanna M -- Damko, Ermelinda -- Li, Zongli -- Walz, Thomas -- Chen, Jue -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Jan 28;529(7587):537-40. doi: 10.1038/nature16506. Epub 2016 Jan 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Rockefeller University, 1230 York Avenue, New York, New York 10065, USA. ; Howard Hughes Medical Institute, 4000 Jones Bridge Road, Chevy Chase, Maryland 20815, USA. ; Department of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26789246" target="_blank"〉PubMed〈/a〉
    Keywords: ATP-Binding Cassette Transporters/antagonists & ; inhibitors/chemistry/*metabolism/*ultrastructure ; Amino Acid Sequence ; Antigens, Viral/immunology/metabolism ; *Cryoelectron Microscopy ; Endoplasmic Reticulum/metabolism ; Herpesvirus 1, Human/chemistry/*immunology/metabolism/ultrastructure ; Immediate-Early Proteins/chemistry/*metabolism/*ultrastructure ; *Immune Evasion ; Models, Molecular ; Molecular Sequence Data ; Protein Binding ; Protein Conformation
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  • 15
    Publication Date: 2016-02-13
    Description: Haematopoietic stem cells (HSCs) are arguably the most extensively characterized tissue stem cells. Since the identification of HSCs by prospective isolation, complex multi-parameter flow cytometric isolation of phenotypic subsets has facilitated studies on many aspects of HSC biology, including self-renewal, differentiation, ageing, niche, and diversity. Here we demonstrate by unbiased multi-step screening, identification of a single gene, homeobox B5 (Hoxb5, also known as Hox-2.1), with expression in the bone marrow that is limited to long-term (LT)-HSCs in mice. Using a mouse single-colour tri-mCherry reporter driven by endogenous Hoxb5 regulation, we show that only the Hoxb5(+) HSCs exhibit long-term reconstitution capacity after transplantation in primary transplant recipients and, notably, in secondary recipients. Only 7-35% of various previously defined immunophenotypic HSCs are LT-HSCs. Finally, by in situ imaging of mouse bone marrow, we show that 〉94% of LT-HSCs (Hoxb5(+)) are directly attached to VE-cadherin(+) cells, implicating the perivascular space as a near-homogenous location of LT-HSCs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, James Y -- Miyanishi, Masanori -- Wang, Sean K -- Yamazaki, Satoshi -- Sinha, Rahul -- Kao, Kevin S -- Seita, Jun -- Sahoo, Debashis -- Nakauchi, Hiromitsu -- Weissman, Irving L -- F30-HL122096/HL/NHLBI NIH HHS/ -- R01 CA086065/CA/NCI NIH HHS/ -- R01 HL058770/HL/NHLBI NIH HHS/ -- T32 GM007365/GM/NIGMS NIH HHS/ -- U01 HL099999/HL/NHLBI NIH HHS/ -- England -- Nature. 2016 Feb 11;530(7589):223-7. doi: 10.1038/nature16943.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California 94305, USA. ; Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University School of Medicine, Stanford, California 94305, USA. ; Division of Stem Cell Therapy, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26863982" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/metabolism ; Biomarkers/analysis ; Bone Marrow/metabolism ; Cadherins/metabolism ; Cell Self Renewal ; Gene Expression Regulation ; Genes, Reporter/genetics ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/*cytology/*metabolism ; Homeodomain Proteins/genetics/*metabolism ; Immunophenotyping ; Male ; Mice ; Mice, Inbred C57BL ; *Stem Cell Niche
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  • 16
    Publication Date: 2016-01-21
    Description: The p53 pro-apoptotic tumour suppressor is mutated or functionally altered in most cancers. In epithelial tumours induced by 'high-risk' mucosal human papilloma viruses, including human cervical carcinoma and a growing number of head-and-neck cancers, p53 is degraded by the viral oncoprotein E6 (ref. 2). In this process, E6 binds to a short leucine (L)-rich LxxLL consensus sequence within the cellular ubiquitin ligase E6AP. Subsequently, the E6/E6AP heterodimer recruits and degrades p53 (ref. 4). Neither E6 nor E6AP are separately able to recruit p53 (refs 3, 5), and the precise mode of assembly of E6, E6AP and p53 is unknown. Here we solve the crystal structure of a ternary complex comprising full-length human papilloma virus type 16 (HPV-16) E6, the LxxLL motif of E6AP and the core domain of p53. The LxxLL motif of E6AP renders the conformation of E6 competent for interaction with p53 by structuring a p53-binding cleft on E6. Mutagenesis of critical positions at the E6-p53 interface disrupts p53 degradation. The E6-binding site of p53 is distal from previously described DNA- and protein-binding surfaces of the core domain. This suggests that, in principle, E6 may avoid competition with cellular factors by targeting both free and bound p53 molecules. The E6/E6AP/p53 complex represents a prototype of viral hijacking of both the ubiquitin-mediated protein degradation pathway and the p53 tumour suppressor pathway. The present structure provides a framework for the design of inhibitory therapeutic strategies against oncogenesis mediated by human papilloma virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez-Zapien, Denise -- Ruiz, Francesc Xavier -- Poirson, Juline -- Mitschler, Andre -- Ramirez, Juan -- Forster, Anne -- Cousido-Siah, Alexandra -- Masson, Murielle -- Vande Pol, Scott -- Podjarny, Alberto -- Trave, Gilles -- Zanier, Katia -- R01CA134737/CA/NCI NIH HHS/ -- England -- Nature. 2016 Jan 28;529(7587):541-5. doi: 10.1038/nature16481. Epub 2016 Jan 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Equipe labellisee Ligue, Biotechnologie et signalisation cellulaire UMR 7242, Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sebastien Brant, BP 10413, F-67412 Illkirch, France. ; Institut de Genetique et de Biologie Moleculaire et Cellulaire (IGBMC)/INSERM U964/CNRS UMR 7104/Universite de Strasbourg, 1 rue Laurent Fries, BP 10142, F-67404 Illkirch, France. ; Department of Pathology, University of Virginia, PO Box 800904, Charlottesville, Virginia 22908-0904, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26789255" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Binding Sites ; Crystallography, X-Ray ; Human papillomavirus 16/chemistry/*metabolism/pathogenicity ; Humans ; Models, Biological ; Models, Molecular ; Molecular Sequence Data ; Mutant Proteins/chemistry/metabolism ; Oncogene Proteins, Viral/*chemistry/genetics/*metabolism ; Protein Binding ; Protein Structure, Tertiary ; *Proteolysis ; Repressor Proteins/*chemistry/genetics/*metabolism ; Tumor Suppressor Protein p53/*chemistry/genetics/*metabolism ; Ubiquitin-Protein Ligases/*chemistry
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  • 17
    Publication Date: 2016-03-24
    Description: Endoplasmic reticulum (ER) stress is a major contributor to inflammatory diseases, such as Crohn disease and type 2 diabetes. ER stress induces the unfolded protein response, which involves activation of three transmembrane receptors, ATF6, PERK and IRE1alpha. Once activated, IRE1alpha recruits TRAF2 to the ER membrane to initiate inflammatory responses via the NF-kappaB pathway. Inflammation is commonly triggered when pattern recognition receptors (PRRs), such as Toll-like receptors or nucleotide-binding oligomerization domain (NOD)-like receptors, detect tissue damage or microbial infection. However, it is not clear which PRRs have a major role in inducing inflammation during ER stress. Here we show that NOD1 and NOD2, two members of the NOD-like receptor family of PRRs, are important mediators of ER-stress-induced inflammation in mouse and human cells. The ER stress inducers thapsigargin and dithiothreitol trigger production of the pro-inflammatory cytokine IL-6 in a NOD1/2-dependent fashion. Inflammation and IL-6 production triggered by infection with Brucella abortus, which induces ER stress by injecting the type IV secretion system effector protein VceC into host cells, is TRAF2, NOD1/2 and RIP2-dependent and can be reduced by treatment with the ER stress inhibitor tauroursodeoxycholate or an IRE1alpha kinase inhibitor. The association of NOD1 and NOD2 with pro-inflammatory responses induced by the IRE1alpha/TRAF2 signalling pathway provides a novel link between innate immunity and ER-stress-induced inflammation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4869892/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4869892/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keestra-Gounder, A Marijke -- Byndloss, Mariana X -- Seyffert, Nubia -- Young, Briana M -- Chavez-Arroyo, Alfredo -- Tsai, April Y -- Cevallos, Stephanie A -- Winter, Maria G -- Pham, Oanh H -- Tiffany, Connor R -- de Jong, Maarten F -- Kerrinnes, Tobias -- Ravindran, Resmi -- Luciw, Paul A -- McSorley, Stephen J -- Baumler, Andreas J -- Tsolis, Renee M -- AI044170/AI/NIAID NIH HHS/ -- AI076246/AI/NIAID NIH HHS/ -- AI076278/AI/NIAID NIH HHS/ -- AI096528/AI/NIAID NIH HHS/ -- AI109799/AI/NIAID NIH HHS/ -- AI112258/AI/NIAID NIH HHS/ -- AI117303/AI/NIAID NIH HHS/ -- GM056765/GM/NIGMS NIH HHS/ -- R01 AI044170/AI/NIAID NIH HHS/ -- R01 AI076246/AI/NIAID NIH HHS/ -- R01 AI076278/AI/NIAID NIH HHS/ -- R01 AI096528/AI/NIAID NIH HHS/ -- R01 AI109799/AI/NIAID NIH HHS/ -- R21 AI112258/AI/NIAID NIH HHS/ -- R21 AI117303/AI/NIAID NIH HHS/ -- R25 GM056765/GM/NIGMS NIH HHS/ -- England -- Nature. 2016 Apr 21;532(7599):394-7. doi: 10.1038/nature17631. Epub 2016 Mar 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Microbiology and Immunology, School of Medicine, University of California at Davis, One Shields Ave, Davis, California 95616, USA. ; Center for Comparative Medicine, Schools of Medicine and Veterinary Medicine, University of California at Davis, One Shields Ave, Davis, California 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27007849" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Outer Membrane Proteins/metabolism ; Brucella abortus/immunology/pathogenicity ; Cell Line ; Dithiothreitol/pharmacology ; Endoplasmic Reticulum/drug effects/pathology ; *Endoplasmic Reticulum Stress/drug effects ; Endoribonucleases/antagonists & inhibitors ; Female ; Humans ; Immunity, Innate ; Inflammation/chemically induced/*metabolism ; Interleukin-6/biosynthesis ; Male ; Mice ; Mice, Inbred C57BL ; NF-kappa B/metabolism ; Nod1 Signaling Adaptor Protein/immunology/*metabolism ; Nod2 Signaling Adaptor Protein/immunology/*metabolism ; Protein-Serine-Threonine Kinases/antagonists & inhibitors ; Receptors, Pattern Recognition/metabolism ; *Signal Transduction/drug effects ; TNF Receptor-Associated Factor 2/metabolism ; Taurochenodeoxycholic Acid/pharmacology ; Thapsigargin/pharmacology ; Unfolded Protein Response/drug effects
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  • 18
    Publication Date: 2016-03-31
    Description: Brown and beige adipose tissues can dissipate chemical energy as heat through thermogenic respiration, which requires uncoupling protein 1 (UCP1). Thermogenesis from these adipocytes can combat obesity and diabetes, encouraging investigation of factors that control UCP1-dependent respiration in vivo. Here we show that acutely activated thermogenesis in brown adipose tissue is defined by a substantial increase in levels of mitochondrial reactive oxygen species (ROS). Remarkably, this process supports in vivo thermogenesis, as pharmacological depletion of mitochondrial ROS results in hypothermia upon cold exposure, and inhibits UCP1-dependent increases in whole-body energy expenditure. We further establish that thermogenic ROS alter the redox status of cysteine thiols in brown adipose tissue to drive increased respiration, and that Cys253 of UCP1 is a key target. UCP1 Cys253 is sulfenylated during thermogenesis, while mutation of this site desensitizes the purine-nucleotide-inhibited state of the carrier to adrenergic activation and uncoupling. These studies identify mitochondrial ROS induction in brown adipose tissue as a mechanism that supports UCP1-dependent thermogenesis and whole-body energy expenditure, which opens the way to improved therapeutic strategies for combating metabolic disorders.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chouchani, Edward T -- Kazak, Lawrence -- Jedrychowski, Mark P -- Lu, Gina Z -- Erickson, Brian K -- Szpyt, John -- Pierce, Kerry A -- Laznik-Bogoslavski, Dina -- Vetrivelan, Ramalingam -- Clish, Clary B -- Robinson, Alan J -- Gygi, Steve P -- Spiegelman, Bruce M -- DK31405/DK/NIDDK NIH HHS/ -- Canadian Institutes of Health Research/Canada -- England -- Nature. 2016 Apr 7;532(7597):112-6. doi: 10.1038/nature17399. Epub 2016 Mar 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA. ; Department of Neurology, Harvard Medical School, Boston, Massachusetts 02215, USA. ; MRC Mitochondrial Biology Unit, Hills Road, Cambridge CB2 0XY, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27027295" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue, Brown/chemistry/cytology/metabolism ; Animals ; Cell Respiration ; Cysteine/*chemistry/genetics/metabolism ; *Energy Metabolism/drug effects ; Female ; Humans ; Ion Channels/*chemistry/deficiency/genetics/*metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mitochondria/drug effects/*metabolism ; Mitochondrial Proteins/*chemistry/deficiency/genetics/*metabolism ; Mutant Proteins/chemistry/genetics/metabolism ; Oxidation-Reduction ; Reactive Oxygen Species/*metabolism ; Sulfhydryl Compounds/metabolism ; *Thermogenesis/drug effects
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  • 19
    Publication Date: 2016-04-07
    Description: Signalling by ubiquitination regulates virtually every cellular process in eukaryotes. Covalent attachment of ubiquitin to a substrate is catalysed by the E1, E2 and E3 three-enzyme cascade, which links the carboxy terminus of ubiquitin to the epsilon-amino group of, in most cases, a lysine of the substrate via an isopeptide bond. Given the essential roles of ubiquitination in the regulation of the immune system, it is not surprising that the ubiquitination network is a common target for diverse infectious agents. For example, many bacterial pathogens exploit ubiquitin signalling using virulence factors that function as E3 ligases, deubiquitinases or as enzymes that directly attack ubiquitin. The bacterial pathogen Legionella pneumophila utilizes approximately 300 effectors that modulate diverse host processes to create a permissive niche for its replication in phagocytes. Here we demonstrate that members of the SidE effector family of L. pneumophila ubiquitinate multiple Rab small GTPases associated with the endoplasmic reticulum. Moreover, we show that these proteins are capable of catalysing ubiquitination without the need for the E1 and E2 enzymes. A putative mono-ADP-ribosyltransferase motif critical for the ubiquitination activity is also essential for the role of the SidE family in intracellular bacterial replication in a protozoan host. The E1/E2-independent ubiquitination catalysed by these enzymes is energized by nicotinamide adenine dinucleotide, which activates ubiquitin by the formation of ADP-ribosylated ubiquitin. These results establish that ubiquitination can be catalysed by a single enzyme, the activity of which does not require ATP.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Qiu, Jiazhang -- Sheedlo, Michael J -- Yu, Kaiwen -- Tan, Yunhao -- Nakayasu, Ernesto S -- Das, Chittaranjan -- Liu, Xiaoyun -- Luo, Zhao-Qing -- 2R01GM103401/GM/NIGMS NIH HHS/ -- K02AI085403/AI/NIAID NIH HHS/ -- R21AI105714/AI/NIAID NIH HHS/ -- R56AI103168/AI/NIAID NIH HHS/ -- England -- Nature. 2016 May 5;533(7601):120-4. doi: 10.1038/nature17657. Epub 2016 Apr 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Purdue Institute for Inflammation, Immunology and Infectious Disease and Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA. ; Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, USA. ; Institute of Analytical Chemistry and Synthetic and Functional Biomolecules Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China. ; Biological Science Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27049943" target="_blank"〉PubMed〈/a〉
    Keywords: ADP Ribose Transferases/chemistry/metabolism ; Adenosine Diphosphate Ribose/metabolism ; Adenosine Triphosphate ; Amino Acid Motifs ; Amino Acid Sequence ; Bacterial Load ; Bacterial Proteins/*metabolism ; Biocatalysis ; Endoplasmic Reticulum/enzymology/metabolism ; Legionella pneumophila/*chemistry/cytology/enzymology/pathogenicity ; Membrane Proteins/metabolism ; Molecular Sequence Data ; NAD/metabolism ; Ubiquitin/chemistry/metabolism ; Ubiquitin-Activating Enzymes ; Ubiquitin-Conjugating Enzymes ; *Ubiquitination ; Virulence Factors/metabolism ; rab GTP-Binding Proteins/chemistry/metabolism
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  • 20
    Publication Date: 2016-02-04
    Description: Chronic opiate use induces opiate dependence, which is characterized by extremely unpleasant physical and emotional feelings after drug use is terminated. Both the rewarding effects of a drug and the desire to avoid withdrawal symptoms motivate continued drug use, and the nucleus accumbens is important for orchestrating both processes. While multiple inputs to the nucleus accumbens regulate reward, little is known about the nucleus accumbens circuitry underlying withdrawal. Here we identify the paraventricular nucleus of the thalamus as a prominent input to the nucleus accumbens mediating the expression of opiate-withdrawal-induced physical signs and aversive memory. Activity in the paraventricular nucleus of the thalamus to nucleus accumbens pathway is necessary and sufficient to mediate behavioural aversion. Selectively silencing this pathway abolishes aversive symptoms in two different mouse models of opiate withdrawal. Chronic morphine exposure selectively potentiates excitatory transmission between the paraventricular nucleus of the thalamus and D2-receptor-expressing medium spiny neurons via synaptic insertion of GluA2-lacking AMPA receptors. Notably, in vivo optogenetic depotentiation restores normal transmission at these synapses and robustly suppresses morphine withdrawal symptoms. This links morphine-evoked pathway- and cell-type-specific plasticity in the paraventricular nucleus of the thalamus to nucleus accumbens circuit to opiate dependence, and suggests that reprogramming this circuit holds promise for treating opiate addiction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhu, Yingjie -- Wienecke, Carl F R -- Nachtrab, Gregory -- Chen, Xiaoke -- 5T32DA035165-02/DA/NIDA NIH HHS/ -- T32 DA035165/DA/NIDA NIH HHS/ -- England -- Nature. 2016 Feb 11;530(7589):219-22. doi: 10.1038/nature16954. Epub 2016 Feb 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Stanford University, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26840481" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning ; Disease Models, Animal ; Long-Term Synaptic Depression ; Male ; Mice ; Mice, Inbred C57BL ; Morphine/administration & dosage/pharmacology ; *Neural Pathways/drug effects ; Neuronal Plasticity ; Neurons/drug effects/metabolism ; Nucleus Accumbens/drug effects/*physiopathology ; Opioid-Related Disorders/*physiopathology/therapy ; Optogenetics ; Rats, Sprague-Dawley ; Receptors, AMPA/metabolism ; Receptors, Dopamine D2/metabolism ; Reward ; Substance Withdrawal Syndrome/*physiopathology/therapy ; Synaptic Transmission/drug effects ; Thalamus/drug effects/pathology/*physiopathology
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  • 21
    Publication Date: 2016-01-28
    Description: Inflammasomes are intracellular protein complexes that drive the activation of inflammatory caspases. So far, four inflammasomes involving NLRP1, NLRP3, NLRC4 and AIM2 have been described that recruit the common adaptor protein ASC to activate caspase-1, leading to the secretion of mature IL-1beta and IL-18 proteins. The NLRP3 inflammasome has been implicated in the pathogenesis of several acquired inflammatory diseases as well as cryopyrin-associated periodic fever syndromes (CAPS) caused by inherited NLRP3 mutations. Potassium efflux is a common step that is essential for NLRP3 inflammasome activation induced by many stimuli. Despite extensive investigation, the molecular mechanism leading to NLRP3 activation in response to potassium efflux remains unknown. Here we report the identification of NEK7, a member of the family of mammalian NIMA-related kinases (NEK proteins), as an NLRP3-binding protein that acts downstream of potassium efflux to regulate NLRP3 oligomerization and activation. In the absence of NEK7, caspase-1 activation and IL-1beta release were abrogated in response to signals that activate NLRP3, but not NLRC4 or AIM2 inflammasomes. NLRP3-activating stimuli promoted the NLRP3-NEK7 interaction in a process that was dependent on potassium efflux. NLRP3 associated with the catalytic domain of NEK7, but the catalytic activity of NEK7 was shown to be dispensable for activation of the NLRP3 inflammasome. Activated macrophages formed a high-molecular-mass NLRP3-NEK7 complex, which, along with ASC oligomerization and ASC speck formation, was abrogated in the absence of NEK7. NEK7 was required for macrophages containing the CAPS-associated NLRP3(R258W) activating mutation to activate caspase-1. Mouse chimaeras reconstituted with wild-type, Nek7(-/-) or Nlrp3(-/-) haematopoietic cells showed that NEK7 was required for NLRP3 inflammasome activation in vivo. These studies demonstrate that NEK7 is an essential protein that acts downstream of potassium efflux to mediate NLRP3 inflammasome assembly and activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉He, Yuan -- Zeng, Melody Y -- Yang, Dahai -- Motro, Benny -- Nunez, Gabriel -- R01AI063331/AI/NIAID NIH HHS/ -- R01DK091191/DK/NIDDK NIH HHS/ -- T32 HL007517/HL/NHLBI NIH HHS/ -- T32DK094775/DK/NIDDK NIH HHS/ -- T32HL007517/HL/NHLBI NIH HHS/ -- England -- Nature. 2016 Feb 18;530(7590):354-7. doi: 10.1038/nature16959. Epub 2016 Jan 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA. ; The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China. ; The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 52900, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26814970" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis Regulatory Proteins/deficiency/genetics/metabolism ; Biocatalysis ; Carrier Proteins/chemistry/genetics/*metabolism ; Caspase 1/metabolism ; Catalytic Domain ; Cells, Cultured ; Cryopyrin-Associated Periodic Syndromes/genetics ; Enzyme Activation ; HEK293 Cells ; Humans ; Inflammasomes/*chemistry/*metabolism ; Interleukin-1beta/secretion ; Macrophages/metabolism ; Mice ; Mice, Inbred C57BL ; Potassium/*metabolism ; Protein Binding ; Protein Multimerization ; Protein-Serine-Threonine Kinases/chemistry/deficiency/genetics/*metabolism
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  • 22
    Publication Date: 2016-02-04
    Description: The DNA-binding protein PRDM9 directs positioning of the double-strand breaks (DSBs) that initiate meiotic recombination in mice and humans. Prdm9 is the only mammalian speciation gene yet identified and is responsible for sterility phenotypes in male hybrids of certain mouse subspecies. To investigate PRDM9 binding and its role in fertility and meiotic recombination, we humanized the DNA-binding domain of PRDM9 in C57BL/6 mice. This change repositions DSB hotspots and completely restores fertility in male hybrids. Here we show that alteration of one Prdm9 allele impacts the behaviour of DSBs controlled by the other allele at chromosome-wide scales. These effects correlate strongly with the degree to which each PRDM9 variant binds both homologues at the DSB sites it controls. Furthermore, higher genome-wide levels of such 'symmetric' PRDM9 binding associate with increasing fertility measures, and comparisons of individual hotspots suggest binding symmetry plays a downstream role in the recombination process. These findings reveal that subspecies-specific degradation of PRDM9 binding sites by meiotic drive, which steadily increases asymmetric PRDM9 binding, has impacts beyond simply changing hotspot positions, and strongly support a direct involvement in hybrid infertility. Because such meiotic drive occurs across mammals, PRDM9 may play a wider, yet transient, role in the early stages of speciation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4756437/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4756437/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davies, Benjamin -- Hatton, Edouard -- Altemose, Nicolas -- Hussin, Julie G -- Pratto, Florencia -- Zhang, Gang -- Hinch, Anjali Gupta -- Moralli, Daniela -- Biggs, Daniel -- Diaz, Rebeca -- Preece, Chris -- Li, Ran -- Bitoun, Emmanuelle -- Brick, Kevin -- Green, Catherine M -- Camerini-Otero, R Daniel -- Myers, Simon R -- Donnelly, Peter -- 090532/Z/09/Z/Wellcome Trust/United Kingdom -- 095552/Z/11/Z/Wellcome Trust/United Kingdom -- 098387/Z/12/Z/Wellcome Trust/United Kingdom -- Intramural NIH HHS/ -- England -- Nature. 2016 Feb 11;530(7589):171-6. doi: 10.1038/nature16931. Epub 2016 Feb 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Wellcome Trust Centre for Human Genetics, Roosevelt Drive, University of Oxford, Oxford OX3 7BN, UK. ; Department of Statistics, University of Oxford, 24-29 St. Giles', Oxford OX1 3LB, UK. ; Genetics and Biochemistry Branch, National Institute of Diabetes, Digestive and Kidney Diseases, NIH, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26840484" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Binding Sites ; Chromosome Pairing/genetics ; Chromosomes, Mammalian/genetics/metabolism ; DNA Breaks, Double-Stranded ; Female ; *Genetic Speciation ; Histone-Lysine N-Methyltransferase/*chemistry/genetics/*metabolism ; Humans ; Hybridization, Genetic/*genetics ; Infertility/*genetics ; Male ; Meiosis/genetics ; Mice ; Mice, Inbred C57BL ; Protein Binding ; *Protein Engineering ; Protein Structure, Tertiary/genetics ; Recombination, Genetic/genetics ; Zinc Fingers/*genetics
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  • 23
    Publication Date: 2016-04-21
    Description: CRISPR-Cas systems that provide defence against mobile genetic elements in bacteria and archaea have evolved a variety of mechanisms to target and cleave RNA or DNA. The well-studied types I, II and III utilize a set of distinct CRISPR-associated (Cas) proteins for production of mature CRISPR RNAs (crRNAs) and interference with invading nucleic acids. In types I and III, Cas6 or Cas5d cleaves precursor crRNA (pre-crRNA) and the mature crRNAs then guide a complex of Cas proteins (Cascade-Cas3, type I; Csm or Cmr, type III) to target and cleave invading DNA or RNA. In type II systems, RNase III cleaves pre-crRNA base-paired with trans-activating crRNA (tracrRNA) in the presence of Cas9 (refs 13, 14). The mature tracrRNA-crRNA duplex then guides Cas9 to cleave target DNA. Here, we demonstrate a novel mechanism in CRISPR-Cas immunity. We show that type V-A Cpf1 from Francisella novicida is a dual-nuclease that is specific to crRNA biogenesis and target DNA interference. Cpf1 cleaves pre-crRNA upstream of a hairpin structure formed within the CRISPR repeats and thereby generates intermediate crRNAs that are processed further, leading to mature crRNAs. After recognition of a 5'-YTN-3' protospacer adjacent motif on the non-target DNA strand and subsequent probing for an eight-nucleotide seed sequence, Cpf1, guided by the single mature repeat-spacer crRNA, introduces double-stranded breaks in the target DNA to generate a 5' overhang. The RNase and DNase activities of Cpf1 require sequence- and structure-specific binding to the hairpin of crRNA repeats. Cpf1 uses distinct active domains for both nuclease reactions and cleaves nucleic acids in the presence of magnesium or calcium. This study uncovers a new family of enzymes with specific dual endoribonuclease and endonuclease activities, and demonstrates that type V-A constitutes the most minimalistic of the CRISPR-Cas systems so far described.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fonfara, Ines -- Richter, Hagen -- Bratovic, Majda -- Le Rhun, Anais -- Charpentier, Emmanuelle -- England -- Nature. 2016 Apr 28;532(7600):517-21. doi: 10.1038/nature17945. Epub 2016 Apr 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umea Centre for Microbial Research (UCMR), Department of Molecular Biology, Umea University, Umea 90187, Sweden. ; Helmholtz Centre for Infection Research, Department of Regulation in Infection Biology, Braunschweig 38124, Germany. ; Max Planck Institute for Infection Biology, Department of Regulation in Infection Biology, Berlin 10117, Germany. ; Hannover Medical School, Hannover 30625, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27096362" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*metabolism ; Base Sequence ; CRISPR-Associated Proteins/*metabolism ; CRISPR-Cas Systems ; Calcium/metabolism/pharmacology ; Catalytic Domain ; Clustered Regularly Interspaced Short Palindromic Repeats/*genetics ; *DNA Cleavage/drug effects ; Francisella/enzymology ; Molecular Sequence Data ; Nucleic Acid Conformation ; RNA Precursors/chemistry/*genetics/*metabolism ; *RNA Processing, Post-Transcriptional ; RNA, Bacterial/chemistry/genetics/metabolism ; RNA, Guide/biosynthesis/chemistry/genetics/metabolism ; Substrate Specificity
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  • 24
    Publication Date: 2016-03-05
    Description: Hepatocellular carcinoma (HCC) is the second most common cause of cancer-related death. Non-alcoholic fatty liver disease (NAFLD) affects a large proportion of the US population and is considered to be a metabolic predisposition to liver cancer. However, the role of adaptive immune responses in NAFLD-promoted HCC is largely unknown. Here we show, in mouse models and human samples, that dysregulation of lipid metabolism in NAFLD causes a selective loss of intrahepatic CD4(+) but not CD8(+) T lymphocytes, leading to accelerated hepatocarcinogenesis. We also demonstrate that CD4(+) T lymphocytes have greater mitochondrial mass than CD8(+) T lymphocytes and generate higher levels of mitochondrially derived reactive oxygen species (ROS). Disruption of mitochondrial function by linoleic acid, a fatty acid accumulated in NAFLD, causes more oxidative damage than other free fatty acids such as palmitic acid, and mediates selective loss of intrahepatic CD4(+) T lymphocytes. In vivo blockade of ROS reversed NAFLD-induced hepatic CD4(+) T lymphocyte decrease and delayed NAFLD-promoted HCC. Our results provide an unexpected link between lipid dysregulation and impaired anti-tumour surveillance.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4786464/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4786464/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ma, Chi -- Kesarwala, Aparna H -- Eggert, Tobias -- Medina-Echeverz, Jose -- Kleiner, David E -- Jin, Ping -- Stroncek, David F -- Terabe, Masaki -- Kapoor, Veena -- ElGindi, Mei -- Han, Miaojun -- Thornton, Angela M -- Zhang, Haibo -- Egger, Michele -- Luo, Ji -- Felsher, Dean W -- McVicar, Daniel W -- Weber, Achim -- Heikenwalder, Mathias -- Greten, Tim F -- ZIA BC011345-06/Intramural NIH HHS/ -- ZIABC011303/PHS HHS/ -- England -- Nature. 2016 Mar 10;531(7593):253-7. doi: 10.1038/nature16969. Epub 2016 Mar 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gastrointestinal Malignancy Section, Thoracic and Gastrointestinal Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Cell Processing Section, Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Experimental Transplantation and Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Institute of Surgical Pathology, University and University Hospital Zurich, Zurich 8091, Switzerland. ; Division of Oncology, Department of Medicine and Pathology, Stanford University, California 94305, USA. ; Cancer and Inflammation Program, National Cancer Institute, Frederick, Maryland 21702, USA. ; Institute of Virology, Technische Universitat Munchen/Helmholtz Zentrum Munchen, Munich 81675, Germany. ; Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg 69120, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26934227" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD4-Positive T-Lymphocytes/immunology/metabolism/*pathology ; CD8-Positive T-Lymphocytes/immunology/pathology ; *Carcinogenesis/immunology/pathology ; Carcinoma, Hepatocellular/*immunology/metabolism/*pathology ; Case-Control Studies ; Choline/metabolism ; Diet ; Disease Models, Animal ; Genes, myc ; Hepatocytes/metabolism/pathology ; Humans ; Linoleic Acid/metabolism ; Lipid Metabolism ; Liver/immunology/pathology ; Liver Neoplasms/*immunology/metabolism/*pathology ; Male ; Methionine/deficiency ; Mice ; Mice, Inbred C57BL ; Mitochondria/metabolism/pathology ; Non-alcoholic Fatty Liver Disease/*immunology/metabolism/pathology ; Oxidative Stress ; Reactive Oxygen Species/metabolism
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  • 25
    Publication Date: 2016-02-16
    Description: The vertebrate brain is highly complex, but its evolutionary origin remains elusive. Because of the absence of certain developmental domains generally marked by the expression of regulatory genes, the embryonic brain of the lamprey, a jawless vertebrate, had been regarded as representing a less complex, ancestral state of the vertebrate brain. Specifically, the absence of a Hedgehog- and Nkx2.1-positive domain in the lamprey subpallium was thought to be similar to mouse mutants in which the suppression of Nkx2-1 leads to a loss of the medial ganglionic eminence. Here we show that the brain of the inshore hagfish (Eptatretus burgeri), another cyclostome group, develops domains equivalent to the medial ganglionic eminence and rhombic lip, resembling the gnathostome brain. Moreover, further investigation of lamprey larvae revealed that these domains are also present, ruling out the possibility of convergent evolution between hagfish and gnathostomes. Thus, brain regionalization as seen in crown gnathostomes is not an evolutionary innovation of this group, but dates back to the latest vertebrate ancestor before the divergence of cyclostomes and gnathostomes more than 500 million years ago.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sugahara, Fumiaki -- Pascual-Anaya, Juan -- Oisi, Yasuhiro -- Kuraku, Shigehiro -- Aota, Shin-ichi -- Adachi, Noritaka -- Takagi, Wataru -- Hirai, Tamami -- Sato, Noboru -- Murakami, Yasunori -- Kuratani, Shigeru -- England -- Nature. 2016 Mar 3;531(7592):97-100. doi: 10.1038/nature16518. Epub 2016 Feb 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Evolutionary Morphology Laboratory, RIKEN, Kobe 650-0047, Japan. ; Division of Biology, Hyogo College of Medicine, Nishinomiya 663-8501, Japan. ; Development and Function of Inhibitory Neural Circuits, Max Planck Florida Institute for Neuroscience, Jupiter, Florida 33458, USA. ; Phyloinformatics Unit, RIKEN Center for Life Science Technologies, Kobe 650-0047, Japan. ; Department of Organismal Biology and Anatomy, University of Chicago, Chicago, Illinois 60637, USA. ; Division of Gross Anatomy and Morphogenesis, Niigata University Graduate School of Medical and Dental Sciences, Niigata 950-8510, Japan. ; Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26878236" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*anatomy & histology/*embryology ; Female ; Hagfishes/*anatomy & histology/*embryology/genetics ; Humans ; Lampreys/*anatomy & histology/*embryology/genetics/growth & development ; Larva/anatomy & histology ; Male ; Mice ; Molecular Sequence Data ; *Phylogeny ; Synteny/genetics
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  • 26
    Publication Date: 2016-03-05
    Description: Identifying key molecules that launch regeneration has been a long-sought goal. Multiple regenerative animals show an initial wound-associated proliferative response that transits into sustained proliferation if a considerable portion of the body part has been removed. In the axolotl, appendage amputation initiates a round of wound-associated cell cycle induction followed by continued proliferation that is dependent on nerve-derived signals. A wound-associated molecule that triggers the initial proliferative response to launch regeneration has remained obscure. Here, using an expression cloning strategy followed by in vivo gain- and loss-of-function assays, we identified axolotl MARCKS-like protein (MLP) as an extracellularly released factor that induces the initial cell cycle response during axolotl appendage regeneration. The identification of a regeneration-initiating molecule opens the possibility of understanding how to elicit regeneration in other animals.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4795554/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4795554/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sugiura, Takuji -- Wang, Heng -- Barsacchi, Rico -- Simon, Andras -- Tanaka, Elly M -- England -- Nature. 2016 Mar 10;531(7593):237-40. doi: 10.1038/nature16974.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉DFG Research Center for Regenerative Therapies (CRTD), Technische Universitat Dresden, Fetscherstrasse 105, 01307 Dresden, Germany. ; Max Planck Institute for Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307 Dresden, Germany. ; Karolinska Institute, Department of Cell and Molecular Biology, Centre of Developmental Biology for Regenerative Medicine, SE-171 77 Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26934225" target="_blank"〉PubMed〈/a〉
