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  • American Association for the Advancement of Science (AAAS)  (163)
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  • 1
    Publication Date: 1997-07-04
    Description: Angiogenesis is thought to depend on a precise balance of positive and negative regulation. Angiopoietin-1 (Ang1) is an angiogenic factor that signals through the endothelial cell-specific Tie2 receptor tyrosine kinase. Like vascular endothelial growth factor, Ang1 is essential for normal vascular development in the mouse. An Ang1 relative, termed angiopoietin-2 (Ang2), was identified by homology screening and shown to be a naturally occurring antagonist for Ang1 and Tie2. Transgenic overexpression of Ang2 disrupts blood vessel formation in the mouse embryo. In adult mice and humans, Ang2 is expressed only at sites of vascular remodeling. Natural antagonists for vertebrate receptor tyrosine kinases are atypical; thus, the discovery of a negative regulator acting on Tie2 emphasizes the need for exquisite regulation of this angiogenic receptor system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maisonpierre, P C -- Suri, C -- Jones, P F -- Bartunkova, S -- Wiegand, S J -- Radziejewski, C -- Compton, D -- McClain, J -- Aldrich, T H -- Papadopoulos, N -- Daly, T J -- Davis, S -- Sato, T N -- Yancopoulos, G D -- New York, N.Y. -- Science. 1997 Jul 4;277(5322):55-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Regeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY 10591, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9204896" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Angiopoietin-1 ; Angiopoietin-2 ; Animals ; Blood Vessels/embryology/*metabolism ; Cells, Cultured ; Cloning, Molecular ; Embryo, Mammalian/metabolism ; Endothelial Growth Factors/genetics/metabolism ; Endothelium, Vascular/*cytology/metabolism ; Female ; Humans ; Ligands ; Lymphokines/genetics/metabolism ; Membrane Glycoproteins/antagonists & inhibitors/metabolism ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; *Neovascularization, Physiologic ; Phosphorylation ; Proteins/chemistry/*metabolism ; Rats ; Rats, Sprague-Dawley ; Receptor Protein-Tyrosine Kinases/*antagonists & inhibitors/metabolism ; Receptor, TIE-2 ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-03-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thomas, K R -- Capecchi, M R -- New York, N.Y. -- Science. 1997 Mar 7;275(5305):1404-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9072801" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Anemia, Sickle Cell/*genetics ; B-Lymphocytes ; Cells, Cultured ; DNA, Recombinant ; *Gene Conversion ; Hemoglobin, Sickle/*genetics ; Humans ; Mutation ; Oligonucleotides/*genetics
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  • 3
    Publication Date: 1997-06-13
    Description: Two families of small peptides that bind to the human thrombopoietin receptor and compete with the binding of the natural ligand thrombopoietin (TPO) were identified from recombinant peptide libraries. The sequences of these peptides were not found in the primary sequence of TPO. Screening libraries of variants of one of these families under affinity-selective conditions yielded a 14-amino acid peptide (Ile-Glu-Gly-Pro-Thr-Leu-Arg-Gln-Trp-Leu-Ala-Ala-Arg-Ala) with high affinity (dissociation constant approximately 2 nanomolar) that stimulates the proliferation of a TPO-responsive Ba/F3 cell line with a median effective concentration (EC50) of 400 nanomolar. Dimerization of this peptide by a carboxyl-terminal linkage to a lysine branch produced a compound with an EC50 of 100 picomolar, which was equipotent to the 332-amino acid natural cytokine in cell-based assays. The peptide dimer also stimulated the in vitro proliferation and maturation of megakaryocytes from human bone marrow cells and promoted an increase in platelet count when administered to normal mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cwirla, S E -- Balasubramanian, P -- Duffin, D J -- Wagstrom, C R -- Gates, C M -- Singer, S C -- Davis, A M -- Tansik, R L -- Mattheakis, L C -- Boytos, C M -- Schatz, P J -- Baccanari, D P -- Wrighton, N C -- Barrett, R W -- Dower, W J -- New York, N.Y. -- Science. 1997 Jun 13;276(5319):1696-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Affymax Research Institute, 4001 Miranda Avenue, Palo Alto, CA 94304, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9180079" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding, Competitive ; Blood Platelets/cytology ; Cell Division ; Cell Line ; Cells, Cultured ; Consensus Sequence ; Dimerization ; Erythropoietin/pharmacology ; Hematopoiesis/drug effects ; Humans ; Megakaryocytes/cytology ; Mice ; Molecular Sequence Data ; *Neoplasm Proteins ; Oligopeptides/*metabolism/*pharmacology ; Peptide Library ; Peptides/metabolism/pharmacology ; Platelet Count ; Proto-Oncogene Proteins/*agonists/metabolism ; *Receptors, Cytokine ; Receptors, Thrombopoietin ; Recombinant Proteins/metabolism/pharmacology ; Thrombopoietin/*metabolism/pharmacology ; Transfection
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-08-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1997 Aug 22;277(5329):1037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9289850" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Axonal Transport ; Axons/*metabolism ; Cell Nucleus/metabolism ; Cells, Cultured ; Cyclic AMP Response Element-Binding Protein/metabolism ; Gene Expression Regulation ; Nerve Growth Factors/*metabolism ; Neurons/*metabolism ; Proto-Oncogene Proteins/metabolism ; Rats ; Receptor Protein-Tyrosine Kinases/metabolism ; Receptor, trkA ; Receptors, Nerve Growth Factor/metabolism ; *Signal Transduction
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  • 5
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-05-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1997 May 2;276(5313):682.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9157547" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/diagnosis/enzymology/*genetics ; Brain/*enzymology ; Cells, Cultured ; Electron Transport Complex IV/*genetics/metabolism ; Energy Metabolism ; Humans ; Mitochondria/*genetics ; Mutation
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  • 6
    Publication Date: 1997-04-25
    Description: Spinal cord injuries result in paralysis, because when damaged neurons die they are not replaced. Neurogenesis of electrophysiologically functional neurons occurred in spinal cord cultured from postnatal rats. In these cultures, the numbers of immunocytochemically identified neurons increased over time. Additionally, neurons identified immunocytochemically or electrophysiologically incorporated bromodeoxyuridine, confirming they had differentiated from mitotic cells in vitro. These findings suggest that postnatal spinal cord retains the capacity to generate functional neurons. The presence of neuronal precursor cells in postnatal spinal cord may offer new therapeutic approaches for restoration of function to individuals with spinal cord injuries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kehl, L J -- Fairbanks, C A -- Laughlin, T M -- Wilcox, G L -- DA07097/DA/NIDA NIH HHS/ -- DA07234/DA/NIDA NIH HHS/ -- DE00225/DE/NIDCR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 Apr 25;276(5312):586-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN 55455, USA. 55455, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9110976" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Bromodeoxyuridine/metabolism ; Cell Differentiation ; Cells, Cultured ; Culture Media ; Glial Fibrillary Acidic Protein/analysis ; Immunohistochemistry ; Mitosis ; Neurons/chemistry/*cytology/metabolism ; Phosphopyruvate Hydratase/analysis ; Rats ; Spinal Cord/chemistry/*cytology ; Tubulin/analysis
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  • 7
    Publication Date: 1997-12-31
    Description: Natural killer T (NKT) lymphocytes express an invariant T cell antigen receptor (TCR) encoded by the Valpha14 and Jalpha281 gene segments. A glycosylceramide-containing alpha-anomeric sugar with a longer fatty acyl chain (C26) and sphingosine base (C18) was identified as a ligand for this TCR. Glycosylceramide-mediated proliferative responses of Valpha14 NKT cells were abrogated by treatment with chloroquine-concanamycin A or by monoclonal antibodies against CD1d/Vbeta8, CD40/CD40L, or B7/CTLA-4/CD28, but not by interference with the function of a transporter-associated protein. Thus, this lymphocyte shares distinct recognition systems with either T or NK cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kawano, T -- Cui, J -- Koezuka, Y -- Toura, I -- Kaneko, Y -- Motoki, K -- Ueno, H -- Nakagawa, R -- Sato, H -- Kondo, E -- Koseki, H -- Taniguchi, M -- New York, N.Y. -- Science. 1997 Nov 28;278(5343):1626-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CREST (Core Research for Evolutional Science and Technology) Project, Japan Science and Technology Corporation (JST), 1-8-1 Inohana, Chuo, Chiba 260, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9374463" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD1/*immunology ; Carbohydrate Conformation ; Cells, Cultured ; Ceramides/chemistry/metabolism/*pharmacology ; Cerebrosides/chemistry/metabolism/*pharmacology ; Coculture Techniques ; Galactosylceramides/chemistry/metabolism/pharmacology ; Glucosylceramides/chemistry/metabolism/pharmacology ; Killer Cells, Natural/*immunology ; Ligands ; *Lymphocyte Activation ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Receptors, Antigen, T-Cell, alpha-beta/*immunology ; Structure-Activity Relationship ; T-Lymphocyte Subsets/*immunology
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  • 8
    Publication Date: 1997-01-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keulen, W -- Nijhuis, M -- Schuurman, R -- Berkhout, B -- Boucher, C -- New York, N.Y. -- Science. 1997 Jan 10;275(5297):229; author reply 230-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8999550" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-HIV Agents/*pharmacology ; Cells, Cultured ; Drug Resistance, Microbial ; Drug Therapy, Combination ; Genetic Variation ; HIV Infections/drug therapy/virology ; HIV Reverse Transcriptase/*genetics/metabolism ; HIV-1/drug effects/*enzymology/genetics ; Humans ; Lamivudine/*pharmacology/therapeutic use ; Mutation ; Reverse Transcriptase Inhibitors/*pharmacology ; Zidovudine/therapeutic use
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-02-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 1997 Feb 28;275(5304):1258.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9064779" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*immunology/virology ; CD4-Positive T-Lymphocytes/immunology/*virology ; Cells, Cultured ; HIV/*physiology ; Humans ; Immunity, Innate ; Male ; Virus Replication
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  • 10
    Publication Date: 1997-05-30
    Description: Despite myriads of biological activities ascribed to uteroglobin (UG), a steroid-inducible secreted protein, its physiological functions are unknown. Mice in which the uteroglobin gene was disrupted had severe renal disease that was associated with massive glomerular deposition of predominantly multimeric fibronectin (Fn). The molecular mechanism that normally prevents Fn deposition appears to involve high-affinity binding of UG with Fn to form Fn-UG heteromers that counteract Fn self-aggregation, which is required for abnormal tissue deposition. Thus, UG is essential for maintaining normal renal function in mice, which raises the possibility that an analogous pathogenic mechanism may underlie genetic Fn-deposit human glomerular disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Z -- Kundu, G C -- Yuan, C J -- Ward, J M -- Lee, E J -- DeMayo, F -- Westphal, H -- Mukherjee, A B -- HL47620/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1997 May 30;276(5317):1408-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section on Developmental Genetics, Heritable Disorders Branch, National Institute of Child Health and Human Development (NICHD), National Insitutes of Health (NIH), Bethesda, MD 20892-1830, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9162006" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Crosses, Genetic ; Fibronectins/*metabolism ; Gene Targeting ; Humans ; Kidney Diseases/embryology/genetics/pathology ; *Kidney Glomerulus/embryology/metabolism/ultrastructure ; Mice ; Mice, Inbred C57BL ; Uteroglobin/deficiency/genetics/*physiology
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  • 11
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-05-02
    Description: Interest in bacterial pathogenesis has recently increased because of antibiotic resistance, the emergence of new pathogens and the resurgence of old ones, and the lack of effective therapeutics. The molecular and cellular mechanisms of microbial pathogenesis are currently being defined, with precise knowledge of both the common strategies used by multiple pathogenic bacteria and the unique tactics evolved by individual species to help establish infection. What is emerging is a new appreciation of how bacterial pathogens interact with host cells. Many host cell functions, including signal transduction pathways, cytoskeletal rearrangements, and vacuolar trafficking, are exploited, and these are the focus of this review. A bonus of this work is that bacterial virulence factors are providing new tools to study various aspects of mammalian cell functions, in addition to mechanisms of bacterial disease. Together these developments may lead to new therapeutic strategies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finlay, B B -- Cossart, P -- New York, N.Y. -- Science. 1997 May 2;276(5313):718-25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biotechnology Laboratory, University of British Columbia, Vancouver, B.C., Canada, V6T-1Z3. bfinlay@unixg.ubc.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9115192" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Bacteria/genetics/*pathogenicity ; *Bacterial Adhesion ; Bacterial Infections/*microbiology ; Bacterial Physiological Phenomena ; Bacterial Toxins/toxicity ; Cells, Cultured ; Cytoskeleton/physiology ; Epithelial Cells ; Epithelium/microbiology ; Humans ; Phagocytosis ; Signal Transduction ; Vacuoles/microbiology ; Virulence/genetics
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  • 12
    Publication Date: 1997-07-11
    Description: BOB.1/OBF.1 is a transcriptional coactivator that is constitutively expressed in B cells and interacts with the Oct1 and Oct2 transcription factors. Upon activation of Jurkat T cells and primary murine thymocytes with phorbol esters and ionomycin, BOB.1/OBF.1 expression and transactivation function were induced. BOB.1/OBF.1 was phosphorylated at Ser184 both in vivo and in vitro, and this modification was required for inducible activation. Mutation of Ser184 also diminished transactivation function in B cells, suggesting that the activating phosphorylation that is inducible in T cells is constitutively present in B cells. Thus, BOB.1/OBF.1 is a transcriptional coactivator that is critically regulated by posttranslational modifications to mediate cell type-specific gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zwilling, S -- Dieckmann, A -- Pfisterer, P -- Angel, P -- Wirth, T -- New York, N.Y. -- Science. 1997 Jul 11;277(5323):221-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MSZ, Institut fur Medizinische Strahlenkunde und Zellforschung, Universitat Wurzburg, Versbacher Strasse 5, 97078 Wurzburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9211847" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Lymphocytes/metabolism ; Cells, Cultured ; *DNA-Binding Proteins ; *Gene Expression Regulation ; HeLa Cells ; Homeodomain Proteins/metabolism ; Host Cell Factor C1 ; Humans ; Immunosuppressive Agents/pharmacology ; Ionomycin/pharmacology ; Jurkat Cells ; *Lymphocyte Activation ; Mice ; Molecular Sequence Data ; Octamer Transcription Factor-1 ; Phosphorylation ; Phosphoserine/metabolism ; Recombinant Fusion Proteins/metabolism ; T-Lymphocytes/immunology/*metabolism ; Tetradecanoylphorbol Acetate/pharmacology ; Trans-Activators/genetics/*metabolism ; Transcription Factors/metabolism ; *Transcriptional Activation
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  • 13
    Publication Date: 1997-10-10
    Description: The clonal selection theory states that B lymphocytes producing high-affinity immunoglobulins are selected from a pool of cells undergoing antibody gene mutation. Somatic hypermutation is a well-documented mechanism for achieving diversification of immune responses in mature B cells. Antibody genes were also found to be modified in such cells in germinal centers by recombination of the variable (V), diversity (D), and joining (J) segments. The ability to alter immunoglobulin expression by V(D)J recombination in the selective environment of the germinal center may be an additional mechanism for inactivation or diversification of immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Papavasiliou, F -- Casellas, R -- Suh, H -- Qin, X F -- Besmer, E -- Pelanda, R -- Nemazee, D -- Rajewsky, K -- Nussenzweig, M C -- AI33890/AI/NIAID NIH HHS/ -- R01 AI033608/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1997 Oct 10;278(5336):298-301.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunology, Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9323210" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibody Diversity ; B-Lymphocytes/*immunology ; Cells, Cultured ; DNA Nucleotidyltransferases/genetics/metabolism ; DNA-Binding Proteins/genetics ; Gene Expression ; *Gene Rearrangement, B-Lymphocyte ; Genes, Immunoglobulin ; Genes, RAG-1 ; Germinal Center/cytology/immunology ; Immunoglobulin Joining Region/*genetics ; Immunoglobulin M/biosynthesis/genetics ; Immunoglobulin Variable Region/*genetics ; Lymphocyte Activation ; Mice ; *Recombination, Genetic ; VDJ Recombinases
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  • 14
    Publication Date: 1997-03-28
    Description: Signal transmission by many cell surface receptors results in the activation of phosphoinositide (PI) 3-kinases that phosphorylate the 3' position of polyphosphoinositides. From a screen for mouse proteins that bind phosphoinositides, the protein GRP1was identified. GRP1 binds phosphatidylinositol-3,4,5-trisphosphate [PtdIns(3,4, 5)P3] through a pleckstrin homology (PH) domain and displays a region of high sequence similarity to the yeast Sec7 protein. The PH domain of the closely related protein cytohesin-1, which, through its Sec7 homology domain, regulates integrin beta2 and catalyzes guanine nucleotide exchange of the small guanine nucleotide-binding protein ARF1, was also found to specifically bind PtdIns(3,4,5)P3. GRP1 and cytohesin-1 appear to connect receptor-activated PI 3-kinase signaling pathways with proteins that mediate biological responses such as cell adhesion and membrane trafficking.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klarlund, J K -- Guilherme, A -- Holik, J J -- Virbasius, J V -- Chawla, A -- Czech, M P -- DK30648/DK/NIDDK NIH HHS/ -- DK30898/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1997 Mar 28;275(5308):1927-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Molecular Medicine and Department of Biochemistry and Molecular Biology, University of Massachusetts Medical Center, 373 Plantation Street, Worcester, MA 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9072969" target="_blank"〉PubMed〈/a〉
