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  • Articles  (429)
  • Latest Papers from Table of Contents or Articles in Press  (429)
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  • Latest Papers from Table of Contents or Articles in Press  (429)
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  • 1
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    Endophilin marks and controls a clathrin-independent endocytic pathway (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-12-18
    Description: Endocytosis is required for internalization of micronutrients and turnover of membrane components. Endophilin has been assigned as a component of clathrin-mediated endocytosis. Here we show in mammalian cells that endophilin marks and controls a fast-acting tubulovesicular endocytic pathway that is independent of AP2 and clathrin, activated upon ligand binding to cargo receptors, inhibited by inhibitors of dynamin, Rac, phosphatidylinositol-3-OH kinase, PAK1 and actin polymerization, and activated upon Cdc42 inhibition. This pathway is prominent at the leading edges of cells where phosphatidylinositol-3,4-bisphosphate-produced by the dephosphorylation of phosphatidylinositol-3,4,5-triphosphate by SHIP1 and SHIP2-recruits lamellipodin, which in turn engages endophilin. This pathway mediates the ligand-triggered uptake of several G-protein-coupled receptors such as alpha2a- and beta1-adrenergic, dopaminergic D3 and D4 receptors and muscarinic acetylcholine receptor 4, the receptor tyrosine kinases EGFR, HGFR, VEGFR, PDGFR, NGFR and IGF1R, as well as interleukin-2 receptor. We call this new endocytic route fast endophilin-mediated endocytosis (FEME).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boucrot, Emmanuel -- Ferreira, Antonio P A -- Almeida-Souza, Leonardo -- Debard, Sylvain -- Vallis, Yvonne -- Howard, Gillian -- Bertot, Laetitia -- Sauvonnet, Nathalie -- McMahon, Harvey T -- U105178805/Medical Research Council/United Kingdom -- Biotechnology and Biological Sciences Research Council/United Kingdom -- England -- Nature. 2015 Jan 22;517(7535):460-5. doi: 10.1038/nature14067. Epub 2014 Dec 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK [2] Institute of Structural and Molecular Biology, University College London &Birkbeck College, London WC1E 6BT, UK. ; Institute of Structural and Molecular Biology, University College London &Birkbeck College, London WC1E 6BT, UK. ; MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK. ; 1] Institute of Structural and Molecular Biology, University College London &Birkbeck College, London WC1E 6BT, UK [2] Department of Biology, Ecole Normale Superieure de Cachan, 94235 Cachan, France. ; Institut Pasteur, Unite de Pathogenie Moleculaire Microbienne, 28 rue du Docteur Roux, 75724 Paris Cedex 15, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25517094" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Acyltransferases/*metabolism ; Cell Line ; Clathrin ; Dynamins/metabolism ; *Endocytosis ; Humans ; Ligands ; Phosphatidylinositol Phosphates/metabolism ; Pseudopodia/metabolism ; Receptor Protein-Tyrosine Kinases/metabolism ; Receptors, G-Protein-Coupled/metabolism ; Receptors, Interleukin-2/metabolism ; Signal Transduction ; Time Factors
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
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    Endophilin-A2 functions in membrane scission in clathrin-independent endocytosis (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-12-18
    Description: During endocytosis, energy is invested to narrow the necks of cargo-containing plasma membrane invaginations to radii at which the opposing segments spontaneously coalesce, thereby leading to the detachment by scission of endocytic uptake carriers. In the clathrin pathway, dynamin uses mechanical energy from GTP hydrolysis to this effect, assisted by the BIN/amphiphysin/Rvs (BAR) domain-containing protein endophilin. Clathrin-independent endocytic events are often less reliant on dynamin, and whether in these cases BAR domain proteins such as endophilin contribute to scission has remained unexplored. Here we show, in human and other mammalian