    Keywords: Ambystoma mexicanum/injuries/*physiology ; Amputation, Traumatic/metabolism ; Animals ; Cell Cycle/genetics ; Cell Proliferation/genetics ; Cloning, Molecular ; Extremities/injuries/*physiology ; Humans ; Intracellular Signaling Peptides and Proteins/genetics/*metabolism/secretion ; Membrane Proteins/genetics/*metabolism/secretion ; Mice ; Molecular Sequence Data ; Muscle Fibers, Skeletal/cytology/physiology ; Notophthalmus viridescens/genetics/injuries/physiology ; Regeneration/*physiology ; Tail/cytology/injuries/physiology ; Wound Healing/physiology ; Xenopus ; Zebrafish
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  • 27
    Publication Date: 2015-07-02
    Description: Multicellularity is often considered a prerequisite for morphological complexity, as seen in the camera-type eyes found in several groups of animals. A notable exception exists in single-celled eukaryotes called dinoflagellates, some of which have an eye-like 'ocelloid' consisting of subcellular analogues to a cornea, lens, iris, and retina. These planktonic cells are uncultivated and rarely encountered in environmental samples, obscuring the function and evolutionary origin of the ocelloid. Here we show, using a combination of electron microscopy, tomography, isolated-organelle genomics, and single-cell genomics, that ocelloids are built from pre-existing organelles, including a cornea-like layer made of mitochondria and a retinal body made of anastomosing plastids. We find that the retinal body forms the central core of a network of peridinin-type plastids, which in dinoflagellates and their relatives originated through an ancient endosymbiosis with a red alga. As such, the ocelloid is a chimaeric structure, incorporating organelles with different endosymbiotic histories. The anatomical complexity of single-celled organisms may be limited by the components available for differentiation, but the ocelloid shows that pre-existing organelles can be assembled into a structure so complex that it was initially mistaken for a multicellular eye. Although mitochondria and plastids are acknowledged chiefly for their metabolic roles, they can also be building blocks for greater structural complexity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gavelis, Gregory S -- Hayakawa, Shiho -- White, Richard A 3rd -- Gojobori, Takashi -- Suttle, Curtis A -- Keeling, Patrick J -- Leander, Brian S -- England -- Nature. 2015 Jul 9;523(7559):204-7. doi: 10.1038/nature14593. Epub 2015 Jul 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada. ; 1] Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [2] Department of Botany, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [3] Center for Information Biology, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan. ; Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada. ; 1] Center for Information Biology, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan [2] Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia. ; 1] Department of Botany, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [2] Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [3] Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [4] Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada. ; 1] Department of Botany, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [2] Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada. ; 1] Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [2] Department of Botany, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada [3] Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26131935" target="_blank"〉PubMed〈/a〉
    Keywords: Dinoflagellida/*genetics/physiology/*ultrastructure ; Genome, Protozoan/genetics ; Microscopy, Electron, Scanning ; Microscopy, Electron, Transmission ; Mitochondria/metabolism/ultrastructure ; Molecular Sequence Data ; Plastids/metabolism/ultrastructure ; Protozoan Proteins/genetics ; Rhodophyta/genetics ; *Symbiosis
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  • 28
    Publication Date: 2015-07-15
    Description: Surface polysaccharides are important for bacterial interactions with multicellular organisms, and some are virulence factors in pathogens. In the legume-rhizobium symbiosis, bacterial exopolysaccharides (EPS) are essential for the development of infected root nodules. We have identified a gene in Lotus japonicus, Epr3, encoding a receptor-like kinase that controls this infection. We show that epr3 mutants are defective in perception of purified EPS, and that EPR3 binds EPS directly and distinguishes compatible and incompatible EPS in bacterial competition studies. Expression of Epr3 in epidermal cells within the susceptible root zone shows that the protein is involved in bacterial entry, while rhizobial and plant mutant studies suggest that Epr3 regulates bacterial passage through the plant's epidermal cell layer. Finally, we show that Epr3 expression is inducible and dependent on host perception of bacterial nodulation (Nod) factors. Plant-bacterial compatibility and bacterial access to legume roots is thus regulated by a two-stage mechanism involving sequential receptor-mediated recognition of Nod factor and EPS signals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kawaharada, Y -- Kelly, S -- Nielsen, M Wibroe -- Hjuler, C T -- Gysel, K -- Muszynski, A -- Carlson, R W -- Thygesen, M B -- Sandal, N -- Asmussen, M H -- Vinther, M -- Andersen, S U -- Krusell, L -- Thirup, S -- Jensen, K J -- Ronson, C W -- Blaise, M -- Radutoiu, S -- Stougaard, J -- England -- Nature. 2015 Jul 16;523(7560):308-12. doi: 10.1038/nature14611. Epub 2015 Jul 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Centre for Carbohydrate Recognition and Signalling. Aarhus University, Aarhus 8000 C, Denmark [2] Department of Molecular Biology and Genetics, Aarhus University, Aarhus 8000 C, Denmark. ; 1] Centre for Carbohydrate Recognition and Signalling. Aarhus University, Aarhus 8000 C, Denmark [2] Department of Molecular Biology and Genetics, Aarhus University, Aarhus 8000 C, Denmark [3] Department of Microbiology and Immunology, University of Otago, Dunedin 9054, New Zealand. ; 1] Centre for Carbohydrate Recognition and Signalling. Aarhus University, Aarhus 8000 C, Denmark [2] Department of Chemistry, University of Copenhagen, Frederiksberg 1871 C, Denmark. ; Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602, USA. ; 1] Centre for Carbohydrate Recognition and Signalling. Aarhus University, Aarhus 8000 C, Denmark [2] Department of Microbiology and Immunology, University of Otago, Dunedin 9054, New Zealand.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26153863" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Carbohydrate Sequence ; Lipopolysaccharides/chemistry/*metabolism ; Lotus/genetics/*metabolism/*microbiology ; Molecular Sequence Data ; Mutation/genetics ; Phenotype ; Plant Epidermis/metabolism/microbiology ; Plant Proteins/chemistry/genetics/*metabolism ; Plant Root Nodulation ; Protein Kinases/chemistry/genetics/metabolism ; Protein Structure, Tertiary ; Receptors, Cell Surface/chemistry/genetics/*metabolism ; Rhizobium/*metabolism ; Root Nodules, Plant/metabolism/microbiology ; Signal Transduction ; Species Specificity ; Suppression, Genetic/genetics ; *Symbiosis
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  • 29
    Publication Date: 2015-03-25
    Description: Wing polyphenism is an evolutionarily successful feature found in a wide range of insects. Long-winged morphs can fly, which allows them to escape adverse habitats and track changing resources, whereas short-winged morphs are flightless, but usually possess higher fecundity than the winged morphs. Studies on aphids, crickets and planthoppers have revealed that alternative wing morphs develop in response to various environmental cues, and that the response to these cues may be mediated by developmental hormones, although research in this area has yielded equivocal and conflicting results about exactly which hormones are involved. As it stands, the molecular mechanism underlying wing morph determination in insects has remained elusive. Here we show that two insulin receptors in the migratory brown planthopper Nilaparvata lugens, InR1 and InR2, have opposing roles in controlling long wing versus short wing development by regulating the activity of the forkhead transcription factor Foxo. InR1, acting via the phosphatidylinositol-3-OH kinase (PI(3)K)-protein kinase B (Akt) signalling cascade, leads to the long-winged morph if active and the short-winged morph if inactive. InR2, by contrast, functions as a negative regulator of the InR1-PI(3)K-Akt pathway: suppression of InR2 results in development of the long-winged morph. The brain-secreted ligand Ilp3 triggers development of long-winged morphs. Our findings provide the first evidence of a molecular basis for the regulation of wing polyphenism in insects, and they are also the first demonstration--to our knowledge--of binary control over alternative developmental outcomes, and thus deepen our understanding of the development and evolution of phenotypic plasticity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xu, Hai-Jun -- Xue, Jian -- Lu, Bo -- Zhang, Xue-Chao -- Zhuo, Ji-Chong -- He, Shu-Fang -- Ma, Xiao-Fang -- Jiang, Ya-Qin -- Fan, Hai-Wei -- Xu, Ji-Yu -- Ye, Yu-Xuan -- Pan, Peng-Lu -- Li, Qiao -- Bao, Yan-Yuan -- Nijhout, H Frederik -- Zhang, Chuan-Xi -- England -- Nature. 2015 Mar 26;519(7544):464-7. doi: 10.1038/nature14286. Epub 2015 Mar 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China. ; Department of Biology, Duke University, Durham, North Carolina 27708, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25799997" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Forkhead Transcription Factors/deficiency/metabolism ; Hemiptera/*anatomy & histology/enzymology/genetics/*metabolism ; Insulin/metabolism ; Male ; Molecular Sequence Data ; Phosphatidylinositol 3-Kinases/metabolism ; Proto-Oncogene Proteins c-akt/metabolism ; Receptor, Insulin/deficiency/*metabolism ; Signal Transduction ; Wings, Animal/anatomy & histology/enzymology/*growth & development/*metabolism
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  • 30
    Publication Date: 2015-08-01
    Description: Intracellular energy distribution has attracted much interest and has been proposed to occur in skeletal muscle via metabolite-facilitated diffusion; however, genetic evidence suggests that facilitated diffusion is not critical for normal function. We hypothesized that mitochondrial structure minimizes metabolite diffusion distances in skeletal muscle. Here we demonstrate a mitochondrial reticulum providing a conductive pathway for energy distribution, in the form of the proton-motive force, throughout the mouse skeletal muscle cell. Within this reticulum, we find proteins associated with mitochondrial proton-motive force production preferentially in the cell periphery and proteins that use the proton-motive force for ATP production in the cell interior near contractile and transport ATPases. Furthermore, we show a rapid, coordinated depolarization of the membrane potential component of the proton-motive force throughout the cell in response to spatially controlled uncoupling of the cell interior. We propose that membrane potential conduction via the mitochondrial reticulum is the dominant pathway for skeletal muscle energy distribution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glancy, Brian -- Hartnell, Lisa M -- Malide, Daniela -- Yu, Zu-Xi -- Combs, Christian A -- Connelly, Patricia S -- Subramaniam, Sriram -- Balaban, Robert S -- Intramural NIH HHS/ -- England -- Nature. 2015 Jul 30;523(7562):617-20. doi: 10.1038/nature14614.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26223627" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/metabolism ; Adenosine Triphosphate/biosynthesis/metabolism ; Animals ; Diffusion ; *Energy Metabolism ; Male ; Membrane Potential, Mitochondrial ; Mice ; Mice, Inbred C57BL ; Mitochondria, Muscle/*metabolism ; Mitochondrial Proteins/metabolism ; Muscle, Skeletal/*cytology/*metabolism ; Proton-Motive Force
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  • 31
    Publication Date: 2015-11-26
    Description: FOXP3(+) regulatory T cells (Treg cells) prevent autoimmunity by limiting the effector activity of T cells that have escaped thymic negative selection or peripheral inactivation. Despite the information available about molecular factors mediating the suppressive function of Treg cells, the relevant cellular events in intact tissues remain largely unexplored, and whether Treg cells prevent activation of self-specific T cells or primarily limit damage from such cells has not been determined. Here we use multiplex, quantitative imaging in mice to show that, within secondary lymphoid tissues, highly suppressive Treg cells expressing phosphorylated STAT5 exist in discrete clusters with rare IL-2-positive T cells that are activated by self-antigens. This local IL-2 induction of STAT5 phosphorylation in Treg cells is part of a feedback circuit that limits further autoimmune responses. Inducible ablation of T cell receptor expression by Treg cells reduces their regulatory capacity and disrupts their localization in clusters, resulting in uncontrolled effector T cell responses. Our data thus reveal that autoreactive T cells are activated to cytokine production on a regular basis, with physically co-clustering T cell receptor-stimulated Treg cells responding in a negative feedback manner to suppress incipient autoimmunity and maintain immune homeostasis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4702500/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4702500/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Zhiduo -- Gerner, Michael Y -- Van Panhuys, Nicholas -- Levine, Andrew G -- Rudensky, Alexander Y -- Germain, Ronald N -- R37 AI034206/AI/NIAID NIH HHS/ -- R37AI034206/AI/NIAID NIH HHS/ -- T32GM007739/GM/NIGMS NIH HHS/ -- Z01 AI000403-25/Intramural NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Dec 10;528(7581):225-30. doi: 10.1038/nature16169. Epub 2015 Nov 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lymphocyte Biology Section, Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892-1892, USA. ; Howard Hughes Medical Institute, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA. ; Immunology Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26605524" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Movement ; Dendritic Cells/cytology/immunology ; Female ; Gene Expression Regulation ; Homeostasis/*immunology ; Mice ; Mice, Inbred C57BL ; Phenotype ; Protein Transport ; STAT5 Transcription Factor/metabolism ; T-Lymphocytes, Regulatory/*immunology
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  • 32
    Publication Date: 2015-11-10
    Description: Gene expression is regulated by transcription factors (TFs), proteins that recognize short DNA sequence motifs. Such sequences are very common in the human genome, and an important determinant of the specificity of gene expression is the cooperative binding of multiple TFs to closely located motifs. However, interactions between DNA-bound TFs have not been systematically characterized. To identify TF pairs that bind cooperatively to DNA, and to characterize their spacing and orientation preferences, we have performed consecutive affinity-purification systematic evolution of ligands by exponential enrichment (CAP-SELEX) analysis of 9,400 TF-TF-DNA interactions. This analysis revealed 315 TF-TF interactions recognizing 618 heterodimeric motifs, most of which have not been previously described. The observed cooperativity occurred promiscuously between TFs from diverse structural families. Structural analysis of the TF pairs, including a novel crystal structure of MEIS1 and DLX3 bound to their identified recognition site, revealed that the interactions between the TFs were predominantly mediated by DNA. Most TF pair sites identified involved a large overlap between individual TF recognition motifs, and resulted in recognition of composite sites that were markedly different from the individual TF's motifs. Together, our results indicate that the DNA molecule commonly plays an active role in cooperative interactions that define the gene regulatory lexicon.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jolma, Arttu -- Yin, Yimeng -- Nitta, Kazuhiro R -- Dave, Kashyap -- Popov, Alexander -- Taipale, Minna -- Enge, Martin -- Kivioja, Teemu -- Morgunova, Ekaterina -- Taipale, Jussi -- England -- Nature. 2015 Nov 19;527(7578):384-8. doi: 10.1038/nature15518. Epub 2015 Nov 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biosciences and Nutrition, Karolinska Institutet, SE 141 83, Sweden. ; European Synchrotron Radiation Facility, 38043 Grenoble, France. ; Genome-Scale Biology Program, University of Helsinki, P.O. Box 63, FI-00014, Finland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26550823" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Binding Sites/genetics ; Crystallography, X-Ray ; DNA/*genetics/*metabolism ; Gene Expression Regulation/genetics ; Humans ; Molecular Sequence Data ; Nucleotide Motifs/genetics ; Reproducibility of Results ; *Substrate Specificity/genetics ; Transcription Factors/*metabolism
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  • 33
    Publication Date: 2015-03-11
    Description: Immune checkpoint inhibitors result in impressive clinical responses, but optimal results will require combination with each other and other therapies. This raises fundamental questions about mechanisms of non-redundancy and resistance. Here we report major tumour regressions in a subset of patients with metastatic melanoma treated with an anti-CTLA4 antibody (anti-CTLA4) and radiation, and reproduced this effect in mouse models. Although combined treatment improved responses in irradiated and unirradiated tumours, resistance was common. Unbiased analyses of mice revealed that resistance was due to upregulation of PD-L1 on melanoma cells and associated with T-cell exhaustion. Accordingly, optimal response in melanoma and other cancer types requires radiation, anti-CTLA4 and anti-PD-L1/PD-1. Anti-CTLA4 predominantly inhibits T-regulatory cells (Treg cells), thereby increasing the CD8 T-cell to Treg (CD8/Treg) ratio. Radiation enhances the diversity of the T-cell receptor (TCR) repertoire of intratumoral T cells. Together, anti-CTLA4 promotes expansion of T cells, while radiation shapes the TCR repertoire of the expanded peripheral clones. Addition of PD-L1 blockade reverses T-cell exhaustion to mitigate depression in the CD8/Treg ratio and further encourages oligoclonal T-cell expansion. Similarly to results from mice, patients on our clinical trial with melanoma showing high PD-L1 did not respond to radiation plus anti-CTLA4, demonstrated persistent T-cell exhaustion, and rapidly progressed. Thus, PD-L1 on melanoma cells allows tumours to escape anti-CTLA4-based therapy, and the combination of radiation, anti-CTLA4 and anti-PD-L1 promotes response and immunity through distinct mechanisms.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4401634/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4401634/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Twyman-Saint Victor, Christina -- Rech, Andrew J -- Maity, Amit -- Rengan, Ramesh -- Pauken, Kristen E -- Stelekati, Erietta -- Benci, Joseph L -- Xu, Bihui -- Dada, Hannah -- Odorizzi, Pamela M -- Herati, Ramin S -- Mansfield, Kathleen D -- Patsch, Dana -- Amaravadi, Ravi K -- Schuchter, Lynn M -- Ishwaran, Hemant -- Mick, Rosemarie -- Pryma, Daniel A -- Xu, Xiaowei -- Feldman, Michael D -- Gangadhar, Tara C -- Hahn, Stephen M -- Wherry, E John -- Vonderheide, Robert H -- Minn, Andy J -- KL2TR000139/TR/NCATS NIH HHS/ -- P01AI112521/AI/NIAID NIH HHS/ -- P30 CA016672/CA/NCI NIH HHS/ -- P30CA016520/CA/NCI NIH HHS/ -- P50 CA174523/CA/NCI NIH HHS/ -- P50CA174523/CA/NCI NIH HHS/ -- R01 AI105343/AI/NIAID NIH HHS/ -- R01 CA158186/CA/NCI NIH HHS/ -- R01 CA163739/CA/NCI NIH HHS/ -- R01AI105343/AI/NIAID NIH HHS/ -- R01CA158186/CA/NCI NIH HHS/ -- R01CA163739/CA/NCI NIH HHS/ -- R01CA172651/CA/NCI NIH HHS/ -- T32DK007066/DK/NIDDK NIH HHS/ -- U01AI095608/AI/NIAID NIH HHS/ -- U19 AI082630/AI/NIAID NIH HHS/ -- U19AI082630/AI/NIAID NIH HHS/ -- UL1RR024134/RR/NCRR NIH HHS/ -- England -- Nature. 2015 Apr 16;520(7547):373-7. doi: 10.1038/nature14292. Epub 2015 Mar 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Division of Biostatistics, Department of Public Health Sciences, University of Miami, Miami, Florida 33136, USA. ; 1] Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Department of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [3] Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [3] Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [4] Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [3] Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [4] Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25754329" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD274/*antagonists & inhibitors/metabolism ; CTLA-4 Antigen/*antagonists & inhibitors ; Cell Cycle Checkpoints/*drug effects ; Female ; Humans ; Melanoma/*drug therapy/*immunology/pathology/*radiotherapy ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Receptors, Antigen, T-Cell/drug effects/immunology/metabolism ; T-Lymphocytes/cytology/*drug effects/immunology/*radiation effects ; T-Lymphocytes, Regulatory/drug effects/immunology/radiation effects
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 34
    Publication Date: 2015-09-10
    Description: Somaclonal variation arises in plants and animals when differentiated somatic cells are induced into a pluripotent state, but the resulting clones differ from each other and from their parents. In agriculture, somaclonal variation has hindered the micropropagation of elite hybrids and genetically modified crops, but the mechanism responsible remains unknown. The oil palm fruit 'mantled' abnormality is a somaclonal variant arising from tissue culture that drastically reduces yield, and has largely halted efforts to clone elite hybrids for oil production. Widely regarded as an epigenetic phenomenon, 'mantling' has defied explanation, but here we identify the MANTLED locus using epigenome-wide association studies of the African oil palm Elaeis guineensis. DNA hypomethylation of a LINE retrotransposon related to rice Karma, in the intron of the homeotic gene DEFICIENS, is common to all mantled clones and is associated with alternative splicing and premature termination. Dense methylation near the Karma splice site (termed the Good Karma epiallele) predicts normal fruit set, whereas hypomethylation (the Bad Karma epiallele) predicts homeotic transformation, parthenocarpy and marked loss of yield. Loss of Karma methylation and of small RNA in tissue culture contributes to the origin of mantled, while restoration in spontaneous revertants accounts for non-Mendelian inheritance. The ability to predict and cull mantling at the plantlet stage will facilitate the introduction of higher performing clones and optimize environmentally sensitive land resources.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ong-Abdullah, Meilina -- Ordway, Jared M -- Jiang, Nan -- Ooi, Siew-Eng -- Kok, Sau-Yee -- Sarpan, Norashikin -- Azimi, Nuraziyan -- Hashim, Ahmad Tarmizi -- Ishak, Zamzuri -- Rosli, Samsul Kamal -- Malike, Fadila Ahmad -- Bakar, Nor Azwani Abu -- Marjuni, Marhalil -- Abdullah, Norziha -- Yaakub, Zulkifli -- Amiruddin, Mohd Din -- Nookiah, Rajanaidu -- Singh, Rajinder -- Low, Eng-Ti Leslie -- Chan, Kuang-Lim -- Azizi, Norazah -- Smith, Steven W -- Bacher, Blaire -- Budiman, Muhammad A -- Van Brunt, Andrew -- Wischmeyer, Corey -- Beil, Melissa -- Hogan, Michael -- Lakey, Nathan -- Lim, Chin-Ching -- Arulandoo, Xaviar -- Wong, Choo-Kien -- Choo, Chin-Nee -- Wong, Wei-Chee -- Kwan, Yen-Yen -- Alwee, Sharifah Shahrul Rabiah Syed -- Sambanthamurthi, Ravigadevi -- Martienssen, Robert A -- R01 GM067014/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Sep 24;525(7570):533-7. doi: 10.1038/nature15365. Epub 2015 Sep 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Malaysian Palm Oil Board, 6, Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia. ; Orion Genomics, 4041 Forest Park Avenue, St Louis, Missouri 63108, USA. ; United Plantations Berhad, Jendarata Estate, 36009 Teluk Intan, Perak, Malaysia. ; Applied Agricultural Resources Sdn Bhd, No. 11, Jalan Teknologi 3/6, Taman Sains Selangor 1, 47810 Kota Damansara, Petaling Jaya, Selangor, Malaysia. ; FELDA Global Ventures R&D Sdn Bhd, c/o FELDA Biotechnology Centre, PT 23417, Lengkuk Teknologi, 71760 Bandar Enstek, Negeri Sembilan, Malaysia. ; Howard Hughes Medical Institute-Gordon and Betty Moore Foundation, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26352475" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Alternative Splicing/genetics ; Arecaceae/*genetics/metabolism ; *DNA Methylation ; Epigenesis, Genetic/*genetics ; *Epigenomics ; Fruit/genetics ; Genes, Homeobox/genetics ; Genetic Association Studies ; Genome, Plant/*genetics ; Introns/genetics ; Molecular Sequence Data ; *Phenotype ; Plant Oils/analysis/metabolism ; RNA Splice Sites/genetics ; RNA, Small Interfering/genetics ; Retroelements/*genetics
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  • 35
    Publication Date: 2015-02-18
    Description: Enhancers regulate spatiotemporal gene expression and impart cell-specific transcriptional outputs that drive cell identity. Super-enhancers (SEs), also known as stretch-enhancers, are a subset of enhancers especially important for genes associated with cell identity and genetic risk of disease. CD4(+) T cells are critical for host defence and autoimmunity. Here we analysed maps of mouse T-cell SEs as a non-biased means of identifying key regulatory nodes involved in cell specification. We found that cytokines and cytokine receptors were the dominant class of genes exhibiting SE architecture in T cells. Nonetheless, the locus encoding Bach2, a key negative regulator of effector differentiation, emerged as the most prominent T-cell SE, revealing a network in which SE-associated genes critical for T-cell biology are repressed by BACH2. Disease-associated single-nucleotide polymorphisms for immune-mediated disorders, including rheumatoid arthritis, were highly enriched for T-cell SEs versus typical enhancers or SEs in other cell lineages. Intriguingly, treatment of T cells with the Janus kinase (JAK) inhibitor tofacitinib disproportionately altered the expression of rheumatoid arthritis risk genes with SE structures. Together, these results indicate that genes with SE architecture in T cells encompass a variety of cytokines and cytokine receptors but are controlled by a 'guardian' transcription factor, itself endowed with an SE. Thus, enumeration of SEs allows the unbiased determination of key regulatory nodes in T cells, which are preferentially modulated by pharmacological intervention.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4409450/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4409450/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vahedi, Golnaz -- Kanno, Yuka -- Furumoto, Yasuko -- Jiang, Kan -- Parker, Stephen C J -- Erdos, Michael R -- Davis, Sean R -- Roychoudhuri, Rahul -- Restifo, Nicholas P -- Gadina, Massimo -- Tang, Zhonghui -- Ruan, Yijun -- Collins, Francis S -- Sartorelli, Vittorio -- O'Shea, John J -- 105663/Z/14/Z/Wellcome Trust/United Kingdom -- R01 CA186714/CA/NCI NIH HHS/ -- ZIA AR041159-07/Intramural NIH HHS/ -- England -- Nature. 2015 Apr 23;520(7548):558-62. doi: 10.1038/nature14154. Epub 2015 Feb 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lymphocyte Cell Biology Section, National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, Maryland 20892, USA. ; Translational Immunology Section, NIAMS, NIH, Bethesda, Maryland 20892, USA. ; Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland 20892, USA. ; Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland 20892, USA. ; The Jackson Laboratory for Genomic Medicine and Department of Genetic and Development Biology, University of Connecticut, Farmington, Connecticut 06030, USA. ; Laboratory of Muscle Stem Cells and Gene Regulation, NIAMS, NIH, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25686607" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arthritis, Rheumatoid/*genetics/immunology/pathology ; Basic-Leucine Zipper Transcription Factors/metabolism ; Cell Differentiation/genetics ; Cell Lineage/genetics ; Enhancer Elements, Genetic/*genetics ; Gene Expression Regulation/genetics ; Genetic Predisposition to Disease/genetics ; Janus Kinase 3/antagonists & inhibitors ; Mice ; Mice, Inbred C57BL ; Piperidines/pharmacology ; Pyrimidines/pharmacology ; Pyrroles/pharmacology ; RNA, Untranslated/genetics ; T-Lymphocytes, Helper-Inducer/immunology/*metabolism/*pathology ; Transcription, Genetic/genetics ; p300-CBP Transcription Factors/metabolism
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  • 36
    Publication Date: 2015-08-20
    Description: Epigenetic modifiers have fundamental roles in defining unique cellular identity through the establishment and maintenance of lineage-specific chromatin and methylation status. Several DNA modifications such as 5-hydroxymethylcytosine (5hmC) are catalysed by the ten eleven translocation (Tet) methylcytosine dioxygenase family members, and the roles of Tet proteins in regulating chromatin architecture and gene transcription independently of DNA methylation have been gradually uncovered. However, the regulation of immunity and inflammation by Tet proteins independent of their role in modulating DNA methylation remains largely unknown. Here we show that Tet2 selectively mediates active repression of interleukin-6 (IL-6) transcription during inflammation resolution in innate myeloid cells, including dendritic cells and macrophages. Loss of Tet2 resulted in the upregulation of several inflammatory mediators, including IL-6, at late phase during the response to lipopolysaccharide challenge. Tet2-deficient mice were more susceptible to endotoxin shock and dextran-sulfate-sodium-induced colitis, displaying a more severe inflammatory phenotype and increased IL-6 production compared to wild-type mice. IkappaBzeta, an IL-6-specific transcription factor, mediated specific targeting of Tet2 to the Il6 promoter, further indicating opposite regulatory roles of IkappaBzeta at initial and resolution phases of inflammation. For the repression mechanism, independent of DNA methylation and hydroxymethylation, Tet2 recruited Hdac2 and repressed transcription of Il6 via histone deacetylation. We provide mechanistic evidence for the gene-specific transcription repression activity of Tet2 via histone deacetylation and for the prevention of constant transcription activation at the chromatin level for resolving inflammation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4697747/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4697747/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Qian -- Zhao, Kai -- Shen, Qicong -- Han, Yanmei -- Gu, Yan -- Li, Xia -- Zhao, Dezhi -- Liu, Yiqi -- Wang, Chunmei -- Zhang, Xiang -- Su, Xiaoping -- Liu, Juan -- Ge, Wei -- Levine, Ross L -- Li, Nan -- Cao, Xuetao -- P30 CA008748/CA/NCI NIH HHS/ -- R01 CA173636/CA/NCI NIH HHS/ -- England -- Nature. 2015 Sep 17;525(7569):389-93. doi: 10.1038/nature15252. Epub 2015 Aug 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Key Laboratory of Medical Molecular Biology &Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100005, China. ; National Key Laboratory of Medical Immunology &Institute of Immunology, Second Military Medical University, Shanghai 200433, China. ; Human Oncology and Pathogenesis Program and Leukemia Service, Department of Medicine, Memorial Sloan-Kettering Cancer, New York, New York 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26287468" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Animals ; Chromatin/chemistry/genetics/metabolism ; Colitis/enzymology/immunology/metabolism ; DNA Methylation ; DNA-Binding Proteins/deficiency/*metabolism ; Dendritic Cells/cytology/metabolism ; Down-Regulation/genetics ; Epigenesis, Genetic ; Female ; HEK293 Cells ; Histone Deacetylase 2/*metabolism ; Histones/chemistry/metabolism ; Humans ; I-kappa B Proteins/metabolism ; Inflammation/enzymology/immunology/*metabolism ; Interleukin-6/*antagonists & inhibitors/*biosynthesis/genetics/immunology ; Macrophages/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Promoter Regions, Genetic/genetics ; Proto-Oncogene Proteins/deficiency/*metabolism ; Transcription, Genetic
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  • 37
    Publication Date: 2015-07-23
    Description: The human lens is comprised largely of crystallin proteins assembled into a highly ordered, interactive macro-structure essential for lens transparency and refractive index. Any disruption of intra- or inter-protein interactions will alter this delicate structure, exposing hydrophobic surfaces, with consequent protein aggregation and cataract formation. Cataracts are the most common cause of blindness worldwide, affecting tens of millions of people, and currently the only treatment is surgical removal of cataractous lenses. The precise mechanisms by which lens proteins both prevent aggregation and maintain lens transparency are largely unknown. Lanosterol is an amphipathic molecule enriched in the lens. It is synthesized by lanosterol synthase (LSS) in a key cyclization reaction of a cholesterol synthesis pathway. Here we identify two distinct homozygous LSS missense mutations (W581R and G588S) in two families with extensive congenital cataracts. Both of these mutations affect highly conserved amino acid residues and impair key catalytic functions of LSS. Engineered expression of wild-type, but not mutant, LSS prevents intracellular protein aggregation of various cataract-causing mutant crystallins. Treatment by lanosterol, but not cholesterol, significantly decreased preformed protein aggregates both in vitro and in cell-transfection experiments. We further show that lanosterol treatment could reduce cataract severity and increase transparency in dissected rabbit cataractous lenses in vitro and cataract severity in vivo in dogs. Our study identifies lanosterol as a key molecule in the prevention of lens protein aggregation and points to a novel strategy for cataract prevention and treatment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhao, Ling -- Chen, Xiang-Jun -- Zhu, Jie -- Xi, Yi-Bo -- Yang, Xu -- Hu, Li-Dan -- Ouyang, Hong -- Patel, Sherrina H -- Jin, Xin -- Lin, Danni -- Wu, Frances -- Flagg, Ken -- Cai, Huimin -- Li, Gen -- Cao, Guiqun -- Lin, Ying -- Chen, Daniel -- Wen, Cindy -- Chung, Christopher -- Wang, Yandong -- Qiu, Austin -- Yeh, Emily -- Wang, Wenqiu -- Hu, Xun -- Grob, Seanna -- Abagyan, Ruben -- Su, Zhiguang -- Tjondro, Harry Christianto -- Zhao, Xi-Juan -- Luo, Hongrong -- Hou, Rui -- Perry, J Jefferson P -- Gao, Weiwei -- Kozak, Igor -- Granet, David -- Li, Yingrui -- Sun, Xiaodong -- Wang, Jun -- Zhang, Liangfang -- Liu, Yizhi -- Yan, Yong-Bin -- Zhang, Kang -- England -- Nature. 2015 Jul 30;523(7562):607-11. doi: 10.1038/nature14650. Epub 2015 Jul 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China [2] State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China [3] Department of Ophthalmology and Biomaterials and Tissue Engineering Center, Institute for Engineering in Medicine, University of California San Diego, La Jolla, California 92093, USA. ; State Key Laboratory of Membrane Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China. ; 1] Department of Ophthalmology and Biomaterials and Tissue Engineering Center, Institute for Engineering in Medicine, University of California San Diego, La Jolla, California 92093, USA [2] Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China. ; BGI-Shenzhen, Shenzhen 518083, China. ; 1] State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China [2] Department of Ophthalmology and Biomaterials and Tissue Engineering Center, Institute for Engineering in Medicine, University of California San Diego, La Jolla, California 92093, USA. ; Department of Ophthalmology and Biomaterials and Tissue Engineering Center, Institute for Engineering in Medicine, University of California San Diego, La Jolla, California 92093, USA. ; 1] Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China [2] Guangzhou KangRui Biological Pharmaceutical Technology Company, Guangzhou 510005, China. ; Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China. ; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China. ; 1] Department of Ophthalmology and Biomaterials and Tissue Engineering Center, Institute for Engineering in Medicine, University of California San Diego, La Jolla, California 92093, USA [2] CapitalBio Genomics Co., Ltd., Dongguan 523808, China. ; 1] Department of Ophthalmology and Biomaterials and Tissue Engineering Center, Institute for Engineering in Medicine, University of California San Diego, La Jolla, California 92093, USA [2] Department of Ophthalmology, Shanghai First People's Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai 20080, China. ; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, USA. ; Guangzhou KangRui Biological Pharmaceutical Technology Company, Guangzhou 510005, China. ; Department of Biochemistry, University of California Riverside, Riverside, California 92521, USA. ; 1] Department of Ophthalmology and Biomaterials and Tissue Engineering Center, Institute for Engineering in Medicine, University of California San Diego, La Jolla, California 92093, USA [2] Department of Nanoengineering, University of California, San Diego, La Jolla, California 92093, USA. ; King Khaled Eye Specialist Hospital, Riyadh, Kingdom of Saudi Arabia. ; Department of Ophthalmology, Shanghai First People's Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai 20080, China. ; Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China. ; 1] Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China [2] State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China [3] Department of Ophthalmology and Biomaterials and Tissue Engineering Center, Institute for Engineering in Medicine, University of California San Diego, La Jolla, California 92093, USA [4] Department of Nanoengineering, University of California, San Diego, La Jolla, California 92093, USA [5] Veterans Administration Healthcare System, San Diego, California 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26200341" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Amino Acid Sequence ; Amyloid/chemistry/drug effects/metabolism/ultrastructure ; Animals ; Base Sequence ; Cataract/congenital/*drug therapy/genetics/*metabolism/pathology ; Cell Line ; Child ; Crystallins/chemistry/genetics/metabolism/ultrastructure ; Dogs ; Female ; Humans ; Lanosterol/administration & dosage/*pharmacology/*therapeutic use ; Lens, Crystalline/drug effects/metabolism/pathology ; Male ; Models, Molecular ; Molecular Sequence Data ; Mutant Proteins/chemistry/genetics/metabolism/ultrastructure ; Pedigree ; Protein Aggregates/*drug effects ; Protein Aggregation, Pathological/*drug therapy/pathology
