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  • Rats  (4)
  • American Association for the Advancement of Science (AAAS)  (4)
  • 1
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    DNA repair pathway stimulated by the forkhead transcription factor FOXO3a through the Gadd45 protein (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-20
    Description: The signaling pathway from phosphoinositide 3-kinase to the protein kinase Akt controls organismal life-span in invertebrates and cell survival and proliferation in mammals by inhibiting the activity of members of the FOXO family of transcription factors. We show that mammalian FOXO3a also functions at the G2 to M checkpoint in the cell cycle and triggers the repair of damaged DNA. By gene array analysis, FOXO3a was found to modulate the expression of several genes that regulate the cellular response to stress at the G2-M checkpoint. The growth arrest and DNA damage response gene Gadd45a appeared to be a direct target of FOXO3a that mediates part of FOXO3a's effects on DNA repair. These findings indicate that in mammals FOXO3a regulates the resistance of cells to stress by inducing DNA repair and thereby may also affect organismal life-span.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tran, Hien -- Brunet, Anne -- Grenier, Jill M -- Datta, Sandeep R -- Fornace, Albert J Jr -- DiStefano, Peter S -- Chiang, Lillian W -- Greenberg, Michael E -- NIHP30-HD18655/HD/NICHD NIH HHS/ -- P01-HD24926/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2002 Apr 19;296(5567):530-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neuroscience, Children's Hospital and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11964479" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Chromones/pharmacology ; DNA Damage ; *DNA Repair ; DNA-Binding Proteins/genetics/*metabolism ; Forkhead Transcription Factors ; G2 Phase ; Gene Expression Profiling ; Gene Expression Regulation ; Genes, Reporter ; Humans ; Intracellular Signaling Peptides and Proteins ; Mitosis ; Morpholines/pharmacology ; Promoter Regions, Genetic ; Proteins/genetics/*metabolism ; Rats ; Recombinant Fusion Proteins/metabolism ; Tamoxifen/*analogs & derivatives/pharmacology ; Transcription Factors/genetics/*metabolism ; Transfection ; Ultraviolet Rays
    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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  • 2
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    Integrins regulate Rac targeting by internalization of membrane domains (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-07
    Description: Translocation of the small GTP-binding protein Rac1 to the cell plasma membrane is essential for activating downstream effectors and requires integrin-mediated adhesion of cells to extracellular matrix. We report that active Rac1 binds preferentially to low-density, cholesterol-rich membranes, and specificity is determined at least in part by membrane lipids. Cell detachment triggered internalization of plasma membrane cholesterol and lipid raft markers. Preventing internalization maintained Rac1 membrane targeting and effector activation in nonadherent cells. Regulation of lipid rafts by integrin signals may regulate the location of membrane domains such as lipid rafts and thereby control domain-specific signaling events in anchorage-dependent cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉del Pozo, Miguel A -- Alderson, Nazilla B -- Kiosses, William B -- Chiang, Hui-Hsien -- Anderson, Richard G W -- Schwartz, Martin A -- GM52016/GM/NIGMS NIH HHS/ -- HL 20948/HL/NHLBI NIH HHS/ -- R01 GM47214/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2004 Feb 6;303(5659):839-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA. mdelpozo@scripps.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14764880" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD29/metabolism ; Binding Sites ; Cell Adhesion ; Cell Line ; Cell Membrane/*metabolism ; Cells, Cultured ; Cholera Toxin/metabolism ; Cholesterol/metabolism ; G(M1) Ganglioside/metabolism ; Glycosylphosphatidylinositols/metabolism ; Guanosine Triphosphate/metabolism ; Humans ; Integrins/*metabolism ; Liposomes/metabolism ; Membrane Microdomains/*metabolism ; Mice ; NIH 3T3 Cells ; Rats ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transfection ; rac1 GTP-Binding Protein/genetics/*metabolism
    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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  • 3
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    A role for a 70-kilodalton heat shock protein in lysosomal degradation of intracellular proteins (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-10-20
    Description: A 73-kilodalton (kD) intracellular protein was found to bind to peptide regions that target intracellular proteins for lysosomal degradation in response to serum withdrawal. This protein cross-reacted with a monoclonal antibody raised to a member of the 70-kD heat shock protein (hsp70) family, and sequences of two internal peptides of the 73-kD protein confirm that it is a member of this family. In response to serum withdrawal, the intracellular concentration of the 73-kD protein increased severalfold. In the presence of adenosine 5'-triphosphate (ATP) and MgCl2, the 73-kD protein enhanced protein degradation in two different cell-free assays for lysosomal proteolysis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chiang, H L -- Terlecky, S R -- Plant, C P -- Dice, J F -- AG06116/AG/NIA NIH HHS/ -- DK07542/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1989 Oct 20;246(4928):382-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, Tufts University School of Medicine, Boston, MA 02111.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2799391" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cells, Cultured ; Heat-Shock Proteins/genetics/*physiology ; Immunoblotting ; Lysosomes/*metabolism ; Molecular Sequence Data ; Rats ; Ribonuclease, Pancreatic/genetics/*metabolism ; Sequence Homology, Nucleic Acid
    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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  • 4
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    Dopaminergic neurons protected from degeneration by GDNF gene therapy (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-02-07
    Description: Glial cell line-derived neurotrophic factor (GDNF) supports growth and survival of dopaminergic (DA) neurons. A replication-defective adenoviral (Ad) vector encoding human GDNF injected near the rat substantia nigra was found to protect DA neurons from the progressive degeneration induced by the neurotoxin 6-hydroxydopamine (6-OHDA) injected into the striatum. Ad GDNF gene therapy reduced loss of DA neurons approximately threefold 6 weeks after 6-OHDA lesion, as compared with no treatment or injection of Ad lacZ or Ad mGDNF (encoding a biologically inactive deletion mutant GDNF). These results suggest that Ad vector-mediated GDNF gene therapy may slow the DA neuronal cell loss in humans with Parkinson's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Choi-Lundberg, D L -- Lin, Q -- Chang, Y N -- Chiang, Y L -- Hay, C M -- Mohajeri, H -- Davidson, B L -- Bohn, M C -- NS31957/NS/NINDS NIH HHS/ -- T32AG00107/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1997 Feb 7;275(5301):838-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology and Anatomy, University of Rochester, Box 603, 601 Elmwood Avenue, Rochester, NY 14642, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9012352" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviridae/genetics ; Animals ; Corpus Striatum/metabolism/pathology ; Dopamine/*physiology ; Gene Expression ; *Genetic Therapy ; Genetic Vectors ; Glial Cell Line-Derived Neurotrophic Factor ; Humans ; Male ; Molecular Sequence Data ; *Nerve Degeneration ; *Nerve Growth Factors ; Nerve Tissue Proteins/*genetics ; Neurons/pathology/physiology ; *Neuroprotective Agents ; Oxidopamine ; PC12 Cells ; Parkinson Disease/pathology/*therapy ; Rats ; Rats, Inbred F344 ; Substantia Nigra/metabolism/pathology ; Transgenes
    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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