cell lines, that endophilin-A2 (endoA2) specifically and functionally associates with very early uptake structures that are induced by the bacterial Shiga and cholera toxins, which are both clathrin-independent endocytic cargoes. In controlled in vitro systems, endoA2 reshapes membranes before scission. Furthermore, we demonstrate that endoA2, dynamin and actin contribute in parallel to the scission of Shiga-toxin-induced tubules. Our results establish a novel function of endoA2 in clathrin-independent endocytosis. They document that distinct scission factors operate in an additive manner, and predict that specificity within a given uptake process arises from defined combinations of universal modules. Our findings highlight a previously unnoticed link between membrane scaffolding by endoA2 and pulling-force-driven dynamic scission.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4342003/" 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/PMC4342003/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Renard, Henri-Francois -- Simunovic, Mijo -- Lemiere, Joel -- Boucrot, Emmanuel -- Garcia-Castillo, Maria Daniela -- Arumugam, Senthil -- Chambon, Valerie -- Lamaze, Christophe -- Wunder, Christian -- Kenworthy, Anne K -- Schmidt, Anne A -- McMahon, Harvey T -- Sykes, Cecile -- Bassereau, Patricia -- Johannes, Ludger -- R01 GM106720/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Jan 22;517(7535):493-6. doi: 10.1038/nature14064. Epub 2014 Dec 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Institut Curie - Centre de Recherche, Endocytic Trafficking and Therapeutic Delivery group, 26 rue d'Ulm, 75248 Paris Cedex 05, France [2] CNRS UMR3666, 75005 Paris, France [3] U1143 INSERM, 75005 Paris, France. ; 1] Institut Curie - Centre de Recherche, Membrane and Cell Functions group, CNRS UMR 168, Physico-Chimie Curie, Universite Pierre et Marie Curie, 26 rue d'Ulm, 75248 Paris Cedex 05, France [2] The University of Chicago, Department of Chemistry, 5735 S Ellis Ave, Chicago, Ilinois 60637, USA. ; 1] Institut Curie - Centre de Recherche, Biomimetism of Cell Movement group, CNRS UMR 168, Physico-Chimie Curie, Universite Pierre et Marie Curie, 26 rue d'Ulm, 75248 Paris Cedex 05, France [2] Universite Paris Diderot, Sorbonne Paris Cite, 75205 Paris, France. ; Institute of Structural and Molecular Biology, University College London &Birkbeck College, London WC1E 6BT, UK. ; 1] CNRS UMR3666, 75005 Paris, France [2] U1143 INSERM, 75005 Paris, France [3] Institut Curie - Centre de Recherche, Membrane Dynamics and Mechanics of Intracellular Signaling group, 26 rue d'Ulm, 75248 Paris Cedex 05, France. ; Vanderbilt School of Medicine, Department of Molecular Physiology and Biophysics, 718 Light Hall, Nashville, Tennessee 37232, USA. ; CNRS, UMR7592, Institut Jacques Monod, Universite Paris Diderot, Sorbonne Paris Cite, 15 rue Helene Brion, 75205 Paris Cedex 13, France. ; Medical Research Council, Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge CB2 0QH, UK. ; Institut Curie - Centre de Recherche, Biomimetism of Cell Movement group, CNRS UMR 168, Physico-Chimie Curie, Universite Pierre et Marie Curie, 26 rue d'Ulm, 75248 Paris Cedex 05, France. ; Institut Curie - Centre de Recherche, Membrane and Cell Functions group, CNRS UMR 168, Physico-Chimie Curie, Universite Pierre et Marie Curie, 26 rue d'Ulm, 75248 Paris Cedex 05, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25517096" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Acyltransferases/*metabolism ; Animals ; Cell Line ; Cell Membrane/*metabolism ; Cholera Toxin/metabolism ; Clathrin ; Dynamins/metabolism ; *Endocytosis ; Humans ; Rats ; Shiga Toxin/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
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    Enhancer-core-promoter specificity separates developmental and housekeeping gene regulation (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-12-18
