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  • 1
    Publikationsdatum: 2009-11-27
    Beschreibung: Protein design provides a rigorous test of our knowledge about proteins and allows the creation of novel enzymes for biotechnological applications. Whereas progress has been made in designing proteins that mimic native proteins structurally, it is more difficult to design functional proteins. In comparison to recent successes in designing non-metalloproteins, it is even more challenging to rationally design metalloproteins that reproduce both the structure and function of native metalloenzymes. This is because protein metal-binding sites are much more varied than non-metal-containing sites, in terms of different metal ion oxidation states, preferred geometry and metal ion ligand donor sets. Because of their variability, it has been difficult to predict metal-binding site properties in silico, as many of the parameters, such as force fields, are ill-defined. Therefore, the successful design of a structural and functional metalloprotein would greatly advance the field of protein design and our understanding of enzymes. Here we report a successful, rational design of a structural and functional model of a metalloprotein, nitric oxide reductase (NOR), by introducing three histidines and one glutamate, predicted as ligands in the active site of NOR, into the distal pocket of myoglobin. A crystal structure of the designed protein confirms that the minimized computer model contains a haem/non-haem Fe(B) centre that is remarkably similar to that in the crystal structure. This designed protein also exhibits NO reduction activity, and so models both the structure and function of NOR, offering insight that the active site glutamate is required for both iron binding and activity. These results show that structural and functional metalloproteins can be rationally designed in silico.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4297211/" 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/PMC4297211/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yeung, Natasha -- Lin, Ying-Wu -- Gao, Yi-Gui -- Zhao, Xuan -- Russell, Brandy S -- Lei, Lanyu -- Miner, Kyle D -- Robinson, Howard -- Lu, Yi -- GM062211/GM/NIGMS NIH HHS/ -- R01 GM062211/GM/NIGMS NIH HHS/ -- England -- Nature. 2009 Dec 24;462(7276):1079-82. doi: 10.1038/nature08620. Epub 2009 Nov 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19940850" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Crystallization ; Iron/metabolism ; Models, Molecular ; Myoglobin/chemistry ; Nitric Oxide/metabolism ; Oxidoreductases/*chemical synthesis/*chemistry/metabolism ; Protein Binding ; Protein Structure, Tertiary
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2009-08-04
    Beschreibung: Polymerization of actin filaments directed by the actin-related protein (Arp)2/3 complex supports many types of cellular movements. However, questions remain regarding the relative contributions of Arp2/3 complex versus other mechanisms of actin filament nucleation to processes such as path finding by neuronal growth cones; this is because of the lack of simple methods to inhibit Arp2/3 complex reversibly in living cells. Here we describe two classes of small molecules that bind to different sites on the Arp2/3 complex and inhibit its ability to nucleate actin filaments. CK-0944636 binds between Arp2 and Arp3, where it appears to block movement of Arp2 and Arp3 into their active conformation. CK-0993548 inserts into the hydrophobic core of Arp3 and alters its conformation. Both classes of compounds inhibit formation of actin filament comet tails by Listeria and podosomes by monocytes. Two inhibitors with different mechanisms of action provide a powerful approach for studying the Arp2/3 complex in living cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2780427/" 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/PMC2780427/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nolen, B J -- Tomasevic, N -- Russell, A -- Pierce, D W -- Jia, Z -- McCormick, C D -- Hartman, J -- Sakowicz, R -- Pollard, T D -- F32 GM074374-02/GM/NIGMS NIH HHS/ -- GM-066311/GM/NIGMS NIH HHS/ -- GM074374-02/GM/NIGMS NIH HHS/ -- P01 GM066311/GM/NIGMS NIH HHS/ -- P01 GM066311-01A1/GM/NIGMS NIH HHS/ -- P30 EB009998/EB/NIBIB NIH HHS/ -- England -- Nature. 