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  • Mice, Inbred C57BL  (324)
  • Reproducibility of Results  (303)
  • Saccharomyces cerevisiae
  • growth
  • pharmacokinetics
  • Nature Publishing Group (NPG)  (625)
  • Springer
  • Wiley-Blackwell
  • 2010-2014  (625)
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  • 1
    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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  • 2
    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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  • 3
    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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  • 4
    Publication Date: 2014-12-24
    Description: Models derived from human pluripotent stem cells that accurately recapitulate neural development in vitro and allow for the generation of specific neuronal subtypes are of major interest to the stem cell and biomedical community. Notch signalling, particularly through the Notch effector HES5, is a major pathway critical for the onset and maintenance of neural progenitor cells in the embryonic and adult nervous system. Here we report the transcriptional and epigenomic analysis of six consecutive neural progenitor cell stages derived from a HES5::eGFP reporter human embryonic stem cell line. Using this system, we aimed to model cell-fate decisions including specification, expansion and patterning during the ontogeny of cortical neural stem and progenitor cells. In order to dissect regulatory mechanisms that orchestrate the stage-specific differentiation process, we developed a computational framework to infer key regulators of each cell-state transition based on the progressive remodelling of the epigenetic landscape and then validated these through a pooled short hairpin RNA screen. We were also able to refine our previous observations on epigenetic priming at transcription factor binding sites and suggest here that they are mediated by combinations of core and stage-specific factors. Taken together, we demonstrate the utility of our system and outline a general framework, not limited to the context of the neural lineage, to dissect regulatory circuits of differentiation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4336237/" 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/PMC4336237/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ziller, Michael J -- Edri, Reuven -- Yaffe, Yakey -- Donaghey, Julie -- Pop, Ramona -- Mallard, William -- Issner, Robbyn -- Gifford, Casey A -- Goren, Alon -- Xing, Jeffrey -- Gu, Hongcang -- Cacchiarelli, Davide -- Tsankov, Alexander M -- Epstein, Charles -- Rinn, John L -- Mikkelsen, Tarjei S -- Kohlbacher, Oliver -- Gnirke, Andreas -- Bernstein, Bradley E -- Elkabetz, Yechiel -- Meissner, Alexander -- F32 DK095537/DK/NIDDK NIH HHS/ -- HG006911/HG/NHGRI NIH HHS/ -- P01 GM099117/GM/NIGMS NIH HHS/ -- P01GM099117/GM/NIGMS NIH HHS/ -- U01 ES017155/ES/NIEHS NIH HHS/ -- U01ES017155/ES/NIEHS NIH HHS/ -- U54 HG006991/HG/NHGRI NIH HHS/ -- England -- Nature. 2015 Feb 19;518(7539):355-9. doi: 10.1038/nature13990. Epub 2014 Dec 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA [3] Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; Department of Cell and Developmental Biology, Sackler School of Medicine, Tel Aviv University, Ramat Aviv 6997801, Israel. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA [3] Center for Systems Biology and Center for Cancer Research, Massachusetts General Hospital, Boston, Massachusetts 02114, USA. ; Applied Bioinformatics, Center for Bioinformatics and Quantitative Biology Center, University of Tubingen, Tubingen 72076, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25533951" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Cell Differentiation/*genetics ; Cell Lineage/genetics ; Embryonic Stem Cells/*cytology/metabolism ; Epigenesis, Genetic/*genetics ; Epigenomics/*methods ; Humans ; Neural Stem Cells/*cytology/*metabolism ; RNA, Small Interfering/analysis/genetics ; Reproducibility of Results ; Transcription Factors/metabolism ; Transcription, Genetic/genetics
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  • 5
    Publication Date: 2014-12-11
    Description: Systematic interrogation of gene function requires the ability to perturb gene expression in a robust and generalizable manner. Here we describe structure-guided engineering of a CRISPR-Cas9 complex to mediate efficient transcriptional activation at endogenous genomic loci. We used these engineered Cas9 activation complexes to investigate single-guide RNA (sgRNA) targeting rules for effective transcriptional activation, to demonstrate multiplexed activation of ten genes simultaneously, and to upregulate long intergenic non-coding RNA (lincRNA) transcripts. We also synthesized a library consisting of 70,290 guides targeting all human RefSeq coding isoforms to screen for genes that, upon activation, confer resistance to a BRAF inhibitor. The top hits included genes previously shown to be able to confer resistance, and novel candidates were validated using individual sgRNA and complementary DNA overexpression. A gene expression signature based on the top screening hits correlated with markers of BRAF inhibitor resistance in cell lines and patient-derived samples. These results collectively demonstrate the potential of Cas9-based activators as a powerful genetic perturbation technology.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420636/" 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/PMC4420636/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Konermann, Silvana -- Brigham, Mark D -- Trevino, Alexandro E -- Joung, Julia -- Abudayyeh, Omar O -- Barcena, Clea -- Hsu, Patrick D -- Habib, Naomi -- Gootenberg, Jonathan S -- Nishimasu, Hiroshi -- Nureki, Osamu -- Zhang, Feng -- DP1 MH100706/MH/NIMH NIH HHS/ -- DP1-MH100706/DP/NCCDPHP CDC HHS/ -- R01 NS062849/NS/NINDS NIH HHS/ -- R01 NS073124/NS/NINDS NIH HHS/ -- R01-NS07312401/NS/NINDS NIH HHS/ -- England -- Nature. 2015 Jan 29;517(7536):583-8. doi: 10.1038/nature14136. Epub 2014 Dec 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Broad Institute of MIT and Harvard, 75 Ames Street, 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. ; 1] Broad Institute of MIT and Harvard, 75 Ames Street, Cambridge, Massachusetts 02142, USA [2] Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Broad Institute of MIT and Harvard, 75 Ames Street, Cambridge, Massachusetts 02142, USA. ; 1] Broad Institute of MIT and Harvard, 75 Ames Street, 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 [5] Department of Systems Biology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; 1] Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 2-11-16 Yayoi Bunkyo, Tokyo 113-0032, Japan [2] JST, PRESTO 2-11-16 Yayoi Bunkyo, Tokyo 113-0032, Japan. ; Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 2-11-16 Yayoi Bunkyo, Tokyo 113-0032, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25494202" target="_blank"〉PubMed〈/a〉
    Keywords: CRISPR-Associated Proteins/genetics/metabolism ; CRISPR-Cas Systems/*genetics ; Cell Line, Tumor ; Clustered Regularly Interspaced Short Palindromic Repeats/genetics ; DNA, Complementary/biosynthesis/genetics ; Drug Resistance, Neoplasm/drug effects/genetics ; Gene Expression Regulation, Neoplastic/genetics ; Gene Library ; Genetic Engineering/*methods ; Genetic Loci/genetics ; Genetic Testing ; Genome, Human/*genetics ; Humans ; Indoles/pharmacology ; Melanoma/drug therapy/*genetics ; Proto-Oncogene Proteins B-raf/antagonists & inhibitors ; RNA, Untranslated/biosynthesis/genetics/metabolism ; Reproducibility of Results ; Sulfonamides/pharmacology ; Transcriptional Activation/*genetics ; Up-Regulation/genetics
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  • 6
    Publication Date: 2014-11-05
    Description: Establishing the hippocampal cellular ensemble that represents an animal's environment involves the emergence and disappearance of place fields in specific CA1 pyramidal neurons, and the acquisition of different spatial firing properties across the active population. While such firing flexibility and diversity have been linked to spatial memory, attention and task performance, the cellular and network origin of these place cell features is unknown. Basic integrate-and-fire models of place firing propose that such features result solely from varying inputs to place cells, but recent studies suggest instead that place cells themselves may play an active role through regenerative dendritic events. However, owing to the difficulty of performing functional recordings from place cell dendrites, no direct evidence of regenerative dendritic events exists, leaving any possible connection to place coding unknown. Using multi-plane two-photon calcium imaging of CA1 place cell somata, axons and dendrites in mice navigating a virtual environment, here we show that regenerative dendritic events do exist in place cells of behaving mice, and, surprisingly, their prevalence throughout the arbour is highly spatiotemporally variable. Furthermore, we show that the prevalence of such events predicts the spatial precision and persistence or disappearance of place fields. This suggests that the dynamics of spiking throughout the dendritic arbour may play a key role in forming the hippocampal representation of space.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4289090/" 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/PMC4289090/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sheffield, Mark E J -- Dombeck, Daniel A -- 1R01MH101297/MH/NIMH NIH HHS/ -- R01 MH101297/MH/NIMH NIH HHS/ -- England -- Nature. 2015 Jan 8;517(7533):200-4. doi: 10.1038/nature13871. Epub 2014 Oct 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Northwestern University, Evanston, Illinois 60208, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25363782" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Axons/metabolism ; Calcium/*metabolism ; *Calcium Signaling ; Dendrites/*metabolism ; Hippocampus/*cytology/*physiology ; Male ; Memory, Long-Term/physiology ; Mice ; Mice, Inbred C57BL ; Neuronal Plasticity/physiology ; Space Perception/*physiology ; Time Factors
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  • 7
    Publication Date: 2014-05-16
    Description: During development, thalamocortical (TC) input has a critical role in the spatial delineation and patterning of cortical areas, yet the underlying cellular and molecular mechanisms that drive cortical neuron differentiation are poorly understood. In the primary (S1) and secondary (S2) somatosensory cortex, layer 4 (L4) neurons receive mutually exclusive input originating from two thalamic nuclei: the ventrobasalis (VB), which conveys tactile input, and the posterior nucleus (Po), which conveys modulatory and nociceptive input. Recently, we have shown that L4 neuron identity is not fully committed postnatally, implying a capacity for TC input to influence differentiation during cortical circuit assembly. Here we investigate whether the cell-type-specific molecular and functional identity of L4 neurons is instructed by the origin of their TC input. Genetic ablation of the VB at birth resulted in an anatomical and functional rewiring of Po projections onto L4 neurons in S1. This induced acquisition of Po input led to a respecification of postsynaptic L4 neurons, which developed functional molecular features of Po-target neurons while repressing VB-target traits. Respecified L4 neurons were able to respond both to touch and to noxious stimuli, in sharp contrast to the normal segregation of these sensory modalities in distinct cortical circuits. These findings reveal a behaviourally relevant TC-input-type-specific control over the molecular and functional differentiation of postsynaptic L4 neurons and cognate intracortical circuits, which instructs the development of modality-specific neuronal and circuit properties during corticogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pouchelon, Gabrielle -- Gambino, Frederic -- Bellone, Camilla -- Telley, Ludovic -- Vitali, Ilaria -- Luscher, Christian -- Holtmaat, Anthony -- Jabaudon, Denis -- England -- Nature. 2014 Jul 24;511(7510):471-4. doi: 10.1038/nature13390. Epub 2014 May 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Basic Neurosciences, Faculty of Medicine, University of Geneva, CH-1211 Geneva, Switzerland. ; 1] Department of Basic Neurosciences, Faculty of Medicine, University of Geneva, CH-1211 Geneva, Switzerland [2] Interdisciplinary Institute for NeuroScience, CNRS UMR 5297, 33077 Bordeaux, France. ; 1] Department of Basic Neurosciences, Faculty of Medicine, University of Geneva, CH-1211 Geneva, Switzerland [2] Clinic of Neurology, Department of Clinical Neurosciences, Geneva University Hospital, CH-1211 Geneva, Switzerland [3] Institute of Genetics & Genomics in Geneva (iGE3), University of Geneva, CH-1211 Geneva, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24828045" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/drug effects/physiology ; Capsaicin/pharmacology ; *Cell Differentiation/drug effects ; Female ; Male ; Mice, Inbred C57BL ; Neural Pathways/drug effects/*physiology ; Neurons/*cytology/drug effects/*physiology ; Noxae/pharmacology ; Optogenetics ; Post-Synaptic Density/drug effects/*physiology ; Somatosensory Cortex/cytology/drug effects/*physiology ; Synaptic Potentials/drug effects ; Thalamic Nuclei/cytology/drug effects/*physiology ; Touch/physiology ; Vibrissae/drug effects/physiology
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  • 8
    Publication Date: 2014-06-12
    Description: Cutaneous melanoma is epidemiologically linked to ultraviolet radiation (UVR), but the molecular mechanisms by which UVR drives melanomagenesis remain unclear. The most common somatic mutation in melanoma is a V600E substitution in BRAF, which is an early event. To investigate how UVR accelerates oncogenic BRAF-driven melanomagenesis, we used a BRAF(V600E) mouse model. In mice expressing BRAF(V600E) in their melanocytes, a single dose of UVR that mimicked mild sunburn in humans induced clonal expansion of the melanocytes, and repeated doses of UVR increased melanoma burden. Here we show that sunscreen (UVA superior, UVB sun protection factor (SPF) 50) delayed the onset of UVR-driven melanoma, but only provided partial protection. The UVR-exposed tumours showed increased numbers of single nucleotide variants and we observed mutations (H39Y, S124F, R245C, R270C, C272G) in the Trp53 tumour suppressor in approximately 40% of cases. TP53 is an accepted UVR target in human non-melanoma skin cancer, but is not thought to have a major role in melanoma. However, we show that, in mice, mutant Trp53 accelerated BRAF(V600E)-driven melanomagenesis, and that TP53 mutations are linked to evidence of UVR-induced DNA damage in human melanoma. Thus, we provide mechanistic insight into epidemiological data linking UVR to acquired naevi in humans. Furthermore, we identify TP53/Trp53 as a UVR-target gene that cooperates with BRAF(V600E) to induce melanoma, providing molecular insight into how UVR accelerates melanomagenesis. Our study validates public health campaigns that promote sunscreen protection for individuals at risk of melanoma.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4112218/" 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/PMC4112218/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Viros, Amaya -- Sanchez-Laorden, Berta -- Pedersen, Malin -- Furney, Simon J -- Rae, Joel -- Hogan, Kate -- Ejiama, Sarah -- Girotti, Maria Romina -- Cook, Martin -- Dhomen, Nathalie -- Marais, Richard -- A12738/Cancer Research UK/United Kingdom -- A13540/Cancer Research UK/United Kingdom -- A17240/Cancer Research UK/United Kingdom -- A7091/Cancer Research UK/United Kingdom -- A7192/Cancer Research UK/United Kingdom -- C107/A10433/Cancer Research UK/United Kingdom -- C5759/A12328/Cancer Research UK/United Kingdom -- England -- Nature. 2014 Jul 24;511(7510):478-82. doi: 10.1038/nature13298. Epub 2014 Jun 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Molecular Oncology Group, Cancer Research UK Manchester Institute, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK [2]. ; 1] Signal Transduction Team, Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK [2]. ; Signal Transduction Team, Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK. ; Molecular Oncology Group, Cancer Research UK Manchester Institute, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK. ; 1] Molecular Oncology Group, Cancer Research UK Manchester Institute, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK [2] Histopathology, Royal Surrey County Hospital, Egerton Road, Guildford GU2 7XX, UK. ; 1] Molecular Oncology Group, Cancer Research UK Manchester Institute, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK [2] Signal Transduction Team, Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24919155" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Transformation, Neoplastic/*genetics/*radiation effects ; DNA Damage/genetics ; Disease Models, Animal ; Female ; Humans ; Melanocytes/metabolism/pathology/radiation effects ; Melanoma/etiology/*genetics/metabolism/*pathology ; Mice ; Mice, Inbred C57BL ; Mutagenesis/genetics/*radiation effects ; Mutation/genetics/radiation effects ; Nevus/etiology/genetics/metabolism/pathology ; Proto-Oncogene Proteins B-raf/*genetics/metabolism ; Skin Neoplasms/etiology/genetics/metabolism/pathology ; Sunburn/complications/etiology/genetics ; Sunscreening Agents/pharmacology ; Tumor Suppressor Protein p53/*genetics/metabolism ; Ultraviolet Rays/*adverse effects
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  • 9
    Publication Date: 2014-10-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉See, Linda -- Fritz, Steffen -- McCallum, Ian -- England -- Nature. 2014 Oct 9;514(7521):168. doi: 10.1038/514168a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉International Institute for Applied Systems Analysis, Laxenburg, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25297427" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Biodiversity ; Calibration ; Environmental Monitoring ; *Information Dissemination ; Reproducibility of Results ; *Satellite Imagery ; Trees
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  • 10
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    Nature Publishing Group (NPG)
    Publication Date: 2014-03-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Perrin, Steve -- England -- Nature. 2014 Mar 27;507(7493):423-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24678540" target="_blank"〉PubMed〈/a〉
    Keywords: Amyotrophic Lateral Sclerosis/genetics/pathology/therapy ; Animals ; Cause of Death ; Clinical Trials as Topic/economics/standards ; *Disease Models, Animal ; Disease Progression ; Dose-Response Relationship, Drug ; Drug Evaluation, Preclinical/economics/*methods/*standards ; False Positive Reactions ; Guidelines as Topic ; Half-Life ; Humans ; Mice ; Organ Specificity ; Reproducibility of Results ; *Research Design ; Superoxide Dismutase/deficiency/genetics/metabolism ; Survival Analysis ; Translational Medical Research/economics/*methods/*standards ; Treatment Failure
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  • 11
    Publication Date: 2014-01-28
    Description: The tissue-resident macrophages of barrier organs constitute the first line of defence against pathogens at the systemic interface with the ambient environment. In the lung, resident alveolar macrophages (AMs) provide a sentinel function against inhaled pathogens. Bacterial constituents ligate Toll-like receptors (TLRs) on AMs, causing AMs to secrete proinflammatory cytokines that activate alveolar epithelial receptors, leading to recruitment of neutrophils that engulf pathogens. Because the AM-induced response could itself cause tissue injury, it is unclear how AMs modulate the response to prevent injury. Here, using real-time alveolar imaging in situ, we show that a subset of AMs attached to the alveolar wall form connexin 43 (Cx43)-containing gap junction channels with the epithelium. During lipopolysaccharide-induced inflammation, the AMs remained sessile and attached to the alveoli, and they established intercommunication through synchronized Ca(2+) waves, using the epithelium as the conducting pathway. The intercommunication was immunosuppressive, involving Ca(2+)-dependent activation of Akt, because AM-specific knockout of Cx43 enhanced alveolar neutrophil recruitment and secretion of proinflammatory cytokines in the bronchoalveolar lavage. A picture emerges of a novel immunomodulatory process in which a subset of alveolus-attached AMs intercommunicates immunosuppressive signals to reduce endotoxin-induced lung inflammation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4117212/" 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/PMC4117212/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Westphalen, Kristin -- Gusarova, Galina A -- Islam, Mohammad N -- Subramanian, Manikandan -- Cohen, Taylor S -- Prince, Alice S -- Bhattacharya, Jahar -- HL57556/HL/NHLBI NIH HHS/ -- HL64896/HL/NHLBI NIH HHS/ -- HL73989/HL/NHLBI NIH HHS/ -- HL78645/HL/NHLBI NIH HHS/ -- R01 HL057556/HL/NHLBI NIH HHS/ -- R01 HL064896/HL/NHLBI NIH HHS/ -- R01 HL073989/HL/NHLBI NIH HHS/ -- R01 HL078645/HL/NHLBI NIH HHS/ -- R01 HL079395/HL/NHLBI NIH HHS/ -- England -- Nature. 2014 Feb 27;506(7489):503-6. doi: 10.1038/nature12902. Epub 2014 Jan 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lung Biology Laboratory, Department of Medicine, Division of Pulmonary, Allergy and Critical Care, Columbia University Medical Center, New York, New York 10032, USA. ; Department of Medicine, Division of Molecular Medicine, Columbia University Medical Center, New York, New York 10032, USA. ; Department of Pediatrics, Columbia University Medical Center, New York, New York 10032, USA. ; 1] Lung Biology Laboratory, Department of Medicine, Division of Pulmonary, Allergy and Critical Care, Columbia University Medical Center, New York, New York 10032, USA [2] Department of Physiology & Cellular Biophysics, College of Physicians and Surgeons, Columbia University Medical Center, New York, New York 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24463523" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bronchoalveolar Lavage Fluid/immunology ; Calcium/metabolism ; Cell Adhesion ; *Cell Communication ; Connexin 43/deficiency/genetics/metabolism ; Cytokines/immunology/secretion ; Female ; Gap Junctions/metabolism ; Lipopolysaccharides/pharmacology ; Macrophages, Alveolar/*cytology/*immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Neutrophil Infiltration ; Neutrophils/immunology ; Pneumonia/chemically induced/immunology/pathology ; Pulmonary Alveoli/*cytology/*immunology ; Respiratory Mucosa/*cytology/*immunology
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  • 12
    Publication Date: 2014-11-20
    Description: Intestinal microbial communities have profound effects on host physiology. Whereas the symbiotic contribution of commensal bacteria is well established, the role of eukaryotic viruses that are present in the gastrointestinal tract under homeostatic conditions is undefined. Here we demonstrate that a common enteric RNA virus can replace the beneficial function of commensal bacteria in the intestine. Murine norovirus (MNV) infection of germ-free or antibiotic-treated mice restored intestinal morphology and lymphocyte function without inducing overt inflammation and disease. The presence of MNV also suppressed an expansion of group 2 innate lymphoid cells observed in the absence of bacteria, and induced transcriptional changes in the intestine associated with immune development and type I interferon (IFN) signalling. Consistent with this observation, the IFN-alpha receptor was essential for the ability of MNV to compensate for bacterial depletion. Importantly, MNV infection offset the deleterious effect of treatment with antibiotics in models of intestinal injury and pathogenic bacterial infection. These data indicate that eukaryotic viruses have the capacity to support intestinal homeostasis and shape mucosal immunity, similarly to commensal bacteria.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4257755/" 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/PMC4257755/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kernbauer, Elisabeth -- Ding, Yi -- Cadwell, Ken -- J 3435/Austrian Science Fund FWF/Austria -- P30CA016087/CA/NCI NIH HHS/ -- R01 DK093668/DK/NIDDK NIH HHS/ -- England -- Nature. 2014 Dec 4;516(7529):94-8. doi: 10.1038/nature13960. Epub 2014 Nov 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Kimmel Center for Biology and Medicine at the Skirball Institute, New York University School of Medicine, New York, New York 10016, USA [2] Department of Microbiology, New York University School of Medicine, New York, New York 10016, USA. ; 1] New York Presbyterian Hospital, New York, New York 10065, USA [2] Department of Pathology, 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/25409145" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/pharmacology ; Bacterial Physiological Phenomena/*immunology ; Citrobacter rodentium/physiology ; Enterobacteriaceae Infections/immunology ; Enterovirus/immunology/*physiology ; Female ; Gene Expression Profiling ; Gene Expression Regulation/immunology ; Immunity, Innate/immunology ; Immunity, Mucosal/*immunology ; Interferon Type I/immunology ; Intestinal Mucosa/cytology/drug effects/*immunology/*virology ; Male ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Norovirus/immunology/physiology ; Signal Transduction/immunology ; Specific Pathogen-Free Organisms
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  • 13
    Publication Date: 2014-08-28
    Description: The valence of memories is malleable because of their intrinsic reconstructive property. This property of memory has been used clinically to treat maladaptive behaviours. However, the neuronal mechanisms and brain circuits that enable the switching of the valence of memories remain largely unknown. Here we investigated these mechanisms by applying the recently developed memory engram cell- manipulation technique. We labelled with channelrhodopsin-2 (ChR2) a population of cells in either the dorsal dentate gyrus (DG) of the hippocampus or the basolateral complex of the amygdala (BLA) that were specifically activated during contextual fear or reward conditioning. Both groups of fear-conditioned mice displayed aversive light-dependent responses in an optogenetic place avoidance test, whereas both DG- and BLA-labelled mice that underwent reward conditioning exhibited an appetitive response in an optogenetic place preference test. Next, in an attempt to reverse the valence of memory within a subject, mice whose DG or BLA engram had initially been labelled by contextual fear or reward conditioning were subjected to a second conditioning of the opposite valence while their original DG or BLA engram was reactivated by blue light. Subsequent optogenetic place avoidance and preference tests revealed that although the DG-engram group displayed a response indicating a switch of the memory valence, the BLA-engram group did not. This switch was also evident at the cellular level by a change in functional connectivity between DG engram-bearing cells and BLA engram-bearing cells. Thus, we found that in the DG, the neurons carrying the memory engram of a given neutral context have plasticity such that the valence of a conditioned response evoked by their reactivation can be reversed by re-associating this contextual memory engram with a new unconditioned stimulus of an opposite valence. Our present work provides new insight into the functional neural circuits underlying the malleability of emotional memory.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4169316/" 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/PMC4169316/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Redondo, Roger L -- Kim, Joshua -- Arons, Autumn L -- Ramirez, Steve -- Liu, Xu -- Tonegawa, Susumu -- P50 MH058880/MH/NIMH NIH HHS/ -- R01 MH078821/MH/NIMH NIH HHS/ -- T32GM007287/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Sep 18;513(7518):426-30. doi: 10.1038/nature13725. Epub 2014 Aug 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉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 [3]. ; 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]. ; 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. ; 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.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25162525" target="_blank"〉PubMed〈/a〉
    Keywords: Affect ; Amygdala/physiology ; Animals ; Avoidance Learning ; Conditioning, Classical/physiology ; Cues ; Dentate Gyrus/physiology ; Fear ; Female ; Hippocampus/*physiology ; Male ; Memory/*physiology ; Mice ; Mice, Inbred C57BL ; Neuronal Plasticity/physiology ; Optogenetics ; Reward
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  • 14
    Publication Date: 2014-07-06
    Description: Tuberculosis remains second only to HIV/AIDS as the leading cause of mortality worldwide due to a single infectious agent. Despite chemotherapy, the global tuberculosis epidemic has intensified because of HIV co-infection, the lack of an effective vaccine and the emergence of multi-drug-resistant bacteria. Alternative host-directed strategies could be exploited to improve treatment efficacy and outcome, contain drug-resistant strains and reduce disease severity and mortality. The innate inflammatory response elicited by Mycobacterium tuberculosis (Mtb) represents a logical host target. Here we demonstrate that interleukin-1 (IL-1) confers host resistance through the induction of eicosanoids that limit excessive type I interferon (IFN) production and foster bacterial containment. We further show that, in infected mice and patients, reduced IL-1 responses and/or excessive type I IFN induction are linked to an eicosanoid imbalance associated with disease exacerbation. Host-directed immunotherapy with clinically approved drugs that augment prostaglandin E2 levels in these settings prevented acute mortality of Mtb-infected mice. Thus, IL-1 and type I IFNs represent two major counter-regulatory classes of inflammatory cytokines that control the outcome of Mtb infection and are functionally linked via eicosanoids. Our findings establish proof of concept for host-directed treatment strategies that manipulate the host eicosanoid network and represent feasible alternatives to conventional chemotherapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mayer-Barber, Katrin D -- Andrade, Bruno B -- Oland, Sandra D -- Amaral, Eduardo P -- Barber, Daniel L -- Gonzales, Jacqueline -- Derrick, Steven C -- Shi, Ruiru -- Kumar, Nathella Pavan -- Wei, Wang -- Yuan, Xing -- Zhang, Guolong -- Cai, Ying -- Babu, Subash -- Catalfamo, Marta -- Salazar, Andres M -- Via, Laura E -- Barry, Clifton E 3rd -- Sher, Alan -- Intramural NIH HHS/ -- England -- Nature. 2014 Jul 3;511(7507):99-103. doi: 10.1038/nature13489. Epub 2014 Jun 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunobiology Section, Laboratory of Parasitic Diseases (LPD), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland 20892, USA. ; 1] Immunobiology Section, Laboratory of Parasitic Diseases (LPD), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland 20892, USA [2] Department of Immunology, Biomedical Sciences Institutes, University of Sao Paulo, 05508-900 Sao Paulo, Brazil. ; T Lymphocyte Biology Unit, LPD, NIAID, NIH, Bethesda, Maryland 20892, USA. ; Tuberculosis Research Section, Laboratory of Clinical Infectious Disease, NIAID, NIH, Bethesda, Maryland 20892, USA. ; Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland 20892, USA. ; Henan Chest Hospital, 450003 Zhengzhou, China. ; 1] NIH, International Center for Excellence in Research, 600 031 Chennai, India [2] National Institute for Research in Tuberculosis (NIRT), 600 031 Chennai, India. ; Sino-US International Research Center for Tuberculosis, and Henan Public Health Center, 450003 Zhengzhou, China. ; 1] NIH, International Center for Excellence in Research, 600 031 Chennai, India [2] Helminth Immunology Section, LPD, NIAID, NIH, Bethesda, Maryland 20892, USA. ; Clinical and Molecular Retrovirology Section, Laboratory of Immunoregulation, NIAID, NIH, Bethesda, Maryland 20892, USA. ; Oncovir Inc., Washington, Washington DC 20008, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24990750" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dinoprostone/antagonists & inhibitors/biosynthesis/metabolism ; Disease Models, Animal ; Female ; Humans ; Immunity, Innate/immunology ; *Immunotherapy ; Interferon Type I/antagonists & inhibitors/biosynthesis/*immunology ; Interleukin-1/*immunology ; Male ; Mice ; Mice, Inbred C57BL ; Mycobacterium tuberculosis/*immunology ; Tuberculosis, Pulmonary/*immunology/microbiology/*therapy
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  • 15
    Publication Date: 2014-09-19