    Description: Gene transcription in animals involves the assembly of RNA polymerase II at core promoters and its cell-type-specific activation by enhancers that can be located more distally. However, how ubiquitous expression of housekeeping genes is achieved has been less clear. In particular, it is unknown whether ubiquitously active enhancers exist and how developmental and housekeeping gene regulation is separated. An attractive hypothesis is that different core promoters might exhibit an intrinsic specificity to certain enhancers. This is conceivable, as various core promoter sequence elements are differentially distributed between genes of different functions, including elements that are predominantly found at either developmentally regulated or at housekeeping genes. Here we show that thousands of enhancers in Drosophila melanogaster S2 and ovarian somatic cells (OSCs) exhibit a marked specificity to one of two core promoters--one derived from a ubiquitously expressed ribosomal protein gene and another from a developmentally regulated transcription factor--and confirm the existence of these two classes for five additional core promoters from genes with diverse functions. Housekeeping enhancers are active across the two cell types, while developmental enhancers exhibit strong cell-type specificity. Both enhancer classes differ in their genomic distribution, the functions of neighbouring genes, and the core promoter elements of these neighbouring genes. In addition, we identify two transcription factors--Dref and Trl--that bind and activate housekeeping versus developmental enhancers, respectively. Our results provide evidence for a sequence-encoded enhancer-core-promoter specificity that separates developmental and housekeeping gene regulatory programs for thousands of enhancers and their target genes across the entire genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zabidi, Muhammad A -- Arnold, Cosmas D -- Schernhuber, Katharina -- Pagani, Michaela -- Rath, Martina -- Frank, Olga -- Stark, Alexander -- England -- Nature. 2015 Feb 26;518(7540):556-9. doi: 10.1038/nature13994. Epub 2014 Dec 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Institute of Molecular Pathology IMP, Vienna Biocenter VBC, Dr Bohr-Gasse 7, 1030 Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25517091" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; DNA-Binding Proteins/metabolism ; Drosophila Proteins/metabolism ; Drosophila melanogaster/*embryology/*genetics ; Enhancer Elements, Genetic/*genetics ; Gene Expression Regulation, Developmental/*genetics ; Genes, Essential/*genetics ; Genome, Insect/genetics ; Models, Genetic ; Organ Specificity ; Promoter Regions, Genetic/*genetics ; Substrate Specificity/genetics ; Transcription Factors/metabolism ; Transcriptional Activation/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
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    Systems biology. Accurate information transmission through dynamic biochemical signaling networks (2014)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2014-12-17
    Description: Stochasticity inherent to biochemical reactions (intrinsic noise) and variability in cellular states (extrinsic noise) degrade information transmitted through signaling networks. We analyzed the ability of temporal signal modulation--that is, dynamics--to reduce noise-induced information loss. In the extracellular signal-regulated kinase (ERK), calcium (Ca(2+)), and nuclear factor kappa-B (NF-kappaB) pathways, response dynamics resulted in significantly greater information transmission capacities compared to nondynamic responses. Theoretical analysis demonstrated that signaling dynamics has a key role in overcoming extrinsic noise. Experimental measurements of information transmission in the ERK network under varying signal-to-noise levels confirmed our predictions and showed that signaling dynamics mitigate, and can potentially eliminate, extrinsic noise-induced information loss. By curbing the information-degrading effects of cell-to-cell variability, dynamic responses substantially increase the accuracy of biochemical signaling networks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Selimkhanov, Jangir -- Taylor, Brooks -- Yao, Jason -- Pilko, Anna -- Albeck, John -- Hoffmann, Alexander -- Tsimring, Lev -- Wollman, Roy -- P50 GM085764/GM/NIGMS NIH HHS/ -- P50-GM085764/GM/NIGMS NIH HHS/ -- R01 GM089976/GM/NIGMS NIH HHS/ -- R01-GM071573/GM/NIGMS NIH HHS/ -- R01-GM089976/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2014 Dec 12;346(6215):1370-3. doi: 10.1126/science.1254933.