    Keywords: ADP-Ribosylation Factor 1 ; ADP-Ribosylation Factors ; Adipocytes/chemistry ; Amino Acid Sequence ; Animals ; Antigens, CD18/metabolism ; Blood Proteins/*chemistry ; Brain Chemistry ; Cell Adhesion Molecules/chemistry/*metabolism ; Cell Membrane/metabolism ; Cells, Cultured ; Cloning, Molecular ; DNA, Complementary ; Fungal Proteins/*chemistry ; GTP-Binding Proteins/metabolism ; *Guanine Nucleotide Exchange Factors ; Humans ; Mice ; Molecular Sequence Data ; Phosphatidylinositol 3-Kinases ; Phosphatidylinositol Phosphates/*metabolism ; *Phosphoproteins ; Phosphorylation ; Phosphotransferases (Alcohol Group Acceptor)/*metabolism ; Receptors, Cytoplasmic and Nuclear/metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Sequence Homology, Amino Acid ; *Signal Transduction
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  • 15
    Publication Date: 1997-08-08
    Description: TRAIL (also called Apo2L) belongs to the tumor necrosis factor family, activates rapid apoptosis in tumor cells, and binds to the death-signaling receptor DR4. Two additional TRAIL receptors were identified. The receptor designated death receptor 5 (DR5) contained a cytoplasmic death domain and induced apoptosis much like DR4. The receptor designated decoy receptor 1 (DcR1) displayed properties of a glycophospholipid-anchored cell surface protein. DcR1 acted as a decoy receptor that inhibited TRAIL signaling. Thus, a cell surface mechanism exists for the regulation of cellular responsiveness to pro-apoptotic stimuli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sheridan, J P -- Marsters, S A -- Pitti, R M -- Gurney, A -- Skubatch, M -- Baldwin, D -- Ramakrishnan, L -- Gray, C L -- Baker, K -- Wood, W I -- Goddard, A D -- Godowski, P -- Ashkenazi, A -- New York, N.Y. -- Science. 1997 Aug 8;277(5327):818-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Oncology, Genentech, South San Francisco, CA 94080-4918, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9242611" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Apoptosis ; Apoptosis Regulatory Proteins ; Cell Membrane/metabolism ; Cells, Cultured ; GPI-Linked Proteins ; Glycosylphosphatidylinositols/metabolism ; HeLa Cells ; Humans ; Ligands ; Membrane Glycoproteins/*metabolism ; Molecular Sequence Data ; NF-kappa B/metabolism ; Receptors, TNF-Related Apoptosis-Inducing Ligand ; Receptors, Tumor Necrosis Factor/chemistry/genetics/*metabolism ; Signal Transduction ; TNF-Related Apoptosis-Inducing Ligand ; Transfection ; Tumor Cells, Cultured ; Tumor Necrosis Factor Decoy Receptors ; Tumor Necrosis Factor-alpha/*metabolism
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  • 16
    Publication Date: 1997-01-31
    Description: The N-methyl-D-aspartate (NMDA) receptor mediates synaptic transmission and plasticity in the central nervous system (CNS) and is regulated by tyrosine phosphorylation. In membrane patches excised from mammalian central neurons, the endogenous tyrosine kinase Src was shown to regulate the activity of NMDA channels. The action of Src required a sequence [Src(40-58)] within the noncatalytic, unique domain of Src. In addition, Src coprecipitated with NMDA receptor proteins. Finally, endogenous Src regulated the function of NMDA receptors at synapses. Thus, NMDA receptor regulation by Src may be important in development, plasticity, and pathology in the CNS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yu, X M -- Askalan, R -- Keil, G J 2nd -- Salter, M W -- New York, N.Y. -- Science. 1997 Jan 31;275(5300):674-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neuroscience, Hospital for Sick Children, Department of Physiology, University of Toronto, Toronto, Ontario, M5G 1X8 Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9005855" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cells, Cultured ; Ion Channel Gating ; Ion Channels/*metabolism ; Molecular Sequence Data ; N-Methylaspartate/metabolism ; Neurons/*metabolism ; Oligopeptides/pharmacology ; Patch-Clamp Techniques ; Phosphorylation ; Phosphotyrosine/metabolism ; Rats ; Rats, Wistar ; Receptors, N-Methyl-D-Aspartate/*metabolism ; Spinal Cord/cytology ; Synapses/*metabolism ; Synaptic Transmission ; src-Family Kinases/chemistry/*metabolism
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  • 17
    Publication Date: 1997-02-14
    Description: Posttetanic potentiation (PTP) is a common form of short-term synaptic plasticity that is generally thought to be entirely presynaptic. Consistent with that idea, PTP of evoked excitatory postsynaptic potentials at Aplysia sensory-motor neuron synapses in cell culture was reduced by presynaptic injection of a slow calcium chelator and was accompanied by an increase in the frequency but not the amplitude of spontaneous excitatory postsynaptic potentials. However, PTP was also reduced by postsynaptic injection of a rapid calcium chelator or postsynaptic hyperpolarization. Thus, PTP at these synapses is likely to involve a postsynaptic induction mechanism in addition to the known presynaptic mechanisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bao, J X -- Kandel, E R -- Hawkins, R D -- MH 26212/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1997 Feb 14;275(5302):969-73.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neurobiology and Behavior, College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9020078" target="_blank"〉PubMed〈/a〉
    Keywords: 1-Octanol ; Action Potentials ; Animals ; Aplysia ; Calcium/physiology ; Cells, Cultured ; Chelating Agents/pharmacology ; Egtazic Acid/analogs & derivatives/pharmacology ; Long-Term Potentiation ; Motor Neurons/*physiology ; *Neuronal Plasticity ; Neurons, Afferent/*physiology ; Octanols/pharmacology ; Serotonin/pharmacology ; Synapses/*physiology ; *Synaptic Transmission
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  • 18
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-09-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sauvageau, Guy -- Humphries, R Keith -- New York, N.Y. -- Science. 2010 Sep 10;329(5997):1291-2. doi: 10.1126/science.1195173.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer, University of Montreal, Montreal, QC H3C 3J7, Canada. guy.sauvageau@umontreal.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20829472" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD34/analysis ; Cell Lineage ; Cell Proliferation ; Cells, Cultured ; Fetal Blood/cytology ; *Hematopoiesis ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/*cytology/*drug effects/physiology ; Humans ; Mice ; Purines/chemistry/metabolism/*pharmacology ; Receptors, Aryl Hydrocarbon/*antagonists & inhibitors/metabolism ; Small Molecule Libraries ; Species Specificity
    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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  • 19
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-08-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhatia, Mickie -- New York, N.Y. -- Science. 2010 Aug 27;329(5995):1024-5. doi: 10.1126/science.1194919.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stem Cell and Cancer Research Institute, McMaster University, Hamilton, Ontario L8N 3Z5, Canada. mbhatia@mcmaster.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20798306" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Culture Techniques/*methods ; Cell Differentiation ; Cell Division ; Cells, Cultured ; Elasticity ; Humans ; Hydrogels ; Mice ; Muscle Fibers, Skeletal/*cytology/physiology ; Myoblasts, Skeletal/cytology/physiology ; Regeneration ; Stem Cell Niche/*physiology ; Stem Cell Transplantation ; Stem Cells/*physiology
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  • 20
    Publication Date: 2010-07-22
    Description: Astrocytes provide structural and metabolic support for neuronal networks, but direct evidence demonstrating their active role in complex behaviors is limited. Central respiratory chemosensitivity is an essential mechanism that, via regulation of breathing, maintains constant levels of blood and brain pH and partial pressure of CO2. We found that astrocytes of the brainstem chemoreceptor areas are highly chemosensitive. They responded to physiological decreases in pH with vigorous elevations in intracellular Ca2+ and release of adenosine triphosphate (ATP). ATP propagated astrocytic Ca2+ excitation, activated chemoreceptor neurons, and induced adaptive increases in breathing. Mimicking pH-evoked Ca2+ responses by means of optogenetic stimulation of astrocytes expressing channelrhodopsin-2 activated chemoreceptor neurons via an ATP-dependent mechanism and triggered robust respiratory responses in vivo. This demonstrates a potentially crucial role for brain glial cells in mediating a fundamental physiological reflex.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3160742/" 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/PMC3160742/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gourine, Alexander V -- Kasymov, Vitaliy -- Marina, Nephtali -- Tang, Feige -- Figueiredo, Melina F -- Lane, Samantha -- Teschemacher, Anja G -- Spyer, K Michael -- Deisseroth, Karl -- Kasparov, Sergey -- 079040/Wellcome Trust/United Kingdom -- PG/09/064/27886/British Heart Foundation/United Kingdom -- British Heart Foundation/United Kingdom -- New York, N.Y. -- Science. 2010 Jul 30;329(5991):571-5. doi: 10.1126/science.1190721. Epub 2010 Jul 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Neuroscience, Physiology, and Pharmacology, University College London, London WC1E 6BT, UK. a.gourine@ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20647426" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/*metabolism ; Animals ; Astrocytes/*physiology ; Brain Stem/cytology/*physiology ; Calcium/metabolism ; Carbon Dioxide/analysis/blood ; Cells, Cultured ; Chemoreceptor Cells/*physiology ; Exocytosis ; Gap Junctions/metabolism ; Hydrogen-Ion Concentration ; In Vitro Techniques ; Light ; Medulla Oblongata/cytology/*physiology ; Membrane Potentials ; Rats ; Rats, Sprague-Dawley ; Receptors, Purinergic P2/metabolism ; *Respiration ; Rhodopsin/genetics/metabolism
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  • 21
    Publication Date: 2010-01-30
    Description: In addition to their pivotal role in thrombosis and wound repair, platelets participate in inflammatory responses. We investigated the role of platelets in the autoimmune disease rheumatoid arthritis. We identified platelet microparticles--submicrometer vesicles elaborated by activated platelets--in joint fluid from patients with rheumatoid arthritis and other forms of inflammatory arthritis, but not in joint fluid from patients with osteoarthritis. Platelet microparticles were proinflammatory, eliciting cytokine responses from synovial fibroblasts via interleukin-1. Consistent with these findings, depletion of platelets attenuated murine inflammatory arthritis. Using both pharmacologic and genetic approaches, we identified the collagen receptor glycoprotein VI as a key trigger for platelet microparticle generation in arthritis pathophysiology. Thus, these findings demonstrate a previously unappreciated role for platelets and their activation-induced microparticles in inflammatory joint diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2927861/" 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/PMC2927861/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boilard, Eric -- Nigrovic, Peter A -- Larabee, Katherine -- Watts, Gerald F M -- Coblyn, Jonathan S -- Weinblatt, Michael E -- Massarotti, Elena M -- Remold-O'Donnell, Eileen -- Farndale, Richard W -- Ware, Jerry -- Lee, David M -- G0500707/Medical Research Council/United Kingdom -- HL091269/HL/NHLBI NIH HHS/ -- HL50545/HL/NHLBI NIH HHS/ -- K08AR051321/AR/NIAMS NIH HHS/ -- P01 AI065858/AI/NIAID NIH HHS/ -- R01 HL050545/HL/NHLBI NIH HHS/ -- R01 HL050545-16/HL/NHLBI NIH HHS/ -- R01 HL050545-18/HL/NHLBI NIH HHS/ -- R21 HL091269/HL/NHLBI NIH HHS/ -- R21 HL091269-01A2/HL/NHLBI NIH HHS/ -- RG/09/003/27122/British Heart Foundation/United Kingdom -- British Heart Foundation/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2010 Jan 29;327(5965):580-3. doi: 10.1126/science.1181928.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Rheumatology, Immunology and Allergy, Brigham and Women'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/20110505" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arthritis/blood/immunology ; Arthritis, Rheumatoid/*blood/*immunology/physiopathology ; Blood Platelets/cytology/*physiology/ultrastructure ; Cell-Derived Microparticles/metabolism/*physiology ; Cells, Cultured ; Collagen/*metabolism ; Cytokines/*metabolism ; Extracellular Matrix/metabolism ; Fibroblasts/immunology/metabolism ; Humans ; Interleukin-1/metabolism ; Mice ; Mice, Transgenic ; Platelet Activation ; Platelet Membrane Glycoproteins/metabolism ; Receptors, Collagen/metabolism ; Synovial Fluid/cytology/*immunology ; Synovial Membrane/cytology/immunology
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  • 22
    Publication Date: 2010-07-22
    Description: Stem cells that naturally reside in adult tissues, such as muscle stem cells (MuSCs), exhibit robust regenerative capacity in vivo that is rapidly lost in culture. Using a bioengineered substrate to recapitulate key biophysical and biochemical niche features in conjunction with a highly automated single-cell tracking algorithm, we show that substrate elasticity is a potent regulator of MuSC fate in culture. Unlike MuSCs on rigid plastic dishes (approximately 10(6) kilopascals), MuSCs cultured on soft hydrogel substrates that mimic the elasticity of muscle (12 kilopascals) self-renew in vitro and contribute extensively to muscle regeneration when subsequently transplanted into mice and assayed histologically and quantitatively by noninvasive bioluminescence imaging. Our studies provide novel evidence that by recapitulating physiological tissue rigidity, propagation of adult muscle stem cells is possible, enabling future cell-based therapies for muscle-wasting diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2929271/" 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/PMC2929271/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gilbert, P M -- Havenstrite, K L -- Magnusson, K E G -- Sacco, A -- Leonardi, N A -- Kraft, P -- Nguyen, N K -- Thrun, S -- Lutolf, M P -- Blau, H M -- 2 T32 HD007249/HD/NICHD NIH HHS/ -- 52005886/Howard Hughes Medical Institute/ -- AG009521/AG/NIA NIH HHS/ -- AG020961/AG/NIA NIH HHS/ -- CA09151/CA/NCI NIH HHS/ -- HL096113/HL/NHLBI NIH HHS/ -- R01 AG009521/AG/NIA NIH HHS/ -- R01 AG009521-25/AG/NIA NIH HHS/ -- R01 AG020961/AG/NIA NIH HHS/ -- R01 AG020961-06A2/AG/NIA NIH HHS/ -- R01 AG020961-07/AG/NIA NIH HHS/ -- R01 HL096113/HL/NHLBI NIH HHS/ -- R01 HL096113-03/HL/NHLBI NIH HHS/ -- T32 CA009151/CA/NCI NIH HHS/ -- T32 CA009151-35/CA/NCI NIH HHS/ -- T32 HD007249/HD/NICHD NIH HHS/ -- T32 HD007249-25/HD/NICHD NIH HHS/ -- U01 HL100397/HL/NHLBI NIH HHS/ -- U01 HL100397-01/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2010 Aug 27;329(5995):1078-81. doi: 10.1126/science.1191035. Epub 2010 Jul 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Baxter Laboratory for Stem Cell Biology, Department of Microbiology and Immunology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20647425" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; Cell Count ; Cell Culture Techniques/*methods ; Cell Death ; Cell Differentiation ; Cell Division ; Cell Lineage ; Cell Separation ; Cell Survival ; Cells, Cultured ; Elastic Modulus ; Hydrogels ; Mice ; Mice, Inbred C57BL ; Mice, Inbred NOD ; Mice, SCID ; Mice, Transgenic ; Muscle Fibers, Skeletal/*cytology/physiology ; Muscle, Skeletal/*cytology ; Polyethylene Glycols ; Regeneration ; Satellite Cells, Skeletal Muscle/cytology ; Stem Cell Niche/*physiology ; Stem Cell Transplantation ; Stem Cells/cytology/*physiology
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  • 23
    Publication Date: 2010-03-27
    Description: Shelterin is an essential telomeric protein complex that prevents DNA damage signaling and DNA repair at mammalian chromosome ends. Here we report on the role of the TRF2-interacting factor Rap1, a conserved shelterin subunit of unknown function. We removed Rap1 from mouse telomeres either through gene deletion or by replacing TRF2 with a mutant that does not bind Rap1. Rap1 was dispensable for the essential functions of TRF2--repression of ATM kinase signaling and nonhomologous end joining (NHEJ)--and mice lacking telomeric Rap1 were viable and fertile. However, Rap1 was critical for the repression of homology-directed repair (HDR), which can alter telomere length. The data reveal that HDR at telomeres can take place in the absence of DNA damage foci and underscore the functional compartmentalization within shelterin.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2864730/" 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/PMC2864730/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sfeir, Agnel -- Kabir, Shaheen -- van Overbeek, Megan -- Celli, Giulia B -- de Lange, Titia -- AG016642/AG/NIA NIH HHS/ -- GM049046/GM/NIGMS NIH HHS/ -- R01 AG016642/AG/NIA NIH HHS/ -- R01 AG016642-01/AG/NIA NIH HHS/ -- R01 AG016642-02/AG/NIA NIH HHS/ -- R01 AG016642-03/AG/NIA NIH HHS/ -- R01 AG016642-04/AG/NIA NIH HHS/ -- R01 AG016642-05/AG/NIA NIH HHS/ -- R01 AG016642-06/AG/NIA NIH HHS/ -- R01 AG016642-07/AG/NIA NIH HHS/ -- R01 AG016642-08/AG/NIA NIH HHS/ -- R01 AG016642-09/AG/NIA NIH HHS/ -- R01 AG016642-10/AG/NIA NIH HHS/ -- R01 AG016642-11/AG/NIA NIH HHS/ -- R01 GM049046/GM/NIGMS NIH HHS/ -- R01 GM049046-07/GM/NIGMS NIH HHS/ -- R01 GM049046-08/GM/NIGMS NIH HHS/ -- R01 GM049046-09/GM/NIGMS NIH HHS/ -- R01 GM049046-10/GM/NIGMS NIH HHS/ -- R01 GM049046-11/GM/NIGMS NIH HHS/ -- R01 GM049046-12/GM/NIGMS NIH HHS/ -- R37 GM049046/GM/NIGMS NIH HHS/ -- R37 GM049046-13/GM/NIGMS NIH HHS/ -- R37 GM049046-14/GM/NIGMS NIH HHS/ -- R37 GM049046-15/GM/NIGMS NIH HHS/ -- R37 GM049046-16/GM/NIGMS NIH HHS/ -- R37 GM049046-17/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Mar 26;327(5973):1657-61. doi: 10.1126/science.1185100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20339076" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Ataxia Telangiectasia Mutated Proteins ; Cell Cycle Proteins/metabolism ; Cell Proliferation ; Cells, Cultured ; Checkpoint Kinase 2 ; *DNA Damage ; *DNA Repair ; DNA-Binding Proteins/metabolism ; Gene Deletion ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Molecular Sequence Data ; Protein-Serine-Threonine Kinases/metabolism ; Recombination, Genetic ; Signal Transduction ; Sister Chromatid Exchange ; Telomere/*genetics/metabolism ; Telomere-Binding Proteins/chemistry/*genetics/*metabolism ; Telomeric Repeat Binding Protein 2/genetics/metabolism ; Tumor Suppressor Proteins/metabolism
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  • 24
    Publication Date: 2010-08-28