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  • 38
    Publication Date: 2015-11-13
    Description: Plant genomes, and eukaryotic genomes in general, are typically repetitive, polyploid and heterozygous, which complicates genome assembly. The short read lengths of early Sanger and current next-generation sequencing platforms hinder assembly through complex repeat regions, and many draft and reference genomes are fragmented, lacking skewed GC and repetitive intergenic sequences, which are gaining importance due to projects like the Encyclopedia of DNA Elements (ENCODE). Here we report the whole-genome sequencing and assembly of the desiccation-tolerant grass Oropetium thomaeum. Using only single-molecule real-time sequencing, which generates long (〉16 kilobases) reads with random errors, we assembled 99% (244 megabases) of the Oropetium genome into 625 contigs with an N50 length of 2.4 megabases. Oropetium is an example of a 'near-complete' draft genome which includes gapless coverage over gene space as well as intergenic sequences such as centromeres, telomeres, transposable elements and rRNA clusters that are typically unassembled in draft genomes. Oropetium has 28,466 protein-coding genes and 43% repeat sequences, yet with 30% more compact euchromatic regions it is the smallest known grass genome. The Oropetium genome demonstrates the utility of single-molecule real-time sequencing for assembling high-quality plant and other eukaryotic genomes, and serves as a valuable resource for the plant comparative genomics community.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉VanBuren, Robert -- Bryant, Doug -- Edger, Patrick P -- Tang, Haibao -- Burgess, Diane -- Challabathula, Dinakar -- Spittle, Kristi -- Hall, Richard -- Gu, Jenny -- Lyons, Eric -- Freeling, Michael -- Bartels, Dorothea -- Ten Hallers, Boudewijn -- Hastie, Alex -- Michael, Todd P -- Mockler, Todd C -- England -- Nature. 2015 Nov 26;527(7579):508-11. doi: 10.1038/nature15714. Epub 2015 Nov 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Donald Danforth Plant Science Center, St Louis, Missouri 63132, USA. ; Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, California 94720, USA. ; Department of Horticulture, Michigan State University, East Lansing, Michigan 48823, USA. ; iPlant Collaborative, School of Plant Sciences, University of Arizona, Tucson, Arizona 85721, USA. ; Center for Genomics and Biotechnology, Haixia Institute of Science and Technology (HIST), Fujian Agriculture and Forestry University, Fuzhou 350002, China. ; IMBIO, University of Bonn, Kirschallee 1, D-53115 Bonn, Germany. ; Pacific Biosciences, Menlo Park, California 94025, USA. ; BioNano Genomics, San Diego, California 92121, USA. ; Ibis Biosciences, Carlsbad, California 92008, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26560029" target="_blank"〉PubMed〈/a〉
    Keywords: Acclimatization/genetics ; Contig Mapping ; Dehydration ; Desiccation ; Droughts ; Genes, Plant/genetics ; Genome, Plant/*genetics ; Genomics ; Molecular Sequence Data ; Poaceae/*genetics ; Sequence Analysis, DNA/*methods
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  • 39
    Publication Date: 2015-04-16
    Description: Oxytocin is important for social interactions and maternal behaviour. However, little is known about when, where and how oxytocin modulates neural circuits to improve social cognition. Here we show how oxytocin enables pup retrieval behaviour in female mice by enhancing auditory cortical pup call responses. Retrieval behaviour required the left but not right auditory cortex, was accelerated by oxytocin in the left auditory cortex, and oxytocin receptors were preferentially expressed in the left auditory cortex. Neural responses to pup calls were lateralized, with co-tuned and temporally precise excitatory and inhibitory responses in the left cortex of maternal but not pup-naive adults. Finally, pairing calls with oxytocin enhanced responses by balancing the magnitude and timing of inhibition with excitation. Our results describe fundamental synaptic mechanisms by which oxytocin increases the salience of acoustic social stimuli. Furthermore, oxytocin-induced plasticity provides a biological basis for lateralization of auditory cortical processing.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4409554/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4409554/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marlin, Bianca J -- Mitre, Mariela -- D'amour, James A -- Chao, Moses V -- Froemke, Robert C -- DC009635/DC/NIDCD NIH HHS/ -- DC12557/DC/NIDCD NIH HHS/ -- P30 CA016087/CA/NCI NIH HHS/ -- R00 DC009635/DC/NIDCD NIH HHS/ -- R01 DC012557/DC/NIDCD NIH HHS/ -- T32 MH019524/MH/NIMH NIH HHS/ -- England -- Nature. 2015 Apr 23;520(7548):499-504. doi: 10.1038/nature14402. Epub 2015 Apr 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Skirball Institute for Biomolecular Medicine, New York University School of Medicine, New York, New York 10016, USA [2] Neuroscience Institute, New York University School of Medicine, New York, New York 10016, USA [3] Department of Otolaryngology, New York University School of Medicine, New York, New York 10016, USA [4] Department of Neuroscience and Physiology, New York University School of Medicine, New York, New York 10016, USA. ; 1] Skirball Institute for Biomolecular Medicine, New York University School of Medicine, New York, New York 10016, USA [2] Neuroscience Institute, New York University School of Medicine, New York, New York 10016, USA [3] Department of Otolaryngology, New York University School of Medicine, New York, New York 10016, USA [4] Department of Neuroscience and Physiology, New York University School of Medicine, New York, New York 10016, USA [5] Department of Cell Biology, New York University School of Medicine, New York, New York 10016, USA [6] Department of Psychiatry, New York University School of Medicine, New York, New York 10016, USA. ; 1] Skirball Institute for Biomolecular Medicine, New York University School of Medicine, New York, New York 10016, USA [2] Neuroscience Institute, New York University School of Medicine, New York, New York 10016, USA [3] Department of Neuroscience and Physiology, New York University School of Medicine, New York, New York 10016, USA [4] Department of Cell Biology, New York University School of Medicine, New York, New York 10016, USA [5] Department of Psychiatry, New York University School of Medicine, New York, New York 10016, USA [6] Center for Neural Science, New York University, New York, New York 10003, USA. ; 1] Skirball Institute for Biomolecular Medicine, New York University School of Medicine, New York, New York 10016, USA [2] Neuroscience Institute, New York University School of Medicine, New York, New York 10016, USA [3] Department of Otolaryngology, New York University School of Medicine, New York, New York 10016, USA [4] Department of Neuroscience and Physiology, New York University School of Medicine, New York, New York 10016, USA [5] Center for Neural Science, New York University, New York, New York 10003, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25874674" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustic Stimulation ; Animals ; Animals, Newborn ; Auditory Cortex/cytology/*physiology ; Auditory Perception/physiology ; Evoked Potentials, Auditory ; Female ; Male ; Maternal Behavior/*physiology ; Mice ; Mice, Inbred C57BL ; Neural Inhibition/*physiology ; Neuronal Plasticity ; Oxytocin/*metabolism ; Receptors, Oxytocin/metabolism ; Sexual Abstinence ; Vocalization, Animal
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  • 40
    Publication Date: 2015-01-22
    Description: Low-molecular-mass thiols in organisms are well known for their redox-relevant role in protection against various endogenous and exogenous stresses. In eukaryotes and Gram-negative bacteria, the primary thiol is glutathione (GSH), a cysteinyl-containing tripeptide. In contrast, mycothiol (MSH), a cysteinyl pseudo-disaccharide, is dominant in Gram-positive actinobacteria, including antibiotic-producing actinomycetes and pathogenic mycobacteria. MSH is equivalent to GSH, either as a cofactor or as a substrate, in numerous biochemical processes, most of which have not been characterized, largely due to the dearth of information concerning MSH-dependent proteins. Actinomycetes are able to produce another thiol, ergothioneine (EGT), a histidine betaine derivative that is widely assimilated by plants and animals for variable physiological activities. The involvement of EGT in enzymatic reactions, however, lacks any precedent. Here we report that the unprecedented coupling of two bacterial thiols, MSH and EGT, has a constructive role in the biosynthesis of lincomycin A, a sulfur-containing lincosamide (C8 sugar) antibiotic that has been widely used for half a century to treat Gram-positive bacterial infections. EGT acts as a carrier to template the molecular assembly, and MSH is the sulfur donor for lincomycin maturation after thiol exchange. These thiols function through two unusual S-glycosylations that program lincosamide transfer, activation and modification, providing the first paradigm for EGT-associated biochemical processes and for the poorly understood MSH-dependent biotransformations, a newly described model that is potentially common in the incorporation of sulfur, an element essential for life and ubiquitous in living systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhao, Qunfei -- Wang, Min -- Xu, Dongxiao -- Zhang, Qinglin -- Liu, Wen -- England -- Nature. 2015 Feb 5;518(7537):115-9. doi: 10.1038/nature14137. Epub 2015 Jan 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China. ; Huzhou Center of Bio-Synthetic Innovation, 1366 Hongfeng Road, Huzhou 313000, China. ; 1] State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China [2] Huzhou Center of Bio-Synthetic Innovation, 1366 Hongfeng Road, Huzhou 313000, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25607359" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Bacterial Agents/*biosynthesis ; Biological Products/metabolism ; Biosynthetic Pathways/genetics ; Biotransformation ; Cysteine/chemistry/*metabolism ; Ergothioneine/chemistry/*metabolism ; Glycopeptides/chemistry/*metabolism ; Glycosylation ; Inositol/chemistry/*metabolism ; Lincomycin/*biosynthesis ; Lincosamides/metabolism ; Molecular Sequence Data ; Streptomyces/genetics/*metabolism
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  • 41
    Publication Date: 2015-11-19
    Description: Taste is responsible for evaluating the nutritious content of food, guiding essential appetitive behaviours, preventing the ingestion of toxic substances, and helping to ensure the maintenance of a healthy diet. Sweet and bitter are two of the most salient sensory percepts for humans and other animals; sweet taste allows the identification of energy-rich nutrients whereas bitter warns against the intake of potentially noxious chemicals. In mammals, information from taste receptor cells in the tongue is transmitted through multiple neural stations to the primary gustatory cortex in the brain. Recent imaging studies have shown that sweet and bitter are represented in the primary gustatory cortex by neurons organized in a spatial map, with each taste quality encoded by distinct cortical fields. Here we demonstrate that by manipulating the brain fields representing sweet and bitter taste we directly control an animal's internal representation, sensory perception, and behavioural actions. These results substantiate the segregation of taste qualities in the cortex, expose the innate nature of appetitive and aversive taste responses, and illustrate the ability of gustatory cortex to recapitulate complex behaviours in the absence of sensory input.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4712381/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4712381/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peng, Yueqing -- Gillis-Smith, Sarah -- Jin, Hao -- Trankner, Dimitri -- Ryba, Nicholas J P -- Zuker, Charles S -- DA035025/DA/NIDA NIH HHS/ -- R01 DA035025/DA/NIDA NIH HHS/ -- Howard Hughes Medical Institute/ -- Intramural NIH HHS/ -- England -- Nature. 2015 Nov 26;527(7579):512-5. doi: 10.1038/nature15763. Epub 2015 Nov 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Columbia College of Physicians and Surgeons, Columbia University, New York, New York 10032, USA. ; Departments of Biochemistry and Molecular Biophysics, Columbia College of Physicians and Surgeons, Columbia University, New York, New York 10032, USA. ; Department of Neuroscience, Columbia College of Physicians and Surgeons, Columbia University, New York, New York 10032, USA. ; HHMI/Janelia Farm Research Campus, 19700 Helix Drive, Ashburn, Virginia 20147, USA. ; National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26580015" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Appetitive Behavior/*physiology/radiation effects ; Avoidance Learning/*physiology/radiation effects ; Brain Mapping ; Cerebral Cortex/*cytology/*physiology/radiation effects ; Discrimination (Psychology)/physiology ; Male ; Mice ; Mice, Inbred C57BL ; Optogenetics ; Stereotaxic Techniques ; Taste/*physiology ; Taste Perception/*physiology/radiation effects ; Wakefulness/*physiology
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  • 42
    Publication Date: 2015-05-21
    Description: The lymphatic vasculature is a blind-ended network crucial for tissue-fluid homeostasis, immune surveillance and lipid absorption from the gut. Recent evidence has proposed an entirely venous-derived mammalian lymphatic system. By contrast, here we show that cardiac lymphatic vessels in mice have a heterogeneous cellular origin, whereby formation of at least part of the cardiac lymphatic network is independent of sprouting from veins. Multiple Cre-lox-based lineage tracing revealed a potential contribution from the putative haemogenic endothelium during development, and discrete lymphatic endothelial progenitor populations were confirmed by conditional knockout of Prox1 in Tie2+ and Vav1+ compartments. In the adult heart, myocardial infarction promoted a significant lymphangiogenic response, which was augmented by treatment with VEGF-C, resulting in improved cardiac function. These data prompt the re-evaluation of a century-long debate on the origin of lymphatic vessels and suggest that lymphangiogenesis may represent a therapeutic target to promote cardiac repair following injury.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4458138/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4458138/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klotz, Linda -- Norman, Sophie -- Vieira, Joaquim Miguel -- Masters, Megan -- Rohling, Mala -- Dube, Karina N -- Bollini, Sveva -- Matsuzaki, Fumio -- Carr, Carolyn A -- Riley, Paul R -- CH/11/1/28798/British Heart Foundation/United Kingdom -- PG/13/34/30216/British Heart Foundation/United Kingdom -- RG/08/003/25264/British Heart Foundation/United Kingdom -- RM/13/3/30159/British Heart Foundation/United Kingdom -- British Heart Foundation/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2015 Jun 4;522(7554):62-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25992544" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Lineage ; Endothelial Cells/cytology/metabolism ; Female ; Heart/physiology/physiopathology ; Homeodomain Proteins/metabolism ; *Lymphangiogenesis ; Lymphatic Vessels/*cytology/*injuries/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Myocardial Infarction/metabolism/physiopathology ; Myocardium/*cytology/metabolism ; Proto-Oncogene Proteins c-vav/metabolism ; Receptor, Macrophage Colony-Stimulating Factor/metabolism ; Receptor, Platelet-Derived Growth Factor beta/metabolism ; Receptor, TIE-2/metabolism ; Spatio-Temporal Analysis ; Tumor Suppressor Proteins/deficiency/metabolism ; Vascular Endothelial Growth Factor C/metabolism ; Veins/cytology ; Yolk Sac/cytology
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  • 43
    Publication Date: 2015-02-25
    Description: Hypothalamic pro-opiomelanocortin (POMC) neurons promote satiety. Cannabinoid receptor 1 (CB1R) is critical for the central regulation of food intake. Here we test whether CB1R-controlled feeding in sated mice is paralleled by decreased activity of POMC neurons. We show that chemical promotion of CB1R activity increases feeding, and notably, CB1R activation also promotes neuronal activity of POMC cells. This paradoxical increase in POMC activity was crucial for CB1R-induced feeding, because designer-receptors-exclusively-activated-by-designer-drugs (DREADD)-mediated inhibition of POMC neurons diminishes, whereas DREADD-mediated activation of POMC neurons enhances CB1R-driven feeding. The Pomc gene encodes both the anorexigenic peptide alpha-melanocyte-stimulating hormone, and the opioid peptide beta-endorphin. CB1R activation selectively increases beta-endorphin but not alpha-melanocyte-stimulating hormone release in the hypothalamus, and systemic or hypothalamic administration of the opioid receptor antagonist naloxone blocks acute CB1R-induced feeding. These processes involve mitochondrial adaptations that, when blocked, abolish CB1R-induced cellular responses and feeding. Together, these results uncover a previously unsuspected role of POMC neurons in the promotion of feeding by cannabinoids.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4496586/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4496586/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koch, Marco -- Varela, Luis -- Kim, Jae Geun -- Kim, Jung Dae -- Hernandez-Nuno, Francisco -- Simonds, Stephanie E -- Castorena, Carlos M -- Vianna, Claudia R -- Elmquist, Joel K -- Morozov, Yury M -- Rakic, Pasko -- Bechmann, Ingo -- Cowley, Michael A -- Szigeti-Buck, Klara -- Dietrich, Marcelo O -- Gao, Xiao-Bing -- Diano, Sabrina -- Horvath, Tamas L -- DP1 DK098058/DK/NIDDK NIH HHS/ -- DP1DK098058/DK/NIDDK NIH HHS/ -- P01 NS062686/NS/NINDS NIH HHS/ -- R01 AG040236/AG/NIA NIH HHS/ -- R01 DA023999/DA/NIDA NIH HHS/ -- R01AG040236/AG/NIA NIH HHS/ -- R01DK097566/DK/NIDDK NIH HHS/ -- R37 DK053301/DK/NIDDK NIH HHS/ -- England -- Nature. 2015 Mar 5;519(7541):45-50. doi: 10.1038/nature14260. Epub 2015 Feb 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Program in Integrative Cell Signaling and Neurobiology of Metabolism, Section of Comparative Medicine, Yale University School of Medicine, New Haven, Connecticut 06520, USA [2] Institute of Anatomy, University of Leipzig, 04103 Leipzig, Germany. ; Program in Integrative Cell Signaling and Neurobiology of Metabolism, Section of Comparative Medicine, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; 1] Program in Integrative Cell Signaling and Neurobiology of Metabolism, Section of Comparative Medicine, Yale University School of Medicine, New Haven, Connecticut 06520, USA [2] Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Obesity &Diabetes Institute, Department of Physiology, Monash University, Clayton, Victoria 3800, Australia. ; Division of Endocrinology &Metabolism, Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Department of Neurobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; 1] Department of Neurobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA [2] Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Institute of Anatomy, University of Leipzig, 04103 Leipzig, Germany. ; 1] Program in Integrative Cell Signaling and Neurobiology of Metabolism, Section of Comparative Medicine, Yale University School of Medicine, New Haven, Connecticut 06520, USA [2] Department of Neurobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; 1] Program in Integrative Cell Signaling and Neurobiology of Metabolism, Section of Comparative Medicine, Yale University School of Medicine, New Haven, Connecticut 06520, USA [2] Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, Connecticut 06520, USA [3] Department of Neurobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; 1] Program in Integrative Cell Signaling and Neurobiology of Metabolism, Section of Comparative Medicine, Yale University School of Medicine, New Haven, Connecticut 06520, USA [2] Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, Connecticut 06520, USA [3] Department of Neurobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA [4] Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, Connecticut 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25707796" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cannabinoids/*pharmacology ; Eating/*drug effects/*physiology ; Energy Metabolism/drug effects ; Hypothalamus/*cytology/drug effects/physiology ; Ion Channels/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mitochondria/drug effects/metabolism ; Mitochondrial Proteins/metabolism ; Naloxone/pharmacology ; Neurons/*drug effects/*metabolism ; Pro-Opiomelanocortin/*metabolism ; Receptor, Cannabinoid, CB1/agonists/metabolism ; Satiety Response/drug effects/physiology ; alpha-MSH/secretion ; beta-Endorphin/metabolism
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  • 44
    Publication Date: 2015-08-11
    Description: The sudden appearance of the neural crest and neurogenic placodes in early branching vertebrates has puzzled biologists for over a century. These embryonic tissues contribute to the development of the cranium and associated sensory organs, which were crucial for the evolution of the vertebrate "new head". A previous study suggests that rudimentary neural crest cells existed in ancestral chordates. However, the evolutionary origins of neurogenic placodes have remained obscure owing to a paucity of embryonic data from tunicates, the closest living relatives to those early vertebrates. Here we show that the tunicate Ciona intestinalis exhibits a proto-placodal ectoderm (PPE) that requires inhibition of bone morphogenetic protein (BMP) and expresses the key regulatory determinant Six1/2 and its co-factor Eya, a developmental process conserved across vertebrates. The Ciona PPE is shown to produce ciliated neurons that express genes for gonadotropin-releasing hormone (GnRH), a G-protein-coupled receptor for relaxin-3 (RXFP3) and a functional cyclic nucleotide-gated channel (CNGA), which suggests dual chemosensory and neurosecretory activities. These observations provide evidence that Ciona has a neurogenic proto-placode, which forms neurons that appear to be related to those derived from the olfactory placode and hypothalamic neurons of vertebrates. We discuss the possibility that the PPE-derived GnRH neurons of Ciona resemble an ancestral cell type, a progenitor to the complex neuronal circuit that integrates sensory information and neuroendocrine functions in vertebrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abitua, Philip Barron -- Gainous, T Blair -- Kaczmarczyk, Angela N -- Winchell, Christopher J -- Hudson, Clare -- Kamata, Kaori -- Nakagawa, Masashi -- Tsuda, Motoyuki -- Kusakabe, Takehiro G -- Levine, Michael -- NS076542/NS/NINDS NIH HHS/ -- England -- Nature. 2015 Aug 27;524(7566):462-5. doi: 10.1038/nature14657. Epub 2015 Aug 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Integrative Genomics, Division of Genetics, Genomics and Development, Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, USA. ; Sorbonne Universites, Universite Pierre et Marie Curie, Centre National de la Recherche Scientifique, Laboratoire de Biologie du Developpement de Villefranche-sur-mer, Observatoire Oceanologique, 06230 Villefranche-sur-mer, France. ; Graduate School of Life Science, University of Hyogo, Kamigori, Hyogo 678-1297, Japan. ; Institute for Integrative Neurobiology and Department of Biology, Faculty of Science and Engineering, Konan University, Kobe 658-8501, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26258298" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Patterning ; Bone Morphogenetic Proteins ; Ciona intestinalis/*cytology/*embryology/genetics/metabolism ; Ectoderm/metabolism ; Gonadotropin-Releasing Hormone/metabolism ; HEK293 Cells ; Homeodomain Proteins/metabolism ; Humans ; Intracellular Signaling Peptides and Proteins/metabolism ; Larva/cytology/metabolism ; Molecular Sequence Data ; Neurons/*cytology/metabolism ; Protein Tyrosine Phosphatases/metabolism ; Receptors, G-Protein-Coupled/metabolism ; Vertebrates/*anatomy & histology/*embryology/physiology
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  • 45
    Publication Date: 2015-09-30
    Description: Haematopoietic stem cells (HSCs) reside in a perivascular niche but the specific location of this niche remains controversial. HSCs are rare and few can be found in thin tissue sections or upon live imaging, making it difficult to comprehensively localize dividing and non-dividing HSCs. Here, using a green fluorescent protein (GFP) knock-in for the gene Ctnnal1 in mice (hereafter denoted as alpha-catulin(GFP)), we discover that alpha-catulin(GFP) is expressed by only 0.02% of bone marrow haematopoietic cells, including almost all HSCs. We find that approximately 30% of alpha-catulin-GFP(+)c-kit(+) cells give long-term multilineage reconstitution of irradiated mice, indicating that alpha-catulin-GFP(+)c-kit(+) cells are comparable in HSC purity to cells obtained using the best markers currently available. We optically cleared the bone marrow to perform deep confocal imaging, allowing us to image thousands of alpha-catulin-GFP(+)c-kit(+) cells and to digitally reconstruct large segments of bone marrow. The distribution of alpha-catulin-GFP(+)c-kit(+) cells indicated that HSCs were more common in central marrow than near bone surfaces, and in the diaphysis relative to the metaphysis. Nearly all HSCs contacted leptin receptor positive (Lepr(+)) and Cxcl12(high) niche cells, and approximately 85% of HSCs were within 10 mum of a sinusoidal blood vessel. Most HSCs, both dividing (Ki-67(+)) and non-dividing (Ki-67(-)), were distant from arterioles, transition zone vessels, and bone surfaces. Dividing and non-dividing HSCs thus reside mainly in perisinusoidal niches with Lepr(+)Cxcl12(high) cells throughout the bone marrow.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Acar, Melih -- Kocherlakota, Kiranmai S -- Murphy, Malea M -- Peyer, James G -- Oguro, Hideyuki -- Inra, Christopher N -- Jaiyeola, Christabel -- Zhao, Zhiyu -- Luby-Phelps, Katherine -- Morrison, Sean J -- HL097760/HL/NHLBI NIH HHS/ -- R01 DK100848/DK/NIDDK NIH HHS/ -- S10 RR029731/RR/NCRR NIH HHS/ -- S10RR029731/RR/NCRR NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Oct 1;526(7571):126-30. doi: 10.1038/nature15250. Epub 2015 Sep 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Children's Research Institute and the Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26416744" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arterioles/metabolism ; Biomarkers/analysis/metabolism ; Bone Marrow/*anatomy & histology ; Cell Division ; Cell Lineage ; Chemokine CXCL12/metabolism ; Diaphyses/cytology/metabolism ; Female ; Hematopoietic Stem Cells/cytology/*metabolism ; Image Processing, Computer-Assisted ; Male ; Mice ; Mice, Inbred C57BL ; Microscopy, Confocal ; *Molecular Imaging ; Proto-Oncogene Proteins c-kit/metabolism ; Receptors, Leptin/metabolism ; Stem Cell Niche ; Tibia/anatomy & histology/blood supply/cytology ; alpha Catenin/analysis/metabolism
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  • 46
    Publication Date: 2015-11-05
    Description: Anxiety-related conditions are among the most difficult neuropsychiatric diseases to treat pharmacologically, but respond to cognitive therapies. There has therefore been interest in identifying relevant top-down pathways from cognitive control regions in medial prefrontal cortex (mPFC). Identification of such pathways could contribute to our understanding of the cognitive regulation of affect, and provide pathways for intervention. Previous studies have suggested that dorsal and ventral mPFC subregions exert opposing effects on fear, as do subregions of other structures. However, precise causal targets for top-down connections among these diverse possibilities have not been established. Here we show that the basomedial amygdala (BMA) represents the major target of ventral mPFC in amygdala in mice. Moreover, BMA neurons differentiate safe and aversive environments, and BMA activation decreases fear-related freezing and high-anxiety states. Lastly, we show that the ventral mPFC-BMA projection implements top-down control of anxiety state and learned freezing, both at baseline and in stress-induced anxiety, defining a broadly relevant new top-down behavioural regulation pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adhikari, Avishek -- Lerner, Talia N -- Finkelstein, Joel -- Pak, Sally -- Jennings, Joshua H -- Davidson, Thomas J -- Ferenczi, Emily -- Gunaydin, Lisa A -- Mirzabekov, Julie J -- Ye, Li -- Kim, Sung-Yon -- Lei, Anna -- Deisseroth, Karl -- 1F32MH105053-01/MH/NIMH NIH HHS/ -- K99 MH106649/MH/NIMH NIH HHS/ -- K99MH106649/MH/NIMH NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Nov 12;527(7577):179-85. doi: 10.1038/nature15698. Epub 2015 Nov 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bioengineering, Stanford University, Stanford, California 94305, USA. ; CNC Program, Stanford University, Stanford, California 94304, USA. ; Neurosciences Program, Stanford University, Stanford, California 94305, USA. ; Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California 94305, USA. ; Howard Hughes Medical Institute, Stanford University, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26536109" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/cytology/*physiology ; Animals ; Anxiety/*physiopathology/psychology ; Extinction, Psychological/physiology ; Fear/*physiology/psychology ; Female ; Freezing Reaction, Cataleptic/physiology ; Learning/physiology ; Male ; Mice ; Mice, Inbred C57BL ; Neural Pathways/*physiology ; Prefrontal Cortex/cytology/physiology ; Stress, Psychological/physiopathology
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  • 47
    Publication Date: 2015-11-27
    Description: Nitrification, the oxidation of ammonia via nitrite to nitrate, has always been considered to be a two-step process catalysed by chemolithoautotrophic microorganisms oxidizing either ammonia or nitrite. No known nitrifier carries out both steps, although complete nitrification should be energetically advantageous. This functional separation has puzzled microbiologists for a century. Here we report on the discovery and cultivation of a completely nitrifying bacterium from the genus Nitrospira, a globally distributed group of nitrite oxidizers. The genome of this chemolithoautotrophic organism encodes the pathways both for ammonia and nitrite oxidation, which are concomitantly activated during growth by ammonia oxidation to nitrate. Genes affiliated with the phylogenetically distinct ammonia monooxygenase and hydroxylamine dehydrogenase genes of Nitrospira are present in many environments and were retrieved on Nitrospira-contigs in new metagenomes from engineered systems. These findings fundamentally change our picture of nitrification and point to completely nitrifying Nitrospira as key components of nitrogen-cycling microbial communities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daims, Holger -- Lebedeva, Elena V -- Pjevac, Petra -- Han, Ping -- Herbold, Craig -- Albertsen, Mads -- Jehmlich, Nico -- Palatinszky, Marton -- Vierheilig, Julia -- Bulaev, Alexandr -- Kirkegaard, Rasmus H -- von Bergen, Martin -- Rattei, Thomas -- Bendinger, Bernd -- Nielsen, Per H -- Wagner, Michael -- England -- Nature. 2015 Dec 24;528(7583):504-9. doi: 10.1038/nature16461. Epub 2015 Nov 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria. ; Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bld. 2, 119071 Moscow, Russia. ; Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark. ; Helmholtz-Centre for Environmental Research - UFZ, Department of Proteomics, Permoserstrasse 15, 04318 Leipzig, Germany. ; Helmholtz-Centre for Environmental Research - UFZ, Department of Metabolomics, Permoserstrasse 15, 04318 Leipzig, Germany. ; Department of Microbiology and Ecosystem Science, Division of Computational Systems Biology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria. ; DVGW-Forschungsstelle TUHH, Hamburg University of Technology, 21073 Hamburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26610024" target="_blank"〉PubMed〈/a〉
    Keywords: Ammonia/*metabolism ; Bacteria/enzymology/genetics/growth & development/*metabolism ; Evolution, Molecular ; Genome, Bacterial/genetics ; Molecular Sequence Data ; Nitrates/*metabolism ; *Nitrification/genetics ; Nitrites/*metabolism ; Oxidation-Reduction ; Oxidoreductases/genetics/metabolism ; Phylogeny
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  • 48
    Publication Date: 2015-03-25
    Description: The first step in the biogenesis of microRNAs is the processing of primary microRNAs (pri-miRNAs) by the microprocessor complex, composed of the RNA-binding protein DGCR8 and the type III RNase DROSHA. This initial event requires recognition of the junction between the stem and the flanking single-stranded RNA of the pri-miRNA hairpin by DGCR8 followed by recruitment of DROSHA, which cleaves the RNA duplex to yield the pre-miRNA product. While the mechanisms underlying pri-miRNA processing have been determined, the mechanism by which DGCR8 recognizes and binds pri-miRNAs, as opposed to other secondary structures present in transcripts, is not understood. Here we find in mammalian cells that methyltransferase-like 3 (METTL3) methylates pri-miRNAs, marking them for recognition and processing by DGCR8. Consistent with this, METTL3 depletion reduced the binding of DGCR8 to pri-miRNAs and resulted in the global reduction of mature miRNAs and concomitant accumulation of unprocessed pri-miRNAs. In vitro processing reactions confirmed the sufficiency of the N(6)-methyladenosine (m(6)A) mark in promoting pri-miRNA processing. Finally, gain-of-function experiments revealed that METTL3 is sufficient to enhance miRNA maturation in a global and non-cell-type-specific manner. Our findings reveal that the m(6)A mark acts as a key post-transcriptional modification that promotes the initiation of miRNA biogenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4475635/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4475635/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alarcon, Claudio R -- Lee, Hyeseung -- Goodarzi, Hani -- Halberg, Nils -- Tavazoie, Sohail F -- T32 CA009673/CA/NCI NIH HHS/ -- England -- Nature. 2015 Mar 26;519(7544):482-5. doi: 10.1038/nature14281. Epub 2015 Mar 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Systems Cancer Biology, Rockefeller University, 1230 York Avenue, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25799998" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/*analogs & derivatives/metabolism ; Base Sequence ; Cell Line ; Gene Expression Regulation ; Humans ; Methylation ; Methyltransferases/deficiency/metabolism ; MicroRNAs/*chemistry/*metabolism ; Molecular Sequence Data ; Nucleic Acid Conformation ; *RNA Processing, Post-Transcriptional ; RNA-Binding Proteins/metabolism ; Substrate Specificity
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  • 49
    Publication Date: 2015-02-25