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bioengineering, University of California-San Diego, La Jolla, CA 92093, USA. ; Department of Chemistry and Biochemistry, University of California-San Diego, La Jolla, CA 92093, USA. ; Department of Molecular and Cellular Biology, University of California-Davis, Davis 95616, USA. ; San Diego Center for Systems Biology, La Jolla, CA 92093, USA. Institute for Quantitative and Computational Biosciences and Department of Microbiology, Immunology, and Molecular Genetics, University of California-Los Angeles, Los Angeles, CA 90025, USA. ; San Diego Center for Systems Biology, La Jolla, CA 92093, USA. BioCircuits Institute, University of California-San Diego, La Jolla, CA 92093, USA. ; Department of Chemistry and Biochemistry, University of California-San Diego, La Jolla, CA 92093, USA. San Diego Center for Systems Biology, La Jolla, CA 92093, USA. Cell and Developmental Biology Section, Division of Biological Sciences, University of California-San Diego, La Jolla, CA 92093, USA. rwollman@ucsd.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25504722" target="_blank"〉PubMed〈/a〉
    Keywords: *Calcium Signaling ; Cell Line ; Computer Simulation ; Extracellular Signal-Regulated MAP Kinases/*metabolism ; Humans ; *MAP Kinase Signaling System ; NF-kappa B/*metabolism ; *Signal Transduction ; Signal-To-Noise Ratio ; Single-Cell Analysis ; Systems Biology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Intracellular alpha-ketoglutarate maintains the pluripotency of embryonic stem cells (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-12-10
    Description: The role of cellular metabolism in regulating cell proliferation and differentiation remains poorly understood. For example, most mammalian cells cannot proliferate without exogenous glutamine supplementation even though glutamine is a non-essential amino acid. Here we show that mouse embryonic stem (ES) cells grown under conditions that maintain naive pluripotency are capable of proliferation in the absence of exogenous glutamine. Despite this, ES cells consume high levels of exogenous glutamine when the metabolite is available. In comparison to more differentiated cells, naive ES cells utilize both glucose and glutamine catabolism to maintain a high level of intracellular alpha-ketoglutarate (alphaKG). Consequently, naive ES cells exhibit an elevated alphaKG to succinate ratio that promotes histone/DNA demethylation and maintains pluripotency. Direct manipulation of the intracellular alphaKG/succinate ratio is sufficient to regulate multiple chromatin modifications, including H3K27me3 and ten-eleven translocation (Tet)-dependent DNA demethylation, which contribute to the regulation of pluripotency-associated gene expression. In vitro, supplementation with cell-permeable alphaKG directly supports ES-cell self-renewal while cell-permeable succinate promotes differentiation. This work reveals that intracellular alphaKG/succinate levels can contribute to the maintenance of cellular identity and have a mechanistic role in the transcriptional and epigenetic state of stem cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4336218/" 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/PMC4336218/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carey, Bryce W -- Finley, Lydia W S -- Cross, Justin R -- Allis, C David -- Thompson, Craig B -- P30 CA008748/CA/NCI NIH HHS/ -- R01 CA105463/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Feb 19;518(7539):413-6. doi: 10.1038/nature13981. Epub 2014 Dec 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Chromatin Biology and Epigenetics, The Rockefeller University, New York, New York 10065, USA. ; Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA. ; Donald B. and Catherine C. Marron Cancer Metabolism Center, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25487152" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation/drug effects ; Cell Line ; Cell Membrane Permeability ; Cell Proliferation ; Chromatin/drug effects ; DNA Methylation/drug effects ; Embryonic Stem Cells/*cytology/drug effects/metabolism ; Epigenesis, Genetic/drug effects/genetics ; Glucose/metabolism ; Glutamic Acid/metabolism ; Histones/metabolism ; Intracellular Space/*metabolism ; Ketoglutaric Acids/*metabolism/pharmacology ; Methylation ; Mice ; Pluripotent Stem Cells/*cytology/drug effects/metabolism ; Succinic Acid/metabolism/pharmacology ; Transcription, Genetic/drug effects