2009 Aug 20;460(7258):1031-4. doi: 10.1038/nature08231. Epub 2009 Aug 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19648907" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Actin Cytoskeleton/drug effects/metabolism ; Actin-Related Protein 2/antagonists & inhibitors/chemistry/metabolism ; Actin-Related Protein 2-3 Complex/*antagonists & inhibitors/chemistry/metabolism ; Actin-Related Protein 3/antagonists & inhibitors/chemistry/metabolism ; Actins/chemistry/metabolism ; Animals ; Biopolymers/chemistry/metabolism ; Cattle ; Cell Line ; Crystallography, X-Ray ; Humans ; Hydrophobic and Hydrophilic Interactions ; Indoles/classification/metabolism/pharmacology ; Listeria/physiology ; Models, Molecular ; Monocytes/immunology ; Protein Conformation/drug effects ; Schizosaccharomyces ; Thiazoles/chemistry/classification/metabolism/pharmacology ; Thiophenes/classification/metabolism/pharmacology
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Publikationsdatum: 2009-07-07
    Beschreibung: Activator protein 1 (AP-1, also known as JUN) transcription factors are dimers of JUN, FOS, MAF and activating transcription factor (ATF) family proteins characterized by basic region and leucine zipper domains. Many AP-1 proteins contain defined transcriptional activation domains, but BATF and the closely related BATF3 (refs 2, 3) contain only a basic region and leucine zipper, and are considered to be inhibitors of AP-1 activity. Here we show that Batf is required for the differentiation of IL17-producing T helper (T(H)17) cells. T(H)17 cells comprise a CD4(+) T-cell subset that coordinates inflammatory responses in host defence but is pathogenic in autoimmunity. Batf(-/-) mice have normal T(H)1 and T(H)2 differentiation, but show a defect in T(H)17 differentiation, and are resistant to experimental autoimmune encephalomyelitis. Batf(-/-) T cells fail to induce known factors required for T(H)17 differentiation, such as RORgamma t (encoded by Rorc) and the cytokine IL21 (refs 14-17). Neither the addition of IL21 nor the overexpression of RORgamma t fully restores IL17 production in Batf(-/-) T cells. The Il17 promoter is BATF-responsive, and after T(H)17 differentiation, BATF binds conserved intergenic elements in the Il17a-Il17f locus and to the Il17, Il21 and Il22 (ref. 18) promoters. These results demonstrate that the AP-1 protein BATF has a critical role in T(H)17 differentiation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2716014/" 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/PMC2716014/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schraml, Barbara U -- Hildner, Kai -- Ise, Wataru -- Lee, Wan-Ling -- Smith, Whitney A-E -- Solomon, Ben -- Sahota, Gurmukh -- Sim, Julia -- Mukasa, Ryuta -- Cemerski, Saso -- Hatton, Robin D -- Stormo, Gary D -- Weaver, Casey T -- Russell, John H -- Murphy, Theresa L -- Murphy, Kenneth M -- AI035783/AI/NIAID NIH HHS/ -- AR049293/AR/NIAMS NIH HHS/ -- GM07200/GM/NIGMS NIH HHS/ -- HG00249/HG/NHGRI NIH HHS/ -- R01 HG000249/HG/NHGRI NIH HHS/ -- R01 HG000249-20/HG/NHGRI NIH HHS/ -- T32 GM008802/GM/NIGMS NIH HHS/ -- T32 GM008802-08/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2009 Jul 16;460(7253):405-9. doi: 10.1038/nature08114. Epub 2009 Jul 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Immunology, Washington University School of Medicine, 660 South Euclid Avenue, Saint Louis, Missouri 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19578362" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Basic-Leucine Zipper Transcription Factors/deficiency/genetics/*metabolism ; *Cell Differentiation ; Encephalomyelitis, Autoimmune, Experimental/genetics ; Female ; Gene Expression Regulation ; Genetic Predisposition to Disease ; Interleukin-17/biosynthesis/genetics/*metabolism ; Interleukins/genetics/metabolism/pharmacology ; Lymph Nodes/metabolism ; Male ; Mice ; Nuclear Receptor Subfamily 1, Group F, Member 3 ; Promoter Regions, Genetic/genetics ; Receptors, Retinoic Acid/genetics/metabolism ; Receptors, Thyroid Hormone/genetics/metabolism ; T-Lymphocytes, Helper-Inducer/*cytology/*metabolism ; Transcription Factor AP-1/deficiency/genetics/*metabolism
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Publikationsdatum: 2007-03-03