    Description: Clustered regularly interspaced short palindromic repeat (CRISPR) loci and their associated (Cas) proteins provide adaptive immunity against viral infection in prokaryotes. Upon infection, short phage sequences known as spacers integrate between CRISPR repeats and are transcribed into small RNA molecules that guide the Cas9 nuclease to the viral targets (protospacers). Streptococcus pyogenes Cas9 cleavage of the viral genome requires the presence of a 5'-NGG-3' protospacer adjacent motif (PAM) sequence immediately downstream of the viral target. It is not known whether and how viral sequences flanked by the correct PAM are chosen as new spacers. Here we show that Cas9 selects functional spacers by recognizing their PAM during spacer acquisition. The replacement of cas9 with alleles that lack the PAM recognition motif or recognize an NGGNG PAM eliminated or changed PAM specificity during spacer acquisition, respectively. Cas9 associates with other proteins of the acquisition machinery (Cas1, Cas2 and Csn2), presumably to provide PAM-specificity to this process. These results establish a new function for Cas9 in the genesis of prokaryotic immunological memory.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4385744/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4385744/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heler, Robert -- Samai, Poulami -- Modell, Joshua W -- Weiner, Catherine -- Goldberg, Gregory W -- Bikard, David -- Marraffini, Luciano A -- 1DP2AI104556-01/AI/NIAID NIH HHS/ -- DP2 AI104556/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Mar 12;519(7542):199-202. doi: 10.1038/nature14245. Epub 2015 Feb 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Bacteriology, The Rockefeller University, 1230 York Avenue, New York, New York 10065, USA. ; 1] Laboratory of Bacteriology, The Rockefeller University, 1230 York Avenue, New York, New York 10065, USA [2] Synthetic Biology Group, Institut Pasteur, 28 Rue du Dr. Roux, 75015 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25707807" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; CRISPR-Associated Proteins/*metabolism ; *CRISPR-Cas Systems/immunology ; Clustered Regularly Interspaced Short Palindromic Repeats/*genetics/immunology ; DNA, Viral/*genetics/immunology/metabolism ; Molecular Sequence Data ; Nucleotide Motifs ; Protein Binding ; Protein Structure, Tertiary ; Staphylococcus aureus ; Streptococcus pyogenes/*enzymology/*genetics/immunology/virology ; Substrate Specificity
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  • 50
    Publication Date: 2015-10-23
    Description: The anaerobic oxidation of methane (AOM) with sulfate controls the emission of the greenhouse gas methane from the ocean floor. In marine sediments, AOM is performed by dual-species consortia of anaerobic methanotrophic archaea (ANME) and sulfate-reducing bacteria (SRB) inhabiting the methane-sulfate transition zone. The biochemical pathways and biological adaptations enabling this globally relevant process are not fully understood. Here we study the syntrophic interaction in thermophilic AOM (TAOM) between ANME-1 archaea and their consortium partner SRB HotSeep-1 (ref. 6) at 60 degrees C to test the hypothesis of a direct interspecies exchange of electrons. The activity of TAOM consortia was compared to the first ANME-free culture of an AOM partner bacterium that grows using hydrogen as the sole electron donor. The thermophilic ANME-1 do not produce sufficient hydrogen to sustain the observed growth of the HotSeep-1 partner. Enhancing the growth of the HotSeep-1 partner by hydrogen addition represses methane oxidation and the metabolic activity of ANME-1. Further supporting the hypothesis of direct electron transfer between the partners, we observe that under TAOM conditions, both ANME and the HotSeep-1 bacteria overexpress genes for extracellular cytochrome production and form cell-to-cell connections that resemble the nanowire structures responsible for interspecies electron transfer between syntrophic consortia of Geobacter. HotSeep-1 highly expresses genes for pili production only during consortial growth using methane, and the nanowire-like structures are absent in HotSeep-1 cells isolated with hydrogen. These observations suggest that direct electron transfer is a principal mechanism in TAOM, which may also explain the enigmatic functioning and specificity of other methanotrophic ANME-SRB consortia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wegener, Gunter -- Krukenberg, Viola -- Riedel, Dietmar -- Tegetmeyer, Halina E -- Boetius, Antje -- England -- Nature. 2015 Oct 22;526(7574):587-90. doi: 10.1038/nature15733.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Planck Institute for Marine Microbiology, 28359 Bremen, Germany. ; MARUM, Center for Marine Environmental Sciences, University Bremen, 28359 Bremen, Germany. ; Max Planck Institute for Biophysical Chemistry, 37077 Gottingen, Germany. ; Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, 27570 Bremerhaven, Germany. ; Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26490622" target="_blank"〉PubMed〈/a〉
    Keywords: Anaerobiosis ; Archaea/*metabolism ; Bacteria/*metabolism ; Cytochromes/metabolism ; Electron Transport ; Fimbriae, Bacterial/metabolism ; Geologic Sediments/microbiology ; Heme/metabolism ; Hydrogen/metabolism ; Hydrothermal Vents/microbiology ; Methane/*metabolism ; Microbiota/physiology ; Molecular Sequence Data ; Oceans and Seas ; Sulfates/metabolism ; Symbiosis ; Temperature
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  • 51
    Publication Date: 2015-05-07
    Description: The origin of the eukaryotic cell remains one of the most contentious puzzles in modern biology. Recent studies have provided support for the emergence of the eukaryotic host cell from within the archaeal domain of life, but the identity and nature of the putative archaeal ancestor remain a subject of debate. Here we describe the discovery of 'Lokiarchaeota', a novel candidate archaeal phylum, which forms a monophyletic group with eukaryotes in phylogenomic analyses, and whose genomes encode an expanded repertoire of eukaryotic signature proteins that are suggestive of sophisticated membrane remodelling capabilities. Our results provide strong support for hypotheses in which the eukaryotic host evolved from a bona fide archaeon, and demonstrate that many components that underpin eukaryote-specific features were already present in that ancestor. This provided the host with a rich genomic 'starter-kit' to support the increase in the cellular and genomic complexity that is characteristic of eukaryotes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4444528/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4444528/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spang, Anja -- Saw, Jimmy H -- Jorgensen, Steffen L -- Zaremba-Niedzwiedzka, Katarzyna -- Martijn, Joran -- Lind, Anders E -- van Eijk, Roel -- Schleper, Christa -- Guy, Lionel -- Ettema, Thijs J G -- 310039/European Research Council/International -- England -- Nature. 2015 May 14;521(7551):173-9. doi: 10.1038/nature14447. Epub 2015 May 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, SE-75123 Uppsala, Sweden. ; Department of Biology, Centre for Geobiology, University of Bergen, N-5020 Bergen, Norway. ; 1] Department of Biology, Centre for Geobiology, University of Bergen, N-5020 Bergen, Norway [2] Division of Archaea Biology and Ecogenomics, Department of Ecogenomics and Systems Biology, University of Vienna, A-1090 Vienna, Austria. ; 1] Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, SE-75123 Uppsala, Sweden [2] Department of Medical Biochemistry and Microbiology, Uppsala University, SE-75123 Uppsala, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25945739" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/metabolism ; Actins/genetics/metabolism ; Archaea/*classification/genetics/metabolism ; Arctic Regions ; Endosomal Sorting Complexes Required for Transport/genetics/metabolism ; Eukaryota/*classification/genetics/metabolism ; Eukaryotic Cells/classification/metabolism ; *Evolution, Molecular ; Hydrothermal Vents/*microbiology ; Metagenome/genetics ; Molecular Sequence Data ; Monomeric GTP-Binding Proteins/genetics/metabolism ; *Phylogeny ; Prokaryotic Cells/*classification ; Proteome/genetics/isolation & purification/metabolism
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  • 52
    Publication Date: 2015-06-19
    Description: Stress is considered a potent environmental risk factor for many behavioural abnormalities, including anxiety and mood disorders. Animal models can exhibit limited but quantifiable behavioural impairments resulting from chronic stress, including deficits in motivation, abnormal responses to behavioural challenges, and anhedonia. The hippocampus is thought to negatively regulate the stress response and to mediate various cognitive and mnemonic aspects of stress-induced impairments, although the neuronal underpinnings sufficient to support behavioural improvements are largely unknown. Here we acutely rescue stress-induced depression-related behaviours in mice by optogenetically reactivating dentate gyrus cells that were previously active during a positive experience. A brain-wide histological investigation, coupled with pharmacological and projection-specific optogenetic blockade experiments, identified glutamatergic activity in the hippocampus-amygdala-nucleus-accumbens pathway as a candidate circuit supporting the acute rescue. Finally, chronically reactivating hippocampal cells associated with a positive memory resulted in the rescue of stress-induced behavioural impairments and neurogenesis at time points beyond the light stimulation. Together, our data suggest that activating positive memories artificially is sufficient to suppress depression-like behaviours and point to dentate gyrus engram cells as potential therapeutic nodes for intervening with maladaptive behavioural states.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ramirez, Steve -- Liu, Xu -- MacDonald, Christopher J -- Moffa, Anthony -- Zhou, Joanne -- Redondo, Roger L -- Tonegawa, Susumu -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Jun 18;522(7556):335-9. doi: 10.1038/nature14514.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory, Department of Biology and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory, Department of Biology and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26085274" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/cytology/metabolism/physiology ; Animals ; Behavior, Animal ; Depression/*psychology/*therapy ; Female ; Hippocampus/cytology/physiology ; Male ; Memory/*physiology ; Mice ; Mice, Inbred C57BL ; Neural Pathways ; Nucleus Accumbens/cytology/metabolism/physiology ; Optogenetics ; Pleasure/*physiology ; Proto-Oncogene Proteins c-fos/metabolism ; Stress, Psychological/psychology ; Time Factors
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  • 53
    Publication Date: 2015-12-10
    Description: Inactivation of the TNFAIP3 gene, encoding the A20 protein, is associated with critical inflammatory diseases including multiple sclerosis, rheumatoid arthritis and Crohn's disease. However, the role of A20 in attenuating inflammatory signalling is unclear owing to paradoxical in vitro and in vivo findings. Here we utilize genetically engineered mice bearing mutations in the A20 ovarian tumour (OTU)-type deubiquitinase domain or in the zinc finger-4 (ZnF4) ubiquitin-binding motif to investigate these discrepancies. We find that phosphorylation of A20 promotes cleavage of Lys63-linked polyubiquitin chains by the OTU domain and enhances ZnF4-mediated substrate ubiquitination. Additionally, levels of linear ubiquitination dictate whether A20-deficient cells die in response to tumour necrosis factor. Mechanistically, linear ubiquitin chains preserve the architecture of the TNFR1 signalling complex by blocking A20-mediated disassembly of Lys63-linked polyubiquitin scaffolds. Collectively, our studies reveal molecular mechanisms whereby A20 deubiquitinase activity and ubiquitin binding, linear ubiquitination, and cellular kinases cooperate to regulate inflammation and cell death.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wertz, Ingrid E -- Newton, Kim -- Seshasayee, Dhaya -- Kusam, Saritha -- Lam, Cynthia -- Zhang, Juan -- Popovych, Nataliya -- Helgason, Elizabeth -- Schoeffler, Allyn -- Jeet, Surinder -- Ramamoorthi, Nandhini -- Kategaya, Lorna -- Newman, Robert J -- Horikawa, Keisuke -- Dugger, Debra -- Sandoval, Wendy -- Mukund, Susmith -- Zindal, Anuradha -- Martin, Flavius -- Quan, Clifford -- Tom, Jeffrey -- Fairbrother, Wayne J -- Townsend, Michael -- Warming, Soren -- DeVoss, Jason -- Liu, Jinfeng -- Dueber, Erin -- Caplazi, Patrick -- Lee, Wyne P -- Goodnow, Christopher C -- Balazs, Mercedesz -- Yu, Kebing -- Kolumam, Ganesh -- Dixit, Vishva M -- England -- Nature. 2015 Dec 17;528(7582):370-5. doi: 10.1038/nature16165. Epub 2015 Dec 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Discovery Oncology, Genentech, South San Francisco, California 94080, USA. ; Early Discovery Biochemistry, Genentech, South San Francisco, California 94080, USA. ; Physiological Chemistry, Genentech, South San Francisco, California 94080, USA. ; Immunology, Genentech, South San Francisco, California 94080, USA. ; Molecular Biology, Genentech, South San Francisco, California 94080, USA. ; Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory 2601, Australia. ; Protein Chemistry, Genentech, South San Francisco, California 94080, USA. ; Structural Biology, Genentech, South San Francisco, California 94080, USA. ; Bioinformatics, Genentech, South San Francisco, California 94080, USA. ; Pathology, Genentech, South San Francisco, California 94080, USA. ; Immunogenomics Laboratory, Immunology Division, Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, New South Wales 2010, Sydney, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26649818" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Death ; Cysteine Endopeptidases/chemistry/genetics/*metabolism ; Female ; Inflammation/genetics/*metabolism/pathology ; Intracellular Signaling Peptides and Proteins/chemistry/genetics/*metabolism ; Lysine/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mutation ; Phosphorylation ; Polyubiquitin/chemistry/metabolism ; Protein Binding ; Protein Kinases/metabolism ; Signal Transduction ; Tumor Necrosis Factor-alpha/metabolism ; Ubiquitin/*chemistry/*metabolism ; Ubiquitination
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  • 54
    Publication Date: 2015-11-03
    Description: Ever since Stephen Paget's 1889 hypothesis, metastatic organotropism has remained one of cancer's greatest mysteries. Here we demonstrate that exosomes from mouse and human lung-, liver- and brain-tropic tumour cells fuse preferentially with resident cells at their predicted destination, namely lung fibroblasts and epithelial cells, liver Kupffer cells and brain endothelial cells. We show that tumour-derived exosomes uptaken by organ-specific cells prepare the pre-metastatic niche. Treatment with exosomes from lung-tropic models redirected the metastasis of bone-tropic tumour cells. Exosome proteomics revealed distinct integrin expression patterns, in which the exosomal integrins alpha6beta4 and alpha6beta1 were associated with lung metastasis, while exosomal integrin alphavbeta5 was linked to liver metastasis. Targeting the integrins alpha6beta4 and alphavbeta5 decreased exosome uptake, as well as lung and liver metastasis, respectively. We demonstrate that exosome integrin uptake by resident cells activates Src phosphorylation and pro-inflammatory S100 gene expression. Finally, our clinical data indicate that exosomal integrins could be used to predict organ-specific metastasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoshino, Ayuko -- Costa-Silva, Bruno -- Shen, Tang-Long -- Rodrigues, Goncalo -- Hashimoto, Ayako -- Tesic Mark, Milica -- Molina, Henrik -- Kohsaka, Shinji -- Di Giannatale, Angela -- Ceder, Sophia -- Singh, Swarnima -- Williams, Caitlin -- Soplop, Nadine -- Uryu, Kunihiro -- Pharmer, Lindsay -- King, Tari -- Bojmar, Linda -- Davies, Alexander E -- Ararso, Yonathan -- Zhang, Tuo -- Zhang, Haiying -- Hernandez, Jonathan -- Weiss, Joshua M -- Dumont-Cole, Vanessa D -- Kramer, Kimberly -- Wexler, Leonard H -- Narendran, Aru -- Schwartz, Gary K -- Healey, John H -- Sandstrom, Per -- Labori, Knut Jorgen -- Kure, Elin H -- Grandgenett, Paul M -- Hollingsworth, Michael A -- de Sousa, Maria -- Kaur, Sukhwinder -- Jain, Maneesh -- Mallya, Kavita -- Batra, Surinder K -- Jarnagin, William R -- Brady, Mary S -- Fodstad, Oystein -- Muller, Volkmar -- Pantel, Klaus -- Minn, Andy J -- Bissell, Mina J -- Garcia, Benjamin A -- Kang, Yibin -- Rajasekhar, Vinagolu K -- Ghajar, Cyrus M -- Matei, Irina -- Peinado, Hector -- Bromberg, Jacqueline -- Lyden, David -- R01 CA169416/CA/NCI NIH HHS/ -- R01-CA169416/CA/NCI NIH HHS/ -- U01 CA169538/CA/NCI NIH HHS/ -- U01-CA169538/CA/NCI NIH HHS/ -- England -- Nature. 2015 Nov 19;527(7578):329-35. doi: 10.1038/nature15756. Epub 2015 Oct 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Children's Cancer and Blood Foundation Laboratories, Departments of Pediatrics, and Cell and Developmental Biology, Drukier Institute for Children's Health, Meyer Cancer Center, Weill Cornell Medicine, New York, New York 10021, USA. ; Department of Plant Pathology and Microbiology and Center for Biotechnology, National Taiwan University, Taipei 10617, Taiwan. ; Graduate Program in Areas of Basic and Applied Biology, Abel Salazar Biomedical Sciences Institute, University of Porto, 4099-003 Porto, Portugal. ; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan. ; Proteomics Resource Center, The Rockefeller University, New York, New York 10065, USA. ; Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Department of Oncology and Pathology, Karolinska Institutet, 17176 Stockholm, Sweden. ; Electron Microscopy Resource Center (EMRC), Rockefeller University, New York, New York 10065, USA. ; Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York, 10065, USA. ; Department of Surgery, County Council of Ostergotland, and Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linkoping University, 58185 Linkoping, Sweden. ; Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. ; Genomics Resources Core Facility, Weill Cornell Medicine, New York, New York 10021, USA. ; Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Division of Pediatric Oncology, Alberta Children's Hospital, Calgary, Alberta T3B 6A8, Canada. ; Division of Hematology/Oncology, Columbia University School of Medicine, New York, New York 10032, USA. ; Orthopaedic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Department of Hepato-Pancreato-Biliary Surgery, Oslo University Hospital, Nydalen, Oslo 0424, Norway. ; Department of Cancer Genetics, Institute for Cancer Research, Oslo University Hospital, Nydalen, Oslo 0424, Norway. ; Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA. ; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA. ; Gastric and Mixed Tumor Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Department of Tumor Biology, Norwegian Radium Hospital, Oslo University Hospital, Nydalen, Oslo 0424, Norway. ; Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Blindern, Oslo 0318, Norway. ; Department of Gynecology, University Medical Center, Martinistrasse 52, 20246 Hamburg, Germany. ; Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany. ; Department of Radiation Oncology, Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA. ; Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08903, USA. ; Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA. ; Microenvironment and Metastasis Laboratory, Department of Molecular Oncology, Spanish National Cancer Research Center (CNIO), Madrid 28029, Spain. ; Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Department of Medicine, Weill Cornell Medicine, New York, New York 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26524530" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomarkers/metabolism ; Brain/cytology/*metabolism ; Cell Line, Tumor ; Endothelial Cells/cytology/metabolism ; Epithelial Cells/cytology/metabolism ; Exosomes/*metabolism ; Female ; Fibroblasts/cytology/metabolism ; Genes, src ; Humans ; Integrin alpha6beta1/metabolism ; Integrin alpha6beta4/antagonists & inhibitors/metabolism ; Integrin beta Chains/metabolism ; Integrin beta4/metabolism ; Integrins/antagonists & inhibitors/*metabolism ; Kupffer Cells/cytology/metabolism ; Liver/cytology/*metabolism ; Lung/cytology/*metabolism ; Mice ; Mice, Inbred C57BL ; Neoplasm Metastasis/*pathology/*prevention & control ; Organ Specificity ; Phosphorylation ; Receptors, Vitronectin/antagonists & inhibitors/metabolism ; S100 Proteins/genetics ; *Tropism
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 55
    Publication Date: 2015-05-01
    Description: The ability to differentiate stimuli predicting positive or negative outcomes is critical for survival, and perturbations of emotional processing underlie many psychiatric disease states. Synaptic plasticity in the basolateral amygdala complex (BLA) mediates the acquisition of associative memories, both positive and negative. Different populations of BLA neurons may encode fearful or rewarding associations, but the identifying features of these populations and the synaptic mechanisms of differentiating positive and negative emotional valence have remained unknown. Here we show that BLA neurons projecting to the nucleus accumbens (NAc projectors) or the centromedial amygdala (CeM projectors) undergo opposing synaptic changes following fear or reward conditioning. We find that photostimulation of NAc projectors supports positive reinforcement while photostimulation of CeM projectors mediates negative reinforcement. Photoinhibition of CeM projectors impairs fear conditioning and enhances reward conditioning. We characterize these functionally distinct neuronal populations by comparing their electrophysiological, morphological and genetic features. Overall, we provide a mechanistic explanation for the representation of positive and negative associations within the amygdala.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4418228/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4418228/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Namburi, Praneeth -- Beyeler, Anna -- Yorozu, Suzuko -- Calhoon, Gwendolyn G -- Halbert, Sarah A -- Wichmann, Romy -- Holden, Stephanie S -- Mertens, Kim L -- Anahtar, Melodi -- Felix-Ortiz, Ada C -- Wickersham, Ian R -- Gray, Jesse M -- Tye, Kay M -- DP2 DK102256/DK/NIDDK NIH HHS/ -- DP2-DK-102256-01/DK/NIDDK NIH HHS/ -- R01 MH101528/MH/NIMH NIH HHS/ -- R01 MH102441/MH/NIMH NIH HHS/ -- R01-MH101528-01/MH/NIMH NIH HHS/ -- R01-MH102441-01/MH/NIMH NIH HHS/ -- U01 MH106018/MH/NIMH NIH HHS/ -- U01-MH106018/MH/NIMH NIH HHS/ -- U01-NS090473/NS/NINDS NIH HHS/ -- England -- Nature. 2015 Apr 30;520(7549):675-8. doi: 10.1038/nature14366.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Neuroscience Graduate Program, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, NRB 356, Boston, Massachusetts 02115, USA. ; 1] The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Undergraduate Program in Neuroscience, Wellesley College, Wellesley, Massachusetts 02481, USA. ; 1] The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Undergraduate Program in Neuroscience, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Master's Program in Biomedical Sciences, University of Amsterdam, Amsterdam 1098 XH, The Netherlands. ; McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25925480" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/*cytology/*physiology ; Animals ; Conditioning, Classical ; Fear/*physiology/psychology ; Gene Expression Profiling ; Long-Term Potentiation ; Male ; Mice ; Mice, Inbred C57BL ; Motivation ; *Neural Pathways ; Neurons/*physiology ; Nucleus Accumbens/cytology/physiology/radiation effects ; Reinforcement (Psychology) ; *Reward ; Transcription, Genetic
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  • 56
    Publication Date: 2015-12-18
    Description: T helper 17 (TH17) lymphocytes protect mucosal barriers from infections, but also contribute to multiple chronic inflammatory diseases. Their differentiation is controlled by RORgammat, a ligand-regulated nuclear receptor. Here we identify the RNA helicase DEAD-box protein 5 (DDX5) as a RORgammat partner that coordinates transcription of selective TH17 genes, and is required for TH17-mediated inflammatory pathologies. Surprisingly, the ability of DDX5 to interact with RORgammat and coactivate its targets depends on intrinsic RNA helicase activity and binding of a conserved nuclear long noncoding RNA (lncRNA), Rmrp, which is mutated in patients with cartilage-hair hypoplasia. A targeted Rmrp gene mutation in mice, corresponding to a gene mutation in cartilage-hair hypoplasia patients, altered lncRNA chromatin occupancy, and reduced the DDX5-RORgammat interaction and RORgammat target gene transcription. Elucidation of the link between Rmrp and the DDX5-RORgammat complex reveals a role for RNA helicases and lncRNAs in tissue-specific transcriptional regulation, and provides new opportunities for therapeutic intervention in TH17-dependent diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4762670/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4762670/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, Wendy -- Thomas, Benjamin -- Flynn, Ryan A -- Gavzy, Samuel J -- Wu, Lin -- Kim, Sangwon V -- Hall, Jason A -- Miraldi, Emily R -- Ng, Charles P -- Rigo, Frank W -- Meadows, Sarah -- Montoya, Nina R -- Herrera, Natalia G -- Domingos, Ana I -- Rastinejad, Fraydoon -- Myers, Richard M -- Fuller-Pace, Frances V -- Bonneau, Richard -- Chang, Howard Y -- Acuto, Oreste -- Littman, Dan R -- 1F30CA189514-01/CA/NCI NIH HHS/ -- F30 CA189514/CA/NCI NIH HHS/ -- P50 HG007735/HG/NHGRI NIH HHS/ -- P50-HG007735/HG/NHGRI NIH HHS/ -- R01 AI080885/AI/NIAID NIH HHS/ -- R01 AI121436/AI/NIAID NIH HHS/ -- R01 DK103358/DK/NIDDK NIH HHS/ -- R01 HG004361/HG/NHGRI NIH HHS/ -- R01AI080885/AI/NIAID NIH HHS/ -- R01DK103358/DK/NIDDK NIH HHS/ -- R01HG004361/HG/NHGRI NIH HHS/ -- T32 AI100853/AI/NIAID NIH HHS/ -- T32 CA009161/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Dec 24;528(7583):517-22. doi: 10.1038/nature16193. Epub 2015 Dec 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, New York 10016, USA. ; Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, UK. ; Center for Personal Dynamic Regulomes, Stanford University, Stanford, California 94305, USA. ; Center for Genomics and Systems Biology, Department of Biology, New York University, New York, New York 10003, USA. ; Courant Institute of Mathematical Sciences, Computer Science Department, New York University, New York, New York 10012, USA. ; Simons Center for Data Analysis, Simons Foundation, New York, New York 10010, USA. ; Isis Pharmaceuticals, Carlsbad, California 92010, USA. ; HudsonAlpha Institute for Biotechnology, Huntsville, Alabama 35806, USA. ; Instituto Gulbenkian de Ciencia, Oeiras 2780-156, Portugal. ; Integrative Metabolism Program, Sanford Burnham Prebys Medical Discovery Institute, Orlando, Florida 32827, USA. ; Division of Cancer Research, University of Dundee, Dundee DD1 9SY, UK. ; Howard Hughes Medical Institute, New York University School of Medicine, New York, New York 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26675721" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromatin/genetics/metabolism ; DEAD-box RNA Helicases/genetics/*metabolism ; Female ; Gene Expression Regulation/genetics ; Hair/abnormalities ; Hirschsprung Disease/genetics ; Humans ; Immunologic Deficiency Syndromes/genetics ; Inflammation/immunology/pathology ; Male ; Mice ; Mice, Inbred C57BL ; Mutation/genetics ; Nuclear Receptor Subfamily 1, Group F, Member 3/metabolism ; Organ Specificity ; Osteochondrodysplasias/congenital/genetics ; Protein Binding ; RNA, Long Noncoding/genetics/*metabolism ; Th17 Cells/*immunology/*metabolism ; Transcription, Genetic/genetics
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  • 57
    Publication Date: 2015-03-13
    Description: After stimulation, dendritic cells (DCs) mature and migrate to draining lymph nodes to induce immune responses. As such, autologous DCs generated ex vivo have been pulsed with tumour antigens and injected back into patients as immunotherapy. While DC vaccines have shown limited promise in the treatment of patients with advanced cancers including glioblastoma, the factors dictating DC vaccine efficacy remain poorly understood. Here we show that pre-conditioning the vaccine site with a potent recall antigen such as tetanus/diphtheria (Td) toxoid can significantly improve the lymph node homing and efficacy of tumour-antigen-specific DCs. To assess the effect of vaccine site pre-conditioning in humans, we randomized patients with glioblastoma to pre-conditioning with either mature DCs or Td unilaterally before bilateral vaccination with DCs pulsed with Cytomegalovirus phosphoprotein 65 (pp65) RNA. We and other laboratories have shown that pp65 is expressed in more than 90% of glioblastoma specimens but not in surrounding normal brain, providing an unparalleled opportunity to subvert this viral protein as a tumour-specific target. Patients given Td had enhanced DC migration bilaterally and significantly improved survival. In mice, Td pre-conditioning also enhanced bilateral DC migration and suppressed tumour growth in a manner dependent on the chemokine CCL3. Our clinical studies and corroborating investigations in mice suggest that pre-conditioning with a potent recall antigen may represent a viable strategy to improve anti-tumour immunotherapy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4510871/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4510871/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mitchell, Duane A -- Batich, Kristen A -- Gunn, Michael D -- Huang, Min-Nung -- Sanchez-Perez, Luis -- Nair, Smita K -- Congdon, Kendra L -- Reap, Elizabeth A -- Archer, Gary E -- Desjardins, Annick -- Friedman, Allan H -- Friedman, Henry S -- Herndon, James E 2nd -- Coan, April -- McLendon, Roger E -- Reardon, David A -- Vredenburgh, James J -- Bigner, Darell D -- Sampson, John H -- 1UL2 RR024128-01/RR/NCRR NIH HHS/ -- P01 CA154291/CA/NCI NIH HHS/ -- P01-CA154291-01A1/CA/NCI NIH HHS/ -- P50 CA108786/CA/NCI NIH HHS/ -- P50 NS020023/NS/NINDS NIH HHS/ -- P50-CA108786/CA/NCI NIH HHS/ -- P50-NS20023/NS/NINDS NIH HHS/ -- R01 CA134844/CA/NCI NIH HHS/ -- R01 CA177476/CA/NCI NIH HHS/ -- R01 NS067037/NS/NINDS NIH HHS/ -- R01-CA134844/CA/NCI NIH HHS/ -- R01-CA177476-01/CA/NCI NIH HHS/ -- R01-NS067037/NS/NINDS NIH HHS/ -- T32 AI052077/AI/NIAID NIH HHS/ -- T32 GM007171/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Mar 19;519(7543):366-9. doi: 10.1038/nature14320. Epub 2015 Mar 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA [3] Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Department of Immunology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; Department of Immunology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA. ; Division of Surgical Sciences, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA. ; Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA [3] Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA [4] Department of Immunology, Duke University Medical Center, Durham, North Carolina 27710, USA [5] Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25762141" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Neoplasm/immunology ; CD4-Positive T-Lymphocytes/drug effects/immunology ; Cancer Vaccines/administration & dosage/*immunology/therapeutic use ; Cell Movement/drug effects ; Chemokine CCL3/*immunology ; Dendritic Cells/cytology/*drug effects/immunology ; Female ; Glioblastoma/drug therapy/*immunology/pathology/*therapy ; Humans ; Immunotherapy/methods ; Lymph Nodes/cytology/drug effects/immunology ; Mice ; Mice, Inbred C57BL ; Phosphoproteins/chemistry/genetics/immunology ; Substrate Specificity ; Survival Rate ; Tetanus Toxoid/*administration & dosage/*pharmacology/therapeutic use ; Treatment Outcome ; Viral Matrix Proteins/chemistry/genetics/immunology
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  • 58
    Publication Date: 2015-03-25
    Description: Cyclic guanosine monophosphate (cGMP) is a second messenger molecule that transduces nitric-oxide- and natriuretic-peptide-coupled signalling, stimulating phosphorylation changes by protein kinase G. Enhancing cGMP synthesis or blocking its degradation by phosphodiesterase type 5A (PDE5A) protects against cardiovascular disease. However, cGMP stimulation alone is limited by counter-adaptions including PDE upregulation. Furthermore, although PDE5A regulates nitric-oxide-generated cGMP, nitric oxide signalling is often depressed by heart disease. PDEs controlling natriuretic-peptide-coupled cGMP remain uncertain. Here we show that cGMP-selective PDE9A (refs 7, 8) is expressed in the mammalian heart, including humans, and is upregulated by hypertrophy and cardiac failure. PDE9A regulates natriuretic-peptide- rather than nitric-oxide-stimulated cGMP in heart myocytes and muscle, and its genetic or selective pharmacological inhibition protects against pathological responses to neurohormones, and sustained pressure-overload stress. PDE9A inhibition reverses pre-established heart disease independent of nitric oxide synthase (NOS) activity, whereas PDE5A inhibition requires active NOS. Transcription factor activation and phosphoproteome analyses of myocytes with each PDE selectively inhibited reveals substantial differential targeting, with phosphorylation changes from PDE5A inhibition being more sensitive to NOS activation. Thus, unlike PDE5A, PDE9A can regulate cGMP signalling independent of the nitric oxide pathway, and its role in stress-induced heart disease suggests potential as a therapeutic target.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376609/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376609/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Dong I -- Zhu, Guangshuo -- Sasaki, Takashi -- Cho, Gun-Sik -- Hamdani, Nazha -- Holewinski, Ronald -- Jo, Su-Hyun -- Danner, Thomas -- Zhang, Manling -- Rainer, Peter P -- Bedja, Djahida -- Kirk, Jonathan A -- Ranek, Mark J -- Dostmann, Wolfgang R -- Kwon, Chulan -- Margulies, Kenneth B -- Van Eyk, Jennifer E -- Paulus, Walter J -- Takimoto, Eiki -- Kass, David A -- HHSN268201000032C/HL/NHLBI NIH HHS/ -- HL-07227/HL/NHLBI NIH HHS/ -- HL-089297/HL/NHLBI NIH HHS/ -- HL-093432/HL/NHLBI NIH HHS/ -- HL-119012/HL/NHLBI NIH HHS/ -- HL089847/HL/NHLBI NIH HHS/ -- HL105993/HL/NHLBI NIH HHS/ -- HL68891/HL/NHLBI NIH HHS/ -- N01HV28180/HL/NHLBI NIH HHS/ -- P01 HL107153/HL/NHLBI NIH HHS/ -- R01 HL089297/HL/NHLBI NIH HHS/ -- R01 HL089847/HL/NHLBI NIH HHS/ -- R01 HL093432/HL/NHLBI NIH HHS/ -- R01 HL105993/HL/NHLBI NIH HHS/ -- R01 HL111198/HL/NHLBI NIH HHS/ -- R01 HL119012/HL/NHLBI NIH HHS/ -- T32 HL007227/HL/NHLBI NIH HHS/ -- England -- Nature. 2015 Mar 26;519(7544):472-6. doi: 10.1038/nature14332. Epub 2015 Mar 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21205, USA. ; Advanced Medical Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa 227-0033, Japan. ; Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center, Van der Boechorststraat 7, 1081 BT Amsterdam, The Netherlands. ; 1] Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21205, USA [2] Heart Institute and Advanced Clinical Biosystems Research Institute, Cedar Sinai Medical Center, 8700 Beverly Blvd, AHSP A9229 Los Angeles, California 90048, USA. ; Department of Physiology, Institute of Bioscience and Biotechnology, BK21 plus Graduate Program, Kangwon National University College of Medicine, Chuncheon 200-701, Korea. ; Department of Pharmacology, University of Vermont, Burlington, Vermont 05405, USA. ; Department of Medicine, Division of Cardiovascular Medicine, Cardiovascular Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25799991" target="_blank"〉PubMed〈/a〉
    Keywords: 3',5'-Cyclic-AMP Phosphodiesterases/antagonists & ; inhibitors/deficiency/genetics/*metabolism ; Animals ; Aortic Valve Stenosis/complications ; Cardiomegaly/drug therapy/*enzymology/etiology/*metabolism ; Cyclic GMP/*metabolism ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Muscle Cells/enzymology ; Myocardium/enzymology ; Natriuretic Peptides/metabolism ; *Nitric Oxide/metabolism ; Nitric Oxide Synthase ; Phosphodiesterase Inhibitors/pharmacology/therapeutic use ; Pressure ; Signal Transduction/drug effects ; Stress, Physiological ; Up-Regulation
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  • 59
    Publication Date: 2015-07-23
    Description: Atmospheric methane is the second most important greenhouse gas after carbon dioxide, and is responsible for about 20% of the global warming effect since pre-industrial times. Rice paddies are the largest anthropogenic methane source and produce 7-17% of atmospheric methane. Warm waterlogged soil and exuded nutrients from rice roots provide ideal conditions for methanogenesis in paddies with annual methane emissions of 25-100-million tonnes. This scenario will be exacerbated by an expansion in rice cultivation needed to meet the escalating demand for food in the coming decades. There is an urgent need to establish sustainable technologies for increasing rice production while reducing methane fluxes from rice paddies. However, ongoing efforts for methane mitigation in rice paddies are mainly based on farming practices and measures that are difficult to implement. Despite proposed strategies to increase rice productivity and reduce methane emissions, no high-starch low-methane-emission rice has been developed. Here we show that the addition of a single transcription factor gene, barley SUSIBA2 (refs 7, 8), conferred a shift of carbon flux to SUSIBA2 rice, favouring the allocation of photosynthates to aboveground biomass over allocation to roots. The altered allocation resulted in an increased biomass and starch content in the seeds and stems, and suppressed methanogenesis, possibly through a reduction in root exudates. Three-year field trials in China demonstrated that the cultivation of SUSIBA2 rice was associated with a significant reduction in methane emissions and a decrease in rhizospheric methanogen levels. SUSIBA2 rice offers a sustainable means of providing increased starch content for food production while reducing greenhouse gas emissions from rice cultivation. Approaches to increase rice productivity and reduce methane emissions as seen in SUSIBA2 rice may be particularly beneficial in a future climate with rising temperatures resulting in increased methane emissions from paddies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Su, J -- Hu, C -- Yan, X -- Jin, Y -- Chen, Z -- Guan, Q -- Wang, Y -- Zhong, D -- Jansson, C -- Wang, F -- Schnurer, A -- Sun, C -- England -- Nature. 2015 Jul 30;523(7562):602-6. doi: 10.1038/nature14673. Epub 2015 Jul 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Institute of Biotechnology, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China [2] Department of Plant Biology, Uppsala BioCenter, Linnean Center for Plant Biology, Swedish University of Agricultural Sciences, PO Box 7080, SE-75007 Uppsala, Sweden. ; Department of Plant Biology, Uppsala BioCenter, Linnean Center for Plant Biology, Swedish University of Agricultural Sciences, PO Box 7080, SE-75007 Uppsala, Sweden. ; 1] Department of Plant Biology, Uppsala BioCenter, Linnean Center for Plant Biology, Swedish University of Agricultural Sciences, PO Box 7080, SE-75007 Uppsala, Sweden [2] Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, Hunan Agricultural University, Changsha 410128, China. ; Institute of Biotechnology, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China. ; The Environmental Molecular Sciences Laboratory (EMSL), Pacific Northwest National Laboratory, PO Box 999, K8-93 Richland, Washington 99352, USA. ; Department of Microbiology, Uppsala BioCenter, Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26200336" target="_blank"〉PubMed〈/a〉