    Description: Presynaptic nerve terminals release neurotransmitters repeatedly, often at high frequency, and in relative isolation from neuronal cell bodies. Repeated release requires cycles of soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE)-complex assembly and disassembly, with continuous generation of reactive SNARE-protein intermediates. Although many forms of neurodegeneration initiate presynaptically, only few pathogenic mechanisms are known, and the functions of presynaptic proteins linked to neurodegeneration, such as alpha-synuclein, remain unclear. Here, we show that maintenance of continuous presynaptic SNARE-complex assembly required a nonclassical chaperone activity mediated by synucleins. Specifically, alpha-synuclein directly bound to the SNARE-protein synaptobrevin-2/vesicle-associated membrane protein 2 (VAMP2) and promoted SNARE-complex assembly. Moreover, triple-knockout mice lacking synucleins developed age-dependent neurological impairments, exhibited decreased SNARE-complex assembly, and died prematurely. Thus, synucleins may function to sustain normal SNARE-complex assembly in a presynaptic terminal during aging.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3235365/" 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/PMC3235365/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burre, Jacqueline -- Sharma, Manu -- Tsetsenis, Theodoros -- Buchman, Vladimir -- Etherton, Mark R -- Sudhof, Thomas C -- 075615/Wellcome Trust/United Kingdom -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Sep 24;329(5999):1663-7. doi: 10.1126/science.1195227. Epub 2010 Aug 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Physiology, and Howard Hughes Medical Institute, Stanford University, 1050 Arastradero Road, Palo Alto, CA 94304-5543, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20798282" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Cell Line ; Cells, Cultured ; HSP40 Heat-Shock Proteins/metabolism ; Humans ; Membrane Fusion ; Membrane Proteins/metabolism ; Mice ; Mice, Knockout ; Mice, Transgenic ; Nerve Degeneration/*metabolism ; Neurons/*metabolism ; Presynaptic Terminals/*metabolism ; Protein Binding ; Rats ; Recombinant Fusion Proteins/metabolism ; SNARE Proteins/*metabolism ; Vesicle-Associated Membrane Protein 2/metabolism ; alpha-Synuclein/chemistry/genetics/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 25
    Publication Date: 2010-02-27
    Description: A20 negatively regulates inflammation by inhibiting the nuclear factor kappaB (NF-kappaB) transcription factor in the tumor necrosis factor-receptor (TNFR) and Toll-like receptor (TLR) pathways. A20 contains deubiquitinase and E3 ligase domains and thus has been proposed to function as a ubiquitin-editing enzyme downstream of TNFR1 by inactivating ubiquitinated RIP1. However, it remains unclear how A20 terminates NF-kappaB signaling downstream of TLRs. We have shown that A20 inhibited the E3 ligase activities of TRAF6, TRAF2, and cIAP1 by antagonizing interactions with the E2 ubiquitin conjugating enzymes Ubc13 and UbcH5c. A20, together with the regulatory molecule TAX1BP1, interacted with Ubc13 and UbcH5c and triggered their ubiquitination and proteasome-dependent degradation. These findings suggest mechanism of A20 action in the inhibition of inflammatory signaling pathways.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3025292/" 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/PMC3025292/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shembade, Noula -- Ma, Averil -- Harhaj, Edward W -- R01 CA135362/CA/NCI NIH HHS/ -- R01 CA135362-04/CA/NCI NIH HHS/ -- R01 DK071939/DK/NIDDK NIH HHS/ -- R01 DK071939-07/DK/NIDDK NIH HHS/ -- R01 GM083143/GM/NIGMS NIH HHS/ -- R01 GM083143-03/GM/NIGMS NIH HHS/ -- R01CA135362/CA/NCI NIH HHS/ -- R01GM083143/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Feb 26;327(5969):1135-9. doi: 10.1126/science.1182364.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Sylvester Comprehensive Cancer Center, The University of Miami, Miller School of Medicine, Miami, FL 33136, USA. nshembade@med.miami.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20185725" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Animals ; Cells, Cultured ; Cysteine Endopeptidases/chemistry/genetics/*metabolism ; Gene Products, tax/metabolism ; Inflammation/*metabolism ; Inhibitor of Apoptosis Proteins/antagonists & inhibitors/metabolism ; Interleukin-1/immunology/metabolism ; Intracellular Signaling Peptides and Proteins/chemistry/genetics/*metabolism ; Mice ; NF-kappa B/*metabolism ; Neoplasm Proteins/metabolism ; Proteasome Endopeptidase Complex/metabolism ; Protein Binding ; Receptor-Interacting Protein Serine-Threonine Kinases/metabolism ; Receptors, Tumor Necrosis Factor, Type I/metabolism ; *Signal Transduction ; TNF Receptor-Associated Factor 2/antagonists & inhibitors/metabolism ; TNF Receptor-Associated Factor 6/antagonists & inhibitors/metabolism ; Tumor Necrosis Factor-alpha/immunology/metabolism ; Ubiquitin-Conjugating Enzymes/*metabolism ; Ubiquitin-Protein Ligases/*antagonists & inhibitors/metabolism ; Ubiquitinated Proteins/metabolism ; Ubiquitination ; Zinc Fingers
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  • 26
    Publication Date: 2010-05-08
    Description: Clathrin-mediated endocytosis, the major pathway for ligand internalization into eukaryotic cells, is thought to be initiated by the clustering of clathrin and adaptors around receptors destined for internalization. However, here we report that the membrane-sculpting F-BAR domain-containing Fer/Cip4 homology domain-only proteins 1 and 2 (FCHo1/2) were required for plasma membrane clathrin-coated vesicle (CCV) budding and marked sites of CCV formation. Changes in FCHo1/2 expression levels correlated directly with numbers of CCV budding events, ligand endocytosis, and synaptic vesicle marker recycling. FCHo1/2 proteins bound specifically to the plasma membrane and recruited the scaffold proteins eps15 and intersectin, which in turn engaged the adaptor complex AP2. The FCHo F-BAR membrane-bending activity was required, leading to the proposal that FCHo1/2 sculpt the initial bud site and recruit the clathrin machinery for CCV formation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2883440/" 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/PMC2883440/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Henne, William Mike -- Boucrot, Emmanuel -- Meinecke, Michael -- Evergren, Emma -- Vallis, Yvonne -- Mittal, Rohit -- McMahon, Harvey T -- MC_U105178795/Medical Research Council/United Kingdom -- U.1051.02.007(78795)/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2010 Jun 4;328(5983):1281-4. doi: 10.1126/science.1188462. Epub 2010 May 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council, Laboratory of Molecular Biology (MRC-LMB), Hills Road, Cambridge CB2 0QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20448150" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Protein Complex 2/metabolism ; Adaptor Proteins, Signal Transducing ; Adaptor Proteins, Vesicular Transport/metabolism ; Animals ; Calcium-Binding Proteins/metabolism ; Cell Line ; Cell Membrane/metabolism ; Cells, Cultured ; Clathrin/*metabolism ; Clathrin-Coated Vesicles/*metabolism ; *Endocytosis ; HeLa Cells ; Humans ; Intracellular Signaling Peptides and Proteins/metabolism ; Membrane Proteins ; Mice ; Models, Molecular ; Neurons/cytology/metabolism ; Phosphoproteins/metabolism ; Protein Multimerization ; Protein Structure, Tertiary ; Proteins/chemistry/*metabolism ; RNA Interference ; Rats ; Rats, Sprague-Dawley ; Recombinant Fusion Proteins/metabolism ; Synaptic Vesicles/metabolism
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  • 27
    Publication Date: 2010-09-04
    Description: Leukotriene A(4) hydrolase (LTA(4)H) is a proinflammatory enzyme that generates the inflammatory mediator leukotriene B(4) (LTB(4)). LTA(4)H also possesses aminopeptidase activity with unknown substrate and physiological importance; we identified the neutrophil chemoattractant proline-glycine-proline (PGP) as this physiological substrate. PGP is a biomarker for chronic obstructive pulmonary disease (COPD) and is implicated in neutrophil persistence in the lung. In acute neutrophil-driven inflammation, PGP was degraded by LTA(4)H, which facilitated the resolution of inflammation. In contrast, cigarette smoke, a major risk factor for the development of COPD, selectively inhibited LTA(4)H aminopeptidase activity, which led to the accumulation of PGP and neutrophils. These studies imply that therapeutic strategies inhibiting LTA(4)H to prevent LTB(4) generation may not reduce neutrophil recruitment because of elevated levels of PGP.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3072752/" 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/PMC3072752/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Snelgrove, Robert J -- Jackson, Patricia L -- Hardison, Matthew T -- Noerager, Brett D -- Kinloch, Andrew -- Gaggar, Amit -- Shastry, Suresh -- Rowe, Steven M -- Shim, Yun M -- Hussell, Tracy -- Blalock, J Edwin -- 082727/Z/07/Z/Wellcome Trust/United Kingdom -- 1K23DK075788/DK/NIDDK NIH HHS/ -- 1R03DK084110-01/DK/NIDDK NIH HHS/ -- G0400795/Medical Research Council/United Kingdom -- G0802752/Medical Research Council/United Kingdom -- HL07783/HL/NHLBI NIH HHS/ -- HL087824/HL/NHLBI NIH HHS/ -- HL090999/HL/NHLBI NIH HHS/ -- HL102371-A1/HL/NHLBI NIH HHS/ -- K08HL091127/HL/NHLBI NIH HHS/ -- P171/03/C1/048/Medical Research Council/United Kingdom -- P30 DK079337/DK/NIDDK NIH HHS/ -- P30AR050948/AR/NIAMS NIH HHS/ -- P30CA13148/CA/NCI NIH HHS/ -- P50 AT00477/AT/NCCIH NIH HHS/ -- R01 HL077783/HL/NHLBI NIH HHS/ -- R01 HL077783-05/HL/NHLBI NIH HHS/ -- R01 HL087824/HL/NHLBI NIH HHS/ -- R01 HL087824-02/HL/NHLBI NIH HHS/ -- R01 HL090999/HL/NHLBI NIH HHS/ -- R01 HL090999-02S1/HL/NHLBI NIH HHS/ -- R01 HL090999-04/HL/NHLBI NIH HHS/ -- R01 HL102371/HL/NHLBI NIH HHS/ -- RR19231/RR/NCRR NIH HHS/ -- U54CA100949/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2010 Oct 1;330(6000):90-4. doi: 10.1126/science.1190594. Epub 2010 Sep 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham Lung Health Center, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA. rjs198@imperial.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20813919" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Animals ; Bronchoalveolar Lavage Fluid/chemistry ; Cells, Cultured ; Chemokines, CXC/metabolism ; Chemotaxis, Leukocyte ; Epoxide Hydrolases/antagonists & inhibitors/isolation & purification/*metabolism ; Female ; Humans ; Inflammation ; Leukotriene B4/metabolism ; Lung/*immunology/metabolism/pathology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Neutrophils/enzymology/immunology/*physiology ; Oligopeptides/*metabolism ; Orthomyxoviridae Infections/immunology/metabolism/pathology ; Pneumococcal Infections/immunology/metabolism/pathology ; Pneumonia/*immunology/metabolism/pathology/therapy ; Proline/*analogs & derivatives/metabolism ; Pulmonary Disease, Chronic Obstructive/immunology/metabolism/pathology ; *Smoke ; Tobacco
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  • 28
    Publication Date: 2010-07-22
    Description: The mammalian adenosine monophosphate-activated protein kinase (AMPK) is a serine-threonine kinase protein complex that is a central regulator of cellular energy homeostasis. However, the mechanisms by which AMPK mediates cellular responses to metabolic stress remain unclear. We found that AMPK activates transcription through direct association with chromatin and phosphorylation of histone H2B at serine 36. AMPK recruitment and H2B Ser36 phosphorylation colocalized within genes activated by AMPK-dependent pathways, both in promoters and in transcribed regions. Ectopic expression of H2B in which Ser36 was substituted by alanine reduced transcription and RNA polymerase II association to AMPK-dependent genes, and lowered cell survival in response to stress. Our results place AMPK-dependent H2B Ser36 phosphorylation in a direct transcriptional and chromatin regulatory pathway leading to cellular adaptation to stress.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3922052/" 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/PMC3922052/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bungard, David -- Fuerth, Benjamin J -- Zeng, Ping-Yao -- Faubert, Brandon -- Maas, Nancy L -- Viollet, Benoit -- Carling, David -- Thompson, Craig B -- Jones, Russell G -- Berger, Shelley L -- CA078831/CA/NCI NIH HHS/ -- CA09171/CA/NCI NIH HHS/ -- CA105463/CA/NCI NIH HHS/ -- MC_U120027537/Medical Research Council/United Kingdom -- MOP-93799/Canadian Institutes of Health Research/Canada -- P01 AG031862/AG/NIA NIH HHS/ -- P01 CA104838/CA/NCI NIH HHS/ -- R01 CA078831/CA/NCI NIH HHS/ -- R01 CA105463/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2010 Sep 3;329(5996):1201-5. doi: 10.1126/science.1191241. Epub 2010 Jul 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Developmental Biology, University of Pennsylvania Medical School, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20647423" target="_blank"〉PubMed〈/a〉
    Keywords: AMP-Activated Protein Kinases/chemistry/*metabolism ; Adaptation, Physiological ; Amino Acid Motifs ; Amino Acid Substitution ; Animals ; Cell Line ; Cell Line, Tumor ; Cell Survival ; Cells, Cultured ; Chromatin/*metabolism ; Chromatin Immunoprecipitation ; Enzyme Activation ; Gene Expression Regulation ; Histones/chemistry/*metabolism ; Humans ; Mice ; Phosphorylation ; Promoter Regions, Genetic ; Protein-Serine-Threonine Kinases/genetics/metabolism ; Serine/metabolism ; Signal Transduction ; *Stress, Physiological ; *Transcription, Genetic ; Tumor Suppressor Protein p53/metabolism
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  • 29
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-08-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Singh, Harinder -- Demarco, Ignacio A -- New York, N.Y. -- Science. 2010 Aug 20;329(5994):914-5. doi: 10.1126/science.1194316.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Discovery Immunology, Genentech, San Francisco, CA 94080, USA. singh.harinder@gene.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20724627" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Animals ; Antibody Specificity/*genetics ; B-Lymphocytes/*immunology ; Carrier Proteins/genetics/*physiology ; Cells, Cultured ; Chromatin/metabolism ; Cytidine Deaminase/*metabolism ; Dna ; DNA Breaks, Double-Stranded ; DNA Modification Methylases/metabolism ; Histone-Lysine N-Methyltransferase/genetics ; Histones/metabolism ; Immunoglobulin Class Switching/genetics/*physiology ; Immunoglobulin Switch Region ; Lymphocyte Activation ; Methylation ; Mice ; Mice, Knockout ; Nuclear Proteins/genetics/*physiology ; Promoter Regions, Genetic ; Recombination, Genetic ; Transcriptional Activation
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  • 30
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-07-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Di Santo, James P -- R01 AR060723/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Jul 2;329(5987):44-5. doi: 10.1126/science.1191664.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Innate Immunity Unit, Institut Pasteur, Paris F-75724, France. james.di-santo@pasteur.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20595605" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Lineage ; Cells, Cultured ; Cytokines/metabolism ; Gene Deletion ; Gene Expression Regulation ; Interleukin-7/physiology ; Killer Cells, Natural/cytology/immunology/*physiology ; *Lymphopoiesis/genetics ; Mice ; Models, Biological ; Precursor Cells, T-Lymphoid/cytology/physiology ; Repressor Proteins/*genetics/*metabolism ; Signal Transduction ; T-Lymphocytes/cytology/immunology/*physiology ; Tumor Suppressor Proteins/*genetics/*metabolism
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  • 31
    Publication Date: 2010-06-26
    Description: Here, we describe a biomimetic microsystem that reconstitutes the critical functional alveolar-capillary interface of the human lung. This bioinspired microdevice reproduces complex integrated organ-level responses to bacteria and inflammatory cytokines introduced into the alveolar space. In nanotoxicology studies, this lung mimic revealed that cyclic mechanical strain accentuates toxic and inflammatory responses of the lung to silica nanoparticles. Mechanical strain also enhances epithelial and endothelial uptake of nanoparticulates and stimulates their transport into the underlying microvascular channel. Similar effects of physiological breathing on nanoparticle absorption are observed in whole mouse lung. Mechanically active "organ-on-a-chip" microdevices that reconstitute tissue-tissue interfaces critical to organ function may therefore expand the capabilities of cell culture models and provide low-cost alternatives to animal and clinical studies for drug screening and toxicology applications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huh, Dongeun -- Matthews, Benjamin D -- Mammoto, Akiko -- Montoya-Zavala, Martin -- Hsin, Hong Yuan -- Ingber, Donald E -- R01-ES016665/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 2010 Jun 25;328(5986):1662-8. doi: 10.1126/science.1188302.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20576885" target="_blank"〉PubMed〈/a〉
    Keywords: Air ; Animals ; *Biomimetic Materials ; Blood-Air Barrier ; Capillaries/*physiology ; Capillary Permeability ; Cells, Cultured ; Endothelial Cells/*physiology ; Escherichia coli/immunology ; Humans ; Immunity, Innate ; Inflammation ; Lung/blood supply/physiology ; Mice ; *Microfluidic Analytical Techniques ; Microtechnology ; Nanoparticles/toxicity ; Neutrophil Infiltration ; Oxidative Stress ; Pneumocytes/*physiology ; Pulmonary Alveoli/*blood supply/cytology/immunology/*physiology ; Respiration ; Silicon Dioxide/toxicity ; Stress, Mechanical
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  • 32
    Publication Date: 2010-12-04
    Description: Although the proteins BAX and BAK are required for initiation of apoptosis at the mitochondria, how BAX and BAK are activated remains unsettled. We provide in vivo evidence demonstrating an essential role of the proteins BID, BIM, and PUMA in activating BAX and BAK. Bid, Bim, and Puma triple-knockout mice showed the same developmental defects that are associated with deficiency of Bax and Bak, including persistent interdigital webs and imperforate vaginas. Genetic deletion of Bid, Bim, and Puma prevented the homo-oligomerization of BAX and BAK, and thereby cytochrome c-mediated activation of caspases in response to diverse death signals in neurons and T lymphocytes, despite the presence of other BH3-only molecules. Thus, many forms of apoptosis require direct activation of BAX and BAK at the mitochondria by a member of the BID, BIM, or PUMA family of proteins.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3163443/" 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/PMC3163443/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ren, Decheng -- Tu, Ho-Chou -- Kim, Hyungjin -- Wang, Gary X -- Bean, Gregory R -- Takeuchi, Osamu -- Jeffers, John R -- Zambetti, Gerard P -- Hsieh, James J-D -- Cheng, Emily H-Y -- P30CA21765/CA/NCI NIH HHS/ -- R01 CA125562/CA/NCI NIH HHS/ -- R01 CA125562-02/CA/NCI NIH HHS/ -- R01 CA125562-03/CA/NCI NIH HHS/ -- R01 CA125562-04/CA/NCI NIH HHS/ -- R01CA125562/CA/NCI NIH HHS/ -- R01GM083159/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Dec 3;330(6009):1390-3. doi: 10.1126/science.1190217.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21127253" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Apoptosis Regulatory Proteins/deficiency/genetics/*metabolism ; BH3 Interacting Domain Death Agonist Protein/deficiency/genetics/*metabolism ; Caspases/metabolism ; Cells, Cultured ; Cerebellum/cytology ; Cytochromes c/metabolism ; Intracellular Membranes/metabolism ; Membrane Proteins/deficiency/genetics/*metabolism ; Mice ; Mice, Knockout ; Mitochondria/metabolism ; Models, Biological ; Neurons/*physiology ; Permeability ; Protein Multimerization ; Proto-Oncogene Proteins/deficiency/genetics/*metabolism ; Stress, Physiological ; T-Lymphocytes/physiology ; Tumor Suppressor Proteins/deficiency/genetics/*metabolism ; bcl-2 Homologous Antagonist-Killer Protein/chemistry/genetics/*metabolism ; bcl-2-Associated X Protein/chemistry/genetics/*metabolism
