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  • 101
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    Nature Publishing Group (NPG)
    Publication Date: 2015-09-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sohn, Emily -- England -- Nature. 2015 Sep 24;525(7570):S12-3. doi: 10.1038/525S12a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26398732" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biomedical Research ; Cannabidiol/administration & dosage/analogs & derivatives/therapeutic use ; *Cannabis ; Child ; Clinical Trials, Phase II as Topic/legislation & jurisprudence ; Craniocerebral Trauma/drug therapy ; Crohn Disease/drug therapy ; Drug Industry/organization & administration ; Female ; Humans ; Israel ; Medical Marijuana/administration & dosage/therapeutic use ; Mice ; Stress Disorders, Post-Traumatic/drug therapy
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 102
    Publication Date: 2015-03-13
    Description: After stimulation, dendritic cells (DCs) mature and migrate to draining lymph nodes to induce immune responses. As such, autologous DCs generated ex vivo have been pulsed with tumour antigens and injected back into patients as immunotherapy. While DC vaccines have shown limited promise in the treatment of patients with advanced cancers including glioblastoma, the factors dictating DC vaccine efficacy remain poorly understood. Here we show that pre-conditioning the vaccine site with a potent recall antigen such as tetanus/diphtheria (Td) toxoid can significantly improve the lymph node homing and efficacy of tumour-antigen-specific DCs. To assess the effect of vaccine site pre-conditioning in humans, we randomized patients with glioblastoma to pre-conditioning with either mature DCs or Td unilaterally before bilateral vaccination with DCs pulsed with Cytomegalovirus phosphoprotein 65 (pp65) RNA. We and other laboratories have shown that pp65 is expressed in more than 90% of glioblastoma specimens but not in surrounding normal brain, providing an unparalleled opportunity to subvert this viral protein as a tumour-specific target. Patients given Td had enhanced DC migration bilaterally and significantly improved survival. In mice, Td pre-conditioning also enhanced bilateral DC migration and suppressed tumour growth in a manner dependent on the chemokine CCL3. Our clinical studies and corroborating investigations in mice suggest that pre-conditioning with a potent recall antigen may represent a viable strategy to improve anti-tumour immunotherapy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4510871/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4510871/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mitchell, Duane A -- Batich, Kristen A -- Gunn, Michael D -- Huang, Min-Nung -- Sanchez-Perez, Luis -- Nair, Smita K -- Congdon, Kendra L -- Reap, Elizabeth A -- Archer, Gary E -- Desjardins, Annick -- Friedman, Allan H -- Friedman, Henry S -- Herndon, James E 2nd -- Coan, April -- McLendon, Roger E -- Reardon, David A -- Vredenburgh, James J -- Bigner, Darell D -- Sampson, John H -- 1UL2 RR024128-01/RR/NCRR NIH HHS/ -- P01 CA154291/CA/NCI NIH HHS/ -- P01-CA154291-01A1/CA/NCI NIH HHS/ -- P50 CA108786/CA/NCI NIH HHS/ -- P50 NS020023/NS/NINDS NIH HHS/ -- P50-CA108786/CA/NCI NIH HHS/ -- P50-NS20023/NS/NINDS NIH HHS/ -- R01 CA134844/CA/NCI NIH HHS/ -- R01 CA177476/CA/NCI NIH HHS/ -- R01 NS067037/NS/NINDS NIH HHS/ -- R01-CA134844/CA/NCI NIH HHS/ -- R01-CA177476-01/CA/NCI NIH HHS/ -- R01-NS067037/NS/NINDS NIH HHS/ -- T32 AI052077/AI/NIAID NIH HHS/ -- T32 GM007171/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Mar 19;519(7543):366-9. doi: 10.1038/nature14320. Epub 2015 Mar 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA [3] Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Department of Immunology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; Department of Immunology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA. ; Division of Surgical Sciences, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA. ; Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; 1] Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina 27710, USA [2] Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA [3] Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA [4] Department of Immunology, Duke University Medical Center, Durham, North Carolina 27710, USA [5] Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25762141" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Neoplasm/immunology ; CD4-Positive T-Lymphocytes/drug effects/immunology ; Cancer Vaccines/administration & dosage/*immunology/therapeutic use ; Cell Movement/drug effects ; Chemokine CCL3/*immunology ; Dendritic Cells/cytology/*drug effects/immunology ; Female ; Glioblastoma/drug therapy/*immunology/pathology/*therapy ; Humans ; Immunotherapy/methods ; Lymph Nodes/cytology/drug effects/immunology ; Mice ; Mice, Inbred C57BL ; Phosphoproteins/chemistry/genetics/immunology ; Substrate Specificity ; Survival Rate ; Tetanus Toxoid/*administration & dosage/*pharmacology/therapeutic use ; Treatment Outcome ; Viral Matrix Proteins/chemistry/genetics/immunology
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 103
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    Nature Publishing Group (NPG)
    Publication Date: 2015-11-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baker, Monya -- England -- Nature. 2015 Nov 26;527(7579):545-51. doi: 10.1038/527545a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Nature in San Francisco, California.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26607547" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/*immunology ; Antibody Specificity/*immunology ; Cross Reactions/immunology ; Humans ; Immunoassay/*methods/*standards ; Indicators and Reagents/standards ; International Cooperation ; Mice ; National Institutes of Health (U.S.) ; Neuroanatomy/methods/standards ; Periodicals as Topic ; Reproducibility of Results ; United States
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 104
    Publication Date: 2015-03-25
    Description: Visualizing the physical basis for molecular behaviour inside living cells is a great challenge for biology. RNAs are central to biological regulation, and the ability of RNA to adopt specific structures intimately controls every step of the gene expression program. However, our understanding of physiological RNA structures is limited; current in vivo RNA structure profiles include only two of the four nucleotides that make up RNA. Here we present a novel biochemical approach, in vivo click selective 2'-hydroxyl acylation and profiling experiment (icSHAPE), which enables the first global view, to our knowledge, of RNA secondary structures in living cells for all four bases. icSHAPE of the mouse embryonic stem cell transcriptome versus purified RNA folded in vitro shows that the structural dynamics of RNA in the cellular environment distinguish different classes of RNAs and regulatory elements. Structural signatures at translational start sites and ribosome pause sites are conserved from in vitro conditions, suggesting that these RNA elements are programmed by sequence. In contrast, focal structural rearrangements in vivo reveal precise interfaces of RNA with RNA-binding proteins or RNA-modification sites that are consistent with atomic-resolution structural data. Such dynamic structural footprints enable accurate prediction of RNA-protein interactions and N(6)-methyladenosine (m(6)A) modification genome wide. These results open the door for structural genomics of RNA in living cells and reveal key physiological structures controlling gene expression.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376618/" 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/PMC4376618/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spitale, Robert C -- Flynn, Ryan A -- Zhang, Qiangfeng Cliff -- Crisalli, Pete -- Lee, Byron -- Jung, Jong-Wha -- Kuchelmeister, Hannes Y -- Batista, Pedro J -- Torre, Eduardo A -- Kool, Eric T -- Chang, Howard Y -- F30 CA189514/CA/NCI NIH HHS/ -- F30CA189514/CA/NCI NIH HHS/ -- P50 HG007735/HG/NHGRI NIH HHS/ -- P50HG007735/HG/NHGRI NIH HHS/ -- R01 HG004361/HG/NHGRI NIH HHS/ -- R01HG004361/HG/NHGRI NIH HHS/ -- T32 CA009302/CA/NCI NIH HHS/ -- T32AR007422/AR/NIAMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Mar 26;519(7544):486-90. doi: 10.1038/nature14263. Epub 2015 Mar 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Chemistry, Stanford University, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25799993" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Adenosine/analogs & derivatives ; Animals ; Binding Sites ; Cell Survival ; Click Chemistry ; Computational Biology ; Embryonic Stem Cells/cytology/metabolism ; *Gene Expression Regulation/genetics ; Genome/genetics ; Mice ; Models, Molecular ; *Nucleic Acid Conformation ; Protein Biosynthesis/genetics ; RNA/*chemistry/classification/*genetics/metabolism ; RNA-Binding Proteins/metabolism ; Regulatory Sequences, Ribonucleic Acid/genetics ; Ribosomes/metabolism ; Transcriptome/genetics
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 105
    Publication Date: 2015-05-15
    Description: Melanoma treatment is being revolutionized by the development of effective immunotherapeutic approaches. These strategies include blockade of immune-inhibitory receptors on activated T cells; for example, using monoclonal antibodies against CTLA-4, PD-1, and PD-L1 (refs 3-5). However, only a subset of patients responds to these treatments, and data suggest that therapeutic benefit is preferentially achieved in patients with a pre-existing T-cell response against their tumour, as evidenced by a baseline CD8(+) T-cell infiltration within the tumour microenvironment. Understanding the molecular mechanisms that underlie the presence or absence of a spontaneous anti-tumour T-cell response in subsets of cases, therefore, should enable the development of therapeutic solutions for patients lacking a T-cell infiltrate. Here we identify a melanoma-cell-intrinsic oncogenic pathway that contributes to a lack of T-cell infiltration in melanoma. Molecular analysis of human metastatic melanoma samples revealed a correlation between activation of the WNT/beta-catenin signalling pathway and absence of a T-cell gene expression signature. Using autochthonous mouse melanoma models we identified the mechanism by which tumour-intrinsic active beta-catenin signalling results in T-cell exclusion and resistance to anti-PD-L1/anti-CTLA-4 monoclonal antibody therapy. Specific oncogenic signals, therefore, can mediate cancer immune evasion and resistance to immunotherapies, pointing to new candidate targets for immune potentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spranger, Stefani -- Bao, Riyue -- Gajewski, Thomas F -- England -- Nature. 2015 Jul 9;523(7559):231-5. doi: 10.1038/nature14404. Epub 2015 May 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, The University of Chicago, Chicago, Illinois 60637, USA. ; Center for Research Informatics, The University of Chicago, Chicago, Illinois 60637, USA. ; 1] Department of Pathology, The University of Chicago, Chicago, Illinois 60637, USA [2] Department of Medicine, The University of Chicago, Chicago, Illinois 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25970248" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Gene Expression Profiling ; Gene Expression Regulation, Neoplastic ; Humans ; Immunotherapy ; Melanoma/*immunology/*physiopathology ; Mice ; *Signal Transduction ; T-Lymphocytes/*immunology ; Tumor Microenvironment/*immunology ; Wnt Proteins/immunology ; beta Catenin/*immunology
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 106
    Publication Date: 2015-11-05
    Description: It is estimated that more than 170 million people are infected with hepatitis C virus (HCV) worldwide. Clinical trials have demonstrated that, for the first time in human history, the potential exists to eradicate a chronic viral disease using combination therapies that contain only direct-acting antiviral agents. HCV non-structural protein 5A (NS5A) is a multifunctional protein required for several stages of the virus replication cycle. NS5A replication complex inhibitors, exemplified by daclatasvir (DCV; also known as BMS-790052 and Daklinza), belong to the most potent class of direct-acting anti-HCV agents described so far, with in vitro activity in the picomolar (pM) to low nanomolar (nM) range. The potency observed in vitro has translated into clinical efficacy, with HCV RNA declining by ~3-4 log10 in infected patients after administration of single oral doses of DCV. Understanding the exceptional potency of DCV was a key objective of this study. Here we show that although DCV and an NS5A inhibitor analogue (Syn-395) are inactive against certain NS5A resistance variants, combinations of the pair enhance DCV potency by 〉1,000-fold, restoring activity to the pM range. This synergistic effect was validated in vivo using an HCV-infected chimaeric mouse model. The cooperative interaction of a pair of compounds suggests that NS5A protein molecules communicate with each other: one inhibitor binds to resistant NS5A, causing a conformational change that is transmitted to adjacent NS5As, resensitizing resistant NS5A so that the second inhibitor can act to restore inhibition. This unprecedented synergistic anti-HCV activity also enhances the resistance barrier of DCV, providing additional options for HCV combination therapy and new insight into the role of NS5A in the HCV replication cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sun, Jin-Hua -- O'Boyle, Donald R 2nd -- Fridell, Robert A -- Langley, David R -- Wang, Chunfu -- Roberts, Susan B -- Nower, Peter -- Johnson, Benjamin M -- Moulin, Frederic -- Nophsker, Michelle J -- Wang, Ying-Kai -- Liu, Mengping -- Rigat, Karen -- Tu, Yong -- Hewawasam, Piyasena -- Kadow, John -- Meanwell, Nicholas A -- Cockett, Mark -- Lemm, Julie A -- Kramer, Melissa -- Belema, Makonen -- Gao, Min -- England -- Nature. 2015 Nov 12;527(7577):245-8. doi: 10.1038/nature15711. Epub 2015 Nov 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Virology, Bristol-Myers Squibb Research and Development, 5 Research Parkway, Wallingford, Connecticut 06492, USA. ; Computer-Assisted Drug Design, Bristol-Myers Squibb Research and Development, 5 Research Parkway, Wallingford, Connecticut 06492, USA. ; Pharmaceutical Candidate Optimization, Bristol-Myers Squibb Research and Development, 5 Research Parkway, Wallingford, Connecticut 06492, USA. ; Leads Discovery and Optimization, Bristol-Myers Squibb Research and Development, 5 Research Parkway, Wallingford, Connecticut 06492, USA. ; Discovery Chemistry, Bristol-Myers Squibb Research and Development, 5 Research Parkway, Wallingford, Connecticut 06492, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26536115" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation/drug effects ; Animals ; Antiviral Agents/*pharmacology ; Biphenyl Compounds/*pharmacology ; Cell Line ; Drug Resistance, Viral/*drug effects ; Drug Synergism ; Drug Therapy, Combination ; Hepacivirus/*drug effects/*genetics/metabolism ; Hepatitis C/virology ; Hepatocytes/transplantation ; Humans ; Imidazoles/*pharmacology ; Mice ; Models, Molecular ; Protein Conformation/drug effects ; Protein Multimerization/drug effects ; Protein Structure, Quaternary/drug effects ; Reproducibility of Results ; Viral Nonstructural Proteins/chemistry/genetics/*metabolism ; Virus Replication/drug effects
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 107
    Publication Date: 2015-11-26
    Description: Skeletal growth relies on both biosynthetic and catabolic processes. While the role of the former is clearly established, how the latter contributes to growth-promoting pathways is less understood. Macroautophagy, hereafter referred to as autophagy, is a catabolic process that plays a fundamental part in tissue homeostasis. We investigated the role of autophagy during bone growth, which is mediated by chondrocyte rate of proliferation, hypertrophic differentiation and extracellular matrix (ECM) deposition in growth plates. Here we show that autophagy is induced in growth-plate chondrocytes during post-natal development and regulates the secretion of type II collagen (Col2), the major component of cartilage ECM. Mice lacking the autophagy related gene 7 (Atg7) in chondrocytes experience endoplasmic reticulum storage of type II procollagen (PC2) and defective formation of the Col2 fibrillary network in the ECM. Surprisingly, post-natal induction of chondrocyte autophagy is mediated by the growth factor FGF18 through FGFR4 and JNK-dependent activation of the autophagy initiation complex VPS34-beclin-1. Autophagy is completely suppressed in growth plates from Fgf18(-/-) embryos, while Fgf18(+/-) heterozygous and Fgfr4(-/-) mice fail to induce autophagy during post-natal development and show decreased Col2 levels in the growth plate. Strikingly, the Fgf18(+/-) and Fgfr4(-/-) phenotypes can be rescued in vivo by pharmacological activation of autophagy, pointing to autophagy as a novel effector of FGF signalling in bone. These data demonstrate that autophagy is a developmentally regulated process necessary for bone growth, and identify FGF signalling as a crucial regulator of autophagy in chondrocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cinque, Laura -- Forrester, Alison -- Bartolomeo, Rosa -- Svelto, Maria -- Venditti, Rossella -- Montefusco, Sandro -- Polishchuk, Elena -- Nusco, Edoardo -- Rossi, Antonio -- Medina, Diego L -- Polishchuk, Roman -- De Matteis, Maria Antonietta -- Settembre, Carmine -- England -- Nature. 2015 Dec 10;528(7581):272-5. doi: 10.1038/nature16063. Epub 2015 Nov 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy. ; Dulbecco Telethon Institute, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy. ; Medical Genetics Unit, Department of Medical and Translational Science, Federico II University, Via Pansini 5, 80131 Naples, Italy. ; Department of Molecular Medicine, Biochemistry Unit, University of Pavia, 27100 Pavia, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26595272" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autophagy/genetics/*physiology ; Bone Development/genetics/*physiology ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; Chondrocytes/cytology/metabolism ; Collagen Type II/secretion ; Embryo, Mammalian ; Extracellular Matrix/genetics ; Fibroblast Growth Factors/*genetics/metabolism ; Growth Plate/cytology/metabolism ; MAP Kinase Signaling System ; Mice ; Microtubule-Associated Proteins/genetics/metabolism ; Receptor, Fibroblast Growth Factor, Type 4/genetics/metabolism ; *Signal Transduction
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 108
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2015-06-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ledford, Heidi -- England -- Nature. 2015 Jun 4;522(7554):20-4. doi: 10.1038/522020a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26040877" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Wild/genetics ; Biohazard Release/*prevention & control ; Biomedical Research/methods ; *CRISPR-Cas Systems ; Clustered Regularly Interspaced Short Palindromic Repeats/*genetics ; Crops, Agricultural/genetics ; Drosophila melanogaster/genetics ; Ecosystem ; Embryo Research ; Genetic Engineering/*adverse effects/*methods/trends ; Genetic Therapy/methods/trends ; Humans ; Livestock/genetics ; Mice ; Pilot Projects ; RNA, Guide/genetics ; *Risk Management
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 109
    Publication Date: 2015-09-15
    Description: Bromodomain and extra terminal protein (BET) inhibitors are first-in-class targeted therapies that deliver a new therapeutic opportunity by directly targeting bromodomain proteins that bind acetylated chromatin marks. Early clinical trials have shown promise, especially in acute myeloid leukaemia, and therefore the evaluation of resistance mechanisms is crucial to optimize the clinical efficacy of these drugs. Here we use primary mouse haematopoietic stem and progenitor cells immortalized with the fusion protein MLL-AF9 to generate several single-cell clones that demonstrate resistance, in vitro and in vivo, to the prototypical BET inhibitor, I-BET. Resistance to I-BET confers cross-resistance to chemically distinct BET inhibitors such as JQ1, as well as resistance to genetic knockdown of BET proteins. Resistance is not mediated through increased drug efflux or metabolism, but is shown to emerge from leukaemia stem cells both ex vivo and in vivo. Chromatin-bound BRD4 is globally reduced in resistant cells, whereas the expression of key target genes such as Myc remains unaltered, highlighting the existence of alternative mechanisms to regulate transcription. We demonstrate that resistance to BET inhibitors, in human and mouse leukaemia cells, is in part a consequence of increased Wnt/beta-catenin signalling, and negative regulation of this pathway results in restoration of sensitivity to I-BET in vitro and in vivo. Together, these findings provide new insights into the biology of acute myeloid leukaemia, highlight potential therapeutic limitations of BET inhibitors, and identify strategies that may enhance the clinical utility of these unique targeted therapies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fong, Chun Yew -- Gilan, Omer -- Lam, Enid Y N -- Rubin, Alan F -- Ftouni, Sarah -- Tyler, Dean -- Stanley, Kym -- Sinha, Devbarna -- Yeh, Paul -- Morison, Jessica -- Giotopoulos, George -- Lugo, Dave -- Jeffrey, Philip -- Lee, Stanley Chun-Wei -- Carpenter, Christopher -- Gregory, Richard -- Ramsay, Robert G -- Lane, Steven W -- Abdel-Wahab, Omar -- Kouzarides, Tony -- Johnstone, Ricky W -- Dawson, Sarah-Jane -- Huntly, Brian J P -- Prinjha, Rab K -- Papenfuss, Anthony T -- Dawson, Mark A -- England -- Nature. 2015 Sep 24;525(7570):538-42. doi: 10.1038/nature14888. Epub 2015 Sep 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research Division, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia. ; Sir Peter MacCallum Department of Oncology, The University of Melbourne, East Melbourne, Victoria 3002, Australia. ; Department of Haematology, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia. ; Bioinformatics Division, The Walter &Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia. ; Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia. ; Department of Haematology, Cambridge Institute for Medical Research and Wellcome Trust-MRC Stem Cell Institute, Cambridge CB2 0XY, UK. ; Epinova DPU, Immuno-Inflammation Centre of Excellence for Drug Discovery, GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, UK. ; Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Cancer Epigenetics DPU, Oncology R&D, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, USA. ; QIMR Berghofer Medical Research Institute, University of Queensland, Brisbane, Queensland 4029, Australia. ; Gurdon Institute and Department of Pathology, Tennis Court Road, Cambridge CB2 1QN, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26367796" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Azepines/pharmacology ; Benzodiazepines/*pharmacology ; Cell Line, Tumor ; Cells, Cultured ; Chromatin/metabolism ; Clone Cells/drug effects/metabolism/pathology ; Drug Resistance, Neoplasm/*drug effects/genetics ; Epigenesis, Genetic ; Gene Expression Regulation, Neoplastic/drug effects ; Genes, myc/genetics ; Hematopoietic Stem Cells/cytology/drug effects/metabolism ; Humans ; Leukemia, Myeloid, Acute/*drug therapy/genetics/*metabolism/pathology ; Mice ; Molecular Targeted Therapy ; Neoplastic Stem Cells/*drug effects/metabolism/*pathology ; Nuclear Proteins/*antagonists & inhibitors/metabolism ; Transcription Factors/*antagonists & inhibitors/metabolism ; Transcription, Genetic/drug effects ; Triazoles/pharmacology ; Wnt Signaling Pathway/drug effects ; beta Catenin/metabolism
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  • 110
    Publication Date: 2015-08-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willyard, Cassandra -- England -- Nature. 2015 Jul 30;523(7562):520-2. doi: 10.1038/523520a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26223610" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biotechnology/*methods/trends ; *Brain/anatomy & histology/cytology ; Breast/cytology ; Cell Aggregation ; Embryonic Stem Cells/cytology ; Humans ; *Kidney/anatomy & histology/cytology ; *Liver/anatomy & histology/cytology ; Mice ; Organ Specificity ; *Organoids/anatomy & histology/cytology/growth & development ; Stem Cell Research ; *Stomach/anatomy & histology/cytology
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  • 111
    Publication Date: 2015-12-15
    Description: Cellular differentiation involves profound remodelling of chromatic landscapes, yet the mechanisms by which somatic cell identity is subsequently maintained remain incompletely understood. To further elucidate regulatory pathways that safeguard the somatic state, we performed two comprehensive RNA interference (RNAi) screens targeting chromatin factors during transcription-factor-mediated reprogramming of mouse fibroblasts to induced pluripotent stem cells (iPS cells). Subunits of the chromatin assembly factor-1 (CAF-1) complex, including Chaf1a and Chaf1b, emerged as the most prominent hits from both screens, followed by modulators of lysine sumoylation and heterochromatin maintenance. Optimal modulation of both CAF-1 and transcription factor levels increased reprogramming efficiency by several orders of magnitude and facilitated iPS cell formation in as little as 4 days. Mechanistically, CAF-1 suppression led to a more accessible chromatin structure at enhancer elements early during reprogramming. These changes were accompanied by a decrease in somatic heterochromatin domains, increased binding of Sox2 to pluripotency-specific targets and activation of associated genes. Notably, suppression of CAF-1 also enhanced the direct conversion of B cells into macrophages and fibroblasts into neurons. Together, our findings reveal the histone chaperone CAF-1 to be a novel regulator of somatic cell identity during transcription-factor-induced cell-fate transitions and provide a potential strategy to modulate cellular plasticity in a regenerative setting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cheloufi, Sihem -- Elling, Ulrich -- Hopfgartner, Barbara -- Jung, Youngsook L -- Murn, Jernej -- Ninova, Maria -- Hubmann, Maria -- Badeaux, Aimee I -- Euong Ang, Cheen -- Tenen, Danielle -- Wesche, Daniel J -- Abazova, Nadezhda -- Hogue, Max -- Tasdemir, Nilgun -- Brumbaugh, Justin -- Rathert, Philipp -- Jude, Julian -- Ferrari, Francesco -- Blanco, Andres -- Fellner, Michaela -- Wenzel, Daniel -- Zinner, Marietta -- Vidal, Simon E -- Bell, Oliver -- Stadtfeld, Matthias -- Chang, Howard Y -- Almouzni, Genevieve -- Lowe, Scott W -- Rinn, John -- Wernig, Marius -- Aravin, Alexei -- Shi, Yang -- Park, Peter J -- Penninger, Josef M -- Zuber, Johannes -- Hochedlinger, Konrad -- P50-HG007735/HG/NHGRI NIH HHS/ -- R01 HD058013-06/HD/NICHD NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Dec 10;528(7581):218-24. doi: 10.1038/nature15749.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Cancer Center and Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts 02114, USA. ; Department of Stem Cell and Regenerative Biology and Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA. ; Howard Hughes Medical Institute, Chevy Chase, Maryland 20815, USA. ; Institute of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA), Vienna Biocenter (VBC), A-1030 Vienna, Austria. ; Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), A-1030 Vienna, Austria. ; Department of Biomedical Informatics, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Division of Genetics, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA. ; Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Division of Newborn Medicine, Boston Children's Hospital, Boston, Massachusetts 02115, USA. ; California Institute of Technology, Division of Biology and Biological Engineering, Pasadena, California 91125, USA. ; Institute for Stem Cell Biology and Regenerative Medicine, Department of Pathology and Department of Bioengineering, Stanford University, Stanford, California 94305, USA. ; Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts 02142, USA. ; Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; The Helen L. and Martin S. Kimmel Center for Biology and Medicine, Skirball Institute of Biomolecular Medicine, Department of Cell Biology, NYU School of Medicine, New York, New York 10016, USA. ; Center for Personal Dynamic Regulomes and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, California 94305, USA. ; Centre de Recherche, Institut Curie, 75248 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26659182" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Cellular Reprogramming/*genetics ; Chromatin/metabolism ; Chromatin Assembly Factor-1/antagonists & inhibitors/genetics/*metabolism ; Gene Expression Regulation/genetics ; Heterochromatin/metabolism ; Mice ; Nucleosomes/metabolism ; RNA Interference ; Transduction, Genetic
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  • 112
    Publication Date: 2015-08-08
    Description: Activation of the mu-opioid receptor (muOR) is responsible for the efficacy of the most effective analgesics. To shed light on the structural basis for muOR activation, here we report a 2.1 A X-ray crystal structure of the murine muOR bound to the morphinan agonist BU72 and a G protein mimetic camelid antibody fragment. The BU72-stabilized changes in the muOR binding pocket are subtle and differ from those observed for agonist-bound structures of the beta2-adrenergic receptor (beta2AR) and the M2 muscarinic receptor. Comparison with active beta2AR reveals a common rearrangement in the packing of three conserved amino acids in the core of the muOR, and molecular dynamics simulations illustrate how the ligand-binding pocket is conformationally linked to this conserved triad. Additionally, an extensive polar network between the ligand-binding pocket and the cytoplasmic domains appears to play a similar role in signal propagation for all three G-protein-coupled receptors.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4639397/" 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/PMC4639397/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, Weijiao -- Manglik, Aashish -- Venkatakrishnan, A J -- Laeremans, Toon -- Feinberg, Evan N -- Sanborn, Adrian L -- Kato, Hideaki E -- Livingston, Kathryn E -- Thorsen, Thor S -- Kling, Ralf C -- Granier, Sebastien -- Gmeiner, Peter -- Husbands, Stephen M -- Traynor, John R -- Weis, William I -- Steyaert, Jan -- Dror, Ron O -- Kobilka, Brian K -- R01GM083118/GM/NIGMS NIH HHS/ -- R37 DA036246/DA/NIDA NIH HHS/ -- R37DA036246/DA/NIDA NIH HHS/ -- T32 GM008294/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Aug 20;524(7565):315-21. doi: 10.1038/nature14886. Epub 2015 Aug 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Physiology, Stanford University School of Medicine, 279 Campus Drive, Stanford, California 94305, USA. ; Department of Computer Science, Stanford University, 318 Campus Drive, Stanford, California 94305, USA. ; Institute for Computational and Mathematical Engineering, Stanford University, 475 Via Ortega, Stanford, California 94305, USA. ; Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium. ; Structural Biology Research Center, VIB, Pleinlaan 2, B-1050 Brussels, Belgium. ; Department of Pharmacology, University of Michigan, Ann Arbor, Michigan 48109, USA. ; Department of Chemistry and Pharmacy, Friedrich Alexander University, Schuhstrasse 19, 91052 Erlangen, Germany. ; Institut de Genomique Fonctionnelle, CNRS UMR-5203 INSERM U1191, University of Montpellier, F-34000 Montpellier, France. ; Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK. ; Department of Structural Biology, Stanford University School of Medicine, 299 Campus Drive, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26245379" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Animals ; Binding Sites ; Crystallography, X-Ray ; Heterotrimeric GTP-Binding Proteins/chemistry/metabolism ; Mice ; Models, Molecular ; Molecular Dynamics Simulation ; Morphinans/chemistry/metabolism/pharmacology ; Protein Stability/drug effects ; Protein Structure, Tertiary ; Pyrroles/chemistry/metabolism/pharmacology ; Receptor, Muscarinic M2/chemistry ; Receptors, Adrenergic, beta-2/chemistry ; Receptors, Opioid, mu/agonists/*chemistry/*metabolism ; Single-Chain Antibodies/chemistry/pharmacology ; Structure-Activity Relationship
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  • 113
    Publication Date: 2015-01-30
    Description: Non-small-cell lung cancer is the leading cause of cancer-related death worldwide. Chemotherapies such as the topoisomerase II (TopoII) inhibitor etoposide effectively reduce disease in a minority of patients with this cancer; therefore, alternative drug targets, including epigenetic enzymes, are under consideration for therapeutic intervention. A promising potential epigenetic target is the methyltransferase EZH2, which in the context of the polycomb repressive complex 2 (PRC2) is well known to tri-methylate histone H3 at lysine 27 (H3K27me3) and elicit gene silencing. Here we demonstrate that EZH2 inhibition has differential effects on the TopoII inhibitor response of non-small-cell lung cancers in vitro and in vivo. EGFR and BRG1 mutations are genetic biomarkers that predict enhanced sensitivity to TopoII inhibitor in response to EZH2 inhibition. BRG1 loss-of-function mutant tumours respond to EZH2 inhibition with increased S phase, anaphase bridging, apoptosis and TopoII inhibitor sensitivity. Conversely, EGFR and BRG1 wild-type tumours upregulate BRG1 in response to EZH2 inhibition and ultimately become more resistant to TopoII inhibitor. EGFR gain-of-function mutant tumours are also sensitive to dual EZH2 inhibition and TopoII inhibitor, because of genetic antagonism between EGFR and BRG1. These findings suggest an opportunity for precision medicine in the genetically complex disease of non-small-cell lung cancer.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4393352/" 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/PMC4393352/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fillmore, Christine M -- Xu, Chunxiao -- Desai, Pooja T -- Berry, Joanne M -- Rowbotham, Samuel P -- Lin, Yi-Jang -- Zhang, Haikuo -- Marquez, Victor E -- Hammerman, Peter S -- Wong, Kwok-Kin -- Kim, Carla F -- CA120964/CA/NCI NIH HHS/ -- CA122794/CA/NCI NIH HHS/ -- CA140594/CA/NCI NIH HHS/ -- CA154303/CA/NCI NIH HHS/ -- CA163896/CA/NCI NIH HHS/ -- CA166480/CA/NCI NIH HHS/ -- K08 CA163677/CA/NCI NIH HHS/ -- R01 CA140594/CA/NCI NIH HHS/ -- R01 CA163896/CA/NCI NIH HHS/ -- R01 CA166480/CA/NCI NIH HHS/ -- R01 HL090136/HL/NHLBI NIH HHS/ -- U01 HL100402/HL/NHLBI NIH HHS/ -- Intramural NIH HHS/ -- England -- Nature. 2015 Apr 9;520(7546):239-42. doi: 10.1038/nature14122. Epub 2015 Jan 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Stem Cell Program, Boston Children's Hospital, Boston, Massachusetts 02115, USA [2] Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115, USA [3] Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA. ; 1] Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA [2] Belfer Institute for Applied Cancer Science, Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA. ; Stem Cell Program, Boston Children's Hospital, Boston, Massachusetts 02115, USA. ; Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Chemical Biology Laboratory, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, USA. ; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25629630" target="_blank"〉PubMed〈/a〉
    Keywords: Anaphase/drug effects ; Animals ; Antineoplastic Agents, Phytogenic/pharmacology/therapeutic use ; Apoptosis/drug effects ; Carcinoma, Non-Small-Cell Lung/drug therapy/enzymology/genetics/pathology ; Cell Cycle/drug effects ; Cell Line, Tumor ; DNA Helicases/*genetics ; Etoposide/pharmacology/therapeutic use ; Genes, erbB-1/*genetics ; Humans ; Lung Neoplasms/*drug therapy/enzymology/*genetics/pathology ; Mice ; Molecular Targeted Therapy ; Nuclear Proteins/*genetics ; Polycomb Repressive Complex 2/*antagonists & inhibitors ; Topoisomerase II Inhibitors/*pharmacology/*therapeutic use ; Transcription Factors/*genetics ; Xenograft Model Antitumor Assays