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  • 6
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    Chromatin decondensation is sufficient to alter nuclear organization in embryonic stem cells (2014)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2014-12-06
    Description: During differentiation, thousands of genes are repositioned toward or away from the nuclear envelope. These movements correlate with changes in transcription and replication timing. Using synthetic (TALE) transcription factors, we found that transcriptional activation of endogenous genes by a viral trans-activator is sufficient to induce gene repositioning toward the nuclear interior in embryonic stem cells. However, gene relocation was also induced by recruitment of an acidic peptide that decondenses chromatin without affecting transcription, indicating that nuclear reorganization is driven by chromatin remodeling rather than transcription. We identified an epigenetic inheritance of chromatin decondensation that maintained central nuclear positioning through mitosis even after the TALE transcription factor was lost. Our results also demonstrate that transcriptional activation, but not chromatin decondensation, is sufficient to change replication timing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Therizols, Pierre -- Illingworth, Robert S -- Courilleau, Celine -- Boyle, Shelagh -- Wood, Andrew J -- Bickmore, Wendy A -- 102560/Wellcome Trust/United Kingdom -- MC_PC_U127527202/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2014 Dec 5;346(6214):1238-42. doi: 10.1126/science.1259587.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Crewe Road, Edinburgh EH4 2XU, UK. ; MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Crewe Road, Edinburgh EH4 2XU, UK. wendy.bickmore@igmm.ed.ac.uk.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25477464" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation/*genetics ; Cell Line ; Cell Nucleus/*genetics/metabolism/ultrastructure ; Chromatin/*metabolism ; *Chromatin Assembly and Disassembly ; DNA Replication ; Embryonic Stem Cells/*cytology/metabolism ; *Epigenesis, Genetic ; Mice ; Nuclear Envelope/genetics/metabolism/ultrastructure ; Trans-Activators/*metabolism ; *Transcriptional Activation
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Principles of regulatory information conservation between mouse and human (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-11-21
    Description: To broaden our understanding of the evolution of gene regulation mechanisms, we generated occupancy profiles for 34 orthologous transcription factors (TFs) in human-mouse erythroid progenitor, lymphoblast and embryonic stem-cell lines. By combining the genome-wide transcription factor occupancy repertoires, associated epigenetic signals, and co-association patterns, here we deduce several evolutionary principles of gene regulatory features operating since the mouse and human lineages diverged. The genomic distribution profiles, primary binding motifs, chromatin states, and DNA methylation preferences are well conserved for TF-occupied sequences. However, the extent to which orthologous DNA segments are bound by orthologous TFs varies both among TFs and with genomic location: binding at promoters is more highly conserved than binding at distal elements. Notably, occupancy-conserved TF-occupied sequences tend to be pleiotropic; they function in several tissues and also co-associate with many TFs. Single nucleotide variants at sites with potential regulatory functions are enriched in occupancy-conserved TF-occupied sequences.