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  • 1
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    Derepression of BDNF transcription involves calcium-dependent phosphorylation of MeCP2 (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-11-01
    Beschreibung: Mutations in MeCP2, which encodes a protein that has been proposed to function as a global transcriptional repressor, are the cause of Rett syndrome (RT T), an X-linked progressive neurological disorder. Although the selective inactivation of MeCP2 in neurons is sufficient to confer a Rett-like phenotype in mice, the specific functions of MeCP2 in postmitotic neurons are not known. We find that MeCP2 binds selectively to BDNF promoter III and functions to repress expression of the BDNF gene. Membrane depolarization triggers the calcium-dependent phosphorylation and release of MeCP2 from BDNF promoter III, thereby facilitating transcription. These studies indicate that MeCP2 plays a key role in the control of neuronal activity-dependent gene regulation and suggest that the deregulation of this process may underlie the pathology of RT T.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Wen G -- Chang, Qiang -- Lin, Yingxi -- Meissner, Alexander -- West, Anne E -- Griffith, Eric C -- Jaenisch, Rudolf -- Greenberg, Michael E -- HD 18655/HD/NICHD NIH HHS/ -- NS28829/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Oct 31;302(5646):885-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neuroscience, Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14593183" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain-Derived Neurotrophic Factor/*genetics ; Calcium/*metabolism ; Cell Membrane/physiology ; Cells, Cultured ; *Chromosomal Proteins, Non-Histone ; Cloning, Molecular ; CpG Islands ; DNA Methylation ; DNA-Binding Proteins/*metabolism ; Electrophoretic Mobility Shift Assay ; *Gene Expression Regulation ; Gene Silencing ; Histones/metabolism ; Methyl-CpG-Binding Protein 2 ; Methylation ; Mice ; Mice, Knockout ; Neurons/metabolism/physiology ; Phosphorylation ; Potassium Chloride/pharmacology ; Precipitin Tests ; Promoter Regions, Genetic ; Rats ; *Repressor Proteins ; Rett Syndrome/genetics ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Influence of SHIP on the NK repertoire and allogeneic bone marrow transplantation (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2002-03-16
    Beschreibung: Natural killer cell (NK) receptors for major histocompatibility complex (MHC) class I influence engraftment and graft-versus-tumor effects after allogeneic bone marrow transplantation. We find that SH2-containing inositol phosphatase (SHIP) influences the repertoire of NK receptors. In adult SHIP-/- mice, the NK compartment is dominated by cells that express two inhibitory receptors capable of binding either self or allogeneic MHC ligands. This promiscuous repertoire has significant functional consequences, because SHIP-/- mice fail to reject fully mismatched allogeneic marrow grafts and show enhanced survival after such transplants. Thus, SHIP plays an important role in two processes that limit the success of allogeneic marrow transplantation: graft rejection and graft-versus-host disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Jia-Wang -- Howson, Julie M -- Ghansah, Tomar -- Desponts, Caroline -- Ninos, John M -- May, Sarah L -- Nguyen, Kim H T -- Toyama-Sorimachi, Noriko -- Kerr, William G -- P01 NS27405/NS/NINDS NIH HHS/ -- R01 DK54767/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2002 Mar 15;295(5562):2094-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunology Program, H. Lee Moffitt Comprehensive Cancer Center and Research Institute, University of South Florida, Tampa, FL 33612, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11896280" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigens, CD/metabolism ; *Antigens, Ly ; Bone Marrow Transplantation/*immunology ; Cell Survival ; Graft Rejection/*immunology ; Graft Survival ; Graft vs Host Disease/*immunology ; H-2 Antigens/immunology/metabolism ; Haplotypes ; Histocompatibility Antigens Class I/immunology/metabolism ; Killer Cells, Natural/enzymology/*immunology/metabolism ; *Lectins, C-Type ; Ligands ; Lymphocyte Count ; Lymphocyte Subsets/immunology/metabolism ; Membrane Glycoproteins/metabolism ; Mice ; Mice, Inbred A ; Mice, Inbred BALB C ; NK Cell Lectin-Like Receptor Subfamily D ; Phosphatidylinositol 3-Kinases/metabolism ; Phosphoric Monoester Hydrolases/chemistry/genetics/*metabolism ; Phosphorylation ; *Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Receptors, Immunologic/metabolism ; Receptors, NK Cell Lectin-Like ; Signal Transduction ; Transplantation, Homologous ; src Homology Domains