    Beschreibung: A hallmark of mammalian immunity is the heterogeneity of cell fate that exists among pathogen-experienced lymphocytes. We show that a dividing T lymphocyte initially responding to a microbe exhibits unequal partitioning of proteins that mediate signaling, cell fate specification, and asymmetric cell division. Asymmetric segregation of determinants appears to be coordinated by prolonged interaction between the T cell and its antigen-presenting cell before division. Additionally, the first two daughter T cells displayed phenotypic and functional indicators of being differentially fated toward effector and memory lineages. These results suggest a mechanism by which a single lymphocyte can apportion diverse cell fates necessary for adaptive immunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, John T -- Palanivel, Vikram R -- Kinjyo, Ichiko -- Schambach, Felix -- Intlekofer, Andrew M -- Banerjee, Arnob -- Longworth, Sarah A -- Vinup, Kristine E -- Mrass, Paul -- Oliaro, Jane -- Killeen, Nigel -- Orange, Jordan S -- Russell, Sarah M -- Weninger, Wolfgang -- Reiner, Steven L -- AI007532/AI/NIAID NIH HHS/ -- AI042370/AI/NIAID NIH HHS/ -- AI053827/AI/NIAID NIH HHS/ -- AI055428/AI/NIAID NIH HHS/ -- AI061699/AI/NIAID NIH HHS/ -- AI069380/AI/NIAID NIH HHS/ -- CA114114/CA/NCI NIH HHS/ -- CA87812/CA/NCI NIH HHS/ -- DK007066/DK/NIDDK NIH HHS/ -- GM007170/GM/NIGMS NIH HHS/ -- R01 AI061699/AI/NIAID NIH HHS/ -- T32 AI055428/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2007 Mar 23;315(5819):1687-91. Epub 2007 Mar 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Abramson Family Cancer Research Institute and Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17332376" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adoptive Transfer ; Animals ; Antigen Presentation ; Antigens, CD/analysis ; Antigens, CD8/analysis ; CD8-Positive T-Lymphocytes/*cytology/*immunology ; Cell Differentiation ; *Cell Division ; Cell Lineage ; Cell Polarity ; Dendritic Cells/immunology ; *Immunologic Memory ; Intracellular Signaling Peptides and Proteins/metabolism ; Listeria monocytogenes/immunology ; Listeriosis/immunology ; Lymphocyte Activation ; Membrane Proteins/analysis ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Mitosis ; Nerve Tissue Proteins/analysis ; Protein Kinase C/metabolism ; Receptors, Antigen, T-Cell/immunology ; Receptors, Interferon/analysis ; Signal Transduction ; T-Lymphocyte Subsets/*cytology/*immunology ; T-Lymphocytes, Helper-Inducer/immunology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2010-05-15
    Beschreibung: Mycobacterium tuberculosis has a penetrance of its host population that would be the envy of most human pathogens. About one-third of the human population would have a positive skin test for the infection and is thus thought to harbor the bacterium. Globally, 22 "high-burden" countries account for more than 80% of the active tuberculosis cases in the world, which shows the inequitable distribution of the disease. There is no effective vaccine against infection, and current drug therapies are fraught with problems, predominantly because of the protracted nature of the treatment and the increasing occurrence of drug resistance. Here we focus on the biology of the host-pathogen interaction and discuss new and evolving strategies for intervention.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2872107/" 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/PMC2872107/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Russell, David G -- Barry, Clifton E 3rd -- Flynn, JoAnne L -- AI057086/AI/NIAID NIH HHS/ -- AI067027/AI/NIAID NIH HHS/ -- AI080651/AI/NIAID NIH HHS/ -- AI50732/AI/NIAID NIH HHS/ -- HL055936/HL/NHLBI NIH HHS/ -- HL075845/HL/NHLBI NIH HHS/ -- HL092883/HL/NHLBI NIH HHS/ -- HL100928/HL/NHLBI NIH HHS/ -- HL71241/HL/NHLBI NIH HHS/ -- R01 AI037859/AI/NIAID NIH HHS/ -- R01 AI050732/AI/NIAID NIH HHS/ -- R01 AI050732-07/AI/NIAID NIH HHS/ -- R01 AI057086/AI/NIAID NIH HHS/ -- R01 AI057086-06A2/AI/NIAID NIH HHS/ -- R01 AI067027/AI/NIAID NIH HHS/ -- R01 AI067027-05/AI/NIAID NIH HHS/ -- R01 AI080651/AI/NIAID NIH HHS/ -- R01 AI080651-02/AI/NIAID NIH HHS/ -- R01 HL055936/HL/NHLBI NIH HHS/ -- R01 HL055936-14/HL/NHLBI NIH HHS/ -- R01 HL075845/HL/NHLBI NIH HHS/ -- R01 HL075845-05/HL/NHLBI NIH HHS/ -- R01 HL100928/HL/NHLBI NIH HHS/ -- R01 HL100928-01/HL/NHLBI NIH HHS/ -- R33 HL092883/HL/NHLBI NIH HHS/ -- R33 HL092883-02/HL/NHLBI NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2010 May 14;328(5980):852-6. doi: 10.1126/science.1184784.