    Description: Non-caloric artificial sweeteners (NAS) are among the most widely used food additives worldwide, regularly consumed by lean and obese individuals alike. NAS consumption is considered safe and beneficial owing to their low caloric content, yet supporting scientific data remain sparse and controversial. Here we demonstrate that consumption of commonly used NAS formulations drives the development of glucose intolerance through induction of compositional and functional alterations to the intestinal microbiota. These NAS-mediated deleterious metabolic effects are abrogated by antibiotic treatment, and are fully transferrable to germ-free mice upon faecal transplantation of microbiota configurations from NAS-consuming mice, or of microbiota anaerobically incubated in the presence of NAS. We identify NAS-altered microbial metabolic pathways that are linked to host susceptibility to metabolic disease, and demonstrate similar NAS-induced dysbiosis and glucose intolerance in healthy human subjects. Collectively, our results link NAS consumption, dysbiosis and metabolic abnormalities, thereby calling for a reassessment of massive NAS usage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suez, Jotham -- Korem, Tal -- Zeevi, David -- Zilberman-Schapira, Gili -- Thaiss, Christoph A -- Maza, Ori -- Israeli, David -- Zmora, Niv -- Gilad, Shlomit -- Weinberger, Adina -- Kuperman, Yael -- Harmelin, Alon -- Kolodkin-Gal, Ilana -- Shapiro, Hagit -- Halpern, Zamir -- Segal, Eran -- Elinav, Eran -- England -- Nature. 2014 Oct 9;514(7521):181-6. doi: 10.1038/nature13793. Epub 2014 Sep 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Weizmann Institute of Science, Rehovot 76100, Israel. ; 1] Department of Computer Science and Applied Mathematics, Weizmann Institute of Science, Rehovot 76100, Israel [2]. ; 1] Department of Immunology, Weizmann Institute of Science, Rehovot 76100, Israel [2]. ; Day Care Unit and the Laboratory of Imaging and Brain Stimulation, Kfar Shaul hospital, Jerusalem Center for Mental Health, Jerusalem 91060, Israel. ; 1] Internal Medicine Department, Tel Aviv Sourasky Medical Center, Tel Aviv 64239, Israel [2] Research Center for Digestive Tract and Liver Diseases, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel [3] Digestive Center, Tel Aviv Sourasky Medical Center, Tel Aviv 64239, Israel. ; The Nancy and Stephen Grand Israel National Center for Personalized Medicine (INCPM), Weizmann Institute of Science, Rehovot 76100, Israel. ; Department of Computer Science and Applied Mathematics, Weizmann Institute of Science, Rehovot 76100, Israel. ; Department of Veterinary Resources, Weizmann Institute of Science, Rehovot 76100, Israel. ; Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100, Israel. ; 1] Research Center for Digestive Tract and Liver Diseases, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel [2] Digestive Center, Tel Aviv Sourasky Medical Center, Tel Aviv 64239, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25231862" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/pharmacology ; Aspartame/adverse effects ; Body Weight/drug effects ; Diet, High-Fat ; Dietary Fats/pharmacology ; Feces/microbiology ; Female ; Gastrointestinal Tract/*drug effects/*microbiology ; Germ-Free Life ; Glucose/metabolism ; Glucose Intolerance/*chemically induced/metabolism/*microbiology ; Humans ; Male ; Metabolic Syndrome X/chemically induced/metabolism/microbiology ; Mice ; Mice, Inbred C57BL ; Microbiota/*drug effects ; Saccharin/administration & dosage/adverse effects ; Sucrose/adverse effects/analogs & derivatives ; Sweetening Agents/*adverse effects ; Waist-Hip Ratio
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  • 16
    Publication Date: 2014-08-15
    Description: The connection between an altered gut microbiota and metabolic disorders such as obesity, diabetes, and cardiovascular disease is well established. Defects in preserving the integrity of the mucosal barriers can result in systemic endotoxaemia that contributes to chronic low-grade inflammation, which further promotes the development of metabolic syndrome. Interleukin (IL)-22 exerts essential roles in eliciting antimicrobial immunity and maintaining mucosal barrier integrity within the intestine. Here we investigate the connection between IL-22 and metabolic disorders. We find that the induction of IL-22 from innate lymphoid cells and CD4(+) T cells is impaired in obese mice under various immune challenges, especially in the colon during infection with Citrobacter rodentium. While innate lymphoid cell populations are largely intact in obese mice, the upregulation of IL-23, a cytokine upstream of IL-22, is compromised during the infection. Consequently, these mice are susceptible to C. rodentium infection, and both exogenous IL-22 and IL-23 are able to restore the mucosal host defence. Importantly, we further unveil unexpected functions of IL-22 in regulating metabolism. Mice deficient in IL-22 receptor and fed with high-fat diet are prone to developing metabolic disorders. Strikingly, administration of exogenous IL-22 in genetically obese leptin-receptor-deficient (db/db) mice and mice fed with high-fat diet reverses many of the metabolic symptoms, including hyperglycaemia and insulin resistance. IL-22 shows diverse metabolic benefits, as it improves insulin sensitivity, preserves gut mucosal barrier and endocrine functions, decreases endotoxaemia and chronic inflammation, and regulates lipid metabolism in liver and adipose tissues. In summary, we identify the IL-22 pathway as a novel target for therapeutic intervention in metabolic diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Xiaoting -- Ota, Naruhisa -- Manzanillo, Paolo -- Kates, Lance -- Zavala-Solorio, Jose -- Eidenschenk, Celine -- Zhang, Juan -- Lesch, Justin -- Lee, Wyne P -- Ross, Jed -- Diehl, Lauri -- van Bruggen, Nicholas -- Kolumam, Ganesh -- Ouyang, Wenjun -- England -- Nature. 2014 Oct 9;514(7521):237-41. doi: 10.1038/nature13564. Epub 2014 Aug 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Immunology, Genentech, South San Francisco, California 94080, USA [2]. ; Department of Immunology, Genentech, South San Francisco, California 94080, USA. ; Department of Biomedical Imaging, Genentech, South San Francisco, California 94080, USA. ; Department of Pathology, Genentech, South San Francisco, California 94080, USA. ; 1] Department of Biomedical Imaging, Genentech, South San Francisco, California 94080, USA [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25119041" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue, White/drug effects/metabolism ; Animals ; CD4-Positive T-Lymphocytes/immunology/secretion ; Chronic Disease ; Citrobacter rodentium/drug effects/immunology/physiology ; Colon/drug effects/immunology/microbiology ; Diabetes Mellitus/*immunology/*metabolism/pathology ; Diet, High-Fat ; Female ; Hyperglycemia/diet therapy/drug therapy/metabolism ; *Immunity, Mucosal/drug effects ; Inflammation/drug therapy/metabolism/pathology ; Insulin/metabolism ; Insulin Resistance ; Interleukin-23/immunology/metabolism/pharmacology ; Interleukins/*immunology/*metabolism/pharmacology/therapeutic use ; Lipid Metabolism/drug effects ; Liver/drug effects/metabolism ; Male ; Metabolic Diseases/diet therapy/drug therapy/*metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Obese ; Obesity/metabolism ; Receptors, Interleukin/deficiency/metabolism ; Receptors, Leptin/deficiency/metabolism
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  • 17
    Publication Date: 2014-08-01
    Description: In mammals, cytosine methylation is predominantly restricted to CpG dinucleotides and stably distributed across the genome, with local, cell-type-specific regulation directed by DNA binding factors. This comparatively static landscape is in marked contrast with the events of fertilization, during which the paternal genome is globally reprogrammed. Paternal genome demethylation includes the majority of CpGs, although methylation remains detectable at several notable features. These dynamics have been extensively characterized in the mouse, with only limited observations available in other mammals, and direct measurements are required to understand the extent to which early embryonic landscapes are conserved. We present genome-scale DNA methylation maps of human preimplantation development and embryonic stem cell derivation, confirming a transient state of global hypomethylation that includes most CpGs, while sites of residual maintenance are primarily restricted to gene bodies. Although most features share similar dynamics to those in mouse, maternally contributed methylation is divergently targeted to species-specific sets of CpG island promoters that extend beyond known imprint control regions. Retrotransposon regulation is also highly diverse, and transitions from maternally to embryonically expressed elements. Together, our data confirm that paternal genome demethylation is a general attribute of early mammalian development that is characterized by distinct modes of epigenetic regulation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4178976/" 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/PMC4178976/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, Zachary D -- Chan, Michelle M -- Humm, Kathryn C -- Karnik, Rahul -- Mekhoubad, Shila -- Regev, Aviv -- Eggan, Kevin -- Meissner, Alexander -- 1P50HG006193-01/HG/NHGRI NIH HHS/ -- 5DP1OD003958/OD/NIH HHS/ -- P01 GM099117/GM/NIGMS NIH HHS/ -- P01GM099117/GM/NIGMS NIH HHS/ -- P50 HG006193/HG/NHGRI NIH HHS/ -- U01 ES017155/ES/NIEHS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Jul 31;511(7511):611-5. doi: 10.1038/nature13581. Epub 2014 Jul 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA [3] Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA [4] Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts 02138, USA [5]. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Computational and Systems Biology Program, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA [3]. ; 1] Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA [2] Division of Reproductive Endocrinology &Infertility, Department of Obstetrics &Gynecology, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA [3] Obstetrics, Gynecology, and Reproductive Biology, Harvard Medical School, Boston, Massachusetts 02215, USA [4] Boston IVF, Waltham, Massachusetts 02451, USA [5] Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA [6]. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA [3] Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; 1] Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA [2] Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA [3] Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA [3] Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA [4] Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts 02138, USA [5] Howard Hughes Medical Institute, Harvard University, Cambridge, Massachusetts 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25079558" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/*metabolism ; Cell Line ; CpG Islands/physiology ; DNA/metabolism ; *DNA Methylation ; Embryonic Stem Cells ; Female ; Gene Expression Regulation, Developmental ; Humans ; Male ; Mice ; Mice, Inbred C57BL
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  • 18
    Publication Date: 2014-11-11
    Description: Autophagy is an evolutionarily conserved catabolic process that recycles nutrients upon starvation and maintains cellular energy homeostasis. Its acute regulation by nutrient-sensing signalling pathways is well described, but its longer-term transcriptional regulation is not. The nuclear receptors peroxisome proliferator-activated receptor-alpha (PPARalpha) and farnesoid X receptor (FXR) are activated in the fasted and fed liver, respectively. Here we show that both PPARalpha and FXR regulate hepatic autophagy in mice. Pharmacological activation of PPARalpha reverses the normal suppression of autophagy in the fed state, inducing autophagic lipid degradation, or lipophagy. This response is lost in PPARalpha knockout (Ppara(-/-), also known as Nr1c1(-/-)) mice, which are partially defective in the induction of autophagy by fasting. Pharmacological activation of the bile acid receptor FXR strongly suppresses the induction of autophagy in the fasting state, and this response is absent in FXR knockout (Fxr(-/-), also known as Nr1h4(-/-)) mice, which show a partial defect in suppression of hepatic autophagy in the fed state. PPARalpha and FXR compete for binding to shared sites in autophagic gene promoters, with opposite transcriptional outputs. These results reveal complementary, interlocking mechanisms for regulation of autophagy by nutrient status.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4267857/" 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/PMC4267857/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Jae Man -- Wagner, Martin -- Xiao, Rui -- Kim, Kang Ho -- Feng, Dan -- Lazar, Mitchell A -- Moore, David D -- DK43806/DK/NIDDK NIH HHS/ -- P30 DK019525/DK/NIDDK NIH HHS/ -- P30DX56338-05A2/PHS HHS/ -- P39CA125123-04/CA/NCI NIH HHS/ -- R01 DK049780/DK/NIDDK NIH HHS/ -- R01 DK49780/DK/NIDDK NIH HHS/ -- R37 DK043806/DK/NIDDK NIH HHS/ -- S10RR027783-01A1/RR/NCRR NIH HHS/ -- U54HD-07495-39/HD/NICHD NIH HHS/ -- England -- Nature. 2014 Dec 4;516(7529):112-5. doi: 10.1038/nature13961. Epub 2014 Nov 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA. ; Division of Endocrinology, Diabetes, and Metabolism and the Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19014, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25383539" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autophagy/genetics/*physiology ; Cell Line ; Cells, Cultured ; Fasting/physiology ; Gene Expression Regulation ; Hepatocytes/metabolism ; Liver/cytology/*metabolism/ultrastructure ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Microtubule-Associated Proteins/genetics/metabolism ; PPAR alpha ; Receptors, Cytoplasmic and Nuclear/genetics/*metabolism
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  • 19
    Publication Date: 2014-03-22
    Description: The mammalian skeletal system harbours a hierarchical system of mesenchymal stem cells, osteoprogenitors and osteoblasts sustaining lifelong bone formation. Osteogenesis is indispensable for the homeostatic renewal of bone as well as regenerative fracture healing, but these processes frequently decline in ageing organisms, leading to loss of bone mass and increased fracture incidence. Evidence indicates that the growth of blood vessels in bone and osteogenesis are coupled, but relatively little is known about the underlying cellular and molecular mechanisms. Here we identify a new capillary subtype in the murine skeletal system with distinct morphological, molecular and functional properties. These vessels are found in specific locations, mediate growth of the bone vasculature, generate distinct metabolic and molecular microenvironments, maintain perivascular osteoprogenitors and couple angiogenesis to osteogenesis. The abundance of these vessels and associated osteoprogenitors was strongly reduced in bone from aged animals, and pharmacological reversal of this decline allowed the restoration of bone mass.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kusumbe, Anjali P -- Ramasamy, Saravana K -- Adams, Ralf H -- England -- Nature. 2014 Mar 20;507(7492):323-8. doi: 10.1038/nature13145. Epub 2014 Mar 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, D-48149 Munster, Germany [2]. ; 1] Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, D-48149 Munster, Germany [2] University of Munster, Faculty of Medicine, D-48149 Munster, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24646994" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/metabolism/pathology ; Animals ; Blood Vessels/anatomy & histology/cytology/growth & development/*physiology ; Bone and Bones/*blood supply/cytology ; Endothelial Cells/metabolism ; Hypoxia-Inducible Factor 1, alpha Subunit/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Neovascularization, Physiologic/*physiology ; Osteoblasts/cytology/metabolism ; Osteogenesis/*physiology ; Oxygen/metabolism ; Stem Cells/cytology/metabolism
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  • 20
    Publication Date: 2014-06-05
    Description: Transcriptional enhancers are crucial regulators of gene expression and animal development and the characterization of their genomic organization, spatiotemporal activities and sequence properties is a key goal in modern biology. Here we characterize the in vivo activity of 7,705 Drosophila melanogaster enhancer candidates covering 13.5% of the non-coding non-repetitive genome throughout embryogenesis. 3,557 (46%) candidates are active, suggesting a high density with 50,000 to 100,000 developmental enhancers genome-wide. The vast majority of enhancers display specific spatial patterns that are highly dynamic during development. Most appear to regulate their neighbouring genes, suggesting that the cis-regulatory genome is organized locally into domains, which are supported by chromosomal domains, insulator binding and genome evolution. However, 12 to 21 per cent of enhancers appear to skip non-expressed neighbours and regulate a more distal gene. Finally, we computationally identify cis-regulatory motifs that are predictive and required for enhancer activity, as we validate experimentally. This work provides global insights into the organization of an animal regulatory genome and the make-up of enhancer sequences and confirms and generalizes principles from previous studies. All enhancer patterns are annotated manually with a controlled vocabulary and all results are available through a web interface (http://enhancers.starklab.org), including the raw images of all microscopy slides for manual inspection at arbitrary zoom levels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kvon, Evgeny Z -- Kazmar, Tomas -- Stampfel, Gerald -- Yanez-Cuna, J Omar -- Pagani, Michaela -- Schernhuber, Katharina -- Dickson, Barry J -- Stark, Alexander -- England -- Nature. 2014 Aug 7;512(7512):91-5. doi: 10.1038/nature13395. Epub 2014 Jun 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Research Institute of Molecular Pathology (IMP), Vienna Biocenter VBC, Dr Bohr-Gasse 7, 1030 Vienna, Austria [2] Howard Hughes Medical Institute, Janelia Farm Research Campus, Ashburn, Virginia 20147, USA (B.J.D.); Genomics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA (E.Z.K.). ; Research Institute of Molecular Pathology (IMP), Vienna Biocenter VBC, Dr Bohr-Gasse 7, 1030 Vienna, Austria. ; 1] Research Institute of Molecular Pathology (IMP), Vienna Biocenter VBC, Dr Bohr-Gasse 7, 1030 Vienna, Austria [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24896182" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Drosophila melanogaster/*embryology/*genetics ; Embryonic Development/*genetics ; Enhancer Elements, Genetic/*genetics ; Gene Expression Regulation, Developmental/*genetics ; Genome, Insect/*genetics ; Internet ; Nucleotide Motifs/genetics ; Organ Specificity/genetics ; Regulatory Sequences, Nucleic Acid/genetics ; Reproducibility of Results ; User-Computer Interface
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  • 21
    Publication Date: 2014-03-29
    Description: Increases in brain blood flow, evoked by neuronal activity, power neural computation and form the basis of BOLD (blood-oxygen-level-dependent) functional imaging. Whether blood flow is controlled solely by arteriole smooth muscle, or also by capillary pericytes, is controversial. We demonstrate that neuronal activity and the neurotransmitter glutamate evoke the release of messengers that dilate capillaries by actively relaxing pericytes. Dilation is mediated by prostaglandin E2, but requires nitric oxide release to suppress vasoconstricting 20-HETE synthesis. In vivo, when sensory input increases blood flow, capillaries dilate before arterioles and are estimated to produce 84% of the blood flow increase. In pathology, ischaemia evokes capillary constriction by pericytes. We show that this is followed by pericyte death in rigor, which may irreversibly constrict capillaries and damage the blood-brain barrier. Thus, pericytes are major regulators of cerebral blood flow and initiators of functional imaging signals. Prevention of pericyte constriction and death may reduce the long-lasting blood flow decrease that damages neurons after stroke.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3976267/" 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/PMC3976267/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hall, Catherine N -- Reynell, Clare -- Gesslein, Bodil -- Hamilton, Nicola B -- Mishra, Anusha -- Sutherland, Brad A -- O'Farrell, Fergus M -- Buchan, Alastair M -- Lauritzen, Martin -- Attwell, David -- 075232/Wellcome Trust/United Kingdom -- G0500495/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2014 Apr 3;508(7494):55-60. doi: 10.1038/nature13165. Epub 2014 Mar 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Neuroscience, Physiology and Pharmacology, University College London, Gower Street, London, WC1E 6BT, UK [2]. ; 1] Department of Neuroscience and Pharmacology and Center for Healthy Aging, University of Copenhagen, DK-2200 Copenhagen N, Denmark [2]. ; Acute Stroke Programme, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DU, UK. ; Department of Neuroscience, Physiology and Pharmacology, University College London, Gower Street, London, WC1E 6BT, UK. ; 1] Department of Neuroscience and Pharmacology and Center for Healthy Aging, University of Copenhagen, DK-2200 Copenhagen N, Denmark [2] Department of Clinical Neurophysiology, Glostrup University Hospital, DK-2600 Glostrup, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24670647" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arterioles/physiology ; Blood-Brain Barrier/pathology/physiopathology ; Brain Ischemia/pathology ; Capillaries/*cytology/drug effects ; Cell Death ; Cerebellum/blood supply ; Cerebral Cortex/blood supply/cytology ; Cerebrovascular Circulation/drug effects/*physiology ; Dinoprostone/metabolism ; Excitatory Amino Acid Antagonists/pharmacology ; Female ; Functional Neuroimaging ; Glutamic Acid/pharmacology ; Hydroxyeicosatetraenoic Acids/biosynthesis ; In Vitro Techniques ; Male ; Mice ; Mice, Inbred C57BL ; Nitric Oxide/metabolism ; Pericytes/cytology/drug effects/pathology/*physiology ; Rats ; Rats, Sprague-Dawley ; Rats, Wistar ; Receptors, Glutamate/metabolism ; Signal Transduction/drug effects ; Stroke/pathology ; Vasoconstriction ; Vasodilation/drug effects
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  • 22
    Publication Date: 2014-02-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewis, Simon L -- England -- Nature. 2014 Feb 27;506(7489):409. doi: 10.1038/506409a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24572388" target="_blank"〉PubMed〈/a〉
    Keywords: *Climate Change ; *Dissent and Disputes ; Floods/statistics & numerical data ; Great Britain ; Journalism/standards ; Mass Media/standards ; *Public Opinion ; Rain ; Reproducibility of Results ; Uncertainty
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  • 23
    Publication Date: 2014-02-14
    Description: Regeneration of skeletal muscle depends on a population of adult stem cells (satellite cells) that remain quiescent throughout life. Satellite cell regenerative functions decline with ageing. Here we report that geriatric satellite cells are incapable of maintaining their normal quiescent state in muscle homeostatic conditions, and that this irreversibly affects their intrinsic regenerative and self-renewal capacities. In geriatric mice, resting satellite cells lose reversible quiescence by switching to an irreversible pre-senescence state, caused by derepression of p16(INK4a) (also called Cdkn2a). On injury, these cells fail to activate and expand, undergoing accelerated entry into a full senescence state (geroconversion), even in a youthful environment. p16(INK4a) silencing in geriatric satellite cells restores quiescence and muscle regenerative functions. Our results demonstrate that maintenance of quiescence in adult life depends on the active repression of senescence pathways. As p16(INK4a) is dysregulated in human geriatric satellite cells, these findings provide the basis for stem-cell rejuvenation in sarcopenic muscles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sousa-Victor, Pedro -- Gutarra, Susana -- Garcia-Prat, Laura -- Rodriguez-Ubreva, Javier -- Ortet, Laura -- Ruiz-Bonilla, Vanessa -- Jardi, Merce -- Ballestar, Esteban -- Gonzalez, Susana -- Serrano, Antonio L -- Perdiguero, Eusebio -- Munoz-Canoves, Pura -- England -- Nature. 2014 Feb 20;506(7488):316-21. doi: 10.1038/nature13013. Epub 2014 Feb 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Cell Biology Group, Department of Experimental and Health Sciences, Pompeu Fabra University, CIBER on Neurodegenerative diseases, E-08003 Barcelona, Spain [2] Buck Institute for Research on Aging, Novato, California 94945, USA. ; 1] Cell Biology Group, Department of Experimental and Health Sciences, Pompeu Fabra University, CIBER on Neurodegenerative diseases, E-08003 Barcelona, Spain [2]. ; Chromatin and Disease Group, Cancer Epigenetics and Biology Programme, Bellvitge Biomedical Research Institute, L'Hospitalet de Llobregat, E-08907 Barcelona, Spain. ; Cell Biology Group, Department of Experimental and Health Sciences, Pompeu Fabra University, CIBER on Neurodegenerative diseases, E-08003 Barcelona, Spain. ; Stem Cell Aging Group, Centro Nacional de Investigaciones Cardiovasculares, E-28029 Madrid, Spain. ; 1] Cell Biology Group, Department of Experimental and Health Sciences, Pompeu Fabra University, CIBER on Neurodegenerative diseases, E-08003 Barcelona, Spain [2] Institucio Catalana de Recerca i Estudis Avancats, E-08010 Barcelona, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24522534" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aging/*metabolism ; Animals ; Cells, Cultured ; Cyclin-Dependent Kinase Inhibitor p16/deficiency/genetics/*metabolism ; E2F1 Transcription Factor/metabolism ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Progeria/metabolism/pathology ; Regeneration ; Rejuvenation ; Retinoblastoma Protein/metabolism ; Satellite Cells, Skeletal Muscle/*cytology/*metabolism ; Young Adult
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  • 24
    Publication Date: 2014-08-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hanage, William P -- England -- Nature. 2014 Aug 21;512(7514):247-8. doi: 10.1038/512247a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Harvard School of Public Health in Boston, Massachusetts, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25143098" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Humans ; *Microbiota/genetics/physiology ; RNA, Ribosomal, 16S/genetics ; Reproducibility of Results ; Science/*standards ; *Uncertainty
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  • 25
    Publication Date: 2014-02-21
    Description: Crohn's disease is a debilitating inflammatory bowel disease (IBD) that can involve the entire digestive tract. A single-nucleotide polymorphism (SNP) encoding a missense variant in the autophagy gene ATG16L1 (rs2241880, Thr300Ala) is strongly associated with the incidence of Crohn's disease. Numerous studies have demonstrated the effect of ATG16L1 deletion or deficiency; however, the molecular consequences of the Thr300Ala (T300A) variant remains unknown. Here we show that amino acids 296-299 constitute a caspase cleavage motif in ATG16L1 and that the T300A variant (T316A in mice) significantly increases ATG16L1 sensitization to caspase-3-mediated processing. We observed that death-receptor activation or starvation-induced metabolic stress in human and murine macrophages increased degradation of the T300A or T316A variants of ATG16L1, respectively, resulting in diminished autophagy. Knock-in mice harbouring the T316A variant showed defective clearance of the ileal pathogen Yersinia enterocolitica and an elevated inflammatory cytokine response. In turn, deletion of the caspase-3-encoding gene, Casp3, or elimination of the caspase cleavage site by site-directed mutagenesis rescued starvation-induced autophagy and pathogen clearance, respectively. These findings demonstrate that caspase 3 activation in the presence of a common risk allele leads to accelerated degradation of ATG16L1, placing cellular stress, apoptotic stimuli and impaired autophagy in a unified pathway that predisposes to Crohn's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murthy, Aditya -- Li, Yun -- Peng, Ivan -- Reichelt, Mike -- Katakam, Anand Kumar -- Noubade, Rajkumar -- Roose-Girma, Merone -- DeVoss, Jason -- Diehl, Lauri -- Graham, Robert R -- van Lookeren Campagne, Menno -- England -- Nature. 2014 Feb 27;506(7489):456-62. doi: 10.1038/nature13044. Epub 2014 Feb 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, 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 Molecular Biology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; ITGR Human Genetics, 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/24553140" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Animals ; Autophagy/genetics ; Carrier Proteins/chemistry/*genetics/*metabolism ; Caspase 3/deficiency/genetics/*metabolism ; Cell Line ; Cells, Cultured ; Crohn Disease/*genetics/pathology ; Cytokines/immunology ; Enzyme Activation ; Female ; Food Deprivation ; Humans ; Macrophages/immunology/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mutagenesis, Site-Directed ; Polymorphism, Single Nucleotide/*genetics ; *Proteolysis ; Stress, Physiological ; Yersinia enterocolitica/immunology
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  • 26
    Publication Date: 2014-02-28
    Description: The hippocampus is critical for encoding declarative memory, our repository of knowledge of who, what, where and when. Mnemonic information is processed in the hippocampus through several parallel routes involving distinct subregions. In the classic trisynaptic pathway, information proceeds from entorhinal cortex (EC) to dentate gyrus to CA3 and then to CA1, the main hippocampal output. Genetic lesions of EC (ref. 3) and hippocampal dentate gyrus (ref. 4), CA3 (ref. 5) and CA1 (ref. 6) regions have revealed their distinct functions in learning and memory. In contrast, little is known about the role of CA2, a relatively small area interposed between CA3 and CA1 that forms the nexus of a powerful disynaptic circuit linking EC input with CA1 output. Here we report a novel transgenic mouse line that enabled us to selectively examine the synaptic connections and behavioural role of the CA2 region in adult mice. Genetically targeted inactivation of CA2 pyramidal neurons caused a pronounced loss of social memory--the ability of an animal to remember a conspecific--with no change in sociability or several other hippocampus-dependent behaviours, including spatial and contextual memory. These behavioural and anatomical results thus reveal CA2 as a critical hub of sociocognitive memory processing.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4000264/" 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/PMC4000264/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hitti, Frederick L -- Siegelbaum, Steven A -- F30 MH098633/MH/NIMH NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Apr 3;508(7494):88-92. doi: 10.1038/nature13028. Epub 2014 Feb 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Kavli Institute, College of Physicians and Surgeons, Columbia University 1051 Riverside Drive, New York, New York 10032, USA. ; 1] Department of Neuroscience, Kavli Institute, College of Physicians and Surgeons, Columbia University 1051 Riverside Drive, New York, New York 10032, USA [2] Department of Pharmacology, Howard Hughes Medical Institute, College of Physicians and Surgeons, Columbia University 1051 Riverside Drive, New York, New York 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24572357" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autistic Disorder/physiopathology ; CA2 Region, Hippocampal/cytology/*physiology ; Electrophysiology ; Female ; Integrases/genetics/metabolism ; Male ; Memory/*physiology ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Pyramidal Cells/physiology ; Schizophrenia/physiopathology ; *Social Behavior ; Space Perception/physiology ; Synapses/metabolism
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  • 27
    Publication Date: 2014-09-19
    Description: Gain-of-function mutations in the fibroblast growth factor receptor 3 gene (FGFR3) result in skeletal dysplasias, such as thanatophoric dysplasia and achondroplasia (ACH). The lack of disease models using human cells has hampered the identification of a clinically effective treatment for these diseases. Here we show that statin treatment can rescue patient-specific induced pluripotent stem cell (iPSC) models and a mouse model of FGFR3 skeletal dysplasia. We converted fibroblasts from thanatophoric dysplasia type I (TD1) and ACH patients into iPSCs. The chondrogenic differentiation of TD1 iPSCs and ACH iPSCs resulted in the formation of degraded cartilage. We found that statins could correct the degraded cartilage in both chondrogenically differentiated TD1 and ACH iPSCs. Treatment of ACH model mice with statin led to a significant recovery of bone growth. These results suggest that statins could represent a medical treatment for infants and children with TD1 and ACH.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamashita, Akihiro -- Morioka, Miho -- Kishi, Hiromi -- Kimura, Takeshi -- Yahara, Yasuhito -- Okada, Minoru -- Fujita, Kaori -- Sawai, Hideaki -- Ikegawa, Shiro -- Tsumaki, Noriyuki -- England -- Nature. 2014 Sep 25;513(7519):507-11. doi: 10.1038/nature13775. Epub 2014 Sep 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cell Induction and Regulation Field, Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan. ; 1] Cell Induction and Regulation Field, Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan [2] Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan. ; Department of Obstetrics and Gynecology, Hyogo College of Medicine, Hyogo 663-8501, Japan. ; Laboratory of Bone and Joint Diseases, Center for Integrated Medical Sciences, RIKEN, Tokyo 108-8639, Japan. ; 1] Cell Induction and Regulation Field, Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan [2] Japan Science and Technology Agency, CREST, Tokyo 102-0075, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25231866" target="_blank"〉PubMed〈/a〉
    Keywords: Achondroplasia/*drug therapy/genetics/*pathology ; Animals ; Bone Development/drug effects ; Cartilage/cytology/drug effects/pathology ; Cell Differentiation ; Chondrocytes/cytology/pathology ; Disease Models, Animal ; Female ; Fluorobenzenes/administration & dosage/pharmacology/therapeutic use ; Hydroxymethylglutaryl-CoA Reductase Inhibitors/administration & ; dosage/pharmacology/*therapeutic use ; Induced Pluripotent Stem Cells/cytology/pathology ; Lovastatin/pharmacology/therapeutic use ; Male ; Mice ; Mice, Inbred C57BL ; Phenotype ; Pyrimidines/administration & dosage/pharmacology/therapeutic use ; Receptor, Fibroblast Growth Factor, Type 3/*deficiency/*genetics ; Rosuvastatin Calcium ; Sulfonamides/administration & dosage/pharmacology/therapeutic use ; Thanatophoric Dysplasia/*drug therapy/genetics/*pathology
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  • 28
    Publication Date: 2014-04-18