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4343047/" 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/PMC4343047/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cheng, Yong -- Ma, Zhihai -- Kim, Bong-Hyun -- Wu, Weisheng -- Cayting, Philip -- Boyle, Alan P -- Sundaram, Vasavi -- Xing, Xiaoyun -- Dogan, Nergiz -- Li, Jingjing -- Euskirchen, Ghia -- Lin, Shin -- Lin, Yiing -- Visel, Axel -- Kawli, Trupti -- Yang, Xinqiong -- Patacsil, Dorrelyn -- Keller, Cheryl A -- Giardine, Belinda -- Mouse ENCODE Consortium -- Kundaje, Anshul -- Wang, Ting -- Pennacchio, Len A -- Weng, Zhiping -- Hardison, Ross C -- Snyder, Michael P -- 1U54HG00699/HG/NHGRI NIH HHS/ -- 3RC2HG005602/HG/NHGRI NIH HHS/ -- 5U54HG006996/HG/NHGRI NIH HHS/ -- R01 DK065806/DK/NIDDK NIH HHS/ -- R01 DK096266/DK/NIDDK NIH HHS/ -- R01 ES024992/ES/NIEHS NIH HHS/ -- R01 EY021482/EY/NEI NIH HHS/ -- R01 GM083337/GM/NIGMS NIH HHS/ -- R01 HG003988/HG/NHGRI NIH HHS/ -- R01 HG004037/HG/NHGRI NIH HHS/ -- R01 HG007175/HG/NHGRI NIH HHS/ -- R01 HG007348/HG/NHGRI NIH HHS/ -- R01 HG007354/HG/NHGRI NIH HHS/ -- R01DK065806/DK/NIDDK NIH HHS/ -- R01HG003988/HG/NHGRI NIH HHS/ -- R37 DK044746/DK/NIDDK NIH HHS/ -- RC2 HG005573/HG/NHGRI NIH HHS/ -- RC2 HG005602/HG/NHGRI NIH HHS/ -- RC2HG005573/HG/NHGRI NIH HHS/ -- U01 DE024427/DE/NIDCR NIH HHS/ -- U41 HG007234/HG/NHGRI NIH HHS/ -- U54 HG006996/HG/NHGRI NIH HHS/ -- U54 HG006997/HG/NHGRI NIH HHS/ -- U54 HG006998/HG/NHGRI NIH HHS/ -- U54 HG007004/HG/NHGRI NIH HHS/ -- U54HG006997/HG/NHGRI NIH HHS/ -- England -- Nature. 2014 Nov 20;515(7527):371-5. doi: 10.1038/nature13985.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Stanford University, Stanford, California 94305, USA. ; Program in Bioinformatics and Integrative Biology, Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA. ; 1] Center for Comparative Genomics and Bioinformatics, Huck Institutes of the Life Sciences, Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA [2] BRCF Bioinformatics Core, University of Michigan, Ann Arbor, Michigan 48105, USA. ; Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St Louis, Missouri 63108, USA. ; Center for Comparative Genomics and Bioinformatics, Huck Institutes of the Life Sciences, Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA. ; 1] Department of Genetics, Stanford University, Stanford, California 94305, USA [2] Division of Cardiovascular Medicine, Stanford University, Stanford, California 94304, USA. ; 1] Department of Genetics, Stanford University, Stanford, California 94305, USA [2] Department of Surgery, Washington University School of Medicine, St Louis, Missouri 63110, USA. ; 1] Lawrence Berkeley National Laboratory, Genomics Division, Berkeley, California 94701, USA [2] Department of Energy Joint Genome Institute, Walnut Creek, California 94598, USA [3] School of Natural Sciences, University of California, Merced, California 95343, USA. ; 1] Lawrence Berkeley National Laboratory, Genomics Division, Berkeley, California 94701, USA [2] Department of Energy Joint Genome Institute, Walnut Creek, California 94598, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25409826" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Chromatin/genetics/metabolism ; Conserved Sequence/*genetics ; Enhancer Elements, Genetic/genetics ; Genome/*genetics ; *Genomics ; Humans ; Mice ; Polymorphism, Single Nucleotide/genetics ; Regulatory Sequences, Nucleic Acid/*genetics ; Transcription Factors/*metabolism
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  • 8
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    RNA regulons in Hox 5' UTRs confer ribosome specificity to gene regulation (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-11-20