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  • 114
    Publication Date: 2015-03-25
    Description: Cyclic guanosine monophosphate (cGMP) is a second messenger molecule that transduces nitric-oxide- and natriuretic-peptide-coupled signalling, stimulating phosphorylation changes by protein kinase G. Enhancing cGMP synthesis or blocking its degradation by phosphodiesterase type 5A (PDE5A) protects against cardiovascular disease. However, cGMP stimulation alone is limited by counter-adaptions including PDE upregulation. Furthermore, although PDE5A regulates nitric-oxide-generated cGMP, nitric oxide signalling is often depressed by heart disease. PDEs controlling natriuretic-peptide-coupled cGMP remain uncertain. Here we show that cGMP-selective PDE9A (refs 7, 8) is expressed in the mammalian heart, including humans, and is upregulated by hypertrophy and cardiac failure. PDE9A regulates natriuretic-peptide- rather than nitric-oxide-stimulated cGMP in heart myocytes and muscle, and its genetic or selective pharmacological inhibition protects against pathological responses to neurohormones, and sustained pressure-overload stress. PDE9A inhibition reverses pre-established heart disease independent of nitric oxide synthase (NOS) activity, whereas PDE5A inhibition requires active NOS. Transcription factor activation and phosphoproteome analyses of myocytes with each PDE selectively inhibited reveals substantial differential targeting, with phosphorylation changes from PDE5A inhibition being more sensitive to NOS activation. Thus, unlike PDE5A, PDE9A can regulate cGMP signalling independent of the nitric oxide pathway, and its role in stress-induced heart disease suggests potential as a therapeutic target.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376609/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376609/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Dong I -- Zhu, Guangshuo -- Sasaki, Takashi -- Cho, Gun-Sik -- Hamdani, Nazha -- Holewinski, Ronald -- Jo, Su-Hyun -- Danner, Thomas -- Zhang, Manling -- Rainer, Peter P -- Bedja, Djahida -- Kirk, Jonathan A -- Ranek, Mark J -- Dostmann, Wolfgang R -- Kwon, Chulan -- Margulies, Kenneth B -- Van Eyk, Jennifer E -- Paulus, Walter J -- Takimoto, Eiki -- Kass, David A -- HHSN268201000032C/HL/NHLBI NIH HHS/ -- HL-07227/HL/NHLBI NIH HHS/ -- HL-089297/HL/NHLBI NIH HHS/ -- HL-093432/HL/NHLBI NIH HHS/ -- HL-119012/HL/NHLBI NIH HHS/ -- HL089847/HL/NHLBI NIH HHS/ -- HL105993/HL/NHLBI NIH HHS/ -- HL68891/HL/NHLBI NIH HHS/ -- N01HV28180/HL/NHLBI NIH HHS/ -- P01 HL107153/HL/NHLBI NIH HHS/ -- R01 HL089297/HL/NHLBI NIH HHS/ -- R01 HL089847/HL/NHLBI NIH HHS/ -- R01 HL093432/HL/NHLBI NIH HHS/ -- R01 HL105993/HL/NHLBI NIH HHS/ -- R01 HL111198/HL/NHLBI NIH HHS/ -- R01 HL119012/HL/NHLBI NIH HHS/ -- T32 HL007227/HL/NHLBI NIH HHS/ -- England -- Nature. 2015 Mar 26;519(7544):472-6. doi: 10.1038/nature14332. Epub 2015 Mar 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21205, USA. ; Advanced Medical Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa 227-0033, Japan. ; Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center, Van der Boechorststraat 7, 1081 BT Amsterdam, The Netherlands. ; 1] Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21205, USA [2] Heart Institute and Advanced Clinical Biosystems Research Institute, Cedar Sinai Medical Center, 8700 Beverly Blvd, AHSP A9229 Los Angeles, California 90048, USA. ; Department of Physiology, Institute of Bioscience and Biotechnology, BK21 plus Graduate Program, Kangwon National University College of Medicine, Chuncheon 200-701, Korea. ; Department of Pharmacology, University of Vermont, Burlington, Vermont 05405, USA. ; Department of Medicine, Division of Cardiovascular Medicine, Cardiovascular Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25799991" target="_blank"〉PubMed〈/a〉
    Keywords: 3',5'-Cyclic-AMP Phosphodiesterases/antagonists & ; inhibitors/deficiency/genetics/*metabolism ; Animals ; Aortic Valve Stenosis/complications ; Cardiomegaly/drug therapy/*enzymology/etiology/*metabolism ; Cyclic GMP/*metabolism ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Muscle Cells/enzymology ; Myocardium/enzymology ; Natriuretic Peptides/metabolism ; *Nitric Oxide/metabolism ; Nitric Oxide Synthase ; Phosphodiesterase Inhibitors/pharmacology/therapeutic use ; Pressure ; Signal Transduction/drug effects ; Stress, Physiological ; Up-Regulation
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  • 115
    Publication Date: 2015-03-31
    Description: Metastatic disease remains the primary cause of death for patients with breast cancer. The different steps of the metastatic cascade rely on reciprocal interactions between cancer cells and their microenvironment. Within this local microenvironment and in distant organs, immune cells and their mediators are known to facilitate metastasis formation. However, the precise contribution of tumour-induced systemic inflammation to metastasis and the mechanisms regulating systemic inflammation are poorly understood. Here we show that tumours maximize their chance of metastasizing by evoking a systemic inflammatory cascade in mouse models of spontaneous breast cancer metastasis. We mechanistically demonstrate that interleukin (IL)-1beta elicits IL-17 expression from gamma delta (gammadelta) T cells, resulting in systemic, granulocyte colony-stimulating factor (G-CSF)-dependent expansion and polarization of neutrophils in mice bearing mammary tumours. Tumour-induced neutrophils acquire the ability to suppress cytotoxic T lymphocytes carrying the CD8 antigen, which limit the establishment of metastases. Neutralization of IL-17 or G-CSF and absence of gammadelta T cells prevents neutrophil accumulation and downregulates the T-cell-suppressive phenotype of neutrophils. Moreover, the absence of gammadelta T cells or neutrophils profoundly reduces pulmonary and lymph node metastases without influencing primary tumour progression. Our data indicate that targeting this novel cancer-cell-initiated domino effect within the immune system--the gammadelta T cell/IL-17/neutrophil axis--represents a new strategy to inhibit metastatic disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4475637/" 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/PMC4475637/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coffelt, Seth B -- Kersten, Kelly -- Doornebal, Chris W -- Weiden, Jorieke -- Vrijland, Kim -- Hau, Cheei-Sing -- Verstegen, Niels J M -- Ciampricotti, Metamia -- Hawinkels, Lukas J A C -- Jonkers, Jos -- de Visser, Karin E -- 11-0677/Worldwide Cancer Research/United Kingdom -- 615300/European Research Council/International -- England -- Nature. 2015 Jun 18;522(7556):345-8. doi: 10.1038/nature14282. Epub 2015 Mar 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Immunology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands. ; 1] Department of Molecular Cell Biology, Leiden University Medical Center, Albinusdreef 2, Leiden, 2300 RC, The Netherlands [2] Centre for Biomedical Genetics, Leiden University Medical Center, Albinusdreef 2, Leiden, 2300 RC, The Netherlands. ; Division of Molecular Pathology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25822788" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breast Neoplasms/immunology/*pathology ; CD8-Positive T-Lymphocytes/cytology/immunology ; Disease Models, Animal ; Female ; Granulocyte Colony-Stimulating Factor/immunology/metabolism ; Interleukin-17/*biosynthesis/immunology ; Interleukin-1beta/immunology ; Lung/pathology ; Lung Neoplasms/immunology/pathology/secondary ; Lymphatic Metastasis/immunology/pathology ; Lymphocyte Activation ; Mice ; Neoplasm Metastasis/*immunology/*pathology ; Neutrophils/cytology/immunology/*metabolism ; Phenotype ; T-Lymphocyte Subsets/immunology/*metabolism ; Tumor Microenvironment
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  • 116
    Publication Date: 2015-10-08
    Description: The human kidney contains up to 2 million epithelial nephrons responsible for blood filtration. Regenerating the kidney requires the induction of the more than 20 distinct cell types required for excretion and the regulation of pH, and electrolyte and fluid balance. We have previously described the simultaneous induction of progenitors for both collecting duct and nephrons via the directed differentiation of human pluripotent stem cells. Paradoxically, although both are of intermediate mesoderm in origin, collecting duct and nephrons have distinct temporospatial origins. Here we identify the developmental mechanism regulating the preferential induction of collecting duct versus kidney mesenchyme progenitors. Using this knowledge, we have generated kidney organoids that contain nephrons associated with a collecting duct network surrounded by renal interstitium and endothelial cells. Within these organoids, individual nephrons segment into distal and proximal tubules, early loops of Henle, and glomeruli containing podocytes elaborating foot processes and undergoing vascularization. When transcription profiles of kidney organoids were compared to human fetal tissues, they showed highest congruence with first trimester human kidney. Furthermore, the proximal tubules endocytose dextran and differentially apoptose in response to cisplatin, a nephrotoxicant. Such kidney organoids represent powerful models of the human organ for future applications, including nephrotoxicity screening, disease modelling and as a source of cells for therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takasato, Minoru -- Er, Pei X -- Chiu, Han S -- Maier, Barbara -- Baillie, Gregory J -- Ferguson, Charles -- Parton, Robert G -- Wolvetang, Ernst J -- Roost, Matthias S -- Chuva de Sousa Lopes, Susana M -- Little, Melissa H -- England -- Nature. 2015 Oct 22;526(7574):564-8. doi: 10.1038/nature15695. Epub 2015 Oct 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Murdoch Childrens Research Institute, The Royal Children's Hospital Melbourne, Parkville, Victoria 3052, Australia. ; Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia. ; Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia. ; Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands. ; Department of Paediatrics, The University of Melbourne, Parkville, Victoria 3010, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26444236" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Lineage ; Coculture Techniques ; Feeder Cells ; Fetus/anatomy & histology/cytology/embryology ; Fibroblasts/cytology ; Humans ; Induced Pluripotent Stem Cells/*cytology ; Kidney Tubules, Collecting/cytology ; Kidney Tubules, Proximal/cytology/embryology/physiology ; Mesoderm/cytology ; Mice ; *Models, Biological ; Nephrons/anatomy & histology/*cytology/*embryology/physiology ; *Organogenesis ; Organoids/*cytology/embryology ; Tissue Culture Techniques
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  • 117
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2015-02-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ley, Ruth E -- England -- Nature. 2015 Feb 26;518(7540):S7. doi: 10.1038/518S7a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cornell University.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25715280" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Genetic Predisposition to Disease ; Germ-Free Life ; Gram-Positive Bacteria/physiology ; Humans ; Inflammatory Bowel Diseases/genetics/microbiology ; Intestines/microbiology ; Mice ; Microbiota/immunology/*physiology ; Obesity/etiology/genetics/microbiology/therapy ; Sample Size ; Symbiosis ; Thinness/etiology/genetics/microbiology ; Twin Studies as Topic ; Twins/genetics
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  • 118
    Publication Date: 2015-09-01
    Description: Dopamine neurons are thought to facilitate learning by comparing actual and expected reward. Despite two decades of investigation, little is known about how this comparison is made. To determine how dopamine neurons calculate prediction error, we combined optogenetic manipulations with extracellular recordings in the ventral tegmental area while mice engaged in classical conditioning. Here we demonstrate, by manipulating the temporal expectation of reward, that dopamine neurons perform subtraction, a computation that is ideal for reinforcement learning but rarely observed in the brain. Furthermore, selectively exciting and inhibiting neighbouring GABA (gamma-aminobutyric acid) neurons in the ventral tegmental area reveals that these neurons are a source of subtraction: they inhibit dopamine neurons when reward is expected, causally contributing to prediction-error calculations. Finally, bilaterally stimulating ventral tegmental area GABA neurons dramatically reduces anticipatory licking to conditioned odours, consistent with an important role for these neurons in reinforcement learning. Together, our results uncover the arithmetic and local circuitry underlying dopamine prediction errors.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4567485/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4567485/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eshel, Neir -- Bukwich, Michael -- Rao, Vinod -- Hemmelder, Vivian -- Tian, Ju -- Uchida, Naoshige -- F30 MH100729/MH/NIMH NIH HHS/ -- F30MH100729/MH/NIMH NIH HHS/ -- R01 MH095953/MH/NIMH NIH HHS/ -- R01 MH101207/MH/NIMH NIH HHS/ -- R01MH095953/MH/NIMH NIH HHS/ -- R01MH101207/MH/NIMH NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- T32GM007753/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Sep 10;525(7568):243-6. doi: 10.1038/nature14855. Epub 2015 Aug 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Brain Science, Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26322583" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Conditioning, Classical ; Dopamine/*metabolism ; Dopaminergic Neurons/*metabolism ; GABAergic Neurons/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; *Models, Neurological ; Neural Pathways/*physiology ; Odors/analysis ; Optogenetics ; Reinforcement (Psychology) ; Reward ; Time Factors ; Ventral Tegmental Area/*cytology/*physiology ; gamma-Aminobutyric Acid/metabolism
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  • 119
    Publication Date: 2015-09-17
    Description: The elucidation of factors that activate the regeneration of the adult mammalian heart is of major scientific and therapeutic importance. Here we found that epicardial cells contain a potent cardiogenic activity identified as follistatin-like 1 (Fstl1). Epicardial Fstl1 declines following myocardial infarction and is replaced by myocardial expression. Myocardial Fstl1 does not promote regeneration, either basally or upon transgenic overexpression. Application of the human Fstl1 protein (FSTL1) via an epicardial patch stimulates cell cycle entry and division of pre-existing cardiomyocytes, improving cardiac function and survival in mouse and swine models of myocardial infarction. The data suggest that the loss of epicardial FSTL1 is a maladaptive response to injury, and that its restoration would be an effective way to reverse myocardial death and remodelling following myocardial infarction in humans.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4762253/" 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/PMC4762253/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wei, Ke -- Serpooshan, Vahid -- Hurtado, Cecilia -- Diez-Cunado, Marta -- Zhao, Mingming -- Maruyama, Sonomi -- Zhu, Wenhong -- Fajardo, Giovanni -- Noseda, Michela -- Nakamura, Kazuto -- Tian, Xueying -- Liu, Qiaozhen -- Wang, Andrew -- Matsuura, Yuka -- Bushway, Paul -- Cai, Wenqing -- Savchenko, Alex -- Mahmoudi, Morteza -- Schneider, Michael D -- van den Hoff, Maurice J B -- Butte, Manish J -- Yang, Phillip C -- Walsh, Kenneth -- Zhou, Bin -- Bernstein, Daniel -- Mercola, Mark -- Ruiz-Lozano, Pilar -- 5UM1 HL113456/HL/NHLBI NIH HHS/ -- HL065484/HL/NHLBI NIH HHS/ -- HL108176/HL/NHLBI NIH HHS/ -- HL113601/HL/NHLBI NIH HHS/ -- HL116591/HL/NHLBI NIH HHS/ -- K08 AI079268/AI/NIAID NIH HHS/ -- P01 HL098053/HL/NHLBI NIH HHS/ -- P30 AR061303/AR/NIAMS NIH HHS/ -- P30 CA030199/CA/NCI NIH HHS/ -- R01 HL086879/HL/NHLBI NIH HHS/ -- R01 HL113601/HL/NHLBI NIH HHS/ -- UM1 HL113456/HL/NHLBI NIH HHS/ -- England -- Nature. 2015 Sep 24;525(7570):479-85. doi: 10.1038/nature15372. Epub 2015 Sep 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bioengineering, University of California, San Diego, La Jolla, California 92037, USA. ; Sanford-Burnham-Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, California 92037, USA. ; Stanford Cardiovascular Institute and Department of Pediatrics, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA. ; Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts 02118, USA. ; Imperial College London, Faculty of Medicine, Imperial Centre for Translational and Experimental Medicine, Du Cane Road, London W12 0NN, UK. ; Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, and Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China. ; Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, 1417613151 Tehran, Iran. ; Academic Medical Center. Dept Anatomy, Embryology and Physiology. Meibergdreef 15. 1105AZ Amsterdam, The Netherlands. ; CAS Center for Excellence in Brain Science, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26375005" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle/drug effects ; Cell Proliferation/drug effects ; Culture Media, Conditioned/pharmacology ; Female ; Follistatin-Related Proteins/genetics/*metabolism ; Humans ; Male ; Mice ; Myoblasts, Cardiac/cytology/drug effects ; Myocardial Infarction/genetics/metabolism/pathology/physiopathology ; Myocardium/*metabolism ; Myocytes, Cardiac/cytology/drug effects/metabolism ; Pericardium/cytology/drug effects/*growth & development/*metabolism ; Rats ; *Regeneration/drug effects ; Signal Transduction ; Swine ; Transgenes/genetics
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  • 120
    Publication Date: 2015-04-02
    Description: The RNA-guided endonuclease Cas9 has emerged as a versatile genome-editing platform. However, the size of the commonly used Cas9 from Streptococcus pyogenes (SpCas9) limits its utility for basic research and therapeutic applications that use the highly versatile adeno-associated virus (AAV) delivery vehicle. Here, we characterize six smaller Cas9 orthologues and show that Cas9 from Staphylococcus aureus (SaCas9) can edit the genome with efficiencies similar to those of SpCas9, while being more than 1 kilobase shorter. We packaged SaCas9 and its single guide RNA expression cassette into a single AAV vector and targeted the cholesterol regulatory gene Pcsk9 in the mouse liver. Within one week of injection, we observed 〉40% gene modification, accompanied by significant reductions in serum Pcsk9 and total cholesterol levels. We further assess the genome-wide targeting specificity of SaCas9 and SpCas9 using BLESS, and demonstrate that SaCas9-mediated in vivo genome editing has the potential to be efficient and specific.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4393360/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4393360/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ran, F Ann -- Cong, Le -- Yan, Winston X -- Scott, David A -- Gootenberg, Jonathan S -- Kriz, Andrea J -- Zetsche, Bernd -- Shalem, Ophir -- Wu, Xuebing -- Makarova, Kira S -- Koonin, Eugene V -- Sharp, Phillip A -- Zhang, Feng -- 5DP1-MH100706/DP/NCCDPHP CDC HHS/ -- 5P30EY012196-17/EY/NEI NIH HHS/ -- 5R01DK097768-03/DK/NIDDK NIH HHS/ -- DP1 MH100706/MH/NIMH NIH HHS/ -- P01-CA42063/CA/NCI NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- R01 EY024259/EY/NEI NIH HHS/ -- R01-CA133404/CA/NCI NIH HHS/ -- R01-GM34277/GM/NIGMS NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- T32 GM008313/GM/NIGMS NIH HHS/ -- T32GM007753/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Apr 9;520(7546):186-91. doi: 10.1038/nature14299. Epub 2015 Apr 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Society of Fellows, Harvard University, Cambridge, Massachusetts 02138, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Graduate Program in Biophysics, Harvard Medical School, Boston, Massachusetts 02115, USA [3] Harvard-MIT Division of Health Sciences and Technology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [3] Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] Department of Systems Biology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA. ; 1] David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Computational and Systems Biology Graduate Program, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, USA. ; 1] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA [2] McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [3] Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [4] Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25830891" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; CRISPR-Associated Proteins/genetics/*metabolism ; Cholesterol/blood/metabolism ; Gene Targeting ; Genetic Engineering/*methods ; Genome/*genetics ; Liver/metabolism/physiology ; Male ; Mice ; Mice, Inbred C57BL ; Proprotein Convertases/biosynthesis/blood/deficiency/genetics ; Serine Endopeptidases/biosynthesis/blood/deficiency/genetics ; Staphylococcus aureus/*enzymology/genetics ; Substrate Specificity
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  • 121
    Publication Date: 2015-06-09
    Description: Spatial working memory, the caching of behaviourally relevant spatial cues on a timescale of seconds, is a fundamental constituent of cognition. Although the prefrontal cortex and hippocampus are known to contribute jointly to successful spatial working memory, the anatomical pathway and temporal window for the interaction of these structures critical to spatial working memory has not yet been established. Here we find that direct hippocampal-prefrontal afferents are critical for encoding, but not for maintenance or retrieval, of spatial cues in mice. These cues are represented by the activity of individual prefrontal units in a manner that is dependent on hippocampal input only during the cue-encoding phase of a spatial working memory task. Successful encoding of these cues appears to be mediated by gamma-frequency synchrony between the two structures. These findings indicate a critical role for the direct hippocampal-prefrontal afferent pathway in the continuous updating of task-related spatial information during spatial working memory.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4505751/" 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/PMC4505751/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spellman, Timothy -- Rigotti, Mattia -- Ahmari, Susanne E -- Fusi, Stefano -- Gogos, Joseph A -- Gordon, Joshua A -- K08 MH087718/MH/NIMH NIH HHS/ -- MH081968/MH/NIMH NIH HHS/ -- MH096274/MH/NIMH NIH HHS/ -- R01 MH081968/MH/NIMH NIH HHS/ -- R01 MH096274/MH/NIMH NIH HHS/ -- England -- Nature. 2015 Jun 18;522(7556):309-14. doi: 10.1038/nature14445. Epub 2015 Jun 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology and Cellular Biophysics, Columbia University, 630 West 168th Street, New York, New York 10032, USA. ; 1] Department of Neuroscience, Columbia University, 1051 Riverside Drive, New York, New York 10032, USA [2] IBM T. J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, New York 10598, USA [3] Italian Academy for Advanced Studies in America, Columbia University, 1161 Amsterdam Avenue, New York, New York 10032, USA. ; 1] Translational Neuroscience Program, Department of Psychiatry, University of Pittsburgh, 450 Techology Drive, Pittsburgh, Pennsylvania 15219, USA [2] Center for Neuroscience and Center for the Neural Basis of Cognition, University of Pittsburgh, 200 Lothrop Drive, Pittsburgh, Pennsylvania 15261, USA. ; 1] Department of Neuroscience, Columbia University, 1051 Riverside Drive, New York, New York 10032, USA [2] Kavli Institute for Brain Sciences, Columbia University, 1051 Riverside Drive, New York, New York 10032, USA. ; 1] Department of Physiology and Cellular Biophysics, Columbia University, 630 West 168th Street, New York, New York 10032, USA [2] Department of Neuroscience, Columbia University, 1051 Riverside Drive, New York, New York 10032, USA. ; 1] Department of Psychiatry, Columbia University, 1051 Riverside Drive, New York, New York 10032, USA [2] Division of Integrative Neuroscience, New York State Psychiatric Institute, 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/26053122" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Afferent Pathways/physiology ; Animals ; Cues ; Hippocampus/cytology/*physiology ; Male ; Memory, Short-Term/*physiology ; Mice ; Models, Neurological ; Optogenetics ; Prefrontal Cortex/cytology/*physiology ; Space Perception/*physiology ; Spatial Memory/*physiology
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  • 122
    Publication Date: 2015-06-18
    Description: Fructose is a major component of dietary sugar and its overconsumption exacerbates key pathological features of metabolic syndrome. The central fructose-metabolising enzyme is ketohexokinase (KHK), which exists in two isoforms: KHK-A and KHK-C, generated through mutually exclusive alternative splicing of KHK pre-mRNAs. KHK-C displays superior affinity for fructose compared with KHK-A and is produced primarily in the liver, thus restricting fructose metabolism almost exclusively to this organ. Here we show that myocardial hypoxia actuates fructose metabolism in human and mouse models of pathological cardiac hypertrophy through hypoxia-inducible factor 1alpha (HIF1alpha) activation of SF3B1 and SF3B1-mediated splice switching of KHK-A to KHK-C. Heart-specific depletion of SF3B1 or genetic ablation of Khk, but not Khk-A alone, in mice, suppresses pathological stress-induced fructose metabolism, growth and contractile dysfunction, thus defining signalling components and molecular underpinnings of a fructose metabolism regulatory system crucial for pathological growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mirtschink, Peter -- Krishnan, Jaya -- Grimm, Fiona -- Sarre, Alexandre -- Horl, Manuel -- Kayikci, Melis -- Fankhauser, Niklaus -- Christinat, Yann -- Cortijo, Cedric -- Feehan, Owen -- Vukolic, Ana -- Sossalla, Samuel -- Stehr, Sebastian N -- Ule, Jernej -- Zamboni, Nicola -- Pedrazzini, Thierry -- Krek, Wilhelm -- England -- Nature. 2015 Jun 25;522(7557):444-9. doi: 10.1038/nature14508. Epub 2015 Jun 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Molecular Health Sciences, ETH Zurich, 8093 Zurich, Switzerland. ; Department of Medicine, University of Lausanne, 1011 Lausanne, Switzerland. ; Institute of Molecular Systems Biology, ETH Zurich, 8093 Zurich, Switzerland. ; MRC-Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK. ; Universitatsmedizin Gottingen, Klinik fur Kardiologie und Pneumologie, D-37075 Gottingen, and DZHK (German Centre for Cardiovascular Research), Partner Site Gottingen, Germany. ; Department of Anesthesiology and Critical Care Medicine, University Hospital Jena, 07747 Jena, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26083752" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Animals ; Cardiomyopathy, Hypertrophic/genetics/*metabolism/pathology/physiopathology ; Disease Models, Animal ; Fructokinases/deficiency/genetics/*metabolism ; Fructose/*metabolism ; Humans ; Hypoxia-Inducible Factor 1, alpha Subunit/genetics/*metabolism ; Isoenzymes/deficiency/genetics/metabolism ; Male ; Metabolic Syndrome X/metabolism ; Mice ; Phosphoproteins/deficiency/genetics/*metabolism ; Ribonucleoprotein, U2 Small Nuclear/deficiency/genetics/*metabolism
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  • 123
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    Nature Publishing Group (NPG)
    Publication Date: 2015-12-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weir, Kirsten -- England -- Nature. 2015 Dec 17;528(7582):S130-1. doi: 10.1038/528S130a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26672786" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Proliferation ; Chronic Disease/prevention & control/therapy ; DNA Damage ; Growth Differentiation Factor 15/metabolism ; Humans ; Inflammation/*complications/microbiology/pathology/therapy ; Male ; Mice ; Oxidative Stress ; Prostatic Neoplasms/*etiology/microbiology/*pathology/prevention & control ; Prostatitis/*complications/microbiology/pathology/therapy ; Rats
    Print ISSN: 0028-0836
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  • 124
    facet.materialart.
    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2015-02-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rastan, Sohaila -- England -- Nature. 2015 Feb 5;518(7537):36. doi: 10.1038/518036a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Radiobiology Unit in Harwell, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25652989" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosomes, Mammalian/genetics ; Female ; Genetics/*history ; Great Britain ; History, 20th Century ; History, 21st Century ; Humans ; Male ; Mice ; RNA, Long Noncoding/genetics ; Terminology as Topic ; X Chromosome Inactivation/genetics
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  • 125
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2015-05-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chakradhar, Shraddha -- England -- Nature. 2015 May 14;521(7551):S16. doi: 10.1038/521S16a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25970454" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoma/genetics/pathology ; Animals ; Clinical Trials as Topic ; Colonic Polyps/genetics/pathology ; *Colorectal Neoplasms/drug therapy/genetics/pathology ; Diet, High-Fat/adverse effects ; Disease Models, Animal ; Drug Resistance, Neoplasm/drug effects ; Environment ; Humans ; Immunotherapy ; Mice ; Molecular Targeted Therapy ; Mutation/genetics ; Sedentary Lifestyle ; *Uncertainty
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  • 126
    Publication Date: 2015-11-13
    Description: Animals have evolved homeostatic responses to changes in oxygen availability that act on different timescales. Although the hypoxia-inducible factor (HIF) transcriptional pathway that controls long-term responses to low oxygen (hypoxia) has been established, the pathway that mediates acute responses to hypoxia in mammals is not well understood. Here we show that the olfactory receptor gene Olfr78 is highly and selectively expressed in oxygen-sensitive glomus cells of the carotid body, a chemosensory organ at the carotid artery bifurcation that monitors blood oxygen and stimulates breathing within seconds when oxygen declines. Olfr78 mutants fail to increase ventilation in hypoxia but respond normally to hypercapnia. Glomus cells are present in normal numbers and appear structurally intact, but hypoxia-induced carotid body activity is diminished. Lactate, a metabolite that rapidly accumulates in hypoxia and induces hyperventilation, activates Olfr78 in heterologous expression experiments, induces calcium transients in glomus cells, and stimulates carotid sinus nerve activity through Olfr78. We propose that, in addition to its role in olfaction, Olfr78 acts as a hypoxia sensor in the breathing circuit by sensing lactate produced when oxygen levels decline.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4765808/" 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/PMC4765808/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, Andy J -- Ortega, Fabian E -- Riegler, Johannes -- Madison, Daniel V -- Krasnow, Mark A -- K12 HL089989/HL/NHLBI NIH HHS/ -- MH065541/MH/NIMH NIH HHS/ -- NS069375/NS/NINDS NIH HHS/ -- P30 NS069375/NS/NINDS NIH HHS/ -- R01 MH065541/MH/NIMH NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Nov 12;527(7577):240-4. doi: 10.1038/nature15721.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Stanford University School of Medicine and Howard Hughes Medical Institute, Stanford, California 94305-5307, USA. ; Department of Medicine, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Molecular and Cellular Physiology, 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/26560302" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anoxia/genetics/metabolism ; Calcium Signaling ; Carotid Body/cytology/drug effects/metabolism ; Carotid Sinus/innervation ; Female ; HEK293 Cells ; Humans ; Hypercapnia/genetics/metabolism ; Lactic Acid/*metabolism/pharmacology ; Mice ; Olfactory Receptor Neurons/*metabolism ; Oxygen/blood/*metabolism ; Receptors, Odorant/deficiency/*metabolism ; *Respiration
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  • 127
    Publication Date: 2015-01-22
    Description: DNA methylation is an epigenetic modification associated with transcriptional repression of promoters and is essential for mammalian development. Establishment of DNA methylation is mediated by the de novo DNA methyltransferases DNMT3A and DNMT3B, whereas DNMT1 ensures maintenance of methylation through replication. Absence of these enzymes is lethal, and somatic mutations in these genes have been associated with several human diseases. How genomic DNA methylation patterns are regulated remains poorly understood, as the mechanisms that guide recruitment and activity of DNMTs in vivo are largely unknown. To gain insights into this matter we determined genomic binding and site-specific activity of the mammalian de novo DNA methyltransferases DNMT3A and DNMT3B. We show that both enzymes localize to methylated, CpG-dense regions in mouse stem cells, yet are excluded from active promoters and enhancers. By specifically measuring sites of de novo methylation, we observe that enzymatic activity reflects binding. De novo methylation increases with CpG density, yet is excluded from nucleosomes. Notably, we observed selective binding of DNMT3B to the bodies of transcribed genes, which leads to their preferential methylation. This targeting to transcribed sequences requires SETD2-mediated methylation of lysine 36 on histone H3 and a functional PWWP domain of DNMT3B. Together these findings reveal how sequence and chromatin cues guide de novo methyltransferase activity to ensure methylome integrity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baubec, Tuncay -- Colombo, Daniele F -- Wirbelauer, Christiane -- Schmidt, Juliane -- Burger, Lukas -- Krebs, Arnaud R -- Akalin, Altuna -- Schubeler, Dirk -- England -- Nature. 2015 Apr 9;520(7546):243-7. doi: 10.1038/nature14176. Epub 2015 Jan 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Friedrich Miescher Institute for Biomedical Research, Maulbeerstrasse 66, CH-4058 Basel, Switzerland. ; 1] Friedrich Miescher Institute for Biomedical Research, Maulbeerstrasse 66, CH-4058 Basel, Switzerland [2] Swiss Institute of Bioinformatics. Maulbeerstrasse 66, CH-4058 Basel, Switzerland. ; 1] Friedrich Miescher Institute for Biomedical Research, Maulbeerstrasse 66, CH-4058 Basel, Switzerland [2] University of Basel, Faculty of Sciences, Petersplatz 1, CH-4001 Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25607372" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Chromatin/chemistry/genetics/metabolism ; CpG Islands/genetics ; DNA (Cytosine-5-)-Methyltransferase/chemistry/*metabolism ; DNA Methylation/*genetics ; Embryonic Stem Cells/enzymology/metabolism ; Enhancer Elements, Genetic/genetics ; Epigenesis, Genetic/*genetics ; Genome/*genetics ; Genomics ; Histone-Lysine N-Methyltransferase/deficiency/genetics/metabolism ; Histones/chemistry/metabolism ; Lysine/metabolism ; Mice ; Promoter Regions, Genetic/genetics ; Protein Binding ; Protein Structure, Tertiary ; Protein Transport ; Transcription, Genetic/genetics
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  • 128
    Publication Date: 2015-11-05