    Description: Ice volume (and hence sea level) and deep-sea temperature are key measures of global climate change. Sea level has been documented using several independent methods over the past 0.5 million years (Myr). Older periods, however, lack such independent validation; all existing records are related to deep-sea oxygen isotope (delta(18)O) data that are influenced by processes unrelated to sea level. For deep-sea temperature, only one continuous high-resolution (Mg/Ca-based) record exists, with related sea-level estimates, spanning the past 1.5 Myr. Here we present a novel sea-level reconstruction, with associated estimates of deep-sea temperature, which independently validates the previous 0-1.5 Myr reconstruction and extends it back to 5.3 Myr ago. We find that deep-sea temperature and sea level generally decreased through time, but distinctly out of synchrony, which is remarkable given the importance of ice-albedo feedbacks on the radiative forcing of climate. In particular, we observe a large temporal offset during the onset of Plio-Pleistocene ice ages, between a marked cooling step at 2.73 Myr ago and the first major glaciation at 2.15 Myr ago. Last, we tentatively infer that ice sheets may have grown largest during glacials with more modest reductions in deep-sea temperature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rohling, E J -- Foster, G L -- Grant, K M -- Marino, G -- Roberts, A P -- Tamisiea, M E -- Williams, F -- England -- Nature. 2014 Apr 24;508(7497):477-82. doi: 10.1038/nature13230. Epub 2014 Apr 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Research School of Earth Sciences, The Australian National University, Canberra 0200, Australia [2] Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton SO14 3ZH, UK. ; Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton SO14 3ZH, UK. ; Research School of Earth Sciences, The Australian National University, Canberra 0200, Australia. ; National Oceanography Centre, Joseph Proudman Building, Liverpool L3 5DA, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24739960" target="_blank"〉PubMed〈/a〉
    Keywords: Foraminifera ; History, Ancient ; Ice Cover ; Mediterranean Sea ; Oxygen Isotopes ; Reproducibility of Results ; Seawater/*analysis ; *Temperature ; Time Factors
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  • 29
    Publication Date: 2014-05-09
    Description: Electromagnetic noise is emitted everywhere humans use electronic devices. For decades, it has been hotly debated whether man-made electric and magnetic fields affect biological processes, including human health. So far, no putative effect of anthropogenic electromagnetic noise at intensities below the guidelines adopted by the World Health Organization has withstood the test of independent replication under truly blinded experimental conditions. No effect has therefore been widely accepted as scientifically proven. Here we show that migratory birds are unable to use their magnetic compass in the presence of urban electromagnetic noise. When European robins, Erithacus rubecula, were exposed to the background electromagnetic noise present in unscreened wooden huts at the University of Oldenburg campus, they could not orient using their magnetic compass. Their magnetic orientation capabilities reappeared in electrically grounded, aluminium-screened huts, which attenuated electromagnetic noise in the frequency range from 50 kHz to 5 MHz by approximately two orders of magnitude. When the grounding was removed or when broadband electromagnetic noise was deliberately generated inside the screened and grounded huts, the birds again lost their magnetic orientation capabilities. The disruptive effect of radiofrequency electromagnetic fields is not confined to a narrow frequency band and birds tested far from sources of electromagnetic noise required no screening to orient with their magnetic compass. These fully double-blinded tests document a reproducible effect of anthropogenic electromagnetic noise on the behaviour of an intact vertebrate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Engels, Svenja -- Schneider, Nils-Lasse -- Lefeldt, Nele -- Hein, Christine Maira -- Zapka, Manuela -- Michalik, Andreas -- Elbers, Dana -- Kittel, Achim -- Hore, P J -- Mouritsen, Henrik -- England -- Nature. 2014 May 15;509(7500):353-6. doi: 10.1038/nature13290. Epub 2014 May 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Institut fur Biologie und Umweltwissenschaften, Universitat Oldenburg, D-26111 Oldenburg, Germany [2] Research Centre for Neurosensory Sciences, University of Oldenburg, D-26111 Oldenburg, Germany [3]. ; 1] Institut fur Biologie und Umweltwissenschaften, Universitat Oldenburg, D-26111 Oldenburg, Germany [2] Research Centre for Neurosensory Sciences, University of Oldenburg, D-26111 Oldenburg, Germany. ; Institute of Physics, University of Oldenburg, D-26111 Oldenburg, Germany. ; Department of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, Oxford OX1 3QZ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24805233" target="_blank"〉PubMed〈/a〉
    Keywords: Aluminum ; Animal Migration/*physiology ; Animals ; Cities ; Conservation of Natural Resources ; Double-Blind Method ; Electricity/adverse effects ; Electromagnetic Fields/*adverse effects ; Electronics/instrumentation ; Germany ; Housing ; *Magnetic Fields ; Orientation/*physiology ; Radio Waves/adverse effects ; Reproducibility of Results ; Seasons ; Songbirds/*physiology ; Universities
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  • 30
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    Nature Publishing Group (NPG)
    Publication Date: 2014-01-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abbott, Alison -- England -- Nature. 2014 Jan 9;505(7482):139-40. doi: 10.1038/505139a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24402259" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Clinical Trials as Topic/adverse effects/*ethics/legislation & ; jurisprudence/standards ; Confidentiality/legislation & jurisprudence ; Foundations ; Humans ; Italy ; Mesenchymal Stromal Cells/cytology ; Neural Stem Cells/cytology/transplantation ; Reproducibility of Results ; Stem Cell Transplantation/*adverse effects/*ethics/legislation & ; jurisprudence/standards ; Uncertainty
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  • 31
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    Nature Publishing Group (NPG)
    Publication Date: 2014-02-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nuzzo, Regina -- England -- Nature. 2014 Feb 13;506(7487):150-2. doi: 10.1038/506150a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gallaudet University in Washington DC.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24522584" target="_blank"〉PubMed〈/a〉
    Keywords: *Data Interpretation, Statistical ; Data Mining ; Reproducibility of Results ; Research Design/*standards
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  • 32
    Publication Date: 2014-10-23
    Description: Cancer is a multistep process that involves mutations and other alterations in oncogenes and tumour suppressor genes. Genome sequencing studies have identified a large collection of genetic alterations that occur in human cancers. However, the determination of which mutations are causally related to tumorigenesis remains a major challenge. Here we describe a novel CRISPR/Cas9-based approach for rapid functional investigation of candidate genes in well-established autochthonous mouse models of cancer. Using a Kras(G12D)-driven lung cancer model, we performed functional characterization of a panel of tumour suppressor genes with known loss-of-function alterations in human lung cancer. Cre-dependent somatic activation of oncogenic Kras(G12D) combined with CRISPR/Cas9-mediated genome editing of tumour suppressor genes resulted in lung adenocarcinomas with distinct histopathological and molecular features. This rapid somatic genome engineering approach enables functional characterization of putative cancer genes in the lung and other tissues using autochthonous mouse models. We anticipate that this approach can be used to systematically dissect the complex catalogue of mutations identified in cancer genome sequencing studies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4292871/" 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/PMC4292871/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanchez-Rivera, Francisco J -- Papagiannakopoulos, Thales -- Romero, Rodrigo -- Tammela, Tuomas -- Bauer, Matthew R -- Bhutkar, Arjun -- Joshi, Nikhil S -- Subbaraj, Lakshmipriya -- Bronson, Roderick T -- Xue, Wen -- Jacks, Tyler -- K99 CA169512/CA/NCI NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- R00 CA169512/CA/NCI NIH HHS/ -- T32 GM007287/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Dec 18;516(7531):428-31. doi: 10.1038/nature13906. Epub 2014 Oct 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA [2] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA. ; David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA. ; 1] Tufts University, Boston, Massachusetts 02115, USA [2] Harvard Medical School, Boston, Massachusetts 02115, USA. ; 1] David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA [2] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA [3] 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/25337879" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/*genetics/pathology ; Animals ; *Caspase 9 ; *Clustered Regularly Interspaced Short Palindromic Repeats ; Disease Models, Animal ; Genes, Tumor Suppressor ; *Genetic Engineering ; Genome/*genetics ; Humans ; Lentivirus/genetics ; Lung Neoplasms/*genetics/pathology ; Mice ; Mice, Inbred C57BL ; Models, Genetic ; Mutation/genetics
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  • 33
    Publication Date: 2014-02-28
    Description: Intermittent intense ultraviolet (UV) exposure represents an important aetiological factor in the development of malignant melanoma. The ability of UV radiation to cause tumour-initiating DNA mutations in melanocytes is now firmly established, but how the microenvironmental effects of UV radiation influence melanoma pathogenesis is not fully understood. Here we report that repetitive UV exposure of primary cutaneous melanomas in a genetically engineered mouse model promotes metastatic progression, independent of its tumour-initiating effects. UV irradiation enhanced the expansion of tumour cells along abluminal blood vessel surfaces and increased the number of lung metastases. This effect depended on the recruitment and activation of neutrophils, initiated by the release of high mobility group box 1 (HMGB1) from UV-damaged epidermal keratinocytes and driven by Toll-like receptor 4 (TLR4). The UV-induced neutrophilic inflammatory response stimulated angiogenesis and promoted the ability of melanoma cells to migrate towards endothelial cells and use selective motility cues on their surfaces. Our results not only reveal how UV irradiation of epidermal keratinocytes is sensed by the innate immune system, but also show that the resulting inflammatory response catalyses reciprocal melanoma-endothelial cell interactions leading to perivascular invasion, a phenomenon originally described as angiotropism in human melanomas by histopathologists. Angiotropism represents a hitherto underappreciated mechanism of metastasis that also increases the likelihood of intravasation and haematogenous dissemination. Consistent with our findings, ulcerated primary human melanomas with abundant neutrophils and reactive angiogenesis frequently show angiotropism and a high risk for metastases. Our work indicates that targeting the inflammation-induced phenotypic plasticity of melanoma cells and their association with endothelial cells represent rational strategies to specifically interfere with metastatic progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bald, Tobias -- Quast, Thomas -- Landsberg, Jennifer -- Rogava, Meri -- Glodde, Nicole -- Lopez-Ramos, Dorys -- Kohlmeyer, Judith -- Riesenberg, Stefanie -- van den Boorn-Konijnenberg, Debby -- Homig-Holzel, Cornelia -- Reuten, Raphael -- Schadow, Benjamin -- Weighardt, Heike -- Wenzel, Daniela -- Helfrich, Iris -- Schadendorf, Dirk -- Bloch, Wilhelm -- Bianchi, Marco E -- Lugassy, Claire -- Barnhill, Raymond L -- Koch, Manuel -- Fleischmann, Bernd K -- Forster, Irmgard -- Kastenmuller, Wolfgang -- Kolanus, Waldemar -- Holzel, Michael -- Gaffal, Evelyn -- Tuting, Thomas -- England -- Nature. 2014 Mar 6;507(7490):109-13. doi: 10.1038/nature13111. Epub 2014 Feb 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Experimental Dermatology, Department of Dermatology and Allergy, University of Bonn, 53115 Bonn, Germany. ; Molecular Immunology and Cell Biology, Life and Medical Sciences Institute, University of Bonn, 53115 Bonn, Germany. ; Unit for RNA Biology, Department of Clinical Chemistry and Clinical Pharmacology, University of Bonn, 53105 Bonn, Germany. ; Institute for Dental Research and Oral Musculoskeletal Biology, Center for Biochemistry, Medical Faculty, University of Cologne, D-50931 Cologne, Germany. ; Immunology and Environment, Life and Medical Sciences Institute, University of Bonn, 53115 Bonn, Germany. ; Institute for Physiology I, Life & Brain Center, University of Bonn, 53105 Bonn, Germany. ; Department of Dermatology, University Hospital Essen, 45122 Essen, Germany. ; Institute of Cardiovascular Research and Sport Medicine, Department of Molecular and Cellular Sport Medicine, German Sport University Cologne, 50933 Cologne, Germany. ; Division of Genetics and Cell Biology, San Raffaele University and Scientific Institute, 20132 Milan, Italy. ; Department of Pathology and Laboratory Medicine, Jonsson Comprehensive Cancer Center, University of California Los Angeles (UCLA) Medical Center, Los Angeles, California 90095, USA. ; Institutes of Molecular Medicine and Experimental Immunology, University of Bonn, 53105 Bonn, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24572365" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Movement/radiation effects ; Cell Transformation, Neoplastic/radiation effects ; Disease Models, Animal ; Disease Progression ; Female ; HMGB1 Protein/metabolism ; Immunity, Innate/radiation effects ; Inflammation/*etiology ; Keratinocytes/metabolism/pathology/radiation effects ; Lung Neoplasms/blood supply/etiology/*secondary ; Male ; Melanocytes/pathology/radiation effects ; Melanoma/*blood supply/etiology/*pathology ; Mice ; Mice, Inbred C57BL ; Neovascularization, Pathologic/etiology ; Neutrophils/immunology/metabolism ; Skin Neoplasms/blood supply/etiology/*pathology ; Sunburn/complications/*etiology ; Toll-Like Receptor 4/metabolism ; *Ultraviolet Rays
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  • 34
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    Nature Publishing Group (NPG)
    Publication Date: 2014-04-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cyranoski, David -- England -- Nature. 2014 Apr 17;508(7496):299. doi: 10.1038/508299a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24740046" target="_blank"〉PubMed〈/a〉
    Keywords: Acids/pharmacology ; Cell Dedifferentiation/drug effects ; Induced Pluripotent Stem Cells/cytology/drug effects ; Japan ; Lymphocytes/cytology/drug effects ; Pressure ; Reproducibility of Results ; Research Personnel/*ethics/*psychology/standards ; *Scientific Misconduct ; Stem Cell Research/*ethics ; Uncertainty
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  • 35
    Publication Date: 2014-05-16
    Description: Cell competition is an emerging principle underlying selection for cellular fitness during development and disease. Competition may be relevant for cancer, but an experimental link between defects in competition and tumorigenesis is elusive. In the thymus, T lymphocytes develop from precursors that are constantly replaced by bone-marrow-derived progenitors. Here we show that in mice this turnover is regulated by natural cell competition between 'young' bone-marrow-derived and 'old' thymus-resident progenitors that, although genetically identical, execute differential gene expression programs. Disruption of cell competition leads to progenitor self-renewal, upregulation of Hmga1, transformation, and T-cell acute lymphoblastic leukaemia (T-ALL) resembling the human disease in pathology, genomic lesions, leukaemia-associated transcripts, and activating mutations in Notch1. Hence, cell competition is a tumour suppressor mechanism in the thymus. Failure to select fit progenitors through cell competition may explain leukaemia in X-linked severe combined immune deficiency patients who showed thymus-autonomous T-cell development after therapy with gene-corrected autologous progenitors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martins, Vera C -- Busch, Katrin -- Juraeva, Dilafruz -- Blum, Carmen -- Ludwig, Carolin -- Rasche, Volker -- Lasitschka, Felix -- Mastitsky, Sergey E -- Brors, Benedikt -- Hielscher, Thomas -- Fehling, Hans Joerg -- Rodewald, Hans-Reimer -- England -- Nature. 2014 May 22;509(7501):465-70. doi: 10.1038/nature13317. Epub 2014 May 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Division of Cellular Immunology, German Cancer Research Center, D-69120 Heidelberg, Germany [2] Institute of Immunology, University of Ulm, D-89081 Ulm, Germany. ; Division of Cellular Immunology, German Cancer Research Center, D-69120 Heidelberg, Germany. ; Division of Theoretical Bioinformatics, German Cancer Research Center, D-69120 Heidelberg, Germany. ; Institute of Immunology, University of Ulm, D-89081 Ulm, Germany. ; Core Facility Small Animal MRI, University of Ulm, D-89081 Ulm, Germany. ; Institute of Pathology, University Hospital Heidelberg, Im Neuenheimer Feld 224, 69120 Heidelberg, Germany. ; Division of Biostatistics, German Cancer Research Center, D-69120 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24828041" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Division ; Cell Movement ; *Cell Transformation, Neoplastic/genetics ; Disease Progression ; Female ; Gene Expression Regulation, Neoplastic ; HMGA Proteins/genetics ; Hematopoietic Stem Cells/*cytology/metabolism ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/genetics/*pathology ; Receptor, Notch1/genetics ; T-Lymphocytes/cytology/metabolism/pathology ; Thymus Gland/*cytology/pathology ; Transcriptome/genetics
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  • 36
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    Nature Publishing Group (NPG)
    Publication Date: 2014-02-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bohle, Shannon -- England -- Nature. 2014 Feb 13;506(7487):159. doi: 10.1038/506159e.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24522589" target="_blank"〉PubMed〈/a〉
    Keywords: *Access to Information ; *Internet/economics ; *Laboratories ; Patents as Topic ; *Records as Topic/economics ; Reproducibility of Results ; United States
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  • 37
    Publication Date: 2014-07-22
    Description: Macrophages have an important role in the maintenance of tissue homeostasis. To perform this function, macrophages must have the capacity to monitor the functional states of their 'client cells': namely, the parenchymal cells in the various tissues in which macrophages reside. Tumours exhibit many features of abnormally developed organs, including tissue architecture and cellular composition. Similarly to macrophages in normal tissues and organs, macrophages in tumours (tumour-associated macrophages) perform some key homeostatic functions that allow tumour maintenance and growth. However, the signals involved in communication between tumours and macrophages are poorly defined. Here we show that lactic acid produced by tumour cells, as a by-product of aerobic or anaerobic glycolysis, has a critical function in signalling, through inducing the expression of vascular endothelial growth factor and the M2-like polarization of tumour-associated macrophages. Furthermore, we demonstrate that this effect of lactic acid is mediated by hypoxia-inducible factor 1alpha (HIF1alpha). Finally, we show that the lactate-induced expression of arginase 1 by macrophages has an important role in tumour growth. Collectively, these findings identify a mechanism of communication between macrophages and their client cells, including tumour cells. This communication most probably evolved to promote homeostasis in normal tissues but can also be engaged in tumours to promote their growth.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4301845/" 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/PMC4301845/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Colegio, Oscar R -- Chu, Ngoc-Quynh -- Szabo, Alison L -- Chu, Thach -- Rhebergen, Anne Marie -- Jairam, Vikram -- Cyrus, Nika -- Brokowski, Carolyn E -- Eisenbarth, Stephanie C -- Phillips, Gillian M -- Cline, Gary W -- Phillips, Andrew J -- Medzhitov, Ruslan -- 1 P50 CA121974/CA/NCI NIH HHS/ -- 1K08CA172580-01/CA/NCI NIH HHS/ -- 5KL2RR024138/RR/NCRR NIH HHS/ -- AI046688/AI/NIAID NIH HHS/ -- AI089771/AI/NIAID NIH HHS/ -- CA157461/CA/NCI NIH HHS/ -- K08 CA172580/CA/NCI NIH HHS/ -- P30 CA016359/CA/NCI NIH HHS/ -- R01 AI089771/AI/NIAID NIH HHS/ -- R01 CA157461/CA/NCI NIH HHS/ -- R37 AI046688/AI/NIAID NIH HHS/ -- UL1 TR000142/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Sep 25;513(7519):559-63. doi: 10.1038/nature13490. Epub 2014 Jul 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06519-1612, USA [2] Department of Dermatology, Yale University School of Medicine, New Haven, Connecticut 06520-8059, USA [3] Yale-New Haven Transplantation Center, Yale University School of Medicine, New Haven, Connecticut 06519-1369, USA [4] Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut 06520-8028, USA. ; Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06519-1612, USA. ; 1] Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06519-1612, USA [2] Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut 06520-8035, USA. ; Department of Chemistry, Yale University School of Medicine, New Haven, Connecticut 06520-8107, USA. ; Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut 06520-8020, USA. ; 1] Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06519-1612, USA [2] Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut 06520-8028, USA [3] Howard Hughes Medical Institute, Chevy Chase, Maryland 20815-6789, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25043024" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arginase/genetics/metabolism ; Carcinoma, Lewis Lung/pathology ; Cell Communication/drug effects ; Cell Division/drug effects ; Culture Media, Conditioned/chemistry/pharmacology ; Female ; Glycolysis ; Homeostasis ; Hypoxia-Inducible Factor 1, alpha Subunit/metabolism ; Lactic Acid/*metabolism/pharmacology ; Macrophages/*metabolism/*pathology ; Male ; Melanoma, Experimental/pathology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Neoplasms/*metabolism/*pathology ; RNA, Messenger/analysis/genetics ; Solubility ; Up-Regulation/drug effects ; Vascular Endothelial Growth Factor A/genetics/metabolism
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  • 38
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    Nature Publishing Group (NPG)
    Publication Date: 2014-02-01
    Description: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4058759/" 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/PMC4058759/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Collins, Francis S -- Tabak, Lawrence A -- Z99 OD999999/Intramural NIH HHS/ -- England -- Nature. 2014 Jan 30;505(7485):612-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24482835" target="_blank"〉PubMed〈/a〉
    Keywords: Access to Information ; Animals ; Biomedical Research/*standards ; Disclosure/standards ; Female ; Humans ; Male ; *National Institutes of Health (U.S.) ; Pilot Projects ; Reproducibility of Results ; Research Design/*standards ; Scientific Misconduct/statistics & numerical data ; Sex Characteristics ; United States
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  • 39
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2014-05-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, Vivien -- England -- Nature. 2014 May 29;509(7502):645-9. doi: 10.1038/509645a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Nature and Nature Methods.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24870547" target="_blank"〉PubMed〈/a〉
    Keywords: Anatomy, Artistic ; Antibodies/analysis/immunology ; Antibody Specificity ; Atlases as Topic ; Automation ; *Gene Expression Profiling ; High-Throughput Nucleotide Sequencing ; Humans ; Immunohistochemistry ; Organ Specificity ; Protein Transport ; Proteome/analysis/genetics/*metabolism/secretion ; Reproducibility of Results ; Staining and Labeling ; Tissue Array Analysis
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  • 40
    Publication Date: 2014-11-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barbier, Edward B -- England -- Nature. 2014 Nov 6;515(7525):32-3. doi: 10.1038/515032a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Wyoming, Laramie, Wyoming, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25373661" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Conservation of Natural Resources/*economics/*statistics & numerical data ; *Ecosystem ; *Models, Economic ; Pilot Projects ; Reproducibility of Results ; Rhizophoraceae ; Thailand ; Wood
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  • 41
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    Nature Publishing Group (NPG)
    Publication Date: 2014-04-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Katsnelson, Alla -- England -- Nature. 2014 Apr 3;508(7494):S8-9. doi: 10.1038/508S8a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24695336" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antipsychotic Agents/therapeutic use ; Cognition/physiology ; Cognition Disorders/drug therapy/pathology/physiopathology ; *Disease Models, Animal ; Drug Discovery/*methods/standards ; Humans ; Mice ; Mice, Transgenic ; Multifactorial Inheritance/genetics ; Rats ; Reproducibility of Results ; *Schizophrenia/chemically induced/drug therapy/etiology/physiopathology
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  • 42
    Publication Date: 2014-07-22
    Description: Eukaryotic cells coordinately control anabolic and catabolic processes to maintain cell and tissue homeostasis. Mechanistic target of rapamycin complex 1 (mTORC1) promotes nutrient-consuming anabolic processes, such as protein synthesis. Here we show that as well as increasing protein synthesis, mTORC1 activation in mouse and human cells also promotes an increased capacity for protein degradation. Cells with activated mTORC1 exhibited elevated levels of intact and active proteasomes through a global increase in the expression of genes encoding proteasome subunits. The increase in proteasome gene expression, cellular proteasome content, and rates of protein turnover downstream of mTORC1 were all dependent on induction of the transcription factor nuclear factor erythroid-derived 2-related factor 1 (NRF1; also known as NFE2L1). Genetic activation of mTORC1 through loss of the tuberous sclerosis complex tumour suppressors, TSC1 or TSC2, or physiological activation of mTORC1 in response to growth factors or feeding resulted in increased NRF1 expression in cells and tissues. We find that this NRF1-dependent elevation in proteasome levels serves to increase the intracellular pool of amino acids, which thereby influences rates of new protein synthesis. Therefore, mTORC1 signalling increases the efficiency of proteasome-mediated protein degradation for both quality control and as a mechanism to supply substrate for sustained protein synthesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4402229/" 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/PMC4402229/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Yinan -- Nicholatos, Justin -- Dreier, John R -- Ricoult, Stephane J H -- Widenmaier, Scott B -- Hotamisligil, Gokhan S -- Kwiatkowski, David J -- Manning, Brendan D -- CA120964/CA/NCI NIH HHS/ -- CA122617/CA/NCI NIH HHS/ -- P01 CA120964/CA/NCI NIH HHS/ -- R01 CA122617/CA/NCI NIH HHS/ -- Canadian Institutes of Health Research/Canada -- England -- Nature. 2014 Sep 18;513(7518):440-3. doi: 10.1038/nature13492. Epub 2014 Jul 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, Massachusetts 02115, USA. ; Translational Medicine Division, 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/25043031" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/metabolism ; Animals ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Multiprotein Complexes/*metabolism ; Nuclear Respiratory Factor 1/genetics/metabolism ; Proteasome Endopeptidase Complex/genetics/metabolism ; *Protein Biosynthesis ; Proteins/chemistry/*metabolism ; *Proteolysis ; Signal Transduction ; Sterol Regulatory Element Binding Protein 1/metabolism ; TOR Serine-Threonine Kinases/*metabolism ; Transcription, Genetic
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  • 43
    Publication Date: 2014-04-04
    Description: Cancers have dysfunctional redox regulation resulting in reactive oxygen species production, damaging both DNA and free dNTPs. The MTH1 protein sanitizes oxidized dNTP pools to prevent incorporation of damaged bases during DNA replication. Although MTH1 is non-essential in normal cells, we show that cancer cells require MTH1 activity to avoid incorporation of oxidized dNTPs, resulting in DNA damage and cell death. We validate MTH1 as an anticancer target in vivo and describe small molecules TH287 and TH588 as first-in-class nudix hydrolase family inhibitors that potently and selectively engage and inhibit the MTH1 protein in cells. Protein co-crystal structures demonstrate that the inhibitors bind in the active site of MTH1. The inhibitors cause incorporation of oxidized dNTPs in cancer cells, leading to DNA damage, cytotoxicity and therapeutic responses in patient-derived mouse xenografts. This study exemplifies the non-oncogene addiction concept for anticancer treatment and validates MTH1 as being cancer phenotypic lethal.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gad, Helge -- Koolmeister, Tobias -- Jemth, Ann-Sofie -- Eshtad, Saeed -- Jacques, Sylvain A -- Strom, Cecilia E -- Svensson, Linda M -- Schultz, Niklas -- Lundback, Thomas -- Einarsdottir, Berglind Osk -- Saleh, Aljona -- Gokturk, Camilla -- Baranczewski, Pawel -- Svensson, Richard -- Berntsson, Ronnie P-A -- Gustafsson, Robert -- Stromberg, Kia -- Sanjiv, Kumar -- Jacques-Cordonnier, Marie-Caroline -- Desroses, Matthieu -- Gustavsson, Anna-Lena -- Olofsson, Roger -- Johansson, Fredrik -- Homan, Evert J -- Loseva, Olga -- Brautigam, Lars -- Johansson, Lars -- Hoglund, Andreas -- Hagenkort, Anna -- Pham, Therese -- Altun, Mikael -- Gaugaz, Fabienne Z -- Vikingsson, Svante -- Evers, Bastiaan -- Henriksson, Martin -- Vallin, Karl S A -- Wallner, Olov A -- Hammarstrom, Lars G J -- Wiita, Elisee -- Almlof, Ingrid -- Kalderen, Christina -- Axelsson, Hanna -- Djureinovic, Tatjana -- Puigvert, Jordi Carreras -- Haggblad, Maria -- Jeppsson, Fredrik -- Martens, Ulf -- Lundin, Cecilia -- Lundgren, Bo -- Granelli, Ingrid -- Jensen, Annika Jenmalm -- Artursson, Per -- Nilsson, Jonas A -- Stenmark, Pal -- Scobie, Martin -- Berglund, Ulrika Warpman -- Helleday, Thomas -- England -- Nature. 2014 Apr 10;508(7495):215-21. doi: 10.1038/nature13181. Epub 2014 Apr 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-171 21 Stockholm, Sweden [2]. ; Department of Biochemistry and Biophysics, Stockholm University, S-106 91 Stockholm, Sweden. ; Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-171 21 Stockholm, Sweden. ; 1] Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-171 21 Stockholm, Sweden [2] Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-171 21 Stockholm, Sweden. ; Sahlgrenska Translational Melanoma Group, Sahlgrenska Cancer Center, Department of Surgery, University of Gothenburg and Sahlgrenska University Hospital, S-405 30 Gothenburg, Sweden. ; Department of Analytical Chemistry, Stockholm University, S-106 91 Stockholm, Sweden. ; 1] Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-171 21 Stockholm, Sweden [2] Uppsala University Drug Optimization and Pharmaceutical Profiling Platform, Department of Pharmacy, Uppsala University, S-751 23 Uppsala, Sweden. ; 1] Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-171 21 Stockholm, Sweden [2] Uppsala University Drug Optimization and Pharmaceutical Profiling Platform, Department of Pharmacy, Uppsala University, S-751 23 Uppsala, Sweden. ; Department of Genetics, Microbiology and Toxicology, Stockholm University, S-106 91 Stockholm, Sweden. ; 1] Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-171 21 Stockholm, Sweden [2] Clinical Pharmacology, Department of Medical and Health Sciences, Linkoping University, S-58185 Linkoping, Sweden. ; 1] Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-171 21 Stockholm, Sweden [2] Division of Molecular Carcinogenesis, The Netherlands Cancer Institute, 1006 Amsterdam, The Netherlands (B.E.); Department of Immunology, Genetics, and Pathology, Uppsala University, S-751 23 Uppsala, Sweden (T.D.). ; 1] Department of Genetics, Microbiology and Toxicology, Stockholm University, S-106 91 Stockholm, Sweden [2] Division of Molecular Carcinogenesis, The Netherlands Cancer Institute, 1006 Amsterdam, The Netherlands (B.E.); Department of Immunology, Genetics, and Pathology, Uppsala University, S-751 23 Uppsala, Sweden (T.D.). ; Science for Life Laboratory, RNAi Cell Screening Facility, Department of Biochemistry and Biophysics, Stockholm University, S-106 91 Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24695224" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Catalytic Domain ; Cell Death/drug effects ; Cell Survival/drug effects ; Crystallization ; DNA Damage ; DNA Repair Enzymes/*antagonists & inhibitors/chemistry/metabolism ; Deoxyguanine Nucleotides/metabolism ; Enzyme Inhibitors/chemistry/pharmacokinetics/pharmacology/therapeutic use ; Female ; Humans ; Male ; Mice ; Models, Molecular ; Molecular Conformation ; Molecular Targeted Therapy ; Neoplasms/*drug therapy/*metabolism/pathology ; Nucleotides/*metabolism ; Oxidation-Reduction/drug effects ; Phosphoric Monoester Hydrolases/*antagonists & inhibitors/chemistry/metabolism ; Pyrimidines/chemistry/pharmacokinetics/pharmacology/therapeutic use ; Pyrophosphatases/antagonists & inhibitors ; Reproducibility of Results ; Xenograft Model Antitumor Assays