    Keywords: Agriculture/methods/trends ; Atmosphere/chemistry ; Biomass ; Carbon Cycle ; China ; Conservation of Natural Resources/methods ; Food Supply/methods ; Genotype ; Global Warming/prevention & control ; Greenhouse Effect/*prevention & control ; Hordeum/*genetics ; Methane/biosynthesis/*metabolism ; Molecular Sequence Data ; Oryza/genetics/growth & development/*metabolism ; Phenotype ; Photosynthesis ; Plant Components, Aerial/metabolism ; Plant Proteins/genetics/*metabolism ; Plant Roots/metabolism ; Plants, Genetically Modified ; Rhizosphere ; Seeds/metabolism ; Starch/biosynthesis/*metabolism ; Transcription Factors/genetics/*metabolism
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 60
    Publication Date: 2015-04-10
    Description: Adiponectin stimulation of its receptors, AdipoR1 and AdipoR2, increases the activities of 5' AMP-activated protein kinase (AMPK) and peroxisome proliferator-activated receptor (PPAR), respectively, thereby contributing to healthy longevity as key anti-diabetic molecules. AdipoR1 and AdipoR2 were predicted to contain seven transmembrane helices with the opposite topology to G-protein-coupled receptors. Here we report the crystal structures of human AdipoR1 and AdipoR2 at 2.9 and 2.4 A resolution, respectively, which represent a novel class of receptor structure. The seven-transmembrane helices, conformationally distinct from those of G-protein-coupled receptors, enclose a large cavity where three conserved histidine residues coordinate a zinc ion. The zinc-binding structure may have a role in the adiponectin-stimulated AMPK phosphorylation and UCP2 upregulation. Adiponectin may broadly interact with the extracellular face, rather than the carboxy-terminal tail, of the receptors. The present information will facilitate the understanding of novel structure-function relationships and the development and optimization of AdipoR agonists for the treatment of obesity-related diseases, such as type 2 diabetes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4477036/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4477036/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tanabe, Hiroaki -- Fujii, Yoshifumi -- Okada-Iwabu, Miki -- Iwabu, Masato -- Nakamura, Yoshihiro -- Hosaka, Toshiaki -- Motoyama, Kanna -- Ikeda, Mariko -- Wakiyama, Motoaki -- Terada, Takaho -- Ohsawa, Noboru -- Hato, Masakatsu -- Ogasawara, Satoshi -- Hino, Tomoya -- Murata, Takeshi -- Iwata, So -- Hirata, Kunio -- Kawano, Yoshiaki -- Yamamoto, Masaki -- Kimura-Someya, Tomomi -- Shirouzu, Mikako -- Yamauchi, Toshimasa -- Kadowaki, Takashi -- Yokoyama, Shigeyuki -- 062164/Z/00/Z/Wellcome Trust/United Kingdom -- 089809/Wellcome Trust/United Kingdom -- BB/G02325/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/G023425/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- England -- Nature. 2015 Apr 16;520(7547):312-6. doi: 10.1038/nature14301. Epub 2015 Apr 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan [2] Department of Biophysics and Biochemistry and Laboratory of Structural Biology, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan [3] Division of Structural and Synthetic Biology, RIKEN Center for Life Science Technologies, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan [4] RIKEN Structural Biology Laboratory, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan. ; 1] RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan [2] RIKEN Structural Biology Laboratory, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan. ; 1] Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan [2] Department of Integrated Molecular Science on Metabolic Diseases, 22nd Century Medical and Research Center, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. ; 1] Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan [2] Department of Integrated Molecular Science on Metabolic Diseases, 22nd Century Medical and Research Center, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan [3] PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan. ; 1] RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan [2] Division of Structural and Synthetic Biology, RIKEN Center for Life Science Technologies, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan [3] RIKEN Structural Biology Laboratory, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan. ; 1] RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan [2] Division of Structural and Synthetic Biology, RIKEN Center for Life Science Technologies, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan. ; RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan. ; Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan. ; 1] Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan [2] JST, Research Acceleration Program, Membrane Protein Crystallography Project, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan. ; 1] RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan [2] Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan [3] JST, Research Acceleration Program, Membrane Protein Crystallography Project, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan [4] Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage, Chiba 263-8522, Japan. ; 1] RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan [2] Department of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan [3] JST, Research Acceleration Program, Membrane Protein Crystallography Project, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan [4] Division of Molecular Biosciences, Membrane Protein Crystallography Group, Imperial College, London SW7 2AZ, UK [5] Diamond Light Source, Harwell Science and Innovation Campus, Chilton, Didcot, Oxfordshire OX11 0DE, UK [6] RIKEN SPring-8 Center, Harima Institute, Kouto, Sayo, Hyogo 679-5148, Japan. ; RIKEN SPring-8 Center, Harima Institute, Kouto, Sayo, Hyogo 679-5148, Japan. ; 1] Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan [2] Department of Integrated Molecular Science on Metabolic Diseases, 22nd Century Medical and Research Center, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan [3] CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan. ; 1] RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan [2] Department of Biophysics and Biochemistry and Laboratory of Structural Biology, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan [3] RIKEN Structural Biology Laboratory, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25855295" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Crystallography, X-Ray ; Histidine/chemistry/metabolism ; Humans ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Receptors, Adiponectin/*chemistry/metabolism ; Structure-Activity Relationship ; Zinc/metabolism
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  • 61
    Publication Date: 2015-09-01
    Description: Dopamine neurons are thought to facilitate learning by comparing actual and expected reward. Despite two decades of investigation, little is known about how this comparison is made. To determine how dopamine neurons calculate prediction error, we combined optogenetic manipulations with extracellular recordings in the ventral tegmental area while mice engaged in classical conditioning. Here we demonstrate, by manipulating the temporal expectation of reward, that dopamine neurons perform subtraction, a computation that is ideal for reinforcement learning but rarely observed in the brain. Furthermore, selectively exciting and inhibiting neighbouring GABA (gamma-aminobutyric acid) neurons in the ventral tegmental area reveals that these neurons are a source of subtraction: they inhibit dopamine neurons when reward is expected, causally contributing to prediction-error calculations. Finally, bilaterally stimulating ventral tegmental area GABA neurons dramatically reduces anticipatory licking to conditioned odours, consistent with an important role for these neurons in reinforcement learning. Together, our results uncover the arithmetic and local circuitry underlying dopamine prediction errors.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4567485/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4567485/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eshel, Neir -- Bukwich, Michael -- Rao, Vinod -- Hemmelder, Vivian -- Tian, Ju -- Uchida, Naoshige -- F30 MH100729/MH/NIMH NIH HHS/ -- F30MH100729/MH/NIMH NIH HHS/ -- R01 MH095953/MH/NIMH NIH HHS/ -- R01 MH101207/MH/NIMH NIH HHS/ -- R01MH095953/MH/NIMH NIH HHS/ -- R01MH101207/MH/NIMH NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- T32GM007753/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Sep 10;525(7568):243-6. doi: 10.1038/nature14855. Epub 2015 Aug 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Brain Science, Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26322583" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Conditioning, Classical ; Dopamine/*metabolism ; Dopaminergic Neurons/*metabolism ; GABAergic Neurons/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; *Models, Neurological ; Neural Pathways/*physiology ; Odors/analysis ; Optogenetics ; Reinforcement (Psychology) ; Reward ; Time Factors ; Ventral Tegmental Area/*cytology/*physiology ; gamma-Aminobutyric Acid/metabolism
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  • 62
    Publication Date: 2015-04-02
    Description: The RNA-guided endonuclease Cas9 has emerged as a versatile genome-editing platform. However, the size of the commonly used Cas9 from Streptococcus pyogenes (SpCas9) limits its utility for basic research and therapeutic applications that use the highly versatile adeno-associated virus (AAV) delivery vehicle. Here, we characterize six smaller Cas9 orthologues and show that Cas9 from Staphylococcus aureus (SaCas9) can edit the genome with efficiencies similar to those of SpCas9, while being more than 1 kilobase shorter. We packaged SaCas9 and its single guide RNA expression cassette into a single AAV vector and targeted the cholesterol regulatory gene Pcsk9 in the mouse liver. Within one week of injection, we observed 〉40% gene modification, accompanied by significant reductions in serum Pcsk9 and total cholesterol levels. We further assess the genome-wide targeting specificity of SaCas9 and SpCas9 using BLESS, and demonstrate that SaCas9-mediated in vivo genome editing has the potential to be efficient and specific.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4393360/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4393360/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ran, F Ann -- Cong, Le -- Yan, Winston X -- Scott, David A -- Gootenberg, Jonathan S -- Kriz, Andrea J -- Zetsche, Bernd -- Shalem, Ophir -- Wu, Xuebing -- Makarova, Kira S -- Koonin, Eugene V -- Sharp, Phillip A -- Zhang, Feng -- 5DP1-MH100706/DP/NCCDPHP CDC HHS/ -- 5P30EY012196-17/EY/NEI NIH HHS/ -- 5R01DK097768-03/DK/NIDDK NIH HHS/ -- DP1 MH100706/MH/NIMH NIH HHS/ -- P01-CA42063/CA/NCI NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- R01 EY024259/EY/NEI NIH HHS/ -- R01-CA133404/CA/NCI NIH HHS/ -- R01-GM34277/GM/NIGMS NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- T32 GM008313/GM/NIGMS NIH HHS/ -- T32GM007753/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Apr 9;520(7546):186-91. doi: 10.1038/nature14299. Epub 2015 Apr 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Society of Fellows, Harvard University, Cambridge, Massachusetts 02138, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Graduate Program in Biophysics, Harvard Medical School, Boston, Massachusetts 02115, USA [3] Harvard-MIT Division of Health Sciences and Technology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [3] Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Department of Systems Biology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA. ; 1] David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Computational and Systems Biology Graduate Program, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, USA. ; 1] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [3] Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [4] Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25830891" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; CRISPR-Associated Proteins/genetics/*metabolism ; Cholesterol/blood/metabolism ; Gene Targeting ; Genetic Engineering/*methods ; Genome/*genetics ; Liver/metabolism/physiology ; Male ; Mice ; Mice, Inbred C57BL ; Proprotein Convertases/biosynthesis/blood/deficiency/genetics ; Serine Endopeptidases/biosynthesis/blood/deficiency/genetics ; Staphylococcus aureus/*enzymology/genetics ; Substrate Specificity
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  • 63
    Publication Date: 2015-10-04
    Description: Structural variants are implicated in numerous diseases and make up the majority of varying nucleotides among human genomes. Here we describe an integrated set of eight structural variant classes comprising both balanced and unbalanced variants, which we constructed using short-read DNA sequencing data and statistically phased onto haplotype blocks in 26 human populations. Analysing this set, we identify numerous gene-intersecting structural variants exhibiting population stratification and describe naturally occurring homozygous gene knockouts that suggest the dispensability of a variety of human genes. We demonstrate that structural variants are enriched on haplotypes identified by genome-wide association studies and exhibit enrichment for expression quantitative trait loci. Additionally, we uncover appreciable levels of structural variant complexity at different scales, including genic loci subject to clusters of repeated rearrangement and complex structural variants with multiple breakpoints likely to have formed through individual mutational events. Our catalogue will enhance future studies into structural variant demography, functional impact and disease association.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4617611/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4617611/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sudmant, Peter H -- Rausch, Tobias -- Gardner, Eugene J -- Handsaker, Robert E -- Abyzov, Alexej -- Huddleston, John -- Zhang, Yan -- Ye, Kai -- Jun, Goo -- Hsi-Yang Fritz, Markus -- Konkel, Miriam K -- Malhotra, Ankit -- Stutz, Adrian M -- Shi, Xinghua -- Paolo Casale, Francesco -- Chen, Jieming -- Hormozdiari, Fereydoun -- Dayama, Gargi -- Chen, Ken -- Malig, Maika -- Chaisson, Mark J P -- Walter, Klaudia -- Meiers, Sascha -- Kashin, Seva -- Garrison, Erik -- Auton, Adam -- Lam, Hugo Y K -- Jasmine Mu, Xinmeng -- Alkan, Can -- Antaki, Danny -- Bae, Taejeong -- Cerveira, Eliza -- Chines, Peter -- Chong, Zechen -- Clarke, Laura -- Dal, Elif -- Ding, Li -- Emery, Sarah -- Fan, Xian -- Gujral, Madhusudan -- Kahveci, Fatma -- Kidd, Jeffrey M -- Kong, Yu -- Lameijer, Eric-Wubbo -- McCarthy, Shane -- Flicek, Paul -- Gibbs, Richard A -- Marth, Gabor -- Mason, Christopher E -- Menelaou, Androniki -- Muzny, Donna M -- Nelson, Bradley J -- Noor, Amina -- Parrish, Nicholas F -- Pendleton, Matthew -- Quitadamo, Andrew -- Raeder, Benjamin -- Schadt, Eric E -- Romanovitch, Mallory -- Schlattl, Andreas -- Sebra, Robert -- Shabalin, Andrey A -- Untergasser, Andreas -- Walker, Jerilyn A -- Wang, Min -- Yu, Fuli -- Zhang, Chengsheng -- Zhang, Jing -- Zheng-Bradley, Xiangqun -- Zhou, Wanding -- Zichner, Thomas -- Sebat, Jonathan -- Batzer, Mark A -- McCarroll, Steven A -- 1000 Genomes Project Consortium -- Mills, Ryan E -- Gerstein, Mark B -- Bashir, Ali -- Stegle, Oliver -- Devine, Scott E -- Lee, Charles -- Eichler, Evan E -- Korbel, Jan O -- P01HG007497/HG/NHGRI NIH HHS/ -- R01 CA166661/CA/NCI NIH HHS/ -- R01 HG002385/HG/NHGRI NIH HHS/ -- R01 HG002898/HG/NHGRI NIH HHS/ -- R01CA166661/CA/NCI NIH HHS/ -- R01GM59290/GM/NIGMS NIH HHS/ -- R01HG002898/HG/NHGRI NIH HHS/ -- R01HG007068/HG/NHGRI NIH HHS/ -- RR029676-01/RR/NCRR NIH HHS/ -- RR19895/RR/NCRR NIH HHS/ -- T32 GM008666/GM/NIGMS NIH HHS/ -- U41 HG007497/HG/NHGRI NIH HHS/ -- U41HG007497/HG/NHGRI NIH HHS/ -- WT085532/Z/08/Z/Wellcome Trust/United Kingdom -- WT104947/Z/14/Z/Wellcome Trust/United Kingdom -- England -- Nature. 2015 Oct 1;526(7571):75-81. doi: 10.1038/nature15394.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genome Sciences, University of Washington, 3720 15th Avenue NE, Seattle, Washington 98195-5065, USA. ; European Molecular Biology Laboratory (EMBL), Genome Biology Unit, Meyerhofstrasse 1, 69117 Heidelberg, Germany. ; Institute for Genome Sciences, University of Maryland School of Medicine, 801 W Baltimore Street, Baltimore, Maryland 21201, USA. ; Department of Genetics, Harvard Medical School, Boston, 25 Shattuck Street, Boston, Massachusetts 02115, USA. ; Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, Massachusetts 02142, USA. ; Department of Health Sciences Research, Center for Individualized Medicine, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA. ; Howard Hughes Medical Institute, University of Washington, Seattle, Washington 98195, USA. ; Program in Computational Biology and Bioinformatics, Yale University, BASS 432 &437, 266 Whitney Avenue, New Haven, Connecticut 06520, USA. ; Department of Molecular Biophysics and Biochemistry, School of Medicine, Yale University, 266 Whitney Avenue, New Haven, Connecticut 06520, USA. ; The Genome Institute, Washington University School of Medicine, 4444 Forest Park Avenue, St Louis, Missouri 63108, USA. ; Department of Genetics, Washington University in St Louis, 4444 Forest Park Avenue, St Louis, Missouri 63108, USA. ; Department of Biostatistics and Center for Statistical Genetics, University of Michigan, 1415 Washington Heights, Ann Arbor, Michigan 48109, USA. ; Human Genetics Center, School of Public Health, The University of Texas Health Science Center at Houston, 1200 Pressler St., Houston, Texas 77030, USA. ; Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, Louisiana 70803, USA. ; The Jackson Laboratory for Genomic Medicine, 10 Discovery 263 Farmington Avenue, Farmington, Connecticut 06030, USA. ; Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, 9201 University City Blvd., Charlotte, North Carolina 28223, USA. ; European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. ; Integrated Graduate Program in Physical and Engineering Biology, Yale University, New Haven, Connecticut 06520, USA. ; Department of Computational Medicine &Bioinformatics, University of Michigan, 500 S. State Street, Ann Arbor, Michigan 48109, USA. ; The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA. ; The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK. ; Department of Biology, Boston College, 355 Higgins Hall, 140 Commonwealth Avenue, Chestnut Hill, Massachusetts 02467, USA. ; Department of Genetics, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, New York 10461, USA. ; Bina Technologies, Roche Sequencing, 555 Twin Dolphin Drive, Redwood City, California 94065, USA. ; Cancer Program, Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, Massachusetts 02142, USA. ; Department of Computer Engineering, Bilkent University, 06800 Ankara, Turkey. ; University of California San Diego (UCSD), 9500 Gilman Drive, La Jolla, California 92093, USA. ; National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20892 USA. ; Department of Medicine, Washington University in St Louis, 4444 Forest Park Avenue, St Louis, Missouri 63108, USA. ; Siteman Cancer Center, 660 South Euclid Avenue, St Louis, Missouri 63110, USA. ; Department of Human Genetics, University of Michigan, 1241 Catherine Street, Ann Arbor, Michigan 48109, USA. ; Molecular Epidemiology, Leiden University Medical Center, Leiden 2300RA, The Netherlands. ; Baylor College of Medicine, 1 Baylor Plaza, Houston, Texas 77030, USA. ; The Department of Physiology and Biophysics and the HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine, 1305 York Avenue, Weill Cornell Medical College, New York, New York 10065, USA. ; The Feil Family Brain and Mind Research Institute, 413 East 69th St, Weill Cornell Medical College, New York, New York 10065, USA. ; University of Oxford, 1 South Parks Road, Oxford OX3 9DS, UK. ; Department of Medical Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, 3584 CG, The Netherlands. ; Department of Genetics and Genomic Sciences, Icahn School of Medicine, New York School of Natural Sciences, 1428 Madison Avenue, New York, New York 10029, USA. ; Institute for Virus Research, Kyoto University, 53 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan. ; Center for Biomarker Research and Precision Medicine, Virginia Commonwealth University, 1112 East Clay Street, McGuire Hall, Richmond, Virginia 23298-0581, USA. ; Zentrum fur Molekulare Biologie, University of Heidelberg, Im Neuenheimer Feld 282, 69120 Heidelberg, Germany. ; Department of Computer Science, Yale University, 51 Prospect Street, New Haven, Connecticut 06511, USA. ; Department of Graduate Studies - Life Sciences, Ewha Womans University, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, South Korea.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26432246" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Genetic Predisposition to Disease ; Genetic Variation/*genetics ; Genetics, Medical ; Genetics, Population ; Genome, Human/*genetics ; Genome-Wide Association Study ; Genomics ; Genotype ; Haplotypes/genetics ; Homozygote ; Humans ; Molecular Sequence Data ; Mutation Rate ; *Physical Chromosome Mapping ; Polymorphism, Single Nucleotide/genetics ; Quantitative Trait Loci/genetics ; Sequence Analysis, DNA ; Sequence Deletion/genetics
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 64
    Publication Date: 2015-05-15
    Description: The tumour microenvironment may contribute to tumorigenesis owing to mechanical forces such as fibrotic stiffness or mechanical pressure caused by the expansion of hyper-proliferative cells. Here we explore the contribution of the mechanical pressure exerted by tumour growth onto non-tumorous adjacent epithelium. In the early stage of mouse colon tumour development in the Notch(+)Apc(+/1638N) mouse model, we observed mechanistic pressure stress in the non-tumorous epithelial cells caused by hyper-proliferative adjacent crypts overexpressing active Notch, which is associated with increased Ret and beta-catenin signalling. We thus developed a method that allows the delivery of a defined mechanical pressure in vivo, by subcutaneously inserting a magnet close to the mouse colon. The implanted magnet generated a magnetic force on ultra-magnetic liposomes, stabilized in the mesenchymal cells of the connective tissue surrounding colonic crypts after intravenous injection. The magnetically induced pressure quantitatively mimicked the endogenous early tumour growth stress in the order of 1,200 Pa, without affecting tissue stiffness, as monitored by ultrasound strain imaging and shear wave elastography. The exertion of pressure mimicking that of tumour growth led to rapid Ret activation and downstream phosphorylation of beta-catenin on Tyr654, imparing its interaction with the E-cadherin in adherens junctions, and which was followed by beta-catenin nuclear translocation after 15 days. As a consequence, increased expression of beta-catenin-target genes was observed at 1 month, together with crypt enlargement accompanying the formation of early tumorous aberrant crypt foci. Mechanical activation of the tumorigenic beta-catenin pathway suggests unexplored modes of tumour propagation based on mechanical signalling pathways in healthy epithelial cells surrounding the tumour, which may contribute to tumour heterogeneity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fernandez-Sanchez, Maria Elena -- Barbier, Sandrine -- Whitehead, Joanne -- Bealle, Gaelle -- Michel, Aude -- Latorre-Ossa, Heldmuth -- Rey, Colette -- Fouassier, Laura -- Claperon, Audrey -- Brulle, Laura -- Girard, Elodie -- Servant, Nicolas -- Rio-Frio, Thomas -- Marie, Helene -- Lesieur, Sylviane -- Housset, Chantal -- Gennisson, Jean-Luc -- Tanter, Mickael -- Menager, Christine -- Fre, Silvia -- Robine, Sylvie -- Farge, Emmanuel -- England -- Nature. 2015 Jul 2;523(7558):92-5. doi: 10.1038/nature14329. Epub 2015 May 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut Curie, Centre de Recherche, PSL Research University, CNRS UMR 168, Physicochimie Curie Mechanics and Genetics of Embryonic and Tumour Development, INSERM, Fondation Pierre-Gilles de Gennes, F-75005 Paris, France. ; UPMC, Sorbonne Universites, Laboratoire PHENIX Physico-chimie des Electrolytes et Nanosystemes Interfaciaux, CNRS UMR 8234, F-75005 Paris, France. ; Langevin Institut, Waves and Images ESPCI ParisTech, PSL Research University, CNRS UMR7587, Inserm U979. F-75005 Paris, France. ; Sorbonne Universites, UPMC and INSERM, UMR-S 938, CDR Saint-Antoine, F-75012 Paris, France. ; CNRS UMR3666/INSERM U1143, Endocytic Trafficking and Therapeutic Delivery, Institut Curie, Centre de Recherche, F-75005 Paris, France. ; Bioinformatic platform, U900, Institut Curie, MINES ParisTech, F-75005 Paris, France. ; Next-generation sequencing platform, Institut Curie, F-75005 Paris, France. ; CNRS UMR 8612, Laboratoire Physico-Chimie des Systemes Polyphases, Institut Galien Paris-Sud, LabEx LERMIT, Faculte de Pharmacie, Universite Paris-Sud, 92 296 Chatenay-Malabry, France. ; CNRS UMR 3215/INSERM U934, Unite de Genetique et Biologie du Developpement, Notch Signaling in Stem Cells and Tumors, Institut Curie, Centre de Recherche, F-75005 Paris, France. ; CNRS UMR144, Compartimentation et dynamique cellulaires, Morphogenesis and Cell Signalling Institut Curie, Centre de Recherche, F-75005 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25970250" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Animals ; Carcinogenesis/*pathology ; Colonic Neoplasms/*physiopathology ; Epithelial Cells/cytology/pathology ; Female ; Gene Expression Regulation, Neoplastic ; Magnets ; Male ; Metal Nanoparticles ; Mice ; Mice, Inbred C57BL ; Phosphorylation ; *Pressure ; Proto-Oncogene Proteins c-ret/metabolism ; Receptors, Notch/genetics/metabolism ; Signal Transduction ; *Tumor Microenvironment ; beta Catenin/*genetics/metabolism
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  • 65
    Publication Date: 2015-07-03
    Description: Sex determination in animals is amazingly plastic. Vertebrates display contrasting strategies ranging from complete genetic control of sex (genotypic sex determination) to environmentally determined sex (for example, temperature-dependent sex determination). Phylogenetic analyses suggest frequent evolutionary transitions between genotypic and temperature-dependent sex determination in environmentally sensitive lineages, including reptiles. These transitions are thought to involve a genotypic system becoming sensitive to temperature, with sex determined by gene-environment interactions. Most mechanistic models of transitions invoke a role for sex reversal. Sex reversal has not yet been demonstrated in nature for any amniote, although it occurs in fish and rarely in amphibians. Here we make the first report of reptile sex reversal in the wild, in the Australian bearded dragon (Pogona vitticeps), and use sex-reversed animals to experimentally induce a rapid transition from genotypic to temperature-dependent sex determination. Controlled mating of normal males to sex-reversed females produces viable and fertile offspring whose phenotypic sex is determined solely by temperature (temperature-dependent sex determination). The W sex chromosome is eliminated from this lineage in the first generation. The instantaneous creation of a lineage of ZZ temperature-sensitive animals reveals a novel, climate-induced pathway for the rapid transition between genetic and temperature-dependent sex determination, and adds to concern about adaptation to rapid global climate change.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holleley, Clare E -- O'Meally, Denis -- Sarre, Stephen D -- Marshall Graves, Jennifer A -- Ezaz, Tariq -- Matsubara, Kazumi -- Azad, Bhumika -- Zhang, Xiuwen -- Georges, Arthur -- England -- Nature. 2015 Jul 2;523(7558):79-82. doi: 10.1038/nature14574.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Applied Ecology, University of Canberra, Canberra, Australian Capital Territory 2601, Australia. ; 1] Institute for Applied Ecology, University of Canberra, Canberra, Australian Capital Territory 2601, Australia [2] School of Life Science, La Trobe University, Melbourne, Victoria 3086, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26135451" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptation, Physiological ; Animals ; Australia ; Female ; Male ; Molecular Sequence Data ; Reptiles ; Sex Chromosomes/genetics ; Sex Determination Processes/genetics/*physiology ; Sex Ratio ; *Temperature
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  • 66
    Publication Date: 2015-09-17
    Description: Multicellular assemblages of microorganisms are ubiquitous in nature, and the proximity afforded by aggregation is thought to permit intercellular metabolic coupling that can accommodate otherwise unfavourable reactions. Consortia of methane-oxidizing archaea and sulphate-reducing bacteria are a well-known environmental example of microbial co-aggregation; however, the coupling mechanisms between these paired organisms is not well understood, despite the attention given them because of the global significance of anaerobic methane oxidation. Here we examined the influence of interspecies spatial positioning as it relates to biosynthetic activity within structurally diverse uncultured methane-oxidizing consortia by measuring stable isotope incorporation for individual archaeal and bacterial cells to constrain their potential metabolic interactions. In contrast to conventional models of syntrophy based on the passage of molecular intermediates, cellular activities were found to be independent of both species intermixing and distance between syntrophic partners within consortia. A generalized model of electric conductivity between co-associated archaea and bacteria best fit the empirical data. Combined with the detection of large multi-haem cytochromes in the genomes of methanotrophic archaea and the demonstration of redox-dependent staining of the matrix between cells in consortia, these results provide evidence for syntrophic coupling through direct electron transfer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McGlynn, Shawn E -- Chadwick, Grayson L -- Kempes, Christopher P -- Orphan, Victoria J -- England -- Nature. 2015 Oct 22;526(7574):531-5. doi: 10.1038/nature15512. Epub 2015 Sep 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, USA. ; Exobiology Branch, National Aeronautics and Space Administration Ames Research Center, Moffett Field, California 94035, USA. ; Control and Dynamical Systems, California Institute of Technology, Pasadena, California 91125, USA. ; SETI Institute, Mountain View, California 94034, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26375009" target="_blank"〉PubMed〈/a〉
    Keywords: Anaerobiosis ; Archaea/cytology/*metabolism ; Cytochromes/genetics/metabolism/ultrastructure ; Deltaproteobacteria/cytology/*metabolism ; Diffusion ; Electron Transport ; Genome, Archaeal/genetics ; Genome, Bacterial/genetics ; Heme/metabolism ; Methane/*metabolism ; Microbiota/physiology ; Models, Biological ; Molecular Sequence Data ; *Single-Cell Analysis ; Sulfates/metabolism ; *Symbiosis
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  • 67
    Publication Date: 2015-11-19
    Description: Prevailing dogma holds that cell-cell communication through Notch ligands and receptors determines binary cell fate decisions during progenitor cell divisions, with differentiated lineages remaining fixed. Mucociliary clearance in mammalian respiratory airways depends on secretory cells (club and goblet) and ciliated cells to produce and transport mucus. During development or repair, the closely related Jagged ligands (JAG1 and JAG2) induce Notch signalling to determine the fate of these lineages as they descend from a common proliferating progenitor. In contrast to such situations in which cell fate decisions are made in rapidly dividing populations, cells of the homeostatic adult airway epithelium are long-lived, and little is known about the role of active Notch signalling under such conditions. To disrupt Jagged signalling acutely in adult mammals, here we generate antibody antagonists that selectively target each Jagged paralogue, and determine a crystal structure that explains selectivity. We show that acute Jagged blockade induces a rapid and near-complete loss of club cells, with a concomitant gain in ciliated cells, under homeostatic conditions without increased cell death or division. Fate analyses demonstrate a direct conversion of club cells to ciliated cells without proliferation, meeting a conservative definition of direct transdifferentiation. Jagged inhibition also reversed goblet cell metaplasia in a preclinical asthma model, providing a therapeutic foundation. Our discovery that Jagged antagonism relieves a blockade of cell-to-cell conversion unveils unexpected plasticity, and establishes a model for Notch regulation of transdifferentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lafkas, Daniel -- Shelton, Amy -- Chiu, Cecilia -- de Leon Boenig, Gladys -- Chen, Yongmei -- Stawicki, Scott S -- Siltanen, Christian -- Reichelt, Mike -- Zhou, Meijuan -- Wu, Xiumin -- Eastham-Anderson, Jeffrey -- Moore, Heather -- Roose-Girma, Meron -- Chinn, Yvonne -- Hang, Julie Q -- Warming, Soren -- Egen, Jackson -- Lee, Wyne P -- Austin, Cary -- Wu, Yan -- Payandeh, Jian -- Lowe, John B -- Siebel, Christian W -- England -- Nature. 2015 Dec 3;528(7580):127-31. doi: 10.1038/nature15715. Epub 2015 Nov 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Discovery Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Antibody Engineering, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Structural Biology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Pathology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Translational Immunology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Discovery Immunology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Molecular Biology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Departments of Protein Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26580007" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/immunology/pharmacology/*therapeutic use ; Asthma/drug therapy/metabolism/pathology ; Calcium-Binding Proteins/antagonists & inhibitors/immunology/metabolism ; Cell Death/drug effects ; Cell Division/drug effects ; Cell Lineage/drug effects ; Cell Tracking ; *Cell Transdifferentiation/drug effects ; Cilia/metabolism ; Disease Models, Animal ; Female ; Goblet Cells/cytology/drug effects/pathology ; Homeostasis/drug effects ; Humans ; Intercellular Signaling Peptides and Proteins/immunology/metabolism ; Ligands ; Lung/*cytology/drug effects/*metabolism ; Male ; Membrane Proteins/antagonists & inhibitors/immunology/metabolism ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Receptors, Notch/*metabolism ; Signal Transduction/drug effects
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  • 68
    Publication Date: 2015-05-29