    Description: Staphylococcus aureus is considered to be an extracellular pathogen. However, survival of S. aureus within host cells may provide a reservoir relatively protected from antibiotics, thus enabling long-term colonization of the host and explaining clinical failures and relapses after antibiotic therapy. Here we confirm that intracellular reservoirs of S. aureus in mice comprise a virulent subset of bacteria that can establish infection even in the presence of vancomycin, and we introduce a novel therapeutic that effectively kills intracellular S. aureus. This antibody-antibiotic conjugate consists of an anti-S. aureus antibody conjugated to a highly efficacious antibiotic that is activated only after it is released in the proteolytic environment of the phagolysosome. The antibody-antibiotic conjugate is superior to vancomycin for treatment of bacteraemia and provides direct evidence that intracellular S. aureus represents an important component of invasive infections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lehar, Sophie M -- Pillow, Thomas -- Xu, Min -- Staben, Leanna -- Kajihara, Kimberly K -- Vandlen, Richard -- DePalatis, Laura -- Raab, Helga -- Hazenbos, Wouter L -- Morisaki, J Hiroshi -- Kim, Janice -- Park, Summer -- Darwish, Martine -- Lee, Byoung-Chul -- Hernandez, Hilda -- Loyet, Kelly M -- Lupardus, Patrick -- Fong, Rina -- Yan, Donghong -- Chalouni, Cecile -- Luis, Elizabeth -- Khalfin, Yana -- Plise, Emile -- Cheong, Jonathan -- Lyssikatos, Joseph P -- Strandh, Magnus -- Koefoed, Klaus -- Andersen, Peter S -- Flygare, John A -- Wah Tan, Man -- Brown, Eric J -- Mariathasan, Sanjeev -- England -- Nature. 2015 Nov 19;527(7578):323-8. doi: 10.1038/nature16057. Epub 2015 Nov 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Infectious Diseases Department, Genentech Inc., South San Francisco, California 94080, USA. ; Medicinal Chemistry Department, Genentech Inc., South San Francisco, California 94080, USA. ; Translational Immunology Department, Genentech Inc., South San Francisco, California 94080, USA. ; Protein Chemistry Department, Genentech Inc., South San Francisco, California 94080, USA. ; Biochemical and Cellular Pharmacology Department, Genentech Inc., South San Francisco, California 94080, USA. ; Structural Biology Department, Genentech Inc., South San Francisco, California 94080, USA. ; Pathology Department, Genentech Inc., South San Francisco, California 94080, USA. ; Drug metabolism and Pharmacokinetics Department, Genentech Inc., South San Francisco, California 94080, USA. ; Symphogen A/S, Pederstrupvej 93, DK-2750 Ballerup, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26536114" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/*pharmacology/therapeutic use ; *Bacteremia/drug therapy/microbiology ; Carrier State/drug therapy/microbiology ; Drug Design ; Female ; Immunoconjugates/chemistry/*pharmacology/*therapeutic use ; Intracellular Space/drug effects/*microbiology ; Methicillin-Resistant Staphylococcus aureus/drug effects/pathogenicity ; Mice ; Microbial Sensitivity Tests ; Phagosomes/drug effects/metabolism/microbiology ; Staphylococcal Infections/drug therapy/*microbiology/pathology ; Staphylococcus aureus/*drug effects/pathogenicity ; Vancomycin/*pharmacology/therapeutic use
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  • 129
    Publication Date: 2015-11-19
    Description: Age-associated insulin resistance (IR) and obesity-associated IR are two physiologically distinct forms of adult-onset diabetes. While macrophage-driven inflammation is a core driver of obesity-associated IR, the underlying mechanisms of the obesity-independent yet highly prevalent age-associated IR are largely unexplored. Here we show, using comparative adipo-immune profiling in mice, that fat-resident regulatory T cells, termed fTreg cells, accumulate in adipose tissue as a function of age, but not obesity. Supporting the existence of two distinct mechanisms underlying IR, mice deficient in fTreg cells are protected against age-associated IR, yet remain susceptible to obesity-associated IR and metabolic disease. By contrast, selective depletion of fTreg cells via anti-ST2 antibody treatment increases adipose tissue insulin sensitivity. These findings establish that distinct immune cell populations within adipose tissue underlie ageing- and obesity-associated IR, and implicate fTreg cells as adipo-immune drivers and potential therapeutic targets in the treatment of age-associated IR.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4670283/" 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/PMC4670283/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bapat, Sagar P -- Myoung Suh, Jae -- Fang, Sungsoon -- Liu, Sihao -- Zhang, Yang -- Cheng, Albert -- Zhou, Carmen -- Liang, Yuqiong -- LeBlanc, Mathias -- Liddle, Christopher -- Atkins, Annette R -- Yu, Ruth T -- Downes, Michael -- Evans, Ronald M -- Zheng, Ye -- AI099295/AI/NIAID NIH HHS/ -- AI107027/AI/NIAID NIH HHS/ -- CA014195/CA/NCI NIH HHS/ -- DK057978/DK/NIDDK NIH HHS/ -- DK090962/DK/NIDDK NIH HHS/ -- ES010337/ES/NIEHS NIH HHS/ -- F30 DK096828/DK/NIDDK NIH HHS/ -- HL088093/HL/NHLBI NIH HHS/ -- HL105278/HL/NHLBI NIH HHS/ -- P01 HL088093/HL/NHLBI NIH HHS/ -- P42 ES010337/ES/NIEHS NIH HHS/ -- R01 AI107027/AI/NIAID NIH HHS/ -- R01 HL105278/HL/NHLBI NIH HHS/ -- R24 DK090962/DK/NIDDK NIH HHS/ -- R37 DK057978/DK/NIDDK NIH HHS/ -- R56 AI099295/AI/NIAID NIH HHS/ -- T32 GM007198/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Dec 3;528(7580):137-41. doi: 10.1038/nature16151. Epub 2015 Nov 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunobiology and Microbial Pathogenesis Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA. ; Gene Expression Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA. ; Graduate School of Medical Science and Engineering, KAIST 34141, South Korea. ; Department of Biotechnology, College of Life Sciences, Sejong University, Seoul 143-747, South Korea. ; Storr Liver Centre, Westmead Millennium Institute, Sydney Medical School, University of Sydney, Sydney 2145, Australia. ; Howard Hughes Medical Institute, The 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/26580014" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/*cytology/*immunology ; Aging/*immunology ; Animals ; Diabetes Mellitus, Type 2/metabolism ; Glucose/metabolism ; Inflammation/immunology/metabolism ; Insulin Resistance/*immunology ; Macrophages/immunology ; Male ; Metabolic Syndrome X/immunology/metabolism ; Mice ; Obesity/metabolism ; T-Lymphocytes, Regulatory/*cytology/*immunology
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  • 130
    Publication Date: 2015-09-17
    Description: Development of functional nanoparticles can be encumbered by unanticipated material properties and biological events, which can affect nanoparticle effectiveness in complex, physiologically relevant systems. Despite the advances in bottom-up nanoengineering and surface chemistry, reductionist functionalization approaches remain inadequate in replicating the complex interfaces present in nature and cannot avoid exposure of foreign materials. Here we report on the preparation of polymeric nanoparticles enclosed in the plasma membrane of human platelets, which are a unique population of cellular fragments that adhere to a variety of disease-relevant substrates. The resulting nanoparticles possess a right-side-out unilamellar membrane coating functionalized with immunomodulatory and adhesion antigens associated with platelets. Compared to uncoated particles, the platelet membrane-cloaked nanoparticles have reduced cellular uptake by macrophage-like cells and lack particle-induced complement activation in autologous human plasma. The cloaked nanoparticles also display platelet-mimicking properties such as selective adhesion to damaged human and rodent vasculatures as well as enhanced binding to platelet-adhering pathogens. In an experimental rat model of coronary restenosis and a mouse model of systemic bacterial infection, docetaxel and vancomycin, respectively, show enhanced therapeutic efficacy when delivered by the platelet-mimetic nanoparticles. The multifaceted biointerfacing enabled by the platelet membrane cloaking method provides a new approach in developing functional nanoparticles for disease-targeted delivery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Che-Ming J -- Fang, Ronnie H -- Wang, Kuei-Chun -- Luk, Brian T -- Thamphiwatana, Soracha -- Dehaini, Diana -- Nguyen, Phu -- Angsantikul, Pavimol -- Wen, Cindy H -- Kroll, Ashley V -- Carpenter, Cody -- Ramesh, Manikantan -- Qu, Vivian -- Patel, Sherrina H -- Zhu, Jie -- Shi, William -- Hofman, Florence M -- Chen, Thomas C -- Gao, Weiwei -- Zhang, Kang -- Chien, Shu -- Zhang, Liangfang -- R01DK095168/DK/NIDDK NIH HHS/ -- R01EY25090/EY/NEI NIH HHS/ -- R01HL108735/HL/NHLBI NIH HHS/ -- R25CA153915/CA/NCI NIH HHS/ -- England -- Nature. 2015 Oct 1;526(7571):118-21. doi: 10.1038/nature15373. Epub 2015 Sep 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, USA. ; Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, USA. ; Department of Bioengineering, University of California, San Diego, La Jolla, California 92093, USA. ; Institute of Engineering in Medicine, University of California, San Diego, La Jolla, California 92093, USA. ; Shiley Eye Institute, University of California, San Diego, La Jolla, California 92093, USA. ; Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA. ; Veterans Administration Healthcare System, San Diego, California 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26374997" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/*administration & dosage/pharmacokinetics ; Blood Platelets/*cytology ; Blood Vessels/cytology/metabolism/pathology ; Cell Membrane/*metabolism ; Collagen/chemistry/immunology ; Complement Activation/immunology ; Coronary Restenosis/blood/drug therapy/metabolism ; Disease Models, Animal ; Drug Delivery Systems/*methods ; Humans ; Macrophages/immunology ; Male ; Mice ; Nanoparticles/*administration & dosage/*chemistry ; *Platelet Adhesiveness ; Polymers/chemistry ; Rats ; Rats, Sprague-Dawley ; Staphylococcal Infections/blood/drug therapy/metabolism/microbiology ; Staphylococcus aureus/cytology/metabolism ; Taxoids/administration & dosage/pharmacokinetics ; Unilamellar Liposomes/chemistry ; Vancomycin/administration & dosage/pharmacokinetics
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  • 131
    Publication Date: 2015-05-15
    Description: The tumour microenvironment may contribute to tumorigenesis owing to mechanical forces such as fibrotic stiffness or mechanical pressure caused by the expansion of hyper-proliferative cells. Here we explore the contribution of the mechanical pressure exerted by tumour growth onto non-tumorous adjacent epithelium. In the early stage of mouse colon tumour development in the Notch(+)Apc(+/1638N) mouse model, we observed mechanistic pressure stress in the non-tumorous epithelial cells caused by hyper-proliferative adjacent crypts overexpressing active Notch, which is associated with increased Ret and beta-catenin signalling. We thus developed a method that allows the delivery of a defined mechanical pressure in vivo, by subcutaneously inserting a magnet close to the mouse colon. The implanted magnet generated a magnetic force on ultra-magnetic liposomes, stabilized in the mesenchymal cells of the connective tissue surrounding colonic crypts after intravenous injection. The magnetically induced pressure quantitatively mimicked the endogenous early tumour growth stress in the order of 1,200 Pa, without affecting tissue stiffness, as monitored by ultrasound strain imaging and shear wave elastography. The exertion of pressure mimicking that of tumour growth led to rapid Ret activation and downstream phosphorylation of beta-catenin on Tyr654, imparing its interaction with the E-cadherin in adherens junctions, and which was followed by beta-catenin nuclear translocation after 15 days. As a consequence, increased expression of beta-catenin-target genes was observed at 1 month, together with crypt enlargement accompanying the formation of early tumorous aberrant crypt foci. Mechanical activation of the tumorigenic beta-catenin pathway suggests unexplored modes of tumour propagation based on mechanical signalling pathways in healthy epithelial cells surrounding the tumour, which may contribute to tumour heterogeneity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fernandez-Sanchez, Maria Elena -- Barbier, Sandrine -- Whitehead, Joanne -- Bealle, Gaelle -- Michel, Aude -- Latorre-Ossa, Heldmuth -- Rey, Colette -- Fouassier, Laura -- Claperon, Audrey -- Brulle, Laura -- Girard, Elodie -- Servant, Nicolas -- Rio-Frio, Thomas -- Marie, Helene -- Lesieur, Sylviane -- Housset, Chantal -- Gennisson, Jean-Luc -- Tanter, Mickael -- Menager, Christine -- Fre, Silvia -- Robine, Sylvie -- Farge, Emmanuel -- England -- Nature. 2015 Jul 2;523(7558):92-5. doi: 10.1038/nature14329. Epub 2015 May 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut Curie, Centre de Recherche, PSL Research University, CNRS UMR 168, Physicochimie Curie Mechanics and Genetics of Embryonic and Tumour Development, INSERM, Fondation Pierre-Gilles de Gennes, F-75005 Paris, France. ; UPMC, Sorbonne Universites, Laboratoire PHENIX Physico-chimie des Electrolytes et Nanosystemes Interfaciaux, CNRS UMR 8234, F-75005 Paris, France. ; Langevin Institut, Waves and Images ESPCI ParisTech, PSL Research University, CNRS UMR7587, Inserm U979. F-75005 Paris, France. ; Sorbonne Universites, UPMC and INSERM, UMR-S 938, CDR Saint-Antoine, F-75012 Paris, France. ; CNRS UMR3666/INSERM U1143, Endocytic Trafficking and Therapeutic Delivery, Institut Curie, Centre de Recherche, F-75005 Paris, France. ; Bioinformatic platform, U900, Institut Curie, MINES ParisTech, F-75005 Paris, France. ; Next-generation sequencing platform, Institut Curie, F-75005 Paris, France. ; CNRS UMR 8612, Laboratoire Physico-Chimie des Systemes Polyphases, Institut Galien Paris-Sud, LabEx LERMIT, Faculte de Pharmacie, Universite Paris-Sud, 92 296 Chatenay-Malabry, France. ; CNRS UMR 3215/INSERM U934, Unite de Genetique et Biologie du Developpement, Notch Signaling in Stem Cells and Tumors, Institut Curie, Centre de Recherche, F-75005 Paris, France. ; CNRS UMR144, Compartimentation et dynamique cellulaires, Morphogenesis and Cell Signalling Institut Curie, Centre de Recherche, F-75005 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25970250" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Animals ; Carcinogenesis/*pathology ; Colonic Neoplasms/*physiopathology ; Epithelial Cells/cytology/pathology ; Female ; Gene Expression Regulation, Neoplastic ; Magnets ; Male ; Metal Nanoparticles ; Mice ; Mice, Inbred C57BL ; Phosphorylation ; *Pressure ; Proto-Oncogene Proteins c-ret/metabolism ; Receptors, Notch/genetics/metabolism ; Signal Transduction ; *Tumor Microenvironment ; beta Catenin/*genetics/metabolism
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  • 132
    Publication Date: 2015-03-25
    Description: B cells are selected for an intermediate level of B-cell antigen receptor (BCR) signalling strength: attenuation below minimum (for example, non-functional BCR) or hyperactivation above maximum (for example, self-reactive BCR) thresholds of signalling strength causes negative selection. In approximately 25% of cases, acute lymphoblastic leukaemia (ALL) cells carry the oncogenic BCR-ABL1 tyrosine kinase (Philadelphia chromosome positive), which mimics constitutively active pre-BCR signalling. Current therapeutic approaches are largely focused on the development of more potent tyrosine kinase inhibitors to suppress oncogenic signalling below a minimum threshold for survival. We tested the hypothesis that targeted hyperactivation--above a maximum threshold--will engage a deletional checkpoint for removal of self-reactive B cells and selectively kill ALL cells. Here we find, by testing various components of proximal pre-BCR signalling in mouse BCR-ABL1 cells, that an incremental increase of Syk tyrosine kinase activity was required and sufficient to induce cell death. Hyperactive Syk was functionally equivalent to acute activation of a self-reactive BCR on ALL cells. Despite oncogenic transformation, this basic mechanism of negative selection was still functional in ALL cells. Unlike normal pre-B cells, patient-derived ALL cells express the inhibitory receptors PECAM1, CD300A and LAIR1 at high levels. Genetic studies revealed that Pecam1, Cd300a and Lair1 are critical to calibrate oncogenic signalling strength through recruitment of the inhibitory phosphatases Ptpn6 (ref. 7) and Inpp5d (ref. 8). Using a novel small-molecule inhibitor of INPP5D (also known as SHIP1), we demonstrated that pharmacological hyperactivation of SYK and engagement of negative B-cell selection represents a promising new strategy to overcome drug resistance in human ALL.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4441554/" 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/PMC4441554/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Zhengshan -- Shojaee, Seyedmehdi -- Buchner, Maike -- Geng, Huimin -- Lee, Jae Woong -- Klemm, Lars -- Titz, Bjorn -- Graeber, Thomas G -- Park, Eugene -- Tan, Ying Xim -- Satterthwaite, Anne -- Paietta, Elisabeth -- Hunger, Stephen P -- Willman, Cheryl L -- Melnick, Ari -- Loh, Mignon L -- Jung, Jae U -- Coligan, John E -- Bolland, Silvia -- Mak, Tak W -- Limnander, Andre -- Jumaa, Hassan -- Reth, Michael -- Weiss, Arthur -- Lowell, Clifford A -- Muschen, Markus -- 101880/Wellcome Trust/United Kingdom -- CA180794/CA/NCI NIH HHS/ -- CA180820/CA/NCI NIH HHS/ -- R01 AI068150/AI/NIAID NIH HHS/ -- R01 AI113272/AI/NIAID NIH HHS/ -- R01 CA137060/CA/NCI NIH HHS/ -- R01 CA139032/CA/NCI NIH HHS/ -- R01 CA157644/CA/NCI NIH HHS/ -- R01 CA169458/CA/NCI NIH HHS/ -- R01 CA172558/CA/NCI NIH HHS/ -- R01CA137060/CA/NCI NIH HHS/ -- R01CA139032/CA/NCI NIH HHS/ -- R01CA157644/CA/NCI NIH HHS/ -- R01CA169458/CA/NCI NIH HHS/ -- R01CA172558/CA/NCI NIH HHS/ -- U01 CA157937/CA/NCI NIH HHS/ -- U10 CA180794/CA/NCI NIH HHS/ -- U10 CA180820/CA/NCI NIH HHS/ -- U10 CA180827/CA/NCI NIH HHS/ -- U10 CA180886/CA/NCI NIH HHS/ -- U24 CA114737/CA/NCI NIH HHS/ -- U24 CA196172/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 May 21;521(7552):357-61. doi: 10.1038/nature14231. Epub 2015 Mar 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Laboratory Medicine, University of California, San Francisco, California 94143, USA. ; Crump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, University of California, Los Angeles, California 90095, USA. ; Rosalind Russell-Ephraim P. Engleman Medical Research Center for Arthritis, Division of Rheumatology, Department of Medicine, Howard Hughes Medical Institute, University of California, San Francisco, California 94143, USA. ; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Department of Medicine, Albert Einstein College of Medicine, Bronx, New York 10466, USA. ; Division of Pediatric Oncology and Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, Philadelphia 19104, USA. ; University of New Mexico Cancer Center, Albuquerque, New Mexico 87102, USA. ; Departments of Medicine and Pharmacology, Weill Cornell Medical College, New York, New York 10065, USA. ; Pediatric Hematology-Oncology, University of California, San Francisco, California 94143, USA. ; Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, California 90033, USA. ; Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA. ; Autoimmunity and Functional Genomics Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA. ; The Campbell Family Institute for Breast Cancer Research, University Health Network, 620 University Avenue, Toronto, Ontario M5G 2M9, Canada. ; Department of Anatomy, University of California, San Francisco, California 94143, USA. ; Institute of Immunology, University Clinics Ulm, 89081 Ulm, Germany. ; BIOSS Centre for Biological Signalling Studies and Faculty of Biology, Albert-Ludwigs-Universitat Freiburg, and MPI of Immunbiologie and Epigenetics, 79104 Freiburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25799995" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs/genetics ; Animals ; Antigens, CD/metabolism ; Antigens, CD31/metabolism ; B-Lymphocytes/drug effects/*metabolism/*pathology ; Cell Death/drug effects ; Cell Line, Tumor ; Cell Transformation, Neoplastic ; Disease Models, Animal ; Drug Resistance, Neoplasm/drug effects ; Enzyme Activation/drug effects ; Female ; Fusion Proteins, bcr-abl/genetics ; Gene Deletion ; Humans ; Intracellular Signaling Peptides and Proteins/agonists/metabolism ; Mice ; Mice, Inbred NOD ; Mice, SCID ; Phosphoric Monoester Hydrolases/antagonists & inhibitors/metabolism ; Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug ; therapy/genetics/*metabolism/*pathology ; Precursor Cells, B-Lymphoid/drug effects/metabolism/pathology ; Protein Tyrosine Phosphatase, Non-Receptor Type 6/deficiency/genetics/metabolism ; Protein-Tyrosine Kinases/metabolism ; Receptors, Antigen, B-Cell/deficiency/genetics/metabolism ; Receptors, Immunologic/genetics/metabolism ; *Signal Transduction/drug effects ; Tyrosine/metabolism ; Xenograft Model Antitumor Assays
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  • 133
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2015-06-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holmes, David -- England -- Nature. 2015 Jun 25;522(7557):S63. doi: 10.1038/522S63a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26107101" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Behavior, Addictive/classification/genetics/physiopathology/prevention & ; control/rehabilitation ; Brain/drug effects/physiology/physiopathology ; Dopamine Antagonists/pharmacology/therapeutic use ; Gene-Environment Interaction ; Genetic Predisposition to Disease/genetics ; Humans ; Mice ; Molecular Targeted Therapy ; Optogenetics ; Rats ; Receptors, Dopamine/metabolism ; Reward ; Secondary Prevention/methods ; *Substance-Related Disorders/classification/genetics/physiopathology/prevention & ; control/rehabilitation ; Vaccines/economics/therapeutic use
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  • 134
    Publication Date: 2015-05-20
    Description: Mutations or amplification of the MET proto-oncogene are involved in the pathogenesis of several tumours, which rely on the constitutive engagement of this pathway for their growth and survival. However, MET is expressed not only by cancer cells but also by tumour-associated stromal cells, although its precise role in this compartment is not well characterized. Here we show that MET is required for neutrophil chemoattraction and cytotoxicity in response to its ligand hepatocyte growth factor (HGF). Met deletion in mouse neutrophils enhances tumour growth and metastasis. This phenotype correlates with reduced neutrophil infiltration to both the primary tumour and metastatic sites. Similarly, Met is necessary for neutrophil transudation during colitis, skin rash or peritonitis. Mechanistically, Met is induced by tumour-derived tumour necrosis factor (TNF)-alpha or other inflammatory stimuli in both mouse and human neutrophils. This induction is instrumental for neutrophil transmigration across an activated endothelium and for inducible nitric oxide synthase production upon HGF stimulation. Consequently, HGF/MET-dependent nitric oxide release by neutrophils promotes cancer cell killing, which abates tumour growth and metastasis. After systemic administration of a MET kinase inhibitor, we prove that the therapeutic benefit of MET targeting in cancer cells is partly countered by the pro-tumoural effect arising from MET blockade in neutrophils. Our work identifies an unprecedented role of MET in neutrophils, suggests a potential 'Achilles' heel' of MET-targeted therapies in cancer, and supports the rationale for evaluating anti-MET drugs in certain inflammatory diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4594765/" 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/PMC4594765/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finisguerra, Veronica -- Di Conza, Giusy -- Di Matteo, Mario -- Serneels, Jens -- Costa, Sandra -- Thompson, A A Roger -- Wauters, Els -- Walmsley, Sarah -- Prenen, Hans -- Granot, Zvi -- Casazza, Andrea -- Mazzone, Massimiliano -- 098516/Wellcome Trust/United Kingdom -- 308459/European Research Council/International -- G0802255/Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2015 Jun 18;522(7556):349-53. doi: 10.1038/nature14407. Epub 2015 May 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Laboratory of Molecular Oncology and Angiogenesis, Vesalius Research Center, VIB, Leuven B3000, Belgium [2] Laboratory of Molecular Oncology and Angiogenesis, Vesalius Research Center, Department of Oncology, KU Leuven, Leuven B3000, Belgium. ; 1] Laboratory of Molecular Oncology and Angiogenesis, Vesalius Research Center, VIB, Leuven B3000, Belgium [2] Laboratory of Molecular Oncology and Angiogenesis, Vesalius Research Center, Department of Oncology, KU Leuven, Leuven B3000, Belgium [3] Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal [4] ICVS/3B's - PT Government Associate Laboratory, 4710-057 Braga/Guimaraes, Portugal. ; Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, UK. ; 1] Respiratory Division, University Hospital Gasthuisberg, Leuven B3000, Belgium [2] Laboratory of Translational Genetics, Vesalius Research Center, VIB, Leuven B3000, Belgium [3] Laboratory of Translational Genetics, Vesalius Research Center, Department of Oncology, KU Leuven, Leuven B3000, Belgium. ; Digestive Oncology Unit, University Hospital Gasthuisberg, Department of Oncology, KU Leuven, Leuven B3000, Belgium. ; Department of Developmental Biology and Cancer Research, The Institute for Medical Research Israel-Canada, The Hebrew University, Jerusalem 91120, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25985180" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Animals ; Antineoplastic Agents/*adverse effects/*pharmacology ; Disease Models, Animal ; Disease Progression ; Female ; Gene Deletion ; Hepatocyte Growth Factor ; Humans ; Inflammation/immunology/pathology ; Male ; Mice ; Middle Aged ; Neoplasm Metastasis ; Neoplasms/drug therapy/*immunology/*metabolism/pathology ; Neutrophils/drug effects/*immunology/secretion ; Nitric Oxide/secretion ; Proto-Oncogene Proteins c-met/antagonists & ; inhibitors/deficiency/genetics/*metabolism ; Solubility ; Transendothelial and Transepithelial Migration ; Tumor Necrosis Factor-alpha/metabolism ; Xenograft Model Antitumor Assays
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  • 135
    Publication Date: 2015-01-07
    Description: Cell growth and proliferation are tightly linked to nutrient availability. The mechanistic target of rapamycin complex 1 (mTORC1) integrates the presence of growth factors, energy levels, glucose and amino acids to modulate metabolic status and cellular responses. mTORC1 is activated at the surface of lysosomes by the RAG GTPases and the Ragulator complex through a not fully understood mechanism monitoring amino acid availability in the lysosomal lumen and involving the vacuolar H(+)-ATPase. Here we describe the uncharacterized human member 9 of the solute carrier family 38 (SLC38A9) as a lysosomal membrane-resident protein competent in amino acid transport. Extensive functional proteomic analysis established SLC38A9 as an integral part of the Ragulator-RAG GTPases machinery. Gain of SLC38A9 function rendered cells resistant to amino acid withdrawal, whereas loss of SLC38A9 expression impaired amino-acid-induced mTORC1 activation. Thus SLC38A9 is a physical and functional component of the amino acid sensing machinery that controls the activation of mTOR.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376665/" 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/PMC4376665/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rebsamen, Manuele -- Pochini, Lorena -- Stasyk, Taras -- de Araujo, Mariana E G -- Galluccio, Michele -- Kandasamy, Richard K -- Snijder, Berend -- Fauster, Astrid -- Rudashevskaya, Elena L -- Bruckner, Manuela -- Scorzoni, Stefania -- Filipek, Przemyslaw A -- Huber, Kilian V M -- Bigenzahn, Johannes W -- Heinz, Leonhard X -- Kraft, Claudine -- Bennett, Keiryn L -- Indiveri, Cesare -- Huber, Lukas A -- Superti-Furga, Giulio -- P 26682/Austrian Science Fund FWF/Austria -- England -- Nature. 2015 Mar 26;519(7544):477-81. doi: 10.1038/nature14107. Epub 2015 Jan 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria. ; Department DiBEST (Biology, Ecology and Earth Sciences), University of Calabria, 87036 Arcavacata di Rende, Italy. ; Biocenter, Division of Cell Biology, Innsbruck Medical University, 6020 Innsbruck, Austria. ; Max F. Perutz Laboratories, University of Vienna, 1030 Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25561175" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Transport Systems/*metabolism ; Amino Acids/*metabolism ; Animals ; Cell Line ; Humans ; Lysosomes/*metabolism ; Mice ; Monomeric GTP-Binding Proteins/metabolism ; Multiprotein Complexes/*metabolism ; Nucleotides/metabolism ; TOR Serine-Threonine Kinases/*metabolism
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  • 136
    Publication Date: 2015-04-23
    Description: Tumour-specific mutations are ideal targets for cancer immunotherapy as they lack expression in healthy tissues and can potentially be recognized as neo-antigens by the mature T-cell repertoire. Their systematic targeting by vaccine approaches, however, has been hampered by the fact that every patient's tumour possesses a unique set of mutations ('the mutanome') that must first be identified. Recently, we proposed a personalized immunotherapy approach to target the full spectrum of a patient's individual tumour-specific mutations. Here we show in three independent murine tumour models that a considerable fraction of non-synonymous cancer mutations is immunogenic and that, unexpectedly, the majority of the immunogenic mutanome is recognized by CD4(+) T cells. Vaccination with such CD4(+) immunogenic mutations confers strong antitumour activity. Encouraged by these findings, we established a process by which mutations identified by exome sequencing could be selected as vaccine targets solely through bioinformatic prioritization on the basis of their expression levels and major histocompatibility complex (MHC) class II-binding capacity for rapid production as synthetic poly-neo-epitope messenger RNA vaccines. We show that vaccination with such polytope mRNA vaccines induces potent tumour control and complete rejection of established aggressively growing tumours in mice. Moreover, we demonstrate that CD4(+) T cell neo-epitope vaccination reshapes the tumour microenvironment and induces cytotoxic T lymphocyte responses against an independent immunodominant antigen in mice, indicating orchestration of antigen spread. Finally, we demonstrate an abundance of mutations predicted to bind to MHC class II in human cancers as well by employing the same predictive algorithm on corresponding human cancer types. Thus, the tailored immunotherapy approach introduced here may be regarded as a universally applicable blueprint for comprehensive exploitation of the substantial neo-epitope target repertoire of cancers, enabling the effective targeting of every patient's tumour with vaccines produced 'just in time'.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kreiter, Sebastian -- Vormehr, Mathias -- van de Roemer, Niels -- Diken, Mustafa -- Lower, Martin -- Diekmann, Jan -- Boegel, Sebastian -- Schrors, Barbara -- Vascotto, Fulvia -- Castle, John C -- Tadmor, Arbel D -- Schoenberger, Stephen P -- Huber, Christoph -- Tureci, Ozlem -- Sahin, Ugur -- England -- Nature. 2015 Apr 30;520(7549):692-6. doi: 10.1038/nature14426. Epub 2015 Apr 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉TRON - Translational Oncology at the University Medical Center of Johannes Gutenberg University, Freiligrathstrasse 12, 55131 Mainz, Germany. ; Research Center for Immunotherapy (FZI), Langenbeckstrasse 1, Building 708, 55131 Mainz, Germany. ; 1] TRON - Translational Oncology at the University Medical Center of Johannes Gutenberg University, Freiligrathstrasse 12, 55131 Mainz, Germany [2] Biopharmaceutical New Technologies (BioNTech) Corporation, An der Goldgrube 12, 55131 Mainz, Germany. ; La Jolla Institute for Allergy and Immunology, 9420 Athena Circle, La Jolla, California 92037, USA. ; 1] TRON - Translational Oncology at the University Medical Center of Johannes Gutenberg University, Freiligrathstrasse 12, 55131 Mainz, Germany [2] Research Center for Immunotherapy (FZI), Langenbeckstrasse 1, Building 708, 55131 Mainz, Germany [3] Biopharmaceutical New Technologies (BioNTech) Corporation, An der Goldgrube 12, 55131 Mainz, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25901682" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; CD4-Positive T-Lymphocytes/immunology ; Cancer Vaccines/genetics/immunology ; Computer Simulation ; Disease Models, Animal ; Epitopes, T-Lymphocyte/*genetics/immunology ; Exome/genetics ; Female ; Histocompatibility Antigens Class II/*genetics/*immunology/metabolism ; Humans ; Immunotherapy/*methods ; Melanoma, Experimental/genetics/*immunology/*therapy ; Mice ; Mutation/*genetics ; Precision Medicine/methods ; Sequence Analysis, DNA ; Survival Analysis
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  • 137
    Publication Date: 2015-02-25
    Description: Haematopoietic stem cells (HSCs) are responsible for the lifelong production of blood cells. The accumulation of DNA damage in HSCs is a hallmark of ageing and is probably a major contributing factor in age-related tissue degeneration and malignant transformation. A number of accelerated ageing syndromes are associated with defective DNA repair and genomic instability, including the most common inherited bone marrow failure syndrome, Fanconi anaemia. However, the physiological source of DNA damage in HSCs from both normal and diseased individuals remains unclear. Here we show in mice that DNA damage is a direct consequence of inducing HSCs to exit their homeostatic quiescent state in response to conditions that model physiological stress, such as infection or chronic blood loss. Repeated activation of HSCs out of their dormant state provoked the attrition of normal HSCs and, in the case of mice with a non-functional Fanconi anaemia DNA repair pathway, led to a complete collapse of the haematopoietic system, which phenocopied the highly penetrant bone marrow failure seen in Fanconi anaemia patients. Our findings establish a novel link between physiological stress and DNA damage in normal HSCs and provide a mechanistic explanation for the universal accumulation of DNA damage in HSCs during ageing and the accelerated failure of the haematopoietic system in Fanconi anaemia patients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walter, Dagmar -- Lier, Amelie -- Geiselhart, Anja -- Thalheimer, Frederic B -- Huntscha, Sina -- Sobotta, Mirko C -- Moehrle, Bettina -- Brocks, David -- Bayindir, Irem -- Kaschutnig, Paul -- Muedder, Katja -- Klein, Corinna -- Jauch, Anna -- Schroeder, Timm -- Geiger, Hartmut -- Dick, Tobias P -- Holland-Letz, Tim -- Schmezer, Peter -- Lane, Steven W -- Rieger, Michael A -- Essers, Marieke A G -- Williams, David A -- Trumpp, Andreas -- Milsom, Michael D -- England -- Nature. 2015 Apr 23;520(7548):549-52. doi: 10.1038/nature14131. Epub 2015 Feb 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH (HI-STEM), 69120 Heidelberg, Germany. ; Deutsches Krebsforschungszentrum (DKFZ), Division of Stem Cells and Cancer, Experimental Hematology Group, 69120 Heidelberg, Germany. ; LOEWE Center for Cell and Gene Therapy and Department of Hematology/Oncology, Goethe University Frankfurt, 60595 Frankfurt am Main, Germany. ; Deutsches Krebsforschungszentrum (DKFZ), DKFZ-ZMBH Alliance, Division of Redox Regulation, 69120 Heidelberg, Germany. ; Institute for Molecular Medicine, Stem Cells and Aging, Ulm University, 89081 Ulm, Germany. ; Deutsches Krebsforschungszentrum (DKFZ), Division of Stem Cells and Cancer, 69120 Heidelberg, Germany. ; Institute of Human Genetics, University of Heidelberg, 69120 Heidelberg, Germany. ; ETH Zurich, Department of Biosystems Science and Engineering, 4058 Basel, Switzerland. ; 1] Institute for Molecular Medicine, Stem Cells and Aging, Ulm University, 89081 Ulm, Germany [2] Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA. ; Deutsches Krebsforschungszentrum (DKFZ), Division of Biostatistics, 69120 Heidelberg, Germany. ; Deutsches Krebsforschungszentrum (DKFZ), Division of Epigenomics and Cancer Risk Factors, 69120 Heidelberg, Germany. ; QIMR Berghofer Medical Research Institute, University of Queensland, Brisbane 4006, Australia. ; 1] Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH (HI-STEM), 69120 Heidelberg, Germany [2] Deutsches Krebsforschungszentrum (DKFZ), Division of Stem Cells and Cancer, Hematopoietic Stem Cells and Stress Group, 69120 Heidelberg, Germany. ; 1] Boston Children's Hospital, Boston, Massachusetts 02115, USA [2] Dana-Faber Cancer Institute, Boston, Massachusetts 02115, USA [3] Harvard Stem Cell Institute, Boston, Massachusetts 02138, USA [4] Harvard Medical School, Boston, Massachusetts 02115, USA. ; 1] Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH (HI-STEM), 69120 Heidelberg, Germany [2] Deutsches Krebsforschungszentrum (DKFZ), Division of Stem Cells and Cancer, 69120 Heidelberg, Germany. ; 1] Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH (HI-STEM), 69120 Heidelberg, Germany [2] Deutsches Krebsforschungszentrum (DKFZ), Division of Stem Cells and Cancer, Experimental Hematology Group, 69120 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25707806" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow/pathology ; *Cell Cycle ; Cell Death ; Cell Proliferation ; *DNA Damage ; Fanconi Anemia/metabolism ; Hematopoietic Stem Cells/*cytology/*metabolism ; Mice ; Reactive Oxygen Species/metabolism ; Stress, Physiological