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  • 44
    Publication Date: 2014-04-25
    Description: The discovery of rare genetic variants is accelerating, and clear guidelines for distinguishing disease-causing sequence variants from the many potentially functional variants present in any human genome are urgently needed. Without rigorous standards we risk an acceleration of false-positive reports of causality, which would impede the translation of genomic research findings into the clinical diagnostic setting and hinder biological understanding of disease. Here we discuss the key challenges of assessing sequence variants in human disease, integrating both gene-level and variant-level support for causality. We propose guidelines for summarizing confidence in variant pathogenicity and highlight several areas that require further resource development.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4180223/" 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/PMC4180223/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉MacArthur, D G -- Manolio, T A -- Dimmock, D P -- Rehm, H L -- Shendure, J -- Abecasis, G R -- Adams, D R -- Altman, R B -- Antonarakis, S E -- Ashley, E A -- Barrett, J C -- Biesecker, L G -- Conrad, D F -- Cooper, G M -- Cox, N J -- Daly, M J -- Gerstein, M B -- Goldstein, D B -- Hirschhorn, J N -- Leal, S M -- Pennacchio, L A -- Stamatoyannopoulos, J A -- Sunyaev, S R -- Valle, D -- Voight, B F -- Winckler, W -- Gunter, C -- P30 DK020595/DK/NIDDK NIH HHS/ -- P30 DK042086/DK/NIDDK NIH HHS/ -- R01 HG007022/HG/NHGRI NIH HHS/ -- R01 HL117626/HL/NHLBI NIH HHS/ -- R01 MH101810/MH/NIMH NIH HHS/ -- U54 HG006997/HG/NHGRI NIH HHS/ -- England -- Nature. 2014 Apr 24;508(7497):469-76. doi: 10.1038/nature13127.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Massachusetts 02114, USA [2] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA. ; Division of Genomic Medicine, National Human Genome Research Institute, Bethesda, Maryland 20892, USA. ; Division of Genetics, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA. ; 1] Laboratory for Molecular Medicine, Partners Healthcare Center for Personalized Genetic Medicine, Cambridge, Massachusetts 02139, USA [2] Department of Pathology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Department of Genome Sciences, University of Washington, Seattle, Washington 98115, USA. ; Department of Biostatistics, University of Michigan, Ann Arbor, Michigan 48109, USA. ; 1] NIH Undiagnosed Diseases Program, National Institutes of Health Office of Rare Diseases Research and National Human Genome Research Institute, Bethesda, Maryland 20892, USA [2] Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Departments of Bioengineering & Genetics, Stanford University, Stanford, California 94305, USA. ; 1] Department of Genetic Medicine, University of Geneva Medical School, 1211 Geneva, Switzerland [2] iGE3 Institute of Genetics and Genomics of Geneva, 1211 Geneva, Switzerland. ; Center for Inherited Cardiovascular Disease, Stanford University School of Medicine, Stanford, California 94305, USA. ; Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1HH, UK. ; Genetic Disease Research Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland 20892, USA. ; Departments of Genetics, Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri 63110, USA. ; HudsonAlpha Institute for Biotechnology, 601 Genome Way, Huntsville, Alabama 35806, USA. ; Section of Genetic Medicine, Department of Medicine, University of Chicago, Chicago, Illinois 60637, USA. ; 1] Program in Computational Biology and Bioinformatics, Yale University, New Haven, Connecticut 06520, USA [2] Departments of Computer Science, Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520, USA. ; Center for Human Genome Variation, Duke University School of Medicine, Durham, North Carolina 27708, USA. ; 1] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA [2] Divisions of Genetics and Endocrinology, Children's Hospital, Boston, Massachusetts 02115, USA. ; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030, USA. ; 1] Genomics Division, MS 84-171, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA [2] US Department of Energy Joint Genome Institute, Walnut Creek, California 94598, USA. ; Department of Genome Sciences, University of Washington, 1705 Northeast Pacific Street, Seattle, Washington 98195, USA. ; 1] Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA [2] Harvard Medical School, Boston, Massachusetts 02115, USA. ; McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA. ; Department of Pharmacology and Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania 19104, USA. ; 1] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA [2] Next Generation Diagnostics, Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, USA (W.W.); Marcus Autism Center, Children's Healthcare of Atlanta, Atlanta, Georgia 30329, USA (C.G.). ; 1] HudsonAlpha Institute for Biotechnology, 601 Genome Way, Huntsville, Alabama 35806, USA [2] Next Generation Diagnostics, Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, USA (W.W.); Marcus Autism Center, Children's Healthcare of Atlanta, Atlanta, Georgia 30329, USA (C.G.).〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24759409" target="_blank"〉PubMed〈/a〉
    Keywords: *Disease ; False Positive Reactions ; Genes/genetics ; Genetic Predisposition to Disease/*genetics ; Genetic Variation/*genetics ; *Guidelines as Topic ; Humans ; Information Dissemination ; Publishing ; Reproducibility of Results ; Research Design ; Translational Medical Research/standards
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  • 45
    Publication Date: 2014-07-22
    Description: 'Gain' of supernumerary copies of the 8q24.21 chromosomal region has been shown to be common in many human cancers and is associated with poor prognosis. The well-characterized myelocytomatosis (MYC) oncogene resides in the 8q24.21 region and is consistently co-gained with an adjacent 'gene desert' of approximately 2 megabases that contains the long non-coding RNA gene PVT1, the CCDC26 gene candidate and the GSDMC gene. Whether low copy-number gain of one or more of these genes drives neoplasia is not known. Here we use chromosome engineering in mice to show that a single extra copy of either the Myc gene or the region encompassing Pvt1, Ccdc26 and Gsdmc fails to advance cancer measurably, whereas a single supernumerary segment encompassing all four genes successfully promotes cancer. Gain of PVT1 long non-coding RNA expression was required for high MYC protein levels in 8q24-amplified human cancer cells. PVT1 RNA and MYC protein expression correlated in primary human tumours, and copy number of PVT1 was co-increased in more than 98% of MYC-copy-increase cancers. Ablation of PVT1 from MYC-driven colon cancer line HCT116 diminished its tumorigenic potency. As MYC protein has been refractory to small-molecule inhibition, the dependence of high MYC protein levels on PVT1 long non-coding RNA provides a much needed therapeutic target.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4767149/" 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/PMC4767149/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tseng, Yuen-Yi -- Moriarity, Branden S -- Gong, Wuming -- Akiyama, Ryutaro -- Tiwari, Ashutosh -- Kawakami, Hiroko -- Ronning, Peter -- Reuland, Brian -- Guenther, Kacey -- Beadnell, Thomas C -- Essig, Jaclyn -- Otto, George M -- O'Sullivan, M Gerard -- Largaespada, David A -- Schwertfeger, Kathryn L -- Marahrens, York -- Kawakami, Yasuhiko -- Bagchi, Anindya -- P30 CA077598/CA/NCI NIH HHS/ -- England -- Nature. 2014 Aug 7;512(7512):82-6. doi: 10.1038/nature13311. Epub 2014 Jun 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Cell Biology and Development, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA. ; 1] Masonic Cancer Center, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [2]. ; 1] Department of Genetics, Cell Biology and Development, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [2] Masonic Cancer Center, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [3]. ; 1] Department of Genetics, Cell Biology and Development, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [2] Stem Cell Institute, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA. ; 1] Masonic Cancer Center, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [2] Center for Bio-Design, Translational Health Science and Technology Institute, Gurgaon 122016, India. ; Department of Laboratory Medicine and Pathology, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA. ; Masonic Cancer Center, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA. ; 1] Department of Genetics, Cell Biology and Development, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [2] Masonic Cancer Center, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA. ; 1] Masonic Cancer Center, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [2] Department of Laboratory Medicine and Pathology, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [3]. ; 1] Department of Genetics, Cell Biology and Development, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [2]. ; 1] Department of Genetics, Cell Biology and Development, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [2] Stem Cell Institute, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA [3].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25043044" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Transformation, Neoplastic ; Chromosomes, Human, Pair 8/genetics ; DNA Copy Number Variations/*genetics ; Disease Models, Animal ; Gene Amplification/*genetics ; Gene Dosage/*genetics ; Genes, myc/*genetics ; HCT116 Cells ; Humans ; Mice ; Mice, Inbred C57BL ; Oncogene Protein p55(v-myc)/*genetics/metabolism ; Phenotype ; RNA, Long Noncoding/*genetics
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  • 46
    Publication Date: 2014-09-02
    Description: Long-term synaptic potentiation (LTP) is thought to be a key process in cortical synaptic network plasticity and memory formation. Hebbian forms of LTP depend on strong postsynaptic depolarization, which in many models is generated by action potentials that propagate back from the soma into dendrites. However, local dendritic depolarization has been shown to mediate these forms of LTP as well. As pyramidal cells in supragranular layers of the somatosensory cortex spike infrequently, it is unclear which of the two mechanisms prevails for those cells in vivo. Using whole-cell recordings in the mouse somatosensory cortex in vivo, we demonstrate that rhythmic sensory whisker stimulation efficiently induces synaptic LTP in layer 2/3 (L2/3) pyramidal cells in the absence of somatic spikes. The induction of LTP depended on the occurrence of NMDAR (N-methyl-d-aspartate receptor)-mediated long-lasting depolarizations, which bear similarities to dendritic plateau potentials. In addition, we show that whisker stimuli recruit synaptic networks that originate from the posteromedial complex of the thalamus (POm). Photostimulation of channelrhodopsin-2 expressing POm neurons generated NMDAR-mediated plateau potentials, whereas the inhibition of POm activity during rhythmic whisker stimulation suppressed the generation of those potentials and prevented whisker-evoked LTP. Taken together, our data provide evidence for sensory-driven synaptic LTP in vivo, in the absence of somatic spiking. Instead, LTP is mediated by plateau potentials that are generated through the cooperative activity of lemniscal and paralemniscal synaptic circuitry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gambino, Frederic -- Pages, Stephane -- Kehayas, Vassilis -- Baptista, Daniela -- Tatti, Roberta -- Carleton, Alan -- Holtmaat, Anthony -- England -- Nature. 2014 Nov 6;515(7525):116-9. doi: 10.1038/nature13664. Epub 2014 Aug 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Basic Neurosciences and the Center for Neuroscience, CMU, University of Geneva, 1 rue Michel Servet, 1211 Geneva, Switzerland [2] [3] Institute for Interdisciplinary Neuroscience (IINS), UMR 5297 CNRS and University of Bordeaux, 146 rue Leo-Saignat, 33077 Bordeaux, France. ; 1] Department of Basic Neurosciences and the Center for Neuroscience, CMU, University of Geneva, 1 rue Michel Servet, 1211 Geneva, Switzerland [2]. ; 1] Department of Basic Neurosciences and the Center for Neuroscience, CMU, University of Geneva, 1 rue Michel Servet, 1211 Geneva, Switzerland [2] Lemanic Neuroscience Doctoral School, 1 rue Michel Servet, 1211 Geneva, Switzerland. ; Department of Basic Neurosciences and the Center for Neuroscience, CMU, University of Geneva, 1 rue Michel Servet, 1211 Geneva, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25174710" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Dendrites/*physiology ; *Long-Term Potentiation ; Male ; Mice ; Mice, Inbred C57BL ; Physical Stimulation ; Receptors, N-Methyl-D-Aspartate/metabolism ; Rhodopsin/metabolism ; Somatosensory Cortex/*cytology/*physiology ; Thalamus/cytology/physiology ; Vibrissae/physiology
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  • 47
    Publication Date: 2014-12-30
    Description: The skin represents the primary interface between the host and the environment. This organ is also home to trillions of microorganisms that play an important role in tissue homeostasis and local immunity. Skin microbial communities are highly diverse and can be remodelled over time or in response to environmental challenges. How, in the context of this complexity, individual commensal microorganisms may differentially modulate skin immunity and the consequences of these responses for tissue physiology remains unclear. Here we show that defined commensals dominantly affect skin immunity and identify the cellular mediators involved in this specification. In particular, colonization with Staphylococcus epidermidis induces IL-17A(+) CD8(+) T cells that home to the epidermis, enhance innate barrier immunity and limit pathogen invasion. Commensal-specific T-cell responses result from the coordinated action of skin-resident dendritic cell subsets and are not associated with inflammation, revealing that tissue-resident cells are poised to sense and respond to alterations in microbial communities. This interaction may represent an evolutionary means by which the skin immune system uses fluctuating commensal signals to calibrate barrier immunity and provide heterologous protection against invasive pathogens. These findings reveal that the skin immune landscape is a highly dynamic environment that can be rapidly and specifically remodelled by encounters with defined commensals, findings that have profound implications for our understanding of tissue-specific immunity and pathologies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4667810/" 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/PMC4667810/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Naik, Shruti -- Bouladoux, Nicolas -- Linehan, Jonathan L -- Han, Seong-Ji -- Harrison, Oliver J -- Wilhelm, Christoph -- Conlan, Sean -- Himmelfarb, Sarah -- Byrd, Allyson L -- Deming, Clayton -- Quinones, Mariam -- Brenchley, Jason M -- Kong, Heidi H -- Tussiwand, Roxanne -- Murphy, Kenneth M -- Merad, Miriam -- Segre, Julia A -- Belkaid, Yasmine -- R01 CA173861/CA/NCI NIH HHS/ -- R01 CA190400/CA/NCI NIH HHS/ -- U01 AI095611/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- Intramural NIH HHS/ -- England -- Nature. 2015 Apr 2;520(7545):104-8. doi: 10.1038/nature14052. Epub 2015 Jan 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Immunity at Barrier Sites Initiative, National Institute of Allergy and Infectious Diseases, NIH, Bethesda 20892, USA [2] Mucosal Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland 20892, USA. ; Translational and Functional Genomics Branch, National Human Genome Research Institute, Bethesda, Maryland 20892, USA. ; 1] Immunity at Barrier Sites Initiative, National Institute of Allergy and Infectious Diseases, NIH, Bethesda 20892, USA [2] Mucosal Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland 20892, USA [3] Translational and Functional Genomics Branch, National Human Genome Research Institute, Bethesda, Maryland 20892, USA. ; Bioinformatics and Computational Bioscience Branch, National Institute of Allergy and Infectious Diseases, NIH Bethesda, Maryland 20892, USA. ; 1] Immunity at Barrier Sites Initiative, National Institute of Allergy and Infectious Diseases, NIH, Bethesda 20892, USA [2] Immunopathogenesis Section, Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, NIH Bethesda, Maryland 20892, USA. ; Dermatology Branch, National Cancer Institute, NIH Bethesda, Maryland 20892, USA. ; Howard Hughes Medical Institute, Department of Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri 63110, USA. ; Department of Oncological Sciences, Tisch Cancer Institute and Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25539086" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Bacterial/immunology ; CD8-Positive T-Lymphocytes/cytology/*immunology ; Dendritic Cells/cytology/*immunology ; Humans ; Immunity, Innate/immunology ; Interleukin-17/immunology ; Langerhans Cells/cytology/immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Primates ; Skin/cytology/*immunology/*microbiology ; Staphylococcus epidermidis/immunology ; Symbiosis/*immunology
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  • 48
    Publication Date: 2014-12-19
    Description: Naturally occurring variations of Polycomb repressive complex 1 (PRC1) comprise a core assembly of Polycomb group proteins and additional factors that include, surprisingly, autism susceptibility candidate 2 (AUTS2). Although AUTS2 is often disrupted in patients with neuronal disorders, the mechanism underlying the pathogenesis is unclear. We investigated the role of AUTS2 as part of a previously identified PRC1 complex (PRC1-AUTS2), and in the context of neurodevelopment. In contrast to the canonical role of PRC1 in gene repression, PRC1-AUTS2 activates transcription. Biochemical studies demonstrate that the CK2 component of PRC1-AUTS2 neutralizes PRC1 repressive activity, whereas AUTS2-mediated recruitment of P300 leads to gene activation. Chromatin immunoprecipitation followed by sequencing (ChIP-seq) demonstrated that AUTS2 regulates neuronal gene expression through promoter association. Conditional targeting of Auts2 in the mouse central nervous system (CNS) leads to various developmental defects. These findings reveal a natural means of subverting PRC1 activity, linking key epigenetic modulators with neuronal functions and diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4323097/" 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/PMC4323097/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gao, Zhonghua -- Lee, Pedro -- Stafford, James M -- von Schimmelmann, Melanie -- Schaefer, Anne -- Reinberg, Danny -- 1DP2MH100012-01/DP/NCCDPHP CDC HHS/ -- 1F32GM105275/GM/NIGMS NIH HHS/ -- 5T32CA160002/CA/NCI NIH HHS/ -- DP2 MH100012/MH/NIMH NIH HHS/ -- F32AA022842/AA/NIAAA NIH HHS/ -- GM-64844/GM/NIGMS NIH HHS/ -- P30 CA016087/CA/NCI NIH HHS/ -- R01 GM064844/GM/NIGMS NIH HHS/ -- T32 CA160002/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Dec 18;516(7531):349-54. doi: 10.1038/nature13921.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, New York University Langone School of Medicine, Department of Biochemistry and Molecular Pharmacology, New York, New York 10016, USA. ; Friedman Brain Institute, Department of Neuroscience, Mount Sinai School of Medicine, New York, New York 10029, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25519132" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/physiology ; Cell Cycle Proteins/genetics/*metabolism ; Central Nervous System/*metabolism ; Female ; Gene Expression Profiling ; Gene Expression Regulation/*genetics ; Gene Knockout Techniques ; Genotype ; HEK293 Cells ; Histones/metabolism ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Phosphorylation ; Proteins/genetics/*metabolism ; Ubiquitination
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  • 49
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    Nature Publishing Group (NPG)
    Publication Date: 2014-11-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉England -- Nature. 2014 Nov 6;515(7525):7. doi: 10.1038/515007a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25373636" target="_blank"〉PubMed〈/a〉
    Keywords: Biomedical Research/*standards ; *Guidelines as Topic ; Periodicals as Topic/*standards ; Quality Control ; Reproducibility of Results ; Research Report/*standards
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  • 50
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2014-10-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉England -- Nature. 2014 Oct 30;514(7524):536. doi: 10.1038/514536a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25355323" target="_blank"〉PubMed〈/a〉
    Keywords: Information Dissemination/*methods ; *Periodicals as Topic/standards ; Reproducibility of Results ; *Research ; *Software
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  • 51
    Publication Date: 2014-06-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pagan-Jimenez, Jaime R -- Rodriguez-Ramos, Reniel -- Oliver, Jose R -- England -- Nature. 2014 Jun 26;510(7506):473. doi: 10.1038/510473b.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Leiden University, the Netherlands. ; University of Puerto Rico, Utuado, Puerto Rico. ; University College London, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24965639" target="_blank"〉PubMed〈/a〉
    Keywords: Archaeology ; Bolivia/ethnology ; Crops, Agricultural/genetics/*history ; Culture ; DNA, Plant/analysis ; Feces/chemistry ; History, Ancient ; Humans ; Phylogeography ; Puerto Rico ; Reproducibility of Results ; *Zea mays/genetics
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  • 52
    Publication Date: 2014-01-15
    Description: Cells differentiate when transcription factors bind accessible cis-regulatory elements to establish specific gene expression programs. In differentiating embryonic stem cells, chromatin at lineage-restricted genes becomes sequentially accessible, probably by means of 'pioneer' transcription factor activity, but tissues may use other strategies in vivo. Lateral inhibition is a pervasive process in which one cell forces a different identity on its neighbours, and it is unclear how chromatin in equipotent progenitors undergoing lateral inhibition quickly enables distinct, transiently reversible cell fates. Here we report the chromatin and transcriptional underpinnings of differentiation in mouse small intestine crypts, where notch signalling mediates lateral inhibition to assign progenitor cells into absorptive or secretory lineages. Transcript profiles in isolated LGR5(+) intestinal stem cells and secretory and absorptive progenitors indicated that each cell population was distinct and the progenitors specified. Nevertheless, secretory and absorptive progenitors showed comparable levels of H3K4me2 and H3K27ac histone marks and DNase I hypersensitivity--signifying accessible, permissive chromatin-at most of the same cis-elements. Enhancers acting uniquely in progenitors were well demarcated in LGR5(+) intestinal stem cells, revealing early priming of chromatin for divergent transcriptional programs, and retained active marks well after lineages were specified. On this chromatin background, ATOH1, a secretory-specific transcription factor, controls lateral inhibition through delta-like notch ligand genes and also drives the expression of numerous secretory lineage genes. Depletion of ATOH1 from specified secretory cells converted them into functional enterocytes, indicating prolonged responsiveness of marked enhancers to the presence or absence of a key transcription factor. Thus, lateral inhibition and intestinal crypt lineage plasticity involve interaction of a lineage-restricted transcription factor with broadly permissive chromatin established in multipotent stem cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4151315/" 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/PMC4151315/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Tae-Hee -- Li, Fugen -- Ferreiro-Neira, Isabel -- Ho, Li-Lun -- Luyten, Annouck -- Nalapareddy, Kodandaramireddy -- Long, Henry -- Verzi, Michael -- Shivdasani, Ramesh A -- K01 DK088868/DK/NIDDK NIH HHS/ -- K01DK088868/DK/NIDDK NIH HHS/ -- K99 DK095983/DK/NIDDK NIH HHS/ -- K99DK095983/DK/NIDDK NIH HHS/ -- P50 CA127003/CA/NCI NIH HHS/ -- P50CA127003/CA/NCI NIH HHS/ -- R01 DK081113/DK/NIDDK NIH HHS/ -- R01 DK082889/DK/NIDDK NIH HHS/ -- R01DK081113/DK/NIDDK NIH HHS/ -- R01DK082889/DK/NIDDK NIH HHS/ -- England -- Nature. 2014 Feb 27;506(7489):511-5. doi: 10.1038/nature12903. Epub 2014 Jan 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA [2] Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24413398" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basic Helix-Loop-Helix Transcription Factors/deficiency/metabolism ; Cell Differentiation/*genetics ; Cell Lineage/genetics ; Chromatin/*genetics/*metabolism ; Deoxyribonuclease I/metabolism ; Enhancer Elements, Genetic/genetics ; Enterocytes/cytology/metabolism ; Female ; *Gene Expression Regulation ; Histones/metabolism ; Intestine, Small/cytology/*metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Receptors, Notch/metabolism ; Stem Cells/cytology/metabolism ; Transcription, Genetic
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  • 53
    Publication Date: 2014-07-22
    Description: Mutations that deregulate Notch1 and Ras/phosphoinositide 3 kinase (PI3K)/Akt signalling are prevalent in T-cell acute lymphoblastic leukaemia (T-ALL), and often coexist. Here we show that the PI3K inhibitor GDC-0941 is active against primary T-ALLs from wild-type and Kras(G12D) mice, and addition of the MEK inhibitor PD0325901 increases its efficacy. Mice invariably relapsed after treatment with drug-resistant clones, most of which unexpectedly had reduced levels of activated Notch1 protein, downregulated many Notch1 target genes, and exhibited cross-resistance to gamma-secretase inhibitors. Multiple resistant primary T-ALLs that emerged in vivo did not contain somatic Notch1 mutations present in the parental leukaemia. Importantly, resistant clones upregulated PI3K signalling. Consistent with these data, inhibiting Notch1 activated the PI3K pathway, providing a likely mechanism for selection against oncogenic Notch1 signalling. These studies validate PI3K as a therapeutic target in T-ALL and raise the unexpected possibility that dual inhibition of PI3K and Notch1 signalling could promote drug resistance in T-ALL.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4213126/" 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/PMC4213126/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dail, Monique -- Wong, Jason -- Lawrence, Jessica -- O'Connor, Daniel -- Nakitandwe, Joy -- Chen, Shann-Ching -- Xu, Jin -- Lee, Leslie B -- Akagi, Keiko -- Li, Qing -- Aster, Jon C -- Pear, Warren S -- Downing, James R -- Sampath, Deepak -- Shannon, Kevin -- K08 CA134649/CA/NCI NIH HHS/ -- K99 CA157950/CA/NCI NIH HHS/ -- P01 CA119070/CA/NCI NIH HHS/ -- P30 CA021765/CA/NCI NIH HHS/ -- R01 CA180037/CA/NCI NIH HHS/ -- R37 CA072614/CA/NCI NIH HHS/ -- R37 CA72614/CA/NCI NIH HHS/ -- U01 CA084221/CA/NCI NIH HHS/ -- England -- Nature. 2014 Sep 25;513(7519):512-6. doi: 10.1038/nature13495. Epub 2014 Jul 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics and Benniof Children's Hospital, University of California, San Francisco, California 94143, USA. ; Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA. ; Department of Translational Oncology, Genentech Inc., South San Francisco, California 94080, USA. ; Department of Molecular Virology, Immunology and Medical Genetics, Ohio State University, Columbus, Ohio 43210, USA. ; Division of Haematology/Oncology, Department of Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA. ; Department of Pathology, Brigham &Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Abramson Family Cancer Research Institute and the Department of Pathology and Laboratory Medicine, 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/25043004" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzamides/pharmacology/therapeutic use ; Clone Cells/drug effects/metabolism/pathology ; Diphenylamine/analogs & derivatives/pharmacology/therapeutic use ; Down-Regulation/drug effects ; *Drug Resistance, Neoplasm/drug effects/genetics ; Drug Synergism ; Genes, ras/genetics ; Indazoles/*pharmacology/therapeutic use ; Male ; Mice ; Mice, Inbred C57BL ; Mitogen-Activated Protein Kinase Kinases/antagonists & inhibitors ; Phosphatidylinositol 3-Kinases/*antagonists & inhibitors ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/*drug ; therapy/*genetics/metabolism/pathology ; Protein Kinase Inhibitors/*pharmacology/therapeutic use ; Protein Structure, Tertiary ; Proto-Oncogene Proteins c-akt/metabolism ; Receptor, Notch1/chemistry/deficiency/genetics/*metabolism ; Signal Transduction/drug effects ; Sulfonamides/*pharmacology/therapeutic use
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  • 54
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2014-11-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Butler, Declan -- England -- Nature. 2014 Nov 6;515(7525):18. doi: 10.1038/515018a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25373654" target="_blank"〉PubMed〈/a〉
    Keywords: Disaster Planning/methods ; Disease Outbreaks/*statistics & numerical data ; Hemorrhagic Fever, Ebola/*epidemiology/*transmission ; Humans ; Liberia/epidemiology ; *Models, Biological ; Reproducibility of Results ; Uncertainty
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  • 55
    Publication Date: 2014-07-22
    Description: A comprehensive account of the causes of alcohol misuse must accommodate individual differences in biology, psychology and environment, and must disentangle cause and effect. Animal models can demonstrate the effects of neurotoxic substances; however, they provide limited insight into the psycho-social and higher cognitive factors involved in the initiation of substance use and progression to misuse. One can search for pre-existing risk factors by testing for endophenotypic biomarkers in non-using relatives; however, these relatives may have personality or neural resilience factors that protect them from developing dependence. A longitudinal study has potential to identify predictors of adolescent substance misuse, particularly if it can incorporate a wide range of potential causal factors, both proximal and distal, and their influence on numerous social, psychological and biological mechanisms. Here we apply machine learning to a wide range of data from a large sample of adolescents (n = 692) to generate models of current and future adolescent alcohol misuse that incorporate brain structure and function, individual personality and cognitive differences, environmental factors (including gestational cigarette and alcohol exposure), life experiences, and candidate genes. These models were accurate and generalized to novel data, and point to life experiences, neurobiological differences and personality as important antecedents of binge drinking. By identifying the vulnerability factors underlying individual differences in alcohol misuse, these models shed light on the aetiology of alcohol misuse and suggest targets for prevention.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4486207/" 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/PMC4486207/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Whelan, Robert -- Watts, Richard -- Orr, Catherine A -- Althoff, Robert R -- Artiges, Eric -- Banaschewski, Tobias -- Barker, Gareth J -- Bokde, Arun L W -- Buchel, Christian -- Carvalho, Fabiana M -- Conrod, Patricia J -- Flor, Herta -- Fauth-Buhler, Mira -- Frouin, Vincent -- Gallinat, Juergen -- Gan, Gabriela -- Gowland, Penny -- Heinz, Andreas -- Ittermann, Bernd -- Lawrence, Claire -- Mann, Karl -- Martinot, Jean-Luc -- Nees, Frauke -- Ortiz, Nick -- Paillere-Martinot, Marie-Laure -- Paus, Tomas -- Pausova, Zdenka -- Rietschel, Marcella -- Robbins, Trevor W -- Smolka, Michael N -- Strohle, Andreas -- Schumann, Gunter -- Garavan, Hugh -- IMAGEN Consortium -- MH082116/MH/NIMH NIH HHS/ -- P20 GM103644/GM/NIGMS NIH HHS/ -- P20GM103644/GM/NIGMS NIH HHS/ -- P50 DA036114/DA/NIDA NIH HHS/ -- P50DA036114/DA/NIDA NIH HHS/ -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2014 Aug 14;512(7513):185-9. doi: 10.1038/nature13402. Epub 2014 Jul 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Psychiatry, University of Vermont, Burlington, Vermont 05401, USA [2] Department of Psychology, University College Dublin, Dublin 4, Ireland. ; Department of Radiology, University of Vermont, Burlington, Vermont 05401, USA. ; Vermont Center for Children, Youth, and Families, University of Vermont, Burlington, Vermont 05401, USA. ; 1] Department of Pediatrics, University of Vermont, Burlington, Vermont 05401, USA [2] Department of Psychology, University of Vermont, Burlington, Vermont 05401, USA. ; 1] Institut National de la Sante et de la Recherche Medicale, INSERM CEA Unit 1000 "Imaging &Psychiatry", University Paris Sud, 91400 Orsay, France [2] Department of Psychiatry, Orsay Hospital, 4 place du General Leclerc, 91400 Orsay, France. ; Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, 68159 Mannheim, Germany. ; Institute of Psychiatry, King's College London, London SE5 8AF, UK. ; Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland. ; 1] Department of Systems Neuroscience, Universitatsklinikum Hamburg Eppendorf, 20246 Hamburg, Germany [2] Department of Psychology, Stanford University, Stanford, California 94305, USA. ; 1] Institute of Psychiatry, King's College London, London SE5 8AF, UK [2] Department of Psychiatry, Universite de Montreal, CHU Ste Justine Hospital, Montreal H3T 1C5, Canada. ; 1] Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, 68159 Mannheim, Germany [2] Department of Addictive Behaviour and Addiction Medicine, Heidelberg University, 68159 Mannheim, Germany. ; 14 CEA, DSV, I2BM, Neurospin bat 145, 91191 Gif-Sur-Yvette, France. ; 1] Department of Systems Neuroscience, Universitatsklinikum Hamburg Eppendorf, 20246 Hamburg, Germany [2] Department of Psychiatry and Psychotherapy, Campus Charite Mitte, Charite-Universitatsmedizin Berlin 10117, Germany. ; Department of Psychiatry and Neuroimaging Center, Technische Universitat Dresden, 01062 Dresden, Germany. ; School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK. ; Department of Psychiatry and Psychotherapy, Campus Charite Mitte, Charite-Universitatsmedizin Berlin 10117, Germany. ; Physikalisch-Technische Bundesanstalt (PTB), 10587 Berlin, Germany. ; School of Psychology, University of Nottingham, Nottingham NG7 2RD, UK. ; 1] Institut National de la Sante et de la Recherche Medicale, INSERM CEA Unit 1000 "Imaging &Psychiatry", University Paris Sud, 91400 Orsay, France [2] AP-HP Department of Adolescent Psychopathology and Medicine, Maison de Solenn, University Paris Descartes, 75006 Paris, France. ; 1] Department of Psychiatry, University of Vermont, Burlington, Vermont 05401, USA [2] Neuroscience Graduate Program, University of Vermont, Burlington, Vermont 05401, USA. ; 1] Department of Psychiatry and Psychotherapy, Campus Charite Mitte, Charite-Universitatsmedizin Berlin 10117, Germany [2] AP-HP Department of Adolescent Psychopathology and Medicine, Maison de Solenn, University Paris Descartes, 75006 Paris, France. ; 1] Rotman Research Institute, University of Toronto, Toronto, Ontario M5R 0A3, Canada [2] Montreal Neurological Institute, McGill University, H3A 2B4, Canada. ; The Hospital for Sick Children, University of Toronto, Toronto, Ontario M5G 0A4, Canada. ; Behavioural and Clinical Neuroscience Institute and Department of Psychology, University of Cambridge, Cambridge CB2 1TN, UK. ; 1] Institute of Psychiatry, King's College London, London SE5 8AF, UK [2] MRC Social, Genetic and Developmental Psychiatry (SGDP) Centre, London, London WC2R 2LS, UK. ; 1] Department of Psychiatry, University of Vermont, Burlington, Vermont 05401, USA [2] Department of Psychology, University of Vermont, Burlington, Vermont 05401, USA [3] Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25043041" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Alcohol Drinking/*psychology ; Alcoholism/genetics/prevention & control/*psychology ; Artificial Intelligence ; Brain/physiology ; Cognition/physiology ; Environment ; Humans ; Life Change Events ; Longitudinal Studies ; *Models, Theoretical ; Personality/physiology ; Polymorphism, Single Nucleotide ; Psychology ; Reproducibility of Results ; Risk Factors