    Description: Interactions between primary producers and bacteria impact the physiology of both partners, alter the chemistry of their environment, and shape ecosystem diversity. In marine ecosystems, these interactions are difficult to study partly because the major photosynthetic organisms are microscopic, unicellular phytoplankton. Coastal phytoplankton communities are dominated by diatoms, which generate approximately 40% of marine primary production and form the base of many marine food webs. Diatoms co-occur with specific bacterial taxa, but the mechanisms of potential interactions are mostly unknown. Here we tease apart a bacterial consortium associated with a globally distributed diatom and find that a Sulfitobacter species promotes diatom cell division via secretion of the hormone indole-3-acetic acid, synthesized by the bacterium using both diatom-secreted and endogenous tryptophan. Indole-3-acetic acid and tryptophan serve as signalling molecules that are part of a complex exchange of nutrients, including diatom-excreted organosulfur molecules and bacterial-excreted ammonia. The potential prevalence of this mode of signalling in the oceans is corroborated by metabolite and metatranscriptome analyses that show widespread indole-3-acetic acid production by Sulfitobacter-related bacteria, particularly in coastal environments. Our study expands on the emerging recognition that marine microbial communities are part of tightly connected networks by providing evidence that these interactions are mediated through production and exchange of infochemicals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Amin, S A -- Hmelo, L R -- van Tol, H M -- Durham, B P -- Carlson, L T -- Heal, K R -- Morales, R L -- Berthiaume, C T -- Parker, M S -- Djunaedi, B -- Ingalls, A E -- Parsek, M R -- Moran, M A -- Armbrust, E V -- England -- Nature. 2015 Jun 4;522(7554):98-101. doi: 10.1038/nature14488. Epub 2015 May 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] School of Oceanography, University of Washington, Seattle, Washington 98195, USA [2] Chemistry Faculty, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates. ; Department of Microbiology, University of Washington, Seattle, Washington 98195, USA. ; School of Oceanography, University of Washington, Seattle, Washington 98195, USA. ; Department of Microbiology, University of Georgia, Athens, Georgia 30602, USA. ; Department of Marine Science, University of Georgia, Athens, Georgia 30602, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26017307" target="_blank"〉PubMed〈/a〉
    Keywords: Diatoms/cytology/genetics/*metabolism/*microbiology ; *Ecosystem ; Indoleacetic Acids/*metabolism ; Metabolomics ; Molecular Sequence Data ; Oceans and Seas ; Photosynthesis ; Phytoplankton/cytology/genetics/*metabolism/*microbiology ; Rhodobacteraceae/genetics/*metabolism ; Seawater/chemistry ; Transcriptome ; Tryptophan/metabolism
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  • 69
    Publication Date: 2015-04-16
    Description: Disruption of epithelial polarity is a key event in the acquisition of neoplastic growth. JNK signalling is known to play an important part in driving the malignant progression of many epithelial tumours, although the link between loss of polarity and JNK signalling remains elusive. In a Drosophila genome-wide genetic screen designed to identify molecules implicated in neoplastic growth, we identified grindelwald (grnd), a gene encoding a transmembrane protein with homology to members of the tumour necrosis factor receptor (TNFR) superfamily. Here we show that Grnd mediates the pro-apoptotic functions of Eiger (Egr), the unique Drosophila TNF, and that overexpression of an active form of Grnd lacking the extracellular domain is sufficient to activate JNK signalling in vivo. Grnd also promotes the invasiveness of Ras(V12)/scrib(-/-) tumours through Egr-dependent Matrix metalloprotease-1 (Mmp1) expression. Grnd localizes to the subapical membrane domain with the cell polarity determinant Crumbs (Crb) and couples Crb-induced loss of polarity with JNK activation and neoplastic growth through physical interaction with Veli (also known as Lin-7). Therefore, Grnd represents the first example of a TNFR that integrates signals from both Egr and apical polarity determinants to induce JNK-dependent cell death or tumour growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Andersen, Ditte S -- Colombani, Julien -- Palmerini, Valentina -- Chakrabandhu, Krittalak -- Boone, Emilie -- Rothlisberger, Michael -- Toggweiler, Janine -- Basler, Konrad -- Mapelli, Marina -- Hueber, Anne-Odile -- Leopold, Pierre -- England -- Nature. 2015 Jun 25;522(7557):482-6. doi: 10.1038/nature14298. Epub 2015 Apr 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] University of Nice-Sophia Antipolis, Institute of Biology Valrose, Parc Valrose, 06108 Nice, France [2] CNRS, Institute of Biology Valrose, Parc Valrose, 06108 Nice, France [3] INSERM, Institute of Biology Valrose, Parc Valrose, 06108 Nice, France [4] Genetics and Physiology of Growth laboratory, Institute of Biology Valrose, Parc Valrose, 06108 Nice, France. ; Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139 Milan, Italy. ; 1] University of Nice-Sophia Antipolis, Institute of Biology Valrose, Parc Valrose, 06108 Nice, France [2] CNRS, Institute of Biology Valrose, Parc Valrose, 06108 Nice, France [3] INSERM, Institute of Biology Valrose, Parc Valrose, 06108 Nice, France [4] Death receptors Signalling and Cancer Therapy laboratory, Institute of Biology Valrose, Parc Valrose, 06108 Nice, France. ; Institute of Molecular Life Sciences, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25874673" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apoptosis/genetics ; Cell Adhesion Molecules/metabolism ; Cell Division/genetics ; *Cell Polarity/genetics ; Cell Transformation, Neoplastic/genetics ; Disease Models, Animal ; Drosophila Proteins/chemistry/deficiency/genetics/*metabolism ; Drosophila melanogaster/*cytology/enzymology/genetics/*metabolism ; Female ; Humans ; JNK Mitogen-Activated Protein Kinases/metabolism ; MAP Kinase Signaling System ; Male ; Matrix Metalloproteinase 1/metabolism ; Membrane Proteins/chemistry/deficiency/genetics/*metabolism ; Molecular Sequence Data ; Neoplasm Invasiveness/genetics ; Neoplasms/enzymology/genetics/*metabolism/*pathology ; Receptors, Tumor Necrosis Factor/chemistry/genetics/*metabolism ; ras Proteins/genetics/metabolism
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  • 70
    Publication Date: 2015-03-13
    Description: Since 2013 the occurrence of human infections by a novel avian H7N9 influenza virus in China has demonstrated the continuing threat posed by zoonotic pathogens. Although the first outbreak wave that was centred on eastern China was seemingly averted, human infections recurred in October 2013 (refs 3-7). It is unclear how the H7N9 virus re-emerged and how it will develop further; potentially it may become a long-term threat to public health. Here we show that H7N9 viruses have spread from eastern to southern China and become persistent in chickens, which has led to the establishment of multiple regionally distinct lineages with different reassortant genotypes. Repeated introductions of viruses from Zhejiang to other provinces and the presence of H7N9 viruses at live poultry markets have fuelled the recurrence of human infections. This rapid expansion of the geographical distribution and genetic diversity of the H7N9 viruses poses a direct challenge to current disease control systems. Our results also suggest that H7N9 viruses have become enzootic in China and may spread beyond the region, following the pattern previously observed with H5N1 and H9N2 influenza viruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lam, Tommy Tsan-Yuk -- Zhou, Boping -- Wang, Jia -- Chai, Yujuan -- Shen, Yongyi -- Chen, Xinchun -- Ma, Chi -- Hong, Wenshan -- Chen, Yin -- Zhang, Yanjun -- Duan, Lian -- Chen, Peiwen -- Jiang, Junfei -- Zhang, Yu -- Li, Lifeng -- Poon, Leo Lit Man -- Webby, Richard J -- Smith, David K -- Leung, Gabriel M -- Peiris, Joseph S M -- Holmes, Edward C -- Guan, Yi -- Zhu, Huachen -- HHSN272201400006C/PHS HHS/ -- England -- Nature. 2015 Jun 4;522(7554):102-5. doi: 10.1038/nature14348. Epub 2015 Mar 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] State Key Laboratory of Emerging Infectious Diseases (HKU-Shenzhen Branch), Shenzhen Third People's Hospital, Shenzhen 518112, China [2] Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College (SUMC), Shantou 515041, China [3] Centre of Influenza Research, School of Public Health, The University of Hong Kong (HKU), Hong Kong, China. ; State Key Laboratory of Emerging Infectious Diseases (HKU-Shenzhen Branch), Shenzhen Third People's Hospital, Shenzhen 518112, China. ; 1] Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College (SUMC), Shantou 515041, China [2] Centre of Influenza Research, School of Public Health, The University of Hong Kong (HKU), Hong Kong, China. ; Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College (SUMC), Shantou 515041, China. ; Key Laboratory of Emergency Detection for Public Health of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310051, China. ; 1] State Key Laboratory of Emerging Infectious Diseases (HKU-Shenzhen Branch), Shenzhen Third People's Hospital, Shenzhen 518112, China [2] Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College (SUMC), Shantou 515041, China. ; 1] State Key Laboratory of Emerging Infectious Diseases (HKU-Shenzhen Branch), Shenzhen Third People's Hospital, Shenzhen 518112, China [2] Centre of Influenza Research, School of Public Health, The University of Hong Kong (HKU), Hong Kong, China. ; Division of Virology, Department of Infectious Diseases, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA. ; Centre of Influenza Research, School of Public Health, The University of Hong Kong (HKU), Hong Kong, China. ; Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Biological Sciences and Sydney Medical School, University of Sydney, Sydney, New South Wales 2006, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25762140" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chickens/*virology ; China/epidemiology ; Ecosystem ; *Evolution, Molecular ; Genotype ; Humans ; Influenza A Virus, H7N9 Subtype/classification/*genetics/*isolation & ; purification ; Influenza in Birds/*epidemiology/transmission/*virology ; Influenza, Human/epidemiology/transmission/virology ; Molecular Sequence Data ; Reassortant Viruses/genetics/isolation & purification ; Zoonoses/transmission/virology
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  • 71
    Publication Date: 2015-02-18
    Description: Darwin's finches, inhabiting the Galapagos archipelago and Cocos Island, constitute an iconic model for studies of speciation and adaptive evolution. Here we report the results of whole-genome re-sequencing of 120 individuals representing all of the Darwin's finch species and two close relatives. Phylogenetic analysis reveals important discrepancies with the phenotype-based taxonomy. We find extensive evidence for interspecific gene flow throughout the radiation. Hybridization has given rise to species of mixed ancestry. A 240 kilobase haplotype encompassing the ALX1 gene that encodes a transcription factor affecting craniofacial development is strongly associated with beak shape diversity across Darwin's finch species as well as within the medium ground finch (Geospiza fortis), a species that has undergone rapid evolution of beak shape in response to environmental changes. The ALX1 haplotype has contributed to diversification of beak shapes among the Darwin's finches and, thereby, to an expanded utilization of food resources.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lamichhaney, Sangeet -- Berglund, Jonas -- Almen, Markus Sallman -- Maqbool, Khurram -- Grabherr, Manfred -- Martinez-Barrio, Alvaro -- Promerova, Marta -- Rubin, Carl-Johan -- Wang, Chao -- Zamani, Neda -- Grant, B Rosemary -- Grant, Peter R -- Webster, Matthew T -- Andersson, Leif -- England -- Nature. 2015 Feb 19;518(7539):371-5. doi: 10.1038/nature14181. Epub 2015 Feb 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Biochemistry and Microbiology, Uppsala University, SE-751 23 Uppsala, Sweden. ; Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden. ; 1] Department of Medical Biochemistry and Microbiology, Uppsala University, SE-751 23 Uppsala, Sweden [2] Department of Plant Physiology, Umea University, SE-901 87 Umea, Sweden. ; Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey 08544, USA. ; 1] Department of Medical Biochemistry and Microbiology, Uppsala University, SE-751 23 Uppsala, Sweden [2] Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden [3] Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas 77843-4458, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25686609" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avian Proteins/genetics/metabolism ; Beak/*anatomy & histology ; Ecuador ; *Evolution, Molecular ; Female ; Finches/*anatomy & histology/classification/embryology/*genetics ; Gene Flow ; Genome/genetics ; Haplotypes/genetics ; Hybridization, Genetic ; Indian Ocean Islands ; Male ; Molecular Sequence Data ; Phylogeny ; Transcription Factors/genetics/metabolism
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  • 72
    Publication Date: 2015-08-13
    Description: Tropical mountains are hot spots of biodiversity and endemism, but the evolutionary origins of their unique biotas are poorly understood. In varying degrees, local and regional extinction, long-distance colonization, and local recruitment may all contribute to the exceptional character of these communities. Also, it is debated whether mountain endemics mostly originate from local lowland taxa, or from lineages that reach the mountain by long-range dispersal from cool localities elsewhere. Here we investigate the evolutionary routes to endemism by sampling an entire tropical mountain biota on the 4,095-metre-high Mount Kinabalu in Sabah, East Malaysia. We discover that most of its unique biodiversity is younger than the mountain itself (6 million years), and comprises a mix of immigrant pre-adapted lineages and descendants from local lowland ancestors, although substantial shifts from lower to higher vegetation zones in this latter group were rare. These insights could improve forecasts of the likelihood of extinction and 'evolutionary rescue' in montane biodiversity hot spots under climate change scenarios.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Merckx, Vincent S F T -- Hendriks, Kasper P -- Beentjes, Kevin K -- Mennes, Constantijn B -- Becking, Leontine E -- Peijnenburg, Katja T C A -- Afendy, Aqilah -- Arumugam, Nivaarani -- de Boer, Hugo -- Biun, Alim -- Buang, Matsain M -- Chen, Ping-Ping -- Chung, Arthur Y C -- Dow, Rory -- Feijen, Frida A A -- Feijen, Hans -- Feijen-van Soest, Cobi -- Geml, Jozsef -- Geurts, Rene -- Gravendeel, Barbara -- Hovenkamp, Peter -- Imbun, Paul -- Ipor, Isa -- Janssens, Steven B -- Jocque, Merlijn -- Kappes, Heike -- Khoo, Eyen -- Koomen, Peter -- Lens, Frederic -- Majapun, Richard J -- Morgado, Luis N -- Neupane, Suman -- Nieser, Nico -- Pereira, Joan T -- Rahman, Homathevi -- Sabran, Suzana -- Sawang, Anati -- Schwallier, Rachel M -- Shim, Phyau-Soon -- Smit, Harry -- Sol, Nicolien -- Spait, Maipul -- Stech, Michael -- Stokvis, Frank -- Sugau, John B -- Suleiman, Monica -- Sumail, Sukaibin -- Thomas, Daniel C -- van Tol, Jan -- Tuh, Fred Y Y -- Yahya, Bakhtiar E -- Nais, Jamili -- Repin, Rimi -- Lakim, Maklarin -- Schilthuizen, Menno -- England -- Nature. 2015 Aug 20;524(7565):347-50. doi: 10.1038/nature14949. Epub 2015 Aug 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, The Netherlands. ; Institute of Biology Leiden, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands. ; Groningen Institute for Evolutionary Life Sciences, University of Groningen, Nijenborg 7, 9747 AG Groningen, The Netherlands. ; Wageningen University &Research centre, Marine Animal Ecology Group, PO Box 338, 6700 AH Wageningen, The Netherlands. ; Department of Environmental Science, Policy, &Management, University of California Berkeley, 130 Mulford Hall #3114, Berkeley, California 94720, USA. ; Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands. ; Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia. ; Faculty of Earth Science, Universiti Malaysia Kelantan, Jeli Campus, Locked bag No.100, 17600 Jeli, Kelantan Darul Naim, Malaysia. ; Department of Organismal Biology, Uppsala University, Norbyvagen 18D, 75236 Uppsala, Sweden. ; Natural History Museum, University of Oslo, P.O. Box 1172 Blindern, NO-0318 Oslo, Norway. ; Sabah Parks, Lot 45 &46, Level 1-5, Blok H, KK Times Square, 88806 Kota Kinabalu, Sabah, Malaysia. ; Forest Research Centre, Sabah Forestry Department, P.O. Box 1407, 90175 Sandakan, Sabah, Malaysia. ; Wageningen University, Department of Plant Sciences, Laboratory of Molecular Biology, 6700AP Wageningen, The Netherlands. ; University of Applied Sciences Leiden, Zernikedreef 11, 2333 CK Leiden, The Netherlands. ; Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia. ; Botanic Garden Meise, Nieuwelaan 38, 1860 Meise, Belgium. ; Royal Belgian Institute of Natural Sciences, Aquatic and Terrestrial Ecology, Vautierstraat 29, 1000 Brussels, Belgium. ; Rutgers, The State University of New Jersey, Department of Biological Sciences, 195 University Avenue, Boyden Hall, Newark, New Jersey 07102, USA. ; Zoological Institute, University of Cologne, Zulpicher Strasse 47b, D-50674 Cologne, Germany. ; Natuurmuseum Fryslan, Schoenmakersperk 2, 8911 EM Leeuwarden, The Netherlands. ; EEB Department, University of Connecticut, 75 N. Eagleville Road, Storrs, Connecticut 06269-3043, USA. ; School of Biological Sciences, University of Hong Kong, Pok Fu Lam Road, Hong Kong, China. ; Singapore Botanic Gardens, 1 Cluny Road, 259569 Singapore, Republic of Singapore.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26266979" target="_blank"〉PubMed〈/a〉
    Keywords: *Altitude ; Animal Migration ; Animals ; *Biota ; Climate Change ; DNA Barcoding, Taxonomic ; Extinction, Biological ; Introduced Species/*statistics & numerical data ; Malaysia ; Molecular Sequence Data ; *Phylogeny ; *Phylogeography ; Plants/classification/genetics ; Time Factors ; *Tropical Climate
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  • 73
    Publication Date: 2015-12-23
    Description: Two-pore channels (TPCs) contain two copies of a Shaker-like six-transmembrane (6-TM) domain in each subunit and are ubiquitously expressed in both animals and plants as organellar cation channels. Here we present the crystal structure of a vacuolar two-pore channel from Arabidopsis thaliana, AtTPC1, which functions as a homodimer. AtTPC1 activation requires both voltage and cytosolic Ca(2+). Ca(2+) binding to the cytosolic EF-hand domain triggers conformational changes coupled to the pair of pore-lining inner helices from the first 6-TM domains, whereas membrane potential only activates the second voltage-sensing domain, the conformational changes of which are coupled to the pair of inner helices from the second 6-TM domains. Luminal Ca(2+) or Ba(2+) can modulate voltage activation by stabilizing the second voltage-sensing domain in the resting state and shift voltage activation towards more positive potentials. Our Ba(2+)-bound AtTPC1 structure reveals a voltage sensor in the resting state, providing hitherto unseen structural insight into the general voltage-gating mechanism among voltage-gated channels.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4841471/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4841471/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guo, Jiangtao -- Zeng, Weizhong -- Chen, Qingfeng -- Lee, Changkeun -- Chen, Liping -- Yang, Yi -- Cang, Chunlei -- Ren, Dejian -- Jiang, Youxing -- GM079179/GM/NIGMS NIH HHS/ -- NS055293/NS/NINDS NIH HHS/ -- NS074257/NS/NINDS NIH HHS/ -- R01 GM079179/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Mar 10;531(7593):196-201. doi: 10.1038/nature16446. Epub 2015 Dec 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of Texas Southwestern Medical Center, Dallas, Texas 75390-9040, USA. ; Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas 75390-9040, USA. ; Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26689363" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/*chemistry ; Arabidopsis Proteins/*chemistry/genetics/metabolism ; Barium/metabolism ; Binding Sites ; Calcium/metabolism/pharmacology ; Calcium Channels/*chemistry/genetics/metabolism ; Crystallography, X-Ray ; Cytosol/metabolism ; EF Hand Motifs ; Electric Conductivity ; HEK293 Cells ; Humans ; Ion Channel Gating/drug effects ; Ion Transport/drug effects ; Membrane Potentials/drug effects ; Models, Molecular ; Molecular Sequence Data ; Protein Multimerization ; Protein Structure, Quaternary ; Protein Subunits/chemistry/metabolism
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  • 74
    Publication Date: 2015-06-02
    Description: One of the characteristics of the central nervous system is the lack of a classical lymphatic drainage system. Although it is now accepted that the central nervous system undergoes constant immune surveillance that takes place within the meningeal compartment, the mechanisms governing the entrance and exit of immune cells from the central nervous system remain poorly understood. In searching for T-cell gateways into and out of the meninges, we discovered functional lymphatic vessels lining the dural sinuses. These structures express all of the molecular hallmarks of lymphatic endothelial cells, are able to carry both fluid and immune cells from the cerebrospinal fluid, and are connected to the deep cervical lymph nodes. The unique location of these vessels may have impeded their discovery to date, thereby contributing to the long-held concept of the absence of lymphatic vasculature in the central nervous system. The discovery of the central nervous system lymphatic system may call for a reassessment of basic assumptions in neuroimmunology and sheds new light on the aetiology of neuroinflammatory and neurodegenerative diseases associated with immune system dysfunction.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506234/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506234/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Louveau, Antoine -- Smirnov, Igor -- Keyes, Timothy J -- Eccles, Jacob D -- Rouhani, Sherin J -- Peske, J David -- Derecki, Noel C -- Castle, David -- Mandell, James W -- Lee, Kevin S -- Harris, Tajie H -- Kipnis, Jonathan -- P30 CA044579/CA/NCI NIH HHS/ -- R01 AG034113/AG/NIA NIH HHS/ -- R01 NS061973/NS/NINDS NIH HHS/ -- R01AG034113/AG/NIA NIH HHS/ -- R01NS061973/NS/NINDS NIH HHS/ -- England -- Nature. 2015 Jul 16;523(7560):337-41. doi: 10.1038/nature14432. Epub 2015 Jun 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Center for Brain Immunology and Glia, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA [2] Department of Neuroscience, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA. ; 1] Medical Scientist Training Program, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA [2] Beirne B. Carter Center for Immunology Research, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA [3] Department of Medicine (Division of Allergy), School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA. ; 1] Medical Scientist Training Program, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA [2] Beirne B. Carter Center for Immunology Research, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA [3] Department of Microbiology, Immunology, and Cancer Biology, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA. ; Department of Cell Biology, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA. ; Department of Pathology (Neuropathology), School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA. ; 1] Center for Brain Immunology and Glia, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA [2] Department of Neuroscience, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA [3] Department of Neurosurgery, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA. ; 1] Center for Brain Immunology and Glia, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA [2] Department of Neuroscience, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA [3] Medical Scientist Training Program, School of Medicine, University of Virginia, Charlottesville, Virginia 22908, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26030524" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Central Nervous System/*anatomy & histology/cytology/*immunology ; Cranial Sinuses/anatomy & histology ; Female ; Humans ; Immune Tolerance/immunology ; Immunologic Surveillance/immunology ; Lymphatic Vessels/*anatomy & histology/cytology/*immunology ; Male ; Meninges/anatomy & histology/cytology/immunology ; Mice, Inbred C57BL ; T-Lymphocytes/cytology/immunology
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  • 75
    Publication Date: 2015-09-30
    Description: Influenza A viruses pose a major public health threat by causing seasonal epidemics and sporadic pandemics. Their epidemiological success relies on airborne transmission from person to person; however, the viral properties governing airborne transmission of influenza A viruses are complex. Influenza A virus infection is mediated via binding of the viral haemagglutinin (HA) to terminally attached alpha2,3 or alpha2,6 sialic acids on cell surface glycoproteins. Human influenza A viruses preferentially bind alpha2,6-linked sialic acids whereas avian influenza A viruses bind alpha2,3-linked sialic acids on complex glycans on airway epithelial cells. Historically, influenza A viruses with preferential association with alpha2,3-linked sialic acids have not been transmitted efficiently by the airborne route in ferrets. Here we observe efficient airborne transmission of a 2009 pandemic H1N1 (H1N1pdm) virus (A/California/07/2009) engineered to preferentially bind alpha2,3-linked sialic acids. Airborne transmission was associated with rapid selection of virus with a change at a single HA site that conferred binding to long-chain alpha2,6-linked sialic acids, without loss of alpha2,3-linked sialic acid binding. The transmissible virus emerged in experimentally infected ferrets within 24 hours after infection and was remarkably enriched in the soft palate, where long-chain alpha2,6-linked sialic acids predominate on the nasopharyngeal surface. Notably, presence of long-chain alpha2,6-linked sialic acids is conserved in ferret, pig and human soft palate. Using a loss-of-function approach with this one virus, we demonstrate that the ferret soft palate, a tissue not normally sampled in animal models of influenza, rapidly selects for transmissible influenza A viruses with human receptor (alpha2,6-linked sialic acids) preference.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4592815/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4592815/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lakdawala, Seema S -- Jayaraman, Akila -- Halpin, Rebecca A -- Lamirande, Elaine W -- Shih, Angela R -- Stockwell, Timothy B -- Lin, Xudong -- Simenauer, Ari -- Hanson, Christopher T -- Vogel, Leatrice -- Paskel, Myeisha -- Minai, Mahnaz -- Moore, Ian -- Orandle, Marlene -- Das, Suman R -- Wentworth, David E -- Sasisekharan, Ram -- Subbarao, Kanta -- HHSN272200900007C/PHS HHS/ -- R01 GM057073/GM/NIGMS NIH HHS/ -- R37 GM057073-13/GM/NIGMS NIH HHS/ -- U19 AI110819/AI/NIAID NIH HHS/ -- U19-AI-110819/AI/NIAID NIH HHS/ -- Intramural NIH HHS/ -- England -- Nature. 2015 Oct 1;526(7571):122-5. doi: 10.1038/nature15379. Epub 2015 Sep 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Department of Biological Engineering, Koch Institute for Integrative Cancer Research, Singapore-MIT Alliance for Research and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; J. Craig Venter Institute, Rockville, Maryland 20850, USA. ; Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26416728" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptation, Physiological/genetics ; Animals ; Epithelial Cells/metabolism/virology ; Female ; Ferrets/virology ; Hemagglutinin Glycoproteins, Influenza Virus/genetics/metabolism ; Humans ; Influenza A Virus, H1N1 Subtype/chemistry/genetics/*physiology ; Male ; Molecular Sequence Data ; Orthomyxoviridae Infections/transmission/virology ; Palate, Soft/chemistry/*metabolism/*virology ; Receptors, Virus/*metabolism ; Respiratory System/cytology/metabolism/virology ; *Selection, Genetic/genetics ; Sialic Acids/chemistry/metabolism ; Swine/virology
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  • 76
    Publication Date: 2015-12-25
    Description: Plasmodium falciparum antigens expressed on the surface of infected erythrocytes are important targets of naturally acquired immunity against malaria, but their high number and variability provide the pathogen with a powerful means of escape from host antibodies. Although broadly reactive antibodies against these antigens could be useful as therapeutics and in vaccine design, their identification has proven elusive. Here we report the isolation of human monoclonal antibodies that recognize erythrocytes infected by different P. falciparum isolates and opsonize these cells by binding to members of the RIFIN family. These antibodies acquired broad reactivity through a novel mechanism of insertion of a large DNA fragment between the V and DJ segments. The insert, which is both necessary and sufficient for binding to RIFINs, encodes the entire 98 amino acid collagen-binding domain of LAIR1, an immunoglobulin superfamily inhibitory receptor encoded on chromosome 19. In each of the two donors studied, the antibodies are produced by a single expanded B-cell clone and carry distinct somatic mutations in the LAIR1 domain that abolish binding to collagen and increase binding to infected erythrocytes. These findings illustrate, with a biologically relevant example, a novel mechanism of antibody diversification by interchromosomal DNA transposition and demonstrate the existence of conserved epitopes that may be suitable candidates for the development of a malaria vaccine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tan, Joshua -- Pieper, Kathrin -- Piccoli, Luca -- Abdi, Abdirahman -- Foglierini, Mathilde -- Geiger, Roger -- Tully, Claire Maria -- Jarrossay, David -- Ndungu, Francis Maina -- Wambua, Juliana -- Bejon, Philip -- Fregni, Chiara Silacci -- Fernandez-Rodriguez, Blanca -- Barbieri, Sonia -- Bianchi, Siro -- Marsh, Kevin -- Thathy, Vandana -- Corti, Davide -- Sallusto, Federica -- Bull, Peter -- Lanzavecchia, Antonio -- 077092/Wellcome Trust/United Kingdom -- 084113/Z/07/Z/Wellcome Trust/United Kingdom -- 084378/Z/07/A/Wellcome Trust/United Kingdom -- 084535/Wellcome Trust/United Kingdom -- 084538/Wellcome Trust/United Kingdom -- 092654/Wellcome Trust/United Kingdom -- 092741/Wellcome Trust/United Kingdom -- 099811/Wellcome Trust/United Kingdom -- England -- Nature. 2016 Jan 7;529(7584):105-9. doi: 10.1038/nature16450. Epub 2015 Dec 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Research in Biomedicine, Universita della Svizzera Italiana, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland. ; KEMRI-Wellcome Trust Research Programme, CGMRC, PO Box 230, 80108 Kilifi, Kenya. ; Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK. ; Institute for Microbiology, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland. ; Humabs BioMed SA, 6500 Bellinzona, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26700814" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antibodies, Monoclonal/chemistry/genetics/*immunology/therapeutic use ; *Antibody Specificity ; Antigenic Variation/*immunology ; Antigens, Protozoan/*immunology ; B-Lymphocytes/cytology/immunology ; Clone Cells/cytology/immunology ; Collagen/immunology/metabolism ; Conserved Sequence/immunology ; DNA Transposable Elements/genetics/immunology ; Epitopes, B-Lymphocyte/chemistry/immunology ; Erythrocytes/immunology/metabolism/parasitology ; Humans ; Kenya ; Malaria/*immunology/parasitology ; Malaria Vaccines/chemistry/immunology ; Membrane Proteins/chemistry/immunology ; Molecular Sequence Data ; Mutagenesis, Insertional/*genetics ; Plasmodium falciparum/*immunology ; Protein Structure, Tertiary/genetics ; Protozoan Proteins/chemistry/immunology ; Receptors, Immunologic/chemistry/genetics/*immunology/metabolism
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  • 77
    Publication Date: 2015-01-13
    Description: Dengue disease is caused by four different flavivirus serotypes, which infect 390 million people yearly with 25% symptomatic cases and for which no licensed vaccine is available. Recent phase III vaccine trials showed partial protection, and in particular no protection for dengue virus serotype 2 (refs 3, 4). Structural studies so far have characterized only epitopes recognized by serotype-specific human antibodies. We recently isolated human antibodies potently neutralizing all four dengue virus serotypes. Here we describe the X-ray structures of four of these broadly neutralizing antibodies in complex with the envelope glycoprotein E from dengue virus serotype 2, revealing that the recognition determinants are at a serotype-invariant site at the E-dimer interface, including the exposed main chain of the E fusion loop and the two conserved glycan chains. This 'E-dimer-dependent epitope' is also the binding site for the viral glycoprotein prM during virus maturation in the secretory pathway of the infected cell, explaining its conservation across serotypes and highlighting an Achilles' heel of the virus with respect to antibody neutralization. These findings will be instrumental for devising novel immunogens to protect simultaneously against all four serotypes of dengue virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rouvinski, Alexander -- Guardado-Calvo, Pablo -- Barba-Spaeth, Giovanna -- Duquerroy, Stephane -- Vaney, Marie-Christine -- Kikuti, Carlos M -- Navarro Sanchez, M Erika -- Dejnirattisai, Wanwisa -- Wongwiwat, Wiyada -- Haouz, Ahmed -- Girard-Blanc, Christine -- Petres, Stephane -- Shepard, William E -- Despres, Philippe -- Arenzana-Seisdedos, Fernando -- Dussart, Philippe -- Mongkolsapaya, Juthathip -- Screaton, Gavin R -- Rey, Felix A -- 095541/Wellcome Trust/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2015 Apr 2;520(7545):109-13. doi: 10.1038/nature14130. Epub 2015 Jan 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Institut Pasteur, Departement de Virologie, Unite de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France. ; 1] Institut Pasteur, Departement de Virologie, Unite de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France [3] Universite Paris-Sud, Faculte des Sciences, 91405 Orsay, France. ; Division of Immunology and Inflammation, Department of Medicine, Hammersmith Hospital Campus, Imperial College London, London W12 0NN, UK. ; Institut Pasteur, Proteopole, CNRS UMR 3528, 75724 Paris Cedex 15, France. ; Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, BP48, 91192 Gif-sur-Yvette, France. ; Institut Pasteur, Departement de Virologie, Unite des Interactions Moleculaires Flavivirus-Hotes, 75724 Paris Cedex 15, France. ; Institut Pasteur, Departement de Virologie, Unite de Pathogenie Virale, INSERM U1108, 75724 Paris Cedex 15, France. ; Institut Pasteur de Guyane, BP 6010, 97306 Cayenne, French Guiana. ; 1] Division of Immunology and Inflammation, Department of Medicine, Hammersmith Hospital Campus, Imperial College London, London W12 0NN, UK [2] Dengue Hemorrhagic Fever Research Unit, Office for Research and Development, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand. ; 1] Institut Pasteur, Departement de Virologie, Unite de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France [3] Institut Pasteur, Proteopole, CNRS UMR 3528, 75724 Paris Cedex 15, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25581790" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Neutralizing/*chemistry/genetics/*immunology ; Antibodies, Viral/*chemistry/genetics/*immunology ; Cross Reactions/immunology ; Crystallography, X-Ray ; Dengue Virus/*chemistry/classification/*immunology ; Epitopes/chemistry/immunology ; Humans ; Models, Molecular ; Molecular Sequence Data ; Mutation/genetics ; Protein Conformation ; Protein Multimerization ; Solubility ; Species Specificity ; Viral Envelope Proteins/chemistry/immunology
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  • 78
    Publication Date: 2015-06-09
    Description: Lipid mediators influence immunity in myriad ways. For example, circulating sphingosine-1-phosphate (S1P) is a key regulator of lymphocyte egress. Although the majority of plasma S1P is bound to apolipoprotein M (ApoM) in the high-density lipoprotein (HDL) particle, the immunological functions of the ApoM-S1P complex are unknown. Here we show that ApoM-S1P is dispensable for lymphocyte trafficking yet restrains lymphopoiesis by activating the S1P1 receptor on bone marrow lymphocyte progenitors. Mice that lacked ApoM (Apom(-/-)) had increased proliferation of Lin(-) Sca-1(+) cKit(+) haematopoietic progenitor cells (LSKs) and common lymphoid progenitors (CLPs) in bone marrow. Pharmacological activation or genetic overexpression of S1P1 suppressed LSK and CLP cell proliferation in vivo. ApoM was stably associated with bone marrow CLPs, which showed active S1P1 signalling in vivo. Moreover, ApoM-bound S1P, but not albumin-bound S1P, inhibited lymphopoiesis in vitro. Upon immune stimulation, Apom(-/-) mice developed more severe experimental autoimmune encephalomyelitis, characterized by increased lymphocytes in the central nervous system and breakdown of the blood-brain barrier. Thus, the ApoM-S1P-S1P1 signalling axis restrains the lymphocyte compartment and, subsequently, adaptive immune responses. Unique biological functions imparted by specific S1P chaperones could be exploited for novel therapeutic opportunities.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506268/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506268/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blaho, Victoria A -- Galvani, Sylvain -- Engelbrecht, Eric -- Liu, Catherine -- Swendeman, Steven L -- Kono, Mari -- Proia, Richard L -- Steinman, Lawrence -- Han, May H -- Hla, Timothy -- F32 CA14211/CA/NCI NIH HHS/ -- F32 CA142117/CA/NCI NIH HHS/ -- HL67330/HL/NHLBI NIH HHS/ -- HL70694/HL/NHLBI NIH HHS/ -- HL89934/HL/NHLBI NIH HHS/ -- P01 HL070694/HL/NHLBI NIH HHS/ -- P20 RR017677/RR/NCRR NIH HHS/ -- P30 CA138313/CA/NCI NIH HHS/ -- R01 HL089934/HL/NHLBI NIH HHS/ -- R37 HL067330/HL/NHLBI NIH HHS/ -- Z01 DK056014-02/Intramural NIH HHS/ -- Z01 DK056015-01/Intramural NIH HHS/ -- England -- Nature. 2015 Jul 16;523(7560):342-6. doi: 10.1038/nature14462. Epub 2015 Jun 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University, New York, New York 10065, USA [2] Brain and Mind Research Institute, Weill Medical College of Cornell University, New York, New York 10065, USA. ; Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University, New York, New York 10065, USA. ; Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, Maryland 20892, USA. ; Department of Neurology and Neurological Sciences, Stanford University, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26053123" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apolipoproteins/deficiency/genetics/*metabolism ; Blood-Brain Barrier/pathology ; Cell Movement ; Cell Proliferation/genetics ; Central Nervous System/immunology/metabolism/*pathology ; Encephalomyelitis, Autoimmune, ; Experimental/genetics/immunology/metabolism/pathology ; Female ; Fingolimod Hydrochloride/pharmacology ; Hematopoietic Stem Cells/cytology/metabolism ; Inflammation/immunology/metabolism/pathology ; Lipoproteins, HDL/*metabolism ; Lymphocytes/*cytology/immunology/*metabolism ; Lymphoid Progenitor Cells/cytology/metabolism ; *Lymphopoiesis ; Lysophospholipids/agonists/blood/genetics/*metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Protein Binding ; Receptors, Lysosphingolipid/metabolism ; Signal Transduction ; Sphingosine/agonists/*analogs & derivatives/blood/genetics/metabolism