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  • 33
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ray-Gallet, Dominique -- Almouzni, Genevieve -- New York, N.Y. -- Science. 2010 Apr 2;328(5974):56-7. doi: 10.1126/science.1188653.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Nuclear Dynamics and Genome Plasticity, UMR218 CNRS/Institut 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/20360101" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Cycle ; Cells, Cultured ; Chromatin/*metabolism ; Chromatin Assembly and Disassembly ; DNA Replication ; Histones/*chemistry/*metabolism ; Humans ; Nucleosomes/*metabolism ; Protein Multimerization
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  • 34
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-01-10
    Description: In vivo, cytoplasmic microtubules are nucleated and anchored by their minus ends at the centrosome and are believed to turn over by a mechanism termed dynamic instability: depolymerization and repolymerization at their plus ends. In cytoplasmic fragments of fish melanophores, microtubules were shown to detach from their nucleation site and depolymerize from their minus ends. Free microtubules moved toward the periphery by treadmilling-growth at one end and shortening from the opposite end. Frequent release from nucleation sites may be a general property of centrosomes and permit a minus-end mechanism of microtubule turnover and treadmilling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rodionov, V I -- Borisy, G G -- GM25062/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Jan 10;275(5297):215-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, University of Wisconsin, Madison, WI 53706, USA. ggborisy@facstaf.wisc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8985015" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Membrane/metabolism ; Cells, Cultured ; Centrosome/metabolism ; Cytoplasm/metabolism/ultrastructure ; Fishes ; Kinetics ; Melanophores/ultrastructure ; Microtubules/metabolism/*physiology/ultrastructure ; Movement ; Pigments, Biological/metabolism ; Polymers
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  • 35
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-04-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kelner, K L -- New York, N.Y. -- Science. 1997 Apr 25;276(5312):547.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9148416" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Calcium-Binding Proteins ; Cells, Cultured ; Electric Stimulation ; Hippocampus ; Membrane Glycoproteins/metabolism ; Membrane Proteins/metabolism ; Nerve Tissue Proteins/metabolism ; Neurons/metabolism ; Neurotransmitter Agents/*metabolism ; R-SNARE Proteins ; Rats ; Recombinant Fusion Proteins/metabolism ; Synapses/*metabolism ; Synaptic Transmission ; Synaptotagmins
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  • 36
    Publication Date: 1997-01-31
    Description: The relation between an antigenic peptide that can stimulate a mature T cell and the natural peptide that promoted selection of this cell in the thymus is still unknown. An experimental system was devised to address this issue in vivo-mice expressing neopeptides in thymic stromal cells after adenovirus-mediated delivery of invariant chain-peptide fusion proteins. In this system, selection of T cells capable of responding to a given antigenic peptide could be promoted by the peptide itself, by closely related analogs lacking agonist and antagonist activity, or by ostensibly unrelated peptides. However, the precise repertoire of T cells selected was dictated by the particular neopeptide expressed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nakano, N -- Rooke, R -- Benoist, C -- Mathis, D -- New York, N.Y. -- Science. 1997 Jan 31;275(5300):678-83.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire (INSERM, CNRS, Universite Louis Pasteur), 1 rue Laurent Fries, 67404 Illkirch, C.U. de Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9005856" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviridae/genetics ; Amino Acid Sequence ; Animals ; Antigen-Presenting Cells/immunology ; Antigens, Differentiation, B-Lymphocyte/genetics ; Cells, Cultured ; Cloning, Molecular ; Cross Reactions ; Cytochrome c Group/immunology ; DNA, Complementary/genetics ; Genetic Vectors ; Histocompatibility Antigens Class II/genetics ; Hybridomas ; Interleukin-2/biosynthesis ; *Lymphocyte Activation ; Mice ; Molecular Sequence Data ; Peptides/chemistry/*immunology ; Receptors, Antigen, T-Cell/*immunology ; Recombinant Fusion Proteins ; T-Lymphocytes/*immunology ; Thymus Gland/cytology/*immunology
    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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  • 37
    Publication Date: 1997-04-11
    Description: Osteoclasts are multinucleated cells responsible for bone resorption. During the resorption cycle, osteoclasts undergo dramatic changes in their polarity, and resorbing cells reveal four functionally and structurally different membrane domains. Bone degradation products, both organic and inorganic, were endocytosed from the ruffled border membrane. They were then found to be transported in vesicles through the cell to the plasma membrane domain, located in the middle of the basal membrane, where they were liberated into the extracellular space. These results explain how resorbing osteoclasts can simultaneously remove large amounts of matrix degradation products and penetrate into bone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Salo, J -- Lehenkari, P -- Mulari, M -- Metsikko, K -- Vaananen, H K -- New York, N.Y. -- Science. 1997 Apr 11;276(5310):270-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Biocenter, University of Oulu, Kajaanintie 52 A, 90220 Oulu, Finland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9092479" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Animals ; Biological Transport ; Biotin/metabolism ; Bone Matrix/*metabolism ; *Bone Resorption ; Cattle ; Cell Membrane/metabolism/ultrastructure ; Cell Polarity ; Cells, Cultured ; Endocytosis ; Extracellular Space/metabolism ; Microscopy, Confocal ; Microscopy, Electron ; Minerals/metabolism ; Organelles/metabolism ; Osteocalcin/metabolism ; Osteoclasts/*metabolism/ultrastructure ; Rats ; Tetracycline/metabolism
    Print ISSN: 0036-8075
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  • 38
    Publication Date: 1997-10-23
    Description: A mechanism by which members of the ciliary neurotrophic factor (CNTF)-leukemia inhibitory factor cytokine family regulate gliogenesis in the developing mammalian central nervous system was characterized. Activation of the CNTF receptor promoted differentiation of cerebral cortical precursor cells into astrocytes and inhibited differentiation of cortical precursors along a neuronal lineage. Although CNTF stimulated both the Janus kinase-signal transducer and activator of transcription (JAK-STAT) and Ras-mitogen-activated protein kinase signaling pathways in cortical precursor cells, the JAK-STAT signaling pathway selectively enhanced differentiation of these precursors along a glial lineage. These findings suggest that cytokine activation of the JAK-STAT signaling pathway may be a mechanism by which cell fate is controlled during mammalian development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bonni, A -- Sun, Y -- Nadal-Vicens, M -- Bhatt, A -- Frank, D A -- Rozovsky, I -- Stahl, N -- Yancopoulos, G D -- Greenberg, M E -- NIHP30-HD 18655/HD/NICHD NIH HHS/ -- R01 CA43855/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Oct 17;278(5337):477-83.〈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/9334309" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/metabolism ; Astrocytes/*cytology/drug effects/metabolism ; Cell Differentiation ; Cell Division ; Cell Lineage ; Cells, Cultured ; Cerebral Cortex/*cytology/embryology ; Ciliary Neurotrophic Factor ; Cytokine Receptor gp130 ; DNA-Binding Proteins/*metabolism ; Dimerization ; Glial Fibrillary Acidic Protein/biosynthesis ; Growth Inhibitors/metabolism/pharmacology ; *Interleukin-6 ; Janus Kinase 1 ; Leukemia Inhibitory Factor ; Leukemia Inhibitory Factor Receptor alpha Subunit ; Lymphokines/metabolism/pharmacology ; Membrane Glycoproteins/metabolism ; Nerve Growth Factors/pharmacology ; Nerve Tissue Proteins/metabolism/pharmacology ; Platelet-Derived Growth Factor/pharmacology ; Protein-Tyrosine Kinases/*metabolism ; Rats ; Receptor Protein-Tyrosine Kinases/metabolism ; Receptor, Ciliary Neurotrophic Factor ; Receptors, Cytokine/metabolism ; Receptors, Nerve Growth Factor/metabolism ; Receptors, OSM-LIF ; STAT1 Transcription Factor ; STAT3 Transcription Factor ; *Signal Transduction ; Stem Cells/cytology ; Trans-Activators/*metabolism
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  • 39
    Publication Date: 1997-10-24
    Description: CD8(+) T lymphocytes from individuals infected with human immunodeficiency virus-type 1 (HIV-1) secrete a soluble activity that suppresses infection by HIV-1. A protein associated with this activity was purified from the culture supernatant of an immortalized CD8(+) T cell clone and identified as the beta-chemokine macrophage-derived chemokine (MDC). MDC suppressed infection of CD8(+) cell-depleted peripheral blood mononuclear cells by primary non-syncytium-inducing and syncytium-inducing isolates of HIV-1 and the T cell line-adapted isolate HIV-1IIIB. MDC was expressed in activated, but not resting, peripheral blood mononuclear cells and binds a receptor on activated primary T cells. These observations indicate that beta-chemokines are responsible for a major proportion of HIV-1-specific suppressor activity produced by primary T cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pal, R -- Garzino-Demo, A -- Markham, P D -- Burns, J -- Brown, M -- Gallo, R C -- DeVico, A L -- N01-AI-55279/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1997 Oct 24;278(5338):695-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Advanced BioScience Laboratories, 5510 Nicholson Lane, Kensington, MD 20895, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9381181" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antiviral Agents/*immunology ; Blotting, Northern ; CD8-Positive T-Lymphocytes/*immunology ; Calcium/blood ; Cell Line ; Cell Line, Transformed ; Cells, Cultured ; Chemokine CCL22 ; Chemokines, CC/chemistry/*immunology/isolation & purification/metabolism ; HIV Core Protein p24/biosynthesis ; HIV Infections/immunology ; HIV-1/*immunology/physiology ; Humans ; Leukocytes, Mononuclear/immunology/metabolism/*virology ; Lymphocyte Activation ; Receptors, Chemokine/metabolism ; Receptors, HIV/metabolism ; T-Lymphocytes/immunology
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  • 40
    Publication Date: 1997-04-11
    Description: The chemokine receptors CXCR4 and CCR5 have recently been shown to act as coreceptors, in concert with CD4, for human immunodeficiency virus-type 1 (HIV-1) infection. RANTES and other chemokines that interact with CCR5 and block infection of peripheral blood mononuclear cell cultures inhibit infection of primary macrophages inefficiently at best. If used to treat HIV-1-infected individuals, these chemokines could fail to influence HIV replication in nonlymphocyte compartments while promoting unwanted inflammatory side effects. A derivative of RANTES that was created by chemical modification of the amino terminus, aminooxypentane (AOP)-RANTES, did not induce chemotaxis and was a subnanomolar antagonist of CCR5 function in monocytes. It potently inhibited infection of diverse cell types (including macrophages and lymphocytes) by nonsyncytium-inducing, macrophage-tropic HIV-1 strains. Thus, activation of cells by chemokines is not a prerequisite for the inhibition of viral uptake and replication. Chemokine receptor antagonists like AOP-RANTES that achieve full receptor occupancy at nanomolar concentrations are strong candidates for the therapy of HIV-1-infected individuals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simmons, G -- Clapham, P R -- Picard, L -- Offord, R E -- Rosenkilde, M M -- Schwartz, T W -- Buser, R -- Wells, T N -- Proudfoot, A E -- New York, N.Y. -- Science. 1997 Apr 11;276(5310):276-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Virology Group, Chester Beatty Laboratories, Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9092481" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD4/metabolism ; Binding, Competitive ; Cats ; Cell Line ; Cells, Cultured ; Chemokine CCL4 ; Chemokine CCL5/metabolism/pharmacology ; Chemotaxis, Leukocyte ; HIV-1/*drug effects/physiology ; HeLa Cells ; Humans ; Macrophage Inflammatory Proteins/metabolism ; Macrophages/drug effects/*virology ; Receptors, CCR5 ; *Receptors, Chemokine ; Receptors, Cytokine/*antagonists & inhibitors/metabolism ; Receptors, HIV/*antagonists & inhibitors/metabolism ; T-Lymphocytes/drug effects/*virology ; Virus Replication/drug effects
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  • 41
    Publication Date: 1997-02-14
    Description: A lymphocyte population that expresses surface markers found on T cells and natural killer (NK) cells secretes large amounts of interleukin-4 (IL-4) immediately after T cell receptor ligation. These NK-like T cells are thus thought to be important for the initiation of type 2 T helper cell (TH2) responses. CD1-deficient mice were found to lack this lymphocyte subset, but they could nevertheless mount a protypical TH2 response; after immunization with antibody to immunoglobulin D (IgD), CD1-deficient mice produced IgE. Thus, although dependent on CD1 for their development, IL-4-secreting NK-like T cells are not required for TH2 responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smiley, S T -- Kaplan, M H -- Grusby, M J -- R01 A140171/PHS HHS/ -- New York, N.Y. -- Science. 1997 Feb 14;275(5302):977-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Harvard School of Public Health (HSPH), Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9020080" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/immunology ; Antibodies, Anti-Idiotypic/immunology ; Antigens, CD1/genetics/*physiology ; Antigens, CD3/immunology ; Cells, Cultured ; Gene Targeting ; Immunoglobulin D/immunology ; Immunoglobulin E/*biosynthesis ; Immunophenotyping ; Interferon-gamma/genetics/secretion ; Interleukin-4/biosynthesis/genetics/*secretion ; Killer Cells, Natural/immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; RNA, Messenger/genetics/metabolism ; Receptors, Antigen, T-Cell/immunology ; T-Lymphocyte Subsets/*immunology ; Th2 Cells/immunology ; beta 2-Microglobulin/genetics/physiology
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  • 42
    Publication Date: 1997-02-14
    Description: The mechanisms responsible for thyrocyte destruction in Hashimoto's thyroiditis (HT) are poorly understood. Thyrocytes from HT glands, but not from nonautoimmune thyroids, expressed Fas. Interleukin-1beta (IL-1beta), abundantly produced in HT glands, induced Fas expression in normal thyrocytes, and cross-linking of Fas resulted in massive thyrocyte apoptosis. The ligand for Fas (FasL) was shown to be constitutively expressed both in normal and HT thyrocytes and was able to kill Fas-sensitive targets. Exposure to IL-1beta induced thyrocyte apoptosis, which was prevented by antibodies that block Fas, suggesting that IL-1beta-induced Fas expression serves as a limiting factor for thyrocyte destruction. Thus, Fas-FasL interactions among HT thyrocytes may contribute to clinical hypothyroidism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giordano, C -- Stassi, G -- De Maria, R -- Todaro, M -- Richiusa, P -- Papoff, G -- Ruberti, G -- Bagnasco, M -- Testi, R -- Galluzzo, A -- A.066/Telethon/Italy -- New York, N.Y. -- Science. 1997 Feb 14;275(5302):960-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immunology, Endocrinology Section, Institute of Clinica Medica, University of Palermo, Palermo, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9020075" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Monoclonal/immunology ; Antigens, CD95/biosynthesis/immunology/*metabolism ; *Apoptosis ; Cells, Cultured ; Cytokines/pharmacology ; Fas Ligand Protein ; Humans ; Immunoenzyme Techniques ; Interleukin-1/pharmacology ; Membrane Glycoproteins/biosynthesis/*metabolism ; Nucleic Acid Synthesis Inhibitors/pharmacology ; Polymerase Chain Reaction ; Protein Synthesis Inhibitors/pharmacology ; RNA, Messenger/genetics/metabolism ; Recombinant Proteins/pharmacology ; Thyroid Gland/*metabolism/pathology ; Thyroiditis, Autoimmune/*etiology/metabolism/pathology ; Tumor Cells, Cultured
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  • 43
    Publication Date: 1997-03-14
    Description: The organization of calcium (Ca2+) stores in the sarcoplasmic and endoplasmic reticulum (S-ER) is poorly understood. The dynamics of the storage and release of calcium in the S-ER of intact, cultured astrocytes and arterial myocytes were studied with high-resolution imaging methods. The S-ER appeared to be a continuous tubular network; nevertheless, calcium stores in the S-ER were organized into small, spatially distinct compartments that functioned as discrete units. Cyclopiazonic acid (an inhibitor of the calcium pump in the S-ER membrane) and caffeine or ryanodine unloaded different, spatially separate compartments. Heterogeneity of calcium stores was also revealed in cells activated by physiological agonists. These results suggest that cells can generate spatially and temporally distinct calcium signals to control individual calcium-dependent processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Golovina, V A -- Blaustein, M P -- HL-32276/HL/NHLBI NIH HHS/ -- NS-16106/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1997 Mar 14;275(5306):1643-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology and Center for Vascular Biology and Hypertension, University of Maryland School of Medicine, Baltimore, MD 21201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9054358" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/*metabolism/ultrastructure ; Caffeine/pharmacology ; Calcium/*metabolism ; Calcium-Transporting ATPases/antagonists & inhibitors ; Cells, Cultured ; Endoplasmic Reticulum, Smooth/*metabolism/ultrastructure ; Fluorescent Dyes/metabolism ; Fura-2/analogs & derivatives/metabolism ; Glutamic Acid/pharmacology ; Indoles/pharmacology ; Mice ; Mitochondria/metabolism ; Mitochondria, Muscle/metabolism ; Muscle, Smooth, Vascular/cytology/*metabolism/ultrastructure ; Rats ; Ryanodine/pharmacology ; Sarcoplasmic Reticulum/*metabolism/ultrastructure ; Serotonin/pharmacology