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  • 138
    Publication Date: 2015-10-16
    Description: Solid cancer cells commonly enter the blood and disseminate systemically, but are highly inefficient at forming distant metastases for poorly understood reasons. Here we studied human melanomas that differed in their metastasis histories in patients and in their capacity to metastasize in NOD-SCID-Il2rg(-/-) (NSG) mice. We show that melanomas had high frequencies of cells that formed subcutaneous tumours, but much lower percentages of cells that formed tumours after intravenous or intrasplenic transplantation, particularly among inefficiently metastasizing melanomas. Melanoma cells in the blood and visceral organs experienced oxidative stress not observed in established subcutaneous tumours. Successfully metastasizing melanomas underwent reversible metabolic changes during metastasis that increased their capacity to withstand oxidative stress, including increased dependence on NADPH-generating enzymes in the folate pathway. Antioxidants promoted distant metastasis in NSG mice. Folate pathway inhibition using low-dose methotrexate, ALDH1L2 knockdown, or MTHFD1 knockdown inhibited distant metastasis without significantly affecting the growth of subcutaneous tumours in the same mice. Oxidative stress thus limits distant metastasis by melanoma cells in vivo.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4644103/" 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/PMC4644103/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Piskounova, Elena -- Agathocleous, Michalis -- Murphy, Malea M -- Hu, Zeping -- Huddlestun, Sara E -- Zhao, Zhiyu -- Leitch, A Marilyn -- Johnson, Timothy M -- DeBerardinis, Ralph J -- Morrison, Sean J -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Nov 12;527(7577):186-91. doi: 10.1038/nature15726. Epub 2015 Oct 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Children's Research Institute and the Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Department of Dermatology, University of Michigan, Ann Arbor, Michigan 48109-2216, USA. ; Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26466563" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antioxidants/metabolism ; Female ; Folic Acid/metabolism ; Gene Knockdown Techniques ; Humans ; Male ; Melanoma/blood/*metabolism/*pathology ; Methotrexate/pharmacology ; Methylenetetrahydrofolate Dehydrogenase (NADP)/deficiency/metabolism ; Mice ; Mice, Inbred NOD ; Mice, SCID ; NADP/metabolism ; Neoplasm Metastasis/*prevention & control ; Neoplasm Transplantation ; *Oxidative Stress ; Oxidoreductases Acting on CH-NH Group Donors/deficiency/metabolism
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  • 139
    Publication Date: 2015-02-27
    Description: Pancreatic cancer remains one of the most lethal of malignancies and a major health burden. We performed whole-genome sequencing and copy number variation (CNV) analysis of 100 pancreatic ductal adenocarcinomas (PDACs). Chromosomal rearrangements leading to gene disruption were prevalent, affecting genes known to be important in pancreatic cancer (TP53, SMAD4, CDKN2A, ARID1A and ROBO2) and new candidate drivers of pancreatic carcinogenesis (KDM6A and PREX2). Patterns of structural variation (variation in chromosomal structure) classified PDACs into 4 subtypes with potential clinical utility: the subtypes were termed stable, locally rearranged, scattered and unstable. A significant proportion harboured focal amplifications, many of which contained druggable oncogenes (ERBB2, MET, FGFR1, CDK6, PIK3R3 and PIK3CA), but at low individual patient prevalence. Genomic instability co-segregated with inactivation of DNA maintenance genes (BRCA1, BRCA2 or PALB2) and a mutational signature of DNA damage repair deficiency. Of 8 patients who received platinum therapy, 4 of 5 individuals with these measures of defective DNA maintenance responded.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4523082/" 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/PMC4523082/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Waddell, Nicola -- Pajic, Marina -- Patch, Ann-Marie -- Chang, David K -- Kassahn, Karin S -- Bailey, Peter -- Johns, Amber L -- Miller, David -- Nones, Katia -- Quek, Kelly -- Quinn, Michael C J -- Robertson, Alan J -- Fadlullah, Muhammad Z H -- Bruxner, Tim J C -- Christ, Angelika N -- Harliwong, Ivon -- Idrisoglu, Senel -- Manning, Suzanne -- Nourse, Craig -- Nourbakhsh, Ehsan -- Wani, Shivangi -- Wilson, Peter J -- Markham, Emma -- Cloonan, Nicole -- Anderson, Matthew J -- Fink, J Lynn -- Holmes, Oliver -- Kazakoff, Stephen H -- Leonard, Conrad -- Newell, Felicity -- Poudel, Barsha -- Song, Sarah -- Taylor, Darrin -- Waddell, Nick -- Wood, Scott -- Xu, Qinying -- Wu, Jianmin -- Pinese, Mark -- Cowley, Mark J -- Lee, Hong C -- Jones, Marc D -- Nagrial, Adnan M -- Humphris, Jeremy -- Chantrill, Lorraine A -- Chin, Venessa -- Steinmann, Angela M -- Mawson, Amanda -- Humphrey, Emily S -- Colvin, Emily K -- Chou, Angela -- Scarlett, Christopher J -- Pinho, Andreia V -- Giry-Laterriere, Marc -- Rooman, Ilse -- Samra, Jaswinder S -- Kench, James G -- Pettitt, Jessica A -- Merrett, Neil D -- Toon, Christopher -- Epari, Krishna -- Nguyen, Nam Q -- Barbour, Andrew -- Zeps, Nikolajs -- Jamieson, Nigel B -- Graham, Janet S -- Niclou, Simone P -- Bjerkvig, Rolf -- Grutzmann, Robert -- Aust, Daniela -- Hruban, Ralph H -- Maitra, Anirban -- Iacobuzio-Donahue, Christine A -- Wolfgang, Christopher L -- Morgan, Richard A -- Lawlor, Rita T -- Corbo, Vincenzo -- Bassi, Claudio -- Falconi, Massimo -- Zamboni, Giuseppe -- Tortora, Giampaolo -- Tempero, Margaret A -- Australian Pancreatic Cancer Genome Initiative -- Gill, Anthony J -- Eshleman, James R -- Pilarsky, Christian -- Scarpa, Aldo -- Musgrove, Elizabeth A -- Pearson, John V -- Biankin, Andrew V -- Grimmond, Sean M -- 103721/Wellcome Trust/United Kingdom -- C29717/A17263/Cancer Research UK/United Kingdom -- C596/A18076/Cancer Research UK/United Kingdom -- P30 CA006973/CA/NCI NIH HHS/ -- P30 CA016672/CA/NCI NIH HHS/ -- P50 CA062924/CA/NCI NIH HHS/ -- P50 CA62924/CA/NCI NIH HHS/ -- England -- Nature. 2015 Feb 26;518(7540):495-501. doi: 10.1038/nature14169.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Queensland Centre for Medical Genomics, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia [2] QIMR Berghofer Medical Research Institute, Herston Road, Brisbane 4006, Australia. ; 1] The Kinghorn Cancer Centre, Cancer Division, Garvan Institute of Medical Research, University of New South Wales, 384 Victoria St, Darlinghurst, Sydney, New South Wales 2010, Australia [2] St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, New South Wales 2010, Australia. ; Queensland Centre for Medical Genomics, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia. ; 1] The Kinghorn Cancer Centre, Cancer Division, Garvan Institute of Medical Research, University of New South Wales, 384 Victoria St, Darlinghurst, Sydney, New South Wales 2010, Australia [2] Department of Surgery, Bankstown Hospital, Eldridge Road, Bankstown, Sydney, New South Wales 2200, Australia [3] South Western Sydney Clinical School, Faculty of Medicine, University of New South Wales, Liverpool, New South Wales 2170, Australia [4] Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK. ; 1] Queensland Centre for Medical Genomics, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia [2] Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK. ; The Kinghorn Cancer Centre, Cancer Division, Garvan Institute of Medical Research, University of New South Wales, 384 Victoria St, Darlinghurst, Sydney, New South Wales 2010, Australia. ; 1] The Kinghorn Cancer Centre, Cancer Division, Garvan Institute of Medical Research, University of New South Wales, 384 Victoria St, Darlinghurst, Sydney, New South Wales 2010, Australia [2] Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK. ; 1] The Kinghorn Cancer Centre, Cancer Division, Garvan Institute of Medical Research, University of New South Wales, 384 Victoria St, Darlinghurst, Sydney, New South Wales 2010, Australia [2] Department of Anatomical Pathology, St Vincent's Hospital, Sydney, New South Wales 2010, Australia. ; 1] The Kinghorn Cancer Centre, Cancer Division, Garvan Institute of Medical Research, University of New South Wales, 384 Victoria St, Darlinghurst, Sydney, New South Wales 2010, Australia [2] School of Environmental &Life Sciences, University of Newcastle, Ourimbah, New South Wales 2258, Australia. ; 1] Department of Surgery, Royal North Shore Hospital, St Leonards, Sydney, New South Wales 2065, Australia [2] University of Sydney, Sydney, New South Wales 2006, Australia. ; 1] The Kinghorn Cancer Centre, Cancer Division, Garvan Institute of Medical Research, University of New South Wales, 384 Victoria St, Darlinghurst, Sydney, New South Wales 2010, Australia [2] University of Sydney, Sydney, New South Wales 2006, Australia [3] Tissue Pathology and Diagnostic Oncology, Royal Prince Alfred Hospital, Camperdown, New South Wales 2050, Australia. ; 1] Department of Surgery, Bankstown Hospital, Eldridge Road, Bankstown, Sydney, New South Wales 2200, Australia [2] School of Medicine, University of Western Sydney, Penrith, New South Wales 2175, Australia. ; Department of Surgery, Fremantle Hospital, Alma Street, Fremantle, Western Australia 6160, Australia. ; Department of Gastroenterology, Royal Adelaide Hospital, North Terrace, Adelaide, South Australia 5000, Australia. ; Department of Surgery, Princess Alexandra Hospital, Ipswich Rd, Woollongabba, Queensland 4102, Australia. ; 1] School of Surgery M507, University of Western Australia, 35 Stirling Highway, Nedlands 6009, Australia [2] St John of God Pathology, 12 Salvado Rd, Subiaco, Western Australia 6008, Australia [3] Bendat Family Comprehensive Cancer Centre, St John of God Subiaco Hospital, Subiaco, Western Australia 6008, Australia. ; 1] Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK [2] Academic Unit of Surgery, School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Glasgow G4 OSF, UK [3] West of Scotland Pancreatic Unit, Glasgow Royal Infirmary, Glasgow G31 2ER, UK. ; 1] Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK [2] Department of Medical Oncology, Beatson West of Scotland Cancer Centre, 1053 Great Western Road, Glasgow G12 0YN, UK. ; Norlux Neuro-Oncology Laboratory, CRP-Sante Luxembourg, 84 Val Fleuri, L-1526, Luxembourg. ; Norlux Neuro-Oncology, Department of Biomedicine, University of Bergen, Jonas Lies vei 91, N-5019 Bergen, Norway. ; Departments of Surgery and Pathology, TU Dresden, Fetscherstr. 74, 01307 Dresden, Germany. ; Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, the Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA. ; Departments of Pathology and Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston Texas 77030, USA. ; The David M. Rubenstein Pancreatic Cancer Research Center and Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Department of Surgery, The Sol Goldman Pancreatic Cancer Research Center, the Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA. ; 1] ARC-NET Centre for Applied Research on Cancer, University and Hospital Trust of Verona, Verona 37134, Italy [2] Department of Pathology and Diagnostics, University of Verona, Verona 37134, Italy. ; ARC-NET Centre for Applied Research on Cancer, University and Hospital Trust of Verona, Verona 37134, Italy. ; Department of Surgery and Oncology, Pancreas Institute, University and Hospital Trust of Verona, Verona 37134, Italy. ; 1] Department of Surgery and Oncology, Pancreas Institute, University and Hospital Trust of Verona, Verona 37134, Italy [2] Departments of Surgery and Pathology, Ospedale Sacro Cuore Don Calabria Negrar, Verona 37024, Italy. ; 1] Department of Pathology and Diagnostics, University of Verona, Verona 37134, Italy [2] Departments of Surgery and Pathology, Ospedale Sacro Cuore Don Calabria Negrar, Verona 37024, Italy. ; Department of Oncology, University and Hospital Trust of Verona, Verona 37134, Italy. ; Division of Hematology and Oncology, University of California, San Francisco, California 94122, USA. ; 1] The Kinghorn Cancer Centre, Cancer Division, Garvan Institute of Medical Research, University of New South Wales, 384 Victoria St, Darlinghurst, Sydney, New South Wales 2010, Australia [2] University of Sydney, Sydney, New South Wales 2006, Australia. ; Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25719666" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/drug therapy/genetics ; Animals ; Carcinoma, Pancreatic Ductal/drug therapy/genetics ; *DNA Mutational Analysis ; DNA Repair/genetics ; Female ; Genes, BRCA1 ; Genes, BRCA2 ; Genetic Markers/genetics ; Genome, Human/*genetics ; Genomic Instability/genetics ; *Genomics ; Genotype ; Humans ; Mice ; Mutation/*genetics ; Pancreatic Neoplasms/classification/drug therapy/*genetics ; Platinum/pharmacology ; Point Mutation/genetics ; Poly(ADP-ribose) Polymerase Inhibitors ; Xenograft Model Antitumor Assays
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  • 140
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2015-10-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wald, Chelsea -- England -- Nature. 2015 Oct 8;526(7572):S2-3. doi: 10.1038/526S2a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26444372" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/physiology ; Animals ; Art ; *Beauty ; Brain/*physiology ; Esthetics/*psychology ; Face/anatomy & histology ; Female ; Fertility/physiology ; Humans ; Male ; Mating Preference, Animal ; Mice ; Neurosciences/trends ; Nucleus Accumbens/physiology ; Pleasure ; Prejudice ; Punishment ; Reward ; Salaries and Fringe Benefits ; Sex Characteristics ; Trust
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    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 141
    Publication Date: 2015-04-30
    Description: Inflammation is a beneficial host response to infection but can contribute to inflammatory disease if unregulated. The Th17 lineage of T helper (Th) cells can cause severe human inflammatory diseases. These cells exhibit both instability (they can cease to express their signature cytokine, IL-17A) and plasticity (they can start expressing cytokines typical of other lineages) upon in vitro re-stimulation. However, technical limitations have prevented the transcriptional profiling of pre- and post-conversion Th17 cells ex vivo during immune responses. Thus, it is unknown whether Th17 cell plasticity merely reflects change in expression of a few cytokines, or if Th17 cells physiologically undergo global genetic reprogramming driving their conversion from one T helper cell type to another, a process known as transdifferentiation. Furthermore, although Th17 cell instability/plasticity has been associated with pathogenicity, it is unknown whether this could present a therapeutic opportunity, whereby formerly pathogenic Th17 cells could adopt an anti-inflammatory fate. Here we used two new fate-mapping mouse models to track Th17 cells during immune responses to show that CD4(+) T cells that formerly expressed IL-17A go on to acquire an anti-inflammatory phenotype. The transdifferentiation of Th17 into regulatory T cells was illustrated by a change in their signature transcriptional profile and the acquisition of potent regulatory capacity. Comparisons of the transcriptional profiles of pre- and post-conversion Th17 cells also revealed a role for canonical TGF-beta signalling and consequently for the aryl hydrocarbon receptor (AhR) in conversion. Thus, Th17 cells transdifferentiate into regulatory cells, and contribute to the resolution of inflammation. Our data suggest that Th17 cell instability and plasticity is a therapeutic opportunity for inflammatory diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498984/" 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/PMC4498984/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gagliani, Nicola -- Amezcua Vesely, Maria Carolina -- Iseppon, Andrea -- Brockmann, Leonie -- Xu, Hao -- Palm, Noah W -- de Zoete, Marcel R -- Licona-Limon, Paula -- Paiva, Ricardo S -- Ching, Travers -- Weaver, Casey -- Zi, Xiaoyuan -- Pan, Xinghua -- Fan, Rong -- Garmire, Lana X -- Cotton, Matthew J -- Drier, Yotam -- Bernstein, Bradley -- Geginat, Jens -- Stockinger, Brigitta -- Esplugues, Enric -- Huber, Samuel -- Flavell, Richard A -- K01 ES025434/ES/NIEHS NIH HHS/ -- K01ES025434/ES/NIEHS NIH HHS/ -- P20 GM103457/GM/NIGMS NIH HHS/ -- P30 DK045735/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Jul 9;523(7559):221-5. doi: 10.1038/nature14452. Epub 2015 Apr 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunobiology, School of Medicine, Yale University, New Haven, 06520, USA. ; Medizinische Klinik und Poliklinik, Universitatsklinikum Hamburg-Eppendorf, Hamburg 20246, Germany. ; 1] Department of Immunobiology, School of Medicine, Yale University, New Haven, 06520, USA [2] Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; 1] Department of Immunobiology, School of Medicine, Yale University, New Haven, 06520, USA [2] Departamento de Biologia Celular y del Desarrollo, Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico, D.F. Mexico 04510, Mexico (P.L.-L.); Department of Cell Biology, Second Military Medical University, Shanghai 200433, China (X.Z.). ; University of Hawaii Cancer Center, Manoa 96813, USA. ; Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA. ; 1] Department of Biomedical Engineering, Yale University, New Haven, 06520, USA [2] Departamento de Biologia Celular y del Desarrollo, Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico, D.F. Mexico 04510, Mexico (P.L.-L.); Department of Cell Biology, Second Military Medical University, Shanghai 200433, China (X.Z.). ; Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Department of Biomedical Engineering, Yale University, New Haven, 06520, USA. ; Howard Hughes Medical Institute and Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA. ; Istituto Nazionale di Genetica Molecolare "Romeo ed Enrica Invernizzi", Milan 20122, Italy. ; Division of Molecular Immunology, MRC National Institute for Medical Research, Mill Hill, London NW7 1AA, UK. ; Immunology Institute, Mount Sinai School of Medicine, Icahn Medical Institute, New York, New York, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25924064" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Transdifferentiation ; Female ; Gene Expression Profiling ; Gene Expression Regulation ; Helminthiasis/immunology ; Male ; Mice ; Nippostrongylus/immunology ; Staphylococcal Infections/immunology ; Staphylococcus aureus/immunology ; T-Lymphocytes, Regulatory/*cytology/*immunology ; Th17 Cells/*cytology/*immunology
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  • 142
    Publication Date: 2015-08-08
    Description: The source of new hepatocytes in the uninjured liver has remained an open question. By lineage tracing using the Wnt-responsive gene Axin2 in mice, we identify a population of proliferating and self-renewing cells adjacent to the central vein in the liver lobule. These pericentral cells express the early liver progenitor marker Tbx3, are diploid, and thereby differ from mature hepatocytes, which are mostly polyploid. The descendants of pericentral cells differentiate into Tbx3-negative, polyploid hepatocytes, and can replace all hepatocytes along the liver lobule during homeostatic renewal. Adjacent central vein endothelial cells provide Wnt signals that maintain the pericentral cells, thereby constituting the niche. Thus, we identify a cell population in the liver that subserves homeostatic hepatocyte renewal, characterize its anatomical niche, and identify molecular signals that regulate its activity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4589224/" 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/PMC4589224/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Bruce -- Zhao, Ludan -- Fish, Matt -- Logan, Catriona Y -- Nusse, Roel -- F32DK091005/DK/NIDDK NIH HHS/ -- K08 DK101603/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Aug 13;524(7564):180-5. doi: 10.1038/nature14863. Epub 2015 Aug 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Developmental Biology, Howard Hughes Medical Institute, Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California 94305, USA [2] Department of Medicine and Liver Center, University of California San Francisco, San Francisco, California 94143, USA. ; Department of Developmental Biology, Howard Hughes Medical Institute, Stanford Institute for Stem Cell Biology and Regenerative 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/26245375" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axin Protein/*metabolism ; Biomarkers/metabolism ; Cell Lineage ; Cell Proliferation ; Clone Cells/cytology/metabolism ; *Diploidy ; Endothelial Cells/metabolism ; Female ; Hepatocytes/*cytology/*metabolism ; *Homeostasis ; Liver/blood supply/*cytology ; Male ; Mice ; Polyploidy ; Regeneration ; Staining and Labeling ; Stem Cell Niche/physiology ; Stem Cells/cytology/metabolism ; T-Box Domain Proteins/deficiency/metabolism ; Time Factors ; Veins/cytology/metabolism ; Wnt Signaling Pathway
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  • 143
    Publication Date: 2015-07-01
    Description: The clinical course of autoimmune and infectious disease varies greatly, even between individuals with the same condition. An understanding of the molecular basis for this heterogeneity could lead to significant improvements in both monitoring and treatment. During chronic infection the process of T-cell exhaustion inhibits the immune response, facilitating viral persistence. Here we show that a transcriptional signature reflecting CD8 T-cell exhaustion is associated with poor clearance of chronic viral infection, but conversely predicts better prognosis in multiple autoimmune diseases. The development of CD8 T-cell exhaustion during chronic infection is driven both by persistence of antigen and by a lack of accessory 'help' signals. In autoimmunity, we find that where evidence of CD4 T-cell co-stimulation is pronounced, that of CD8 T-cell exhaustion is reduced. We can reproduce the exhaustion signature by modifying the balance of persistent stimulation of T-cell antigen receptors and specific CD2-induced co-stimulation provided to human CD8 T cells in vitro, suggesting that each process plays a role in dictating outcome in autoimmune disease. The 'non-exhausted' T-cell state driven by CD2-induced co-stimulation is reduced by signals through the exhaustion-associated inhibitory receptor PD-1, suggesting that induction of exhaustion may be a therapeutic strategy in autoimmune and inflammatory disease. Using expression of optimal surrogate markers of co-stimulation/exhaustion signatures in independent data sets, we confirm an association with good clinical outcome or response to therapy in infection (hepatitis C virus) and vaccination (yellow fever, malaria, influenza), but poor outcome in autoimmune and inflammatory disease (type 1 diabetes, anti-neutrophil cytoplasmic antibody-associated vasculitis, systemic lupus erythematosus, idiopathic pulmonary fibrosis and dengue haemorrhagic fever). Thus, T-cell exhaustion plays a central role in determining outcome in autoimmune disease and targeted manipulation of this process could lead to new therapeutic opportunities.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4623162/" 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/PMC4623162/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McKinney, Eoin F -- Lee, James C -- Jayne, David R W -- Lyons, Paul A -- Smith, Kenneth G C -- 079895/Wellcome Trust/United Kingdom -- 083650/Wellcome Trust/United Kingdom -- 083650/Z/07/Z/Wellcome Trust/United Kingdom -- 094227/Wellcome Trust/United Kingdom -- 094227/Z/10/Z/Wellcome Trust/United Kingdom -- 100140/Wellcome Trust/United Kingdom -- 104064/Wellcome Trust/United Kingdom -- 104064/Z/14/Z/Wellcome Trust/United Kingdom -- England -- Nature. 2015 Jul 30;523(7562):612-6. doi: 10.1038/nature14468. Epub 2015 Jun 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Medicine, University of Cambridge School of Clinical Medicine, Addenbrooke's Hospital, Hills Road, Cambridge CB2 0QQ, UK [2] Cambridge Institute for Medical Research, University of Cambridge, Cambridge Biomedical Campus, Cambridge CB2 0XY, UK. ; Department of Medicine, University of Cambridge School of Clinical Medicine, Addenbrooke's Hospital, Hills Road, Cambridge CB2 0QQ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26123020" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Neutrophil Cytoplasmic Antibody-Associated ; Vasculitis/genetics/immunology/pathology ; Antigens, CD2/immunology ; Autoimmune Diseases/genetics/*immunology/pathology ; Autoimmunity/genetics/immunology ; CD4-Positive T-Lymphocytes/*immunology/metabolism ; CD8-Positive T-Lymphocytes/*immunology/metabolism/*pathology ; Humans ; Infection/genetics/*immunology/pathology/virology ; Inflammation/immunology/pathology/virology ; Inflammatory Bowel Diseases/genetics/immunology/pathology ; Lupus Erythematosus, Systemic/genetics/immunology/pathology ; Mice ; Phenotype ; Programmed Cell Death 1 Receptor/immunology/metabolism ; Receptors, Antigen, T-Cell/immunology ; Receptors, Interleukin-7/immunology/metabolism ; Transcriptome
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  • 144
    Publication Date: 2015-11-19
    Description: Prevailing dogma holds that cell-cell communication through Notch ligands and receptors determines binary cell fate decisions during progenitor cell divisions, with differentiated lineages remaining fixed. Mucociliary clearance in mammalian respiratory airways depends on secretory cells (club and goblet) and ciliated cells to produce and transport mucus. During development or repair, the closely related Jagged ligands (JAG1 and JAG2) induce Notch signalling to determine the fate of these lineages as they descend from a common proliferating progenitor. In contrast to such situations in which cell fate decisions are made in rapidly dividing populations, cells of the homeostatic adult airway epithelium are long-lived, and little is known about the role of active Notch signalling under such conditions. To disrupt Jagged signalling acutely in adult mammals, here we generate antibody antagonists that selectively target each Jagged paralogue, and determine a crystal structure that explains selectivity. We show that acute Jagged blockade induces a rapid and near-complete loss of club cells, with a concomitant gain in ciliated cells, under homeostatic conditions without increased cell death or division. Fate analyses demonstrate a direct conversion of club cells to ciliated cells without proliferation, meeting a conservative definition of direct transdifferentiation. Jagged inhibition also reversed goblet cell metaplasia in a preclinical asthma model, providing a therapeutic foundation. Our discovery that Jagged antagonism relieves a blockade of cell-to-cell conversion unveils unexpected plasticity, and establishes a model for Notch regulation of transdifferentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lafkas, Daniel -- Shelton, Amy -- Chiu, Cecilia -- de Leon Boenig, Gladys -- Chen, Yongmei -- Stawicki, Scott S -- Siltanen, Christian -- Reichelt, Mike -- Zhou, Meijuan -- Wu, Xiumin -- Eastham-Anderson, Jeffrey -- Moore, Heather -- Roose-Girma, Meron -- Chinn, Yvonne -- Hang, Julie Q -- Warming, Soren -- Egen, Jackson -- Lee, Wyne P -- Austin, Cary -- Wu, Yan -- Payandeh, Jian -- Lowe, John B -- Siebel, Christian W -- England -- Nature. 2015 Dec 3;528(7580):127-31. doi: 10.1038/nature15715. Epub 2015 Nov 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Discovery Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Antibody Engineering, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Structural Biology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Pathology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Translational Immunology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Discovery Immunology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Molecular Biology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Departments of Protein Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26580007" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/immunology/pharmacology/*therapeutic use ; Asthma/drug therapy/metabolism/pathology ; Calcium-Binding Proteins/antagonists & inhibitors/immunology/metabolism ; Cell Death/drug effects ; Cell Division/drug effects ; Cell Lineage/drug effects ; Cell Tracking ; *Cell Transdifferentiation/drug effects ; Cilia/metabolism ; Disease Models, Animal ; Female ; Goblet Cells/cytology/drug effects/pathology ; Homeostasis/drug effects ; Humans ; Intercellular Signaling Peptides and Proteins/immunology/metabolism ; Ligands ; Lung/*cytology/drug effects/*metabolism ; Male ; Membrane Proteins/antagonists & inhibitors/immunology/metabolism ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Receptors, Notch/*metabolism ; Signal Transduction/drug effects
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  • 145
    Publication Date: 2016-01-21
    Description: Bacteria express many small RNAs for which the regulatory roles in pathogenesis have remained poorly understood due to a paucity of robust phenotypes in standard virulence assays. Here we use a generic 'dual RNA-seq' approach to profile RNA expression simultaneously in pathogen and host during Salmonella enterica serovar Typhimurium infection and reveal the molecular impact of bacterial riboregulators. We identify a PhoP-activated small RNA, PinT, which upon bacterial internalization temporally controls the expression of both invasion-associated effectors and virulence genes required for intracellular survival. This riboregulatory activity causes pervasive changes in coding and noncoding transcripts of the host. Interspecies correlation analysis links PinT to host cell JAK-STAT signalling, and we identify infection-specific alterations in multiple long noncoding RNAs. Our study provides a paradigm for a sensitive RNA-based analysis of intracellular bacterial pathogens and their hosts without physical separation, as well as a new discovery route for hidden functions of pathogen genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Westermann, Alexander J -- Forstner, Konrad U -- Amman, Fabian -- Barquist, Lars -- Chao, Yanjie -- Schulte, Leon N -- Muller, Lydia -- Reinhardt, Richard -- Stadler, Peter F -- Vogel, Jorg -- England -- Nature. 2016 Jan 28;529(7587):496-501. doi: 10.1038/nature16547. Epub 2016 Jan 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Wurzburg, RNA Biology Group, Institute for Molecular Infection Biology, Josef-Schneider-Strasse 2/D15, D-97080 Wurzburg, Germany. ; University of Wurzburg, Core Unit Systems Medicine, Josef-Schneider-Strasse 2/D15, D-97080 Wurzburg, Germany. ; University of Leipzig, Department of Computer Science and Interdisciplinary Center for Bioinformatics, Hartelstrasse 16-18, D-04107 Leipzig, Germany. ; University of Vienna, Theoretical Biochemistry Group, Institute for Theoretical Chemistry, Wahringer Strasse 17, A-1090 Vienna, Austria. ; Max Planck Genome Centre Cologne, Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, D-50829 Cologne, Germany. ; Max Planck Institute for Mathematics in the Sciences, Inselstrasse 22, D-04103 Leipzig, Germany. ; Santa Fe Institute, 1399 Hyde Park Rd, Santa Fe, New Mexico 87501, USA. ; Research Centre for Infectious Diseases (ZINF), University of Wurzburg, D-97070 Wurzburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26789254" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/metabolism ; Female ; Gene Expression Regulation/*genetics ; Genes, Bacterial/genetics ; HeLa Cells ; Host-Pathogen Interactions/*genetics ; Humans ; Janus Kinases/metabolism ; Mice ; Microbial Viability/genetics ; RNA, Bacterial/*genetics/metabolism ; RNA, Messenger/genetics/metabolism ; RNA, Untranslated/*genetics/metabolism ; STAT Transcription Factors/metabolism ; Salmonella typhimurium/cytology/*genetics/pathogenicity ; Signal Transduction/genetics ; Transcriptome/genetics ; Virulence/genetics
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  • 146
    Publication Date: 2016-03-24
    Description: Developmental disabilities, including attention-deficit hyperactivity disorder (ADHD), intellectual disability (ID), and autism spectrum disorders (ASD), affect one in six children in the USA. Recently, gene mutations in patched domain containing 1 (PTCHD1) have been found in ~1% of patients with ID and ASD. Individuals with PTCHD1 deletion show symptoms of ADHD, sleep disruption, hypotonia, aggression, ASD, and ID. Although PTCHD1 is probably critical for normal development, the connection between its deletion and the ensuing behavioural defects is poorly understood. Here we report that during early post-natal development, mouse Ptchd1 is selectively expressed in the thalamic reticular nucleus (TRN), a group of GABAergic neurons that regulate thalamocortical transmission, sleep rhythms, and attention. Ptchd1 deletion attenuates TRN activity through mechanisms involving small conductance calcium-dependent potassium currents (SK). TRN-restricted deletion of Ptchd1 leads to attention deficits and hyperactivity, both of which are rescued by pharmacological augmentation of SK channel activity. Global Ptchd1 deletion recapitulates learning impairment, hyper-aggression, and motor defects, all of which are insensitive to SK pharmacological targeting and not found in the TRN-restricted deletion mouse. This study maps clinically relevant behavioural phenotypes onto TRN dysfunction in a human disease model, while also identifying molecular and circuit targets for intervention.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4875756/" 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/PMC4875756/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wells, Michael F -- Wimmer, Ralf D -- Schmitt, L Ian -- Feng, Guoping -- Halassa, Michael M -- F31 MH098641/MH/NIMH NIH HHS/ -- R00 NS078115/NS/NINDS NIH HHS/ -- R01 MH097104/MH/NIMH NIH HHS/ -- R01 MH107680/MH/NIMH NIH HHS/ -- R01MH097104/MH/NIMH NIH HHS/ -- R01MH10768/MH/NIMH NIH HHS/ -- England -- Nature. 2016 Apr 7;532(7597):58-63. doi: 10.1038/nature17427. Epub 2016 Mar 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Duke University Medical Center, Durham, North Carolina 27710, USA. ; McGovern Institute for Brain Research, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Neuroscience Institute, New York University Langone Medical Center, New York, New York 10016, USA. ; Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, New York 10016, USA. ; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA. ; Department of Psychiatry, New York University Langone Medical Center, New York, New York 10016, USA. ; Center for Neural Science, New York University, New York, New York 1003, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27007844" target="_blank"〉PubMed〈/a〉
    Keywords: Aggression ; Animals ; Animals, Newborn ; Attention ; Attention Deficit Disorder with ; Hyperactivity/genetics/*physiopathology/*psychology ; Behavior, Animal ; Disease Models, Animal ; Electric Conductivity ; Female ; GABAergic Neurons/metabolism/pathology ; *Gene Deletion ; Humans ; Learning Disorders/genetics/physiopathology ; Male ; Membrane Proteins/*deficiency/*genetics/metabolism ; Mice ; Mice, Knockout ; Motor Disorders/genetics/physiopathology ; Neural Inhibition ; Potassium Channels, Calcium-Activated/metabolism ; Sleep ; Sleep Deprivation/genetics/physiopathology ; Thalamic Nuclei/pathology/*physiopathology
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  • 147