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    Glycosylation of nucleocytoplasmic proteins: signal transduction and O-GlcNAc (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2001-03-28
    Beschreibung: The dynamic glycosylation of serine or threonine residues on nuclear and cytosolic proteins by O-linked beta-N-acetylglucosamine (O-GlcNAc) is abundant in all multicellular eukaryotes. On several proteins, O-GlcNAc and O-phosphate alternatively occupy the same or adjacent sites, leading to the hypothesis that one function of this saccharide is to transiently block phosphorylation. The diversity of proteins modified by O-GlcNAc implies its importance in many basic cellular and disease processes. Here we systematically examine the current data implicating O-GlcNAc as a regulatory modification important to signal transduction cascades.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wells, L -- Vosseller, K -- Hart, G W -- CA42486/CA/NCI NIH HHS/ -- CA83261/CA/NCI NIH HHS/ -- GM20528/GM/NIGMS NIH HHS/ -- HD13563/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2001 Mar 23;291(5512):2376-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, Johns Hopkins School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11269319" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylglucosamine/*metabolism ; Animals ; Cell Nucleus/*metabolism ; Cytoplasm/*metabolism ; Glucose/metabolism ; Glycoproteins/metabolism ; Glycosylation ; Humans ; N-Acetylglucosaminyltransferases/metabolism ; Nuclear Proteins/metabolism ; Phosphorylation ; Proteins/*metabolism ; *Signal Transduction
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    Mitochondrial dysfunction in the elderly: possible role in insulin resistance (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-17
    Beschreibung: Insulin resistance is a major factor in the pathogenesis of type 2 diabetes in the elderly. To investigate how insulin resistance arises, we studied healthy, lean, elderly and young participants matched for lean body mass and fat mass. Elderly study participants were markedly insulin-resistant as compared with young controls, and this resistance was attributable to reduced insulin-stimulated muscle glucose metabolism. These changes were associated with increased fat accumulation in muscle and liver tissue assessed by 1H nuclear magnetic resonance (NMR) spectroscopy, and with a approximately 40% reduction in mitochondrial oxidative and phosphorylation activity, as assessed by in vivo 13C/31P NMR spectroscopy. These data support the hypothesis that an age-associated decline in mitochondrial function contributes to insulin resistance in the elderly.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3004429/" 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/PMC3004429/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Petersen, Kitt Falk -- Befroy, Douglas -- Dufour, Sylvie -- Dziura, James -- Ariyan, Charlotte -- Rothman, Douglas L -- DiPietro, Loretta -- Cline, Gary W -- Shulman, Gerald I -- K-23 DK-02347/DK/NIDDK NIH HHS/ -- K23 DK002734/DK/NIDDK NIH HHS/ -- K23 DK002734-04/DK/NIDDK NIH HHS/ -- M01 RR-00125/RR/NCRR NIH HHS/ -- P30 DK-45735/DK/NIDDK NIH HHS/ -- P60 AG-10469/AG/NIA NIH HHS/ -- R01 AG-09872/AG/NIA NIH HHS/ -- R01 AG023686/AG/NIA NIH HHS/ -- R01 AG023686-01A1/AG/NIA NIH HHS/ -- R01 DK-49230/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2003 May 16;300(5622):1140-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12750520" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adipose Tissue ; Adolescent ; Adult ; Aged ; Aged, 80 and over ; Aging/metabolism ; Blood Glucose/metabolism ; Body Mass Index ; Female ; Humans ; Insulin/metabolism ; *Insulin Resistance ; Liver/metabolism ; Male ; Middle Aged ; Mitochondria/*metabolism ; Mitochondrial Diseases/blood/*complications/metabolism ; Muscle, Skeletal/metabolism ; Nuclear Magnetic Resonance, Biomolecular ; Oxidation-Reduction ; Oxygen Consumption ; Phosphorylation ; Triglycerides/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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