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  • 44
    Publication Date: 1997-08-08
    Description: Most somatic cells die after a finite number of cell divisions, a phenomenon described as senescence. The p21(CIP1/WAF1) gene encodes an inhibitor of cyclin-dependent kinases. Inactivation of p21 by two sequential rounds of targeted homologous recombination was sufficient to bypass senescence in normal diploid human fibroblasts. At the checkpoint between the prereplicative phase of growth and the phase of chromosome replication, cells lacking p21 failed to arrest the cell cycle in response to DNA damage, but their apoptotic response and genomic stability were unaltered. These results establish the feasibility of using gene targeting for genetic studies of normal human cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, J P -- Wei, W -- Sedivy, J M -- GM41690/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Aug 8;277(5327):831-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI 02912, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9242615" target="_blank"〉PubMed〈/a〉
    Keywords: Apoptosis ; Aspartate Carbamoyltransferase/genetics ; Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)/genetics ; Cell Aging/*genetics ; Cell Division ; Cells, Cultured ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclins/*genetics/physiology ; DNA Damage ; Dihydroorotase/genetics ; Electroporation ; Fibroblasts ; G1 Phase ; *Gene Deletion ; Gene Targeting ; Genetic Vectors ; Humans ; Multienzyme Complexes/genetics ; Telomere/physiology
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  • 45
    Publication Date: 1997-04-11
    Description: Activation of CD4(+) T lymphocytes from human immunodeficiency virus-type 1 (HIV-1)-infected donors with immobilized antibodies to CD3 and CD28 induces a virus-resistant state. This effect is specific for macrophage-tropic HIV-1. Transcripts encoding CXCR4/Fusin, the fusion cofactor used by T cell line-tropic isolates, were abundant in CD3/CD28-stimulated cells, but transcripts encoding CCR5, the fusion cofactor used by macrophage-tropic viruses, were not detectable. Thus, CD3/CD28 costimulation induces an HIV-1-resistant phenotype similar to that seen in some highly exposed and HIV-uninfected individuals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carroll, R G -- Riley, J L -- Levine, B L -- Feng, Y -- Kaushal, S -- Ritchey, D W -- Bernstein, W -- Weislow, O S -- Brown, C R -- Berger, E A -- June, C H -- St Louis, D C -- New York, N.Y. -- Science. 1997 Apr 11;276(5310):273-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Henry M. Jackson Foundation for the Advancement of Military Medicine, Rockville, MD 20850, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9092480" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Monoclonal/immunology ; Antigens, CD28/*immunology ; Antigens, CD3/immunology ; CD4-Positive T-Lymphocytes/*immunology/metabolism/*virology ; Cells, Cultured ; Gene Expression Regulation ; HIV-1/*physiology ; Humans ; Interleukin-2/immunology ; *Lymphocyte Activation ; Membrane Fusion ; Membrane Proteins/*genetics ; Muromonab-CD3/immunology ; Phytohemagglutinins/pharmacology ; RNA, Messenger/genetics/metabolism ; Receptors, CCR5 ; Receptors, CXCR4 ; Receptors, Cytokine/genetics ; Receptors, HIV/*genetics ; Up-Regulation ; Virus Replication
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  • 46
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-09-26
    Description: The upper cervical corticospinal tract was transected on one side in adult rats. A suspension of ensheathing cells cultured from adult rat olfactory bulb was injected into the lesion site. This induced unbranched, elongative growth of the cut corticospinal axons. The axons grew through the transplant and continued to regenerate into the denervated caudal host tract. Rats with complete transections and no transplanted cells did not use the forepaw on the lesioned side for directed reaching. Rats in which the transplanted cells had formed a continuous bridge across the lesion exhibited directed forepaw reaching on the lesioned side.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Y -- Field, P M -- Raisman, G -- New York, N.Y. -- Science. 1997 Sep 26;277(5334):2000-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Norman and Sadie Lee Research Centre, Division of Neurobiology, National Institute for Medical Research, Medical Research Council, London NW7 1AA, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9302296" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/*physiology/ultrastructure ; Brain Tissue Transplantation ; Cell Transplantation ; Cells, Cultured ; Denervation ; Female ; Microscopy, Electron ; Myelin Sheath/physiology ; *Nerve Regeneration ; Neuroglia/physiology/*transplantation/ultrastructure ; Olfactory Bulb/*cytology ; Olfactory Nerve/*cytology ; Rats ; Spinal Cord/*physiology ; Spinal Cord Injuries/*surgery
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  • 47
    Publication Date: 1997-06-27
    Description: Parsley cells recognize the fungal plant pathogen Phytophthora sojae through a plasma membrane receptor. A pathogen-derived oligopeptide elicitor binds to this receptor and thereby stimulates a multicomponent defense response through sequential activation of ion channels and an oxidative burst. An elicitor-responsive mitogen-activated protein (MAP) kinase was identified that acts downstream of the ion channels but independently or upstream of the oxidative burst. Upon receptor-mediated activation, the MAP kinase is translocated to the nucleus where it might interact with transcription factors that induce expression of defense genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ligterink, W -- Kroj, T -- zur Nieden, U -- Hirt, H -- Scheel, D -- New York, N.Y. -- Science. 1997 Jun 27;276(5321):2054-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Microbiology and Genetics, Vienna Biocenter, Dr.-Bohr-Gasse 9, A-1030 Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9197271" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amphotericin B/pharmacology ; Anthracenes/pharmacology ; Calcium-Calmodulin-Dependent Protein Kinases/chemistry/genetics/*metabolism ; Cell Nucleus/enzymology ; Cells, Cultured ; Enzyme Activation ; Fungal Proteins/*pharmacology ; Ion Channels/drug effects/metabolism ; Membrane Glycoproteins/*pharmacology ; Molecular Sequence Data ; Onium Compounds/pharmacology ; Peptide Fragments/pharmacology ; Phosphorylation ; Phytophthora/metabolism ; Plants/*enzymology/genetics/microbiology ; Respiratory Burst/drug effects
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  • 48
    Publication Date: 1997-04-25
    Description: It is unclear whether organ-specific autoantigens are critical for the development of primary Sjogren's syndrome (SS). A 120-kilodalton organ-specific autoantigen was purified from salivary gland tissues of an NFS/sld mouse model of human SS. The amino-terminal residues were identical to those of the human cytoskeletal protein alpha-fodrin. The purified antigen induced proliferative T cell responses and production of interleukin-2 and interferon-gamma in vitro. Neonatal immunization with the 120-kilodalton antigen prevented the disease in mice. Sera from patients with SS reacted positively with purified antigen and recombinant human alpha-fodrin protein, whereas those from patients with systemic lupus erythematosus and rheumatoid arthritis did not. Thus, the immune response to 120-kilodalton alpha-fodrin could be important in the initial development of primary SS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haneji, N -- Nakamura, T -- Takio, K -- Yanagi, K -- Higashiyama, H -- Saito, I -- Noji, S -- Sugino, H -- Hayashi, Y -- New York, N.Y. -- Science. 1997 Apr 25;276(5312):604-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Tokushima University School of Dentistry, 3 Kuramotocho, Tokushima 770, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9110981" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Arthritis, Rheumatoid/immunology ; Autoantibodies/biosynthesis/immunology ; Autoantigens/*immunology/isolation & purification ; Carrier Proteins/*immunology/isolation & purification ; Cells, Cultured ; Disease Models, Animal ; Humans ; Immunization ; Immunoblotting ; Interferon-gamma/biosynthesis ; Interleukin-2/biosynthesis ; Lupus Erythematosus, Systemic/immunology ; Lymphocyte Activation ; Mice ; Mice, Inbred Strains ; Microfilament Proteins/*immunology/isolation & purification ; Molecular Sequence Data ; Organ Specificity ; Recombinant Fusion Proteins/immunology ; Salivary Glands/immunology ; Sjogren's Syndrome/*immunology/prevention & control ; T-Lymphocytes/immunology
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  • 49
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-04-04
    Description: Marrow stromal cells can be isolated from other cells in marrow by their tendency to adhere to tissue culture plastic. The cells have many of the characteristics of stem cells for tissues that can roughly be defined as mesenchymal, because they can be differentiated in culture into osteoblasts, chondrocytes, adipocytes, and even myoblasts. Therefore, marrow stromal cells present an intriguing model for examining the differentiation of stem cells. Also, they have several characteristics that make them potentially useful for cell and gene therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Prockop, D J -- New York, N.Y. -- Science. 1997 Apr 4;276(5309):71-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Gene Therapy, Allegheny University of the Health Sciences, MCP-Hahnemann School of Medicine, 245 North 15 Street, Mail Stop 421, Philadelphia, PA 19102, USA. prockop@allegheny.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9082988" target="_blank"〉PubMed〈/a〉
    Keywords: Adipocytes/cytology ; Animals ; *Bone Marrow Cells ; Bone Marrow Transplantation ; Cartilage/cytology ; Cell Differentiation ; Cells, Cultured ; Cytokines/metabolism ; Genetic Therapy ; Humans ; Muscle Fibers, Skeletal/cytology ; Osteoblasts/cytology ; Stem Cells/*cytology/physiology ; Stromal Cells/*cytology/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 50
    Publication Date: 1997-08-22
    Description: Nerve growth factor (NGF) is a neurotrophic factor secreted by cells that are the targets of innervation of sympathetic and some sensory neurons. However, the mechanism by which the NGF signal is propagated from the axon terminal to the cell body, which can be more than 1 meter away, to influence biochemical events critical for growth and survival of neurons has remained unclear. An NGF-mediated signal transmitted from the terminals and distal axons of cultured rat sympathetic neurons to their nuclei regulated phosphorylation of the transcription factor CREB (cyclic adenosine monophosphate response element-binding protein). Internalization of NGF and its receptor tyrosine kinase TrkA, and their transport to the cell body, were required for transmission of this signal. The tyrosine kinase activity of TrkA was required to maintain it in an autophosphorylated state upon its arrival in the cell body and for propagation of the signal to CREB within neuronal nuclei. Thus, an NGF-TrkA complex is a messenger that delivers the NGF signal from axon terminals to cell bodies of sympathetic neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Riccio, A -- Pierchala, B A -- Ciarallo, C L -- Ginty, D D -- New York, N.Y. -- Science. 1997 Aug 22;277(5329):1097-100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Johns Hopkins University 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/9262478" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; *Axonal Transport ; Axons/*metabolism ; Carbazoles/pharmacology ; Cell Membrane/metabolism ; Cells, Cultured ; Cyclic AMP Response Element-Binding Protein/*metabolism ; Indole Alkaloids ; Microspheres ; Nerve Growth Factors/*metabolism/pharmacology ; Neurons/*metabolism ; Phosphorylation ; Proto-Oncogene Proteins/antagonists & inhibitors/*metabolism ; Rats ; Receptor Protein-Tyrosine Kinases/antagonists & inhibitors/*metabolism ; Receptor, trkA ; Receptors, Nerve Growth Factor/antagonists & inhibitors/*metabolism ; Signal Transduction ; Superior Cervical Ganglion/cytology
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  • 51
    Publication Date: 1997-11-21
    Description: Induction of apoptosis by oncogenes like c-myc may be important in restraining the emergence of neoplasia. However, the mechanism by which c-myc induces apoptosis is unknown. CD95 (also termed Fas or APO-1) is a cell surface transmembrane receptor of the tumor necrosis factor receptor family that activates an intrinsic apoptotic suicide program in cells upon binding either its ligand CD95L or antibody. c-myc-induced apoptosis was shown to require interaction on the cell surface between CD95 and its ligand. c-Myc acts downstream of the CD95 receptor by sensitizing cells to the CD95 death signal. Moreover, IGF-I signaling and Bcl-2 suppress c-myc-induced apoptosis by also acting downstream of CD95. These findings link two apoptotic pathways previously thought to be independent and establish the dependency of Myc on CD95 signaling for its killing activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hueber, A O -- Zornig, M -- Lyon, D -- Suda, T -- Nagata, S -- Evan, G I -- New York, N.Y. -- Science. 1997 Nov 14;278(5341):1305-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Imperial Cancer Research Fund (ICRF) Laboratories, 44 Lincoln's Inn Fields, London WC2A 3PX, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9360929" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; *Adaptor Proteins, Signal Transducing ; Animals ; Antigens, CD95/*metabolism ; *Apoptosis ; Autocrine Communication ; Carrier Proteins/metabolism ; Cell Line ; Cell Membrane/metabolism ; Cells, Cultured ; Fas Ligand Protein ; Fas-Associated Death Domain Protein ; Gene Expression Regulation ; Genes, myc ; Insulin-Like Growth Factor I/pharmacology/physiology ; Membrane Glycoproteins/*metabolism ; Mice ; Proto-Oncogene Proteins c-bcl-2/pharmacology/physiology ; Proto-Oncogene Proteins c-myc/*metabolism ; Rats
    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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  • 52
    Publication Date: 1997-02-07
    Description: Generally, impulse propagation in cardiac tissue is assumed to be impaired by a reduction of intercellular electrical coupling or by the presence of structural discontinuities. Contrary to this notion, the spatially uniform reduction of electrical coupling induced successful conduction in discontinuous cardiac tissue structures exhibiting unidirectional conduction block. This seemingly paradoxical finding can be explained by a nonsymmetric effect of uncoupling on the current source and the current sink in the preparations used. It suggests that partial cellular uncoupling might prevent the initiation of cardiac arrhythmias that are dependent on the presence of unidirectional conduction block.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rohr, S -- Kucera, J P -- Fast, V G -- Kleber, A G -- New York, N.Y. -- Science. 1997 Feb 7;275(5301):841-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of Bern, Buhlplatz 5, CH-3012 Bern, Switzerland. rohr@pyl.unibe.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9012353" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Arrhythmias, Cardiac/physiopathology ; Cells, Cultured ; Diffusion ; Fatty Acids, Monounsaturated/pharmacology ; Gap Junctions/physiology ; Heart/*physiology ; Heart Conduction System/*physiology ; Microscopy, Video ; Rats
    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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  • 53
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-01-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, G -- New York, N.Y. -- Science. 1997 Jan 31;275(5300):621.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9019818" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Chromosome Mapping ; *Chromosomes, Human, Pair 1 ; Chromosomes, Human, Pair 3 ; Cytoskeletal Proteins ; Eye Proteins/*genetics ; Genetic Linkage ; Genetic Markers ; Glaucoma, Open-Angle/*genetics ; *Glycoproteins ; Humans ; Mice ; Mutation ; Proteins/secretion ; Steroids/pharmacology ; Trabecular Meshwork/cytology/drug effects/secretion
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 54
    Publication Date: 1997-10-10
    Description: Substance P is released in the spinal cord in response to painful stimuli, but its role in nociceptive signaling remains unclear. When a conjugate of substance P and the ribosome-inactivating protein saporin was infused into the spinal cord, it was internalized and cytotoxic to lamina I spinal cord neurons that express the substance P receptor. This treatment left responses to mild noxious stimuli unchanged, but markedly attenuated responses to highly noxious stimuli and mechanical and thermal hyperalgesia. Thus, lamina I spinal cord neurons that express the substance P receptor play a pivotal role in the transmission of highly noxious stimuli and the maintenance of hyperalgesia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mantyh, P W -- Rogers, S D -- Honore, P -- Allen, B J -- Ghilardi, J R -- Li, J -- Daughters, R S -- Lappi, D A -- Wiley, R G -- Simone, D A -- MH56368/MH/NIMH NIH HHS/ -- NS23970/NS/NINDS NIH HHS/ -- NS31223/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1997 Oct 10;278(5336):275-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Neurobiology Laboratory (151), Veterans Administration Medical Center, Minneapolis, MN 55417, USA. manty001@maroon.tc.umn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9323204" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Capsaicin ; Cell Membrane/metabolism ; Cells, Cultured ; Fluorescent Antibody Technique ; Hyperalgesia/physiopathology/*therapy ; *Immunotoxins ; Injections, Spinal ; *N-Glycosyl Hydrolases ; Neurons/cytology/*metabolism ; Pain/physiopathology ; *Pain Management ; Pain Measurement ; Plant Proteins/metabolism/pharmacology ; Rats ; Rats, Sprague-Dawley ; Receptors, Neurokinin-1/biosynthesis/*metabolism ; Ribosome Inactivating Proteins, Type 1 ; Signal Transduction ; Spinal Cord/*cytology/metabolism ; Substance P/*metabolism/pharmacology
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  • 55
    Publication Date: 1997-04-25