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    Nature Publishing Group (NPG)
    Publication Date: 2016-05-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Owens, Brian -- England -- Nature. 2016 May 11;533(7602):S71-2. doi: 10.1038/533S71a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27167398" target="_blank"〉PubMed〈/a〉
    Keywords: *Academies and Institutes/economics ; *Access to Information ; Animals ; *Diffusion of Innovation ; Drug Industry/economics/methods ; Humans ; *Information Dissemination ; Mice ; Neurosciences/economics/manpower/*methods/organization & administration ; Patents as Topic ; Public Sector/economics ; Public-Private Sector Partnerships ; Quebec
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  • 148
    Publication Date: 2016-01-07
    Description: Endothelial cells (ECs) are plastic cells that can switch between growth states with different bioenergetic and biosynthetic requirements. Although quiescent in most healthy tissues, ECs divide and migrate rapidly upon proangiogenic stimulation. Adjusting endothelial metabolism to the growth state is central to normal vessel growth and function, yet it is poorly understood at the molecular level. Here we report that the forkhead box O (FOXO) transcription factor FOXO1 is an essential regulator of vascular growth that couples metabolic and proliferative activities in ECs. Endothelial-restricted deletion of FOXO1 in mice induces a profound increase in EC proliferation that interferes with coordinated sprouting, thereby causing hyperplasia and vessel enlargement. Conversely, forced expression of FOXO1 restricts vascular expansion and leads to vessel thinning and hypobranching. We find that FOXO1 acts as a gatekeeper of endothelial quiescence, which decelerates metabolic activity by reducing glycolysis and mitochondrial respiration. Mechanistically, FOXO1 suppresses signalling by MYC (also known as c-MYC), a powerful driver of anabolic metabolism and growth. MYC ablation impairs glycolysis, mitochondrial function and proliferation of ECs while its EC-specific overexpression fuels these processes. Moreover, restoration of MYC signalling in FOXO1-overexpressing endothelium normalizes metabolic activity and branching behaviour. Our findings identify FOXO1 as a critical rheostat of vascular expansion and define the FOXO1-MYC transcriptional network as a novel metabolic checkpoint during endothelial growth and proliferation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilhelm, Kerstin -- Happel, Katharina -- Eelen, Guy -- Schoors, Sandra -- Oellerich, Mark F -- Lim, Radiance -- Zimmermann, Barbara -- Aspalter, Irene M -- Franco, Claudio A -- Boettger, Thomas -- Braun, Thomas -- Fruttiger, Marcus -- Rajewsky, Klaus -- Keller, Charles -- Bruning, Jens C -- Gerhardt, Holger -- Carmeliet, Peter -- Potente, Michael -- K08CA090438/CA/NCI NIH HHS/ -- Cancer Research UK/United Kingdom -- England -- Nature. 2016 Jan 14;529(7585):216-20. doi: 10.1038/nature16498. Epub 2016 Jan 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Angiogenesis &Metabolism Laboratory, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany. ; Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, Department of Oncology, University of Leuven, Leuven 3000, Belgium. ; Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, VIB, Leuven 3000, Belgium. ; Vascular Biology Laboratory, London Research Institute, Cancer Research UK, London WC2A 3LY, UK. ; Vascular Morphogenesis Laboratory, Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Lisbon 1649-028, Portugal. ; Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany. ; UCL Institute of Ophthalmology, University College London, London EC1V 9EL, UK. ; Max Delbruck Center for Molecular Medicine (MDC), D-13125 Berlin, Germany. ; Children's Cancer Therapy Development Institute, Beaverton, Oregon 97005, USA. ; Max Planck Institute for Metabolism Research, Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), Center for Endocrinology, Diabetes and Preventive Medicine (CEDP), University of Cologne, D-50931 Cologne, Germany. ; Vascular Patterning Laboratory, Vesalius Research Center, VIB and University of Leuven, Leuven 3000, Belgium. ; DZHK (German Center for Cardiovascular Research), partner site Berlin, D-13347 Berlin, Germany. ; Berlin Institute of Health (BIH), D-10117 Berlin, Germany. ; International Institute of Molecular and Cell Biology, 02-109 Warsaw, Poland. ; DZHK (German Center for Cardiovascular Research), partner site Frankfurt Rhine-Main, D-13347 Berlin, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26735015" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Proliferation ; Cell Respiration ; Endothelium, Vascular/cytology/*growth & development/*metabolism ; Female ; Forkhead Transcription Factors/deficiency/genetics/*metabolism ; Glycolysis ; Human Umbilical Vein Endothelial Cells/cytology/metabolism ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Proto-Oncogene Proteins c-myc/deficiency/genetics/metabolism ; Signal Transduction
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  • 149
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    Nature Publishing Group (NPG)
    Publication Date: 2016-04-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willyard, Cassandra -- England -- Nature. 2016 Apr 14;532(7598):166-8. doi: 10.1038/532166a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27075079" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antineoplastic Agents/economics/therapeutic use ; Antineoplastic Combined Chemotherapy Protocols/economics/*therapeutic use ; Clinical Trials as Topic ; DNA Mutational Analysis ; Dose-Response Relationship, Drug ; Drug Resistance, Neoplasm/*drug effects/genetics ; *Evolution, Molecular ; Female ; Humans ; Immunotherapy, Adoptive/economics/trends ; Mice ; Molecular Targeted Therapy/economics/*methods/trends ; Mutation/*genetics ; Neoplasm Metastasis/drug therapy/genetics/pathology ; Neoplasm Recurrence, Local/chemically induced/genetics/prevention & control ; Neoplasms/*drug therapy/*genetics/pathology ; Selection, Genetic/*drug effects/genetics ; Tumor Microenvironment/drug effects
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  • 150
    Publication Date: 2016-04-14
    Description: Bone marrow endothelial cells (BMECs) form a network of blood vessels that regulate both leukocyte trafficking and haematopoietic stem and progenitor cell (HSPC) maintenance. However, it is not clear how BMECs balance these dual roles, and whether these events occur at the same vascular site. We found that mammalian bone marrow stem cell maintenance and leukocyte trafficking are regulated by distinct blood vessel types with different permeability properties. Less permeable arterial blood vessels maintain haematopoietic stem cells in a low reactive oxygen species (ROS) state, whereas the more permeable sinusoids promote HSPC activation and are the exclusive site for immature and mature leukocyte trafficking to and from the bone marrow. A functional consequence of high permeability of blood vessels is that exposure to blood plasma increases bone marrow HSPC ROS levels, augmenting their migration and differentiation, while compromising their long-term repopulation and survival. These findings may have relevance for clinical haematopoietic stem cell transplantation and mobilization protocols.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Itkin, Tomer -- Gur-Cohen, Shiri -- Spencer, Joel A -- Schajnovitz, Amir -- Ramasamy, Saravana K -- Kusumbe, Anjali P -- Ledergor, Guy -- Jung, Yookyung -- Milo, Idan -- Poulos, Michael G -- Kalinkovich, Alexander -- Ludin, Aya -- Kollet, Orit -- Shakhar, Guy -- Butler, Jason M -- Rafii, Shahin -- Adams, Ralf H -- Scadden, David T -- Lin, Charles P -- Lapidot, Tsvee -- EB017274/EB/NIBIB NIH HHS/ -- HL100402/HL/NHLBI NIH HHS/ -- R01 EB017274/EB/NIBIB NIH HHS/ -- U01 HL100402/HL/NHLBI NIH HHS/ -- England -- Nature. 2016 Apr 21;532(7599):323-8. doi: 10.1038/nature17624. Epub 2016 Apr 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, The Weizmann Institute of Science, Rehovot 76100, Israel. ; Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA. ; Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA. ; Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; Harvard Stem Cell Institute, Cambridge, Massachusetts 02114, USA. ; Center for Regenerative Medicine and Cancer Center, Massachusetts General Hospital, Boston, Massachusetts 02114, USA. ; Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis and Faculty of Medicine, University of Munster, D-48149 Munster, Germany. ; Internal Medicine Department, Tel-Aviv Sourasky Medical Center, Tel-Aviv 64239, Israel. ; Department of Genetic Medicine, Weill Cornell Medical College, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27074509" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Ly/metabolism ; Arteries/cytology/physiology ; Blood Vessels/*cytology/*physiology ; Bone Marrow/*blood supply ; Bone Marrow Cells/cytology ; Cell Differentiation ; Cell Movement ; Cell Self Renewal ; Cell Survival ; Chemokine CXCL12/metabolism ; Endothelial Cells/physiology ; Female ; *Hematopoiesis ; Hematopoietic Stem Cell Mobilization ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/cytology ; Leukocytes/cytology ; Male ; Membrane Proteins/metabolism ; Mice ; Mice, Inbred C57BL ; Nestin/metabolism ; Pericytes/physiology ; Permeability ; Plasma/metabolism ; Reactive Oxygen Species/metabolism ; Receptors, CXCR4/metabolism
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  • 151
    Publication Date: 2015-06-25
    Description: Exosomes are lipid-bilayer-enclosed extracellular vesicles that contain proteins and nucleic acids. They are secreted by all cells and circulate in the blood. Specific detection and isolation of cancer-cell-derived exosomes in the circulation is currently lacking. Using mass spectrometry analyses, we identify a cell surface proteoglycan, glypican-1 (GPC1), specifically enriched on cancer-cell-derived exosomes. GPC1(+) circulating exosomes (crExos) were monitored and isolated using flow cytometry from the serum of patients and mice with cancer. GPC1(+) crExos were detected in the serum of patients with pancreatic cancer with absolute specificity and sensitivity, distinguishing healthy subjects and patients with a benign pancreatic disease from patients with early- and late-stage pancreatic cancer. Levels of GPC1(+) crExos correlate with tumour burden and the survival of pre- and post-surgical patients. GPC1(+) crExos from patients and from mice with spontaneous pancreatic tumours carry specific KRAS mutations, and reliably detect pancreatic intraepithelial lesions in mice despite negative signals by magnetic resonance imaging. GPC1(+) crExos may serve as a potential non-invasive diagnostic and screening tool to detect early stages of pancreatic cancer to facilitate possible curative surgical therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Melo, Sonia A -- Luecke, Linda B -- Kahlert, Christoph -- Fernandez, Agustin F -- Gammon, Seth T -- Kaye, Judith -- LeBleu, Valerie S -- Mittendorf, Elizabeth A -- Weitz, Juergen -- Rahbari, Nuh -- Reissfelder, Christoph -- Pilarsky, Christian -- Fraga, Mario F -- Piwnica-Worms, David -- Kalluri, Raghu -- 5U24-CA126577/CA/NCI NIH HHS/ -- CA-151925/CA/NCI NIH HHS/ -- CA-155370/CA/NCI NIH HHS/ -- CA16672/CA/NCI NIH HHS/ -- DK 081576/DK/NIDDK NIH HHS/ -- P30 CA016672/CA/NCI NIH HHS/ -- P30-CA016672/CA/NCI NIH HHS/ -- P30CA016672/CA/NCI NIH HHS/ -- P30CA16672/CA/NCI NIH HHS/ -- P50-CA094056/CA/NCI NIH HHS/ -- R01 CA155370/CA/NCI NIH HHS/ -- R01 DK081576/DK/NIDDK NIH HHS/ -- U01 CA151925/CA/NCI NIH HHS/ -- England -- Nature. 2015 Jul 9;523(7559):177-82. doi: 10.1038/nature14581. Epub 2015 Jun 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Metastasis Research Center, University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA. ; Cancer Epigenetics Laboratory, Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, 33006 Oviedo, Spain. ; Department of Cancer Systems Imaging, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77054, USA. ; Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA. ; Department of Gastrointestinal, Thoracic and Vascular Surgery, Medizinische Fakultat Carl Gustav Carus, Technische Universitat Dresden, Fetscherstr. 74, 01307 Dresden, Germany. ; 1] Cancer Epigenetics Laboratory, Institute of Oncology of Asturias (IUOPA), HUCA, Universidad de Oviedo, 33006 Oviedo, Spain [2] Department of Immunology and Oncology, National Center for Biotechnology, CNB-CSIC, Cantoblanco, 28049 Madrid, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26106858" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomarkers/blood ; Cell Line, Tumor ; Exosomes/genetics/*metabolism ; Female ; *Glypicans/blood/metabolism ; HCT116 Cells ; Humans ; MCF-7 Cells ; Male ; Mice ; NIH 3T3 Cells ; Pancreatic Neoplasms/blood/*diagnosis/pathology ; Proto-Oncogene Proteins/metabolism ; ras Proteins/metabolism
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  • 152
    Publication Date: 2015-09-10
    Description: Dendritic spines are the major loci of synaptic plasticity and are considered as possible structural correlates of memory. Nonetheless, systematic manipulation of specific subsets of spines in the cortex has been unattainable, and thus, the link between spines and memory has been correlational. We developed a novel synaptic optoprobe, AS-PaRac1 (activated synapse targeting photoactivatable Rac1), that can label recently potentiated spines specifically, and induce the selective shrinkage of AS-PaRac1-containing spines. In vivo imaging of AS-PaRac1 revealed that a motor learning task induced substantial synaptic remodelling in a small subset of neurons. The acquired motor learning was disrupted by the optical shrinkage of the potentiated spines, whereas it was not affected by the identical manipulation of spines evoked by a distinct motor task in the same cortical region. Taken together, our results demonstrate that a newly acquired motor skill depends on the formation of a task-specific dense synaptic ensemble.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4634641/" 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/PMC4634641/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hayashi-Takagi, Akiko -- Yagishita, Sho -- Nakamura, Mayumi -- Shirai, Fukutoshi -- Wu, Yi I -- Loshbaugh, Amanda L -- Kuhlman, Brian -- Hahn, Klaus M -- Kasai, Haruo -- GM102924/GM/NIGMS NIH HHS/ -- NS071216/NS/NINDS NIH HHS/ -- R01 GM102924/GM/NIGMS NIH HHS/ -- R21 NS071216/NS/NINDS NIH HHS/ -- England -- Nature. 2015 Sep 17;525(7569):333-8. doi: 10.1038/nature15257. Epub 2015 Sep 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Structural Physiology, Center for Disease Biology and Integrative Medicine, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Tokyo 113-0033. ; PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan. ; CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan. ; Center for Cell Analysis and Modeling, University of Connecticut Health Center, Farmington, Connecticut 06032, USA. ; Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina 27599, USA. ; Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, North Carolina 27599, USA. ; Department of Pharmacology, University of North Carolina, Chapel Hill, North Carolina 27599, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26352471" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dendritic Spines/physiology/radiation effects ; Hippocampus/cytology/physiology/radiation effects ; In Vitro Techniques ; Light ; Long-Term Potentiation/physiology/radiation effects ; Male ; Memory/*physiology/*radiation effects ; Mice ; Molecular Probes ; Motor Cortex/cytology/*physiology/*radiation effects ; Motor Skills/physiology/radiation effects ; Neuronal Plasticity/*physiology/*radiation effects ; Rotarod Performance Test ; Spatio-Temporal Analysis ; Synapses/*physiology/*radiation effects
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  • 153
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    Nature Publishing Group (NPG)
    Publication Date: 2015-11-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smaglik, Paul -- England -- Nature. 2015 Nov 19;527(7578):399-401.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26594719" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptation, Psychological ; Animals ; Disaster Planning ; Emigration and Immigration ; *Laboratories/manpower ; Mice ; Research Personnel/*psychology ; Transients and Migrants/*psychology ; Transportation
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  • 154
    Publication Date: 2016-01-28
    Description: Adeno-associated virus (AAV) vectors are currently the leading candidates for virus-based gene therapies because of their broad tissue tropism, non-pathogenic nature and low immunogenicity. They have been successfully used in clinical trials to treat hereditary diseases such as haemophilia B (ref. 2), and have been approved for treatment of lipoprotein lipase deficiency in Europe. Considerable efforts have been made to engineer AAV variants with novel and biomedically valuable cell tropisms to allow efficacious systemic administration, yet basic aspects of AAV cellular entry are still poorly understood. In particular, the protein receptor(s) required for AAV entry after cell attachment remains unknown. Here we use an unbiased genetic screen to identify proteins essential for AAV serotype 2 (AAV2) infection in a haploid human cell line. The most significantly enriched gene of the screen encodes a previously uncharacterized type I transmembrane protein, KIAA0319L (denoted hereafter as AAV receptor (AAVR)). We characterize AAVR as a protein capable of rapid endocytosis from the plasma membrane and trafficking to the trans-Golgi network. We show that AAVR directly binds to AAV2 particles, and that anti-AAVR antibodies efficiently block AAV2 infection. Moreover, genetic ablation of AAVR renders a wide range of mammalian cell types highly resistant to AAV2 infection. Notably, AAVR serves as a critical host factor for all tested AAV serotypes. The importance of AAVR for in vivo gene delivery is further highlighted by the robust resistance of Aavr(-/-) (also known as Au040320(-/-) and Kiaa0319l(-/-)) mice to AAV infection. Collectively, our data indicate that AAVR is a universal receptor involved in AAV infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pillay, S -- Meyer, N L -- Puschnik, A S -- Davulcu, O -- Diep, J -- Ishikawa, Y -- Jae, L T -- Wosen, J E -- Nagamine, C M -- Chapman, M S -- Carette, J E -- DP2 AI104557/AI/NIAID NIH HHS/ -- R01 GM066875/GM/NIGMS NIH HHS/ -- U19 AI109662/AI/NIAID NIH HHS/ -- England -- Nature. 2016 Feb 4;530(7588):108-12. doi: 10.1038/nature16465. Epub 2016 Jan 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, 299 Campus Drive, Stanford, California 94305, USA. ; Department of Biochemistry and Molecular Biology, School of Medicine, Oregon Health &Science University, 3181 Sam Jackson Park Road, Portland, Oregon 97239-3098, USA. ; Shriners Hospital for Children, 3101 Sam Jackson Park Road, Portland, Oregon 97239, USA. ; Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, Netherlands. ; Department of Comparative Medicine, Stanford University School of Medicine, 287 Campus Drive, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26814968" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/immunology/pharmacology ; Cell Line ; Dependovirus/classification/drug effects/*physiology ; Endocytosis/drug effects ; Female ; Gene Deletion ; Genetic Therapy/methods ; Host Specificity ; Humans ; Male ; Mice ; Parvoviridae Infections/*metabolism/*virology ; Receptors, Cell Surface/antagonists & inhibitors/deficiency/genetics/*metabolism ; Receptors, Virus/antagonists & inhibitors/deficiency/genetics/*metabolism ; *Viral Tropism/drug effects ; Virus Internalization/drug effects ; trans-Golgi Network/drug effects
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  • 155
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    Nature Publishing Group (NPG)
    Publication Date: 2016-03-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McGilvray, Annabel -- England -- Nature. 2016 Mar 3;531(7592):S4-5. doi: 10.1038/531S4a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26934524" target="_blank"〉PubMed〈/a〉
    Keywords: Acetates/pharmacology/therapeutic use ; Aging/blood/drug effects/pathology/*psychology ; Alzheimer Disease/blood/therapy ; Animals ; Anti-Asthmatic Agents/pharmacology/therapeutic use ; Cognition Disorders/pathology/physiopathology/*prevention & control/*therapy ; Estrogens/pharmacology ; Female ; Hippocampus/drug effects/pathology/physiology/physiopathology ; Humans ; Inflammation Mediators/immunology ; Leukotrienes/immunology ; Macaca mulatta ; Male ; Mice ; Neuronal Plasticity/drug effects ; Parkinson Disease/therapy ; Plasma/chemistry/physiology ; Prefrontal Cortex/drug effects/pathology/physiology/physiopathology ; Quinolines/pharmacology/therapeutic use ; Rats ; Rejuvenation/*physiology/*psychology ; Synapses/drug effects/metabolism/pathology
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  • 156
    Publication Date: 2016-04-21
    Description: Our current understanding of immunology was largely defined in laboratory mice, partly because they are inbred and genetically homogeneous, can be genetically manipulated, allow kinetic tissue analyses to be carried out from the onset of disease, and permit the use of tractable disease models. Comparably reductionist experiments are neither technically nor ethically possible in humans. However, there is growing concern that laboratory mice do not reflect relevant aspects of the human immune system, which may account for failures to translate disease treatments from bench to bedside. Laboratory mice live in abnormally hygienic specific pathogen free (SPF) barrier facilities. Here we show that standard laboratory mouse husbandry has profound effects on the immune system and that environmental changes produce mice with immune systems closer to those of adult humans. Laboratory mice--like newborn, but not adult, humans--lack effector-differentiated and mucosally distributed memory T cells. These cell populations were present in free-living barn populations of feral mice and pet store mice with diverse microbial experience, and were induced in laboratory mice after co-housing with pet store mice, suggesting that the environment is involved in the induction of these cells. Altering the living conditions of mice profoundly affected the cellular composition of the innate and adaptive immune systems, resulted in global changes in blood cell gene expression to patterns that more closely reflected the immune signatures of adult humans rather than neonates, altered resistance to infection, and influenced T-cell differentiation in response to a de novo viral infection. These data highlight the effects of environment on the basal immune state and response to infection and suggest that restoring physiological microbial exposure in laboratory mice could provide a relevant tool for modelling immunological events in free-living organisms, including humans.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4871315/" 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/PMC4871315/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beura, Lalit K -- Hamilton, Sara E -- Bi, Kevin -- Schenkel, Jason M -- Odumade, Oludare A -- Casey, Kerry A -- Thompson, Emily A -- Fraser, Kathryn A -- Rosato, Pamela C -- Filali-Mouhim, Ali -- Sekaly, Rafick P -- Jenkins, Marc K -- Vezys, Vaiva -- Haining, W Nicholas -- Jameson, Stephen C -- Masopust, David -- 1R01AI111671/AI/NIAID NIH HHS/ -- R01 AI075168/AI/NIAID NIH HHS/ -- R01 AI084913/AI/NIAID NIH HHS/ -- R01 AI111671/AI/NIAID NIH HHS/ -- R01 AI116678/AI/NIAID NIH HHS/ -- R01AI075168/AI/NIAID NIH HHS/ -- R01AI084913/AI/NIAID NIH HHS/ -- R01AI116678/AI/NIAID NIH HHS/ -- England -- Nature. 2016 Apr 28;532(7600):512-6. doi: 10.1038/nature17655. Epub 2016 Apr 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Immunology, Department of Microbiology and Immunology, University of Minnesota, Minneapolis, Minnesota 55414, USA. ; Center for Immunology, Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota 55414, USA. ; Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Pediatric Hematology and Oncology, Children's Hospital, Boston, Massachusetts 02115, USA. ; Department of Pathology, Case Western Reserve University, Cleveland, Ohio 44106, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27096360" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animal Husbandry/*methods ; Animals ; Animals, Laboratory/*immunology ; Animals, Wild/*immunology ; Cell Differentiation ; *Environment ; Environmental Exposure ; Female ; Humans ; Immune System/*immunology ; Immunity/*immunology ; Immunity, Innate/immunology ; Immunologic Memory ; Infant, Newborn ; Male ; Mice ; *Models, Animal ; Phenotype ; Specific Pathogen-Free Organisms ; T-Lymphocytes/cytology/immunology ; Virus Diseases/immunology/virology
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 157
    Publication Date: 2016-03-05
    Description: Little is known about how pro-obesity diets regulate tissue stem and progenitor cell function. Here we show that high-fat diet (HFD)-induced obesity augments the numbers and function of Lgr5(+) intestinal stem cells of the mammalian intestine. Mechanistically, a HFD induces a robust peroxisome proliferator-activated receptor delta (PPAR-delta) signature in intestinal stem cells and progenitor cells (non-intestinal stem cells), and pharmacological activation of PPAR-delta recapitulates the effects of a HFD on these cells. Like a HFD, ex vivo treatment of intestinal organoid cultures with fatty acid constituents of the HFD enhances the self-renewal potential of these organoid bodies in a PPAR-delta-dependent manner. Notably, HFD- and agonist-activated PPAR-delta signalling endow organoid-initiating capacity to progenitors, and enforced PPAR-delta signalling permits these progenitors to form in vivo tumours after loss of the tumour suppressor Apc. These findings highlight how diet-modulated PPAR-delta activation alters not only the function of intestinal stem and progenitor cells, but also their capacity to initiate tumours.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4846772/" 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/PMC4846772/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beyaz, Semir -- Mana, Miyeko D -- Roper, Jatin -- Kedrin, Dmitriy -- Saadatpour, Assieh -- Hong, Sue-Jean -- Bauer-Rowe, Khristian E -- Xifaras, Michael E -- Akkad, Adam -- Arias, Erika -- Pinello, Luca -- Katz, Yarden -- Shinagare, Shweta -- Abu-Remaileh, Monther -- Mihaylova, Maria M -- Lamming, Dudley W -- Dogum, Rizkullah -- Guo, Guoji -- Bell, George W -- Selig, Martin -- Nielsen, G Petur -- Gupta, Nitin -- Ferrone, Cristina R -- Deshpande, Vikram -- Yuan, Guo-Cheng -- Orkin, Stuart H -- Sabatini, David M -- Yilmaz, Omer H -- AI47389/AI/NIAID NIH HHS/ -- DK043351/DK/NIDDK NIH HHS/ -- K08 CA198002/CA/NCI NIH HHS/ -- K99 AG041765/AG/NIA NIH HHS/ -- K99 AG045144/AG/NIA NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- R00 AG041765/AG/NIA NIH HHS/ -- R00 AG045144/AG/NIA NIH HHS/ -- R01 AI047389/AI/NIAID NIH HHS/ -- R01 CA103866/CA/NCI NIH HHS/ -- R01 CA129105/CA/NCI NIH HHS/ -- R37 AI047389/AI/NIAID NIH HHS/ -- T32DK007191/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Mar 3;531(7592):53-8. doi: 10.1038/nature17173.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA. ; Division of Hematology/Oncology, Boston Children's Hospital and Department of Pediatric Oncology, Dana-Farber Cancer Institute, Howard Hughes Medical Institute, Harvard Stem Cell Institute, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Division of Gastroenterology and Molecular Oncology Research Institute, Tufts Medical Center, Boston, Massachusetts 02111, USA. ; Departments of Pathology, Gastroenterology, and Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA. ; Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute and Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA. ; Whitehead Institute for Biomedical Research, Howard Hughes Medical Institute, Department of Biology, MIT, Cambridge, Massachusetts 02142, USA. ; Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA. ; Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA. ; Division of Digestive Diseases, University of Mississippi Medical Center, Jackson, Missisippi 39216, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26935695" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Count ; Cell Self Renewal/drug effects ; Cell Transformation, Neoplastic/*drug effects ; Colonic Neoplasms/*pathology ; Diet, High-Fat/*adverse effects ; Female ; Genes, APC ; Humans ; Intestines/*pathology ; Male ; Mice ; Obesity/chemically induced/pathology ; Organoids/drug effects/metabolism/pathology ; PPAR delta/metabolism ; Signal Transduction/drug effects ; Stem Cell Niche/drug effects ; Stem Cells/*drug effects/metabolism/*pathology ; beta Catenin/metabolism
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  • 158
    Publication Date: 2016-05-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tollefson, Jeff -- England -- Nature. 2016 May 10;533(7602):156-7. doi: 10.1038/533156a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27172025" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biology/instrumentation/*methods ; Cesium Radioisotopes/*supply & distribution ; Immune System/immunology/radiation effects ; Immunologic Techniques/instrumentation/methods ; Internationality ; *Laboratories ; Mice ; *Research Design ; *Research Personnel ; *Security Measures/trends ; X-Rays
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  • 159
    Publication Date: 2016-03-17
    Description: The energetic burden of continuously concentrating solutes against gradients along the tubule may render the kidney especially vulnerable to ischaemia. Acute kidney injury (AKI) affects 3% of all hospitalized patients. Here we show that the mitochondrial biogenesis regulator, PGC1alpha, is a pivotal determinant of renal recovery from injury by regulating nicotinamide adenine dinucleotide (NAD) biosynthesis. Following renal ischaemia, Pgc1alpha(-/-) (also known as Ppargc1a(-/-)) mice develop local deficiency of the NAD precursor niacinamide (NAM, also known as nicotinamide), marked fat accumulation, and failure to re-establish normal function. Notably, exogenous NAM improves local NAD levels, fat accumulation, and renal function in post-ischaemic Pgc1alpha(-/-) mice. Inducible tubular transgenic mice (iNephPGC1alpha) recapitulate the effects of NAM supplementation, including more local NAD and less fat accumulation with better renal function after ischaemia. PGC1alpha coordinately upregulates the enzymes that synthesize NAD de novo from amino acids whereas PGC1alpha deficiency or AKI attenuates the de novo pathway. NAM enhances NAD via the enzyme NAMPT and augments production of the fat breakdown product beta-hydroxybutyrate, leading to increased production of prostaglandin PGE2 (ref. 5), a secreted autacoid that maintains renal function. NAM treatment reverses established ischaemic AKI and also prevented AKI in an unrelated toxic model. Inhibition of beta-hydroxybutyrate signalling or prostaglandin production similarly abolishes PGC1alpha-dependent renoprotection. Given the importance of mitochondrial health in ageing and the function of metabolically active organs, the results implicate NAM and NAD as key effectors for achieving PGC1alpha-dependent stress resistance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tran, Mei T -- Zsengeller, Zsuzsanna K -- Berg, Anders H -- Khankin, Eliyahu V -- Bhasin, Manoj K -- Kim, Wondong -- Clish, Clary B -- Stillman, Isaac E -- Karumanchi, S Ananth -- Rhee, Eugene P -- Parikh, Samir M -- K08-DK090142/DK/NIDDK NIH HHS/ -- K08-DK101560/DK/NIDDK NIH HHS/ -- P30-DK079337/DK/NIDDK NIH HHS/ -- R01 DK095072/DK/NIDDK NIH HHS/ -- R01-DK095072/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Mar 24;531(7595):528-32. doi: 10.1038/nature17184. Epub 2016 Mar 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Nephrology and Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Center for Vascular Biology Research, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Division of Clinical Chemistry, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Bioinformatics and Systems Biology Core, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. ; Nephrology and Endocrine Divisions, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA. ; Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02139, USA. ; Howard Hughes Medical Institute, Chevy Chase, Maryland 20815, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26982719" target="_blank"〉PubMed〈/a〉
    Keywords: 3-Hydroxybutyric Acid/metabolism ; Acute Kidney Injury/drug therapy/*metabolism ; Adipose Tissue/drug effects/metabolism ; Amino Acids/metabolism ; Animals ; Cytokines/metabolism ; Dinoprostone/biosynthesis/metabolism ; Humans ; Ischemia/drug therapy/metabolism ; Kidney/drug effects/*metabolism/physiology/physiopathology ; Male ; Mice ; Mice, Inbred C57BL ; Mitochondria/metabolism ; NAD/*biosynthesis ; Niacinamide/deficiency/pharmacology/therapeutic use ; Nicotinamide Phosphoribosyltransferase/metabolism ; Oxidation-Reduction ; Signal Transduction/drug effects ; Stress, Physiological ; Transcription Factors/deficiency/*metabolism
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  • 160
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2016-03-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, Anthony -- England -- Nature. 2016 Mar 3;531(7592):S18-9. doi: 10.1038/531S18a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26934522" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/metabolism ; Animals ; Brain/*physiology ; Bullying ; DNA Methylation ; Depression/complications/prevention & control/therapy ; Emotional Adjustment ; Epigenesis, Genetic/genetics ; Female ; Hippocampus/metabolism ; Humans ; Hydrocortisone/metabolism ; Maternal Behavior ; Memory/physiology ; Mice ; Models, Animal ; Oxytocin/metabolism ; Pregnancy ; Prenatal Exposure Delayed Effects/genetics ; Psychological Trauma/complications/genetics/metabolism ; Rats ; *Resilience, Psychological ; Social Isolation/psychology ; Stress, Psychological/complications/genetics/metabolism/therapy
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  • 161
    Publication Date: 2016-04-12
    Description: Asymmetric cell division, the partitioning of cellular components in response to polarizing cues during mitosis, has roles in differentiation and development. It is important for the self-renewal of fertilized zygotes in Caenorhabditis elegans and neuroblasts in Drosophila, and in the development of mammalian nervous and digestive systems. T lymphocytes, upon activation by antigen-presenting cells (APCs), can undergo asymmetric cell division, wherein the daughter cell proximal to the APC is more likely to differentiate into an effector-like T cell and the distal daughter is more likely to differentiate into a memory-like T cell. Upon activation and before cell division, expression of the transcription factor c-Myc drives metabolic reprogramming, necessary for the subsequent proliferative burst. Here we find that during the first division of an activated T cell in mice, c-Myc can sort asymmetrically. Asymmetric distribution of amino acid transporters, amino acid content, and activity of mammalian target of rapamycin complex 1 (mTORC1) is correlated with c-Myc expression, and both amino acids and mTORC1 activity sustain the differences in c-Myc expression in one daughter cell compared to the other. Asymmetric c-Myc levels in daughter T cells affect proliferation, metabolism, and differentiation, and these effects are altered by experimental manipulation of mTORC1 activity or c-Myc expression. Therefore, metabolic signalling pathways cooperate with transcription programs to maintain differential cell fates following asymmetric T-cell division.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4851250/" 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/PMC4851250/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Verbist, Katherine C -- Guy, Cliff S -- Milasta, Sandra -- Liedmann, Swantje -- Kaminski, Marcin M -- Wang, Ruoning -- Green, Douglas R -- R01 GM096208/GM/NIGMS NIH HHS/ -- R37 GM052735/GM/NIGMS NIH HHS/ -- England -- Nature. 2016 Apr 21;532(7599):389-93. doi: 10.1038/nature17442. Epub 2016 Apr 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee 38105, USA. ; Center for Childhood Cancer and Blood Disease, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio 43205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27064903" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Transport Systems/metabolism ; Amino Acids/metabolism ; Animals ; CD8-Positive T-Lymphocytes/*cytology/*metabolism ; Cell Differentiation/genetics ; *Cell Division ; *Cell Polarity/genetics ; Female ; *Lymphocyte Activation ; Male ; Mice ; Multiprotein Complexes/metabolism ; Proto-Oncogene Proteins c-myc/genetics/metabolism ; Signal Transduction/genetics ; TOR Serine-Threonine Kinases/metabolism ; Transcription, Genetic