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  • 56
    Publication Date: 2014-04-11
    Description: In obesity and type 2 diabetes, Glut4 glucose transporter expression is decreased selectively in adipocytes. Adipose-specific knockout or overexpression of Glut4 alters systemic insulin sensitivity. Here we show, using DNA array analyses, that nicotinamide N-methyltransferase (Nnmt) is the most strongly reciprocally regulated gene when comparing gene expression in white adipose tissue (WAT) from adipose-specific Glut4-knockout or adipose-specific Glut4-overexpressing mice with their respective controls. NNMT methylates nicotinamide (vitamin B3) using S-adenosylmethionine (SAM) as a methyl donor. Nicotinamide is a precursor of NAD(+), an important cofactor linking cellular redox states with energy metabolism. SAM provides propylamine for polyamine biosynthesis and donates a methyl group for histone methylation. Polyamine flux including synthesis, catabolism and excretion, is controlled by the rate-limiting enzymes ornithine decarboxylase (ODC) and spermidine-spermine N(1)-acetyltransferase (SSAT; encoded by Sat1) and by polyamine oxidase (PAO), and has a major role in energy metabolism. We report that NNMT expression is increased in WAT and liver of obese and diabetic mice. Nnmt knockdown in WAT and liver protects against diet-induced obesity by augmenting cellular energy expenditure. NNMT inhibition increases adipose SAM and NAD(+) levels and upregulates ODC and SSAT activity as well as expression, owing to the effects of NNMT on histone H3 lysine 4 methylation in adipose tissue. Direct evidence for increased polyamine flux resulting from NNMT inhibition includes elevated urinary excretion and adipocyte secretion of diacetylspermine, a product of polyamine metabolism. NNMT inhibition in adipocytes increases oxygen consumption in an ODC-, SSAT- and PAO-dependent manner. Thus, NNMT is a novel regulator of histone methylation, polyamine flux and NAD(+)-dependent SIRT1 signalling, and is a unique and attractive target for treating obesity and type 2 diabetes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4107212/" 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/PMC4107212/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kraus, Daniel -- Yang, Qin -- Kong, Dong -- Banks, Alexander S -- Zhang, Lin -- Rodgers, Joseph T -- Pirinen, Eija -- Pulinilkunnil, Thomas C -- Gong, Fengying -- Wang, Ya-chin -- Cen, Yana -- Sauve, Anthony A -- Asara, John M -- Peroni, Odile D -- Monia, Brett P -- Bhanot, Sanjay -- Alhonen, Leena -- Puigserver, Pere -- Kahn, Barbara B -- K01 DK094943/DK/NIDDK NIH HHS/ -- K08 DK090149/DK/NIDDK NIH HHS/ -- P01 CA120964/CA/NCI NIH HHS/ -- P01CA120964/CA/NCI NIH HHS/ -- P30 DK040561/DK/NIDDK NIH HHS/ -- P30 DK0460200/DK/NIDDK NIH HHS/ -- P30 DK046200/DK/NIDDK NIH HHS/ -- P30 DK057521/DK/NIDDK NIH HHS/ -- P30 DK57521/DK/NIDDK NIH HHS/ -- P30CA006516-46/CA/NCI NIH HHS/ -- R01 DK069966/DK/NIDDK NIH HHS/ -- R01 DK100385/DK/NIDDK NIH HHS/ -- R01 DK69966/DK/NIDDK NIH HHS/ -- R37 DK043051/DK/NIDDK NIH HHS/ -- R37 DK43051/DK/NIDDK NIH HHS/ -- England -- Nature. 2014 Apr 10;508(7495):258-62. doi: 10.1038/nature13198.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, 330 Brookline Avenue, Boston, Massachusetts 02215, USA [2] [3] Division of Nephrology, Department of Internal Medicine I, Wurzburg University Hospital, Oberdurrbacher Strasse 6, 97080 Wurzburg, Germany (D.K.); Department of Medicine, Physiology and Biophysics, Center for Diabetes Research and Treatment, and Center for Epigenetics and Metabolism, University of California, Irvine, California 92697, USA (Q.Y.); Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, 00290, Helsinki, Finland (E.P.); Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie Medicine New Brunswick, Dalhousie University, Saint John, New Brunswick E2L4L5, USA (T.C.P.); Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China (F.G.); School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland (L.A.). ; Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, 330 Brookline Avenue, Boston, Massachusetts 02215, USA. ; Department of Cancer Biology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA. ; 1] Biotechnology and Molecular Medicine, A.I. Virtanen Institute for Molecular Sciences, Biocenter Kuopio, University of Eastern Finland, Kuopio Campus, PO Box 1627, FI-70211 Kuopio, Finland [2] Division of Nephrology, Department of Internal Medicine I, Wurzburg University Hospital, Oberdurrbacher Strasse 6, 97080 Wurzburg, Germany (D.K.); Department of Medicine, Physiology and Biophysics, Center for Diabetes Research and Treatment, and Center for Epigenetics and Metabolism, University of California, Irvine, California 92697, USA (Q.Y.); Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, 00290, Helsinki, Finland (E.P.); Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie Medicine New Brunswick, Dalhousie University, Saint John, New Brunswick E2L4L5, USA (T.C.P.); Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China (F.G.); School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland (L.A.). ; 1] Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, 330 Brookline Avenue, Boston, Massachusetts 02215, USA [2] Division of Nephrology, Department of Internal Medicine I, Wurzburg University Hospital, Oberdurrbacher Strasse 6, 97080 Wurzburg, Germany (D.K.); Department of Medicine, Physiology and Biophysics, Center for Diabetes Research and Treatment, and Center for Epigenetics and Metabolism, University of California, Irvine, California 92697, USA (Q.Y.); Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, 00290, Helsinki, Finland (E.P.); Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie Medicine New Brunswick, Dalhousie University, Saint John, New Brunswick E2L4L5, USA (T.C.P.); Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China (F.G.); School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland (L.A.). ; Department of Pharmacology, Weill Medical College of Cornell University, 1300 York Avenue, New York, New York 10065, USA. ; Division of Signal Transduction, Beth Israel Deaconess Medical Center and Harvard Medical School, 330 Brookline Ave, Boston, Massachusetts 02215, USA. ; Isis Pharmaceuticals, 1896 Rutherford Road, Carlsbad, California 92008-7326, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24717514" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyltransferases/metabolism ; Adipocytes/metabolism/secretion ; Adipose Tissue/enzymology/metabolism ; Adipose Tissue, White/enzymology/metabolism ; Animals ; Diabetes Mellitus, Type 2/enzymology/metabolism ; *Diet ; Energy Metabolism ; Fatty Liver ; Gene Knockdown Techniques ; Glucose Intolerance ; Glucose Transporter Type 4/deficiency/genetics/metabolism ; Insulin Resistance ; Liver/enzymology ; Male ; Mice ; Mice, Inbred C57BL ; NAD/metabolism ; Niacinamide/metabolism ; Nicotinamide N-Methyltransferase/*deficiency/genetics/*metabolism ; Obesity/*enzymology/etiology/genetics/*prevention & control ; Ornithine Decarboxylase/metabolism ; Oxidoreductases Acting on CH-NH Group Donors/metabolism ; S-Adenosylmethionine/metabolism ; Sirtuin 1/metabolism ; Spermine/analogs & derivatives/metabolism ; Thinness/enzymology/metabolism
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  • 57
    Publication Date: 2014-03-22
    Description: Blood vessel growth in the skeletal system and osteogenesis seem to be coupled, suggesting the existence of molecular crosstalk between endothelial and osteoblastic cells. Understanding the nature of the mechanisms linking angiogenesis and bone formation should be of great relevance for improved fracture healing or prevention of bone mass loss. Here we show that vascular growth in bone involves a specialized, tissue-specific form of angiogenesis. Notch signalling promotes endothelial cell proliferation and vessel growth in postnatal long bone, which is the opposite of the well-established function of Notch and its ligand Dll4 in the endothelium of other organs and tumours. Endothelial-cell-specific and inducible genetic disruption of Notch signalling in mice not only impaired bone vessel morphology and growth, but also led to reduced osteogenesis, shortening of long bones, chondrocyte defects, loss of trabeculae and decreased bone mass. On the basis of a series of genetic experiments, we conclude that skeletal defects in these mutants involved defective angiocrine release of Noggin from endothelial cells, which is positively regulated by Notch. Administration of recombinant Noggin, a secreted antagonist of bone morphogenetic proteins, restored bone growth and mineralization, chondrocyte maturation, the formation of trabeculae and osteoprogenitor numbers in endothelial-cell-specific Notch pathway mutants. These findings establish a molecular framework coupling angiogenesis, angiocrine signals and osteogenesis, which may prove significant for the development of future therapeutic applications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ramasamy, Saravana K -- Kusumbe, Anjali P -- Wang, Lin -- Adams, Ralf H -- England -- Nature. 2014 Mar 20;507(7492):376-80. doi: 10.1038/nature13146. Epub 2014 Mar 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, D-48149 Munster, Germany [2]. ; Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, D-48149 Munster, Germany. ; 1] Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, D-48149 Munster, Germany [2] University of Munster, Faculty of Medicine, D-48149 Munster, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24647000" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Blood Vessels/growth & development ; Bone Development/drug effects ; Bone and Bones/*blood supply/cytology/drug effects/*metabolism ; Calcification, Physiologic/drug effects ; Carrier Proteins/administration & dosage/metabolism/pharmacology ; Cell Proliferation ; Chondrocytes/cytology/drug effects ; Endothelium, Vascular/cytology/*metabolism ; Female ; Male ; Mice ; Mice, Inbred C57BL ; *Neovascularization, Physiologic ; *Osteogenesis/drug effects ; Receptors, Notch/*metabolism ; Signal Transduction/genetics
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  • 58
    Publication Date: 2014-07-22
    Description: Fibroblast growth factor 1 (FGF1) is an autocrine/paracrine regulator whose binding to heparan sulphate proteoglycans effectively precludes its circulation. Although FGF1 is known as a mitogenic factor, FGF1 knockout mice develop insulin resistance when stressed by a high-fat diet, suggesting a potential role in nutrient homeostasis. Here we show that parenteral delivery of a single dose of recombinant FGF1 (rFGF1) results in potent, insulin-dependent lowering of glucose levels in diabetic mice that is dose-dependent but does not lead to hypoglycaemia. Chronic pharmacological treatment with rFGF1 increases insulin-dependent glucose uptake in skeletal muscle and suppresses the hepatic production of glucose to achieve whole-body insulin sensitization. The sustained glucose lowering and insulin sensitization attributed to rFGF1 are not accompanied by the side effects of weight gain, liver steatosis and bone loss associated with current insulin-sensitizing therapies. We also show that the glucose-lowering activity of FGF1 can be dissociated from its mitogenic activity and is mediated predominantly via FGF receptor 1 signalling. Thus we have uncovered an unexpected, neomorphic insulin-sensitizing action for exogenous non-mitogenic human FGF1 with therapeutic potential for the treatment of insulin resistance and type 2 diabetes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4184286/" 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/PMC4184286/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suh, Jae Myoung -- Jonker, Johan W -- Ahmadian, Maryam -- Goetz, Regina -- Lackey, Denise -- Osborn, Olivia -- Huang, Zhifeng -- Liu, Weilin -- Yoshihara, Eiji -- van Dijk, Theo H -- Havinga, Rick -- Fan, Weiwei -- Yin, Yun-Qiang -- Yu, Ruth T -- Liddle, Christopher -- Atkins, Annette R -- Olefsky, Jerrold M -- Mohammadi, Moosa -- Downes, Michael -- Evans, Ronald M -- DE13686/DE/NIDCR NIH HHS/ -- DK-033651/DK/NIDDK NIH HHS/ -- DK-063491/DK/NIDDK NIH HHS/ -- DK-074868/DK/NIDDK NIH HHS/ -- DK057978/DK/NIDDK NIH HHS/ -- DK090962/DK/NIDDK NIH HHS/ -- ES010337/ES/NIEHS NIH HHS/ -- HL088093/HL/NHLBI NIH HHS/ -- HL105278/HL/NHLBI NIH HHS/ -- P01 DK054441/DK/NIDDK NIH HHS/ -- P01 DK074868/DK/NIDDK NIH HHS/ -- P01 HL088093/HL/NHLBI NIH HHS/ -- P01-DK054441-14A1/DK/NIDDK NIH HHS/ -- P30 DK063491/DK/NIDDK NIH HHS/ -- P42 ES010337/ES/NIEHS NIH HHS/ -- R01 HL105278/HL/NHLBI NIH HHS/ -- R24 DK090962/DK/NIDDK NIH HHS/ -- R37 DK033651/DK/NIDDK NIH HHS/ -- R37 DK057978/DK/NIDDK NIH HHS/ -- T32 DK007494/DK/NIDDK NIH HHS/ -- T32-DK-007494/DK/NIDDK NIH HHS/ -- U54 HD012303/HD/NICHD NIH HHS/ -- U54-HD-012303-25/HD/NICHD NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Sep 18;513(7518):436-9. doi: 10.1038/nature13540. Epub 2014 Jul 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037, USA [2]. ; 1] Center for Liver, Digestive and Metabolic Diseases, Departments of Pediatrics and Laboratory Medicine, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands [2]. ; Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037, USA. ; Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016, USA. ; Department of Medicine, Division of Endocrinology and Metabolism, University of California at San Diego, La Jolla, California 92093, USA. ; 1] Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016, USA [2] School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China. ; Center for Liver, Digestive and Metabolic Diseases, Departments of Pediatrics and Laboratory Medicine, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands. ; The Storr Liver Unit, Westmead Millennium Institute and University of Sydney, Westmead Hospital, Westmead, New South Wales 2145, Australia. ; 1] Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037, USA [2] Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, California 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25043058" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Glucose/metabolism ; Body Weight/drug effects ; Diabetes Mellitus, Experimental/drug therapy/metabolism ; Diabetes Mellitus, Type 2/metabolism ; Diet, High-Fat ; Dose-Response Relationship, Drug ; Fibroblast Growth Factor 1/administration & dosage/adverse effects/*pharmacology ; Glucose/*metabolism ; Glucose Tolerance Test ; Humans ; Insulin/*metabolism ; Insulin Resistance ; Liver/drug effects/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Obese ; Mitogens/pharmacology ; Muscle, Skeletal/drug effects/metabolism ; Receptor, Fibroblast Growth Factor, Type 1/metabolism
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 59
    Publication Date: 2014-05-30
    Description: The availability of human genome sequence has transformed biomedical research over the past decade. However, an equivalent map for the human proteome with direct measurements of proteins and peptides does not exist yet. Here we present a draft map of the human proteome using high-resolution Fourier-transform mass spectrometry. In-depth proteomic profiling of 30 histologically normal human samples, including 17 adult tissues, 7 fetal tissues and 6 purified primary haematopoietic cells, resulted in identification of proteins encoded by 17,294 genes accounting for approximately 84% of the total annotated protein-coding genes in humans. A unique and comprehensive strategy for proteogenomic analysis enabled us to discover a number of novel protein-coding regions, which includes translated pseudogenes, non-coding RNAs and upstream open reading frames. This large human proteome catalogue (available as an interactive web-based resource at http://www.humanproteomemap.org) will complement available human genome and transcriptome data to accelerate biomedical research in health and disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4403737/" 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/PMC4403737/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Min-Sik -- Pinto, Sneha M -- Getnet, Derese -- Nirujogi, Raja Sekhar -- Manda, Srikanth S -- Chaerkady, Raghothama -- Madugundu, Anil K -- Kelkar, Dhanashree S -- Isserlin, Ruth -- Jain, Shobhit -- Thomas, Joji K -- Muthusamy, Babylakshmi -- Leal-Rojas, Pamela -- Kumar, Praveen -- Sahasrabuddhe, Nandini A -- Balakrishnan, Lavanya -- Advani, Jayshree -- George, Bijesh -- Renuse, Santosh -- Selvan, Lakshmi Dhevi N -- Patil, Arun H -- Nanjappa, Vishalakshi -- Radhakrishnan, Aneesha -- Prasad, Samarjeet -- Subbannayya, Tejaswini -- Raju, Rajesh -- Kumar, Manish -- Sreenivasamurthy, Sreelakshmi K -- Marimuthu, Arivusudar -- Sathe, Gajanan J -- Chavan, Sandip -- Datta, Keshava K -- Subbannayya, Yashwanth -- Sahu, Apeksha -- Yelamanchi, Soujanya D -- Jayaram, Savita -- Rajagopalan, Pavithra -- Sharma, Jyoti -- Murthy, Krishna R -- Syed, Nazia -- Goel, Renu -- Khan, Aafaque A -- Ahmad, Sartaj -- Dey, Gourav -- Mudgal, Keshav -- Chatterjee, Aditi -- Huang, Tai-Chung -- Zhong, Jun -- Wu, Xinyan -- Shaw, Patrick G -- Freed, Donald -- Zahari, Muhammad S -- Mukherjee, Kanchan K -- Shankar, Subramanian -- Mahadevan, Anita -- Lam, Henry -- Mitchell, Christopher J -- Shankar, Susarla Krishna -- Satishchandra, Parthasarathy -- Schroeder, John T -- Sirdeshmukh, Ravi -- Maitra, Anirban -- Leach, Steven D -- Drake, Charles G -- Halushka, Marc K -- Prasad, T S Keshava -- Hruban, Ralph H -- Kerr, Candace L -- Bader, Gary D -- Iacobuzio-Donahue, Christine A -- Gowda, Harsha -- Pandey, Akhilesh -- HHSN268201000032C/HL/NHLBI NIH HHS/ -- HHSN268201000032C/PHS HHS/ -- P41 GM103504/GM/NIGMS NIH HHS/ -- P41GM103504/GM/NIGMS NIH HHS/ -- T32 GM007814/GM/NIGMS NIH HHS/ -- U24 CA160036/CA/NCI NIH HHS/ -- U24CA160036/CA/NCI NIH HHS/ -- U54 GM103520/GM/NIGMS NIH HHS/ -- U54GM103520/GM/NIGMS NIH HHS/ -- England -- Nature. 2014 May 29;509(7502):575-81. doi: 10.1038/nature13302.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA [2] Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA. ; Institute of Bioinformatics, International Tech Park, Bangalore 560066, India. ; 1] McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA [2] Adrienne Helis Malvin Medical Research Foundation, New Orleans, Louisiana 70130, USA. ; The Donnelly Centre, University of Toronto, Toronto, Ontario M5S 3E1, Canada. ; 1] McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA [2] Department of Pathology, Universidad de La Frontera, Center of Genetic and Immunological Studies-Scientific and Technological Bioresource Nucleus, Temuco 4811230, Chile. ; McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA. ; School of Medicine, Imperial College London, South Kensington Campus, London SW7 2AZ, UK. ; Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA. ; Department of Neurosurgery, Postgraduate Institute of Medical Education & Research, Chandigarh 160012, India. ; Department of Internal Medicine Armed Forces Medical College, Pune 411040, India. ; 1] Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore 560029, India [2] Human Brain Tissue Repository, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India. ; Department of Chemical and Biomolecular Engineering and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong. ; Department of Neurology, National Institute of Mental Health and Neurosciences, Bangalore 560029, India. ; Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21224, USA. ; 1] The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA [2] Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA. ; 1] McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA [2] Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA. ; 1] Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA [2] Departments of Immunology and Urology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA. ; The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA. ; 1] Department of Obstetrics and Gynecology, Johns Hopkins University School of Medicine Baltimore, Maryland 21205, USA [2] Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA. ; 1] The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA [2] Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA [3] Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA. ; 1] McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA [2] Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA [3] Institute of Bioinformatics, International Tech Park, Bangalore 560066, India [4] Adrienne Helis Malvin Medical Research Foundation, New Orleans, Louisiana 70130, USA [5] The Sol Goldman Pancreatic Cancer Research Center, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA [6] Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA [7] Diana Helis Henry Medical Research Foundation, New Orleans, Louisiana 70130, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24870542" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Cells, Cultured ; Databases, Protein ; Fetus/metabolism ; Fourier Analysis ; Gene Expression Profiling ; Genome, Human/genetics ; Hematopoietic Stem Cells/cytology/metabolism ; Humans ; Internet ; Mass Spectrometry ; Molecular Sequence Annotation ; Open Reading Frames/genetics ; Organ Specificity ; Protein Biosynthesis ; Protein Isoforms/analysis/genetics/metabolism ; Protein Sorting Signals ; Protein Transport ; Proteome/analysis/chemistry/genetics/*metabolism ; *Proteomics ; Pseudogenes/genetics ; RNA, Untranslated/genetics ; Reproducibility of Results ; Untranslated Regions/genetics
    Print ISSN: 0028-0836
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  • 60
    Publication Date: 2014-11-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yarborough, Mark -- England -- Nature. 2014 Nov 20;515(7527):313. doi: 10.1038/515313a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25409791" target="_blank"〉PubMed〈/a〉
    Keywords: Access to Information ; Bias (Epidemiology) ; *Communication ; Conflict of Interest ; *Public Opinion ; Quality Control ; Reproducibility of Results ; Research Design ; *Research Personnel/ethics/standards ; Science/*standards ; *Trust
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  • 61
    Publication Date: 2014-08-01
    Description: Haematopoietic stem cells (HSCs) self-renew for life, thereby making them one of the few blood cells that truly age. Paradoxically, although HSCs numerically expand with age, their functional activity declines over time, resulting in degraded blood production and impaired engraftment following transplantation. While many drivers of HSC ageing have been proposed, the reason why HSC function degrades with age remains unknown. Here we show that cycling old HSCs in mice have heightened levels of replication stress associated with cell cycle defects and chromosome gaps or breaks, which are due to decreased expression of mini-chromosome maintenance (MCM) helicase components and altered dynamics of DNA replication forks. Nonetheless, old HSCs survive replication unless confronted with a strong replication challenge, such as transplantation. Moreover, once old HSCs re-establish quiescence, residual replication stress on ribosomal DNA (rDNA) genes leads to the formation of nucleolar-associated gammaH2AX signals, which persist owing to ineffective H2AX dephosphorylation by mislocalized PP4c phosphatase rather than ongoing DNA damage. Persistent nucleolar gammaH2AX also acts as a histone modification marking the transcriptional silencing of rDNA genes and decreased ribosome biogenesis in quiescent old HSCs. Our results identify replication stress as a potent driver of functional decline in old HSCs, and highlight the MCM DNA helicase as a potential molecular target for rejuvenation therapies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4456040/" 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/PMC4456040/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Flach, Johanna -- Bakker, Sietske T -- Mohrin, Mary -- Conroy, Pauline C -- Pietras, Eric M -- Reynaud, Damien -- Alvarez, Silvia -- Diolaiti, Morgan E -- Ugarte, Fernando -- Forsberg, E Camilla -- Le Beau, Michelle M -- Stohr, Bradley A -- Mendez, Juan -- Morrison, Ciaran G -- Passegue, Emmanuelle -- F32 HL106989/HL/NHLBI NIH HHS/ -- R01 CA184014/CA/NCI NIH HHS/ -- R01 HL092471/HL/NHLBI NIH HHS/ -- R01 HL115158/HL/NHLBI NIH HHS/ -- T32 AI007334/AI/NIAID NIH HHS/ -- England -- Nature. 2014 Aug 14;512(7513):198-202. doi: 10.1038/nature13619. Epub 2014 Jul 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Hem/Onc Division, University of California San Francisco, San Francisco, California 94143, USA [2] Institute of Experimental Cancer Research, Comprehensive Cancer Center, 89081 Ulm, Germany. ; The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Hem/Onc Division, University of California San Francisco, San Francisco, California 94143, USA. ; Center for Chromosome Biology, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland. ; Spanish National Cancer Research Centre (CNIO), E-28049 Madrid, Spain. ; Department of Pathology, University of California San Francisco, San Francisco, California 94143, USA. ; Institute for the Biology of Stem Cells, Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, California 95064, USA. ; Section of Hematology/Oncology and the Comprehensive Cancer Center, University of Chicago, Chicago, Illinois 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25079315" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Aging/genetics/*physiology ; Cell Proliferation ; DNA Damage/genetics ; DNA Replication/*physiology ; DNA, Ribosomal/genetics ; Female ; Gene Expression Regulation ; Hematopoietic Stem Cells/cytology/*pathology ; Histones/genetics/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Minichromosome Maintenance Proteins/genetics ; *Stress, Physiological
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  • 62
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    Nature Publishing Group (NPG)
    Publication Date: 2014-04-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Callaway, Ewen -- England -- Nature. 2014 Apr 3;508(7494):22. doi: 10.1038/508022a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24695296" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aging/blood/genetics ; Basic Helix-Loop-Helix Transcription Factors/genetics ; Body Mass Index ; Case-Control Studies ; DNA Methylation ; *Epigenomics/standards/trends ; Gene-Environment Interaction ; Genome-Wide Association Study/standards ; Humans ; Infant, Newborn ; Obesity/genetics ; Repressor Proteins/genetics ; Reproducibility of Results
    Print ISSN: 0028-0836
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  • 63
    Publication Date: 2014-10-03
    Description: Germinal centre B-cell-like diffuse large B-cell lymphoma (GCB-DLBCL) is a common malignancy, yet the signalling pathways that are deregulated and the factors leading to its systemic dissemination are poorly defined. Work in mice showed that sphingosine-1-phosphate receptor-2 (S1PR2), a Galpha12 and Galpha13 coupled receptor, promotes growth regulation and local confinement of germinal centre B cells. Recent deep sequencing studies of GCB-DLBCL have revealed mutations in many genes in this cancer, including in GNA13 (encoding Galpha13) and S1PR2 (refs 5,6, 7). Here we show, using in vitro and in vivo assays, that GCB-DLBCL-associated mutations occurring in S1PR2 frequently disrupt the receptor's Akt and migration inhibitory functions. Galpha13-deficient mouse germinal centre B cells and human GCB-DLBCL cells were unable to suppress pAkt and migration in response to S1P, and Galpha13-deficient mice developed germinal centre B-cell-derived lymphoma. Germinal centre B cells, unlike most lymphocytes, are tightly confined in lymphoid organs and do not recirculate. Remarkably, deficiency in Galpha13, but not S1PR2, led to germinal centre B-cell dissemination into lymph and blood. GCB-DLBCL cell lines frequently carried mutations in the Galpha13 effector ARHGEF1, and Arhgef1 deficiency also led to germinal centre B-cell dissemination. The incomplete phenocopy of Galpha13- and S1PR2 deficiency led us to discover that P2RY8, an orphan receptor that is mutated in GCB-DLBCL and another germinal centre B-cell-derived malignancy, Burkitt's lymphoma, also represses germinal centre B-cell growth and promotes confinement via Galpha13. These findings identify a Galpha13-dependent pathway that exerts dual actions in suppressing growth and blocking dissemination of germinal centre B cells that is frequently disrupted in germinal centre B-cell-derived lymphoma.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4267955/" 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/PMC4267955/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Muppidi, Jagan R -- Schmitz, Roland -- Green, Jesse A -- Xiao, Wenming -- Larsen, Adrien B -- Braun, Sterling E -- An, Jinping -- Xu, Ying -- Rosenwald, Andreas -- Ott, German -- Gascoyne, Randy D -- Rimsza, Lisa M -- Campo, Elias -- Jaffe, Elaine S -- Delabie, Jan -- Smeland, Erlend B -- Braziel, Rita M -- Tubbs, Raymond R -- Cook, J R -- Weisenburger, Dennis D -- Chan, Wing C -- Vaidehi, Nagarajan -- Staudt, Louis M -- Cyster, Jason G -- AI45073/AI/NIAID NIH HHS/ -- GM097261/GM/NIGMS NIH HHS/ -- R01 AI045073/AI/NIAID NIH HHS/ -- R01 GM097261/GM/NIGMS NIH HHS/ -- T32 CA128583/CA/NCI NIH HHS/ -- T32 CA1285835/CA/NCI NIH HHS/ -- T32 DK007636/DK/NIDDK NIH HHS/ -- UL1 TR000439/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- Intramural NIH HHS/ -- England -- Nature. 2014 Dec 11;516(7530):254-8. doi: 10.1038/nature13765. Epub 2014 Sep 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA [2] Department of Medicine, University of California, San Francisco, California 94143, USA [3] Howard Hughes Medical Institute, University of California, San Francisco, California 94143, USA. ; Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; 1] Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA [2] Howard Hughes Medical Institute, University of California, San Francisco, California 94143, USA [3] Immunology Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA. ; Division of Immunology, Beckman Research Institute of the City of Hope, Duarte, California 91010, USA. ; 1] Department of Microbiology and Immunology, University of California, San Francisco, California, 94143, USA [2] Howard Hughes Medical Institute, University of California, San Francisco, California 94143, USA. ; Department of Pathology, University of Wurzburg, 97080 Wurzburg, Germany. ; 1] Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Auerbachstrasse 110, 70376 Stuttgart, Germany [2] Dr. Margarete Fischer-Bosch Institute for Clinical Pharmacology, 70376 Stuttgart, Germany. ; British Columbia Cancer Agency, Vancouver, British Columbia V5Z 1L3, Canada. ; Department of Pathology, University of Arizona, Tucson, Arizona 85724, USA. ; Hospital Clinic, University of Barcelona, 08036 Barcelona, Spain. ; Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Pathology Clinic, Rikshospitalet University Hospital, 0372 Oslo, Norway. ; 1] Institute for Cancer Research, Rikshospitalet University Hospital, University of Oslo, 0310 Oslo, Norway [2] Center for Cancer Biomedicine, Faculty Division of the Norwegian Radium Hospital, University of Oslo, 0310 Oslo, Norway. ; Oregon Health and Science University, Portland, Oregon 97239, USA. ; Cleveland Clinic Pathology and Laboratory Medicine Institute, Cleveland, Ohio 44195, USA. ; Department of Pathology, City of Hope National Medical Center, Duarte, California 91010, USA. ; 1] Department of Pathology, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA [2] Department of Microbiology, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25274307" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/*metabolism/*pathology ; Blood/immunology ; Burkitt Lymphoma/metabolism/pathology ; Cell Line, Tumor ; Cell Movement/genetics ; GTP-Binding Protein alpha Subunits, G12-G13/*metabolism ; Germinal Center/*pathology ; Humans ; Lymph/cytology ; Lymphoma, Large B-Cell, Diffuse/genetics/*metabolism/*pathology ; Mice ; Mice, Inbred C57BL ; Mutation/genetics ; Oncogene Protein v-akt/genetics/metabolism ; Receptors, Lysosphingolipid/deficiency/genetics/metabolism ; Receptors, Purinergic P2Y/genetics/metabolism ; Rho Guanine Nucleotide Exchange Factors/deficiency/genetics ; *Signal Transduction