    Description: The gene encoding the BCL-6 transcriptional repressor is frequently translocated and mutated in diffuse large cell lymphoma. Mice with a disrupted BCL-6 gene developed myocarditis and pulmonary vasculitis, had no germinal centers, and had increased expression of T helper cell type 2 cytokines. The BCL-6 DNA recognition motif resembled sites bound by the STAT (signal transducers and activators of transcription) transcription factors, which mediate cytokine signaling. BCL-6 could repress interleukin-4 (IL-4)-induced transcription when bound to a site recognized by the IL-4-responsive transcription factor Stat6. Thus, dysregulation of STAT-responsive genes may underlie the inflammatory disease in BCL-6-deficient mice and participate in lymphoid malignancies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dent, A L -- Shaffer, A L -- Yu, X -- Allman, D -- Staudt, L M -- New York, N.Y. -- Science. 1997 Apr 25;276(5312):589-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Metabolism Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9110977" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/immunology ; Cells, Cultured ; Cytokines/*biosynthesis ; DNA-Binding Proteins/genetics/*physiology ; Ficoll/analogs & derivatives/immunology ; Germinal Center/*immunology ; Hemocyanin/immunology ; Immunoglobulins/biosynthesis ; Inflammation/*immunology/pathology ; Interferon-gamma/biosynthesis ; Interleukin-4/metabolism ; Interleukins/biosynthesis/metabolism ; Lymphocyte Activation ; Mice ; Myocarditis/immunology/pathology ; Proto-Oncogene Proteins/genetics/*physiology ; Proto-Oncogene Proteins c-bcl-6 ; Receptors, IgE/genetics ; STAT6 Transcription Factor ; Signal Transduction ; Spleen/immunology ; T-Lymphocytes/immunology ; Th2 Cells/immunology ; Trans-Activators/metabolism ; Transcription Factors/genetics/*physiology ; Transcription, Genetic ; Trinitrobenzenes/immunology ; Vasculitis/immunology/pathology
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  • 56
    Publication Date: 1997-07-18
    Description: Proteins of the Bcl-2 family are intracellular membrane-associated proteins that regulate programmed cell death (apoptosis) either positively or negatively by as yet unknown mechanisms. Bax, a pro-apoptotic member of the Bcl-2 family, was shown to form channels in lipid membranes. Bax triggered the release of liposome-encapsulated carboxyfluorescein at both neutral and acidic pH. At physiological pH, release could be blocked by Bcl-2. Bcl-2, in contrast, triggered carboxyfluorescein release at acidic pH only. In planar lipid bilayers, Bax formed pH- and voltage-dependent ion-conducting channels. Thus, the pro-apoptotic effects of Bax may be elicited through an intrinsic pore-forming activity that can be antagonized by Bcl-2.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Antonsson, B -- Conti, F -- Ciavatta, A -- Montessuit, S -- Lewis, S -- Martinou, I -- Bernasconi, L -- Bernard, A -- Mermod, J J -- Mazzei, G -- Maundrell, K -- Gambale, F -- Sadoul, R -- Martinou, J C -- New York, N.Y. -- Science. 1997 Jul 18;277(5324):370-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geneva Biomedical Research Institute, Glaxo Wellcome R&D S. A., 1288 Plan les Ouates, Geneva, Switzerland. beau6063@ggr.co.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9219694" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Membrane Permeability ; Cells, Cultured ; Erythrocytes/cytology ; Fluoresceins/metabolism ; Hemolysis ; Humans ; Hydrogen-Ion Concentration ; Ion Channels/*physiology ; Lipid Bilayers ; Liposomes ; Membrane Potentials ; Neurons/cytology ; Patch-Clamp Techniques ; Proto-Oncogene Proteins/pharmacology/*physiology ; Proto-Oncogene Proteins c-bcl-2/antagonists & inhibitors/pharmacology/*physiology ; Sheep ; Sympathetic Nervous System/cytology ; bcl-2-Associated X Protein
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  • 57
    Publication Date: 1997-08-01
    Description: The c-Jun amino-terminal kinase (JNK) is a member of the stress-activated group of mitogen-activated protein (MAP) kinases that are implicated in the control of cell growth. A murine cytoplasmic protein that binds specifically to JNK [the JNK interacting protein-1 (JIP-1)] was characterized and cloned. JIP-1 caused cytoplasmic retention of JNK and inhibition of JNK-regulated gene expression. In addition, JIP-1 suppressed the effects of the JNK signaling pathway on cellular proliferation, including transformation by the Bcr-Abl oncogene. This analysis identifies JIP-1 as a specific inhibitor of the JNK signal transduction pathway and establishes protein targeting as a mechanism that regulates signaling by stress-activated MAP kinases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dickens, M -- Rogers, J S -- Cavanagh, J -- Raitano, A -- Xia, Z -- Halpern, J R -- Greenberg, M E -- Sawyers, C L -- Davis, R J -- CA43855/CA/NCI NIH HHS/ -- CA65861/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Aug 1;277(5326):693-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Program in Molecular Medicine, Department of Biochemistry and Molecular Biology, University of Massachusetts Medical School, 373 Plantation Street, Worcester, MA 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9235893" target="_blank"〉PubMed〈/a〉
    Keywords: Activating Transcription Factor 2 ; Animals ; COS Cells ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Carrier Proteins/chemistry/*metabolism ; Cell Nucleus/metabolism ; Cell Transformation, Neoplastic ; Cells, Cultured ; Cloning, Molecular ; Cyclic AMP Response Element-Binding Protein/metabolism ; Cytoplasm/metabolism ; Fusion Proteins, bcr-abl/metabolism ; Gene Expression Regulation ; JNK Mitogen-Activated Protein Kinases ; Mitogen-Activated Protein Kinase 9 ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Phosphorylation ; Protein Kinases/metabolism ; Proto-Oncogene Proteins c-jun/metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; Transcription Factors/metabolism ; Transcriptional Activation ; Transfection
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  • 58
    Publication Date: 1997-02-14
    Description: Putative endothelial cell (EC) progenitors or angioblasts were isolated from human peripheral blood by magnetic bead selection on the basis of cell surface antigen expression. In vitro, these cells differentiated into ECs. In animal models of ischemia, heterologous, homologous, and autologous EC progenitors incorporated into sites of active angiogenesis. These findings suggest that EC progenitors may be useful for augmenting collateral vessel growth to ischemic tissues (therapeutic angiogenesis) and for delivering anti- or pro-angiogenic agents, respectively, to sites of pathologic or utilitarian angiogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Asahara, T -- Murohara, T -- Sullivan, A -- Silver, M -- van der Zee, R -- Li, T -- Witzenbichler, B -- Schatteman, G -- Isner, J M -- 2824/PHS HHS/ -- 53354/PHS HHS/ -- 57516/PHS HHS/ -- New York, N.Y. -- Science. 1997 Feb 14;275(5302):964-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine (Cardiology), St. Elizabeth's Medical Center, Tufts University School of Medicine, 736 Cambridge Street, Boston, MA 02135, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9020076" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD34/analysis ; Biomarkers/analysis ; Cell Differentiation ; Cell Separation ; Cells, Cultured ; Endothelium, Vascular/chemistry/*cytology ; Flow Cytometry ; Hindlimb/blood supply ; Humans ; Ischemia/physiopathology ; Mice ; Mice, Inbred C57BL ; Mice, Nude ; Mice, Transgenic ; *Neovascularization, Physiologic ; Nitric Oxide Synthase/analysis ; Rabbits ; Receptor Protein-Tyrosine Kinases/analysis ; Receptors, Growth Factor/analysis ; Receptors, Vascular Endothelial Growth Factor ; Stem Cells/chemistry/*cytology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 59
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-04-04
    Description: In the vertebrate central nervous system, multipotential cells have been identified in vitro and in vivo. Defined mitogens cause the proliferation of multipotential cells in vitro, the magnitude of which is sufficient to account for the number of cells in the brain. Factors that control the differentiation of fetal stem cells to neurons and glia have been defined in vitro, and multipotential cells with similar signaling logic can be cultured from the adult central nervous system. Transplanting cells to new sites emphasizes that neuroepithelial cells have the potential to integrate into many brain regions. These results focus attention on how information in external stimuli is translated into the number and types of differentiated cells in the brain. The development of therapies for the reconstruction of the diseased or injured brain will be guided by our understanding of the origin and stability of cell type in the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McKay, R -- New York, N.Y. -- Science. 1997 Apr 4;276(5309):66-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, National Institute of Neurological Disorders and Stroke, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9082987" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/cytology/embryology ; Brain Tissue Transplantation ; Cell Differentiation ; Cell Line ; Cell Lineage ; Cell Movement ; Cell Transplantation ; Cells, Cultured ; Central Nervous System/*cytology/embryology ; Central Nervous System Diseases/therapy ; Humans ; Neuroglia/*cytology ; Neurons/*cytology ; Spinal Cord/cytology/embryology ; Stem Cells/*cytology/physiology
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  • 60
    Publication Date: 1997-01-31
    Description: A signaling pathway was delineated by which insulin-like growth factor 1 (IGF-1) promotes the survival of cerebellar neurons. IGF-1 activation of phosphoinositide 3-kinase (PI3-K) triggered the activation of two protein kinases, the serine-threonine kinase Akt and the p70 ribosomal protein S6 kinase (p70(S6K)). Experiments with pharmacological inhibitors, as well as expression of wild-type and dominant-inhibitory forms of Akt, demonstrated that Akt but not p70(S6K) mediates PI3-K-dependent survival. These findings suggest that in the developing nervous system, Akt is a critical mediator of growth factor-induced neuronal survival.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dudek, H -- Datta, S R -- Franke, T F -- Birnbaum, M J -- Yao, R -- Cooper, G M -- Segal, R A -- Kaplan, D R -- Greenberg, M E -- DK39519/DK/NIDDK NIH HHS/ -- R01 CA18689/CA/NCI NIH HHS/ -- R01 CA43855/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 Jan 31;275(5300):661-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, Children's Hospital, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9005851" target="_blank"〉PubMed〈/a〉
    Keywords: Androstadienes/pharmacology ; Animals ; *Apoptosis/drug effects ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cell Survival/drug effects ; Cells, Cultured ; Cerebellum/cytology ; Chromones/pharmacology ; Enzyme Activation ; Enzyme Inhibitors/pharmacology ; Insulin/pharmacology ; Insulin-Like Growth Factor I/*pharmacology ; Morpholines/pharmacology ; Neurons/*cytology/drug effects/enzymology ; Phosphatidylinositol 3-Kinases ; Phosphotransferases (Alcohol Group Acceptor)/metabolism ; Protein-Serine-Threonine Kinases/*metabolism ; Proto-Oncogene Proteins/chemistry/genetics/*metabolism ; Proto-Oncogene Proteins c-akt ; Rats ; Ribosomal Protein S6 Kinases ; *Signal Transduction ; Transfection
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  • 61
    Publication Date: 1997-08-22
    Description: Anandamide, an endogenous ligand for central cannabinoid receptors, is released from neurons on depolarization and rapidly inactivated. Anandamide inactivation is not completely understood, but it may occur by transport into cells or by enzymatic hydrolysis. The compound N-(4-hydroxyphenyl)arachidonylamide (AM404) was shown to inhibit high-affinity anandamide accumulation in rat neurons and astrocytes in vitro, an indication that this accumulation resulted from carrier-mediated transport. Although AM404 did not activate cannabinoid receptors or inhibit anandamide hydrolysis, it enhanced receptor-mediated anandamide responses in vitro and in vivo. The data indicate that carrier-mediated transport may be essential for termination of the biological effects of anandamide, and may represent a potential drug target.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beltramo, M -- Stella, N -- Calignano, A -- Lin, S Y -- Makriyannis, A -- Piomelli, D -- New York, N.Y. -- Science. 1997 Aug 22;277(5329):1094-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Neurosciences Institute, 10640 J. J. Hopkins Drive, San Diego, CA 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9262477" target="_blank"〉PubMed〈/a〉
    Keywords: Analgesics/pharmacology ; Animals ; Arachidonic Acids/antagonists & inhibitors/*metabolism/pharmacology ; Astrocytes/drug effects/*metabolism ; Benzoxazines ; Biological Transport/drug effects ; Bromcresol Green/pharmacology ; Cannabinoids/antagonists & inhibitors/*metabolism/pharmacology ; Cells, Cultured ; Colforsin/pharmacology ; Cyclic AMP/metabolism ; Endocannabinoids ; Male ; Mice ; Morpholines/pharmacology ; Naphthalenes/pharmacology ; Neurons/drug effects/*metabolism ; Piperidines/pharmacology ; Polyunsaturated Alkamides ; Pyrazoles/pharmacology ; Rats ; Receptors, Cannabinoid ; Receptors, Drug/agonists/metabolism
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  • 62
    Publication Date: 1997-01-24
    Description: Heterotrimeric GTP-binding proteins (G proteins) participate in cellular signaling and regulate a variety of physiological processes. Disruption of the gene encoding the G protein subunit alpha13 (Galpha13) in mice impaired the ability of endothelial cells to develop into an organized vascular system, resulting in intrauterine death. In addition, Galpha13 (-/-) embryonic fibroblasts showed greatly impaired migratory responses to thrombin. These results demonstrate that Galpha13 participates in the regulation of cell movement in response to specific ligands, as well as in developmental angiogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Offermanns, S -- Mancino, V -- Revel, J P -- Simon, M I -- AG 12288/AG/NIA NIH HHS/ -- GM 34236/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Jan 24;275(5299):533-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology 147-75, California Institute of Technology, Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8999798" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood ; Bradykinin/pharmacology ; Cell Differentiation ; *Cell Movement/drug effects ; Cells, Cultured ; Embryo, Mammalian/metabolism ; Embryonic and Fetal Development ; Endothelium, Vascular/*cytology/embryology ; Female ; Fibronectins/pharmacology ; GTP-Binding Proteins/genetics/*physiology ; Gene Expression ; Gene Targeting ; Heterozygote ; Homozygote ; Lysophospholipids/pharmacology ; Male ; Mice ; Mice, Inbred C57BL ; *Neovascularization, Physiologic ; Signal Transduction ; Thrombin/pharmacology
    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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  • 63
    Publication Date: 1997-06-20
    Description: The avian sarcoma virus 16 (ASV 16) is a retrovirus that induces hemangiosarcomas in chickens. Analysis of the ASV 16 genome revealed that it encodes an oncogene that is derived from the cellular gene for the catalytic subunit of phosphoinositide 3-kinase (PI 3-kinase). The gene is referred to as v-p3k, and like its cellular counterpart c-p3k, it is a potent transforming gene in cultured chicken embryo fibroblasts (CEFs). The products of the viral and cellular p3k genes have PI 3-kinase activity. CEFs transformed with either gene showed elevated levels of phosphatidylinositol 3,4-bisphosphate and phosphatidylinositol 3,4,5-trisphosphate and activation of Akt kinase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, H W -- Aoki, M -- Fruman, D -- Auger, K R -- Bellacosa, A -- Tsichlis, P N -- Cantley, L C -- Roberts, T M -- Vogt, P K -- CA 42564/CA/NCI NIH HHS/ -- GM 41890/GM/NIGMS NIH HHS/ -- R01 GM041890/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Jun 20;276(5320):1848-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Experimental Medicine, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9188528" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Avian Sarcoma Viruses/*genetics/physiology ; *Cell Transformation, Neoplastic ; *Cell Transformation, Viral ; Cells, Cultured ; Chick Embryo ; Chickens ; Cloning, Molecular ; Enzyme Activation ; Genes, Viral ; Hemangiosarcoma/genetics/virology ; Molecular Sequence Data ; *Oncogenes ; Phosphatidylinositol 3-Kinases ; Phosphatidylinositol Phosphates/metabolism ; Phosphotransferases (Alcohol Group Acceptor)/*genetics/metabolism ; Platelet-Derived Growth Factor/pharmacology ; Protein-Serine-Threonine Kinases/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Signal Transduction ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 64
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-05-30
    Description: Human and bovine capillary endothelial cells were switched from growth to apoptosis by using micropatterned substrates that contained extracellular matrix-coated adhesive islands of decreasing size to progressively restrict cell extension. Cell spreading also was varied while maintaining the total cell-matrix contact area constant by changing the spacing between multiple focal adhesion-sized islands. Cell shape was found to govern whether individual cells grow or die, regardless of the type of matrix protein or antibody to integrin used to mediate adhesion. Local geometric control of cell growth and viability may therefore represent a fundamental mechanism for developmental regulation within the tissue microenvironment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, C S -- Mrksich, M -- Huang, S -- Whitesides, G M -- Ingber, D E -- CA55833/CA/NCI NIH HHS/ -- GM30367/GM/NIGMS NIH HHS/ -- HL47699/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1997 May 30;276(5317):1425-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Surgery, Children's Hospital-Harvard Medical School, Enders 1007, 300 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9162012" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD29/physiology ; Apoptosis/*physiology ; Cattle ; Cell Adhesion/physiology ; Cell Division/*physiology ; Cell Size/*physiology ; Cells, Cultured ; Endothelium, Vascular/*cytology/physiology ; Extracellular Matrix/physiology ; Fibronectins/physiology ; Humans ; Integrins/physiology ; Ligands ; Vitronectin/physiology
    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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  • 65
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gura, T -- New York, N.Y. -- Science. 1997 Jun 20;276(5320):1788-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9206838" target="_blank"〉PubMed〈/a〉
    Keywords: Bone Marrow/pathology/virology ; Cells, Cultured ; Dendritic Cells/*virology ; Herpesvirus 8, Human/metabolism/*pathogenicity ; Humans ; Interleukin-6/*biosynthesis/genetics ; Multiple Myeloma/pathology/*virology ; Paraproteinemias/pathology ; Polymerase Chain Reaction ; RNA, Messenger/analysis/genetics ; Sarcoma, Kaposi/virology ; Stromal Cells/metabolism/virology
    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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  • 66
    facet.materialart.