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  • 162
    Publication Date: 2016-01-14
    Description: The myelin sheaths wrapped around axons by oligodendrocytes are crucial for brain function. In ischaemia myelin is damaged in a Ca(2+)-dependent manner, abolishing action potential propagation. This has been attributed to glutamate release activating Ca(2+)-permeable N-methyl-D-aspartate (NMDA) receptors. Surprisingly, we now show that NMDA does not raise the intracellular Ca(2+) concentration ([Ca(2+)]i) in mature oligodendrocytes and that, although ischaemia evokes a glutamate-triggered membrane current, this is generated by a rise of extracellular [K(+)] and decrease of membrane K(+) conductance. Nevertheless, ischaemia raises oligodendrocyte [Ca(2+)]i, [Mg(2+)]i and [H(+)]i, and buffering intracellular pH reduces the [Ca(2+)]i and [Mg(2+)]i increases, showing that these are evoked by the rise of [H(+)]i. The H(+)-gated [Ca(2+)]i elevation is mediated by channels with characteristics of TRPA1, being inhibited by ruthenium red, isopentenyl pyrophosphate, HC-030031, A967079 or TRPA1 knockout. TRPA1 block reduces myelin damage in ischaemia. These data suggest that TRPA1-containing ion channels could be a therapeutic target in white matter ischaemia.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4733665/" 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/PMC4733665/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamilton, Nicola B -- Kolodziejczyk, Karolina -- Kougioumtzidou, Eleni -- Attwell, David -- Wellcome Trust/United Kingdom -- England -- Nature. 2016 Jan 28;529(7587):523-7. doi: 10.1038/nature16519. Epub 2016 Jan 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Physiology &Pharmacology, University College London, Gower St., London WC1E 6BT, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26760212" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Ischemia/*metabolism/*pathology ; Calcium/*metabolism ; Calcium Signaling/drug effects ; Electric Conductivity ; Female ; Hydrogen-Ion Concentration ; Magnesium/metabolism ; Male ; Mice ; Mice, Transgenic ; Multiple Sclerosis/metabolism/pathology ; Myelin Sheath/drug effects/*metabolism/*pathology ; N-Methylaspartate/metabolism/pharmacology ; Oligodendroglia/drug effects/metabolism/pathology ; Potassium/metabolism ; *Protons ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate/metabolism ; Stroke/metabolism/pathology ; Transient Receptor Potential Channels/antagonists & ; inhibitors/deficiency/genetics/*metabolism ; White Matter/metabolism/pathology
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  • 163
    Publication Date: 2016-03-24
    Description: Instinctive reactions to danger are critical to the perpetuation of species and are observed throughout the animal kingdom. The scent of predators induces an instinctive fear response in mice that includes behavioural changes, as well as a surge in blood stress hormones that mobilizes multiple body systems to escape impending danger. How the olfactory system routes predator signals detected in the nose to achieve these effects is unknown. Here we identify a specific area of the olfactory cortex in mice that induces stress hormone responses to volatile predator odours. Using monosynaptic and polysynaptic viral tracers, we found that multiple olfactory cortical areas transmit signals to hypothalamic corticotropin-releasing hormone (CRH) neurons, which control stress hormone levels. However, only one minor cortical area, the amygdalo-piriform transition area (AmPir), contained neurons upstream of CRH neurons that were activated by volatile predator odours. Chemogenetic stimulation of AmPir activated CRH neurons and induced an increase in blood stress hormones, mimicking an instinctive fear response. Moreover, chemogenetic silencing of AmPir markedly reduced the stress hormone response to predator odours without affecting a fear behaviour. These findings suggest that AmPir, a small area comprising 〈5% of the olfactory cortex, plays a key part in the hormonal component of the instinctive fear response to volatile predator scents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kondoh, Kunio -- Lu, Zhonghua -- Ye, Xiaolan -- Olson, David P -- Lowell, Bradford B -- Buck, Linda B -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Apr 7;532(7597):103-6. doi: 10.1038/nature17156. Epub 2016 Mar 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Basic Sciences Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, Seattle, Washington 98109, USA. ; Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27001694" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/blood ; Animals ; Corticosterone/blood ; Corticotropin-Releasing Hormone/blood/metabolism ; Escape Reaction ; Fear ; Female ; Hippocampus/cytology/physiology ; Hormones/blood/*metabolism ; Instinct ; Male ; Mice ; Neurons/metabolism ; Odors/*analysis ; Olfactory Cortex/*anatomy & histology/cytology/*physiology ; *Olfactory Pathways ; Olfactory Perception/physiology ; *Predatory Behavior ; Smell/*physiology ; *Stress, Psychological ; Telencephalon/anatomy & histology/cytology/physiology
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  • 164
    Publication Date: 2016-04-29
    Description: Umbilical cord blood-derived haematopoietic stem cells (HSCs) are essential for many life-saving regenerative therapies. However, despite their advantages for transplantation, their clinical use is restricted because HSCs in cord blood are found only in small numbers. Small molecules that enhance haematopoietic stem and progenitor cell (HSPC) expansion in culture have been identified, but in many cases their mechanisms of action or the nature of the pathways they impinge on are poorly understood. A greater understanding of the molecular circuitry that underpins the self-renewal of human HSCs will facilitate the development of targeted strategies that expand HSCs for regenerative therapies. Whereas transcription factor networks have been shown to influence the self-renewal and lineage decisions of human HSCs, the post-transcriptional mechanisms that guide HSC fate have not been closely investigated. Here we show that overexpression of the RNA-binding protein Musashi-2 (MSI2) induces multiple pro-self-renewal phenotypes, including a 17-fold increase in short-term repopulating cells and a net 23-fold ex vivo expansion of long-term repopulating HSCs. By performing a global analysis of MSI2-RNA interactions, we show that MSI2 directly attenuates aryl hydrocarbon receptor (AHR) signalling through post-transcriptional downregulation of canonical AHR pathway components in cord blood HSPCs. Our study gives mechanistic insight into RNA networks controlled by RNA-binding proteins that underlie self-renewal and provides evidence that manipulating such networks ex vivo can enhance the regenerative potential of human HSCs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4880456/" 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/PMC4880456/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rentas, Stefan -- Holzapfel, Nicholas T -- Belew, Muluken S -- Pratt, Gabriel A -- Voisin, Veronique -- Wilhelm, Brian T -- Bader, Gary D -- Yeo, Gene W -- Hope, Kristin J -- HG004659/HG/NHGRI NIH HHS/ -- MOP-126030/Canadian Institutes of Health Research/Canada -- NS075449/NS/NINDS NIH HHS/ -- England -- Nature. 2016 Apr 28;532(7600):508-11. doi: 10.1038/nature17665.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biomedical Sciences, Stem Cell and Cancer Research Institute, McMaster University, Hamilton, Ontario L8S 4K1, Canada. ; Department of Cellular and Molecular Medicine, Institute for Genomic Medicine, University of California, San Diego, La Jolla, California 92037, USA. ; Bioinformatics Graduate Program, University of California, San Diego, La Jolla, California 92037, USA. ; The Donnelly Centre, University of Toronto, Toronto, Ontario M5S 3E1, Canada. ; Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Quebec H3C 3J7, Canada. ; Department of Physiology, National University of Singapore and Molecular Engineering Laboratory, A*STAR, Singapore 138632, Singapore.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27121842" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Basic Helix-Loop-Helix Transcription Factors/genetics/*metabolism ; Cell Count ; *Cell Self Renewal/genetics ; Down-Regulation/genetics ; Female ; Fetal Blood/cytology ; Gene Knockdown Techniques ; Hematopoietic Stem Cells/*cytology/*metabolism ; Humans ; Male ; Mice ; Protein Binding ; RNA, Messenger/genetics/metabolism ; RNA-Binding Proteins/genetics/*metabolism ; Receptors, Aryl Hydrocarbon/genetics/*metabolism ; *Signal Transduction/genetics
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  • 165
    Publication Date: 2016-02-09
    Description: The tremendous pandemic potential of coronaviruses was demonstrated twice in the past few decades by two global outbreaks of deadly pneumonia. Entry of coronaviruses into cells is mediated by the transmembrane spike glycoprotein S, which forms a trimer carrying receptor-binding and membrane fusion functions. S also contains the principal antigenic determinants and is the target of neutralizing antibodies. Here we present the structure of a mouse coronavirus S trimer ectodomain determined at 4.0 A resolution by single particle cryo-electron microscopy. It reveals the metastable pre-fusion architecture of S and highlights key interactions stabilizing it. The structure shares a common core with paramyxovirus F proteins, implicating mechanistic similarities and an evolutionary connection between these viral fusion proteins. The accessibility of the highly conserved fusion peptide at the periphery of the trimer indicates potential vaccinology strategies to elicit broadly neutralizing antibodies against coronaviruses. Finally, comparison with crystal structures of human coronavirus S domains allows rationalization of the molecular basis for species specificity based on the use of spatially contiguous but distinct domains.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walls, Alexandra C -- Tortorici, M Alejandra -- Bosch, Berend-Jan -- Frenz, Brandon -- Rottier, Peter J M -- DiMaio, Frank -- Rey, Felix A -- Veesler, David -- GM103310/GM/NIGMS NIH HHS/ -- T32GM008268/GM/NIGMS NIH HHS/ -- England -- Nature. 2016 Mar 3;531(7592):114-7. doi: 10.1038/nature16988. Epub 2016 Feb 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA. ; Institut Pasteur, Unite de Virologie Structurale, 75015 Paris, France. ; CNRS UMR 3569 Virologie, 75015 Paris, France. ; Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, The Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26855426" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Neutralizing/immunology ; Cell Line ; Coronavirus Infections/immunology/virology ; *Cryoelectron Microscopy ; Drosophila melanogaster ; Mice ; Models, Molecular ; Molecular Sequence Data ; Murine hepatitis virus/*chemistry/immunology/*ultrastructure ; Protein Multimerization ; Protein Structure, Tertiary ; Spike Glycoprotein, Coronavirus/*chemistry/immunology/*ultrastructure ; Viral Vaccines/chemistry/immunology ; Virus Internalization
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  • 166
    Publication Date: 2016-01-28
    Description: ATP-dependent chromatin remodellers allow access to DNA for transcription factors and the general transcription machinery, but whether mammalian chromatin remodellers target specific nucleosomes to regulate transcription is unclear. Here we present genome-wide remodeller-nucleosome interaction profiles for the chromatin remodellers Chd1, Chd2, Chd4, Chd6, Chd8, Chd9, Brg1 and Ep400 in mouse embryonic stem (ES) cells. These remodellers bind one or both full nucleosomes that flank micrococcal nuclease (MNase)-defined nucleosome-free promoter regions (NFRs), where they separate divergent transcription. Surprisingly, large CpG-rich NFRs that extend downstream of annotated transcriptional start sites are nevertheless bound by non-nucleosomal or subnucleosomal histone variants (H3.3 and H2A.Z) and marked by H3K4me3 and H3K27ac modifications. RNA polymerase II therefore navigates hundreds of base pairs of altered chromatin in the sense direction before encountering an MNase-resistant nucleosome at the 3' end of the NFR. Transcriptome analysis after remodeller depletion reveals reciprocal mechanisms of transcriptional regulation by remodellers. Whereas at active genes individual remodellers have either positive or negative roles via altering nucleosome stability, at polycomb-enriched bivalent genes the same remodellers act in an opposite manner. These findings indicate that remodellers target specific nucleosomes at the edge of NFRs, where they regulate ES cell transcriptional programs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Dieuleveult, Maud -- Yen, Kuangyu -- Hmitou, Isabelle -- Depaux, Arnaud -- Boussouar, Faycal -- Dargham, Daria Bou -- Jounier, Sylvie -- Humbertclaude, Helene -- Ribierre, Florence -- Baulard, Celine -- Farrell, Nina P -- Park, Bongsoo -- Keime, Celine -- Carriere, Lucie -- Berlivet, Soizick -- Gut, Marta -- Gut, Ivo -- Werner, Michel -- Deleuze, Jean-Francois -- Olaso, Robert -- Aude, Jean-Christophe -- Chantalat, Sophie -- Pugh, B Franklin -- Gerard, Matthieu -- HG004160/HG/NHGRI NIH HHS/ -- R01 HG004160/HG/NHGRI NIH HHS/ -- England -- Nature. 2016 Feb 4;530(7588):113-6. doi: 10.1038/nature16505. Epub 2016 Jan 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Integrative Biology of the Cell (I2BC), IBITECS, CEA, CNRS, Universite Paris-Sud, Universite Paris-Saclay, 91198 Gif-sur-Yvette, France. ; Key Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases of Guangdong Higher Education Institutes, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China. ; Center for Eukaryotic Gene Regulation, Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA. ; INSERM, U823; Universite Grenoble Alpes; Institut Albert Bonniot Grenoble, 38700 Grenoble, France. ; Centre National de Genotypage, Institut de Genomique, CEA, 91057 Evry, France. ; IGBMC (Institut de Genetique et de Biologie Moleculaire et Cellulaire), INSERM, U964, CNRS, UMR7104, Universite de Strasbourg, 67404 Illkirch, France. ; Centre Nacional D'Analisi Genomica, 08028 Barcelona, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26814966" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Chromatin Assembly and Disassembly ; DNA Helicases/metabolism ; DNA-Binding Proteins/*metabolism ; *Gene Expression Regulation ; Genome/*genetics ; Histones/metabolism ; Mice ; Micrococcal Nuclease/metabolism ; Mouse Embryonic Stem Cells/cytology/*metabolism ; Nuclear Proteins/metabolism ; Nucleosomes/*genetics/*metabolism ; Promoter Regions, Genetic/genetics ; RNA Polymerase II/metabolism ; Substrate Specificity ; Trans-Activators/metabolism ; Transcription Factors/metabolism ; Transcription Initiation Site
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  • 167
    Publication Date: 2016-03-17
    Description: Alzheimer's disease (AD) is a neurodegenerative disorder characterized by progressive memory decline and subsequent loss of broader cognitive functions. Memory decline in the early stages of AD is mostly limited to episodic memory, for which the hippocampus has a crucial role. However, it has been uncertain whether the observed amnesia in the early stages of AD is due to disrupted encoding and consolidation of episodic information, or an impairment in the retrieval of stored memory information. Here we show that in transgenic mouse models of early AD, direct optogenetic activation of hippocampal memory engram cells results in memory retrieval despite the fact that these mice are amnesic in long-term memory tests when natural recall cues are used, revealing a retrieval, rather than a storage impairment. Before amyloid plaque deposition, the amnesia in these mice is age-dependent, which correlates with a progressive reduction in spine density of hippocampal dentate gyrus engram cells. We show that optogenetic induction of long-term potentiation at perforant path synapses of dentate gyrus engram cells restores both spine density and long-term memory. We also demonstrate that an ablation of dentate gyrus engram cells containing restored spine density prevents the rescue of long-term memory. Thus, selective rescue of spine density in engram cells may lead to an effective strategy for treating memory loss in the early stages of AD.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4847731/" 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/PMC4847731/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roy, Dheeraj S -- Arons, Autumn -- Mitchell, Teryn I -- Pignatelli, Michele -- Ryan, Tomas J -- Tonegawa, Susumu -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Mar 24;531(7595):508-12. doi: 10.1038/nature17172. Epub 2016 Mar 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory, Department of Biology and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; 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/26982728" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Alzheimer Disease/*pathology/*physiopathology ; Amnesia/pathology/physiopathology ; Amyloid beta-Protein Precursor/genetics ; Animals ; Dendritic Spines/pathology/physiology ; Dentate Gyrus/*cytology/pathology/*physiology/physiopathology ; *Disease Models, Animal ; Early Medical Intervention ; Humans ; Long-Term Potentiation ; Male ; Memory, Episodic ; Memory, Long-Term/*physiology ; Mice ; Mice, Transgenic ; Optogenetics ; Plaque, Amyloid ; Presenilin-1/genetics ; Synapses/metabolism ; Transgenes/genetics ; tau Proteins/genetics
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  • 168
    Publication Date: 2016-03-18
    Description: Chronic hepatitis B virus infection is a leading cause of cirrhosis and liver cancer. Hepatitis B virus encodes the regulatory HBx protein whose primary role is to promote transcription of the viral genome, which persists as an extrachromosomal DNA circle in infected cells. HBx accomplishes this task by an unusual mechanism, enhancing transcription only from extrachromosomal DNA templates. Here we show that HBx achieves this by hijacking the cellular DDB1-containing E3 ubiquitin ligase to target the 'structural maintenance of chromosomes' (Smc) complex Smc5/6 for degradation. Blocking this event inhibits the stimulatory effect of HBx both on extrachromosomal reporter genes and on hepatitis B virus transcription. Conversely, silencing the Smc5/6 complex enhances extrachromosomal reporter gene transcription in the absence of HBx, restores replication of an HBx-deficient hepatitis B virus, and rescues wild-type hepatitis B virus in a DDB1-knockdown background. The Smc5/6 complex associates with extrachromosomal reporters and the hepatitis B virus genome, suggesting a direct mechanism of transcriptional inhibition. These results uncover a novel role for the Smc5/6 complex as a restriction factor selectively blocking extrachromosomal DNA transcription. By destroying this complex, HBx relieves the inhibition to allow productive hepatitis B virus gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Decorsiere, Adrien -- Mueller, Henrik -- van Breugel, Pieter C -- Abdul, Fabien -- Gerossier, Laetitia -- Beran, Rudolf K -- Livingston, Christine M -- Niu, Congrong -- Fletcher, Simon P -- Hantz, Olivier -- Strubin, Michel -- England -- Nature. 2016 Mar 17;531(7594):386-9. doi: 10.1038/nature17170.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Molecular Medicine, University Medical Centre (C.M.U.), Rue Michel-Servet 1, 1211 Geneva 4, Switzerland. ; CRCL, INSERM U1052, CNRS 5286, Universite de Lyon, 151, Cours A Thomas, 69424 Lyon Cedex, France. ; Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26983541" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle Proteins/*metabolism ; Cell Line, Tumor ; DNA, Viral/genetics/metabolism ; Genes, Reporter ; Genome, Viral/genetics ; Hepatitis B/virology ; Hepatitis B virus/genetics/*physiology ; Hepatocytes/virology ; *Host Specificity ; Humans ; Liver/metabolism/virology ; Male ; Mice ; Plasmids/genetics/metabolism ; Protein Binding ; Proteolysis ; Trans-Activators/*metabolism ; Transcription, Genetic ; Ubiquitin/metabolism ; Ubiquitin-Protein Ligases/metabolism ; Virus Replication
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  • 169
    Publication Date: 2016-03-31
    Description: Colonic epithelial cells are covered by thick inner and outer mucus layers. The inner mucus layer is free of commensal microbiota, which contributes to the maintenance of gut homeostasis. In the small intestine, molecules critical for prevention of bacterial invasion into epithelia such as Paneth-cell-derived anti-microbial peptides and regenerating islet-derived 3 (RegIII) family proteins have been identified. Although there are mucus layers providing physical barriers against the large number of microbiota present in the large intestine, the mechanisms that separate bacteria and colonic epithelia are not fully elucidated. Here we show that Ly6/PLAUR domain containing 8 (Lypd8) protein prevents flagellated microbiota invading the colonic epithelia in mice. Lypd8, selectively expressed in epithelial cells at the uppermost layer of the large intestinal gland, was secreted into the lumen and bound flagellated bacteria including Proteus mirabilis. In the absence of Lypd8, bacteria were present in the inner mucus layer and many flagellated bacteria invaded epithelia. Lypd8(-/-) mice were highly sensitive to intestinal inflammation induced by dextran sulfate sodium (DSS). Antibiotic elimination of Gram-negative flagellated bacteria restored the bacterial-free state of the inner mucus layer and ameliorated DSS-induced intestinal inflammation in Lypd8(-/-) mice. Lypd8 bound to flagella and suppressed motility of flagellated bacteria. Thus, Lypd8 mediates segregation of intestinal bacteria and epithelial cells in the colon to preserve intestinal homeostasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Okumura, Ryu -- Kurakawa, Takashi -- Nakano, Takashi -- Kayama, Hisako -- Kinoshita, Makoto -- Motooka, Daisuke -- Gotoh, Kazuyoshi -- Kimura, Taishi -- Kamiyama, Naganori -- Kusu, Takashi -- Ueda, Yoshiyasu -- Wu, Hong -- Iijima, Hideki -- Barman, Soumik -- Osawa, Hideki -- Matsuno, Hiroshi -- Nishimura, Junichi -- Ohba, Yusuke -- Nakamura, Shota -- Iida, Tetsuya -- Yamamoto, Masahiro -- Umemoto, Eiji -- Sano, Koichi -- Takeda, Kiyoshi -- England -- Nature. 2016 Apr 7;532(7597):117-21. doi: 10.1038/nature17406. Epub 2016 Mar 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan. ; Core Research for Evolutional Science and Technology, Japan Agency for Medical Research and Development, Tokyo 100-0004, Japan. ; Department of Microbiology and Infection Control, Osaka Medical College, Takatsuki, Osaka 569-8686, Japan. ; Department of Infection Metagenomics, Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan. ; Department of Bacteriology, Okayama University Graduate School of Medicine, Okayama 700-8558, Japan. ; Department of Gastroenterology and Hepatology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan. ; Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan. ; Department of Cell Physiology, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan. ; Department of Bacterial Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan. ; Laboratory of Immunoparasitology, Research Institute for Microbial Diseases, WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27027293" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Adhesion ; Caco-2 Cells ; Cell Line ; Colitis/chemically induced/drug therapy/genetics ; Colon/*microbiology ; Dextran Sulfate ; Epithelium/*microbiology ; Female ; *Flagella ; GPI-Linked Proteins/deficiency/genetics/*metabolism/secretion ; Gram-Negative Bacteria/drug effects/metabolism/pathogenicity/*physiology ; Homeostasis ; Humans ; Inflammation/chemically induced/drug therapy/genetics ; Intestinal Mucosa/cytology/metabolism/*microbiology/secretion ; Male ; Mice ; Proteus mirabilis/drug effects/metabolism/pathogenicity ; Symbiosis
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  • 170
    Publication Date: 2016-03-29
    Description: Circuits in the cerebral cortex consist of thousands of neurons connected by millions of synapses. A precise understanding of these local networks requires relating circuit activity with the underlying network structure. For pyramidal cells in superficial mouse visual cortex (V1), a consensus is emerging that neurons with similar visual response properties excite each other, but the anatomical basis of this recurrent synaptic network is unknown. Here we combined physiological imaging and large-scale electron microscopy to study an excitatory network in V1. We found that layer 2/3 neurons organized into subnetworks defined by anatomical connectivity, with more connections within than between groups. More specifically, we found that pyramidal neurons with similar orientation selectivity preferentially formed synapses with each other, despite the fact that axons and dendrites of all orientation selectivities pass near (〈5 mum) each other with roughly equal probability. Therefore, we predict that mechanisms of functionally specific connectivity take place at the length scale of spines. Neurons with similar orientation tuning formed larger synapses, potentially enhancing the net effect of synaptic specificity. With the ability to study thousands of connections in a single circuit, functional connectomics is proving a powerful method to uncover the organizational logic of cortical networks.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4844839/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4844839/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Wei-Chung Allen -- Bonin, Vincent -- Reed, Michael -- Graham, Brett J -- Hood, Greg -- Glattfelder, Katie -- Reid, R Clay -- P30 EY012196/EY/NEI NIH HHS/ -- P30 EY12196/EY/NEI NIH HHS/ -- P41 GM103712/GM/NIGMS NIH HHS/ -- P41 RR006009/RR/NCRR NIH HHS/ -- P41 RR06009/RR/NCRR NIH HHS/ -- R01 EY010115/EY/NEI NIH HHS/ -- R01 EY10115/EY/NEI NIH HHS/ -- R01 NS075436/NS/NINDS NIH HHS/ -- R21 NS085320/NS/NINDS NIH HHS/ -- England -- Nature. 2016 Apr 21;532(7599):370-4. doi: 10.1038/nature17192. Epub 2016 Mar 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Neuro-Electronics Research Flanders, a research initiative by imec, Vlaams Instituut voor Biotechnologie (VIB) and Katholieke Universiteit (KU) Leuven, 3001 Leuven, Belgium. ; Biomedical Applications Group, Pittsburgh Supercomputing Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA. ; Allen Institute for Brain Science, Seattle, Washington 98103, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27018655" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/physiology ; Calcium/analysis ; Dendrites/physiology ; Male ; Mice ; Mice, Inbred C57BL ; Photons ; Pyramidal Cells/cytology/physiology ; Synapses/metabolism ; Visual Cortex/*anatomy & histology/cytology/*physiology/ultrastructure ; Visual Pathways/anatomy & histology/*cytology/*physiology/ultrastructure
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  • 171
    Publication Date: 2016-01-07
    Description: Mechanisms that maintain cancer stem cells are crucial to tumour progression. The ID2 protein supports cancer hallmarks including the cancer stem cell state. HIFalpha transcription factors, most notably HIF2alpha (also known as EPAS1), are expressed in and required for maintenance of cancer stem cells (CSCs). However, the pathways that are engaged by ID2 or drive HIF2alpha accumulation in CSCs have remained unclear. Here we report that DYRK1A and DYRK1B kinases phosphorylate ID2 on threonine 27 (Thr27). Hypoxia downregulates this phosphorylation via inactivation of DYRK1A and DYRK1B. The activity of these kinases is stimulated in normoxia by the oxygen-sensing prolyl hydroxylase PHD1 (also known as EGLN2). ID2 binds to the VHL ubiquitin ligase complex, displaces VHL-associated Cullin 2, and impairs HIF2alpha ubiquitylation and degradation. Phosphorylation of Thr27 of ID2 by DYRK1 blocks ID2-VHL interaction and preserves HIF2alpha ubiquitylation. In glioblastoma, ID2 positively modulates HIF2alpha activity. Conversely, elevated expression of DYRK1 phosphorylates Thr27 of ID2, leading to HIF2alpha destabilization, loss of glioma stemness, inhibition of tumour growth, and a more favourable outcome for patients with glioblastoma.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Sang Bae -- Frattini, Veronique -- Bansal, Mukesh -- Castano, Angelica M -- Sherman, Dan -- Hutchinson, Keino -- Bruce, Jeffrey N -- Califano, Andrea -- Liu, Guangchao -- Cardozo, Timothy -- Iavarone, Antonio -- Lasorella, Anna -- R01CA101644/CA/NCI NIH HHS/ -- R01CA131126/CA/NCI NIH HHS/ -- R01CA178546/CA/NCI NIH HHS/ -- R01NS061776/NS/NINDS NIH HHS/ -- England -- Nature. 2016 Jan 14;529(7585):172-7. doi: 10.1038/nature16475. Epub 2016 Jan 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Cancer Genetics, Columbia University Medical Center, New York 10032, USA. ; Department of Systems Biology, Columbia University Medical Center, New York 10032, USA. ; Center for Computational Biology and Bioinformatics, Columbia University Medical Center, New York 10032, USA. ; Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York 10014, USA. ; Department of Neurosurgery, Columbia University Medical Center, New York 10032, USA. ; Department of Neurology, Columbia University Medical Center, New York 10032, USA. ; Department of Pathology, Columbia University Medical Center, New York 10032, USA. ; Department of Pediatrics, Columbia University Medical Center, New York 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26735018" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basic Helix-Loop-Helix Transcription Factors/metabolism ; Cell Hypoxia ; Cell Line, Tumor ; Cullin Proteins/metabolism ; Glioblastoma/*metabolism/*pathology ; Humans ; Hypoxia-Inducible Factor-Proline Dioxygenases/metabolism ; Inhibitor of Differentiation Protein 2/*metabolism ; Male ; Mice ; Neoplastic Stem Cells/*metabolism/pathology ; Oxygen/metabolism ; Phosphorylation ; Phosphothreonine/metabolism ; Protein Binding ; Protein-Serine-Threonine Kinases/antagonists & inhibitors/metabolism ; Protein-Tyrosine Kinases/antagonists & inhibitors/metabolism ; Ubiquitination ; Von Hippel-Lindau Tumor Suppressor Protein/*antagonists & inhibitors/metabolism ; Xenograft Model Antitumor Assays
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  • 172
    Publication Date: 2016-03-25
    Description: Focal amplifications of chromosome 3p13-3p14 occur in about 10% of melanomas and are associated with a poor prognosis. The melanoma-specific oncogene MITF resides at the epicentre of this amplicon. However, whether other loci present in this amplicon also contribute to melanomagenesis is unknown. Here we show that the recently annotated long non-coding RNA (lncRNA) gene SAMMSON is consistently co-gained with MITF. In addition, SAMMSON is a target of the lineage-specific transcription factor SOX10 and its expression is detectable in more than 90% of human melanomas. Whereas exogenous SAMMSON increases the clonogenic potential in trans, SAMMSON knockdown drastically decreases the viability of melanoma cells irrespective of their transcriptional cell state and BRAF, NRAS or TP53 mutational status. Moreover, SAMMSON targeting sensitizes melanoma to MAPK-targeting therapeutics both in vitro and in patient-derived xenograft models. Mechanistically, SAMMSON interacts with p32, a master regulator of mitochondrial homeostasis and metabolism, to increase its mitochondrial targeting and pro-oncogenic function. Our results indicate that silencing of the lineage addiction oncogene SAMMSON disrupts vital mitochondrial functions in a cancer-cell-specific manner; this silencing is therefore expected to deliver highly effective and tissue-restricted anti-melanoma therapeutic responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leucci, Eleonora -- Vendramin, Roberto -- Spinazzi, Marco -- Laurette, Patrick -- Fiers, Mark -- Wouters, Jasper -- Radaelli, Enrico -- Eyckerman, Sven -- Leonelli, Carina -- Vanderheyden, Katrien -- Rogiers, Aljosja -- Hermans, Els -- Baatsen, Pieter -- Aerts, Stein -- Amant, Frederic -- Van Aelst, Stefan -- van den Oord, Joost -- de Strooper, Bart -- Davidson, Irwin -- Lafontaine, Denis L J -- Gevaert, Kris -- Vandesompele, Jo -- Mestdagh, Pieter -- Marine, Jean-Christophe -- England -- Nature. 2016 Mar 24;531(7595):518-22. doi: 10.1038/nature17161.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory For Molecular Cancer Biology, Center for Human Genetics, KULeuven, Herestraat 49, 3000 Leuven, Belgium. ; Center for the Biology of Disease, VIB, Herestraat 49, 3000 Leuven, Belgium. ; Institut de Genetique et de Biologie Moleculaire et Cellulaire (IGBMC), Rue Laurent Fries 1, 67404 Illkirch, France. ; Laboratory of Translational Cell and Tissue Research, Department of Pathology, KULeuven and UZ Leuven, Herestraat 49, 3000 Leuven, Belgium. ; Mouse Histopathology Core Facility, Center for the Biology of Disease, VIB-KULeuven, Herestraat 49, 3000 Leuven, Belgium. ; Medical Biotechnology Center, VIB, Albert Baertsoenkaai 3, 9000 Gent, Belgium. ; Department of Biochemistry, Gent University, Albert Baertsoenkaai 3, 9000 Gent, Belgium. ; Center for Medical Genetics, Gent University, De Pintelaan 185, 9000 Gent, Belgium. ; Cancer Research Institute Gent, Gent University, De Pintelaan 185, 9000 Gent, Belgium. ; Gynaecologische Oncologie, KU Leuven, Herestraat 49, 3000 Leuven, Belgium. ; Laboratory of Computational Biology, Center for Human Genetics, KULeuven, Herestraat 49, 3000 Leuven, Belgium. ; Department of Applied Mathematics, Computer Science and Statistics, Gent University, De Pintelaan 185, 9000 Gent, Belgium. ; Department of Mathematics, KU Leuven, Celestijnenlann 200B, 3001 Leuven, Belgium. ; RNA Molecular Biology, Center for Microscopy and Molecular Imaging, Universite Libre de Bruxelles (ULB), rue des Professeurs Jeener et Brachet 12, 6041 Charleroi, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27008969" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinogenesis/genetics/pathology ; Cell Lineage ; Cell Proliferation ; Cell Survival ; Chromosomes, Human, Pair 3/genetics ; Clone Cells/metabolism/pathology ; Female ; Gene Amplification/genetics ; Gene Knockdown Techniques ; Humans ; Melanoma/*genetics/*pathology/therapy ; Mice ; Microphthalmia-Associated Transcription Factor/genetics ; Mitochondria/genetics/metabolism/pathology ; Mitochondrial Proteins/metabolism ; Mitogen-Activated Protein Kinases/antagonists & inhibitors/metabolism ; Molecular Targeted Therapy ; Oncogenes/*genetics ; RNA, Long Noncoding/*genetics/therapeutic use ; SOXE Transcription Factors/metabolism ; Xenograft Model Antitumor Assays
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  • 173
    facet.materialart.
    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2016-03-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eisenstein, Michael -- England -- Nature. 2016 Mar 17;531(7594):401-3. doi: 10.1038/531401a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26983542" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biosensing Techniques/methods ; Biotechnology/economics/standards/*trends ; CRISPR-Cas Systems/genetics ; *Cell Survival ; Cell-Free System ; DNA/analysis/chemical synthesis/genetics ; Escherichia coli/genetics/metabolism ; Gout/diagnosis/prevention & control ; Humans ; Hydrocodone/metabolism ; Mice ; Obesity/diagnosis/prevention & control ; Promoter Regions, Genetic/genetics ; Synthetic Biology/economics/standards/*trends ; Yeasts/genetics/metabolism
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  • 174
    facet.materialart.