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  • 64
    Publication Date: 2014-03-29
    Description: Bariatric surgical procedures, such as vertical sleeve gastrectomy (VSG), are at present the most effective therapy for the treatment of obesity, and are associated with considerable improvements in co-morbidities, including type-2 diabetes mellitus. The underlying molecular mechanisms contributing to these benefits remain largely undetermined, despite offering the potential to reveal new targets for therapeutic intervention. Substantial changes in circulating total bile acids are known to occur after VSG. Moreover, bile acids are known to regulate metabolism by binding to the nuclear receptor FXR (farsenoid-X receptor, also known as NR1H4). We therefore examined the results of VSG surgery applied to mice with diet-induced obesity and targeted genetic disruption of FXR. Here we demonstrate that the therapeutic value of VSG does not result from mechanical restriction imposed by a smaller stomach. Rather, VSG is associated with increased circulating bile acids, and associated changes to gut microbial communities. Moreover, in the absence of FXR, the ability of VSG to reduce body weight and improve glucose tolerance is substantially reduced. These results point to bile acids and FXR signalling as an important molecular underpinning for the beneficial effects of this weight-loss surgery.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4016120/" 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/PMC4016120/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ryan, Karen K -- Tremaroli, Valentina -- Clemmensen, Christoffer -- Kovatcheva-Datchary, Petia -- Myronovych, Andriy -- Karns, Rebekah -- Wilson-Perez, Hilary E -- Sandoval, Darleen A -- Kohli, Rohit -- Backhed, Fredrik -- Seeley, Randy J -- DK078392/DK/NIDDK NIH HHS/ -- DK082173/DK/NIDDK NIH HHS/ -- DK093848/DK/NIDDK NIH HHS/ -- HL111319/HL/NHLBI NIH HHS/ -- K08 DK084310/DK/NIDDK NIH HHS/ -- K99 HL111319/HL/NHLBI NIH HHS/ -- P30 DK078392/DK/NIDDK NIH HHS/ -- England -- Nature. 2014 May 8;509(7499):183-8. doi: 10.1038/nature13135. Epub 2014 Mar 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Cincinnati, Cincinnati, Ohio 45237, USA. ; Wallenberg Laboratory, Department of Molecular and Clinical Medicine and Sahlgrenska Center for Cardiovascular and Metabolic Research, University of Gothenburg, S-413 45 Gothenburg, Sweden. ; 1] Department of Internal Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Cincinnati, Cincinnati, Ohio 45237, USA [2] Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark. ; Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA. ; Divison of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA. ; 1] Wallenberg Laboratory, Department of Molecular and Clinical Medicine and Sahlgrenska Center for Cardiovascular and Metabolic Research, University of Gothenburg, S-413 45 Gothenburg, Sweden [2] Novo Nordisk Foundation Center for Basic Metabolic Research, Section for Metabolic Receptology and Enteroendocrinology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, DK-2200, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24670636" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bariatric Surgery ; Bile Acids and Salts/blood ; Body Composition ; Cecum/microbiology ; Feeding Behavior ; *Gastrectomy ; Glucose Intolerance/surgery ; Glucose Tolerance Test ; Male ; Mice ; Mice, Inbred C57BL ; Obesity/etiology/surgery ; Receptors, Cytoplasmic and Nuclear/deficiency/genetics/*metabolism ; Signal Transduction ; Stomach/metabolism/surgery ; Weight Loss
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  • 65
    Publication Date: 2014-02-04
    Description: The precision of skilled forelimb movement has long been presumed to rely on rapid feedback corrections triggered by internally directed copies of outgoing motor commands, but the functional relevance of inferred internal copy circuits has remained unclear. One class of spinal interneurons implicated in the control of mammalian forelimb movement, cervical propriospinal neurons (PNs), has the potential to convey an internal copy of premotor signals through dual innervation of forelimb-innervating motor neurons and precerebellar neurons of the lateral reticular nucleus. Here we examine whether the PN internal copy pathway functions in the control of goal-directed reaching. In mice, PNs include a genetically accessible subpopulation of cervical V2a interneurons, and their targeted ablation perturbs reaching while leaving intact other elements of forelimb movement. Moreover, optogenetic activation of the PN internal copy branch recruits a rapid cerebellar feedback loop that modulates forelimb motor neuron activity and severely disrupts reaching kinematics. Our findings implicate V2a PNs as the focus of an internal copy pathway assigned to the rapid updating of motor output during reaching behaviour.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4230338/" 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/PMC4230338/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Azim, Eiman -- Jiang, Juan -- Alstermark, Bror -- Jessell, Thomas M -- NS033245/NS/NINDS NIH HHS/ -- R01 NS033245/NS/NINDS NIH HHS/ -- R01 NS080932/NS/NINDS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Apr 17;508(7496):357-63. doi: 10.1038/nature13021. Epub 2014 Feb 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Kavli Institute for Brain Science, Mortimer B. Zuckerman Mind Brain Behavior Institute, Departments of Neuroscience and Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032, USA. ; Department of Integrative Medical Biology, Section of Physiology, Umea University, Umea, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24487617" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cerebellum/physiology ; Feedback, Physiological ; Female ; Forelimb/*innervation/*physiology ; Interneurons/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Models, Neurological ; Motor Neurons/*physiology ; Motor Skills/*physiology ; Movement/*physiology ; *Neural Pathways ; Optogenetics ; Psychomotor Performance/physiology ; Spinal Cord/*cytology
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  • 66
    Publication Date: 2014-04-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hsu, Angel -- Malik, Omar -- Johnson, Laura -- Esty, Daniel C -- England -- Nature. 2014 Apr 3;508(7494):33-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24707525" target="_blank"〉PubMed〈/a〉
    Keywords: Bias (Epidemiology) ; Conservation of Natural Resources/*methods/*statistics & numerical data ; Crowdsourcing ; Ecology/*manpower/*methods ; Environmental Monitoring/standards ; Environmental Policy/legislation & jurisprudence ; Federal Government ; *Goals ; Politics ; *Program Evaluation/standards ; Reproducibility of Results ; United Nations/legislation & jurisprudence
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  • 67
    Publication Date: 2014-06-17
    Description: Understanding how chance historical events shape evolutionary processes is a central goal of evolutionary biology. Direct insights into the extent and causes of evolutionary contingency have been limited to experimental systems, because it is difficult to know what happened in the deep past and to characterize other paths that evolution could have followed. Here we combine ancestral protein reconstruction, directed evolution and biophysical analysis to explore alternative 'might-have-been' trajectories during the ancient evolution of a novel protein function. We previously found that the evolution of cortisol specificity in the ancestral glucocorticoid receptor (GR) was contingent on permissive substitutions, which had no apparent effect on receptor function but were necessary for GR to tolerate the large-effect mutations that caused the shift in specificity. Here we show that alternative mutations that could have permitted the historical function-switching substitutions are extremely rare in the ensemble of genotypes accessible to the ancestral GR. In a library of thousands of variants of the ancestral protein, we recovered historical permissive substitutions but no alternative permissive genotypes. Using biophysical analysis, we found that permissive mutations must satisfy at least three physical requirements--they must stabilize specific local elements of the protein structure, maintain the correct energetic balance between functional conformations, and be compatible with the ancestral and derived structures--thus revealing why permissive mutations are rare. These findings demonstrate that GR evolution depended strongly on improbable, non-deterministic events, and this contingency arose from intrinsic biophysical properties of the protein.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4447330/" 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/PMC4447330/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harms, Michael J -- Thornton, Joseph W -- F32-GM090650/GM/NIGMS NIH HHS/ -- R01 GM081592/GM/NIGMS NIH HHS/ -- R01 GM104397/GM/NIGMS NIH HHS/ -- R01-GM081592/GM/NIGMS NIH HHS/ -- R01-GM104397/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Aug 14;512(7513):203-7. doi: 10.1038/nature13410. Epub 2014 Jun 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Institute of Molecular Biology and Department of Chemistry &Biochemistry, University of Oregon, Eugene, Oregon 97403, USA [2] Departments of Human Genetics and Ecology &Evolution, University of Chicago, Chicago, Illinois 60637, USA. ; 1] Departments of Human Genetics and Ecology &Evolution, University of Chicago, Chicago, Illinois 60637, USA [2] Institute of Ecology and Evolution, University of Oregon, Eugene, Oregon 97403, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24930765" target="_blank"〉PubMed〈/a〉
    Keywords: Biophysics ; *Evolution, Molecular ; Genotype ; Mutation/genetics ; Protein Conformation ; Protein Stability ; Receptors, Glucocorticoid/*chemistry/*genetics ; Saccharomyces cerevisiae ; Substrate Specificity ; Two-Hybrid System Techniques
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  • 68
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    Publication Date: 2014-05-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abbott, Alison -- England -- Nature. 2014 May 1;509(7498):15-6. doi: 10.1038/509015a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24784193" target="_blank"〉PubMed〈/a〉
    Keywords: Adult Stem Cells/transplantation ; Clinical Trials, Phase III as Topic/economics/trends ; Heart Diseases/*therapy ; Heart Failure/therapy ; Humans ; Mesenchymal Stem Cell Transplantation ; Myocardial Infarction/therapy ; Randomized Controlled Trials as Topic/standards/*statistics & numerical data ; Reproducibility of Results ; *Stem Cell Transplantation
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  • 69
    Publication Date: 2014-08-01
    Description: The translational control of oncoprotein expression is implicated in many cancers. Here we report an eIF4A RNA helicase-dependent mechanism of translational control that contributes to oncogenesis and underlies the anticancer effects of silvestrol and related compounds. For example, eIF4A promotes T-cell acute lymphoblastic leukaemia development in vivo and is required for leukaemia maintenance. Accordingly, inhibition of eIF4A with silvestrol has powerful therapeutic effects against murine and human leukaemic cells in vitro and in vivo. We use transcriptome-scale ribosome footprinting to identify the hallmarks of eIF4A-dependent transcripts. These include 5' untranslated region (UTR) sequences such as the 12-nucleotide guanine quartet (CGG)4 motif that can form RNA G-quadruplex structures. Notably, among the most eIF4A-dependent and silvestrol-sensitive transcripts are a number of oncogenes, superenhancer-associated transcription factors, and epigenetic regulators. Hence, the 5' UTRs of select cancer genes harbour a targetable requirement for the eIF4A RNA helicase.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4492470/" 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/PMC4492470/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolfe, Andrew L -- Singh, Kamini -- Zhong, Yi -- Drewe, Philipp -- Rajasekhar, Vinagolu K -- Sanghvi, Viraj R -- Mavrakis, Konstantinos J -- Jiang, Man -- Roderick, Justine E -- Van der Meulen, Joni -- Schatz, Jonathan H -- Rodrigo, Christina M -- Zhao, Chunying -- Rondou, Pieter -- de Stanchina, Elisa -- Teruya-Feldstein, Julie -- Kelliher, Michelle A -- Speleman, Frank -- Porco, John A Jr -- Pelletier, Jerry -- Ratsch, Gunnar -- Wendel, Hans-Guido -- GM-067041/GM/NIGMS NIH HHS/ -- GM-073855/GM/NIGMS NIH HHS/ -- MOP-10653/Canadian Institutes of Health Research/Canada -- P30 CA008748/CA/NCI NIH HHS/ -- R01 CA142798/CA/NCI NIH HHS/ -- R01-CA142798-01/CA/NCI NIH HHS/ -- England -- Nature. 2014 Sep 4;513(7516):65-70. doi: 10.1038/nature13485. Epub 2014 Jul 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Cancer Biology and Genetics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA [2] Weill Cornell Graduate School of Medical Sciences, New York, New York 10065, USA [3]. ; 1] Cancer Biology and Genetics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA [2]. ; Computational Biology Department, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA. ; Stem Cell Center and Developmental Biology Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA. ; Cancer Biology and Genetics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA. ; 1] Cancer Biology and Genetics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA [2] Novartis, Cambridge, Massachusetts 02139, USA (K.J.M.); The University of Arizona Cancer Center, Tucson, Arizona 85719, USA (J.H.S.). ; Department of Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts 01605 USA. ; 1] Cancer Biology and Genetics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA [2] Center for Medical Genetics, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium. ; 1] Cancer Biology and Genetics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA [2] Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA [3] Novartis, Cambridge, Massachusetts 02139, USA (K.J.M.); The University of Arizona Cancer Center, Tucson, Arizona 85719, USA (J.H.S.). ; Department of Chemistry, Center for Chemical Methodology and Library Development, Boston University, Boston, Massachusetts 02215, USA. ; Center for Medical Genetics, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium. ; Molecular Pharmacology Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA. ; Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA. ; 1] Department of Biochemistry, McGill University, Montreal, Quebec H3G 1Y6, Canada [2] Department of Oncology, McGill University, Montreal, Quebec H3G 1Y6, Canada [3] The Rosalind and Morris Goodman Cancer Research Center, McGill University, Montreal, Quebec H3G 1Y6, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25079319" target="_blank"〉PubMed〈/a〉
    Keywords: 5' Untranslated Regions/*genetics ; Animals ; Antineoplastic Agents, Phytogenic/pharmacology/therapeutic use ; Base Sequence ; Cell Line, Tumor ; Epigenesis, Genetic ; Eukaryotic Initiation Factor-4A/*metabolism ; Female ; *G-Quadruplexes ; Humans ; Mice ; Mice, Inbred C57BL ; Nucleotide Motifs ; Oncogene Proteins/*biosynthesis/*genetics ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/drug ; therapy/genetics/*metabolism ; *Protein Biosynthesis/drug effects ; Ribosomes/metabolism ; Transcription Factors/metabolism ; Transcription, Genetic/drug effects/genetics ; Triterpenes/pharmacology
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  • 70
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    Nature Publishing Group (NPG)
    Publication Date: 2014-03-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marris, Emma -- England -- Nature. 2014 Mar 13;507(7491):158-60. doi: 10.1038/507158a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24622187" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Food Chain ; *Models, Biological ; Predatory Behavior/*physiology ; Reproducibility of Results ; Wolves/*physiology
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  • 71
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    Nature Publishing Group (NPG)
    Publication Date: 2014-10-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, Barry -- Azad, Meghan -- England -- Nature. 2014 Oct 16;514(7522):S6-7. doi: 10.1038/514S6a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25317594" target="_blank"〉PubMed〈/a〉
    Keywords: Helicobacter pylori/genetics/isolation & purification/*pathogenicity ; History, 20th Century ; History, 21st Century ; Human Migration ; Humans ; Hygiene Hypothesis ; Job Satisfaction ; Male ; Nobel Prize ; Reproducibility of Results ; Stomach Ulcer/*etiology/history/*microbiology ; Stress, Psychological ; Vaccines, Edible
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  • 72
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    Nature Publishing Group (NPG)
    Publication Date: 2014-08-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉England -- Nature. 2014 Aug 28;512(7515):347. doi: 10.1038/512347b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25164715" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Psychological ; *Attitude ; *Behavior ; Global Warming/prevention & control/*statistics & numerical data ; Human Activities ; Humans ; *Models, Psychological ; Reproducibility of Results
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  • 73
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    Nature Publishing Group (NPG)
    Publication Date: 2014-03-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cyranoski, David -- England -- Nature. 2014 Mar 20;507(7492):283. doi: 10.1038/507283a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24646974" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cellular Reprogramming ; Dissertations, Academic as Topic/standards ; Embryonic Stem Cells/cytology ; Induced Pluripotent Stem Cells/*cytology ; Japan ; Mice ; Reproducibility of Results ; Research Personnel/*ethics ; Retraction of Publication as Topic ; Scientific Misconduct/*legislation & jurisprudence ; Stem Cell Transplantation
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  • 74
    Publication Date: 2014-04-18
    Description: The mammalian lung is a highly branched network in which the distal regions of the bronchial tree transform during development into a densely packed honeycomb of alveolar air sacs that mediate gas exchange. Although this transformation has been studied by marker expression analysis and fate-mapping, the mechanisms that control the progression of lung progenitors along distinct lineages into mature alveolar cell types are still incompletely known, in part because of the limited number of lineage markers and the effects of ensemble averaging in conventional transcriptome analysis experiments on cell populations. Here we show that single-cell transcriptome analysis circumvents these problems and enables direct measurement of the various cell types and hierarchies in the developing lung. We used microfluidic single-cell RNA sequencing (RNA-seq) on 198 individual cells at four different stages encompassing alveolar differentiation to measure the transcriptional states which define the developmental and cellular hierarchy of the distal mouse lung epithelium. We empirically classified cells into distinct groups by using an unbiased genome-wide approach that did not require a priori knowledge of the underlying cell types or the previous purification of cell populations. The results confirmed the basic outlines of the classical model of epithelial cell-type diversity in the distal lung and led to the discovery of many previously unknown cell-type markers, including transcriptional regulators that discriminate between the different populations. We reconstructed the molecular steps during maturation of bipotential progenitors along both alveolar lineages and elucidated the full life cycle of the alveolar type 2 cell lineage. This single-cell genomics approach is applicable to any developing or mature tissue to robustly delineate molecularly distinct cell types, define progenitors and lineage hierarchies, and identify lineage-specific regulatory factors.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4145853/" 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/PMC4145853/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Treutlein, Barbara -- Brownfield, Doug G -- Wu, Angela R -- Neff, Norma F -- Mantalas, Gary L -- Espinoza, F Hernan -- Desai, Tushar J -- Krasnow, Mark A -- Quake, Stephen R -- 5K08HL084095/HL/NHLBI NIH HHS/ -- K08 HL084095/HL/NHLBI NIH HHS/ -- T32 HD007249/HD/NICHD NIH HHS/ -- T32HD007249/HD/NICHD NIH HHS/ -- U01 HL099995/HL/NHLBI NIH HHS/ -- U01 HL099999/HL/NHLBI NIH HHS/ -- U01HL099995/HL/NHLBI NIH HHS/ -- U01HL099999/HL/NHLBI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 May 15;509(7500):371-5. doi: 10.1038/nature13173. Epub 2014 Apr 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Departments of Bioengineering and Applied Physics, Stanford University School of Medicine and Howard Hughes Medical Institute, Stanford, California 94305, USA [2]. ; 1] Department of Biochemistry, Stanford University School of Medicine and Howard Hughes Medical Institute, Stanford, California 94305, USA [2]. ; Departments of Bioengineering and Applied Physics, Stanford University School of Medicine and Howard Hughes Medical Institute, Stanford, California 94305, USA. ; Department of Biochemistry, Stanford University School of Medicine and Howard Hughes Medical Institute, Stanford, California 94305, USA. ; Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Stanford University School of Medicine, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24739965" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bronchi/cytology ; Cell Differentiation/genetics ; Cell Lineage/*genetics ; Epithelial Cells/classification/*cytology/*metabolism ; Female ; Genetic Markers ; Genome/genetics ; Genomics ; Lung/*cytology/embryology ; Mice ; Mice, Inbred C57BL ; Pulmonary Alveoli/cytology ; Pulmonary Gas Exchange ; Sequence Analysis, RNA/*methods ; Single-Cell Analysis/*methods ; Stem Cells/cytology ; Transcriptome/genetics
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  • 75
    Publication Date: 2014-11-11
    Description: Inactivation of APC is a strongly predisposing event in the development of colorectal cancer, prompting the search for vulnerabilities specific to cells that have lost APC function. Signalling through the mTOR pathway is known to be required for epithelial cell proliferation and tumour growth, and the current paradigm suggests that a critical function of mTOR activity is to upregulate translational initiation through phosphorylation of 4EBP1 (refs 6, 7). This model predicts that the mTOR inhibitor rapamycin, which does not efficiently inhibit 4EBP1 (ref. 8), would be ineffective in limiting cancer progression in APC-deficient lesions. Here we show in mice that mTOR complex 1 (mTORC1) activity is absolutely required for the proliferation of Apc-deficient (but not wild-type) enterocytes, revealing an unexpected opportunity for therapeutic intervention. Although APC-deficient cells show the expected increases in protein synthesis, our study reveals that it is translation elongation, and not initiation, which is the rate-limiting component. Mechanistically, mTORC1-mediated inhibition of eEF2 kinase is required for the proliferation of APC-deficient cells. Importantly, treatment of established APC-deficient adenomas with rapamycin (which can target eEF2 through the mTORC1-S6K-eEF2K axis) causes tumour cells to undergo growth arrest and differentiation. Taken together, our data suggest that inhibition of translation elongation using existing, clinically approved drugs, such as the rapalogs, would provide clear therapeutic benefit for patients at high risk of developing colorectal cancer.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4304784/" 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/PMC4304784/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Faller, William J -- Jackson, Thomas J -- Knight, John R P -- Ridgway, Rachel A -- Jamieson, Thomas -- Karim, Saadia A -- Jones, Carolyn -- Radulescu, Sorina -- Huels, David J -- Myant, Kevin B -- Dudek, Kate M -- Casey, Helen A -- Scopelliti, Alessandro -- Cordero, Julia B -- Vidal, Marcos -- Pende, Mario -- Ryazanov, Alexey G -- Sonenberg, Nahum -- Meyuhas, Oded -- Hall, Michael N -- Bushell, Martin -- Willis, Anne E -- Sansom, Owen J -- 311301/European Research Council/International -- A7130/Cancer Research UK/United Kingdom -- G1000078/1/National Centre for the Replacement, Refinement and Reduction of Animals in Research/United Kingdom -- MC_UP_A600_1023/Medical Research Council/United Kingdom -- Cancer Research UK/United Kingdom -- England -- Nature. 2015 Jan 22;517(7535):497-500. doi: 10.1038/nature13896. Epub 2014 Nov 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research UK Beatson Institute, Glasgow G61 1BD, UK. ; Medical Research Council Toxicology Unit, Leicester LE1 9HN, UK. ; Institut Necker-Enfants Malades, CS 61431, Paris, France Institut National de la Sante et de la Recherche Medicale, U1151, F-75014 Paris, France Universite Paris Descartes, Sorbonne Paris Cite, 75006 Paris, France. ; Department of Pharmacology, Rutgers The State University of New Jersey, Robert Wood Johnson Medical School, Piscataway, New Jersey 08854, USA. ; Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montreal, Quebec H3A 1A3, Canada. ; Department of Biochemistry and Molecular Biology, IMRIC, The Hebrew University-Hadassah Medical School, Jerusalem 91120, Israel. ; Biozentrum, University of Basel, CH-4056 Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25383520" target="_blank"〉PubMed〈/a〉
    Keywords: Adenomatous Polyposis Coli Protein/deficiency/genetics ; Animals ; Cell Proliferation ; Cell Transformation, Neoplastic/metabolism/*pathology ; Elongation Factor 2 Kinase/deficiency/genetics/metabolism ; Enzyme Activation ; Genes, APC ; Intestinal Neoplasms/genetics/*metabolism/*pathology ; Male ; Mice ; Mice, Inbred C57BL ; Multiprotein Complexes/*metabolism ; Oncogene Protein p55(v-myc)/metabolism ; *Peptide Chain Elongation, Translational ; Peptide Elongation Factor 2/metabolism ; Ribosomal Protein S6 Kinases/metabolism ; Signal Transduction ; TOR Serine-Threonine Kinases/*metabolism ; Wnt Proteins/metabolism
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  • 76
    Publication Date: 2014-01-31
    Description: Recent clinical trials showed that targeting of inhibitory receptors on T cells induces durable responses in a subset of cancer patients, despite advanced disease. However, the regulatory switches controlling T-cell function in immunosuppressive tumours are not well understood. Here we show that such inhibitory mechanisms can be systematically discovered in the tumour microenvironment. We devised an in vivo pooled short hairpin RNA (shRNA) screen in which shRNAs targeting negative regulators became highly enriched in murine tumours by releasing a block on T-cell proliferation upon tumour antigen recognition. Such shRNAs were identified by deep sequencing of the shRNA cassette from T cells infiltrating tumour or control tissues. One of the target genes was Ppp2r2d, a regulatory subunit of the PP2A phosphatase family. In tumours, Ppp2r2d knockdown inhibited T-cell apoptosis and enhanced T-cell proliferation as well as cytokine production. Key regulators of immune function can therefore be discovered in relevant tissue microenvironments.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4052214/" 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/PMC4052214/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, Penghui -- Shaffer, Donald R -- Alvarez Arias, Diana A -- Nakazaki, Yukoh -- Pos, Wouter -- Torres, Alexis J -- Cremasco, Viviana -- Dougan, Stephanie K -- Cowley, Glenn S -- Elpek, Kutlu -- Brogdon, Jennifer -- Lamb, John -- Turley, Shannon J -- Ploegh, Hidde L -- Root, David E -- Love, J Christopher -- Dranoff, Glenn -- Hacohen, Nir -- Cantor, Harvey -- Wucherpfennig, Kai W -- 1R01CA173750/CA/NCI NIH HHS/ -- DP3 DK097681/DK/NIDDK NIH HHS/ -- P01 AI045757/AI/NIAID NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- R01 CA173750/CA/NCI NIH HHS/ -- T32 AI007386/AI/NIAID NIH HHS/ -- T32 AI07386/AI/NIAID NIH HHS/ -- England -- Nature. 2014 Feb 6;506(7486):52-7. doi: 10.1038/nature12988. Epub 2014 Jan 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA [2]. ; 1] Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA [2] [3] Jounce Therapeutics, Cambridge, Massachusetts 02138, USA. ; Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA. ; David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA. ; Whitehead Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA. ; Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA. ; 1] Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA [2] Jounce Therapeutics, Cambridge, Massachusetts 02138, USA. ; Novartis Institutes for Biomedical Research, Cambridge, Massachusetts 02139, USA. ; Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24476824" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Neoplasm/immunology ; Apoptosis/immunology ; CD4-Positive T-Lymphocytes/immunology ; CD8-Positive T-Lymphocytes/cytology/immunology/secretion ; Cell Proliferation ; Cytokines/immunology/secretion ; Female ; Gene Knockdown Techniques ; High-Throughput Nucleotide Sequencing ; *Immunotherapy/methods ; Lymphocytes, Tumor-Infiltrating/cytology/immunology/metabolism/secretion ; Melanoma, Experimental/immunology ; Mice ; Mice, Inbred C57BL ; *Molecular Targeted Therapy ; Protein Phosphatase 2/deficiency/genetics/*metabolism ; RNA, Small Interfering/genetics ; Reproducibility of Results ; Tumor Microenvironment/*immunology
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  • 77
    Publication Date: 2014-04-11
    Description: Targeted genome editing technologies are powerful tools for studying biology and disease, and have a broad range of research applications. In contrast to the rapid development of toolkits to manipulate individual genes, large-scale screening methods based on the complete loss of gene expression are only now beginning to be developed. Here we report the development of a focused CRISPR/Cas-based (clustered regularly interspaced short palindromic repeats/CRISPR-associated) lentiviral library in human cells and a method of gene identification based on functional screening and high-throughput sequencing analysis. Using knockout library screens, we successfully identified the host genes essential for the intoxication of cells by anthrax and diphtheria toxins, which were confirmed by functional validation. The broad application of this powerful genetic screening strategy will not only facilitate the rapid identification of genes important for bacterial toxicity but will also enable the discovery of genes that participate in other biological processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, Yuexin -- Zhu, Shiyou -- Cai, Changzu -- Yuan, Pengfei -- Li, Chunmei -- Huang, Yanyi -- Wei, Wensheng -- England -- Nature. 2014 May 22;509(7501):487-91. doi: 10.1038/nature13166. Epub 2014 Apr 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing 100871, China [2]. ; State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing 100871, China. ; Biodynamic Optical Imaging Centre (BIOPIC), College of Engineering, Peking University, Beijing 100871, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24717434" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, Bacterial/pharmacology ; Bacterial Toxins/pharmacology ; CRISPR-Associated Proteins/*genetics ; Cell Line ; Cells/drug effects/*metabolism ; Clustered Regularly Interspaced Short Palindromic Repeats/*genetics ; Diphtheria Toxin/pharmacology ; *Gene Library ; Genomics/*methods ; High-Throughput Screening Assays/*methods ; Humans ; INDEL Mutation/genetics ; Lentivirus/genetics ; Organic Cation Transporter 1/genetics ; RNA, Guide/genetics ; Reproducibility of Results
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  • 78
    Publication Date: 2014-11-05