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA. dgr8@cornell.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20466922" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Antitubercular Agents/pharmacology/therapeutic use ; *BCG Vaccine/administration & dosage/immunology ; Biomarkers ; Disease Models, Animal ; Drug Discovery ; Drug Therapy, Combination ; Host-Pathogen Interactions ; Humans ; Mice ; *Mycobacterium tuberculosis/growth & development/immunology/metabolism ; Public Health Practice ; *Tuberculosis/drug therapy/immunology/microbiology/prevention & control ; Vaccination
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Publikationsdatum: 2010-12-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blight, Louise K -- Ainley, David G -- Ackley, Stephen F -- Ballard, Grant -- Ballerini, Tosca -- Brownell, Robert L Jr -- Cheng, C-H Christina -- Chiantore, Mariachiara -- Costa, Daniel -- Coulter, Malcolm C -- Dayton, Paul -- Devries, Arthur L -- Dunbar, Robert -- Earle, Sylvia -- Eastman, Joseph T -- Emslie, Steven D -- Evans, Clive W -- Garrott, Robert A -- Kim, Stacy -- Kooyman, Gerald -- Lescroel, Amelie -- Lizotte, Michael -- Massaro, Melanie -- Olmastroni, Silvia -- Ponganis, Paul J -- Russell, Joellen -- Siniff, Donald B -- Smith, Walker O Jr -- Stewart, Brent S -- Stirling, Ian -- Willis, Jay -- Wilson, Peter -- Woehler, Eric J -- New York, N.Y. -- Science. 2010 Dec 3;330(6009):1316. doi: 10.1126/science.330.6009.1316.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21127229" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antarctic Regions ; *Bass ; Certification ; *Conservation of Natural Resources ; *Ecosystem ; Fisheries/*standards
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Publikationsdatum: 2012-12-22
    Beschreibung: Most mammalian genes produce multiple distinct messenger RNAs through alternative splicing, but the extent of splicing conservation is not clear. To assess tissue-specific transcriptome variation across mammals, we sequenced complementary DNA from nine tissues from four mammals and one bird in biological triplicate, at unprecedented depth. We find that while tissue-specific gene expression programs are largely conserved, alternative splicing is well conserved in only a subset of tissues and is frequently lineage-specific. Thousands of previously unknown, lineage-specific, and conserved alternative exons were identified; widely conserved alternative exons had signatures of binding by MBNL, PTB, RBFOX, STAR, and TIA family splicing factors, implicating them as ancestral mammalian splicing regulators. Our data also indicate that alternative splicing often alters protein phosphorylatability, delimiting the scope of kinase signaling.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3568499/" 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/PMC3568499/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Merkin, Jason -- Russell, Caitlin -- Chen, Ping -- Burge, Christopher B -- OD011092/OD/NIH HHS/ -- R01 HG002439/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2012 Dec 21;338(6114):1593-9. doi: 10.1126/science.1228186.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23258891" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Alternative Splicing ; Animals ; Biological Evolution ; Cattle ; Chickens ; Conserved Sequence ; DNA, Complementary ; DNA-Binding Proteins/metabolism ; *Evolution, Molecular ; Exons ; Gene Expression Profiling ; *Gene Expression Regulation ; Introns ; Macaca mulatta ; Male ; Mammals/*genetics ; Mice ; Models, Genetic ; Phosphorylation ; Phylogeny ; Protein Isoforms/chemistry/*genetics/metabolism ; Protein Kinases/genetics/metabolism ; RNA Splice Sites ; RNA Splicing ; RNA-Binding Proteins/metabolism ; Rats ; Sequence Analysis, DNA ; *Transcriptome
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Publikationsdatum: 2011-03-25