    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2016-05-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scott, Andrew R -- England -- Nature. 2016 May 11;533(7602):S60-1. doi: 10.1038/533S60a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27167393" target="_blank"〉PubMed〈/a〉
    Keywords: *Access to Information ; Animals ; *Azepines/classification/economics/pharmacology/therapeutic use ; Clinical Trials as Topic ; Drug Discovery/economics/*methods ; Histones/metabolism ; Humans ; *Information Dissemination ; Male ; Mice ; Neoplasms/drug therapy ; Patents as Topic/statistics & numerical data ; Protein Binding ; Protein Structure, Tertiary ; *Triazoles/classification/economics/pharmacology/therapeutic use ; Xenograft Model Antitumor Assays
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  • 175
    Publication Date: 2016-04-07
    Description: Neoplastic pancreatic epithelial cells are believed to die through caspase 8-dependent apoptotic cell death, and chemotherapy is thought to promote tumour apoptosis. Conversely, cancer cells often disrupt apoptosis to survive. Another type of programmed cell death is necroptosis (programmed necrosis), but its role in pancreatic ductal adenocarcinoma (PDA) is unclear. There are many potential inducers of necroptosis in PDA, including ligation of tumour necrosis factor receptor 1 (TNFR1), CD95, TNF-related apoptosis-inducing ligand (TRAIL) receptors, Toll-like receptors, reactive oxygen species, and chemotherapeutic drugs. Here we report that the principal components of the necrosome, receptor-interacting protein (RIP)1 and RIP3, are highly expressed in PDA and are further upregulated by the chemotherapy drug gemcitabine. Blockade of the necrosome in vitro promoted cancer cell proliferation and induced an aggressive oncogenic phenotype. By contrast, in vivo deletion of RIP3 or inhibition of RIP1 protected against oncogenic progression in mice and was associated with the development of a highly immunogenic myeloid and T cell infiltrate. The immune-suppressive tumour microenvironment associated with intact RIP1/RIP3 signalling depended in part on necroptosis-induced expression of the chemokine attractant CXCL1, and CXCL1 blockade protected against PDA. Moreover, cytoplasmic SAP130 (a subunit of the histone deacetylase complex) was expressed in PDA in a RIP1/RIP3-dependent manner, and Mincle--its cognate receptor--was upregulated in tumour-infiltrating myeloid cells. Ligation of Mincle by SAP130 promoted oncogenesis, whereas deletion of Mincle protected against oncogenesis and phenocopied the immunogenic reprogramming of the tumour microenvironment that was induced by RIP3 deletion. Cellular depletion suggested that whereas inhibitory macrophages promote tumorigenesis in PDA, they lose their immune-suppressive effects when RIP3 or Mincle is deleted. Accordingly, T cells, which are not protective against PDA progression in mice with intact RIP3 or Mincle signalling, are reprogrammed into indispensable mediators of anti-tumour immunity in the absence of RIP3 or Mincle. Our work describes parallel networks of necroptosis-induced CXCL1 and Mincle signalling that promote macrophage-induced adaptive immune suppression and thereby enable PDA progression.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4833566/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4833566/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seifert, Lena -- Werba, Gregor -- Tiwari, Shaun -- Giao Ly, Nancy Ngoc -- Alothman, Sara -- Alqunaibit, Dalia -- Avanzi, Antonina -- Barilla, Rocky -- Daley, Donnele -- Greco, Stephanie H -- Torres-Hernandez, Alejandro -- Pergamo, Matthew -- Ochi, Atsuo -- Zambirinis, Constantinos P -- Pansari, Mridul -- Rendon, Mauricio -- Tippens, Daniel -- Hundeyin, Mautin -- Mani, Vishnu R -- Hajdu, Cristina -- Engle, Dannielle -- Miller, George -- CA155649/CA/NCI NIH HHS/ -- CA168611/CA/NCI NIH HHS/ -- CA193111/CA/NCI NIH HHS/ -- P30CA016087/CA/NCI NIH HHS/ -- R01 CA168611/CA/NCI NIH HHS/ -- T32 CA193111/CA/NCI NIH HHS/ -- UL1 TR000038/TR/NCATS NIH HHS/ -- England -- Nature. 2016 Apr 14;532(7598):245-9. doi: 10.1038/nature17403. Epub 2016 Apr 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉S. Arthur Localio Laboratory, Department of Surgery, New York University School of Medicine, 550 First Avenue, New York, New York 10016, USA. ; Department of Cell Biology, New York University School of Medicine, 550 First Avenue, New York, New York 10016, USA. ; Department of Pathology, New York University School of Medicine, 550 First Avenue, New York, New York 10016, USA. ; Cold Spring Harbor Laboratories, Cold Spring Harbor, New York 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27049944" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/immunology/metabolism/pathology ; Animals ; Apoptosis/drug effects ; *Carcinogenesis/drug effects ; Carcinoma, Pancreatic Ductal/immunology/metabolism/pathology ; Cell Line, Tumor ; Cell Proliferation/drug effects ; Chemokine CXCL1/antagonists & inhibitors/*metabolism ; Deoxycytidine/analogs & derivatives/pharmacology ; Disease Progression ; Female ; GTPase-Activating Proteins/metabolism ; Gene Expression Regulation, Neoplastic ; Humans ; *Immune Tolerance ; Lectins, C-Type/immunology/*metabolism ; Male ; Membrane Proteins/immunology/*metabolism ; Mice ; Mice, Inbred C57BL ; *Necrosis ; Pancreatic Neoplasms/*immunology/metabolism/*pathology ; Receptor-Interacting Protein Serine-Threonine Kinases/metabolism ; Signal Transduction ; Up-Regulation
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  • 176
    Publication Date: 2016-01-28
    Description: Schizophrenia is a heritable brain illness with unknown pathogenic mechanisms. Schizophrenia's strongest genetic association at a population level involves variation in the major histocompatibility complex (MHC) locus, but the genes and molecular mechanisms accounting for this have been challenging to identify. Here we show that this association arises in part from many structurally diverse alleles of the complement component 4 (C4) genes. We found that these alleles generated widely varying levels of C4A and C4B expression in the brain, with each common C4 allele associating with schizophrenia in proportion to its tendency to generate greater expression of C4A. Human C4 protein localized to neuronal synapses, dendrites, axons, and cell bodies. In mice, C4 mediated synapse elimination during postnatal development. These results implicate excessive complement activity in the development of schizophrenia and may help explain the reduced numbers of synapses in the brains of individuals with schizophrenia.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4752392/" 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/PMC4752392/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sekar, Aswin -- Bialas, Allison R -- de Rivera, Heather -- Davis, Avery -- Hammond, Timothy R -- Kamitaki, Nolan -- Tooley, Katherine -- Presumey, Jessy -- Baum, Matthew -- Van Doren, Vanessa -- Genovese, Giulio -- Rose, Samuel A -- Handsaker, Robert E -- Schizophrenia Working Group of the Psychiatric Genomics Consortium -- Daly, Mark J -- Carroll, Michael C -- Stevens, Beth -- McCarroll, Steven A -- R01 HG006855/HG/NHGRI NIH HHS/ -- R01 MH077139/MH/NIMH NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- U01 MH105641/MH/NIMH NIH HHS/ -- England -- Nature. 2016 Feb 11;530(7589):177-83. doi: 10.1038/nature16549. Epub 2016 Jan 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA. ; MD-PhD Program, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Department of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, Massachusetts 02115, USA. ; Analytical and Translational Genetics Unit, Massachusetts General Hospital, Boston, Massachusetts 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26814963" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Animals ; Axons/metabolism ; Base Sequence ; Brain/metabolism/pathology ; Complement C4/chemistry/*genetics ; Complement Pathway, Classical ; Dendrites/metabolism ; Gene Dosage/genetics ; Gene Expression Regulation/genetics ; Genetic Predisposition to Disease/*genetics ; Genetic Variation/*genetics ; Haplotypes/genetics ; Humans ; Major Histocompatibility Complex/genetics ; Mice ; Models, Animal ; Neuronal Plasticity/genetics/physiology ; Polymorphism, Single Nucleotide/genetics ; RNA, Messenger/analysis/genetics ; Risk Factors ; Schizophrenia/*genetics/pathology ; Synapses/metabolism
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  • 177
    Publication Date: 2016-02-13
    Description: The proteasome is a multi-component protease complex responsible for regulating key processes such as the cell cycle and antigen presentation. Compounds that target the proteasome are potentially valuable tools for the treatment of pathogens that depend on proteasome function for survival and replication. In particular, proteasome inhibitors have been shown to be toxic for the malaria parasite Plasmodium falciparum at all stages of its life cycle. Most compounds that have been tested against the parasite also inhibit the mammalian proteasome, resulting in toxicity that precludes their use as therapeutic agents. Therefore, better definition of the substrate specificity and structural properties of the Plasmodium proteasome could enable the development of compounds with sufficient selectivity to allow their use as anti-malarial agents. To accomplish this goal, here we use a substrate profiling method to uncover differences in the specificities of the human and P. falciparum proteasome. We design inhibitors based on amino-acid preferences specific to the parasite proteasome, and find that they preferentially inhibit the beta2-subunit. We determine the structure of the P. falciparum 20S proteasome bound to the inhibitor using cryo-electron microscopy and single-particle analysis, to a resolution of 3.6 A. These data reveal the unusually open P. falciparum beta2 active site and provide valuable information about active-site architecture that can be used to further refine inhibitor design. Furthermore, consistent with the recent finding that the proteasome is important for stress pathways associated with resistance of artemisinin family anti-malarials, we observe growth inhibition synergism with low doses of this beta2-selective inhibitor in artemisinin-sensitive and -resistant parasites. Finally, we demonstrate that a parasite-selective inhibitor could be used to attenuate parasite growth in vivo without appreciable toxicity to the host. Thus, the Plasmodium proteasome is a chemically tractable target that could be exploited by next-generation anti-malarial agents.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4755332/" 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/PMC4755332/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Hao -- O'Donoghue, Anthony J -- van der Linden, Wouter A -- Xie, Stanley C -- Yoo, Euna -- Foe, Ian T -- Tilley, Leann -- Craik, Charles S -- da Fonseca, Paula C A -- Bogyo, Matthew -- MC-UP-1201/5/Medical Research Council/United Kingdom -- R01 AI078947/AI/NIAID NIH HHS/ -- R01 AI105106/AI/NIAID NIH HHS/ -- R01AI078947/AI/NIAID NIH HHS/ -- R01EB05011/EB/NIBIB NIH HHS/ -- England -- Nature. 2016 Feb 11;530(7589):233-6. doi: 10.1038/nature16936.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94158, USA. ; Department of Biochemistry and Molecular Biology, Bio21 Institute, University of Melbourne, Melbourne 3010, Victoria, Australia. ; MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge CB2 0QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26863983" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antimalarials/adverse effects/*chemistry/*pharmacology/toxicity ; Artemisinins/pharmacology ; Catalytic Domain ; Cryoelectron Microscopy ; Dose-Response Relationship, Drug ; *Drug Design ; Drug Resistance ; Drug Synergism ; Enzyme Activation ; Female ; Humans ; Mice ; Mice, Inbred BALB C ; Models, Molecular ; Plasmodium/*drug effects/*enzymology/growth & development ; Plasmodium chabaudi/drug effects/enzymology/physiology ; Plasmodium falciparum/drug effects/enzymology/growth & development ; Proteasome Endopeptidase Complex/chemistry/metabolism/ultrastructure ; Proteasome Inhibitors/adverse effects/*chemistry/*pharmacology/toxicity ; Protein Subunits/antagonists & inhibitors/chemistry/metabolism ; Species Specificity ; Substrate Specificity/drug effects
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  • 178
    Publication Date: 2016-05-07
    Description: T follicular helper (Tfh) cells are a subset of T cells carrying the CD4 antigen; they are important in supporting plasma cell and germinal centre responses. The initial induction of Tfh cell properties occurs within the first few days after activation by antigen recognition on dendritic cells, although how dendritic cells promote this cell-fate decision is not fully understood. Moreover, although Tfh cells are uniquely defined by expression of the follicle-homing receptor CXCR5 (refs 1, 2), the guidance receptor promoting the earlier localization of activated T cells at the interface of the B-cell follicle and T zone has been unclear. Here we show that the G-protein-coupled receptor EBI2 (GPR183) and its ligand 7alpha,25-dihydroxycholesterol mediate positioning of activated CD4 T cells at the interface of the follicle and T zone. In this location they interact with activated dendritic cells and are exposed to Tfh-cell-promoting inducible co-stimulator (ICOS) ligand. Interleukin-2 (IL-2) is a cytokine that has multiple influences on T-cell fate, including negative regulation of Tfh cell differentiation. We demonstrate that activated dendritic cells in the outer T zone further augment Tfh cell differentiation by producing membrane and soluble forms of CD25, the IL-2 receptor alpha-chain, and quenching T-cell-derived IL-2. Mice lacking EBI2 in T cells or CD25 in dendritic cells have reduced Tfh cells and mount defective T-cell-dependent plasma cell and germinal centre responses. These findings demonstrate that distinct niches within the lymphoid organ T zone support distinct cell fate decisions, and they establish a function for dendritic-cell-derived CD25 in controlling IL-2 availability and T-cell differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Jianhua -- Lu, Erick -- Yi, Tangsheng -- Cyster, Jason G -- AI40098/AI/NIAID NIH HHS/ -- R01 AI040098/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 May 5;533(7601):110-4. doi: 10.1038/nature17947.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, California 94143, USA. ; Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, California 94143, USA. ; Key Laboratory of Medical Molecular Virology, Department of Medical Microbiology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27147029" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Differentiation ; Cell Membrane/metabolism ; Dendritic Cells/cytology/*immunology ; Female ; Germinal Center/immunology ; Hydroxycholesterols/metabolism ; Inducible T-Cell Co-Stimulator Protein/metabolism ; Interleukin-2/*immunology ; Interleukin-2 Receptor alpha Subunit/biosynthesis/chemistry/deficiency/metabolism ; Lymphocyte Activation ; Male ; Mice ; Plasma Cells/immunology ; Receptors, G-Protein-Coupled/deficiency/genetics/*metabolism ; Solubility ; T-Lymphocytes, Helper-Inducer/*cytology/*immunology
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  • 179
    Publication Date: 2016-02-09
    Description: Sighs are long, deep breaths expressing sadness, relief or exhaustion. Sighs also occur spontaneously every few minutes to reinflate alveoli, and sighing increases under hypoxia, stress, and certain psychiatric conditions. Here we use molecular, genetic, and pharmacologic approaches to identify a peptidergic sigh control circuit in murine brain. Small neural subpopulations in a key breathing control centre, the retrotrapezoid nucleus/parafacial respiratory group (RTN/pFRG), express bombesin-like neuropeptide genes neuromedin B (Nmb) or gastrin-releasing peptide (Grp). These project to the preBotzinger Complex (preBotC), the respiratory rhythm generator, which expresses NMB and GRP receptors in overlapping subsets of ~200 neurons. Introducing either neuropeptide into preBotC or onto preBotC slices, induced sighing or in vitro sigh activity, whereas elimination or inhibition of either receptor reduced basal sighing, and inhibition of both abolished it. Ablating receptor-expressing neurons eliminated basal and hypoxia-induced sighing, but left breathing otherwise intact initially. We propose that these overlapping peptidergic pathways comprise the core of a sigh control circuit that integrates physiological and perhaps emotional input to transform normal breaths into sighs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Peng -- Janczewski, Wiktor A -- Yackle, Kevin -- Kam, Kaiwen -- Pagliardini, Silvia -- Krasnow, Mark A -- Feldman, Jack L -- HL40959/HL/NHLBI NIH HHS/ -- HL70029/HL/NHLBI NIH HHS/ -- NS72211/NS/NINDS NIH HHS/ -- R01 HL040959/HL/NHLBI NIH HHS/ -- R01 HL070029/HL/NHLBI NIH HHS/ -- R01 NS072211/NS/NINDS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Feb 18;530(7590):293-7. doi: 10.1038/nature16964. Epub 2016 Feb 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA. ; Systems Neurobiology Laboratory, Department of Neurobiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26855425" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bombesin/pharmacology ; Emotions/physiology ; Female ; Gastrin-Releasing Peptide/deficiency/genetics/*metabolism ; In Vitro Techniques ; Male ; Mice ; Mice, Inbred C57BL ; Neurokinin B/*analogs & derivatives/deficiency/genetics/metabolism/pharmacology ; Neurons/drug effects/*physiology ; Rats ; Rats, Sprague-Dawley ; Receptors, Bombesin/*metabolism ; *Respiration/drug effects ; Respiratory Center/cytology/drug effects/physiology ; Ribosome Inactivating Proteins, Type 1/pharmacology ; Signal Transduction/drug effects/*physiology
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  • 180
    Publication Date: 2016-04-14
    Description: Neural activity maintains representations that bridge past and future events, often over many seconds. Network models can produce persistent and ramping activity, but the positive feedback that is critical for these slow dynamics can cause sensitivity to perturbations. Here we use electrophysiology and optogenetic perturbations in the mouse premotor cortex to probe the robustness of persistent neural representations during motor planning. We show that preparatory activity is remarkably robust to large-scale unilateral silencing: detailed neural dynamics that drive specific future movements were quickly and selectively restored by the network. Selectivity did not recover after bilateral silencing of the premotor cortex. Perturbations to one hemisphere are thus corrected by information from the other hemisphere. Corpus callosum bisections demonstrated that premotor cortex hemispheres can maintain preparatory activity independently. Redundancy across selectively coupled modules, as we observed in the premotor cortex, is a hallmark of robust control systems. Network models incorporating these principles show robustness that is consistent with data.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Nuo -- Daie, Kayvon -- Svoboda, Karel -- Druckmann, Shaul -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Apr 28;532(7600):459-64. doi: 10.1038/nature17643. Epub 2016 Apr 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia 20147, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27074502" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Brain Mapping ; Corpus Callosum/physiology ; Executive Function/*physiology ; Female ; Light ; Male ; Memory, Short-Term/physiology ; Mice ; Models, Neurological ; Motor Cortex/*cytology/*physiology/radiation effects ; Movement/*physiology/radiation effects ; Neurons/*physiology/radiation effects ; Optogenetics
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  • 181
    Publication Date: 2016-02-11
    Description: The enteric nervous system (ENS) is the largest component of the autonomic nervous system, with neuron numbers surpassing those present in the spinal cord. The ENS has been called the 'second brain' given its autonomy, remarkable neurotransmitter diversity and complex cytoarchitecture. Defects in ENS development are responsible for many human disorders including Hirschsprung disease (HSCR). HSCR is caused by the developmental failure of ENS progenitors to migrate into the gastrointestinal tract, particularly the distal colon. Human ENS development remains poorly understood owing to the lack of an easily accessible model system. Here we demonstrate the efficient derivation and isolation of ENS progenitors from human pluripotent stem (PS) cells, and their further differentiation into functional enteric neurons. ENS precursors derived in vitro are capable of targeted migration in the developing chick embryo and extensive colonization of the adult mouse colon. The in vivo engraftment and migration of human PS-cell-derived ENS precursors rescue disease-related mortality in HSCR mice (Ednrb(s-l/s-l)), although the mechanism of action remains unclear. Finally, EDNRB-null mutant ENS precursors enable modelling of HSCR-related migration defects, and the identification of pepstatin A as a candidate therapeutic target. Our study establishes the first, to our knowledge, human PS-cell-based platform for the study of human ENS development, and presents cell- and drug-based strategies for the treatment of HSCR.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4846424/" 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/PMC4846424/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fattahi, Faranak -- Steinbeck, Julius A -- Kriks, Sonja -- Tchieu, Jason -- Zimmer, Bastian -- Kishinevsky, Sarah -- Zeltner, Nadja -- Mica, Yvonne -- El-Nachef, Wael -- Zhao, Huiyong -- de Stanchina, Elisa -- Gershon, Michael D -- Grikscheit, Tracy C -- Chen, Shuibing -- Studer, Lorenz -- DP2 DK098093-01/DK/NIDDK NIH HHS/ -- NS15547/NS/NINDS NIH HHS/ -- P30 CA008748/CA/NCI NIH HHS/ -- R01 NS015547/NS/NINDS NIH HHS/ -- England -- Nature. 2016 Mar 3;531(7592):105-9. doi: 10.1038/nature16951. Epub 2016 Feb 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Center for Stem Cell Biology, New York, New York 10065, USA. ; Developmental Biology Program, Sloan-Kettering Institute for Cancer Research, New York, New York 10065, USA. ; Weill Graduate School of Medical Sciences of Cornell University, New York, New York 10065, USA. ; Molecular Pharmacology Program, New York, New York 10065, USA. ; Department of Pathology and Cell Biology, Columbia University, College of Physicians and Surgeons, New York, New York 10032, USA. ; Children's Hospital Los Angeles, Pediatric Surgery, Los Angeles, California 90027, USA. ; Department of Surgery, Weill Medical College of Cornell University, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26863197" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Cell Differentiation ; Cell Line ; *Cell Lineage ; Cell Movement ; Cell Separation ; *Cell- and Tissue-Based Therapy/methods ; Chick Embryo ; Colon/drug effects/pathology ; Disease Models, Animal ; Drug Discovery/*methods ; Enteric Nervous System/*pathology ; Female ; Gastrointestinal Tract/drug effects/pathology ; Hirschsprung Disease/*drug therapy/*pathology/therapy ; Humans ; Male ; Mice ; Neurons/drug effects/*pathology ; Pepstatins/metabolism ; Pluripotent Stem Cells/pathology ; Receptor, Endothelin B/metabolism ; Signal Transduction
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  • 182
    Publication Date: 2016-02-11
    Description: Mammalian Wnt proteins are believed to act as short-range signals, yet have not been previously visualized in vivo. Self-renewal, proliferation and differentiation are coordinated along a putative Wnt gradient in the intestinal crypt. Wnt3 is produced specifically by Paneth cells. Here we have generated an epitope-tagged, functional Wnt3 knock-in allele. Wnt3 covers basolateral membranes of neighbouring stem cells. In intestinal organoids, Wnt3-transfer involves direct contact between Paneth cells and stem cells. Plasma membrane localization requires surface expression of Frizzled receptors, which in turn is regulated by the transmembrane E3 ligases Rnf43/Znrf3 and their antagonists Lgr4-5/R-spondin. By manipulating Wnt3 secretion and by arresting stem-cell proliferation, we demonstrate that Wnt3 mainly travels away from its source in a cell-bound manner through cell division, and not through diffusion. We conclude that stem-cell membranes constitute a reservoir for Wnt proteins, while Frizzled receptor turnover and 'plasma membrane dilution' through cell division shape the epithelial Wnt3 gradient.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Farin, Henner F -- Jordens, Ingrid -- Mosa, Mohammed H -- Basak, Onur -- Korving, Jeroen -- Tauriello, Daniele V F -- de Punder, Karin -- Angers, Stephane -- Peters, Peter J -- Maurice, Madelon M -- Clevers, Hans -- England -- Nature. 2016 Feb 18;530(7590):340-3. doi: 10.1038/nature16937. Epub 2016 Feb 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, 3584CT Utrecht, the Netherlands. ; German Cancer Consortium (DKTK), 69120 Heidelberg, Germany. ; Georg-Speyer-Haus, Institute for Tumor Biology and Experimental Therapy, 60596 Frankfurt am Main, Germany. ; German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany. ; Department of Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, 3584CX Utrecht, the Netherlands. ; The Maastricht Multimodal Molecular Imaging institute, Maastricht University, 6229ER Maastricht, the Netherlands. ; Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario M5S 3M2, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26863187" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Cell Adhesion ; Cell Division ; Cell Membrane/*metabolism ; Diffusion ; Female ; Frizzled Receptors/metabolism ; Gene Knock-In Techniques ; Intercellular Signaling Peptides and Proteins/metabolism ; Intestinal Mucosa/*cytology ; Male ; Mice ; Organoids/cytology/metabolism ; Paneth Cells/cytology/metabolism ; Receptors, G-Protein-Coupled/metabolism ; *Stem Cell Niche ; Stem Cells/*cytology/*metabolism ; Ubiquitin-Protein Ligases/metabolism ; *Wnt Signaling Pathway ; Wnt3 Protein/genetics/*metabolism/secretion
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  • 183
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    Unknown
    Nature Publishing Group (NPG)
    Publication Date: 2016-03-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lim, XiaoZhi -- England -- Nature. 2016 Mar 3;531(7592):26-8. doi: 10.1038/531026a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26935679" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Color ; *Fluorescence ; Humans ; Mice ; Nanomedicine/methods/trends ; Nanotechnology/methods/*trends ; Neoplasms/metabolism/pathology/surgery/therapy ; Quantum Dots/*analysis/chemistry ; Staining and Labeling/methods/trends ; Television/instrumentation
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  • 184
    Publication Date: 2016-04-14
    Description: Circadian clocks are fundamental to the biology of most eukaryotes, coordinating behaviour and physiology to resonate with the environmental cycle of day and night through complex networks of clock-controlled genes. A fundamental knowledge gap exists, however, between circadian gene expression cycles and the biochemical mechanisms that ultimately facilitate circadian regulation of cell biology. Here we report circadian rhythms in the intracellular concentration of magnesium ions, [Mg(2+)]i, which act as a cell-autonomous timekeeping component to determine key clock properties both in a human cell line and in a unicellular alga that diverged from each other more than 1 billion years ago. Given the essential role of Mg(2+) as a cofactor for ATP, a functional consequence of [Mg(2+)]i oscillations is dynamic regulation of cellular energy expenditure over the daily cycle. Mechanistically, we find that these rhythms provide bilateral feedback linking rhythmic metabolism to clock-controlled gene expression. The global regulation of nucleotide triphosphate turnover by intracellular Mg(2+) availability has potential to impact upon many of the cell's more than 600 MgATP-dependent enzymes and every cellular system where MgNTP hydrolysis becomes rate limiting. Indeed, we find that circadian control of translation by mTOR is regulated through [Mg(2+)]i oscillations. It will now be important to identify which additional biological processes are subject to this form of regulation in tissues of multicellular organisms such as plants and humans, in the context of health and disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feeney, Kevin A -- Hansen, Louise L -- Putker, Marrit -- Olivares-Yanez, Consuelo -- Day, Jason -- Eades, Lorna J -- Larrondo, Luis F -- Hoyle, Nathaniel P -- O'Neill, John S -- van Ooijen, Gerben -- 093734/Z/10/Z/Wellcome Trust/United Kingdom -- MC_UP_1201/4/Medical Research Council/United Kingdom -- England -- Nature. 2016 Apr 21;532(7599):375-9. doi: 10.1038/nature17407. Epub 2016 Apr 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Laboratory for Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge CB2 0QH, UK. ; School of Biological Sciences, University of Edinburgh, Max Born Crescent, Edinburgh EH9 3BF, UK. ; Millennium Nucleus for Fungal Integrative and Synthetic Biology, Departamento de Genetica Molecular y Microbiologia, Facultad de Ciencias Biologicas, Pontificia Universidad Catolica de Chile, Casilla 114-D, Santiago, Chile. ; Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK. ; School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27074515" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Animals ; Cell Line ; Chlorophyta/cytology/metabolism ; Circadian Clocks/genetics/*physiology ; Circadian Rhythm/genetics/*physiology ; *Energy Metabolism ; Feedback, Physiological ; Gene Expression Regulation ; Humans ; Intracellular Space/metabolism ; Magnesium/*metabolism ; Male ; Mice ; TOR Serine-Threonine Kinases/metabolism ; Time Factors
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  • 185
    Publication Date: 2016-04-07
    Description: Microglia are damage sensors for the central nervous system (CNS), and the phagocytes responsible for routine non-inflammatory clearance of dead brain cells. Here we show that the TAM receptor tyrosine kinases Mer and Axl regulate these microglial functions. We find that adult mice deficient in microglial Mer and Axl exhibit a marked accumulation of apoptotic cells specifically in neurogenic regions of the CNS, and that microglial phagocytosis of the apoptotic cells generated during adult neurogenesis is normally driven by both TAM receptor ligands Gas6 and protein S. Using live two-photon imaging, we demonstrate that the microglial response to brain damage is also TAM-regulated, as TAM-deficient microglia display reduced process motility and delayed convergence to sites of injury. Finally, we show that microglial expression of Axl is prominently upregulated in the inflammatory environment that develops in a mouse model of Parkinson's disease. Together, these results establish TAM receptors as both controllers of microglial physiology and potential targets for therapeutic intervention in CNS disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fourgeaud, Lawrence -- Traves, Paqui G -- Tufail, Yusuf -- Leal-Bailey, Humberto -- Lew, Erin D -- Burrola, Patrick G -- Callaway, Perri -- Zagorska, Anna -- Rothlin, Carla V -- Nimmerjahn, Axel -- Lemke, Greg -- DP2 NS083038/DP/NCCDPHP CDC HHS/ -- DP2 NS083038/NS/NINDS NIH HHS/ -- P30CA014195/CA/NCI NIH HHS/ -- R01 AI089824/AI/NIAID NIH HHS/ -- R01 AI101400/AI/NIAID NIH HHS/ -- R01 NS085296/NS/NINDS NIH HHS/ -- R01 NS085938/NS/NINDS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Apr 14;532(7598):240-4. doi: 10.1038/nature17630. Epub 2016 Apr 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA. ; Instituto de Investigaciones Biomedicas Alberto Sols (CSIC-UAM), Madrid 28029, Spain. ; Waitt Advanced Biophotonics Center, The Salk Institute for Biological Studies, La Jolla, California 92037, USA. ; Joint Master in Neuroscience Program, University of Strasbourg, Strasbourg 67081, France. ; Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Immunobiology and Microbial Pathogenesis Laboratory, The 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/27049947" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Brain/blood supply/cytology/*metabolism/pathology ; Brain Injuries/metabolism/pathology ; Disease Models, Animal ; Female ; Inflammation/metabolism ; Intercellular Signaling Peptides and Proteins/metabolism ; Ligands ; Male ; Mice ; Microglia/*physiology ; Neurogenesis ; Parkinson Disease/metabolism ; Phagocytosis ; Protein S/metabolism ; Proto-Oncogene Proteins/deficiency/*metabolism ; Receptor Protein-Tyrosine Kinases/deficiency/*metabolism ; Signal Transduction ; Stem Cell Niche ; Up-Regulation
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  • 186
    Publication Date: 2016-03-31
    Description: Transected axons fail to regrow in the mature central nervous system. Astrocytic scars are widely regarded as causal in this failure. Here, using three genetically targeted loss-of-function manipulations in adult mice, we show that preventing astrocyte scar formation, attenuating scar-forming astrocytes, or ablating chronic astrocytic scars all failed to result in spontaneous regrowth of transected corticospinal, sensory or serotonergic axons through severe spinal cord injury (SCI) lesions. By contrast, sustained local delivery via hydrogel depots of required axon-specific growth factors not present in SCI lesions, plus growth-activating priming injuries, stimulated robust, laminin-dependent sensory axon regrowth past scar-forming astrocytes and inhibitory molecules in SCI lesions. Preventing astrocytic scar formation significantly reduced this stimulated axon regrowth. RNA sequencing revealed that astrocytes and non-astrocyte cells in SCI lesions express multiple axon-growth-supporting molecules. Our findings show that contrary to the prevailing dogma, astrocyte scar formation aids rather than prevents central nervous system axon regeneration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, Mark A -- Burda, Joshua E -- Ren, Yilong -- Ao, Yan -- O'Shea, Timothy M -- Kawaguchi, Riki -- Coppola, Giovanni -- Khakh, Baljit S -- Deming, Timothy J -- Sofroniew, Michael V -- MH099559A/MH/NIMH NIH HHS/ -- MH104069/MH/NIMH NIH HHS/ -- NS057624/NS/NINDS NIH HHS/ -- NS060677/NS/NINDS NIH HHS/ -- NS084030/NS/NINDS NIH HHS/ -- P30 NS062691/NS/NINDS NIH HHS/ -- England -- Nature. 2016 Apr 14;532(7598):195-200. doi: 10.1038/nature17623. Epub 2016 Mar 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, California 90095-1763, USA. ; Departments of Psychiatry and Neurology, David Geffen School of Medicine, University of California, Los Angeles, California 90095-1761, USA. ; Department of Physiology, David Geffen School of Medicine, University of California, Los Angeles, California 90095-1751, USA. ; Departments of Bioengineering, Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1600, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27027288" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/*pathology ; Axons/*physiology ; Central Nervous System/cytology/*pathology/*physiology ; Chondroitin Sulfate Proteoglycans/biosynthesis ; Cicatrix/*pathology/prevention & control ; Female ; Genomics ; Mice ; *Models, Biological ; *Nerve Regeneration ; Reproducibility of Results ; Spinal Cord Injuries/genetics/pathology
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  • 187
    Publication Date: 2016-03-24
    Description: Targeted, temporally regulated neural modulation is invaluable in determining the physiological roles of specific neural populations or circuits. Here we describe a system for non-invasive, temporal activation or inhibition of neuronal activity in vivo and its use to study central nervous system control of glucose homeostasis and feeding in mice. We are able to induce neuronal activation remotely using radio waves or magnetic fields via Cre-dependent expression of a GFP-tagged ferritin fusion protein tethered to the cation-conducting transient receptor potential vanilloid 1 (TRPV1) by a camelid anti-GFP antibody (anti-GFP-TRPV1). Neuronal inhibition via the same stimuli is achieved by mutating the TRPV1 pore, rendering the channel chloride-permeable. These constructs were targeted to glucose-sensing neurons in the ventromedial hypothalamus in glucokinase-Cre mice, which express Cre in glucose-sensing neurons. Acute activation of glucose-sensing neurons in this region increases plasma glucose and glucagon, lowers insulin levels and stimulates feeding, while inhibition reduces blood glucose, raises insulin levels and suppresses feeding. These results suggest that pancreatic hormones function as an effector mechanism of central nervous system circuits controlling blood glucose and behaviour. The method we employ obviates the need for permanent implants and could potentially be applied to study other neural processes or used to regulate other, even dispersed, cell types.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stanley, Sarah A -- Kelly, Leah -- Latcha, Kaamashri N -- Schmidt, Sarah F -- Yu, Xiaofei -- Nectow, Alexander R -- Sauer, Jeremy -- Dyke, Jonathan P -- Dordick, Jonathan S -- Friedman, Jeffrey M -- GM067545/GM/NIGMS NIH HHS/ -- GM095654/GM/NIGMS NIH HHS/ -- MH105941/MH/NIMH NIH HHS/ -- U01 MH105941/MH/NIMH NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2016 Mar 31;531(7596):647-50. doi: 10.1038/nature17183. Epub 2016 Mar 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Genetics, Rockefeller University, New York, New York 10065, USA. ; Department of Chemical &Biological Engineering, Center for Biotechnology &Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA. ; Department of Radiology, Weill Cornell Medical College, New York, New York 10065, USA. ; Howard Hughes Medical Institute, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27007848" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Glucose/*metabolism ; Eating/*physiology ; Ferritins/genetics/metabolism ; Glucagon/blood ; Glucokinase/metabolism ; Homeostasis ; Hypoglycemia/metabolism ; Insulin/blood ; Integrases/metabolism ; *Magnetic Fields ; Mice ; Neural Inhibition ; Neurons/*physiology ; Pancreatic Hormones/metabolism ; *Radio Waves ; Recombinant Fusion Proteins/genetics/metabolism ; TRPV Cation Channels/genetics/metabolism ; Time Factors ; Ventromedial Hypothalamic Nucleus/*cytology/*physiology
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  • 188
    Publication Date: 2016-04-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arnold, Carrie -- England -- Nature. 2016 Apr 21;532(7599):292. doi: 10.1038/nature.2016.19755.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27111610" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibody Specificity/immunology ; Antivenins/*biosynthesis/economics/genetics/immunology ; Horses/immunology ; Humans ; Immunization, Passive ; Mice ; Snake Bites/immunology/mortality/*therapy ; Snake Venoms/*antagonists & inhibitors/genetics/immunology ; Synthetic Biology/*methods/*trends
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  • 189
    Publication Date: 2016-01-21
    Description: Regulatory T (Treg) cells expressing the transcription factor Foxp3 have a pivotal role in maintaining immunological self-tolerance; yet, excessive Treg cell activities suppress anti-tumour immune responses. Compared to the resting Treg (rTreg) cell phenotype in secondary lymphoid organs, Treg cells in non-lymphoid tissues exhibit an activated Treg (aTreg) cell phenotype. However, the function of aTreg cells and whether their generation can be manipulated are largely unexplored. Here we show that the transcription factor Foxo1, previously demonstrated to promote Treg cell suppression of lymphoproliferative diseases, has an unexpected function in inhibiting aTreg-cell-mediated immune tolerance in mice. We find that aTreg cells turned over at a slower rate than rTreg cells, but were not locally maintained in tissues. aTreg cell differentiation was associated with repression of Foxo1-dependent gene transcription, concomitant with reduced Foxo1 expression, cytoplasmic localization and enhanced phosphorylation at the Akt sites. Treg-cell-specific expression of an Akt-insensitive Foxo1 mutant prevented downregulation of lymphoid organ homing molecules, and impeded Treg cell homing to non-lymphoid organs, causing CD8(+) T-cell-mediated autoimmune diseases. Compared to Treg cells from healthy tissues, tumour-infiltrating Treg cells downregulated Foxo1 target genes more substantially. Expression of the Foxo1 mutant at a lower dose was sufficient to deplete tumour-associated Treg cells, activate effector CD8(+) T cells, and inhibit tumour growth without inflicting autoimmunity. Thus, Foxo1 inactivation is essential for the migration of aTreg cells that have a crucial function in suppressing CD8(+) T-cell responses; and the Foxo signalling pathway in Treg cells can be titrated to break tumour immune tolerance preferentially.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Luo, Chong T -- Liao, Will -- Dadi, Saida -- Toure, Ahmed -- Li, Ming O -- P30 CA008748/CA/NCI NIH HHS/ -- R01 AI102888-01A1/AI/NIAID NIH HHS/ -- England -- Nature. 2016 Jan 28;529(7587):532-6. doi: 10.1038/nature16486. Epub 2016 Jan 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Louis V. Gerstner Jr Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; New York Genome Center, New York, New York 10013, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26789248" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoimmunity/*immunology ; CD8-Positive T-Lymphocytes/*immunology ; Cell Differentiation ; Cell Movement/immunology ; Down-Regulation ; Female ; Forkhead Transcription Factors/biosynthesis/genetics/*metabolism ; Immune Tolerance/*immunology ; Lymphocyte Activation ; Lymphocytes, Tumor-Infiltrating/cytology/immunology/metabolism ; Male ; Mice ; Mutation ; Neoplasms/*immunology ; Phosphorylation ; Signal Transduction/immunology ; T-Lymphocytes, Regulatory/cytology/*immunology/*metabolism ; Transcription, Genetic