    Description: Whole exome sequencing has proven to be a powerful tool for understanding the genetic architecture of human disease. Here we apply it to more than 2,500 simplex families, each having a child with an autistic spectrum disorder. By comparing affected to unaffected siblings, we show that 13% of de novo missense mutations and 43% of de novo likely gene-disrupting (LGD) mutations contribute to 12% and 9% of diagnoses, respectively. Including copy number variants, coding de novo mutations contribute to about 30% of all simplex and 45% of female diagnoses. Almost all LGD mutations occur opposite wild-type alleles. LGD targets in affected females significantly overlap the targets in males of lower intelligence quotient (IQ), but neither overlaps significantly with targets in males of higher IQ. We estimate that LGD mutation in about 400 genes can contribute to the joint class of affected females and males of lower IQ, with an overlapping and similar number of genes vulnerable to contributory missense mutation. LGD targets in the joint class overlap with published targets for intellectual disability and schizophrenia, and are enriched for chromatin modifiers, FMRP-associated genes and embryonically expressed genes. Most of the significance for the latter comes from affected females.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4313871/" 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/PMC4313871/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iossifov, Ivan -- O'Roak, Brian J -- Sanders, Stephan J -- Ronemus, Michael -- Krumm, Niklas -- Levy, Dan -- Stessman, Holly A -- Witherspoon, Kali T -- Vives, Laura -- Patterson, Karynne E -- Smith, Joshua D -- Paeper, Bryan -- Nickerson, Deborah A -- Dea, Jeanselle -- Dong, Shan -- Gonzalez, Luis E -- Mandell, Jeffrey D -- Mane, Shrikant M -- Murtha, Michael T -- Sullivan, Catherine A -- Walker, Michael F -- Waqar, Zainulabedin -- Wei, Liping -- Willsey, A Jeremy -- Yamrom, Boris -- Lee, Yoon-ha -- Grabowska, Ewa -- Dalkic, Ertugrul -- Wang, Zihua -- Marks, Steven -- Andrews, Peter -- Leotta, Anthony -- Kendall, Jude -- Hakker, Inessa -- Rosenbaum, Julie -- Ma, Beicong -- Rodgers, Linda -- Troge, Jennifer -- Narzisi, Giuseppe -- Yoon, Seungtai -- Schatz, Michael C -- Ye, Kenny -- McCombie, W Richard -- Shendure, Jay -- Eichler, Evan E -- State, Matthew W -- Wigler, Michael -- P30 CA016359/CA/NCI NIH HHS/ -- T32 GM007266/GM/NIGMS NIH HHS/ -- U54 HD083091/HD/NICHD NIH HHS/ -- UL1 TR000142/TR/NCATS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Nov 13;515(7526):216-21. doi: 10.1038/nature13908. Epub 2014 Oct 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA. ; 1] Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA [2] Molecular &Medical Genetics, Oregon Health &Science University, Portland, Oregon 97208, USA. ; 1] Department of Psychiatry, University of California, San Francisco, San Francisco, California 94158, USA [2] Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA. ; Department of Psychiatry, University of California, San Francisco, San Francisco, California 94158, USA. ; 1] Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520, USA [2] Center for Bioinformatics, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China. ; Child Study Center, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Yale Center for Genomic Analysis, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; 1] Center for Bioinformatics, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China [2] National Institute of Biological Sciences, Beijing 102206, China. ; 1] Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA [2] New York Genome Center, New York, New York 10013, USA. ; 1] Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA [2] Department of Medical Biology, Bulent Ecevit University School of Medicine, 67600 Zonguldak, Turkey. ; Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York 10461, USA. ; 1] Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA [2] Howard Hughes Medical Institute, Seattle, Washington 98195, USA. ; 1] Department of Psychiatry, University of California, San Francisco, San Francisco, California 94158, USA [2] Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520, USA [3] Child Study Center, Yale University School of Medicine, New Haven, Connecticut 06520, USA [4] Department of Psychiatry, 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/25363768" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Child Development Disorders, Pervasive/*genetics ; Cluster Analysis ; Exome/genetics ; Female ; Genes ; Genetic Predisposition to Disease/*genetics ; Humans ; Intelligence Tests ; Male ; Mutation/*genetics ; Open Reading Frames/*genetics ; Reproducibility of Results
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  • 79
    Publication Date: 2014-11-05
    Description: T-cell immunoglobulin domain and mucin domain-3 (TIM-3, also known as HAVCR2) is an activation-induced inhibitory molecule involved in tolerance and shown to induce T-cell exhaustion in chronic viral infection and cancers. Under some conditions, TIM-3 expression has also been shown to be stimulatory. Considering that TIM-3, like cytotoxic T lymphocyte antigen 4 (CTLA-4) and programmed death 1 (PD-1), is being targeted for cancer immunotherapy, it is important to identify the circumstances under which TIM-3 can inhibit and activate T-cell responses. Here we show that TIM-3 is co-expressed and forms a heterodimer with carcinoembryonic antigen cell adhesion molecule 1 (CEACAM1), another well-known molecule expressed on activated T cells and involved in T-cell inhibition. Biochemical, biophysical and X-ray crystallography studies show that the membrane-distal immunoglobulin-variable (IgV)-like amino-terminal domain of each is crucial to these interactions. The presence of CEACAM1 endows TIM-3 with inhibitory function. CEACAM1 facilitates the maturation and cell surface expression of TIM-3 by forming a heterodimeric interaction in cis through the highly related membrane-distal N-terminal domains of each molecule. CEACAM1 and TIM-3 also bind in trans through their N-terminal domains. Both cis and trans interactions between CEACAM1 and TIM-3 determine the tolerance-inducing function of TIM-3. In a mouse adoptive transfer colitis model, CEACAM1-deficient T cells are hyper-inflammatory with reduced cell surface expression of TIM-3 and regulatory cytokines, and this is restored by T-cell-specific CEACAM1 expression. During chronic viral infection and in a tumour environment, CEACAM1 and TIM-3 mark exhausted T cells. Co-blockade of CEACAM1 and TIM-3 leads to enhancement of anti-tumour immune responses with improved elimination of tumours in mouse colorectal cancer models. Thus, CEACAM1 serves as a heterophilic ligand for TIM-3 that is required for its ability to mediate T-cell inhibition, and this interaction has a crucial role in regulating autoimmunity and anti-tumour immunity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4297519/" 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/PMC4297519/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, Yu-Hwa -- Zhu, Chen -- Kondo, Yasuyuki -- Anderson, Ana C -- Gandhi, Amit -- Russell, Andrew -- Dougan, Stephanie K -- Petersen, Britt-Sabina -- Melum, Espen -- Pertel, Thomas -- Clayton, Kiera L -- Raab, Monika -- Chen, Qiang -- Beauchemin, Nicole -- Yazaki, Paul J -- Pyzik, Michal -- Ostrowski, Mario A -- Glickman, Jonathan N -- Rudd, Christopher E -- Ploegh, Hidde L -- Franke, Andre -- Petsko, Gregory A -- Kuchroo, Vijay K -- Blumberg, Richard S -- AI039671/AI/NIAID NIH HHS/ -- AI056299/AI/NIAID NIH HHS/ -- AI073748/AI/NIAID NIH HHS/ -- DK0034854/DK/NIDDK NIH HHS/ -- DK044319/DK/NIDDK NIH HHS/ -- DK051362/DK/NIDDK NIH HHS/ -- DK053056/DK/NIDDK NIH HHS/ -- DK088199/DK/NIDDK NIH HHS/ -- GM32415/GM/NIGMS NIH HHS/ -- MOP-93787/Canadian Institutes of Health Research/Canada -- NS045937/NS/NINDS NIH HHS/ -- P01 AI039671/AI/NIAID NIH HHS/ -- P01 AI056299/AI/NIAID NIH HHS/ -- P01 AI073748/AI/NIAID NIH HHS/ -- P30 DK034854/DK/NIDDK NIH HHS/ -- P41 GM111244/GM/NIGMS NIH HHS/ -- R01 DK051362/DK/NIDDK NIH HHS/ -- R01 GM026788/GM/NIGMS NIH HHS/ -- R01 NS045937/NS/NINDS NIH HHS/ -- T32 GM007122/GM/NIGMS NIH HHS/ -- UL1 TR001102/TR/NCATS NIH HHS/ -- England -- Nature. 2015 Jan 15;517(7534):386-90. doi: 10.1038/nature13848. Epub 2014 Oct 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, Massachusetts 02115, USA. ; Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Harvard Institutes of Medicine, 77 Avenue Louis Pasteur, Boston, Massachusetts 02115, USA. ; Rosenstiel Basic Medical Sciences Research Center, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA. ; Whitehead Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA. ; Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel 24105, Germany. ; 1] Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, Massachusetts 02115, USA [2] Norwegian PSC Research Center, Division of Cancer Medicine, Surgery and Transplantation, Oslo University Hospital, Oslo 0424, Norway. ; Department of Immunology, University of Toronto, Toronto, Ontario M5S1A8, Canada. ; Cell Signalling Section, Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK. ; State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China. ; Goodman Cancer Research Centre, McGill University, Montreal H3G 1Y6, Canada. ; Beckman Institute, City of Hope, Duarte, California 91010, USA. ; 1] Department of Immunology, University of Toronto, Toronto, Ontario M5S1A8, Canada [2] Keenan Research Centre of St. Michael's Hospital, Toronto, Ontario M5S1A8, Canada. ; GI Pathology, Miraca Life Sciences, Newton, Massachusetts 02464, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25363763" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/chemistry/immunology/*metabolism ; Autoimmunity/immunology ; Cell Adhesion Molecules/chemistry/immunology/*metabolism ; Cell Line ; Colorectal Neoplasms/immunology ; Disease Models, Animal ; Female ; Humans ; Immune Tolerance/*immunology ; Inflammation/immunology/pathology ; Ligands ; Male ; Membrane Proteins/chemistry/immunology/*metabolism ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Models, Molecular ; Mucous Membrane/immunology/pathology ; Protein Conformation ; Protein Multimerization ; Receptors, Virus/chemistry/immunology/*metabolism ; T-Lymphocytes/*immunology/*metabolism
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  • 80
    Publication Date: 2014-10-16
    Description: Brown adipose tissue (BAT) is specialized in energy expenditure, making it a potential target for anti-obesity therapies. Following exposure to cold, BAT is activated by the sympathetic nervous system with concomitant release of catecholamines and activation of beta-adrenergic receptors. Because BAT therapies based on cold exposure or beta-adrenergic agonists are clinically not feasible, alternative strategies must be explored. Purinergic co-transmission might be involved in sympathetic control of BAT and previous studies reported inhibitory effects of the purinergic transmitter adenosine in BAT from hamster or rat. However, the role of adenosine in human BAT is unknown. Here we show that adenosine activates human and murine brown adipocytes at low nanomolar concentrations. Adenosine is released in BAT during stimulation of sympathetic nerves as well as from brown adipocytes. The adenosine A2A receptor is the most abundant adenosine receptor in human and murine BAT. Pharmacological blockade or genetic loss of A2A receptors in mice causes a decrease in BAT-dependent thermogenesis, whereas treatment with A2A agonists significantly increases energy expenditure. Moreover, pharmacological stimulation of A2A receptors or injection of lentiviral vectors expressing the A2A receptor into white fat induces brown-like cells-so-called beige adipocytes. Importantly, mice fed a high-fat diet and treated with an A2A agonist are leaner with improved glucose tolerance. Taken together, our results demonstrate that adenosine-A2A signalling plays an unexpected physiological role in sympathetic BAT activation and protects mice from diet-induced obesity. Those findings reveal new possibilities for developing novel obesity therapies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gnad, Thorsten -- Scheibler, Saskia -- von Kugelgen, Ivar -- Scheele, Camilla -- Kilic, Ana -- Glode, Anja -- Hoffmann, Linda S -- Reverte-Salisa, Laia -- Horn, Philipp -- Mutlu, Samet -- El-Tayeb, Ali -- Kranz, Mathias -- Deuther-Conrad, Winnie -- Brust, Peter -- Lidell, Martin E -- Betz, Matthias J -- Enerback, Sven -- Schrader, Jurgen -- Yegutkin, Gennady G -- Muller, Christa E -- Pfeifer, Alexander -- England -- Nature. 2014 Dec 18;516(7531):395-9. doi: 10.1038/nature13816. Epub 2014 Oct 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Pharmacology and Toxicology, University Hospital, University of Bonn, 53127 Bonn, Germany. ; 1] Institute of Pharmacology and Toxicology, University Hospital, University of Bonn, 53127 Bonn, Germany [2] Research Training Group 1873, University of Bonn, 53127 Bonn, Germany. ; The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Department of Infectious Diseases, Rigshospitalet, 2100 Copenhagen, Denmark. ; Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, 53121 Bonn, Germany. ; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiopharmaceutical Cancer Research, Research Site Leipzig, 04318 Leipzig, Germany. ; Department of Medical and Clinical Genetics, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, 413 90 Gothenburg, Sweden. ; Department for Molecular Cardiology, University of Dusseldorf, 40225 Dusseldorf, Germany. ; Medicity Research Laboratory, University of Turku, 20520 Turku, Finland. ; 1] Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, 53121 Bonn, Germany [2] Pharma Center, University of Bonn, 53127 Bonn, Germany. ; 1] Institute of Pharmacology and Toxicology, University Hospital, University of Bonn, 53127 Bonn, Germany [2] Pharma Center, University of Bonn, 53127 Bonn, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25317558" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/analogs & derivatives/*metabolism/pharmacology ; Adenosine A2 Receptor Agonists/pharmacology ; Adipocytes/*metabolism ; Adipose Tissue, Brown/drug effects/*metabolism ; Animals ; Cells, Cultured ; Cricetinae ; Diet ; Humans ; Male ; Mesocricetus ; Mice ; Mice, Inbred C57BL ; Phenethylamines/pharmacology ; Receptor, Adenosine A2A/*metabolism
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  • 81
    Publication Date: 2014-04-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCullough, Michael E -- Kelly, David L -- England -- Nature. 2014 Apr 17;508(7496):319. doi: 10.1038/508319c.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Miami, Coral Gables, Florida, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24740058" target="_blank"〉PubMed〈/a〉
    Keywords: Publishing/standards ; Reproducibility of Results ; Research/economics/*standards ; *Research Design ; Research Personnel/standards
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 82
    facet.materialart.
    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2014-05-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉England -- Nature. 2014 May 22;509(7501):399.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24860878" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Specimen Banks ; Disease ; Disease Models, Animal ; Drug Discovery/methods ; Genome/*genetics ; Mice/*genetics ; Mice, Knockout/*genetics ; Mice, Mutant Strains ; *Phenotype ; Reproducibility of Results
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  • 83
    Publication Date: 2014-11-11
    Description: beta-catenin is a multi-functional protein that has an important role in the mature central nervous system; its dysfunction has been implicated in several neuropsychiatric disorders, including depression. Here we show that in mice beta-catenin mediates pro-resilient and anxiolytic effects in the nucleus accumbens, a key brain reward region, an effect mediated by D2-type medium spiny neurons. Using genome-wide beta-catenin enrichment mapping, we identify Dicer1-important in small RNA (for example, microRNA) biogenesis--as a beta-catenin target gene that mediates resilience. Small RNA profiling after excising beta-catenin from nucleus accumbens in the context of chronic stress reveals beta-catenin-dependent microRNA regulation associated with resilience. Together, these findings establish beta-catenin as a critical regulator in the development of behavioural resilience, activating a network that includes Dicer1 and downstream microRNAs. We thus present a foundation for the development of novel therapeutic targets to promote stress resilience.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4257892/" 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/PMC4257892/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dias, Caroline -- Feng, Jian -- Sun, Haosheng -- Shao, Ning Yi -- Mazei-Robison, Michelle S -- Damez-Werno, Diane -- Scobie, Kimberly -- Bagot, Rosemary -- LaBonte, Benoit -- Ribeiro, Efrain -- Liu, XiaoChuan -- Kennedy, Pamela -- Vialou, Vincent -- Ferguson, Deveroux -- Pena, Catherine -- Calipari, Erin S -- Koo, Ja Wook -- Mouzon, Ezekiell -- Ghose, Subroto -- Tamminga, Carol -- Neve, Rachael -- Shen, Li -- Nestler, Eric J -- P50 MH096890/MH/NIMH NIH HHS/ -- R00 MH094405/MH/NIMH NIH HHS/ -- England -- Nature. 2014 Dec 4;516(7529):51-5. doi: 10.1038/nature13976. Epub 2014 Nov 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA. ; Department of Psychiatry, University of Texas Southwestern, Dallas, Texas 75390, USA. ; Department of Brain and Cognitive Sciences, 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/25383518" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological/genetics ; Animals ; DEAD-box RNA Helicases/*genetics/metabolism ; Depression/physiopathology ; Gene Expression Profiling ; *Gene Expression Regulation ; Genome-Wide Association Study ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; MicroRNAs/*genetics/metabolism ; Neurons/metabolism ; *Resilience, Psychological ; Ribonuclease III/*genetics/metabolism ; Signal Transduction ; Stress, Physiological/*genetics ; beta Catenin/genetics/*metabolism
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  • 84
    Publication Date: 2014-08-01
    Description: Liver cirrhosis occurs as a consequence of many chronic liver diseases that are prevalent worldwide. Here we characterize the gut microbiome in liver cirrhosis by comparing 98 patients and 83 healthy control individuals. We build a reference gene set for the cohort containing 2.69 million genes, 36.1% of which are novel. Quantitative metagenomics reveals 75,245 genes that differ in abundance between the patients and healthy individuals (false discovery rate 〈 0.0001) and can be grouped into 66 clusters representing cognate bacterial species; 28 are enriched in patients and 38 in control individuals. Most (54%) of the patient-enriched, taxonomically assigned species are of buccal origin, suggesting an invasion of the gut from the mouth in liver cirrhosis. Biomarkers specific to liver cirrhosis at gene and function levels are revealed by a comparison with those for type 2 diabetes and inflammatory bowel disease. On the basis of only 15 biomarkers, a highly accurate patient discrimination index is created and validated on an independent cohort. Thus microbiota-targeted biomarkers may be a powerful tool for diagnosis of different diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Qin, Nan -- Yang, Fengling -- Li, Ang -- Prifti, Edi -- Chen, Yanfei -- Shao, Li -- Guo, Jing -- Le Chatelier, Emmanuelle -- Yao, Jian -- Wu, Lingjiao -- Zhou, Jiawei -- Ni, Shujun -- Liu, Lin -- Pons, Nicolas -- Batto, Jean Michel -- Kennedy, Sean P -- Leonard, Pierre -- Yuan, Chunhui -- Ding, Wenchao -- Chen, Yuanting -- Hu, Xinjun -- Zheng, Beiwen -- Qian, Guirong -- Xu, Wei -- Ehrlich, S Dusko -- Zheng, Shusen -- Li, Lanjuan -- England -- Nature. 2014 Sep 4;513(7516):59-64. doi: 10.1038/nature13568. Epub 2014 Jul 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] State Key Laboratory for Diagnosis and Treatment of Infectious Disease, The First Affiliated Hospital, College of Medicine, Zhejiang University, 310003 Hangzhou, China [2] Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, 310003 Hangzhou, China [3]. ; 1] State Key Laboratory for Diagnosis and Treatment of Infectious Disease, The First Affiliated Hospital, College of Medicine, Zhejiang University, 310003 Hangzhou, China [2]. ; 1] Metagenopolis, Institut National de la Recherche Agronomique, 78350 Jouy en Josas, France [2]. ; State Key Laboratory for Diagnosis and Treatment of Infectious Disease, The First Affiliated Hospital, College of Medicine, Zhejiang University, 310003 Hangzhou, China. ; Metagenopolis, Institut National de la Recherche Agronomique, 78350 Jouy en Josas, France. ; 1] State Key Laboratory for Diagnosis and Treatment of Infectious Disease, The First Affiliated Hospital, College of Medicine, Zhejiang University, 310003 Hangzhou, China [2] Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, 310003 Hangzhou, China. ; 1] Metagenopolis, Institut National de la Recherche Agronomique, 78350 Jouy en Josas, France [2] King's College London, Centre for Host-Microbiome Interactions, Dental Institute Central Office, Guy's Hospital, London Bridge, London SE1 9RT, UK. ; 1] Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, 310003 Hangzhou, China [2] Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, the First Affiliated Hospital, Zhejiang University, 310003 Hangzhou, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25079328" target="_blank"〉PubMed〈/a〉
    Keywords: Case-Control Studies ; Chronic Disease ; Diabetes Mellitus, Type 2/microbiology ; Feces/microbiology ; Gastrointestinal Tract/*microbiology ; Genetic Markers/genetics ; Health ; Humans ; Inflammatory Bowel Diseases/microbiology ; Liver Cirrhosis/*diagnosis/*microbiology ; *Metagenomics ; Microbiota/*genetics/*physiology ; Mouth/microbiology ; Phylogeny ; Reproducibility of Results
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  • 85
    Publication Date: 2014-05-09
    Description: The motor cortex is capable of reliably driving complex movements yet exhibits considerable plasticity during motor learning. These observations suggest that the fundamental relationship between motor cortex activity and movement may not be fixed but is instead shaped by learning; however, to what extent and how motor learning shapes this relationship are not fully understood. Here we addressed this issue by using in vivo two-photon calcium imaging to monitor the activity of the same population of hundreds of layer 2/3 neurons while mice learned a forelimb lever-press task over two weeks. Excitatory and inhibitory neurons were identified by transgenic labelling. Inhibitory neuron activity was relatively stable and balanced local excitatory neuron activity on a movement-by-movement basis, whereas excitatory neuron activity showed higher dynamism during the initial phase of learning. The dynamics of excitatory neurons during the initial phase involved the expansion of the movement-related population which explored various activity patterns even during similar movements. This was followed by a refinement into a smaller population exhibiting reproducible spatiotemporal sequences of activity. This pattern of activity associated with the learned movement was unique to expert animals and not observed during similar movements made during the naive phase, and the relationship between neuronal activity and individual movements became more consistent with learning. These changes in population activity coincided with a transient increase in dendritic spine turnover in these neurons. Our results indicate that a novel and reproducible activity-movement relationship develops as a result of motor learning, and we speculate that synaptic plasticity within the motor cortex underlies the emergence of reproducible spatiotemporal activity patterns for learned movements. These results underscore the profound influence of learning on the way that the cortex produces movements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peters, Andrew J -- Chen, Simon X -- Komiyama, Takaki -- AG000216/AG/NIA NIH HHS/ -- England -- Nature. 2014 Jun 12;510(7504):263-7. doi: 10.1038/nature13235. Epub 2014 May 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Neurobiology Section, Center for Neural Circuits and Behavior, and Department of Neurosciences, University of California, San Diego, La Jolla, California 92093, USA. ; 1] Neurobiology Section, Center for Neural Circuits and Behavior, and Department of Neurosciences, University of California, San Diego, La Jolla, California 92093, USA [2] JST, PRESTO, University of California, San Diego, La Jolla, California 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24805237" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Dendritic Spines/physiology ; Female ; Forelimb/physiology ; Learning/*physiology ; Male ; Mice ; Models, Neurological ; Motor Cortex/*physiology ; Motor Skills/*physiology ; Neural Inhibition ; Neuronal Plasticity/physiology ; Reproducibility of Results ; *Spatio-Temporal Analysis
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  • 86
    Publication Date: 2014-11-11
    Description: Lysosomal degradation of cytoplasmic components by autophagy is essential for cellular survival and homeostasis under nutrient-deprived conditions. Acute regulation of autophagy by nutrient-sensing kinases is well defined, but longer-term transcriptional regulation is relatively unknown. Here we show that the fed-state sensing nuclear receptor farnesoid X receptor (FXR) and the fasting transcriptional activator cAMP response element-binding protein (CREB) coordinately regulate the hepatic autophagy gene network. Pharmacological activation of FXR repressed many autophagy genes and inhibited autophagy even in fasted mice, and feeding-mediated inhibition of macroautophagy was attenuated in FXR-knockout mice. From mouse liver chromatin immunoprecipitation and high-throughput sequencing data, FXR and CREB binding peaks were detected at 178 and 112 genes, respectively, out of 230 autophagy-related genes, and 78 genes showed shared binding, mostly in their promoter regions. CREB promoted autophagic degradation of lipids, or lipophagy, under nutrient-deprived conditions, and FXR inhibited this response. Mechanistically, CREB upregulated autophagy genes, including Atg7, Ulk1 and Tfeb, by recruiting the coactivator CRTC2. After feeding or pharmacological activation, FXR trans-repressed these genes by disrupting the functional CREB-CRTC2 complex. This study identifies the new FXR-CREB axis as a key physiological switch regulating autophagy, resulting in sustained nutrient regulation of autophagy during feeding/fasting cycles.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4257899/" 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/PMC4257899/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seok, Sunmi -- Fu, Ting -- Choi, Sung-E -- Li, Yang -- Zhu, Rong -- Kumar, Subodh -- Sun, Xiaoxiao -- Yoon, Gyesoon -- Kang, Yup -- Zhong, Wenxuan -- Ma, Jian -- Kemper, Byron -- Kemper, Jongsook Kim -- DK62777/DK/NIDDK NIH HHS/ -- DK95842/DK/NIDDK NIH HHS/ -- R01 DK062777/DK/NIDDK NIH HHS/ -- R01 DK095842/DK/NIDDK NIH HHS/ -- England -- Nature. 2014 Dec 4;516(7529):108-11. doi: 10.1038/nature13949. Epub 2014 Nov 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA. ; 1] Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA [2] Institute for Medical Science, Ajou University School of Medicine, Suwon 442-749, Korea. ; Department of Bioengineering and the Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA. ; Department of Statistics, University of Georgia, Athens, Gerogia 30602, USA. ; Institute for Medical Science, Ajou University School of Medicine, Suwon 442-749, Korea.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25383523" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autophagy/*genetics ; Cyclic AMP Response Element-Binding Protein/*metabolism ; Fasting/physiology ; *Gene Expression Regulation/drug effects ; Isoxazoles/pharmacology ; Liver/cytology/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Protein Binding ; Receptors, Cytoplasmic and Nuclear/agonists/*metabolism
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  • 87
    Publication Date: 2014-03-22
    Description: Plasma membrane pannexin 1 channels (PANX1) release nucleotide find-me signals from apoptotic cells to attract phagocytes. Here we show that the quinolone antibiotic trovafloxacin is a novel PANX1 inhibitor, by using a small-molecule screen. Although quinolones are widely used to treat bacterial infections, some quinolones have unexplained side effects, including deaths among children. PANX1 is a direct target of trovafloxacin at drug concentrations seen in human plasma, and its inhibition led to dysregulated fragmentation of apoptotic cells. Genetic loss of PANX1 phenocopied trovafloxacin effects, revealing a non-redundant role for pannexin channels in regulating cellular disassembly during apoptosis. Increase in drug-resistant bacteria worldwide and the dearth of new antibiotics is a major human health challenge. Comparing different quinolone antibiotics suggests that certain structural features may contribute to PANX1 blockade. These data identify a novel linkage between an antibiotic, pannexin channels and cellular integrity, and suggest that re-engineering certain quinolones might help develop newer antibacterials.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4078991/" 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/PMC4078991/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Poon, Ivan K H -- Chiu, Yu-Hsin -- Armstrong, Allison J -- Kinchen, Jason M -- Juncadella, Ignacio J -- Bayliss, Douglas A -- Ravichandran, Kodi S -- 107848/PHS HHS/ -- R01 GM064709/GM/NIGMS NIH HHS/ -- R01 GM107848/GM/NIGMS NIH HHS/ -- T32 AI007496/AI/NIAID NIH HHS/ -- England -- Nature. 2014 Mar 20;507(7492):329-34. doi: 10.1038/nature13147. Epub 2014 Mar 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] The Center for Cell Clearance, University of Virginia, Charlottesville, Virginia 22908, USA [2] Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, Virginia 22908, USA [3] Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, Virginia 22908, USA [4] La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia. ; Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, USA. ; 1] The Center for Cell Clearance, University of Virginia, Charlottesville, Virginia 22908, USA [2] Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, Virginia 22908, USA [3] Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, Virginia 22908, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24646995" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/*adverse effects/blood/*pharmacology ; Apoptosis/*drug effects ; Connexins/*antagonists & inhibitors/deficiency/genetics/metabolism ; Drug Discovery/methods ; Female ; Fluoroquinolones/*adverse effects/blood/*pharmacology ; Humans ; Jurkat Cells ; Male ; Mice ; Mice, Inbred C57BL ; Naphthyridines/*adverse effects/blood/*pharmacology ; Nerve Tissue Proteins/*antagonists & inhibitors/deficiency/genetics/metabolism ; Thymocytes/cytology/drug effects/metabolism
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  • 88
    Publication Date: 2014-06-05
    Description: Intracranial germ cell tumours (IGCTs) are a group of rare heterogeneous brain tumours that are clinically and histologically similar to the more common gonadal GCTs. IGCTs show great variation in their geographical and gender distribution, histological composition and treatment outcomes. The incidence of IGCTs is historically five- to eightfold greater in Japan and other East Asian countries than in Western countries, with peak incidence near the time of puberty. About half of the tumours are located in the pineal region. The male-to-female incidence ratio is approximately 3-4:1 overall, but is even higher for tumours located in the pineal region. Owing to the scarcity of tumour specimens available for research, little is currently known about this rare disease. Here we report the analysis of 62 cases by next-generation sequencing, single nucleotide polymorphism array and expression array. We find the KIT/RAS signalling pathway frequently mutated in more than 50% of IGCTs, including novel recurrent somatic mutations in KIT, its downstream mediators KRAS and NRAS, and its negative regulator CBL. Novel somatic alterations in the AKT/mTOR pathway included copy number gains of the AKT1 locus at 14q32.33 in 19% of patients, with corresponding upregulation of AKT1 expression. We identified loss-of-function mutations in BCORL1, a transcriptional co-repressor and tumour suppressor. We report significant enrichment of novel and rare germline variants in JMJD1C, which codes for a histone demethylase and is a coactivator of the androgen receptor, among Japanese IGCT patients. This study establishes a molecular foundation for understanding the biology of IGCTs and suggests potentially promising therapeutic strategies focusing on the inhibition of KIT/RAS activation and the AKT1/mTOR pathway.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4532372/" 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/PMC4532372/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Linghua -- Yamaguchi, Shigeru -- Burstein, Matthew D -- Terashima, Keita -- Chang, Kyle -- Ng, Ho-Keung -- Nakamura, Hideo -- He, Zongxiao -- Doddapaneni, Harshavardhan -- Lewis, Lora -- Wang, Mark -- Suzuki, Tomonari -- Nishikawa, Ryo -- Natsume, Atsushi -- Terasaka, Shunsuke -- Dauser, Robert -- Whitehead, William -- Adekunle, Adesina -- Sun, Jiayi -- Qiao, Yi -- Marth, Gabor -- Muzny, Donna M -- Gibbs, Richard A -- Leal, Suzanne M -- Wheeler, David A -- Lau, Ching C -- 5T15 LM07093-18/LM/NLM NIH HHS/ -- 5T15 LM07093-19/LM/NLM NIH HHS/ -- 5U54HG003273/HG/NHGRI NIH HHS/ -- U54 HG003273/HG/NHGRI NIH HHS/ -- England -- Nature. 2014 Jul 10;511(7508):241-5. doi: 10.1038/nature13296. Epub 2014 Jun 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas 77030, USA. ; Texas Children's Cancer and Hematology Centers, Baylor College of Medicine, Houston, Texas 77030, USA. ; 1] Structural and Computational Biology and Molecular Biophysics Program, Baylor College of Medicine, Houston, Texas 77030, USA [2] Medical Scientist Training Program, Baylor College of Medicine, Houston, Texas 77030, USA. ; 1] Texas Children's Cancer and Hematology Centers, Baylor College of Medicine, Houston, Texas 77030, USA [2] National Center for Child Health and Development, Tokyo, 157-8535, Japan. ; Department of Anatomical and Cellular Pathology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong. ; Department of Neurosurgery, Kumamoto University, Kumamoto, 860-0862, Japan. ; Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030, USA. ; Department of Neurosurgery, Saitama Medical University, Saitama, 350-0495, Japan. ; Department of Neurosurgery, Nagoya University, Nagoya, 466-8550, Japan. ; Department of Neurosurgery, Hokkaido University, Hokkaido Prefecture, 060-0808, Japan. ; Department of Neurosurgery, Baylor College of Medicine, Houston, Texas 77030, USA. ; Department of Pathology, Baylor College of Medicine, Houston, Texas 77030, USA. ; Medical Scientist Training Program, Baylor College of Medicine, Houston, Texas 77030, USA. ; Department of Biology, Boston College, Chestnut Hill, Maryland 02467, USA. ; 1] Texas Children's Cancer and Hematology Centers, Baylor College of Medicine, Houston, Texas 77030, USA [2] Medical Scientist Training Program, Baylor College of Medicine, Houston, Texas 77030, USA [3] Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24896186" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Brain Neoplasms/*genetics/pathology ; Child ; Female ; Germ-Line Mutation/*genetics ; Humans ; Japan ; Male ; Mutation/*genetics ; Neoplasms, Germ Cell and Embryonal/*genetics/pathology ; Oncogene Protein v-akt/genetics ; Proto-Oncogene Proteins c-kit/genetics ; Reproducibility of Results ; Signal Transduction/genetics ; TOR Serine-Threonine Kinases/genetics ; Young Adult ; ras Proteins/genetics
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  • 89
    facet.materialart.