    Description: Emerging evidence suggests that the ribosome has a regulatory function in directing how the genome is translated in time and space. However, how this regulation is encoded in the messenger RNA sequence remains largely unknown. Here we uncover unique RNA regulons embedded in homeobox (Hox) 5' untranslated regions (UTRs) that confer ribosome-mediated control of gene expression. These structured RNA elements, resembling viral internal ribosome entry sites (IRESs), are found in subsets of Hox mRNAs. They facilitate ribosome recruitment and require the ribosomal protein RPL38 for their activity. Despite numerous layers of Hox gene regulation, these IRES elements are essential for converting Hox transcripts into proteins to pattern the mammalian body plan. This specialized mode of IRES-dependent translation is enabled by an additional regulatory element that we term the translation inhibitory element (TIE), which blocks cap-dependent translation of transcripts. Together, these data uncover a new paradigm for ribosome-mediated control of gene expression and organismal development.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4353651/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4353651/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xue, Shifeng -- Tian, Siqi -- Fujii, Kotaro -- Kladwang, Wipapat -- Das, Rhiju -- Barna, Maria -- 7DP2OD00850902/OD/NIH HHS/ -- DP2 OD008509/OD/NIH HHS/ -- R01 GM102519/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Jan 1;517(7532):33-8. doi: 10.1038/nature14010. Epub 2014 Nov 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Developmental Biology, Stanford University, Stanford, California 94305, USA [2] Department of Genetics, Stanford University, Stanford, California 94305, USA [3] Tetrad Graduate Program, University of California, San Francisco, San Francisco, California 94158, USA. ; Department of Biochemistry, Stanford University, Stanford, California 94305, USA. ; 1] Department of Developmental Biology, Stanford University, Stanford, California 94305, USA [2] Department of Genetics, Stanford University, Stanford, California 94305, USA. ; 1] Department of Biochemistry, Stanford University, Stanford, California 94305, USA [2] Department of Physics, Stanford University, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25409156" target="_blank"〉PubMed〈/a〉
    Keywords: 5' Untranslated Regions/*genetics ; Animals ; Bone and Bones/embryology/metabolism ; Cell Line ; Conserved Sequence ; Evolution, Molecular ; Gene Expression Regulation/*genetics ; Genes, Homeobox/*genetics ; Mice ; Molecular Sequence Data ; Protein Biosynthesis/genetics ; RNA Caps/metabolism ; Regulatory Sequences, Ribonucleic Acid/*genetics ; Ribosomal Proteins/metabolism ; Ribosomes/chemistry/*metabolism ; Substrate Specificity ; Zebrafish/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 9
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    Nutrient-sensing nuclear receptors coordinate autophagy (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-11-11
    Description: Autophagy is an evolutionarily conserved catabolic process that recycles nutrients upon starvation and maintains cellular energy homeostasis. Its acute regulation by nutrient-sensing signalling pathways is well described, but its longer-term transcriptional regulation is not. The nuclear receptors peroxisome proliferator-activated receptor-alpha (PPARalpha) and farnesoid X receptor (FXR) are activated in the fasted and fed liver, respectively. Here we show that both PPARalpha and FXR regulate hepatic autophagy in mice. Pharmacological activation of PPARalpha reverses the normal suppression of autophagy in the fed state, inducing autophagic lipid degradation, or lipophagy. This response is lost in PPARalpha knockout (Ppara(-/-), also known as Nr1c1(-/-)) mice, which are partially defective in the induction of autophagy by fasting. Pharmacological activation of the bile acid receptor FXR strongly suppresses the induction of autophagy in the fasting state, and this response is absent in FXR knockout (Fxr(-/-), also known as Nr1h4(-/-)) mice, which show a partial defect in suppression of hepatic autophagy in the fed state. PPARalpha and FXR compete for binding to shared sites in autophagic gene promoters, with opposite transcriptional outputs. These results reveal complementary, interlocking mechanisms for regulation of autophagy by nutrient status.