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  • 79
    Publication Date: 2015-01-22
    Description: Genetically modified organisms (GMOs) are increasingly used in research and industrial systems to produce high-value pharmaceuticals, fuels and chemicals. Genetic isolation and intrinsic biocontainment would provide essential biosafety measures to secure these closed systems and enable safe applications of GMOs in open systems, which include bioremediation and probiotics. Although safeguards have been designed to control cell growth by essential gene regulation, inducible toxin switches and engineered auxotrophies, these approaches are compromised by cross-feeding of essential metabolites, leaked expression of essential genes, or genetic mutations. Here we describe the construction of a series of genomically recoded organisms (GROs) whose growth is restricted by the expression of multiple essential genes that depend on exogenously supplied synthetic amino acids (sAAs). We introduced a Methanocaldococcus jannaschii tRNA:aminoacyl-tRNA synthetase pair into the chromosome of a GRO derived from Escherichia coli that lacks all TAG codons and release factor 1, endowing this organism with the orthogonal translational components to convert TAG into a dedicated sense codon for sAAs. Using multiplex automated genome engineering, we introduced in-frame TAG codons into 22 essential genes, linking their expression to the incorporation of synthetic phenylalanine-derived amino acids. Of the 60 sAA-dependent variants isolated, a notable strain harbouring three TAG codons in conserved functional residues of MurG, DnaA and SerS and containing targeted tRNA deletions maintained robust growth and exhibited undetectable escape frequencies upon culturing approximately 10(11) cells on solid media for 7 days or in liquid media for 20 days. This is a significant improvement over existing biocontainment approaches. We constructed synthetic auxotrophs dependent on sAAs that were not rescued by cross-feeding in environmental growth assays. These auxotrophic GROs possess alternative genetic codes that impart genetic isolation by impeding horizontal gene transfer and now depend on the use of synthetic biochemical building blocks, advancing orthogonal barriers between engineered organisms and the environment.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4590768/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4590768/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rovner, Alexis J -- Haimovich, Adrian D -- Katz, Spencer R -- Li, Zhe -- Grome, Michael W -- Gassaway, Brandon M -- Amiram, Miriam -- Patel, Jaymin R -- Gallagher, Ryan R -- Rinehart, Jesse -- Isaacs, Farren J -- K01 DK089006/DK/NIDDK NIH HHS/ -- T32 GM007205/GM/NIGMS NIH HHS/ -- T32GM07205/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Feb 5;518(7537):89-93. doi: 10.1038/nature14095. Epub 2015 Jan 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520, USA [2] Systems Biology Institute, Yale University, West Haven, Connecticut 06516, USA. ; 1] Systems Biology Institute, Yale University, West Haven, Connecticut 06516, USA [2] Department of Cellular and Molecular Physiology, Yale University, New Haven, Connecticut 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25607356" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/*chemical synthesis/chemistry/metabolism/*pharmacology ; Amino Acyl-tRNA Synthetases/genetics/metabolism ; Catalytic Domain/genetics ; Codon/genetics ; Containment of Biohazards/*methods ; Culture Media/chemistry/pharmacology ; Environment ; Escherichia coli/cytology/*drug effects/*genetics/metabolism ; Escherichia coli Proteins/biosynthesis/chemistry/genetics/metabolism ; Evolution, Molecular ; Gene Transfer, Horizontal/genetics ; Genes, Essential/genetics ; Genetic Code/genetics ; Genetic Engineering/methods ; Genome, Bacterial/genetics ; Microbial Viability/*drug effects/genetics ; Molecular Sequence Data ; Organisms, Genetically Modified/genetics/growth & development/metabolism ; Peptide Termination Factors/genetics ; Phenylalanine/chemistry/metabolism ; Protein Multimerization/genetics ; RNA, Transfer/genetics ; Synthetic Biology/*methods
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  • 80
    Publication Date: 2015-01-07
    Description: Antibiotic resistance is spreading faster than the introduction of new compounds into clinical practice, causing a public health crisis. Most antibiotics were produced by screening soil microorganisms, but this limited resource of cultivable bacteria was overmined by the 1960s. Synthetic approaches to produce antibiotics have been unable to replace this platform. Uncultured bacteria make up approximately 99% of all species in external environments, and are an untapped source of new antibiotics. We developed several methods to grow uncultured organisms by cultivation in situ or by using specific growth factors. Here we report a new antibiotic that we term teixobactin, discovered in a screen of uncultured bacteria. Teixobactin inhibits cell wall synthesis by binding to a highly conserved motif of lipid II (precursor of peptidoglycan) and lipid III (precursor of cell wall teichoic acid). We did not obtain any mutants of Staphylococcus aureus or Mycobacterium tuberculosis resistant to teixobactin. The properties of this compound suggest a path towards developing antibiotics that are likely to avoid development of resistance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ling, Losee L -- Schneider, Tanja -- Peoples, Aaron J -- Spoering, Amy L -- Engels, Ina -- Conlon, Brian P -- Mueller, Anna -- Schaberle, Till F -- Hughes, Dallas E -- Epstein, Slava -- Jones, Michael -- Lazarides, Linos -- Steadman, Victoria A -- Cohen, Douglas R -- Felix, Cintia R -- Fetterman, K Ashley -- Millett, William P -- Nitti, Anthony G -- Zullo, Ashley M -- Chen, Chao -- Lewis, Kim -- AI085612/AI/NIAID NIH HHS/ -- T-RO1AI085585/AI/NIAID NIH HHS/ -- England -- Nature. 2015 Jan 22;517(7535):455-9. doi: 10.1038/nature14098. Epub 2015 Jan 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉NovoBiotic Pharmaceuticals, Cambridge, Massachusetts 02138, USA. ; 1] Institute of Medical Microbiology, Immunology and Parasitology-Pharmaceutical Microbiology Section, University of Bonn, Bonn 53115, Germany [2] German Centre for Infection Research (DZIF), Partner Site Bonn-Cologne, 53115 Bonn, Germany. ; Antimicrobial Discovery Center, Northeastern University, Department of Biology, Boston, Massachusetts 02115, USA. ; 1] German Centre for Infection Research (DZIF), Partner Site Bonn-Cologne, 53115 Bonn, Germany [2] Institute for Pharmaceutical Biology, University of Bonn, Bonn 53115, Germany. ; Department of Biology, Northeastern University, Boston, Massachusetts 02115, USA. ; Selcia, Ongar, Essex CM5 0GS, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25561178" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/biosynthesis/chemistry/isolation & ; purification/*pharmacology ; Betaproteobacteria/chemistry/genetics ; Biological Products/chemistry/isolation & purification/pharmacology ; Cell Wall/chemistry/drug effects/metabolism ; Depsipeptides/biosynthesis/chemistry/isolation & purification/*pharmacology ; Disease Models, Animal ; *Drug Resistance, Microbial/genetics ; Female ; Mice ; Microbial Sensitivity Tests ; Microbial Viability/*drug effects ; Molecular Sequence Data ; Multigene Family/genetics ; Mycobacterium tuberculosis/cytology/*drug effects/genetics ; Peptidoglycan/biosynthesis ; Staphylococcal Infections/drug therapy/microbiology ; Staphylococcus aureus/chemistry/cytology/*drug effects/genetics ; Teichoic Acids/biosynthesis ; Time Factors
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  • 81
    Publication Date: 2015-05-06
    Description: Knowledge of the structure and dynamics of RNA molecules is critical to understanding their many biological functions. Furthermore, synthetic RNAs have applications as therapeutics and molecular sensors. Both research and technological applications of RNA would be dramatically enhanced by methods that enable incorporation of modified or labelled nucleotides into specifically designated positions or regions of RNA. However, the synthesis of tens of milligrams of such RNAs using existing methods has been impossible. Here we develop a hybrid solid-liquid phase transcription method and automated robotic platform for the synthesis of RNAs with position-selective labelling. We demonstrate its use by successfully preparing various isotope- or fluorescently labelled versions of the 71-nucleotide aptamer domain of an adenine riboswitch for nuclear magnetic resonance spectroscopy or single-molecule Forster resonance energy transfer, respectively. Those RNAs include molecules that were selectively isotope-labelled in specific loops, linkers, a helix, several discrete positions, or a single internal position, as well as RNA molecules that were fluorescently labelled in and near kissing loops. These selectively labelled RNAs have the same fold as those transcribed using conventional methods, but they greatly simplify the interpretation of NMR spectra. The single-position isotope- and fluorescently labelled RNA samples reveal multiple conformational states of the adenine riboswitch. Lastly, we describe a robotic platform and the operation that automates this technology. Our selective labelling method may be useful for studying RNA structure and dynamics and for making RNA sensors for a variety of applications including cell-biological studies, substance detection, and disease diagnostics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Yu -- Holmstrom, Erik -- Zhang, Jinwei -- Yu, Ping -- Wang, Jinbu -- Dyba, Marzena A -- Chen, De -- Ying, Jinfa -- Lockett, Stephen -- Nesbitt, David J -- Ferre-D'Amare, Adrian R -- Sousa, Rui -- Stagno, Jason R -- Wang, Yun-Xing -- HHSN261200800001E/PHS HHS/ -- R01 GM052522/GM/NIGMS NIH HHS/ -- T32 GM-065103/GM/NIGMS NIH HHS/ -- Intramural NIH HHS/ -- England -- Nature. 2015 Jun 18;522(7556):368-72. doi: 10.1038/nature14352. Epub 2015 May 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Protein-Nucleic Acid Interaction Section, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, USA. ; JILA, National Institute of Standards and Technology and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA. ; Biochemistry and Biophysics Center, National Heart, Lung and Blood Institute, Bethesda, Maryland 20892, USA. ; Structural Biophysics Laboratory, Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, USA. ; Optical Microscopy and Analysis Laboratory, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, USA. ; Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Department of Biochemistry, University of Texas Health Science Center, San Antonio, Texas 78229, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25938715" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine/analysis/chemistry/metabolism ; Aptamers, Nucleotide/analysis/chemistry/metabolism ; Automation/methods ; Base Sequence ; Biosensing Techniques ; DNA/genetics/metabolism ; *Fluorescence ; Fluorescence Resonance Energy Transfer ; In Vitro Techniques ; Isotope Labeling/*methods ; Magnetic Resonance Spectroscopy ; Molecular Sequence Data ; Nucleic Acid Conformation ; RNA/analysis/*chemical synthesis/*chemistry/genetics ; Riboswitch/genetics ; Robotics ; Templates, Genetic ; Transcription, Genetic
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  • 82
    Publication Date: 2015-06-13
    Description: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4636083/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4636083/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lloyd, Kent -- Franklin, Craig -- Lutz, Cat -- Magnuson, Terry -- U24 DK092993/DK/NIDDK NIH HHS/ -- U42 OD010921/OD/NIH HHS/ -- U42 OD011175/OD/NIH HHS/ -- U42 OD012210/OD/NIH HHS/ -- U42 RR033193/RR/NCRR NIH HHS/ -- U54 HG006364/HG/NHGRI NIH HHS/ -- England -- Nature. 2015 Jun 11;522(7555):151-3. doi: 10.1038/522151a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Mutant Mouse Resource and Research Center (MMRRC) at the University of California, Davis, California, USA. ; MMRRC at the University of Missouri, Columbia, Missouri, USA. ; MMRRC at the Jackson Laboratory in Bar Harbor, Maine, USA. ; MMRRC at the University of North Carolina at Chapel Hill, North Carolina, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26062496" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Specimen Banks/*standards/*utilization ; DNA Mutational Analysis ; Disease Models, Animal ; Genetic Testing ; Genome/genetics ; Humans ; *Mice/classification/genetics/microbiology ; Mice, Inbred C57BL ; Microbiota/genetics ; Mutation/genetics ; Quality Control ; Reproducibility of Results
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  • 83
    Publication Date: 2015-12-18
    Description: Variant rs351855-G/A is a commonly occurring single-nucleotide polymorphism of coding regions in exon 9 of the fibroblast growth factor receptor FGFR4 (CD334) gene (c.1162G〉A). It results in an amino-acid change at codon 388 from glycine to arginine (p.Gly388Arg) in the transmembrane domain of the receptor. Despite compelling genetic evidence for the association of this common variant with cancers of the bone, breast, colon, prostate, skin, lung, head and neck, as well as soft-tissue sarcomas and non-Hodgkin lymphoma, the underlying biological mechanism has remained elusive. Here we show that substitution of the conserved glycine 388 residue to a charged arginine residue alters the transmembrane spanning segment and exposes a membrane-proximal cytoplasmic signal transducer and activator of transcription 3 (STAT3) binding site Y(390)-(P)XXQ(393). We demonstrate that such membrane-proximal STAT3 binding motifs in the germline of type I membrane receptors enhance STAT3 tyrosine phosphorylation by recruiting STAT3 proteins to the inner cell membrane. Remarkably, such germline variants frequently co-localize with somatic mutations in the Catalogue of Somatic Mutations in Cancer (COSMIC) database. Using Fgfr4 single nucleotide polymorphism knock-in mice and transgenic mouse models for breast and lung cancers, we validate the enhanced STAT3 signalling induced by the FGFR4 Arg388-variant in vivo. Thus, our findings elucidate the molecular mechanism behind the genetic association of rs351855 with accelerated cancer progression and suggest that germline variants of cell-surface molecules that recruit STAT3 to the inner cell membrane are a significant risk for cancer prognosis and disease progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ulaganathan, Vijay K -- Sperl, Bianca -- Rapp, Ulf R -- Ullrich, Axel -- HL-102923/HL/NHLBI NIH HHS/ -- HL-102924/HL/NHLBI NIH HHS/ -- HL-102925/HL/NHLBI NIH HHS/ -- HL-102926/HL/NHLBI NIH HHS/ -- HL-103010/HL/NHLBI NIH HHS/ -- England -- Nature. 2015 Dec 24;528(7583):570-4. doi: 10.1038/nature16449. Epub 2015 Dec 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Biochemistry, Department of Molecular Biology, Am Klopferspitz 18, 82152, Martinsried. Germany. ; Max Planck Institute for Heart and Lung Research, Molecular Mechanisms of Lung Cancer, Parkstrasse 1, 61231 Bad Nauheim, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26675719" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs/genetics ; Amino Acid Sequence ; Animals ; Binding Sites/genetics ; Breast Neoplasms/genetics/metabolism ; Cell Line ; Cell Membrane/*metabolism ; Disease Models, Animal ; Disease Progression ; Exons/genetics ; Female ; Gene Knock-In Techniques ; *Germ-Line Mutation ; Humans ; Lung Neoplasms/genetics/metabolism ; Male ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Phosphorylation ; Phosphotyrosine/metabolism ; Polymorphism, Single Nucleotide/genetics ; Receptor, Fibroblast Growth Factor, Type 4/chemistry/*genetics/*metabolism ; STAT3 Transcription Factor/*metabolism ; Signal Transduction
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  • 84
    Publication Date: 2015-09-30
    Description: Photoreceptor proteins enable organisms to sense and respond to light. The newly discovered CarH-type photoreceptors use a vitamin B12 derivative, adenosylcobalamin, as the light-sensing chromophore to mediate light-dependent gene regulation. Here we present crystal structures of Thermus thermophilus CarH in all three relevant states: in the dark, both free and bound to operator DNA, and after light exposure. These structures provide visualizations of how adenosylcobalamin mediates CarH tetramer formation in the dark, how this tetramer binds to the promoter -35 element to repress transcription, and how light exposure leads to a large-scale conformational change that activates transcription. In addition to the remarkable functional repurposing of adenosylcobalamin from an enzyme cofactor to a light sensor, we find that nature also repurposed two independent protein modules in assembling CarH. These results expand the biological role of vitamin B12 and provide fundamental insight into a new mode of light-dependent gene regulation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4634937/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4634937/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jost, Marco -- Fernandez-Zapata, Jesus -- Polanco, Maria Carmen -- Ortiz-Guerrero, Juan Manuel -- Chen, Percival Yang-Ting -- Kang, Gyunghoon -- Padmanabhan, S -- Elias-Arnanz, Montserrat -- Drennan, Catherine L -- GM069857/GM/NIGMS NIH HHS/ -- P41 GM103393/GM/NIGMS NIH HHS/ -- P41 GM103403/GM/NIGMS NIH HHS/ -- P41GM103393/GM/NIGMS NIH HHS/ -- P41GM103403/GM/NIGMS NIH HHS/ -- R01 GM069857/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Oct 22;526(7574):536-41. doi: 10.1038/nature14950. Epub 2015 Sep 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA. ; Instituto de Quimica Fisica "Rocasolano", Consejo Superior de Investigaciones Cientificas, 28006 Madrid, Spain. ; Department of Genetics and Microbiology, Area of Genetics (Unidad Asociada al Instituto de Quimica Fisica "Rocasolano", Consejo Superior de Investigaciones Cientificas), Faculty of Biology, Universidad de Murcia, Murcia 30100, Spain. ; Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA. ; Howard Hughes Medical Institute, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26416754" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacterial Proteins/*chemistry/*genetics/metabolism ; Base Sequence ; Cobamides/*metabolism/radiation effects ; Crystallography, X-Ray ; DNA, Bacterial/genetics/metabolism ; Darkness ; Dimerization ; *Gene Expression Regulation, Bacterial/radiation effects ; Light ; Models, Molecular ; Molecular Sequence Data ; Operator Regions, Genetic/genetics ; Promoter Regions, Genetic/genetics ; Protein Structure, Quaternary/radiation effects ; *Thermus thermophilus/chemistry/genetics/radiation effects ; Transcription, Genetic/genetics/radiation effects ; Vitamin B 12/*metabolism/radiation effects
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  • 85
    Publication Date: 2015-12-10
    Description: DNA repair by homologous recombination is highly suppressed in G1 cells to ensure that mitotic recombination occurs solely between sister chromatids. Although many homologous recombination factors are cell-cycle regulated, the identity of the events that are both necessary and sufficient to suppress recombination in G1 cells is unknown. Here we report that the cell cycle controls the interaction of BRCA1 with PALB2-BRCA2 to constrain BRCA2 function to the S/G2 phases in human cells. We found that the BRCA1-interaction site on PALB2 is targeted by an E3 ubiquitin ligase composed of KEAP1, a PALB2-interacting protein, in complex with cullin-3 (CUL3)-RBX1 (ref. 6). PALB2 ubiquitylation suppresses its interaction with BRCA1 and is counteracted by the deubiquitylase USP11, which is itself under cell cycle control. Restoration of the BRCA1-PALB2 interaction combined with the activation of DNA-end resection is sufficient to induce homologous recombination in G1, as measured by RAD51 recruitment, unscheduled DNA synthesis and a CRISPR-Cas9-based gene-targeting assay. We conclude that the mechanism prohibiting homologous recombination in G1 minimally consists of the suppression of DNA-end resection coupled with a multi-step block of the recruitment of BRCA2 to DNA damage sites that involves the inhibition of BRCA1-PALB2-BRCA2 complex assembly. We speculate that the ability to induce homologous recombination in G1 cells with defined factors could spur the development of gene-targeting applications in non-dividing cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Orthwein, Alexandre -- Noordermeer, Sylvie M -- Wilson, Marcus D -- Landry, Sebastien -- Enchev, Radoslav I -- Sherker, Alana -- Munro, Meagan -- Pinder, Jordan -- Salsman, Jayme -- Dellaire, Graham -- Xia, Bing -- Peter, Matthias -- Durocher, Daniel -- FDN143343/Canadian Institutes of Health Research/Canada -- MOP84260/Canadian Institutes of Health Research/Canada -- England -- Nature. 2015 Dec 17;528(7582):422-6. doi: 10.1038/nature16142. Epub 2015 Dec 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, 600 University Avenue, Toronto, Ontario M5G 1X5, Canada. ; ETH Zurich, Institute of Biochemistry, Department of Biology, Otto-Stern-Weg 3, CH-8093 Zurich, Switzerland. ; Department of Molecular Genetics, University of Toronto, Ontario M5S 3E1, Canada. ; Departments of Pathology and Biochemistry &Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada. ; Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey and Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26649820" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; BRCA1 Protein/metabolism ; BRCA2 Protein/metabolism ; CRISPR-Cas Systems/genetics ; Carrier Proteins/metabolism ; Cell Line ; Cullin Proteins/metabolism ; DNA/metabolism ; DNA Damage ; DNA Repair ; *G1 Phase ; G2 Phase ; Gene Targeting ; *Homologous Recombination ; Humans ; Intracellular Signaling Peptides and Proteins/metabolism ; Molecular Sequence Data ; Multiprotein Complexes/chemistry/metabolism ; Nuclear Proteins/chemistry/metabolism ; Protein Binding ; Rad51 Recombinase/metabolism ; S Phase ; Thiolester Hydrolases/metabolism ; Tumor Suppressor Proteins/chemistry/metabolism ; Ubiquitin-Protein Ligases/metabolism ; Ubiquitination
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  • 86
    Publication Date: 2015-03-13
    Description: Disruption of the MECP2 gene leads to Rett syndrome (RTT), a severe neurological disorder with features of autism. MECP2 encodes a methyl-DNA-binding protein that has been proposed to function as a transcriptional repressor, but despite numerous mouse studies examining neuronal gene expression in Mecp2 mutants, no clear model has emerged for how MeCP2 protein regulates transcription. Here we identify a genome-wide length-dependent increase in gene expression in MeCP2 mutant mouse models and human RTT brains. We present evidence that MeCP2 represses gene expression by binding to methylated CA sites within long genes, and that in neurons lacking MeCP2, decreasing the expression of long genes attenuates RTT-associated cellular deficits. In addition, we find that long genes as a population are enriched for neuronal functions and selectively expressed in the brain. These findings suggest that mutations in MeCP2 may cause neurological dysfunction by specifically disrupting long gene expression in the brain.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4480648/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4480648/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gabel, Harrison W -- Kinde, Benyam -- Stroud, Hume -- Gilbert, Caitlin S -- Harmin, David A -- Kastan, Nathaniel R -- Hemberg, Martin -- Ebert, Daniel H -- Greenberg, Michael E -- 1R01NS048276/NS/NINDS NIH HHS/ -- P30 HD018655/HD/NICHD NIH HHS/ -- R01 NS048276/NS/NINDS NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- T32GM007753/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Jun 4;522(7554):89-93. doi: 10.1038/nature14319. Epub 2015 Mar 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Department of Ophthalmology, Children's Hospital Boston, Center for Brain Science and Swartz Center for Theoretical Neuroscience, Harvard University, 300 Longwood Avenue, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25762136" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Brain/metabolism ; DNA (Cytosine-5-)-Methyltransferase/metabolism ; DNA Methylation/*genetics ; Disease Models, Animal ; Female ; Gene Expression Regulation ; Humans ; Male ; Methyl-CpG-Binding Protein 2/deficiency/*genetics/*metabolism ; Mice ; Molecular Sequence Data ; Mutation/*genetics ; Neurons/metabolism ; Rett Syndrome/*genetics
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  • 87
    Publication Date: 2015-02-06
    Description: Glutamate transporters terminate neurotransmission by clearing synaptically released glutamate from the extracellular space, allowing repeated rounds of signalling and preventing glutamate-mediated excitotoxicity. Crystallographic studies of a glutamate transporter homologue from the archaeon Pyrococcus horikoshii, GltPh, showed that distinct transport domains translocate substrates into the cytoplasm by moving across the membrane within a central trimerization scaffold. Here we report direct observations of these 'elevator-like' transport domain motions in the context of reconstituted proteoliposomes and physiological ion gradients using single-molecule fluorescence resonance energy transfer (smFRET) imaging. We show that GltPh bearing two mutations introduced to impart characteristics of the human transporter exhibits markedly increased transport domain dynamics, which parallels an increased rate of substrate transport, thereby establishing a direct temporal relationship between transport domain motion and substrate uptake. Crystallographic and computational investigations corroborated these findings by revealing that the 'humanizing' mutations favour structurally 'unlocked' intermediate states in the transport cycle exhibiting increased solvent occupancy at the interface between the transport domain and the trimeric scaffold.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4351760/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4351760/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Akyuz, Nurunisa -- Georgieva, Elka R -- Zhou, Zhou -- Stolzenberg, Sebastian -- Cuendet, Michel A -- Khelashvili, George -- Altman, Roger B -- Terry, Daniel S -- Freed, Jack H -- Weinstein, Harel -- Boudker, Olga -- Blanchard, Scott C -- 5U54GM087519/GM/NIGMS NIH HHS/ -- P01DA012408/DA/NIDA NIH HHS/ -- P41 GM103521/GM/NIGMS NIH HHS/ -- P41GM103521/GM/NIGMS NIH HHS/ -- R01 EB003150/EB/NIBIB NIH HHS/ -- R01 GM025862/GM/NIGMS NIH HHS/ -- R01 GM098859/GM/NIGMS NIH HHS/ -- R010EB003150/EB/NIBIB NIH HHS/ -- R01GM098859/GM/NIGMS NIH HHS/ -- R21MH099491/MH/NIMH NIH HHS/ -- R37 NS085318/NS/NINDS NIH HHS/ -- England -- Nature. 2015 Feb 5;518(7537):68-73. doi: 10.1038/nature14158.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology and Biophysics, Weill Cornell Medical College, Cornell University, 1300 York Avenue, New York, New York 10065, USA. ; 1] National Biomedical Center for Advanced ESR Technology, Cornell University, Ithaca, New York 14853, USA [2] Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA. ; 1] Department of Physiology and Biophysics, Weill Cornell Medical College, Cornell University, 1300 York Avenue, New York, New York 10065, USA [2] Swiss Institute of Bioinformatics, Quartier Sorge - Batiment Genopode, 1015 Lausanne, Switzerland. ; 1] Department of Physiology and Biophysics, Weill Cornell Medical College, Cornell University, 1300 York Avenue, New York, New York 10065, USA [2] HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine, Weill Cornell Medical College, Cornell University, 1305 York Avenue, New York, New York 10065, USA. ; 1] Department of Physiology and Biophysics, Weill Cornell Medical College, Cornell University, 1300 York Avenue, New York, New York 10065, USA [2] Tri-Institutional Training Program in Chemical Biology, 445 East 69th Street, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25652997" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Transport Systems, Acidic/*chemistry/genetics/*metabolism ; Aspartic Acid/*metabolism ; Biological Transport ; Crystallography, X-Ray ; Detergents ; Fluorescence Resonance Energy Transfer ; Humans ; Kinetics ; Ligands ; Models, Molecular ; Molecular Dynamics Simulation ; Molecular Sequence Data ; Movement ; Mutant Proteins/chemistry/genetics/metabolism ; Mutation/genetics ; Protein Stability ; Protein Structure, Tertiary ; Proteolipids/metabolism ; Pyrococcus horikoshii/*chemistry ; Sodium/metabolism ; Solvents ; Thermodynamics
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  • 88
    Publication Date: 2015-03-26
    Description: Congenital heart disease (CHD) is the most prevalent birth defect, affecting nearly 1% of live births; the incidence of CHD is up to tenfold higher in human fetuses. A genetic contribution is strongly suggested by the association of CHD with chromosome abnormalities and high recurrence risk. Here we report findings from a recessive forward genetic screen in fetal mice, showing that cilia and cilia-transduced cell signalling have important roles in the pathogenesis of CHD. The cilium is an evolutionarily conserved organelle projecting from the cell surface with essential roles in diverse cellular processes. Using echocardiography, we ultrasound scanned 87,355 chemically mutagenized C57BL/6J fetal mice and recovered 218 CHD mouse models. Whole-exome sequencing identified 91 recessive CHD mutations in 61 genes. This included 34 cilia-related genes, 16 genes involved in cilia-transduced cell signalling, and 10 genes regulating vesicular trafficking, a pathway important for ciliogenesis and cell signalling. Surprisingly, many CHD genes encoded interacting proteins, suggesting that an interactome protein network may provide a larger genomic context for CHD pathogenesis. These findings provide novel insights into the potential Mendelian genetic contribution to CHD in the fetal population, a segment of the human population not well studied. We note that the pathways identified show overlap with CHD candidate genes recovered in CHD patients, suggesting that they may have relevance to the more complex genetics of CHD overall. These CHD mouse models and 〉8,000 incidental mutations have been sperm archived, creating a rich public resource for human disease modelling.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4617540/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4617540/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, You -- Klena, Nikolai T -- Gabriel, George C -- Liu, Xiaoqin -- Kim, Andrew J -- Lemke, Kristi -- Chen, Yu -- Chatterjee, Bishwanath -- Devine, William -- Damerla, Rama Rao -- Chang, Chienfu -- Yagi, Hisato -- San Agustin, Jovenal T -- Thahir, Mohamed -- Anderton, Shane -- Lawhead, Caroline -- Vescovi, Anita -- Pratt, Herbert -- Morgan, Judy -- Haynes, Leslie -- Smith, Cynthia L -- Eppig, Janan T -- Reinholdt, Laura -- Francis, Richard -- Leatherbury, Linda -- Ganapathiraju, Madhavi K -- Tobita, Kimimasa -- Pazour, Gregory J -- Lo, Cecilia W -- HG000330/HG/NHGRI NIH HHS/ -- R01 GM060992/GM/NIGMS NIH HHS/ -- R01MH094564/MH/NIMH NIH HHS/ -- U01 HL098180/HL/NHLBI NIH HHS/ -- U01HL098180/HL/NHLBI NIH HHS/ -- U01HL098188/HL/NHLBI NIH HHS/ -- England -- Nature. 2015 May 28;521(7553):520-4. doi: 10.1038/nature14269. Epub 2015 Mar 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15201, USA. ; Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261, USA. ; Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA. ; 1] Department of Biomedical Informatics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15206, USA [2] Intelligent Systems Program, School of Arts and Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania 16260, USA. ; The Jackson Laboratory, Bar Harbor, Maine 04609, USA. ; The Heart Center, Children's National Medical Center, Washington DC 20010, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25807483" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cilia/genetics/*pathology/physiology/ultrasonography ; DNA Mutational Analysis ; Electrocardiography ; Exome/genetics ; Genes, Recessive ; Genetic Testing ; Heart Defects, Congenital/*genetics/*pathology/ultrasonography ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Mutation/genetics ; Signal Transduction
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  • 89
    Publication Date: 2015-07-02
    Description: Lenalidomide is a highly effective treatment for myelodysplastic syndrome (MDS) with deletion of chromosome 5q (del(5q)). Here, we demonstrate that lenalidomide induces the ubiquitination of casein kinase 1A1 (CK1alpha) by the E3 ubiquitin ligase CUL4-RBX1-DDB1-CRBN (known as CRL4(CRBN)), resulting in CK1alpha degradation. CK1alpha is encoded by a gene within the common deleted region for del(5q) MDS and haploinsufficient expression sensitizes cells to lenalidomide therapy, providing a mechanistic basis for the therapeutic window of lenalidomide in del(5q) MDS. We found that mouse cells are resistant to lenalidomide but that changing a single amino acid in mouse Crbn to the corresponding human residue enables lenalidomide-dependent degradation of CK1alpha. We further demonstrate that minor side chain modifications in thalidomide and a novel analogue, CC-122, can modulate the spectrum of substrates targeted by CRL4(CRBN). These findings have implications for the clinical activity of lenalidomide and related compounds, and demonstrate the therapeutic potential of novel modulators of E3 ubiquitin ligases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kronke, Jan -- Fink, Emma C -- Hollenbach, Paul W -- MacBeth, Kyle J -- Hurst, Slater N -- Udeshi, Namrata D -- Chamberlain, Philip P -- Mani, D R -- Man, Hon Wah -- Gandhi, Anita K -- Svinkina, Tanya -- Schneider, Rebekka K -- McConkey, Marie -- Jaras, Marcus -- Griffiths, Elizabeth -- Wetzler, Meir -- Bullinger, Lars -- Cathers, Brian E -- Carr, Steven A -- Chopra, Rajesh -- Ebert, Benjamin L -- P01 CA066996/CA/NCI NIH HHS/ -- P01CA108631/CA/NCI NIH HHS/ -- R01 HL082945/HL/NHLBI NIH HHS/ -- R01HL082945/HL/NHLBI NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- T32GM007753/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Jul 9;523(7559):183-8. doi: 10.1038/nature14610. Epub 2015 Jul 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Brigham and Women's Hospital, Division of Hematology, Boston, Massachusetts 02115, USA [2] University Hospital of Ulm, Department of Internal Medicine III, 89081 Ulm, Germany [3] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA. ; 1] Brigham and Women's Hospital, Division of Hematology, Boston, Massachusetts 02115, USA [2] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA. ; Celgene Corporation, San Diego, California 92121, USA. ; Brigham and Women's Hospital, Division of Hematology, Boston, Massachusetts 02115, USA. ; Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA. ; Roswell Park Cancer Institute, Buffalo, New York 14263, USA. ; University Hospital of Ulm, Department of Internal Medicine III, 89081 Ulm, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26131937" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Casein Kinase I/genetics/*metabolism ; Cell Line ; Gene Expression Regulation/drug effects ; HEK293 Cells ; Humans ; Immunologic Factors/pharmacology ; Jurkat Cells ; K562 Cells ; Mice ; Molecular Sequence Data ; Myelodysplastic Syndromes/*genetics/*physiopathology ; Peptide Hydrolases/chemistry ; Proteolysis/drug effects ; Sequence Alignment ; Sequence Deletion ; Species Specificity ; Thalidomide/*analogs & derivatives/pharmacology ; Ubiquitin-Protein Ligases/metabolism ; Ubiquitination/*drug effects
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  • 90