    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2014-06-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉England -- Nature. 2014 Jun 5;510(7503):8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24910867" target="_blank"〉PubMed〈/a〉
    Keywords: *Awards and Prizes ; China ; Diffusion of Innovation ; Ireland ; *Mentors ; *Periodicals as Topic ; Reproducibility of Results ; Research/*standards ; Research Personnel/*ethics/*standards ; Truth Disclosure/ethics
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  • 90
    Publication Date: 2014-02-28
    Description: Epistasis is the phenomenon whereby one polymorphism's effect on a trait depends on other polymorphisms present in the genome. The extent to which epistasis influences complex traits and contributes to their variation is a fundamental question in evolution and human genetics. Although often demonstrated in artificial gene manipulation studies in model organisms, and some examples have been reported in other species, few examples exist for epistasis among natural polymorphisms in human traits. Its absence from empirical findings may simply be due to low incidence in the genetic control of complex traits, but an alternative view is that it has previously been too technically challenging to detect owing to statistical and computational issues. Here we show, using advanced computation and a gene expression study design, that many instances of epistasis are found between common single nucleotide polymorphisms (SNPs). In a cohort of 846 individuals with 7,339 gene expression levels measured in peripheral blood, we found 501 significant pairwise interactions between common SNPs influencing the expression of 238 genes (P 〈 2.91 x 10(-16)). Replication of these interactions in two independent data sets showed both concordance of direction of epistatic effects (P = 5.56 x 10(-31)) and enrichment of interaction P values, with 30 being significant at a conservative threshold of P 〈 9.98 x 10(-5). Forty-four of the genetic interactions are located within 5 megabases of regions of known physical chromosome interactions (P = 1.8 x 10(-10)). Epistatic networks of three SNPs or more influence the expression levels of 129 genes, whereby one cis-acting SNP is modulated by several trans-acting SNPs. For example, MBNL1 is influenced by an additive effect at rs13069559, which itself is masked by trans-SNPs on 14 different chromosomes, with nearly identical genotype-phenotype maps for each cis-trans interaction. This study presents the first evidence, to our knowledge, for many instances of segregating common polymorphisms interacting to influence human traits.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3984375/" 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/PMC3984375/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hemani, Gibran -- Shakhbazov, Konstantin -- Westra, Harm-Jan -- Esko, Tonu -- Henders, Anjali K -- McRae, Allan F -- Yang, Jian -- Gibson, Greg -- Martin, Nicholas G -- Metspalu, Andres -- Franke, Lude -- Montgomery, Grant W -- Visscher, Peter M -- Powell, Joseph E -- AA014041/AA/NIAAA NIH HHS/ -- AA07535/AA/NIAAA NIH HHS/ -- AA10248/AA/NIAAA NIH HHS/ -- AA13320/AA/NIAAA NIH HHS/ -- AA13321/AA/NIAAA NIH HHS/ -- AA13326/AA/NIAAA NIH HHS/ -- DA12854/DA/NIDA NIH HHS/ -- GM057091/GM/NIGMS NIH HHS/ -- GM099568/GM/NIGMS NIH HHS/ -- P01 GM099568/GM/NIGMS NIH HHS/ -- R01 GM075091/GM/NIGMS NIH HHS/ -- England -- Nature. 2014 Apr 10;508(7495):249-53. doi: 10.1038/nature13005. Epub 2014 Feb 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Queensland Brain Institute, University of Queensland, Brisbane, Queensland 4072, Australia [2] University of Queensland Diamantina Institute, University of Queensland, Princess Alexandra Hospital, Brisbane, Queensland 4072, Australia. ; Department of Genetics, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands. ; 1] Estonian Genome Center, University of Tartu, Tartu 51010, Estonia [2] Medical and Population Genetics, Broad Institute, Cambridge, Massachusetts 02142, USA [3] Divisions of Endocrinology, Children's Hospital, Boston, Massachusetts 02115, USA. ; Queensland Institute of Medical Research, Brisbane, Queensland 4006, Australia. ; Queensland Brain Institute, University of Queensland, Brisbane, Queensland 4072, Australia. ; School of Biology and Centre for Integrative Genomics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA. ; Estonian Genome Center, University of Tartu, Tartu 51010, Estonia. ; 1] Queensland Institute of Medical Research, Brisbane, Queensland 4006, Australia [2]. ; 1] Queensland Brain Institute, University of Queensland, Brisbane, Queensland 4072, Australia [2] University of Queensland Diamantina Institute, University of Queensland, Princess Alexandra Hospital, Brisbane, Queensland 4072, Australia [3].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24572353" target="_blank"〉PubMed〈/a〉
    Keywords: Cohort Studies ; Epistasis, Genetic/*genetics ; Europe/ethnology ; Female ; Gene Expression Profiling ; Gene Expression Regulation/*genetics ; Genetic Association Studies ; Humans ; Linkage Disequilibrium ; Male ; Pedigree ; Polymorphism, Single Nucleotide/genetics ; Quantitative Trait Loci ; Reproducibility of Results ; Transcription, Genetic/*genetics
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  • 91
    Publication Date: 2014-04-25
    Description: The skin has a dual function as a barrier and a sensory interface between the body and the environment. To protect against invading pathogens, the skin harbours specialized immune cells, including dermal dendritic cells (DDCs) and interleukin (IL)-17-producing gammadelta T (gammadeltaT17) cells, the aberrant activation of which by IL-23 can provoke psoriasis-like inflammation. The skin is also innervated by a meshwork of peripheral nerves consisting of relatively sparse autonomic and abundant sensory fibres. Interactions between the autonomic nervous system and immune cells in lymphoid organs are known to contribute to systemic immunity, but how peripheral nerves regulate cutaneous immune responses remains unclear. We exposed the skin of mice to imiquimod, which induces IL-23-dependent psoriasis-like inflammation. Here we show that a subset of sensory neurons expressing the ion channels TRPV1 and Nav1.8 is essential to drive this inflammatory response. Imaging of intact skin revealed that a large fraction of DDCs, the principal source of IL-23, is in close contact with these nociceptors. Upon selective pharmacological or genetic ablation of nociceptors, DDCs failed to produce IL-23 in imiquimod-exposed skin. Consequently, the local production of IL-23-dependent inflammatory cytokines by dermal gammadeltaT17 cells and the subsequent recruitment of inflammatory cells to the skin were markedly reduced. Intradermal injection of IL-23 bypassed the requirement for nociceptor communication with DDCs and restored the inflammatory response. These findings indicate that TRPV1(+)Nav1.8(+) nociceptors, by interacting with DDCs, regulate the IL-23/IL-17 pathway and control cutaneous immune responses.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4127885/" 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/PMC4127885/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Riol-Blanco, Lorena -- Ordovas-Montanes, Jose -- Perro, Mario -- Naval, Elena -- Thiriot, Aude -- Alvarez, David -- Paust, Silke -- Wood, John N -- von Andrian, Ulrich H -- 101054/Wellcome Trust/United Kingdom -- 5F31AR063546-02/AR/NIAMS NIH HHS/ -- AI069259/AI/NIAID NIH HHS/ -- AI078897/AI/NIAID NIH HHS/ -- AI095261/AI/NIAID NIH HHS/ -- AI111595/AI/NIAID NIH HHS/ -- F31 AR063546/AR/NIAMS NIH HHS/ -- G0901905/Medical Research Council/United Kingdom -- P01 AI078897/AI/NIAID NIH HHS/ -- P01 AI112521/AI/NIAID NIH HHS/ -- R01 AI069259/AI/NIAID NIH HHS/ -- R01 AI111595/AI/NIAID NIH HHS/ -- England -- Nature. 2014 Jun 5;510(7503):157-61. doi: 10.1038/nature13199. Epub 2014 Apr 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts 02115, USA [2]. ; Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; 1] Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts 02115, USA [2] Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030, USA. ; Institute for Biomedical Research, University College London, London WC1E 6BT, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24759321" target="_blank"〉PubMed〈/a〉
    Keywords: Aminoquinolines ; Animals ; Disease Models, Animal ; Female ; Inflammation/chemically induced/immunology/pathology ; Interleukin-17/biosynthesis/immunology ; Interleukin-23/biosynthesis/*immunology ; Interleukins/biosynthesis/immunology ; Langerhans Cells/immunology/metabolism ; Lymph Nodes/immunology/pathology ; Male ; Mice ; Mice, Inbred C57BL ; NAV1.8 Voltage-Gated Sodium Channel/metabolism ; Nociceptors/drug effects/*metabolism ; Psoriasis/chemically induced/*immunology/*pathology ; Sensory Receptor Cells/drug effects/*metabolism ; Skin/cytology/immunology/*innervation/*pathology ; T-Lymphocytes/immunology/metabolism ; TRPV Cation Channels/metabolism
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  • 92
    Publication Date: 2014-08-01
    Description: Haematopoiesis is a developmental cascade that generates all blood cell lineages in health and disease. This process relies on quiescent haematopoietic stem cells capable of differentiating, self renewing and expanding upon physiological demand. However, the mechanisms that regulate haematopoietic stem cell homeostasis and function remain largely unknown. Here we show that the neurotrophic factor receptor RET (rearranged during transfection) drives haematopoietic stem cell survival, expansion and function. We find that haematopoietic stem cells express RET and that its neurotrophic factor partners are produced in the haematopoietic stem cell environment. Ablation of Ret leads to impaired survival and reduced numbers of haematopoietic stem cells with normal differentiation potential, but loss of cell-autonomous stress response and reconstitution potential. Strikingly, RET signals provide haematopoietic stem cells with critical Bcl2 and Bcl2l1 surviving cues, downstream of p38 mitogen-activated protein (MAP) kinase and cyclic-AMP-response element binding protein (CREB) activation. Accordingly, enforced expression of RET downstream targets, Bcl2 or Bcl2l1, is sufficient to restore the activity of Ret null progenitors in vivo. Activation of RET results in improved haematopoietic stem cell survival, expansion and in vivo transplantation efficiency. Remarkably, human cord-blood progenitor expansion and transplantation is also improved by neurotrophic factors, opening the way for exploration of RET agonists in human haematopoietic stem cell transplantation. Our work shows that neurotrophic factors are novel components of the haematopoietic stem cell microenvironment, revealing that haematopoietic stem cells and neurons are regulated by similar signals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fonseca-Pereira, Diogo -- Arroz-Madeira, Silvia -- Rodrigues-Campos, Mariana -- Barbosa, Ines A M -- Domingues, Rita G -- Bento, Teresa -- Almeida, Afonso R M -- Ribeiro, Helder -- Potocnik, Alexandre J -- Enomoto, Hideki -- Veiga-Fernandes, Henrique -- England -- Nature. 2014 Oct 2;514(7520):98-101. doi: 10.1038/nature13498. Epub 2014 Jul 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Avenida Professor Egas Moniz, Edificio Egas Moniz, 1649-028 Lisboa, Portugal [2]. ; Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Avenida Professor Egas Moniz, Edificio Egas Moniz, 1649-028 Lisboa, Portugal. ; 1] Division of Molecular Immunology, MRC National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, UK [2] Institute of Immunology and Infection Research, University of Edinburgh, West Mains Road, Edinburgh EH9 3JT, UK. ; 1] Laboratory for Neuronal Differentiation and Regeneration, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan [2] Graduate School of Medicine, Kobe University7-5-1 Kusunoki-cho, Chuo-ku, Kobe City, Hyogo 650-0017, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25079320" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Survival ; Cyclic AMP Response Element-Binding Protein/metabolism ; Enzyme Activation ; Female ; Hematopoiesis ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/*cytology/*metabolism ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Nerve Growth Factors/*metabolism ; Proto-Oncogene Proteins c-bcl-2/metabolism ; Proto-Oncogene Proteins c-ret/deficiency/genetics/*metabolism ; Signal Transduction ; Stem Cell Niche ; bcl-X Protein/metabolism ; p38 Mitogen-Activated Protein Kinases/metabolism
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  • 93
    Publication Date: 2014-10-14
    Description: Alzheimer's disease is the most common form of dementia, characterized by two pathological hallmarks: amyloid-beta plaques and neurofibrillary tangles. The amyloid hypothesis of Alzheimer's disease posits that the excessive accumulation of amyloid-beta peptide leads to neurofibrillary tangles composed of aggregated hyperphosphorylated tau. However, to date, no single disease model has serially linked these two pathological events using human neuronal cells. Mouse models with familial Alzheimer's disease (FAD) mutations exhibit amyloid-beta-induced synaptic and memory deficits but they do not fully recapitulate other key pathological events of Alzheimer's disease, including distinct neurofibrillary tangle pathology. Human neurons derived from Alzheimer's disease patients have shown elevated levels of toxic amyloid-beta species and phosphorylated tau but did not demonstrate amyloid-beta plaques or neurofibrillary tangles. Here we report that FAD mutations in beta-amyloid precursor protein and presenilin 1 are able to induce robust extracellular deposition of amyloid-beta, including amyloid-beta plaques, in a human neural stem-cell-derived three-dimensional (3D) culture system. More importantly, the 3D-differentiated neuronal cells expressing FAD mutations exhibited high levels of detergent-resistant, silver-positive aggregates of phosphorylated tau in the soma and neurites, as well as filamentous tau, as detected by immunoelectron microscopy. Inhibition of amyloid-beta generation with beta- or gamma-secretase inhibitors not only decreased amyloid-beta pathology, but also attenuated tauopathy. We also found that glycogen synthase kinase 3 (GSK3) regulated amyloid-beta-mediated tau phosphorylation. We have successfully recapitulated amyloid-beta and tau pathology in a single 3D human neural cell culture system. Our unique strategy for recapitulating Alzheimer's disease pathology in a 3D neural cell culture model should also serve to facilitate the development of more precise human neural cell models of other neurodegenerative disorders.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4366007/" 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/PMC4366007/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Choi, Se Hoon -- Kim, Young Hye -- Hebisch, Matthias -- Sliwinski, Christopher -- Lee, Seungkyu -- D'Avanzo, Carla -- Chen, Hechao -- Hooli, Basavaraj -- Asselin, Caroline -- Muffat, Julien -- Klee, Justin B -- Zhang, Can -- Wainger, Brian J -- Peitz, Michael -- Kovacs, Dora M -- Woolf, Clifford J -- Wagner, Steven L -- Tanzi, Rudolph E -- Kim, Doo Yeon -- 5P01AG15379/AG/NIA NIH HHS/ -- 5R37MH060009/MH/NIMH NIH HHS/ -- P01 AG004953/AG/NIA NIH HHS/ -- P01 AG015379/AG/NIA NIH HHS/ -- P30 HD018655/HD/NICHD NIH HHS/ -- P30 NS045776/NS/NINDS NIH HHS/ -- P50 AG005134/AG/NIA NIH HHS/ -- R01 AG014713/AG/NIA NIH HHS/ -- R01 NS045860/NS/NINDS NIH HHS/ -- R21 AG031483/AG/NIA NIH HHS/ -- RF1 AG048080/AG/NIA NIH HHS/ -- England -- Nature. 2014 Nov 13;515(7526):274-8. doi: 10.1038/nature13800. Epub 2014 Oct 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Genetics and Aging Research Unit, MassGeneral Institute for Neurodegenerative Disease, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, USA [2]. ; 1] Genetics and Aging Research Unit, MassGeneral Institute for Neurodegenerative Disease, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, USA [2] Division of Mass Spectrometry Research, Korea Basic Science Institute, Cheongju-si, Chungbuk 363-883, South Korea [3]. ; 1] Genetics and Aging Research Unit, MassGeneral Institute for Neurodegenerative Disease, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, USA [2] Institute of Reconstructive Neurobiology, Life and Brain Center, University of Bonn and Hertie Foundation, 53127 Bonn, Germany. ; Genetics and Aging Research Unit, MassGeneral Institute for Neurodegenerative Disease, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, USA. ; FM Kirby Neurobiology Center, Boston Children's Hospital and Harvard Stem Cell Institute, Boston, Massachusetts 02115, USA. ; The Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142, USA. ; Institute of Reconstructive Neurobiology, Life and Brain Center, University of Bonn and Hertie Foundation, 53127 Bonn, Germany. ; Department of Neurosciences, University of California, San Diego, La Jolla, California 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25307057" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/genetics/*metabolism/*pathology ; Amyloid beta-Peptides/chemistry/genetics/metabolism ; Cell Culture Techniques/*methods ; Cell Differentiation ; Drug Evaluation, Preclinical/methods ; Extracellular Space/metabolism ; Glycogen Synthase Kinase 3/metabolism ; Humans ; Microtubule-Associated Proteins/metabolism ; *Models, Biological ; Neural Stem Cells/*metabolism/pathology ; Neurites/metabolism ; Phosphorylation ; Presenilin-1/metabolism ; Protein Aggregation, Pathological ; Reproducibility of Results ; tau Proteins/chemistry/metabolism
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  • 94
    Publication Date: 2014-10-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laland, Kevin -- Uller, Tobias -- Feldman, Marc -- Sterelny, Kim -- Muller, Gerd B -- Moczek, Armin -- Jablonka, Eva -- Odling-Smee, John -- Wray, Gregory A -- Hoekstra, Hopi E -- Futuyma, Douglas J -- Lenski, Richard E -- Mackay, Trudy F C -- Schluter, Dolph -- Strassmann, Joan E -- England -- Nature. 2014 Oct 9;514(7521):161-4. doi: 10.1038/514161a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25297418" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological/genetics ; Animals ; *Biological Evolution ; *Developmental Biology/trends ; Ecosystem ; Epigenesis, Genetic ; *Gene-Environment Interaction ; Genetic Speciation ; *Models, Biological ; Models, Genetic ; Phenotype ; Reproducibility of Results ; Selection, Genetic
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  • 95
    Publication Date: 2014-02-18
    Description: In cancer patients, visual identification of sentinel lymph nodes (LNs) is achieved by the injection of dyes that bind avidly to endogenous albumin, targeting these compounds to LNs, where they are efficiently filtered by resident phagocytes. Here we translate this 'albumin hitchhiking' approach to molecular vaccines, through the synthesis of amphiphiles (amph-vaccines) comprising an antigen or adjuvant cargo linked to a lipophilic albumin-binding tail by a solubility-promoting polar polymer chain. Administration of structurally optimized CpG-DNA/peptide amph-vaccines in mice resulted in marked increases in LN accumulation and decreased systemic dissemination relative to their parent compounds, leading to 30-fold increases in T-cell priming and enhanced anti-tumour efficacy while greatly reducing systemic toxicity. Amph-vaccines provide a simple, broadly applicable strategy to simultaneously increase the potency and safety of subunit vaccines.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4069155/" 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/PMC4069155/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Haipeng -- Moynihan, Kelly D -- Zheng, Yiran -- Szeto, Gregory L -- Li, Adrienne V -- Huang, Bonnie -- Van Egeren, Debra S -- Park, Clara -- Irvine, Darrell J -- AI091693/AI/NIAID NIH HHS/ -- AI095109/AI/NIAID NIH HHS/ -- AI104715/AI/NIAID NIH HHS/ -- F32 CA180586/CA/NCI NIH HHS/ -- P01 AI104715/AI/NIAID NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- R01 AI095109/AI/NIAID NIH HHS/ -- U19 AI091693/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Mar 27;507(7493):519-22. doi: 10.1038/nature12978. Epub 2014 Feb 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [3] Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [3] Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [4] Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard, Cambridge, Massachusetts 02139, USA [5] 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/24531764" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; CpG Islands/genetics/immunology ; Female ; Lymph Nodes/*immunology ; Mice ; Mice, Inbred C57BL ; T-Lymphocytes/immunology ; Vaccines, Subunit/genetics/*immunology ; Vaccines, Synthetic/genetics/*immunology
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  • 96
    Publication Date: 2014-03-05
    Description: Characterization of how the microenvironment, or niche, regulates stem cell activity is central to understanding stem cell biology and to developing strategies for the therapeutic manipulation of stem cells. Low oxygen tension (hypoxia) is commonly thought to be a shared niche characteristic in maintaining quiescence in multiple stem cell types. However, support for the existence of a hypoxic niche has largely come from indirect evidence such as proteomic analysis, expression of hypoxia inducible factor-1alpha (Hif-1alpha) and related genes, and staining with surrogate hypoxic markers (for example, pimonidazole). Here we perform direct in vivo measurements of local oxygen tension (pO2) in the bone marrow of live mice. Using two-photon phosphorescence lifetime microscopy, we determined the absolute pO2 of the bone marrow to be quite low (〈32 mm Hg) despite very high vascular density. We further uncovered heterogeneities in local pO2, with the lowest pO2 ( approximately 9.9 mm Hg, or 1.3%) found in deeper peri-sinusoidal regions. The endosteal region, by contrast, is less hypoxic as it is perfused with small arteries that are often positive for the marker nestin. These pO2 values change markedly after radiation and chemotherapy, pointing to the role of stress in altering the stem cell metabolic microenvironment.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3984353/" 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/PMC3984353/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spencer, Joel A -- Ferraro, Francesca -- Roussakis, Emmanuel -- Klein, Alyssa -- Wu, Juwell -- Runnels, Judith M -- Zaher, Walid -- Mortensen, Luke J -- Alt, Clemens -- Turcotte, Raphael -- Yusuf, Rushdia -- Cote, Daniel -- Vinogradov, Sergei A -- Scadden, David T -- Lin, Charles P -- EB017274/EB/NIBIB NIH HHS/ -- HL096372/HL/NHLBI NIH HHS/ -- HL097748/HL/NHLBI NIH HHS/ -- HL097794/HL/NHLBI NIH HHS/ -- R01 EB014703/EB/NIBIB NIH HHS/ -- R01 EB017274/EB/NIBIB NIH HHS/ -- R01 HL097748/HL/NHLBI NIH HHS/ -- R01 HL097794/HL/NHLBI NIH HHS/ -- R03 HL096372/HL/NHLBI NIH HHS/ -- U01 HL100402/HL/NHLBI NIH HHS/ -- England -- Nature. 2014 Apr 10;508(7495):269-73. doi: 10.1038/nature13034. Epub 2014 Mar 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [2] Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [3] Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA. ; 1] Center for Regenerative Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [2] Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA [3] Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; 1] Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [2] Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [2] Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA. ; 1] Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [2] Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [3] Stem Cell Unit, Department of Anatomy, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia. ; 1] Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [2] Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [3] Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, USA. ; Departement de Physique, Genie Physique et Optique and Centre de Recherche de l'Institut Universitaire en Sante Mentale de Quebec, Universite Laval, Quebec City, Quebec G1J 2G3, Canada. ; Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [2] Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA [3] Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24590072" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anoxia/diagnosis/metabolism ; Arteries/metabolism ; Bone Marrow/blood supply/drug effects/*metabolism/radiation effects ; Busulfan/pharmacology ; Cell Hypoxia ; Hematopoietic Stem Cells/cytology/metabolism ; Luminescent Measurements ; Male ; Mice ; Mice, Inbred C57BL ; Microscopy ; Nestin/metabolism ; Oxygen/*analysis/metabolism ; Photons ; Stem Cell Niche/drug effects/radiation effects
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  • 97
    Publication Date: 2014-11-28
    Description: Human tumours typically harbour a remarkable number of somatic mutations. If presented on major histocompatibility complex class I molecules (MHCI), peptides containing these mutations could potentially be immunogenic as they should be recognized as 'non-self' neo-antigens by the adaptive immune system. Recent work has confirmed that mutant peptides can serve as T-cell epitopes. However, few mutant epitopes have been described because their discovery required the laborious screening of patient tumour-infiltrating lymphocytes for their ability to recognize antigen libraries constructed following tumour exome sequencing. We sought to simplify the discovery of immunogenic mutant peptides by characterizing their general properties. We developed an approach that combines whole-exome and transcriptome sequencing analysis with mass spectrometry to identify neo-epitopes in two widely used murine tumour models. Of the 〉1,300 amino acid changes identified, approximately 13% were predicted to bind MHCI, a small fraction of which were confirmed by mass spectrometry. The peptides were then structurally modelled bound to MHCI. Mutations that were solvent-exposed and therefore accessible to T-cell antigen receptors were predicted to be immunogenic. Vaccination of mice confirmed the approach, with each predicted immunogenic peptide yielding therapeutically active T-cell responses. The predictions also enabled the generation of peptide-MHCI dextramers that could be used to monitor the kinetics and distribution of the anti-tumour T-cell response before and after vaccination. These findings indicate that a suitable prediction algorithm may provide an approach for the pharmacodynamic monitoring of T-cell responses as well as for the development of personalized vaccines in cancer patients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yadav, Mahesh -- Jhunjhunwala, Suchit -- Phung, Qui T -- Lupardus, Patrick -- Tanguay, Joshua -- Bumbaca, Stephanie -- Franci, Christian -- Cheung, Tommy K -- Fritsche, Jens -- Weinschenk, Toni -- Modrusan, Zora -- Mellman, Ira -- Lill, Jennie R -- Delamarre, Lelia -- England -- Nature. 2014 Nov 27;515(7528):572-6. doi: 10.1038/nature14001.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genentech, South San Francisco, California 94080, USA. ; Immatics Biotechnologies GmbH, 72076 Tubingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25428506" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD8-Positive T-Lymphocytes/immunology ; Cancer Vaccines/immunology ; Cell Line, Tumor ; Exome/*genetics ; Female ; Gene Expression Profiling ; Immunity, Cellular/immunology ; Immunogenetic Phenomena/*genetics ; Immunoprecipitation ; *Mass Spectrometry ; Mice ; Mice, Inbred C57BL ; Models, Molecular ; *Mutation ; Neoplasms/*genetics/immunology ; Peptides/genetics ; Protein Structure, Tertiary
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  • 98
    Publication Date: 2014-05-30
    Description: A unique property of many adult stem cells is their ability to exist in a non-cycling, quiescent state. Although quiescence serves an essential role in preserving stem cell function until the stem cell is needed in tissue homeostasis or repair, defects in quiescence can lead to an impairment in tissue function. The extent to which stem cells can regulate quiescence is unknown. Here we show that the stem cell quiescent state is composed of two distinct functional phases, G0 and an 'alert' phase we term G(Alert). Stem cells actively and reversibly transition between these phases in response to injury-induced systemic signals. Using genetic mouse models specific to muscle stem cells (or satellite cells), we show that mTORC1 activity is necessary and sufficient for the transition of satellite cells from G0 into G(Alert) and that signalling through the HGF receptor cMet is also necessary. We also identify G0-to-G(Alert) transitions in several populations of quiescent stem cells. Quiescent stem cells that transition into G(Alert) possess enhanced tissue regenerative function. We propose that the transition of quiescent stem cells into G(Alert) functions as an 'alerting' mechanism, an adaptive response that positions stem cells to respond rapidly under conditions of injury and stress, priming them for cell cycle entry.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4065227/" 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/PMC4065227/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rodgers, Joseph T -- King, Katherine Y -- Brett, Jamie O -- Cromie, Melinda J -- Charville, Gregory W -- Maguire, Katie K -- Brunson, Christopher -- Mastey, Namrata -- Liu, Ling -- Tsai, Chang-Ru -- Goodell, Margaret A -- Rando, Thomas A -- F30 AG035521/AG/NIA NIH HHS/ -- I01 BX002324/BX/BLRD VA/ -- K08 HL098898/HL/NHLBI NIH HHS/ -- P01 AG036695/AG/NIA NIH HHS/ -- R01 AG023806/AG/NIA NIH HHS/ -- R01 AG047820/AG/NIA NIH HHS/ -- R01 AG23806/AG/NIA NIH HHS/ -- R01 AR062185/AR/NIAMS NIH HHS/ -- R01 DK092883/DK/NIDDK NIH HHS/ -- R37 AG023806/AG/NIA NIH HHS/ -- England -- Nature. 2014 Jun 19;510(7505):393-6. doi: 10.1038/nature13255. Epub 2014 May 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, California 94305, USA [2] Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Pediatrics and Program in Developmental Biology, Baylor College of Medicine, Houston, Texas 77030, USA. ; 1] Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, California 94305, USA [2] Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, California 94305, USA [3] Neurology Service and Rehabilitation Research and Development Center of Excellence, Veterans Affairs Palo Alto Health Care System, Palo Alto, California 94304, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24870234" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle/genetics/*physiology ; Cells, Cultured ; G0 Phase/genetics/*physiology ; Gene Expression Profiling ; Gene Expression Regulation ; Male ; Mice ; Mice, Inbred C57BL ; Multiprotein Complexes/genetics/*metabolism ; Muscle, Skeletal/*cytology/injuries/metabolism ; Regeneration/physiology ; Satellite Cells, Skeletal Muscle/*cytology/metabolism ; TOR Serine-Threonine Kinases/genetics/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 99
    Publication Date: 2014-09-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baell, Jonathan -- Walters, Michael A -- England -- Nature. 2014 Sep 25;513(7519):481-3. doi: 10.1038/513481a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25254460" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Artifacts ; Binding Sites ; Drug Discovery/methods/*standards ; Humans ; Pharmacology/methods/*standards ; Protein Binding ; Reproducibility of Results ; Research Personnel/standards
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  • 100
    Publication Date: 2014-04-04
    Description: Comprehensive knowledge of the brain's wiring diagram is fundamental for understanding how the nervous system processes information at both local and global scales. However, with the singular exception of the C. elegans microscale connectome, there are no complete connectivity data sets in other species. Here we report a brain-wide, cellular-level, mesoscale connectome for the mouse. The Allen Mouse Brain Connectivity Atlas uses enhanced green fluorescent protein (EGFP)-expressing adeno-associated viral vectors to trace axonal projections from defined regions and cell types, and high-throughput serial two-photon tomography to image the EGFP-labelled axons throughout the brain. This systematic and standardized approach allows spatial registration of individual experiments into a common three dimensional (3D) reference space, resulting in a whole-brain connectivity matrix. A computational model yields insights into connectional strength distribution, symmetry and other network properties. Virtual tractography illustrates 3D topography among interconnected regions. Cortico-thalamic pathway analysis demonstrates segregation and integration of parallel pathways. The Allen Mouse Brain Connectivity Atlas is a freely available, foundational resource for structural and functional investigations into the neural circuits that support behavioural and cognitive processes in health and disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oh, Seung Wook -- Harris, Julie A -- Ng, Lydia -- Winslow, Brent -- Cain, Nicholas -- Mihalas, Stefan -- Wang, Quanxin -- Lau, Chris -- Kuan, Leonard -- Henry, Alex M -- Mortrud, Marty T -- Ouellette, Benjamin -- Nguyen, Thuc Nghi -- Sorensen, Staci A -- Slaughterbeck, Clifford R -- Wakeman, Wayne -- Li, Yang -- Feng, David -- Ho, Anh -- Nicholas, Eric -- Hirokawa, Karla E -- Bohn, Phillip -- Joines, Kevin M -- Peng, Hanchuan -- Hawrylycz, Michael J -- Phillips, John W -- Hohmann, John G -- Wohnoutka, Paul -- Gerfen, Charles R -- Koch, Christof -- Bernard, Amy -- Dang, Chinh -- Jones, Allan R -- Zeng, Hongkui -- England -- Nature. 2014 Apr 10;508(7495):207-14. doi: 10.1038/nature13186. Epub 2014 Apr 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Allen Institute for Brain Science, Seattle, Washington 98103, USA [2]. ; Allen Institute for Brain Science, Seattle, Washington 98103, USA. ; Laboratory of Systems Neuroscience, National Institute of Mental Health, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24695228" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atlases as Topic ; Axons/physiology ; Brain/*anatomy & histology/*cytology ; Cerebral Cortex/cytology ; *Connectome ; Corpus Striatum/cytology ; Male ; Mice ; Mice, Inbred C57BL ; Models, Neurological ; Neuroanatomical Tract-Tracing Techniques ; Thalamus/cytology
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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