    Beschreibung: Systematic annotation of gene regulatory elements is a major challenge in genome science. Direct mapping of chromatin modification marks and transcriptional factor binding sites genome-wide has successfully identified specific subtypes of regulatory elements. In Drosophila several pioneering studies have provided genome-wide identification of Polycomb response elements, chromatin states, transcription factor binding sites, RNA polymerase II regulation and insulator elements; however, comprehensive annotation of the regulatory genome remains a significant challenge. Here we describe results from the modENCODE cis-regulatory annotation project. We produced a map of the Drosophila melanogaster regulatory genome on the basis of more than 300 chromatin immunoprecipitation data sets for eight chromatin features, five histone deacetylases and thirty-eight site-specific transcription factors at different stages of development. Using these data we inferred more than 20,000 candidate regulatory elements and validated a subset of predictions for promoters, enhancers and insulators in vivo. We identified also nearly 2,000 genomic regions of dense transcription factor binding associated with chromatin activity and accessibility. We discovered hundreds of new transcription factor co-binding relationships and defined a transcription factor network with over 800 potential regulatory relationships.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3179250/" 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/PMC3179250/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Negre, Nicolas -- Brown, Christopher D -- Ma, Lijia -- Bristow, Christopher Aaron -- Miller, Steven W -- Wagner, Ulrich -- Kheradpour, Pouya -- Eaton, Matthew L -- Loriaux, Paul -- Sealfon, Rachel -- Li, Zirong -- Ishii, Haruhiko -- Spokony, Rebecca F -- Chen, Jia -- Hwang, Lindsay -- Cheng, Chao -- Auburn, Richard P -- Davis, Melissa B -- Domanus, Marc -- Shah, Parantu K -- Morrison, Carolyn A -- Zieba, Jennifer -- Suchy, Sarah -- Senderowicz, Lionel -- Victorsen, Alec -- Bild, Nicholas A -- Grundstad, A Jason -- Hanley, David -- MacAlpine, David M -- Mannervik, Mattias -- Venken, Koen -- Bellen, Hugo -- White, Robert -- Gerstein, Mark -- Russell, Steven -- Grossman, Robert L -- Ren, Bing -- Posakony, James W -- Kellis, Manolis -- White, Kevin P -- F32 GM074364/GM/NIGMS NIH HHS/ -- F32 GM074364-01/GM/NIGMS NIH HHS/ -- F32 GM074364-02/GM/NIGMS NIH HHS/ -- P50 GM081892/GM/NIGMS NIH HHS/ -- R01 HG004037/HG/NHGRI NIH HHS/ -- R01 HG004037-04/HG/NHGRI NIH HHS/ -- RC2 HG005639/HG/NHGRI NIH HHS/ -- RC2 HG005639-02/HG/NHGRI NIH HHS/ -- U01 HG004264/HG/NHGRI NIH HHS/ -- U01 HG004279/HG/NHGRI NIH HHS/ -- U01HG004264/HG/NHGRI NIH HHS/ -- England -- Nature. 2011 Mar 24;471(7339):527-31. doi: 10.1038/nature09990.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Genomics and Systems Biology, Department of Human Genetics, The University of Chicago, 900 East 57th Street, Chicago, Illinois 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21430782" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chromatin/metabolism ; Chromatin Assembly and Disassembly ; Chromatin Immunoprecipitation ; Drosophila melanogaster/*genetics ; Enhancer Elements, Genetic/genetics ; Genome, Insect/*genetics ; Histone Deacetylases/metabolism ; Insulator Elements/genetics ; *Molecular Sequence Annotation ; Promoter Regions, Genetic/genetics ; Regulatory Sequences, Nucleic Acid/*genetics ; Reproducibility of Results ; Silencer Elements, Transcriptional/genetics ; Transcription Factors/metabolism
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Publikationsdatum: 2012-04-13
    Beschreibung: Duchenne muscular dystrophy (DMD) is a severe and progressive muscle wasting disorder caused by mutations in the dystrophin gene that result in the absence of the membrane-stabilizing protein dystrophin. Dystrophin-deficient muscle fibres are fragile and susceptible to an influx of Ca(2+), which activates inflammatory and muscle degenerative pathways. At present there is no cure for DMD, and existing therapies are ineffective. Here we show that increasing the expression of intramuscular heat shock protein 72 (Hsp72) preserves muscle strength and ameliorates the dystrophic pathology in two mouse models of muscular dystrophy. Treatment with BGP-15 (a pharmacological inducer of Hsp72 currently in clinical trials for diabetes) improved muscle architecture, strength and contractile function in severely affected diaphragm muscles in mdx dystrophic mice. In dko mice, a phenocopy of DMD that results in severe spinal curvature (kyphosis), muscle weakness and premature death, BGP-15 decreased kyphosis, improved the dystrophic pathophysiology in