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  • 190
    Publication Date: 2015-12-25
    Description: Colorectal cancer remains a major unmet medical need, prompting large-scale genomics efforts in the field to identify molecular drivers for which targeted therapies might be developed. We previously reported the identification of recurrent translocations in R-spondin genes present in a subset of colorectal tumours. Here we show that targeting RSPO3 in PTPRK-RSPO3-fusion-positive human tumour xenografts inhibits tumour growth and promotes differentiation. Notably, genes expressed in the stem-cell compartment of the intestine were among those most sensitive to anti-RSPO3 treatment. This observation, combined with functional assays, suggests that a stem-cell compartment drives PTPRK-RSPO3 colorectal tumour growth and indicates that the therapeutic targeting of stem-cell properties within tumours may be a clinically relevant approach for the treatment of colorectal tumours.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Storm, Elaine E -- Durinck, Steffen -- de Sousa e Melo, Felipe -- Tremayne, Jarrod -- Kljavin, Noelyn -- Tan, Christine -- Ye, Xiaofen -- Chiu, Cecilia -- Pham, Thinh -- Hongo, Jo-Anne -- Bainbridge, Travis -- Firestein, Ron -- Blackwood, Elizabeth -- Metcalfe, Ciara -- Stawiski, Eric W -- Yauch, Robert L -- Wu, Yan -- de Sauvage, Frederic J -- England -- Nature. 2016 Jan 7;529(7584):97-100. doi: 10.1038/nature16466. Epub 2015 Dec 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Molecular Biology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Translational Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Antibody Engineering, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Discovery Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Research Pathology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Protein Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26700806" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/immunology/pharmacology/therapeutic use ; Cell Differentiation/*drug effects ; Cell Division/drug effects ; Colorectal Neoplasms/*drug therapy/metabolism/*pathology ; Disease Progression ; Female ; Gene Expression Regulation/drug effects ; Humans ; Intestines/cytology/drug effects/metabolism/pathology ; Male ; Mice ; *Molecular Targeted Therapy ; Neoplastic Stem Cells/*drug effects/metabolism/*pathology ; Receptor-Like Protein Tyrosine Phosphatases, Class 2/*metabolism ; Stem Cells/cytology/metabolism ; Thrombospondins/antagonists & inhibitors/immunology/*metabolism ; Xenograft Model Antitumor Assays
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  • 191
    Publication Date: 2016-02-26
    Description: Integrated genomic analysis of 456 pancreatic ductal adenocarcinomas identified 32 recurrently mutated genes that aggregate into 10 pathways: KRAS, TGF-beta, WNT, NOTCH, ROBO/SLIT signalling, G1/S transition, SWI-SNF, chromatin modification, DNA repair and RNA processing. Expression analysis defined 4 subtypes: (1) squamous; (2) pancreatic progenitor; (3) immunogenic; and (4) aberrantly differentiated endocrine exocrine (ADEX) that correlate with histopathological characteristics. Squamous tumours are enriched for TP53 and KDM6A mutations, upregulation of the TP63N transcriptional network, hypermethylation of pancreatic endodermal cell-fate determining genes and have a poor prognosis. Pancreatic progenitor tumours preferentially express genes involved in early pancreatic development (FOXA2/3, PDX1 and MNX1). ADEX tumours displayed upregulation of genes that regulate networks involved in KRAS activation, exocrine (NR5A2 and RBPJL), and endocrine differentiation (NEUROD1 and NKX2-2). Immunogenic tumours contained upregulated immune networks including pathways involved in acquired immune suppression. These data infer differences in the molecular evolution of pancreatic cancer subtypes and identify opportunities for therapeutic development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bailey, Peter -- Chang, David K -- Nones, Katia -- Johns, Amber L -- Patch, Ann-Marie -- Gingras, Marie-Claude -- Miller, David K -- Christ, Angelika N -- Bruxner, Tim J C -- Quinn, Michael C -- Nourse, Craig -- Murtaugh, L Charles -- Harliwong, Ivon -- Idrisoglu, Senel -- Manning, Suzanne -- Nourbakhsh, Ehsan -- Wani, Shivangi -- Fink, Lynn -- Holmes, Oliver -- Chin, Venessa -- Anderson, Matthew J -- Kazakoff, Stephen -- Leonard, Conrad -- Newell, Felicity -- Waddell, Nick -- Wood, Scott -- Xu, Qinying -- Wilson, Peter J -- Cloonan, Nicole -- Kassahn, Karin S -- Taylor, Darrin -- Quek, Kelly -- Robertson, Alan -- Pantano, Lorena -- Mincarelli, Laura -- Sanchez, Luis N -- Evers, Lisa -- Wu, Jianmin -- Pinese, Mark -- Cowley, Mark J -- Jones, Marc D -- Colvin, Emily K -- Nagrial, Adnan M -- Humphrey, Emily S -- Chantrill, Lorraine A -- Mawson, Amanda -- Humphris, Jeremy -- Chou, Angela -- Pajic, Marina -- Scarlett, Christopher J -- Pinho, Andreia V -- Giry-Laterriere, Marc -- Rooman, Ilse -- Samra, Jaswinder S -- Kench, James G -- Lovell, Jessica A -- Merrett, Neil D -- Toon, Christopher W -- Epari, Krishna -- Nguyen, Nam Q -- Barbour, Andrew -- Zeps, Nikolajs -- Moran-Jones, Kim -- Jamieson, Nigel B -- Graham, Janet S -- Duthie, Fraser -- Oien, Karin -- Hair, Jane -- Grutzmann, Robert -- Maitra, Anirban -- Iacobuzio-Donahue, Christine A -- Wolfgang, Christopher L -- Morgan, Richard A -- Lawlor, Rita T -- Corbo, Vincenzo -- Bassi, Claudio -- Rusev, Borislav -- Capelli, Paola -- Salvia, Roberto -- Tortora, Giampaolo -- Mukhopadhyay, Debabrata -- Petersen, Gloria M -- Australian Pancreatic Cancer Genome Initiative -- Munzy, Donna M -- Fisher, William E -- Karim, Saadia A -- Eshleman, James R -- Hruban, Ralph H -- Pilarsky, Christian -- Morton, Jennifer P -- Sansom, Owen J -- Scarpa, Aldo -- Musgrove, Elizabeth A -- Bailey, Ulla-Maja Hagbo -- Hofmann, Oliver -- Sutherland, Robert L -- Wheeler, David A -- Gill, Anthony J -- Gibbs, Richard A -- Pearson, John V -- Waddell, Nicola -- Biankin, Andrew V -- Grimmond, Sean M -- 103721/Z/14/Z/Wellcome Trust/United Kingdom -- A12481/Cancer Research UK/United Kingdom -- A18076/Cancer Research UK/United Kingdom -- C29717/A17263/Cancer Research UK/United Kingdom -- England -- Nature. 2016 Mar 3;531(7592):47-52. doi: 10.1038/nature16965. Epub 2016 Feb 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Queensland Centre for Medical Genomics, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia. ; Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK. ; The Kinghorn Cancer Centre, 370 Victoria St, Darlinghurst, and the Cancer Research Program, Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, New South Wales 2010, Australia. ; Department of Surgery, Bankstown Hospital, Eldridge Road, Bankstown, Sydney, New South Wales 2200, Australia. ; South Western Sydney Clinical School, Faculty of Medicine, University of New South Wales, Liverpool, New South Wales 2170, Australia. ; QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia. ; Department of Molecular and Human Genetics, Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas 77030, USA. ; Michael DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, USA. ; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas 77030, USA. ; Department of Human Genetics, University of Utah, Salt Lake City, Utah 84112, USA. ; Genetic and Molecular Pathology, SA Pathology, Adelaide, South Australia 5000, Australia. ; School of Biological Sciences, The University of Adelaide, Adelaide, South Australia 5000, Australia. ; Harvard Chan Bioinformatics Core, Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA. ; Macarthur Cancer Therapy Centre, Campbelltown Hospital, New South Wales 2560, Australia. ; Department of Pathology. SydPath, St Vincent's Hospital, Sydney, NSW 2010, Australia. ; St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, New South Wales 2052, Australia. ; School of Environmental &Life Sciences, University of Newcastle, Ourimbah, New South Wales 2258, Australia. ; Department of Surgery, Royal North Shore Hospital, St Leonards, Sydney, New South Wales 2065, Australia. ; University of Sydney, Sydney, New South Wales 2006, Australia. ; Tissue Pathology and Diagnostic Oncology, Royal Prince Alfred Hospital, Camperdown New South Wales 2050, Australia. ; School of Medicine, University of Western Sydney, Penrith, New South Wales 2175, Australia. ; Fiona Stanley Hospital, Robin Warren Drive, Murdoch, Western Australia 6150, Australia. ; Department of Gastroenterology, Royal Adelaide Hospital, North Terrace, Adelaide, South Australia 5000, Australia. ; Department of Surgery, Princess Alexandra Hospital, Ipswich Rd, Woollongabba, Queensland 4102, Australia. ; School of Surgery M507, University of Western Australia, 35 Stirling Hwy, Nedlands 6009, Australia and St John of God Pathology, 12 Salvado Rd, Subiaco, Western Australia 6008, Australia. ; Academic Unit of Surgery, School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Glasgow G4 OSF, UK. ; West of Scotland Pancreatic Unit, Glasgow Royal Infirmary, Glasgow G31 2ER, UK. ; Department of Medical Oncology, Beatson West of Scotland Cancer Centre, 1053 Great Western Road, Glasgow G12 0YN, UK. ; Department of Pathology, Southern General Hospital, Greater Glasgow &Clyde NHS, Glasgow G51 4TF, UK. ; GGC Bio-repository, Pathology Department, Southern General Hospital, 1345 Govan Road, Glasgow G51 4TY, UK. ; Department of Surgery, TU Dresden, Fetscherstr. 74, 01307 Dresden, Germany. ; Departments of Pathology and Translational Molecular Pathology, UT MD Anderson Cancer Center, Houston Texas 77030, USA. ; The David M. Rubenstein Pancreatic Cancer Research Center and Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA. ; Department of Surgery, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, USA. ; ARC-Net Applied Research on Cancer Centre, University and Hospital Trust of Verona, Verona 37134, Italy. ; Department of Pathology and Diagnostics, University of Verona, Verona 37134, Italy. ; Department of Surgery, Pancreas Institute, University and Hospital Trust of Verona, Verona 37134, Italy. ; Department of Medical Oncology, Comprehensive Cancer Centre, University and Hospital Trust of Verona, Verona 37134, Italy. ; Mayo Clinic, Rochester, Minnesota 55905, USA. ; Elkins Pancreas Center, Baylor College of Medicine, One Baylor Plaza, MS226, Houston, Texas 77030-3411, USA. ; Cancer Research UK Beatson Institute, Glasgow G61 1BD, UK. ; Institute for Cancer Science, University of Glasgow, Glasgow G12 8QQ, UK. ; University of Melbourne, Parkville, Victoria 3010, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26909576" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basic Helix-Loop-Helix Transcription Factors/genetics ; Carcinoma, Pancreatic ; Ductal/classification/genetics/immunology/metabolism/pathology ; Cell Line, Tumor ; DNA Methylation ; DNA-Binding Proteins/genetics ; Gene Expression Regulation, Neoplastic ; Gene Regulatory Networks ; Genes, Neoplasm/*genetics ; Genome, Human/*genetics ; *Genomics ; Hepatocyte Nuclear Factor 3-beta/genetics ; Hepatocyte Nuclear Factor 3-gamma/genetics ; Histone Demethylases/genetics ; Homeodomain Proteins/genetics ; Humans ; Mice ; Mutation/*genetics ; Nuclear Proteins/genetics ; Pancreatic Neoplasms/*classification/*genetics/immunology/metabolism/pathology ; Prognosis ; Receptors, Cytoplasmic and Nuclear/genetics ; Survival Analysis ; Trans-Activators/genetics ; Transcription Factors/genetics ; Transcription, Genetic ; Transcriptome ; Tumor Suppressor Protein p53/genetics ; Tumor Suppressor Proteins/genetics
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  • 192
    Publication Date: 2016-03-10
    Description: Inhibitory neurons regulate the adaptation of neural circuits to sensory experience, but the molecular mechanisms by which experience controls the connectivity between different types of inhibitory neuron to regulate cortical plasticity are largely unknown. Here we show that exposure of dark-housed mice to light induces a gene program in cortical vasoactive intestinal peptide (VIP)-expressing neurons that is markedly distinct from that induced in excitatory neurons and other subtypes of inhibitory neuron. We identify Igf1 as one of several activity-regulated genes that are specific to VIP neurons, and demonstrate that IGF1 functions cell-autonomously in VIP neurons to increase inhibitory synaptic input onto these neurons. Our findings further suggest that in cortical VIP neurons, experience-dependent gene transcription regulates visual acuity by activating the expression of IGF1, thus promoting the inhibition of disinhibitory neurons and affecting inhibition onto cortical pyramidal neurons.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4823817/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4823817/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mardinly, A R -- Spiegel, I -- Patrizi, A -- Centofante, E -- Bazinet, J E -- Tzeng, C P -- Mandel-Brehm, C -- Harmin, D A -- Adesnik, H -- Fagiolini, M -- Greenberg, M E -- P01 NS047572/NS/NINDS NIH HHS/ -- P30 HD018655/HD/NICHD NIH HHS/ -- R01 NS028829/NS/NINDS NIH HHS/ -- R37 NS028829/NS/NINDS NIH HHS/ -- England -- Nature. 2016 Mar 17;531(7594):371-5. doi: 10.1038/nature17187. Epub 2016 Mar 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, University of California Berkeley, 205 Life Sciences Addition, Berkeley, California 94720, USA. ; Department of Neurobiology, Harvard Medical School, 220 Longwood Ave, Boston, Massachusetts 02115, USA. ; FM Kirby Neurobiology Center, Boston Children's Hospital, 3 Blackfan Circle, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26958833" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Insulin-Like Growth Factor I/*metabolism ; Male ; Mice ; Mice, Inbred C57BL ; *Neural Inhibition ; Neural Pathways ; Neuronal Plasticity ; Neurons/cytology/*metabolism/secretion ; Pyramidal Cells/metabolism ; Synapses/metabolism ; Vasoactive Intestinal Peptide/*metabolism ; Vision, Ocular/physiology ; Visual Cortex/*cytology/*physiology
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  • 193
    Publication Date: 2015-06-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibney, Elizabeth -- England -- Nature. 2015 Jun 11;522(7555):137-8. doi: 10.1038/522137a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26062488" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*cytology/physiology ; Humans ; *Implants, Experimental ; Injections, Intraventricular ; Mice ; Nanotechnology/*instrumentation/*methods ; Neurons/*physiology ; Neurosciences/*instrumentation/*methods
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  • 194
    Publication Date: 2015-04-02
    Description: In the context of most induced pluripotent stem (iPS) cell reprogramming methods, heterogeneous populations of non-productive and staggered productive intermediates arise at different reprogramming time points. Despite recent reports claiming substantially increased reprogramming efficiencies using genetically modified donor cells, prospectively isolating distinct reprogramming intermediates remains an important goal to decipher reprogramming mechanisms. Previous attempts to identify surface markers of intermediate cell populations were based on the assumption that, during reprogramming, cells progressively lose donor cell identity and gradually acquire iPS cell properties. Here we report that iPS cell and epithelial markers, such as SSEA1 and EpCAM, respectively, are not predictive of reprogramming during early phases. Instead, in a systematic functional surface marker screen, we find that early reprogramming-prone cells express a unique set of surface markers, including CD73, CD49d and CD200, that are absent in both fibroblasts and iPS cells. Single-cell mass cytometry and prospective isolation show that these distinct intermediates are transient and bridge the gap between donor cell silencing and pluripotency marker acquisition during the early, presumably stochastic, reprogramming phase. Expression profiling reveals early upregulation of the transcriptional regulators Nr0b1 and Etv5 in this reprogramming state, preceding activation of key pluripotency regulators such as Rex1 (also known as Zfp42), Dppa2, Nanog and Sox2. Both factors are required for the generation of the early intermediate state and fully reprogrammed iPS cells, and thus represent some of the earliest known regulators of iPS cell induction. Our study deconvolutes the first steps in a hierarchical series of events that lead to pluripotency acquisition.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4441548/" 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/PMC4441548/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lujan, Ernesto -- Zunder, Eli R -- Ng, Yi Han -- Goronzy, Isabel N -- Nolan, Garry P -- Wernig, Marius -- F32 GM093508-01/GM/NIGMS NIH HHS/ -- RC4 NS073015/NS/NINDS NIH HHS/ -- England -- Nature. 2015 May 21;521(7552):352-6. doi: 10.1038/nature14274. Epub 2015 Apr 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California 94305, USA [2] Department of Genetics, Stanford University, Stanford, California 94305, USA [3] Department of Pathology, Stanford University, Stanford, California 94305, USA. ; Baxter Laboratory in Stem Cell Biology, Department of Microbiology and Immunology, Stanford University, Stanford, California 94305, USA. ; 1] Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California 94305, USA [2] Department of Pathology, Stanford University, Stanford, California 94305, USA [3] Department of Microbiology and Immunology, Stanford University, Stanford, California 94305, USA. ; 1] Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California 94305, USA [2] Department of Pathology, Stanford University, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25830878" target="_blank"〉PubMed〈/a〉
    Keywords: 5'-Nucleotidase/metabolism ; Animals ; Antigens, CD/metabolism ; Antigens, CD15/metabolism ; Antigens, Neoplasm/metabolism ; Biomarkers/analysis/metabolism ; Cell Adhesion Molecules/metabolism ; *Cell Separation ; Cellular Reprogramming/*physiology ; DAX-1 Orphan Nuclear Receptor/metabolism ; DNA-Binding Proteins/metabolism ; Epithelial Cells/metabolism ; Fibroblasts/cytology/metabolism ; *Flow Cytometry ; Gene Expression Profiling ; Homeodomain Proteins/metabolism ; Induced Pluripotent Stem Cells/*cytology/*metabolism ; Integrin alpha4/metabolism ; Mice ; Nuclear Proteins/metabolism ; SOXB1 Transcription Factors/metabolism ; Time Factors ; Transcription Factors/analysis/*metabolism
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  • 195
    Publication Date: 2015-07-23
    Description: G-protein-coupled receptors (GPCRs) signal primarily through G proteins or arrestins. Arrestin binding to GPCRs blocks G protein interaction and redirects signalling to numerous G-protein-independent pathways. Here we report the crystal structure of a constitutively active form of human rhodopsin bound to a pre-activated form of the mouse visual arrestin, determined by serial femtosecond X-ray laser crystallography. Together with extensive biochemical and mutagenesis data, the structure reveals an overall architecture of the rhodopsin-arrestin assembly in which rhodopsin uses distinct structural elements, including transmembrane helix 7 and helix 8, to recruit arrestin. Correspondingly, arrestin adopts the pre-activated conformation, with a approximately 20 degrees rotation between the amino and carboxy domains, which opens up a cleft in arrestin to accommodate a short helix formed by the second intracellular loop of rhodopsin. This structure provides a basis for understanding GPCR-mediated arrestin-biased signalling and demonstrates the power of X-ray lasers for advancing the frontiers of structural biology.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4521999/" 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/PMC4521999/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kang, Yanyong -- Zhou, X Edward -- Gao, Xiang -- He, Yuanzheng -- Liu, Wei -- Ishchenko, Andrii -- Barty, Anton -- White, Thomas A -- Yefanov, Oleksandr -- Han, Gye Won -- Xu, Qingping -- de Waal, Parker W -- Ke, Jiyuan -- Tan, M H Eileen -- Zhang, Chenghai -- Moeller, Arne -- West, Graham M -- Pascal, Bruce D -- Van Eps, Ned -- Caro, Lydia N -- Vishnivetskiy, Sergey A -- Lee, Regina J -- Suino-Powell, Kelly M -- Gu, Xin -- Pal, Kuntal -- Ma, Jinming -- Zhi, Xiaoyong -- Boutet, Sebastien -- Williams, Garth J -- Messerschmidt, Marc -- Gati, Cornelius -- Zatsepin, Nadia A -- Wang, Dingjie -- James, Daniel -- Basu, Shibom -- Roy-Chowdhury, Shatabdi -- Conrad, Chelsie E -- Coe, Jesse -- Liu, Haiguang -- Lisova, Stella -- Kupitz, Christopher -- Grotjohann, Ingo -- Fromme, Raimund -- Jiang, Yi -- Tan, Minjia -- Yang, Huaiyu -- Li, Jun -- Wang, Meitian -- Zheng, Zhong -- Li, Dianfan -- Howe, Nicole -- Zhao, Yingming -- Standfuss, Jorg -- Diederichs, Kay -- Dong, Yuhui -- Potter, Clinton S -- Carragher, Bridget -- Caffrey, Martin -- Jiang, Hualiang -- Chapman, Henry N -- Spence, John C H -- Fromme, Petra -- Weierstall, Uwe -- Ernst, Oliver P -- Katritch, Vsevolod -- Gurevich, Vsevolod V -- Griffin, Patrick R -- Hubbell, Wayne L -- Stevens, Raymond C -- Cherezov, Vadim -- Melcher, Karsten -- Xu, H Eric -- DK071662/DK/NIDDK NIH HHS/ -- EY005216/EY/NEI NIH HHS/ -- EY011500/EY/NEI NIH HHS/ -- GM073197/GM/NIGMS NIH HHS/ -- GM077561/GM/NIGMS NIH HHS/ -- GM095583/GM/NIGMS NIH HHS/ -- GM097463/GM/NIGMS NIH HHS/ -- GM102545/GM/NIGMS NIH HHS/ -- GM103310/GM/NIGMS NIH HHS/ -- GM104212/GM/NIGMS NIH HHS/ -- GM108635/GM/NIGMS NIH HHS/ -- P30EY000331/EY/NEI NIH HHS/ -- P41 GM103310/GM/NIGMS NIH HHS/ -- P41GM103393/GM/NIGMS NIH HHS/ -- P41RR001209/RR/NCRR NIH HHS/ -- P50 GM073197/GM/NIGMS NIH HHS/ -- P50 GM073210/GM/NIGMS NIH HHS/ -- R01 DK066202/DK/NIDDK NIH HHS/ -- R01 DK071662/DK/NIDDK NIH HHS/ -- R01 EY011500/EY/NEI NIH HHS/ -- R01 GM087413/GM/NIGMS NIH HHS/ -- R01 GM109955/GM/NIGMS NIH HHS/ -- S10 RR027270/RR/NCRR NIH HHS/ -- U54 GM094586/GM/NIGMS NIH HHS/ -- U54 GM094599/GM/NIGMS NIH HHS/ -- U54 GM094618/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Jul 30;523(7562):561-7. doi: 10.1038/nature14656. Epub 2015 Jul 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Structural Sciences, Center for Structural Biology and Drug Discovery, Van Andel Research Institute, Grand Rapids, Michigan 49503, USA. ; Department of Chemistry and Biochemistry, and Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-1604, USA. ; Department of Chemistry, Bridge Institute, University of Southern California, Los Angeles, California 90089, USA. ; Center for Free Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany. ; Joint Center for Structural Genomics, Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA. ; 1] Laboratory of Structural Sciences, Center for Structural Biology and Drug Discovery, Van Andel Research Institute, Grand Rapids, Michigan 49503, USA [2] Department of Obstetrics &Gynecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. ; The National Resource for Automated Molecular Microscopy, New York Structural Biology Center, New York, New York 10027, USA. ; Department of Molecular Therapeutics, The Scripps Research Institute, Scripps Florida, Jupiter, Florida 33458, USA. ; Jules Stein Eye Institute and Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA. ; Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada. ; Department of Pharmacology, Vanderbilt University, Nashville, Tennessee 37232, USA. ; Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA. ; 1] Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA [2] BioXFEL, NSF Science and Technology Center, 700 Ellicott Street, Buffalo, New York 14203, USA. ; 1] Department of Chemistry and Biochemistry, and Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-1604, USA [2] Department of Physics, Arizona State University, Tempe, Arizona 85287, USA. ; 1] Department of Chemistry and Biochemistry, and Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-1604, USA [2] Beijing Computational Science Research Center, Haidian District, Beijing 10084, China. ; 1] Department of Chemistry and Biochemistry, and Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-1604, USA [2] Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211, USA. ; State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China. ; Department of Obstetrics &Gynecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. ; Swiss Light Source at Paul Scherrer Institute, CH-5232 Villigen, Switzerland. ; Department of Biological Sciences, Bridge Institute, University of Southern California, Los Angeles, California 90089, USA. ; School of Medicine and School of Biochemistry and Immunology, Trinity College, Dublin 2, Ireland. ; 1] BioXFEL, NSF Science and Technology Center, 700 Ellicott Street, Buffalo, New York 14203, USA [2] Ben May Department for Cancer Research, University of Chicago, Chicago, Illinois 60637, USA. ; Laboratory of Biomolecular Research at Paul Scherrer Institute, CH-5232 Villigen, Switzerland. ; Department of Biology, Universitat Konstanz, 78457 Konstanz, Germany. ; Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China. ; 1] Center for Free Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany [2] Centre for Ultrafast Imaging, 22761 Hamburg, Germany. ; 1] Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada [2] Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada. ; 1] Department of Chemistry, Bridge Institute, University of Southern California, Los Angeles, California 90089, USA [2] Department of Biological Sciences, Bridge Institute, University of Southern California, Los Angeles, California 90089, USA [3] iHuman Institute, ShanghaiTech University, 2F Building 6, 99 Haike Road, Pudong New District, Shanghai 201210, China. ; 1] Laboratory of Structural Sciences, Center for Structural Biology and Drug Discovery, Van Andel Research Institute, Grand Rapids, Michigan 49503, USA [2] VARI-SIMM Center, Center for Structure and Function of Drug Targets, CAS-Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26200343" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arrestin/*chemistry/*metabolism ; Binding Sites ; Crystallography, X-Ray ; Disulfides/chemistry/metabolism ; Humans ; Lasers ; Mice ; Models, Molecular ; Multiprotein Complexes/biosynthesis/chemistry/metabolism ; Protein Binding ; Reproducibility of Results ; Rhodopsin/*chemistry/*metabolism ; Signal Transduction ; X-Rays
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  • 196
    Publication Date: 2015-04-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yutzey, Katherine E -- England -- Nature. 2015 Apr 23;520(7548):445-6. doi: 10.1038/520445a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Cardiovascular Biology, Cincinnati Children's Medical Center, Cincinnati, Ohio 45229, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25903623" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Proliferation ; Heart/growth & development ; Heart Failure/pathology/therapy ; Humans ; Mice ; Myocardial Infarction/pathology/therapy ; Myocardium/cytology/*metabolism ; Myocytes, Cardiac/cytology/metabolism ; Neuregulin-1/*metabolism ; Receptor, ErbB-2/metabolism ; *Regeneration ; Regenerative Medicine ; Signal Transduction ; Zebrafish/physiology
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  • 197
    Publication Date: 2015-05-27
    Description: Missense mutations in p53 generate aberrant proteins with abrogated tumour suppressor functions that can also acquire oncogenic gain-of-function activities that promote malignant progression, invasion, metastasis and chemoresistance. Mutant p53 (mutp53) proteins undergo massive constitutive stabilization specifically in tumours, which is the key requisite for the acquisition of gain-of-functions activities. Although currently 11 million patients worldwide live with tumours expressing highly stabilized mutp53, it is unknown whether mutp53 is a therapeutic target in vivo. Here we use a novel mutp53 mouse model expressing an inactivatable R248Q hotspot mutation (floxQ) to show that tumours depend on sustained mutp53 expression. Upon tamoxifen-induced mutp53 ablation, allotransplanted and autochthonous tumours curb their growth, thus extending animal survival by 37%, and advanced tumours undergo apoptosis and tumour regression or stagnation. The HSP90/HDAC6 chaperone machinery, which is significantly upregulated in cancer compared with normal tissues, is a major determinant of mutp53 stabilization. We show that long-term HSP90 inhibition significantly extends the survival of mutp53 Q/- (R248Q allele) and H/H (R172H allele) mice by 59% and 48%, respectively, but not their corresponding p53(-/-) littermates. This mutp53-dependent drug effect occurs in H/H mice treated with 17DMAG+SAHA and in H/H and Q/- mice treated with the potent Hsp90 inhibitor ganetespib. Notably, drug activity correlates with induction of mutp53 degradation, tumour apoptosis and prevention of T-cell lymphomagenesis. These proof-of-principle data identify mutp53 as an actionable cancer-specific drug target.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506213/" 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/PMC4506213/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alexandrova, E M -- Yallowitz, A R -- Li, D -- Xu, S -- Schulz, R -- Proia, D A -- Lozano, G -- Dobbelstein, M -- Moll, U M -- 1R01CA176647/CA/NCI NIH HHS/ -- P30 CA016672/CA/NCI NIH HHS/ -- R01 CA176647/CA/NCI NIH HHS/ -- T32 HD007505/HD/NICHD NIH HHS/ -- England -- Nature. 2015 Jul 16;523(7560):352-6. doi: 10.1038/nature14430. Epub 2015 May 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Stony Brook University, Stony Brook, New York 11794, USA. ; Institute of Molecular Oncology, University of Gottingen, 37077 Gottingen, Germany. ; Synta Pharmaceuticals Corp., Lexington, Massachusetts 02421, USA. ; Department of Cancer Genetics, University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA. ; 1] Department of Pathology, Stony Brook University, Stony Brook, New York 11794, USA [2] Institute of Molecular Oncology, University of Gottingen, 37077 Gottingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26009011" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Allografts ; Animals ; Apoptosis/drug effects ; Cell Line, Tumor ; Disease Models, Animal ; Female ; HSP90 Heat-Shock Proteins/antagonists & inhibitors/metabolism ; Histone Deacetylases/metabolism ; Humans ; Lymphoma/*drug therapy/genetics/*metabolism/pathology ; Male ; Mice ; Molecular Targeted Therapy/*methods ; Mutant Proteins/*antagonists & inhibitors/genetics/metabolism ; Neoplasm Transplantation ; *Protein Stability/drug effects ; Survival Rate ; Tamoxifen/pharmacology/therapeutic use ; Triazoles/pharmacology/therapeutic use ; Tumor Suppressor Protein p53/*antagonists & inhibitors/genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 198
    Publication Date: 2015-08-11
    Description: Mitral valve prolapse (MVP) is a common cardiac valve disease that affects nearly 1 in 40 individuals. It can manifest as mitral regurgitation and is the leading indication for mitral valve surgery. Despite a clear heritable component, the genetic aetiology leading to non-syndromic MVP has remained elusive. Four affected individuals from a large multigenerational family segregating non-syndromic MVP underwent capture sequencing of the linked interval on chromosome 11. We report a missense mutation in the DCHS1 gene, the human homologue of the Drosophila cell polarity gene dachsous (ds), that segregates with MVP in the family. Morpholino knockdown of the zebrafish homologue dachsous1b resulted in a cardiac atrioventricular canal defect that could be rescued by wild-type human DCHS1, but not by DCHS1 messenger RNA with the familial mutation. Further genetic studies identified two additional families in which a second deleterious DCHS1 mutation segregates with MVP. Both DCHS1 mutations reduce protein stability as demonstrated in zebrafish, cultured cells and, notably, in mitral valve interstitial cells (MVICs) obtained during mitral valve repair surgery of a proband. Dchs1(+/-) mice had prolapse of thickened mitral leaflets, which could be traced back to developmental errors in valve morphogenesis. DCHS1 deficiency in MVP patient MVICs, as well as in Dchs1(+/-) mouse MVICs, result in altered migration and cellular patterning, supporting these processes as aetiological underpinnings for the disease. Understanding the role of DCHS1 in mitral valve development and MVP pathogenesis holds potential for therapeutic insights for this very common disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4720389/" 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/PMC4720389/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Durst, Ronen -- Sauls, Kimberly -- Peal, David S -- deVlaming, Annemarieke -- Toomer, Katelynn -- Leyne, Maire -- Salani, Monica -- Talkowski, Michael E -- Brand, Harrison -- Perrocheau, Maelle -- Simpson, Charles -- Jett, Christopher -- Stone, Matthew R -- Charles, Florie -- Chiang, Colby -- Lynch, Stacey N -- Bouatia-Naji, Nabila -- Delling, Francesca N -- Freed, Lisa A -- Tribouilloy, Christophe -- Le Tourneau, Thierry -- LeMarec, Herve -- Fernandez-Friera, Leticia -- Solis, Jorge -- Trujillano, Daniel -- Ossowski, Stephan -- Estivill, Xavier -- Dina, Christian -- Bruneval, Patrick -- Chester, Adrian -- Schott, Jean-Jacques -- Irvine, Kenneth D -- Mao, Yaopan -- Wessels, Andy -- Motiwala, Tahirali -- Puceat, Michel -- Tsukasaki, Yoshikazu -- Menick, Donald R -- Kasiganesan, Harinath -- Nie, Xingju -- Broome, Ann-Marie -- Williams, Katherine -- Johnson, Amanda -- Markwald, Roger R -- Jeunemaitre, Xavier -- Hagege, Albert -- Levine, Robert A -- Milan, David J -- Norris, Russell A -- Slaugenhaupt, Susan A -- 1P30 GM103342/GM/NIGMS NIH HHS/ -- 8P20 GM103444-07/GM/NIGMS NIH HHS/ -- C06 RR018823/RR/NCRR NIH HHS/ -- I01 BX002327/BX/BLRD VA/ -- K24 HL67434/HL/NHLBI NIH HHS/ -- R00-MH095867/MH/NIMH NIH HHS/ -- R01 HL109004/HL/NHLBI NIH HHS/ -- R01 HL127692/HL/NHLBI NIH HHS/ -- R01-HL095696/HL/NHLBI NIH HHS/ -- R01-HL109004/HL/NHLBI NIH HHS/ -- R01-HL127692/HL/NHLBI NIH HHS/ -- R01-HL33756/HL/NHLBI NIH HHS/ -- R01HL109506/HL/NHLBI NIH HHS/ -- R01HL122906-01/HL/NHLBI NIH HHS/ -- R01HL72265/HL/NHLBI NIH HHS/ -- T32 HL007208/HL/NHLBI NIH HHS/ -- T32 HL007260/HL/NHLBI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Sep 3;525(7567):109-13. doi: 10.1038/nature14670. Epub 2015 Aug 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Human Genetic Research, Massachusetts General Hospital Research Institute and Department of Neurology, Harvard Medical School, 185 Cambridge Street, Boston, Massachusetts 02114 USA. ; Cardiology Division, Hadassah Hebrew University Medical Center, POB 12000 Jerusalem, Israel. ; Cardiovascular Developmental Biology Center, Department of Regenerative Medicine and Cell Biology, Department of Medicine, Children's Research Institute, Medical University of South Carolina, 171 Ashley Avenue, Charleston, South Carolina 29425, USA. ; Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, Massachusetts 02114, USA. ; Psychiatric and Neurodevelopmental Genetics Unit, Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts 02114, USA. ; INSERM, UMR-970, Paris Cardiovascular Research Center, 75015 Paris, France. ; Universite Paris Descartes, Sorbonne Paris Cite, Faculty of Medicine, 75006 Paris, France. ; Department of Medicine (Cardiovascular Division), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA. ; Yale-New Haven Hospital Heart and Vascular Center, Yale School of Medicine, 20 York Street, New Haven, Connecticut 06510, USA. ; Department of Cardiology, University Hospital Amiens; INSERM U-1088, Jules Verne University of Picardie, 80000 Amiens, France. ; Inserm U1087; Institut du Thorax; University Hospital, 44007 Nantes, France. ; Centro Nacional de Investigaciones Cardiovasculares, Carlos III (CNIC), 28029 Madrid, Spain. ; Hospital Universitario Monteprincipe, 28660 Madrid, Spain. ; Genetic Causes of Disease Group, Centre for Genomic Regulation (CRG), 08003 Barcelona, Catalonia, Spain. ; Universitat Pompeu Fabra (UPF), 08002 Barcelona, Catalonia, Spain. ; Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Catalonia, Spain. ; CIBER in Epidemiology and Public Health (CIBERESP), 08036 Barcelona, Catalonia, Spain. ; Genomic and Epigenomic Variation in Disease Group, Centre for Genomic Regulation (CRG), 08003 Barcelona, Catalonia, Spain. ; CNRS, UMR 6291, 44007 Nantes, France. ; Universite de Nantes, 44322 Nantes, France. ; CHU Nantes, l'Institut du Thorax, Service de Cardiologie, 44093 Nantes, France. ; Service d'Anatomie Pathologique, Hopital Europeen Georges Pompidou, 75015 Paris, France. ; National Heart and Lung Institute, Harefield, Heart Science Centre, Imperial College London, London SW7 2AZ, UK. ; Howard Hughes Medical Institute, Waksman Institute and Department of Molecular Biology and Biochemistry, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, USA. ; INSERM UMR_S910, Team physiopathology of cardiac development Aix-Marseille University, Medical School La Timone, 13885 Marseille, France. ; Department of Cellular and Molecular Biology, University of Texas Health Science Center Northeast Tyler, Texas75708, USA. ; Gazes Cardiac Research Institute, Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina 29425, USA. ; Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, South Carolina 29425, USA. ; Assistance Publique - Hopitaux de Paris, Departement de Genetique, Hopital Europeen Georges Pompidou, 75015 Paris, France. ; Assistance Publique - Hopitaux de Paris, Departement de Cardiologie, Hopital Europeen Georges Pompidou, 75015 Paris, France. ; Cardiac Ultrasound Laboratory, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, Massachusetts 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26258302" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Patterning/genetics ; Cadherins/deficiency/*genetics/*metabolism ; Cell Movement/genetics ; Chromosomes, Human, Pair 11/genetics ; Female ; Humans ; Male ; Mice ; Mitral Valve/abnormalities/embryology/pathology/surgery ; Mitral Valve Prolapse/*genetics/*pathology ; Mutation/*genetics ; Pedigree ; Phenotype ; Protein Stability ; RNA, Messenger/genetics ; Zebrafish/genetics ; Zebrafish Proteins/genetics/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 199
    Publication Date: 2015-02-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Skipper, Magdalena -- Eccleston, Alex -- Gray, Noah -- Heemels, Therese -- Le Bot, Nathalie -- Marte, Barbara -- Weiss, Ursula -- England -- Nature. 2015 Feb 19;518(7539):313. doi: 10.1038/518313a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25693561" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/genetics ; Animals ; Autoimmune Diseases/genetics ; Cell Differentiation/genetics ; Chromatin Assembly and Disassembly/genetics ; DNA Methylation/genetics ; Epigenesis, Genetic/*genetics ; *Epigenomics ; Genome, Human/genetics ; Haplotypes/genetics ; Histones/metabolism ; Humans ; Mice ; Neoplasms/genetics ; Stem Cells/cytology/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 200
    Publication Date: 2016-01-08
    Description: It has been known for more than 70 years that synaptic strength is dynamically regulated in a use-dependent manner. At synapses with a low initial release probability, closely spaced presynaptic action potentials can result in facilitation, a short-term form of enhancement in which each subsequent action potential evokes greater neurotransmitter release. Facilitation can enhance neurotransmitter release considerably and can profoundly influence information transfer across synapses, but the underlying mechanism remains a mystery. One proposed mechanism is that a specialized calcium sensor for facilitation transiently increases the probability of release, and this sensor is distinct from the fast sensors that mediate rapid neurotransmitter release. Yet such a sensor has never been identified, and its very existence has been disputed. Here we show that synaptotagmin 7 (Syt7) is a calcium sensor that is required for facilitation at several central synapses. In Syt7-knockout mice, facilitation is eliminated even though the initial probability of release and the presynaptic residual calcium signals are unaltered. Expression of wild-type Syt7 in presynaptic neurons restored facilitation, whereas expression of a mutated Syt7 with a calcium-insensitive C2A domain did not. By revealing the role of Syt7 in synaptic facilitation, these results resolve a longstanding debate about a widespread form of short-term plasticity, and will enable future studies that may lead to a deeper understanding of the functional importance of facilitation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4729191/" 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/PMC4729191/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jackman, Skyler L -- Turecek, Josef -- Belinsky, Justine E -- Regehr, Wade G -- NS032405/NS/NINDS NIH HHS/ -- P30 NS072030/NS/NINDS NIH HHS/ -- R01 NS032405/NS/NINDS NIH HHS/ -- England -- Nature. 2016 Jan 7;529(7584):88-91. doi: 10.1038/nature16507.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26738595" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/*metabolism ; Calcium Signaling ; Female ; Male ; Mice ; Mice, Knockout ; Neuronal Plasticity ; Neurons/metabolism/secretion ; Neurotransmitter Agents/*secretion ; Presynaptic Terminals/metabolism ; Synapses/*metabolism/secretion ; *Synaptic Transmission ; Synaptotagmins/deficiency/genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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