    Publication Date: 2015-02-06
    Description: The strength of synaptic connections fundamentally determines how neurons influence each other's firing. Excitatory connection amplitudes between pairs of cortical neurons vary over two orders of magnitude, comprising only very few strong connections among many weaker ones. Although this highly skewed distribution of connection strengths is observed in diverse cortical areas, its functional significance remains unknown: it is not clear how connection strength relates to neuronal response properties, nor how strong and weak inputs contribute to information processing in local microcircuits. Here we reveal that the strength of connections between layer 2/3 (L2/3) pyramidal neurons in mouse primary visual cortex (V1) obeys a simple rule--the few strong connections occur between neurons with most correlated responses, while only weak connections link neurons with uncorrelated responses. Moreover, we show that strong and reciprocal connections occur between cells with similar spatial receptive field structure. Although weak connections far outnumber strong connections, each neuron receives the majority of its local excitation from a small number of strong inputs provided by the few neurons with similar responses to visual features. By dominating recurrent excitation, these infrequent yet powerful inputs disproportionately contribute to feature preference and selectivity. Therefore, our results show that the apparently complex organization of excitatory connection strength reflects the similarity of neuronal responses, and suggest that rare, strong connections mediate stimulus-specific response amplification in cortical microcircuits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cossell, Lee -- Iacaruso, Maria Florencia -- Muir, Dylan R -- Houlton, Rachael -- Sader, Elie N -- Ko, Ho -- Hofer, Sonja B -- Mrsic-Flogel, Thomas D -- 095074/Wellcome Trust/United Kingdom -- England -- Nature. 2015 Feb 19;518(7539):399-403. doi: 10.1038/nature14182. Epub 2015 Feb 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Neuroscience, Physiology and Pharmacology, University College London, 21 University Street, London WC1E 6DE, UK [2] Biozentrum, University of Basel, Klingelbergstrasse 50/70, CH - 4056 Basel, Switzerland. ; Biozentrum, University of Basel, Klingelbergstrasse 50/70, CH - 4056 Basel, Switzerland. ; Department of Neuroscience, Physiology and Pharmacology, University College London, 21 University Street, London WC1E 6DE, UK. ; 1] Department of Neuroscience, Physiology and Pharmacology, University College London, 21 University Street, London WC1E 6DE, UK [2] Lui Che Woo Institute of Innovative Medicine and Chow Yuk Ho Technology Center for Innovative Medicine, Faculty of Medicine, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25652823" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Excitatory Postsynaptic Potentials/*physiology ; Female ; Male ; Mice ; Mice, Inbred C57BL ; Models, Neurological ; Neural Pathways ; Photic Stimulation ; Pyramidal Cells/cytology/physiology ; Synapses/*physiology ; Visual Cortex/*cytology/*physiology
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  • 91
    Publication Date: 2015-09-17
    Description: Enhancers, critical determinants of cellular identity, are commonly recognized by correlative chromatin marks and gain-of-function potential, although only loss-of-function studies can demonstrate their requirement in the native genomic context. Previously, we identified an erythroid enhancer of human BCL11A, subject to common genetic variation associated with the fetal haemoglobin level, the mouse orthologue of which is necessary for erythroid BCL11A expression. Here we develop pooled clustered regularly interspaced palindromic repeat (CRISPR)-Cas9 guide RNA libraries to perform in situ saturating mutagenesis of the human and mouse enhancers. This approach reveals critical minimal features and discrete vulnerabilities of these enhancers. Despite conserved function of the composite enhancers, their architecture diverges. The crucial human sequences appear to be primate-specific. Through editing of primary human progenitors and mouse transgenesis, we validate the BCL11A erythroid enhancer as a target for fetal haemoglobin reinduction. The detailed enhancer map will inform therapeutic genome editing, and the screening approach described here is generally applicable to functional interrogation of non-coding genomic elements.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4644101/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4644101/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Canver, Matthew C -- Smith, Elenoe C -- Sher, Falak -- Pinello, Luca -- Sanjana, Neville E -- Shalem, Ophir -- Chen, Diane D -- Schupp, Patrick G -- Vinjamur, Divya S -- Garcia, Sara P -- Luc, Sidinh -- Kurita, Ryo -- Nakamura, Yukio -- Fujiwara, Yuko -- Maeda, Takahiro -- Yuan, Guo-Cheng -- Zhang, Feng -- Orkin, Stuart H -- Bauer, Daniel E -- 5DP1-MH100706/DP/NCCDPHP CDC HHS/ -- 5R01-DK097768/DK/NIDDK NIH HHS/ -- F30DK103359-01A1/DK/NIDDK NIH HHS/ -- K08DK093705/DK/NIDDK NIH HHS/ -- K99 HG008171/HG/NHGRI NIH HHS/ -- K99-HG008171/HG/NHGRI NIH HHS/ -- K99HG008399/HG/NHGRI NIH HHS/ -- P01 HL032262/HL/NHLBI NIH HHS/ -- P01HL032262/HL/NHLBI NIH HHS/ -- P30DK049216/DK/NIDDK NIH HHS/ -- R01 A1084905/PHS HHS/ -- R01 HL032259/HL/NHLBI NIH HHS/ -- R01HG005085/HG/NHGRI NIH HHS/ -- R01HL119099/HL/NHLBI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Nov 12;527(7577):192-7. doi: 10.1038/nature15521. Epub 2015 Sep 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute and Harvard School of Public Health, Boston, Massachusetts 02115, USA. ; Broad Institute of MIT and Harvard, McGovern Institute for Brain Research, Department of Brain and Cognitive Sciences and Department of Biological Engineering, MIT, Cambridge, Massachusetts 02142, USA. ; Cell Engineering Division, RIKEN BioResource Center, Tsukuba, Ibaraki 305-0074, Japan. ; Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan. ; Howard Hughes Medical Institute, Boston, Massachusetts 02115, USA. ; Division of Hematology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26375006" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; CRISPR-Associated Proteins/*metabolism ; CRISPR-Cas Systems/genetics ; Carrier Proteins/*genetics ; Cells, Cultured ; Clustered Regularly Interspaced Short Palindromic Repeats/genetics ; Enhancer Elements, Genetic/*genetics ; Erythroblasts/metabolism ; Fetal Hemoglobin/genetics ; *Genetic Engineering ; Genome/genetics ; Humans ; Mice ; Molecular Sequence Data ; Mutagenesis/*genetics ; Nuclear Proteins/*genetics ; Organ Specificity ; RNA, Guide/genetics ; Reproducibility of Results ; Species Specificity
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  • 92
    Publication Date: 2015-04-10
    Description: HIV-1 immunotherapy with a combination of first generation monoclonal antibodies was largely ineffective in pre-clinical and clinical settings and was therefore abandoned. However, recently developed single-cell-based antibody cloning methods have uncovered a new generation of far more potent broadly neutralizing antibodies to HIV-1 (refs 4, 5). These antibodies can prevent infection and suppress viraemia in humanized mice and nonhuman primates, but their potential for human HIV-1 immunotherapy has not been evaluated. Here we report the results of a first-in-man dose escalation phase 1 clinical trial of 3BNC117, a potent human CD4 binding site antibody, in uninfected and HIV-1-infected individuals. 3BNC117 infusion was well tolerated and demonstrated favourable pharmacokinetics. A single 30 mg kg(-1) infusion of 3BNC117 reduced the viral load in HIV-1-infected individuals by 0.8-2.5 log10 and viraemia remained significantly reduced for 28 days. Emergence of resistant viral strains was variable, with some individuals remaining sensitive to 3BNC117 for a period of 28 days. We conclude that, as a single agent, 3BNC117 is safe and effective in reducing HIV-1 viraemia, and that immunotherapy should be explored as a new modality for HIV-1 prevention, therapy and cure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Caskey, Marina -- Klein, Florian -- Lorenzi, Julio C C -- Seaman, Michael S -- West, Anthony P Jr -- Buckley, Noreen -- Kremer, Gisela -- Nogueira, Lilian -- Braunschweig, Malte -- Scheid, Johannes F -- Horwitz, Joshua A -- Shimeliovich, Irina -- Ben-Avraham, Sivan -- Witmer-Pack, Maggi -- Platten, Martin -- Lehmann, Clara -- Burke, Leah A -- Hawthorne, Thomas -- Gorelick, Robert J -- Walker, Bruce D -- Keler, Tibor -- Gulick, Roy M -- Fatkenheuer, Gerd -- Schlesinger, Sarah J -- Nussenzweig, Michel C -- HHSN261200800001E/PHS HHS/ -- U19AI111825-01/AI/NIAID NIH HHS/ -- UL1 TR000043/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Jun 25;522(7557):487-91. doi: 10.1038/nature14411. Epub 2015 Apr 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunology, The Rockefeller University, New York, New York 10065, USA. ; Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA. ; Division of Biology, California Institute of Technology, Pasadena, California 91125, USA. ; 1] First Department of Internal Medicine, University Hospital of Cologne, D-50924 Cologne, Germany [2] Clinical Trials Center Cologne, ZKS Koln, BMBF 01KN1106, University of Cologne, Cologne, Germany. ; 1] Laboratory of Molecular Immunology, The Rockefeller University, New York, New York 10065, USA [2] Albert Ludwigs University of Freiburg, 79085 Freiburg, Germany. ; 1] First Department of Internal Medicine, University Hospital of Cologne, D-50924 Cologne, Germany [2] German Center for Infection Research (DZIF), partner site Bonn-Cologne, Cologne, Germany. ; 1] Laboratory of Molecular Immunology, The Rockefeller University, New York, New York 10065, USA [2] Division of Infectious Diseases, Weill Medical College of Cornell University, New York, New York 10065, USA. ; Celldex Therapeutics, Inc., Hampton, New Jersey 08827, USA. ; AIDS and Cancer Virus Program, Leidos Biomedical Research, Frederick, Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, USA. ; Ragon Institute of MGH, MIT and Harvard, Howard Hughes Medical Institute, Massachusetts General Hospital and Harvard Medical School, Cambridge, Massachusetts 02139, USA. ; Division of Infectious Diseases, Weill Medical College of Cornell University, New York, New York 10065, USA. ; 1] Laboratory of Molecular Immunology, The Rockefeller University, New York, New York 10065, USA [2] Howard Hughes Medical Institute, The Rockefeller University, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25855300" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Amino Acid Sequence ; Antibodies, Monoclonal/administration & ; dosage/immunology/pharmacokinetics/therapeutic use ; Antibodies, Neutralizing/administration & dosage/adverse ; effects/*immunology/pharmacology/therapeutic use ; Antigens, CD4/metabolism ; Binding Sites ; Case-Control Studies ; Evolution, Molecular ; Female ; HIV Antibodies/administration & dosage/adverse ; effects/*immunology/pharmacology/therapeutic use ; HIV Envelope Protein gp120/chemistry/immunology ; HIV Infections/immunology/*therapy/virology ; HIV-1/chemistry/drug effects/*immunology ; Humans ; Immunization, Passive/methods ; Male ; Middle Aged ; Molecular Sequence Data ; Time Factors ; Viral Load/drug effects/*immunology ; Viremia/immunology/*therapy/virology ; Young Adult
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  • 93
    Publication Date: 2014-10-09
    Description: The human immunodeficiency virus type 1 (HIV-1) envelope (Env) spike, comprising three gp120 and three gp41 subunits, is a conformational machine that facilitates HIV-1 entry by rearranging from a mature unliganded state, through receptor-bound intermediates, to a post-fusion state. As the sole viral antigen on the HIV-1 virion surface, Env is both the target of neutralizing antibodies and a focus of vaccine efforts. Here we report the structure at 3.5 A resolution for an HIV-1 Env trimer captured in a mature closed state by antibodies PGT122 and 35O22. This structure reveals the pre-fusion conformation of gp41, indicates rearrangements needed for fusion activation, and defines parameters of immune evasion and immune recognition. Pre-fusion gp41 encircles amino- and carboxy-terminal strands of gp120 with four helices that form a membrane-proximal collar, fastened by insertion of a fusion peptide-proximal methionine into a gp41-tryptophan clasp. Spike rearrangements required for entry involve opening the clasp and expelling the termini. N-linked glycosylation and sequence-variable regions cover the pre-fusion closed spike; we used chronic cohorts to map the prevalence and location of effective HIV-1-neutralizing responses, which were distinguished by their recognition of N-linked glycan and tolerance for epitope-sequence variation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4348022/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4348022/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pancera, Marie -- Zhou, Tongqing -- Druz, Aliaksandr -- Georgiev, Ivelin S -- Soto, Cinque -- Gorman, Jason -- Huang, Jinghe -- Acharya, Priyamvada -- Chuang, Gwo-Yu -- Ofek, Gilad -- Stewart-Jones, Guillaume B E -- Stuckey, Jonathan -- Bailer, Robert T -- Joyce, M Gordon -- Louder, Mark K -- Tumba, Nancy -- Yang, Yongping -- Zhang, Baoshan -- Cohen, Myron S -- Haynes, Barton F -- Mascola, John R -- Morris, Lynn -- Munro, James B -- Blanchard, Scott C -- Mothes, Walther -- Connors, Mark -- Kwong, Peter D -- AI0678501/AI/NIAID NIH HHS/ -- AI100645/AI/NIAID NIH HHS/ -- P01 GM056550/GM/NIGMS NIH HHS/ -- P01-GM56550/GM/NIGMS NIH HHS/ -- P30 AI050410/AI/NIAID NIH HHS/ -- R01 GM098859/GM/NIGMS NIH HHS/ -- R01-GM098859/GM/NIGMS NIH HHS/ -- R21 AI100696/AI/NIAID NIH HHS/ -- R21-AI100696/AI/NIAID NIH HHS/ -- UL1 TR000142/TR/NCATS NIH HHS/ -- UM1 AI100645/AI/NIAID NIH HHS/ -- ZIA AI005023-13/Intramural NIH HHS/ -- ZIA AI005024-13/Intramural NIH HHS/ -- England -- Nature. 2014 Oct 23;514(7523):455-61. doi: 10.1038/nature13808. Epub 2014 Oct 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA. ; HIV-Specific Immunity Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Center for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service (NHLS), Sandringham, Johannesburg 2131, South Africa. ; Departments of Medicine, Epidemiology, Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA. ; Duke University Human Vaccine Institute, Departments of Medicine, Surgery, Pediatrics and Immunology, Duke University School of Medicine, and the Center for HIV/AIDS Vaccine Immunology-Immunogen Discovery at Duke University, Durham, North Carolina 27710, USA. ; 1] Center for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service (NHLS), Sandringham, Johannesburg 2131, South Africa [2] University of the Witwatersrand, Braamfontein, Johannesburg 2000, South Africa [3] Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban 4041, South Africa. ; Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut 06536, USA. ; Department of Physiology and Biophysics, Weill Cornell Medical College of Cornell University, New York, New York 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25296255" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Vaccines/chemistry/immunology ; Amino Acid Sequence ; Antibodies, Neutralizing/immunology ; Cohort Studies ; Crystallography, X-Ray ; Genetic Variation ; Glycosylation ; HIV Antibodies/immunology ; HIV Envelope Protein gp120/*chemistry/genetics/*immunology ; HIV Envelope Protein gp41/*chemistry/genetics/*immunology ; HIV Infections/immunology ; Humans ; Immune Evasion ; Membrane Fusion ; Models, Molecular ; Molecular Sequence Data ; Polysaccharides/chemistry/immunology ; Protein Multimerization ; Protein Structure, Quaternary ; Protein Subunits/chemistry/genetics/immunology ; Structural Homology, Protein ; Virus Internalization
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  • 94
    Publication Date: 2014-09-16
    Description: A defining feature governing head patterning of jawed vertebrates is a highly conserved gene regulatory network that integrates hindbrain segmentation with segmentally restricted domains of Hox gene expression. Although non-vertebrate chordates display nested domains of axial Hox expression, they lack hindbrain segmentation. The sea lamprey, a jawless fish, can provide unique insights into vertebrate origins owing to its phylogenetic position at the base of the vertebrate tree. It has been suggested that lamprey may represent an intermediate state where nested Hox expression has not been coupled to the process of hindbrain segmentation. However, little is known about the regulatory network underlying Hox expression in lamprey or its relationship to hindbrain segmentation. Here, using a novel tool that allows cross-species comparisons of regulatory elements between jawed and jawless vertebrates, we report deep conservation of both upstream regulators and segmental activity of enhancer elements across these distant species. Regulatory regions from diverse gnathostomes drive segmental reporter expression in the lamprey hindbrain and require the same transcriptional inputs (for example, Kreisler (also known as Mafba), Krox20 (also known as Egr2a)) in both lamprey and zebrafish. We find that lamprey hox genes display dynamic segmentally restricted domains of expression; we also isolated a conserved exonic hox2 enhancer from lamprey that drives segmental expression in rhombomeres 2 and 4. Our results show that coupling of Hox gene expression to segmentation of the hindbrain is an ancient trait with origin at the base of vertebrates that probably led to the formation of rhombomeric compartments with an underlying Hox code.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4209185/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4209185/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parker, Hugo J -- Bronner, Marianne E -- Krumlauf, Robb -- R01 DE017911/DE/NIDCR NIH HHS/ -- R01 NS086907/NS/NINDS NIH HHS/ -- R01DE017911/DE/NIDCR NIH HHS/ -- R01NS086907/NS/NINDS NIH HHS/ -- England -- Nature. 2014 Oct 23;514(7523):490-3. doi: 10.1038/nature13723. Epub 2014 Sep 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stowers Institute for Medical Research, Kansas City, Missouri 64110, USA. ; Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, California 91125, USA. ; 1] Stowers Institute for Medical Research, Kansas City, Missouri 64110, USA [2] Department of Anatomy and Cell Biology, Kansas University Medical Center, Kansas City, Kansas 66160, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25219855" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Body Patterning/genetics ; Conserved Sequence/*genetics ; Enhancer Elements, Genetic/genetics ; *Evolution, Molecular ; Gene Expression Regulation, Developmental ; Gene Regulatory Networks/*genetics ; Genes, Homeobox/*genetics ; Lampreys/embryology/genetics ; Molecular Sequence Data ; Phylogeny ; Rhombencephalon/*embryology/*metabolism ; Vertebrates/*embryology/genetics ; Zebrafish/embryology/genetics
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  • 95
    Publication Date: 2014-08-28
    Description: Sensory regions of the brain integrate environmental cues with copies of motor-related signals important for imminent and ongoing movements. In mammals, signals propagating from the motor cortex to the auditory cortex are thought to have a critical role in normal hearing and behaviour, yet the synaptic and circuit mechanisms by which these motor-related signals influence auditory cortical activity remain poorly understood. Using in vivo intracellular recordings in behaving mice, we find that excitatory neurons in the auditory cortex are suppressed before and during movement, owing in part to increased activity of local parvalbumin-positive interneurons. Electrophysiology and optogenetic gain- and loss-of-function experiments reveal that motor-related changes in auditory cortical dynamics are driven by a subset of neurons in the secondary motor cortex that innervate the auditory cortex and are active during movement. These findings provide a synaptic and circuit basis for the motor-related corollary discharge hypothesized to facilitate hearing and auditory-guided behaviours.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4248668/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4248668/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schneider, David M -- Nelson, Anders -- Mooney, Richard -- NS079929/NS/NINDS NIH HHS/ -- R01 DC013826/DC/NIDCD NIH HHS/ -- R21 NS079929/NS/NINDS NIH HHS/ -- T32 GM008441/GM/NIGMS NIH HHS/ -- England -- Nature. 2014 Sep 11;513(7517):189-94. doi: 10.1038/nature13724. Epub 2014 Aug 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Neurobiology, Duke University School of Medicine, Durham, North Carolina 27710, USA [2]. ; Department of Neurobiology, Duke University School of Medicine, Durham, North Carolina 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25162524" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Auditory Cortex/*physiology ; Electrical Synapses/*physiology ; Female ; Male ; Mice ; Mice, Inbred C57BL ; Motor Activity/*physiology ; Optogenetics ; Sensory Receptor Cells/metabolism
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  • 96
    Publication Date: 2014-12-04
    Description: T-helper type 17 (TH17) cells that produce the cytokines interleukin-17A (IL-17A) and IL-17F are implicated in the pathogenesis of several autoimmune diseases. The differentiation of TH17 cells is regulated by transcription factors such as RORgammat, but post-translational mechanisms preventing the rampant production of pro-inflammatory IL-17A have received less attention. Here we show that the deubiquitylating enzyme DUBA is a negative regulator of IL-17A production in T cells. Mice with DUBA-deficient T cells developed exacerbated inflammation in the small intestine after challenge with anti-CD3 antibodies. DUBA interacted with the ubiquitin ligase UBR5, which suppressed DUBA abundance in naive T cells. DUBA accumulated in activated T cells and stabilized UBR5, which then ubiquitylated RORgammat in response to TGF-beta signalling. Our data identify DUBA as a cell-intrinsic suppressor of IL-17 production.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rutz, Sascha -- Kayagaki, Nobuhiko -- Phung, Qui T -- Eidenschenk, Celine -- Noubade, Rajkumar -- Wang, Xiaoting -- Lesch, Justin -- Lu, Rongze -- Newton, Kim -- Huang, Oscar W -- Cochran, Andrea G -- Vasser, Mark -- Fauber, Benjamin P -- DeVoss, Jason -- Webster, Joshua -- Diehl, Lauri -- Modrusan, Zora -- Kirkpatrick, Donald S -- Lill, Jennie R -- Ouyang, Wenjun -- Dixit, Vishva M -- England -- Nature. 2015 Feb 19;518(7539):417-21. doi: 10.1038/nature13979. Epub 2014 Dec 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Protein Chemistry, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Early Discovery Biochemistry, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Discovery Chemistry, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Pathology, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Molecular Biology, Genentech, 1 DNA Way, South San Francisco, California 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25470037" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Enzyme Stability ; Female ; Inflammation/genetics/pathology ; Interleukin-17/*biosynthesis ; Intestine, Small/metabolism/pathology ; Lymphocyte Activation ; Mice ; Mice, Inbred C57BL ; Nuclear Receptor Subfamily 1, Group F, Member 3/metabolism ; Proteasome Endopeptidase Complex/metabolism ; Protein Binding ; *Protein Biosynthesis ; Signal Transduction ; Substrate Specificity ; Th17 Cells/*metabolism ; Transforming Growth Factor beta/metabolism ; Ubiquitin-Protein Ligases/metabolism ; Ubiquitin-Specific Proteases/biosynthesis/deficiency/genetics/*metabolism ; Ubiquitination
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  • 97
    Publication Date: 2014-11-20
    Description: Emerging evidence suggests that the ribosome has a regulatory function in directing how the genome is translated in time and space. However, how this regulation is encoded in the messenger RNA sequence remains largely unknown. Here we uncover unique RNA regulons embedded in homeobox (Hox) 5' untranslated regions (UTRs) that confer ribosome-mediated control of gene expression. These structured RNA elements, resembling viral internal ribosome entry sites (IRESs), are found in subsets of Hox mRNAs. They facilitate ribosome recruitment and require the ribosomal protein RPL38 for their activity. Despite numerous layers of Hox gene regulation, these IRES elements are essential for converting Hox transcripts into proteins to pattern the mammalian body plan. This specialized mode of IRES-dependent translation is enabled by an additional regulatory element that we term the translation inhibitory element (TIE), which blocks cap-dependent translation of transcripts. Together, these data uncover a new paradigm for ribosome-mediated control of gene expression and organismal development.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4353651/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4353651/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xue, Shifeng -- Tian, Siqi -- Fujii, Kotaro -- Kladwang, Wipapat -- Das, Rhiju -- Barna, Maria -- 7DP2OD00850902/OD/NIH HHS/ -- DP2 OD008509/OD/NIH HHS/ -- R01 GM102519/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Jan 1;517(7532):33-8. doi: 10.1038/nature14010. Epub 2014 Nov 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Developmental Biology, Stanford University, Stanford, California 94305, USA [2] Department of Genetics, Stanford University, Stanford, California 94305, USA [3] Tetrad Graduate Program, University of California, San Francisco, San Francisco, California 94158, USA. ; Department of Biochemistry, Stanford University, Stanford, California 94305, USA. ; 1] Department of Developmental Biology, Stanford University, Stanford, California 94305, USA [2] Department of Genetics, Stanford University, Stanford, California 94305, USA. ; 1] Department of Biochemistry, Stanford University, Stanford, California 94305, USA [2] Department of Physics, Stanford University, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25409156" target="_blank"〉PubMed〈/a〉
    Keywords: 5' Untranslated Regions/*genetics ; Animals ; Bone and Bones/embryology/metabolism ; Cell Line ; Conserved Sequence ; Evolution, Molecular ; Gene Expression Regulation/*genetics ; Genes, Homeobox/*genetics ; Mice ; Molecular Sequence Data ; Protein Biosynthesis/genetics ; RNA Caps/metabolism ; Regulatory Sequences, Ribonucleic Acid/*genetics ; Ribosomal Proteins/metabolism ; Ribosomes/chemistry/*metabolism ; Substrate Specificity ; Zebrafish/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 98
    Publication Date: 2014-12-24
    Description: The kinetochore is the crucial apparatus regulating chromosome segregation in mitosis and meiosis. Particularly in meiosis I, unlike in mitosis, sister kinetochores are captured by microtubules emanating from the same spindle pole (mono-orientation) and centromeric cohesion mediated by cohesin is protected in the following anaphase. Although meiotic kinetochore factors have been identified only in budding and fission yeasts, these molecules and their functions are thought to have diverged earlier. Therefore, a conserved mechanism for meiotic kinetochore regulation remains elusive. Here we have identified in mouse a meiosis-specific kinetochore factor that we termed MEIKIN, which functions in meiosis I but not in meiosis II or mitosis. MEIKIN plays a crucial role in both mono-orientation and centromeric cohesion protection, partly by stabilizing the localization of the cohesin protector shugoshin. These functions are mediated mainly by the activity of Polo-like kinase PLK1, which is enriched to kinetochores in a MEIKIN-dependent manner. Our integrative analysis indicates that the long-awaited key regulator of meiotic kinetochore function is Meikin, which is conserved from yeasts to humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Jihye -- Ishiguro, Kei-ichiro -- Nambu, Aya -- Akiyoshi, Bungo -- Yokobayashi, Shihori -- Kagami, Ayano -- Ishiguro, Tadashi -- Pendas, Alberto M -- Takeda, Naoki -- Sakakibara, Yogo -- Kitajima, Tomoya S -- Tanno, Yuji -- Sakuno, Takeshi -- Watanabe, Yoshinori -- England -- Nature. 2015 Jan 22;517(7535):466-71. doi: 10.1038/nature14097. Epub 2014 Dec 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Chromosome Dynamics, Institute of Molecular and Cellular Biosciences, University of Tokyo, 1-1-1Yayoi, Tokyo 113-0032, Japan. ; Instituto de Biologia Molecular y Celular del Cancer (CSIC-USAL), 37007 Salamanca, Spain. ; Center for Animal Resources and Development, Kumamoto University, 2-2-1 Honjo, Kumamoto 860-0811 Japan. ; Laboratory for Chromosome Segregation, RIKEN Center for Developmental Biology, 2-2-3 Minatojima-Minamimachi, Chuo-ku, Kobe 650-0047, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25533956" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle Proteins/metabolism ; Centromere/metabolism ; Chromosomal Proteins, Non-Histone/deficiency/genetics/*metabolism ; *Conserved Sequence ; Female ; Humans ; Infertility/genetics/metabolism ; Kinetochores/*metabolism ; Male ; *Meiosis ; Mice ; Molecular Sequence Data ; Protein-Serine-Threonine Kinases/metabolism ; Proto-Oncogene Proteins/metabolism ; Saccharomyces cerevisiae Proteins/metabolism ; Schizosaccharomyces pombe Proteins/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 99
    Publication Date: 2014-10-23
    Description: The gastrointestinal tracts of mammals are colonized by hundreds of microbial species that contribute to health, including colonization resistance against intestinal pathogens. Many antibiotics destroy intestinal microbial communities and increase susceptibility to intestinal pathogens. Among these, Clostridium difficile, a major cause of antibiotic-induced diarrhoea, greatly increases morbidity and mortality in hospitalized patients. Which intestinal bacteria provide resistance to C. difficile infection and their in vivo inhibitory mechanisms remain unclear. Here we correlate loss of specific bacterial taxa with development of infection, by treating mice with different antibiotics that result in distinct microbiota changes and lead to varied susceptibility to C. difficile. Mathematical modelling augmented by analyses of the microbiota of hospitalized patients identifies resistance-associated bacteria common to mice and humans. Using these platforms, we determine that Clostridium scindens, a bile acid 7alpha-dehydroxylating intestinal bacterium, is associated with resistance to C. difficile infection and, upon administration, enhances resistance to infection in a secondary bile acid dependent fashion. Using a workflow involving mouse models, clinical studies, metagenomic analyses, and mathematical modelling, we identify a probiotic candidate that corrects a clinically relevant microbiome deficiency. These findings have implications for the rational design of targeted antimicrobials as well as microbiome-based diagnostics and therapeutics for individuals at risk of C. difficile infection.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4354891/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4354891/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buffie, Charlie G -- Bucci, Vanni -- Stein, Richard R -- McKenney, Peter T -- Ling, Lilan -- Gobourne, Asia -- No, Daniel -- Liu, Hui -- Kinnebrew, Melissa -- Viale, Agnes -- Littmann, Eric -- van den Brink, Marcel R M -- Jenq, Robert R -- Taur, Ying -- Sander, Chris -- Cross, Justin R -- Toussaint, Nora C -- Xavier, Joao B -- Pamer, Eric G -- AI95706/AI/NIAID NIH HHS/ -- DP2 OD008440/OD/NIH HHS/ -- DP2OD008440/OD/NIH HHS/ -- K23 AI095398/AI/NIAID NIH HHS/ -- P01 CA023766/CA/NCI NIH HHS/ -- P30 CA008748/CA/NCI NIH HHS/ -- R01 AI042135/AI/NIAID NIH HHS/ -- R01 AI095706/AI/NIAID NIH HHS/ -- R01 AI42135/AI/NIAID NIH HHS/ -- T32 CA009149/CA/NCI NIH HHS/ -- T32 GM007739/GM/NIGMS NIH HHS/ -- T32GM07739/GM/NIGMS NIH HHS/ -- U54 CA148967/CA/NCI NIH HHS/ -- England -- Nature. 2015 Jan 8;517(7533):205-8. doi: 10.1038/nature13828. Epub 2014 Oct 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA [2] Lucille Castori Center for Microbes, Inflammation and Cancer, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; 1] Computational Biology Program, Sloan-Kettering Institute, New York, New York 10065, USA [2] Department of Biology, University of Massachusetts Dartmouth, North Dartmouth, Massachusetts 02747, USA. ; Computational Biology Program, Sloan-Kettering Institute, New York, New York 10065, USA. ; Lucille Castori Center for Microbes, Inflammation and Cancer, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Donald B. and Catherine C. Marron Cancer Metabolism Center, Sloan-Kettering Institute, New York, New York 10065, USA. ; Genomics Core Laboratory, Sloan-Kettering Institute, New York, New York 10065, USA. ; 1] Bone Marrow Transplant Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA [2] Immunology Program, Sloan-Kettering Institute, New York, New York 10065, USA. ; Bone Marrow Transplant Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; 1] Lucille Castori Center for Microbes, Inflammation and Cancer, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA [2] Computational Biology Program, Sloan-Kettering Institute, New York, New York 10065, USA. ; 1] Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA [2] Lucille Castori Center for Microbes, Inflammation and Cancer, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA [3] Immunology Program, Sloan-Kettering Institute, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25337874" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/pharmacology ; Bile Acids and Salts/*metabolism ; Biological Evolution ; Clostridium/metabolism ; Clostridium difficile/drug effects/*physiology ; Colitis/metabolism/microbiology/prevention & control/therapy ; Disease Susceptibility/*microbiology ; Feces/microbiology ; Female ; Humans ; Intestines/drug effects/*metabolism/*microbiology ; Metagenome/genetics ; Mice ; Mice, Inbred C57BL ; Microbiota/drug effects/genetics/*physiology ; Symbiosis
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    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 100
    Publication Date: 2014-12-10
    Description: The widespread reorganization of cellular architecture in mitosis is achieved through extensive protein phosphorylation, driven by the coordinated activation of a mitotic kinase network and repression of counteracting phosphatases. Phosphatase activity must subsequently be restored to promote mitotic exit. Although Cdc14 phosphatase drives this reversal in budding yeast, protein phosphatase 1 (PP1) and protein phosphatase 2A (PP2A) activities have each been independently linked to mitotic exit control in other eukaryotes. Here we describe a mitotic phosphatase relay in which PP1 reactivation is required for the reactivation of both PP2A-B55 and PP2A-B56 to coordinate mitotic progression and exit in fission yeast. The staged recruitment of PP1 (the Dis2 isoform) to the regulatory subunits of the PP2A-B55 and PP2A-B56 (B55 also known as Pab1; B56 also known as Par1) holoenzymes sequentially activates each phosphatase. The pathway is blocked in early mitosis because the Cdk1-cyclin B kinase (Cdk1 also known as Cdc2) inhibits PP1 activity, but declining cyclin B levels later in mitosis permit PP1 to auto-reactivate. PP1 first reactivates PP2A-B55; this enables PP2A-B55 in turn to promote the reactivation of PP2A-B56 by dephosphorylating a PP1-docking site in PP2A-B56, thereby promoting the recruitment of PP1. PP1 recruitment to human, mitotic PP2A-B56 holoenzymes and the sequences of these conserved PP1-docking motifs suggest that PP1 regulates PP2A-B55 and PP2A-B56 activities in a variety of signalling contexts throughout eukaryotes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4338534/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4338534/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grallert, Agnes -- Boke, Elvan -- Hagting, Anja -- Hodgson, Ben -- Connolly, Yvonne -- Griffiths, John R -- Smith, Duncan L -- Pines, Jonathon -- Hagan, Iain M -- 092096/Wellcome Trust/United Kingdom -- A13678/Cancer Research UK/United Kingdom -- A16406/Cancer Research UK/United Kingdom -- C147/A16406/Cancer Research UK/United Kingdom -- C29/A13678/Cancer Research UK/United Kingdom -- England -- Nature. 2015 Jan 1;517(7532):94-8. doi: 10.1038/nature14019. Epub 2014 Dec 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cell Division Group, CRUK Manchester Institute, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK. ; The Gurdon Institute, Tennis Court Road, University of Cambridge, Cambridge, CB2 1QN, UK. ; Biological Mass Spectrometry, CRUK Manchester Institute, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25487150" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Binding Sites ; CDC2 Protein Kinase/metabolism ; Chromosome Segregation ; Conserved Sequence ; Cyclin B/metabolism ; Enzyme Activation ; HeLa Cells ; Holoenzymes/metabolism ; Humans ; Isoenzymes/metabolism ; *Mitosis ; Molecular Sequence Data ; Phosphorylation ; Protein Phosphatase 1/*metabolism ; Protein Phosphatase 2/chemistry/*metabolism ; Protein Subunits/chemistry/metabolism ; Schizosaccharomyces/*cytology/*enzymology ; Schizosaccharomyces pombe Proteins/chemistry/metabolism ; Signal Transduction
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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