    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1997-09-12
    Description: In the developing nervous system, glial cells guide axons to their target areas, but it is unknown whether they help neurons to establish functional synaptic connections. The role of glial cells in synapse formation and function was studied in cultures of purified neurons from the rat central nervous system. In glia-free cultures, retinal ganglion cells formed synapses with normal ultrastructure but displayed little spontaneous synaptic activity and high failure rates in evoked synaptic transmission. In cocultures with neuroglia, the frequency and amplitude of spontaneous postsynaptic currents were potentiated by 70-fold and 5-fold, respectively, and fewer transmission failures occurred. Glial cells increased the action potential-independent quantal release by 12-fold without affecting neuronal survival. Thus, developing neurons in culture form inefficient synapses that require glial signals to become fully functional.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pfrieger, F W -- Barres, B A -- New York, N.Y. -- Science. 1997 Sep 12;277(5332):1684-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Stanford University, School of Medicine, Sherman Fairchild Science Building, 299 Campus Drive, Stanford, CA 94305-5125, USA. fpfrieg@mdc-berlin.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9287225" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Astrocytes/physiology ; Cell Survival ; Cells, Cultured ; Coculture Techniques ; Microglia/physiology ; Neuroglia/*physiology ; Oligodendroglia/physiology ; Rats ; Rats, Sprague-Dawley ; Retinal Ganglion Cells/cytology/*physiology/ultrastructure ; Synapses/*physiology/ultrastructure ; *Synaptic Transmission
    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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  • 67
    Publication Date: 2010-07-03
    Description: The identities of the regulators that mediate commitment of hematopoietic precursors to the T lymphocyte lineage have been unknown. The last stage of T lineage commitment in vivo involves mechanisms to suppress natural killer cell potential, to suppress myeloid and dendritic cell potential, and to silence the stem cell or progenitor cell regulatory functions that initially provide T cell receptor-independent self-renewal capability. The zinc finger transcription factor Bcl11b is T cell-specific in expression among hematopoietic cell types and is first expressed in precursors immediately before T lineage commitment. We found that Bcl11b is necessary for T lineage commitment in mice and is specifically required both to repress natural killer cell-associated genes and to down-regulate a battery of stem cell or progenitor cell genes at the pivotal stage of commitment.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2935300/" 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/PMC2935300/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Long -- Leid, Mark -- Rothenberg, Ellen V -- F06 TW002367/TW/FIC NIH HHS/ -- F06 TW002367-01A1/TW/FIC NIH HHS/ -- R01 GM060852/GM/NIGMS NIH HHS/ -- R01 GM060852-04/GM/NIGMS NIH HHS/ -- R01 GM60852/GM/NIGMS NIH HHS/ -- R33 HL089123/HL/NHLBI NIH HHS/ -- R33 HL089123-03/HL/NHLBI NIH HHS/ -- RC2 CA148278/CA/NCI NIH HHS/ -- RC2 CA148278-02/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2010 Jul 2;329(5987):89-93. doi: 10.1126/science.1188989.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology 156-29, California Institute of Technology, Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20595614" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; *Cell Lineage ; Cells, Cultured ; Down-Regulation ; Gene Expression Profiling ; *Gene Expression Regulation, Developmental ; Genes, T-Cell Receptor delta ; Genes, T-Cell Receptor gamma ; Killer Cells, Natural/cytology/physiology ; *Lymphopoiesis/genetics ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Precursor Cells, T-Lymphoid/cytology/immunology/*physiology ; Receptors, Antigen, T-Cell, gamma-delta/metabolism ; Receptors, Notch/metabolism ; Repressor Proteins/deficiency/genetics/*metabolism ; Signal Transduction ; T-Lymphocytes/cytology/metabolism/*physiology ; Transcription Factors/genetics/metabolism ; Tumor Suppressor Proteins/deficiency/genetics/*metabolism
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  • 68
    Publication Date: 2010-06-12
    Description: T cells develop in the thymus and are critical for adaptive immunity. Natural killer (NK) lymphocytes constitute an essential component of the innate immune system in tumor surveillance, reproduction, and defense against microbes and viruses. Here, we show that the transcription factor Bcl11b was expressed in all T cell compartments and was indispensable for T lineage development. When Bcl11b was deleted, T cells from all developmental stages acquired NK cell properties and concomitantly lost or decreased T cell-associated gene expression. These induced T-to-natural killer (ITNK) cells, which were morphologically and genetically similar to conventional NK cells, killed tumor cells in vitro, and effectively prevented tumor metastasis in vivo. Therefore, ITNKs may represent a new cell source for cell-based therapies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3628452/" 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/PMC3628452/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Peng -- Burke, Shannon -- Wang, Juexuan -- Chen, Xiongfeng -- Ortiz, Mariaestela -- Lee, Song-Choon -- Lu, Dong -- Campos, Lia -- Goulding, David -- Ng, Bee Ling -- Dougan, Gordon -- Huntly, Brian -- Gottgens, Bertie -- Jenkins, Nancy A -- Copeland, Neal G -- Colucci, Francesco -- Liu, Pentao -- 076962/Wellcome Trust/United Kingdom -- 077186/Wellcome Trust/United Kingdom -- G0501150/Medical Research Council/United Kingdom -- G0800784/Medical Research Council/United Kingdom -- G116/187/Medical Research Council/United Kingdom -- Biotechnology and Biological Sciences Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2010 Jul 2;329(5987):85-9. doi: 10.1126/science.1188063. Epub 2010 Jun 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1HH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20538915" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line, Tumor ; *Cell Lineage ; Cells, Cultured ; Coculture Techniques ; Cytotoxicity, Immunologic ; Gene Deletion ; Gene Expression Profiling ; Gene Expression Regulation, Developmental ; Gene Knock-In Techniques ; Genes, T-Cell Receptor beta ; Killer Cells, Natural/cytology/immunology/*physiology ; *Lymphopoiesis/genetics ; Melanoma, Experimental/immunology/therapy ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Oligonucleotide Array Sequence Analysis ; Precursor Cells, T-Lymphoid/cytology/physiology ; Receptors, Antigen, T-Cell, alpha-beta/metabolism ; Repressor Proteins/*genetics/*metabolism ; Signal Transduction ; Stromal Cells/cytology/physiology ; T-Lymphocytes/cytology/immunology/*physiology/transplantation ; Tamoxifen/analogs & derivatives/pharmacology ; Tumor Suppressor Proteins/*genetics/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 69
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-12-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bates, Mark -- New York, N.Y. -- Science. 2010 Dec 3;330(6009):1334-5. doi: 10.1126/science.1200252.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of NanoBiophotonics, Max Planck Institute for Biophysical Chemistry, 37077 Gottingen, Germany. mbates@ggweg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21127240" target="_blank"〉PubMed〈/a〉
    Keywords: Awards and Prizes ; *Carbocyanines/chemistry ; Cells, Cultured ; Coated Pits, Cell-Membrane/*ultrastructure ; *Fluorescent Dyes/chemistry ; Image Processing, Computer-Assisted ; Imaging, Three-Dimensional/*methods ; Microscopy, Fluorescence/*methods ; Microtubules/*ultrastructure ; Ultraviolet Rays
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  • 70
    Publication Date: 2010-08-14
    Description: Nanoelectronic devices offer substantial potential for interrogating biological systems, although nearly all work has focused on planar device designs. We have overcome this limitation through synthetic integration of a nanoscale field-effect transistor (nanoFET) device at the tip of an acute-angle kinked silicon nanowire, where nanoscale connections are made by the arms of the kinked nanostructure, and remote multilayer interconnects allow three-dimensional (3D) probe presentation. The acute-angle probe geometry was designed and synthesized by controlling cis versus trans crystal conformations between adjacent kinks, and the nanoFET was localized through modulation doping. 3D nanoFET probes exhibited conductance and sensitivity in aqueous solution, independent of large mechanical deflections, and demonstrated high pH sensitivity. Additionally, 3D nanoprobes modified with phospholipid bilayers can enter single cells to allow robust recording of intracellular potentials.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3149824/" 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/PMC3149824/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tian, Bozhi -- Cohen-Karni, Tzahi -- Qing, Quan -- Duan, Xiaojie -- Xie, Ping -- Lieber, Charles M -- 5DP1OD003900/OD/NIH HHS/ -- DP1 OD003900/OD/NIH HHS/ -- DP1 OD003900-04/OD/NIH HHS/ -- New York, N.Y. -- Science. 2010 Aug 13;329(5993):830-4. doi: 10.1126/science.1192033.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20705858" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biosensing Techniques/instrumentation/methods ; Cell Line ; Cells, Cultured ; Chick Embryo ; Electric Conductivity ; Electrophysiological Phenomena ; Equipment Design ; Hydrogen-Ion Concentration ; Lipid Bilayers ; Membrane Potentials ; Mice ; Microfluidics ; Myocytes, Cardiac/*physiology ; *Nanowires ; Sensitivity and Specificity ; Sodium Chloride ; *Transistors, Electronic
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  • 71
    Publication Date: 2010-09-18
    Description: Endosomal Toll-like receptors (TLRs) 7 and 9 recognize viral pathogens and induce signals leading to the activation of nuclear factor kappaB (NF-kappaB)-dependent proinflammatory cytokines and interferon regulatory factor 7 (IRF7)-dependent type I interferons (IFNs). Recognition of viral nucleic acids by TLR9 requires its cleavage in the endolysosomal compartment. Here, we show that TLR9 signals leading to the activation of type I IFN, but not proinflammatory cytokine genes, require TLR9 trafficking from endosomes to a specialized lysosome-related organelle. Furthermore, we identify adapter protein-3 as the protein complex responsible for the trafficking of TLR9 to this subcellular compartment. Our results reveal an intracellular mechanism for bifurcation of TLR9 signals by selective receptor trafficking within the endosomal system.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3063333/" 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/PMC3063333/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sasai, Miwa -- Linehan, Melissa M -- Iwasaki, Akiko -- AI054359/AI/NIAID NIH HHS/ -- AI064705/AI/NIAID NIH HHS/ -- AI081884/AI/NIAID NIH HHS/ -- R01 AI054359/AI/NIAID NIH HHS/ -- R01 AI054359-07/AI/NIAID NIH HHS/ -- R01 AI064705/AI/NIAID NIH HHS/ -- R01 AI064705-06/AI/NIAID NIH HHS/ -- R01 AI081884/AI/NIAID NIH HHS/ -- R01 AI081884-01A2/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2010 Sep 17;329(5998):1530-4. doi: 10.1126/science.1187029.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunobiology, 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/20847273" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Protein Complex 3/genetics/*metabolism ; Adaptor Protein Complex beta Subunits ; Animals ; Cells, Cultured ; Cytokines/genetics/immunology/metabolism ; Cytoplasmic Vesicles/metabolism ; Dendritic Cells/*immunology/metabolism ; Endosomes/metabolism ; Interferon Regulatory Factor-7/metabolism ; Interferon Type I/genetics/immunology/metabolism ; Lysosomal-Associated Membrane Protein 2/metabolism ; Macrophages/immunology ; Membrane Transport Proteins/metabolism ; Mice ; Mice, Inbred C57BL ; Myeloid Differentiation Factor 88/metabolism ; Oligodeoxyribonucleotides/immunology ; Protein Transport ; Recombinant Fusion Proteins/immunology/metabolism ; Signal Transduction ; TNF Receptor-Associated Factor 3/metabolism ; Toll-Like Receptor 9/immunology/*metabolism ; Transcriptional Activation ; Vesicle-Associated Membrane Protein 3/metabolism
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  • 72
    Publication Date: 2010-07-10
    Description: Long intergenic noncoding RNAs (lincRNAs) regulate chromatin states and epigenetic inheritance. Here, we show that the lincRNA HOTAIR serves as a scaffold for at least two distinct histone modification complexes. A 5' domain of HOTAIR binds polycomb repressive complex 2 (PRC2), whereas a 3' domain of HOTAIR binds the LSD1/CoREST/REST complex. The ability to tether two distinct complexes enables RNA-mediated assembly of PRC2 and LSD1 and coordinates targeting of PRC2 and LSD1 to chromatin for coupled histone H3 lysine 27 methylation and lysine 4 demethylation. Our results suggest that lincRNAs may serve as scaffolds by providing binding surfaces to assemble select histone modification enzymes, thereby specifying the pattern of histone modifications on target genes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2967777/" 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/PMC2967777/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsai, Miao-Chih -- Manor, Ohad -- Wan, Yue -- Mosammaparast, Nima -- Wang, Jordon K -- Lan, Fei -- Shi, Yang -- Segal, Eran -- Chang, Howard Y -- R01 CA118750/CA/NCI NIH HHS/ -- R01 CA119176/CA/NCI NIH HHS/ -- R01 CA119176-05/CA/NCI NIH HHS/ -- R01-CA118487/CA/NCI NIH HHS/ -- R01-HG004361/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Aug 6;329(5992):689-93. doi: 10.1126/science.1192002. Epub 2010 Jul 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20616235" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Carrier Proteins/metabolism ; Cell Line ; Cells, Cultured ; Chromatin/*metabolism ; Chromatin Immunoprecipitation ; Co-Repressor Proteins ; DNA-Binding Proteins/*metabolism ; HeLa Cells ; Histone Demethylases/*metabolism ; Histones/*metabolism ; Humans ; Methylation ; Mutation ; Nerve Tissue Proteins/metabolism ; Nuclear Proteins/metabolism ; Nucleic Acid Conformation ; Polycomb Repressive Complex 2 ; Polycomb-Group Proteins ; Promoter Regions, Genetic ; Protein Binding ; RNA Interference ; RNA, Untranslated/chemistry/*metabolism ; Repressor Proteins/*metabolism ; Transcription Factors/*metabolism ; Transcription, Genetic
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  • 73
    Publication Date: 2010-08-07
    Description: Although practiced clinically for more than 40 years, the use of hematopoietic stem cell (HSC) transplants remains limited by the ability to expand these cells ex vivo. An unbiased screen with primary human HSCs identified a purine derivative, StemRegenin 1 (SR1), that promotes the ex vivo expansion of CD34+ cells. Culture of HSCs with SR1 led to a 50-fold increase in cells expressing CD34 and a 17-fold increase in cells that retain the ability to engraft immunodeficient mice. Mechanistic studies show that SR1 acts by antagonizing the aryl hydrocarbon receptor (AHR). The identification of SR1 and AHR modulation as a means to induce ex vivo HSC expansion should facilitate the clinical use of HSC therapy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3033342/" 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/PMC3033342/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boitano, Anthony E -- Wang, Jian -- Romeo, Russell -- Bouchez, Laure C -- Parker, Albert E -- Sutton, Sue E -- Walker, John R -- Flaveny, Colin A -- Perdew, Gary H -- Denison, Michael S -- Schultz, Peter G -- Cooke, Michael P -- ES004869/ES/NIEHS NIH HHS/ -- ES007685/ES/NIEHS NIH HHS/ -- ES04699/ES/NIEHS NIH HHS/ -- P42 ES004699/ES/NIEHS NIH HHS/ -- P42 ES004699-24/ES/NIEHS NIH HHS/ -- R01 ES004869/ES/NIEHS NIH HHS/ -- R01 ES004869-23/ES/NIEHS NIH HHS/ -- R01 ES007685/ES/NIEHS NIH HHS/ -- R01 ES007685-11/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 2010 Sep 10;329(5997):1345-8. doi: 10.1126/science.1191536. Epub 2010 Aug 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20688981" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/analysis ; Antigens, CD34/analysis ; Aryl Hydrocarbon Hydroxylases/genetics/metabolism ; Cell Count ; Cell Lineage ; Cell Proliferation ; Cells, Cultured ; Cytochrome P-450 CYP1B1 ; Cytokines/pharmacology ; Glycoproteins/analysis ; Hematopoiesis ; *Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/cytology/drug effects/metabolism/*physiology ; Humans ; Mice ; Mice, Inbred NOD ; Mice, SCID ; Multipotent Stem Cells/cytology/drug effects/physiology ; Peptides/analysis ; Purines/*metabolism/*pharmacology ; Receptors, Aryl Hydrocarbon/*antagonists & inhibitors/metabolism ; Signal Transduction ; Small Molecule Libraries ; Species Specificity ; Tetrachlorodibenzodioxin/pharmacology
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  • 74