limb and diaphragm muscles and extended lifespan. We found that the sarcoplasmic/endoplasmic reticulum Ca(2+)-ATPase (SERCA, the main protein responsible for the removal of intracellular Ca(2+)) is dysfunctional in severely affected muscles of mdx and dko mice, and that Hsp72 interacts with SERCA to preserve its function under conditions of stress, ultimately contributing to the decreased muscle degeneration seen with Hsp72 upregulation. Treatment with BGP-15 similarly increased SERCA activity in dystrophic skeletal muscles. Our results provide evidence that increasing the expression of Hsp72 in muscle (through the administration of BGP-15) has significant therapeutic potential for DMD and related conditions, either as a self-contained therapy or as an adjuvant with other potential treatments, including gene, cell and pharmacological therapies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gehrig, Stefan M -- van der Poel, Chris -- Sayer, Timothy A -- Schertzer, Jonathan D -- Henstridge, Darren C -- Church, Jarrod E -- Lamon, Severine -- Russell, Aaron P -- Davies, Kay E -- Febbraio, Mark A -- Lynch, Gordon S -- GTB07001/Telethon/Italy -- MC_U137761449/Medical Research Council/United Kingdom -- England -- Nature. 2012 Apr 4;484(7394):394-8. doi: 10.1038/nature10980.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Basic and Clinical Myology Laboratory, Department of Physiology, University of Melbourne, Victoria, 3010, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22495301" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Calcium-Transporting ATPases/metabolism ; Diaphragm/drug effects/physiology ; Disease Models, Animal ; *Disease Progression ; Female ; Gene Expression Regulation/drug effects ; HSP72 Heat-Shock Proteins/biosynthesis/genetics/*metabolism ; Kyphosis/drug therapy ; Longevity/drug effects ; Male ; Mice ; Mice, Inbred mdx ; Mice, Transgenic ; Muscle, Skeletal/drug effects/*physiology/physiopathology ; Muscular Dystrophy, Duchenne/genetics/*metabolism/pathology/*physiopathology ; Oximes/pharmacology ; Piperidines/pharmacology ; Rats
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Publikationsdatum: 2013-03-01
    Beschreibung: The rapid cell turnover of the intestinal epithelium is achieved from small numbers of stem cells located in the base of glandular crypts. These stem cells have been variously described as rapidly cycling or quiescent. A functional arrangement of stem cells that reconciles both of these behaviours has so far been difficult to obtain. Alternative explanations for quiescent cells have been that they act as a parallel or reserve population that replace rapidly cycling stem cells periodically or after injury; their exact nature remains unknown. Here we show mouse intestinal quiescent cells to be precursors that are committed to mature into differentiated secretory cells of the Paneth and enteroendocrine lineage. However, crucially we find that after intestinal injury they are capable of extensive proliferation and can give rise to clones comprising the main epithelial cell types. Thus, quiescent cells can be recalled to the stem-cell state. These findings establish quiescent cells as an effective clonogenic reserve and provide a motivation for investigating their role in pathologies such as colorectal cancers and intestinal inflammation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buczacki, Simon J A -- Zecchini, Heather Ireland -- Nicholson, Anna M -- Russell, Roslin -- Vermeulen, Louis -- Kemp, Richard -- Winton, Douglas J -- Cancer Research UK/United Kingdom -- England -- Nature. 2013 Mar 7;495(7439):65-9. doi: 10.1038/nature11965. Epub 2013 Feb 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research UK Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23446353" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biomarkers/analysis/metabolism ; Cell Differentiation ; Cell Division ; *Cell Lineage ; Cell Separation ; Clone Cells/cytology/metabolism ; Intestinal Neoplasms/pathology ; Intestines/cytology/injuries/pathology ; Mice ; Multipotent Stem Cells/*cytology/metabolism/*secretion ; Paneth Cells/*cytology/*metabolism ; Receptors, G-Protein-Coupled/*metabolism ; Regeneration ; Staining and Labeling ; Stem Cell Niche
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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