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4267857/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4267857/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Jae Man -- Wagner, Martin -- Xiao, Rui -- Kim, Kang Ho -- Feng, Dan -- Lazar, Mitchell A -- Moore, David D -- DK43806/DK/NIDDK NIH HHS/ -- P30 DK019525/DK/NIDDK NIH HHS/ -- P30DX56338-05A2/PHS HHS/ -- P39CA125123-04/CA/NCI NIH HHS/ -- R01 DK049780/DK/NIDDK NIH HHS/ -- R01 DK49780/DK/NIDDK NIH HHS/ -- R37 DK043806/DK/NIDDK NIH HHS/ -- S10RR027783-01A1/RR/NCRR NIH HHS/ -- U54HD-07495-39/HD/NICHD NIH HHS/ -- England -- Nature. 2014 Dec 4;516(7529):112-5. doi: 10.1038/nature13961. Epub 2014 Nov 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA. ; Division of Endocrinology, Diabetes, and Metabolism and the Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19014, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25383539" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autophagy/genetics/*physiology ; Cell Line ; Cells, Cultured ; Fasting/physiology ; Gene Expression Regulation ; Hepatocytes/metabolism ; Liver/cytology/*metabolism/ultrastructure ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Microtubule-Associated Proteins/genetics/metabolism ; PPAR alpha ; Receptors, Cytoplasmic and Nuclear/genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 10
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    Enteric bacteria promote human and mouse norovirus infection of B cells (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-11-08
    Description: The cell tropism of human noroviruses and the development of an in vitro infection model remain elusive. Although susceptibility to individual human norovirus strains correlates with an individual's histo-blood group antigen (HBGA) profile, the biological basis of this restriction is unknown. We demonstrate that human and mouse noroviruses infected B cells in vitro and likely in vivo. Human norovirus infection of B cells required the presence of HBGA-expressing enteric bacteria. Furthermore, mouse norovirus replication was reduced in vivo when the intestinal microbiota was depleted by means of oral antibiotic administration. Thus, we have identified B cells as a cellular target of noroviruses and enteric bacteria as a stimulatory factor for norovirus infection, leading to the development of an in vitro infection model for human noroviruses.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4401463/" 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/PMC4401463/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, Melissa K -- Watanabe, Makiko -- Zhu, Shu -- Graves, Christina L -- Keyes, Lisa R -- Grau, Katrina R -- Gonzalez-Hernandez, Mariam B -- Iovine, Nicole M -- Wobus, Christiane E -- Vinje, Jan -- Tibbetts, Scott A -- Wallet, Shannon M -- Karst, Stephanie M -- R01 AI080611/AI/NIAID NIH HHS/ -- R21 AI103961/AI/NIAID NIH HHS/ -- T90 DE021990/DE/NIDCR NIH HHS/ -- T90 DE021990-02/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 2014 Nov 7;346(6210):755-9. doi: 10.1126/science.1257147.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Microbiology, Emerging Pathogens Institute, College of Medicine, University of Florida, Gainesville, FL, USA. ; Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, FL, USA. Department of Periodontology, College of Dentistry, University of Florida, Gainesville, FL, USA. ; Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA. ; Department of Medicine, Division of Infectious Diseases, University of Florida, Gainesville, FL, USA. ; Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA. ; Department of Molecular Genetics and Microbiology, Emerging Pathogens Institute, College of Medicine, University of Florida, Gainesville, FL, USA. skarst@ufl.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25378626" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/pharmacology ; B-Lymphocytes/immunology/*virology ; Caliciviridae Infections/*immunology/microbiology/virology ; Cell Line ; Enterobacteriaceae/drug effects/*physiology ; Gastroenteritis/*immunology/microbiology/virology ; Genome, Viral/genetics/physiology ; Homeodomain Proteins/genetics ; Humans ; Intestines/immunology/*microbiology ; Mice ; Mice, Mutant Strains ; Norovirus/*physiology ; Peyer's Patches/immunology/virology ; *Virus Replication
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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