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-11-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2010 Nov 26;330(6008):1173. doi: 10.1126/science.330.6008.1173.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21109646" target="_blank"〉PubMed〈/a〉
    Keywords: Biotechnology/*economics ; Cells, Cultured ; *Commerce ; Embryonic Stem Cells/cytology/physiology ; Humans ; *Induced Pluripotent Stem Cells/cytology ; *Myocytes, Cardiac/cytology/physiology
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  • 75
    Publication Date: 2010-04-17
    Description: Cbln1, secreted from cerebellar granule cells, and the orphan glutamate receptor delta2 (GluD2), expressed by Purkinje cells, are essential for synapse integrity between these neurons in adult mice. Nevertheless, no endogenous binding partners for these molecules have been identified. We found that Cbln1 binds directly to the N-terminal domain of GluD2. GluD2 expression by postsynaptic cells, combined with exogenously applied Cbln1, was necessary and sufficient to induce new synapses in vitro and in the adult cerebellum in vivo. Further, beads coated with recombinant Cbln1 directly induced presynaptic differentiation and indirectly caused clustering of postsynaptic molecules via GluD2. These results indicate that the Cbln1-GluD2 complex is a unique synapse organizer that acts bidirectionally on both pre- and postsynaptic components.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsuda, Keiko -- Miura, Eriko -- Miyazaki, Taisuke -- Kakegawa, Wataru -- Emi, Kyoichi -- Narumi, Sakae -- Fukazawa, Yugo -- Ito-Ishida, Aya -- Kondo, Tetsuro -- Shigemoto, Ryuichi -- Watanabe, Masahiko -- Yuzaki, Michisuke -- New York, N.Y. -- Science. 2010 Apr 16;328(5976):363-8. doi: 10.1126/science.1185152.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, School of Medicine, Keio University, Tokyo 160-8582, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20395510" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Cell Line ; Cells, Cultured ; Cerebellum/cytology/*physiology ; Coculture Techniques ; Excitatory Postsynaptic Potentials ; Humans ; Ligands ; Mice ; Nerve Tissue Proteins/*metabolism ; Presynaptic Terminals/physiology ; Protein Binding ; Protein Interaction Domains and Motifs ; Protein Precursors/*metabolism ; Purkinje Cells/metabolism/*physiology ; Rats ; Receptors, Glutamate/chemistry/*metabolism ; Recombinant Fusion Proteins/metabolism ; Synapses/*physiology ; Synaptic Membranes/metabolism
    Print ISSN: 0036-8075
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  • 76
    Publication Date: 2010-10-30
    Description: The promyelocytic leukemia (PML) tumor suppressor is a pleiotropic modulator of apoptosis. However, the molecular basis for such a diverse proapoptotic role is currently unknown. We show that extranuclear Pml was specifically enriched at the endoplasmic reticulum (ER) and at the mitochondria-associated membranes, signaling domains involved in ER-to-mitochondria calcium ion (Ca(2+)) transport and in induction of apoptosis. We found Pml in complexes of large molecular size with the inositol 1,4,5-trisphosphate receptor (IP(3)R), protein kinase Akt, and protein phosphatase 2a (PP2a). Pml was essential for Akt- and PP2a-dependent modulation of IP(3)R phosphorylation and in turn for IP(3)R-mediated Ca(2+) release from ER. Our findings provide a mechanistic explanation for the pleiotropic role of Pml in apoptosis and identify a pharmacological target for the modulation of Ca(2+) signals.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3017677/" 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/PMC3017677/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giorgi, Carlotta -- Ito, Keisuke -- Lin, Hui-Kuan -- Santangelo, Clara -- Wieckowski, Mariusz R -- Lebiedzinska, Magdalena -- Bononi, Angela -- Bonora, Massimo -- Duszynski, Jerzy -- Bernardi, Rosa -- Rizzuto, Rosario -- Tacchetti, Carlo -- Pinton, Paolo -- Pandolfi, Pier Paolo -- GGP05284/Telethon/Italy -- K99 CA139009/CA/NCI NIH HHS/ -- K99 CA139009-01A1/CA/NCI NIH HHS/ -- K99 CA139009-02/CA/NCI NIH HHS/ -- R01 CA071692/CA/NCI NIH HHS/ -- R01 CA071692-04S1/CA/NCI NIH HHS/ -- R01 CA102142/CA/NCI NIH HHS/ -- R01 CA102142-07/CA/NCI NIH HHS/ -- R01 CA142874/CA/NCI NIH HHS/ -- R01 CA142874-01/CA/NCI NIH HHS/ -- R01 CA142874-02/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2010 Nov 26;330(6008):1247-51. doi: 10.1126/science.1189157. Epub 2010 Oct 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Experimental and Diagnostic Medicine, Section of General Pathology, Interdisciplinary Center for the Study of Inflammation (ICSI), Emilia Romagna Laboratory BioPharmaNet, and Laboratory for Technologies of Advanced Therapies (LTTA) University of Ferrara, Ferrara, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21030605" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Animals ; *Apoptosis ; Calcium/*metabolism ; *Calcium Signaling ; Cell Line ; Cell Nucleus/metabolism ; Cells, Cultured ; Cytosol/metabolism ; Endoplasmic Reticulum/*metabolism ; Homeostasis ; Humans ; Inositol 1,4,5-Trisphosphate/metabolism ; Inositol 1,4,5-Trisphosphate Receptors/metabolism ; Intracellular Membranes/metabolism ; Mice ; Mitochondria/metabolism ; Nuclear Proteins/genetics/*metabolism ; Phosphorylation ; Protein Phosphatase 2/metabolism ; Proto-Oncogene Proteins c-akt/metabolism ; Recombinant Fusion Proteins/metabolism ; Stress, Physiological ; Transcription Factors/genetics/*metabolism ; Tumor Suppressor Proteins/genetics/*metabolism
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  • 77
    Publication Date: 2010-02-13
    Description: Synaptic vesicle fusion in brain synapses occurs in phases that are either tightly coupled to action potentials (synchronous), immediately following action potentials (asynchronous), or as stochastic events in the absence of action potentials (spontaneous). Synaptotagmin-1, -2, and -9 are vesicle-associated Ca2+ sensors for synchronous release. Here we found that double C2 domain (Doc2) proteins act as Ca2+ sensors to trigger spontaneous release. Although Doc2 proteins are cytosolic, they function analogously to synaptotagmin-1 but with a higher Ca2+ sensitivity. Doc2 proteins bound to N-ethylmaleimide-sensitive factor attachment receptor (SNARE) complexes in competition with synaptotagmin-1. Thus, different classes of multiple C2 domain-containing molecules trigger synchronous versus spontaneous fusion, which suggests a general mechanism for synaptic vesicle fusion triggered by the combined actions of SNAREs and multiple C2 domain-containing proteins.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2846320/" 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/PMC2846320/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Groffen, Alexander J -- Martens, Sascha -- Diez Arazola, Rocio -- Cornelisse, L Niels -- Lozovaya, Natalia -- de Jong, Arthur P H -- Goriounova, Natalia A -- Habets, Ron L P -- Takai, Yoshimi -- Borst, J Gerard -- Brose, Nils -- McMahon, Harvey T -- Verhage, Matthijs -- MC_U105178795/Medical Research Council/United Kingdom -- U.1051.02.007(78795)/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2010 Mar 26;327(5973):1614-8. doi: 10.1126/science.1183765. Epub 2010 Feb 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Functional Genomics, CNCR, Neuroscience Campus Amsterdam, VU University and VU Medical Center, Amsterdam, 1081 HV, Netherlands. sander.groffen@cncr.vu.nl〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20150444" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Binding Sites ; Calcium/*metabolism ; Calcium-Binding Proteins/chemistry/genetics/*metabolism ; Cells, Cultured ; Excitatory Postsynaptic Potentials ; Hippocampus/cytology ; Inhibitory Postsynaptic Potentials ; Membrane Fusion ; Mice ; Mice, Knockout ; Mutant Proteins/genetics/metabolism ; Nerve Tissue Proteins/chemistry/genetics/*metabolism ; Neurons/physiology ; Neurotransmitter Agents/*metabolism ; Patch-Clamp Techniques ; Protein Structure, Tertiary ; Purkinje Cells/physiology ; Rats ; SNARE Proteins/metabolism ; *Synaptic Transmission ; Synaptic Vesicles/*physiology ; Synaptotagmin I/metabolism
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  • 78
    Publication Date: 2010-05-01
    Description: During lysosomal acidification, proton-pump currents are thought to be shunted by a chloride ion (Cl-) channel, tentatively identified as ClC-7. Surprisingly, recent data suggest that ClC-7 instead mediates Cl-/proton (H+) exchange. We generated mice carrying a point mutation converting ClC-7 into an uncoupled (unc) Cl- conductor. Despite maintaining lysosomal conductance and normal lysosomal pH, these Clcn7(unc/unc) mice showed lysosomal storage disease like mice lacking ClC-7. However, their osteopetrosis was milder, and they lacked a coat color phenotype. Thus, only some roles of ClC-7 Cl-/H+ exchange can be taken over by a Cl- conductance. This conductance was even deleterious in Clcn7(+/unc) mice. Clcn7(-/-) and Clcn7(unc/unc) mice accumulated less Cl- in lysosomes than did wild-type mice. Thus, lowered lysosomal chloride may underlie their common phenotypes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weinert, Stefanie -- Jabs, Sabrina -- Supanchart, Chayarop -- Schweizer, Michaela -- Gimber, Niclas -- Richter, Martin -- Rademann, Jorg -- Stauber, Tobias -- Kornak, Uwe -- Jentsch, Thomas J -- New York, N.Y. -- Science. 2010 Jun 11;328(5984):1401-3. doi: 10.1126/science.1188072.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Leibniz-Institut fur Molekulare Pharmakologie (FMP), 13125 Berlin, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20430974" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone and Bones/pathology ; Cells, Cultured ; Chloride Channels/genetics/*metabolism ; Chlorides/*metabolism ; Gene Knock-In Techniques ; Hair Color ; Hippocampus/pathology ; Hydrogen-Ion Concentration ; Lysosomal Storage Diseases/metabolism/pathology ; Lysosomes/*metabolism ; Membrane Potentials ; Membrane Proteins/genetics/metabolism ; Mice ; Mutant Proteins/metabolism ; Osteoclasts/metabolism/pathology ; Osteopetrosis/*metabolism/pathology ; Phenotype ; Point Mutation ; *Protons
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  • 79
    Publication Date: 2010-01-30
    Description: Cytosolic cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) often mediate antagonistic cellular actions of extracellular factors, from the regulation of ion channels to cell volume control and axon guidance. We found that localized cAMP and cGMP activities in undifferentiated neurites of cultured hippocampal neurons promote and suppress axon formation, respectively, and exert opposite effects on dendrite formation. Fluorescence resonance energy transfer imaging showed that alterations of the amount of cAMP resulted in opposite changes in the amount of cGMP, and vice versa, through the activation of specific phosphodiesterases and protein kinases. Local elevation of cAMP in one neurite resulted in cAMP reduction in all other neurites of the same neuron. Thus, local and long-range reciprocal regulation of cAMP and cGMP together ensures coordinated development of one axon and multiple dendrites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shelly, Maya -- Lim, Byung Kook -- Cancedda, Laura -- Heilshorn, Sarah C -- Gao, Hongfeng -- Poo, Mu-ming -- NS-22764/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2010 Jan 29;327(5965):547-52. doi: 10.1126/science.1179735.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20110498" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclase Inhibitors ; Adenylyl Cyclases/metabolism ; Animals ; Axons/metabolism/*physiology ; Cell Differentiation ; Cell Line ; Cell Polarity ; Cells, Cultured ; Cyclic AMP/*metabolism ; Cyclic AMP-Dependent Protein Kinases/antagonists & inhibitors/metabolism ; Cyclic GMP/*metabolism ; Dendrites/metabolism/*physiology ; Enzyme Inhibitors/pharmacology ; Fluorescence Resonance Energy Transfer ; Guanylate Cyclase/antagonists & inhibitors/metabolism ; Hippocampus/*cytology ; Humans ; Neurites/metabolism/physiology ; Neurons/cytology/*physiology ; Phosphodiesterase Inhibitors/pharmacology ; Phosphoric Diester Hydrolases/metabolism ; Phosphorylation ; Rats ; Signal Transduction ; Transfection
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  • 80
    Publication Date: 2010-09-11
    Description: Amyloid-beta (Abeta) peptides, derived from the amyloid precursor protein, and the microtubule-associated protein tau are key pathogenic factors in Alzheimer's disease (AD). How exactly they impair cognitive functions is unknown. We assessed the effects of Abeta and tau on axonal transport of mitochondria and the neurotrophin receptor TrkA, cargoes that are critical for neuronal function and survival and whose distributions are altered in AD. Abeta oligomers rapidly inhibited axonal transport of these cargoes in wild-type neurons. Lowering tau levels prevented these defects without affecting baseline axonal transport. Thus, Abeta requires tau to impair axonal transport, and tau reduction protects against Abeta-induced axonal transport defects.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3024010/" 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/PMC3024010/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vossel, Keith A -- Zhang, Kai -- Brodbeck, Jens -- Daub, Aaron C -- Sharma, Punita -- Finkbeiner, Steven -- Cui, Bianxiao -- Mucke, Lennart -- AG011385/AG/NIA NIH HHS/ -- C06 RR018928/RR/NCRR NIH HHS/ -- NS041787/NS/NINDS NIH HHS/ -- NS057906/NS/NINDS NIH HHS/ -- R00 NS057906/NS/NINDS NIH HHS/ -- R00 NS057906-05/NS/NINDS NIH HHS/ -- R01 AG011385/AG/NIA NIH HHS/ -- R01 AG011385-07/AG/NIA NIH HHS/ -- R01 NS041787/NS/NINDS NIH HHS/ -- R01 NS041787-09/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2010 Oct 8;330(6001):198. doi: 10.1126/science.1194653. Epub 2010 Sep 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gladstone Institute of Neurological Disease, San Francisco, CA 94158, USA. kvossel@gladstone.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20829454" target="_blank"〉PubMed〈/a〉
    Keywords: Amyloid beta-Peptides/*metabolism/pharmacology ; Animals ; *Axonal Transport ; Cells, Cultured ; Hippocampus/cytology ; Mice ; Mitochondria/metabolism ; Neurons/*metabolism ; Peptide Fragments/*metabolism/pharmacology ; Receptor, trkA/metabolism ; tau Proteins/*metabolism
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  • 81
    Publication Date: 2010-07-03
    Description: In early T cell development, progenitors retaining the potential to generate myeloid and natural killer lineages are eventually determined to a specific T cell lineage. The molecular mechanisms that drive this determination step remain unclarified. We show that, when murine hematopoietic progenitors were cultured on immobilized Notch ligand DLL4 protein in the presence of a cocktail of cytokines including interleukin-7, progenitors developing toward T cells were arrested and the arrested cells entered a self-renewal cycle, maintaining non-T lineage potentials. Reduced concentrations of interleukin-7 promoted T cell lineage determination. A similar arrest and self-renewal of progenitors were observed in thymocytes of mice deficient in the transcription factor Bcl11b. Our study thus identifies the earliest checkpoint during T cell development and shows that it is Bcl11b-dependent.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ikawa, Tomokatsu -- Hirose, Satoshi -- Masuda, Kyoko -- Kakugawa, Kiyokazu -- Satoh, Rumi -- Shibano-Satoh, Asako -- Kominami, Ryo -- Katsura, Yoshimoto -- Kawamoto, Hiroshi -- New York, N.Y. -- Science. 2010 Jul 2;329(5987):93-6. doi: 10.1126/science.1188995.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Lymphocyte Development, RIKEN Research Center for Allergy and Immunology, Yokohama 230-0045, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20595615" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Lineage ; Cells, Cultured ; Coculture Techniques ; Gene Expression Regulation, Developmental ; Gene Rearrangement, beta-Chain T-Cell Antigen Receptor ; Hematopoietic Stem Cells/cytology/*physiology ; Interleukin-7/metabolism ; Liver/embryology ; *Lymphopoiesis/genetics ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Precursor Cells, T-Lymphoid/cytology/*physiology ; Repressor Proteins/genetics/*metabolism ; Signal Transduction ; T-Lymphocytes/*cytology/*physiology ; Tumor Suppressor Proteins/genetics/*metabolism ; Up-Regulation
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  • 82
    Publication Date: 2010-06-19
    Description: In animal cells, the primary cilium transduces extracellular signals through signaling receptors localized in the ciliary membrane, but how these ciliary membrane proteins are retained in the cilium is unknown. We found that ciliary membrane proteins were highly mobile, but their diffusion was impeded at the base of the cilium by a diffusion barrier. Septin 2 (SEPT2), a member of the septin family of guanosine triphosphatases that form a diffusion barrier in budding yeast, localized at the base of the ciliary membrane. SEPT2 depletion resulted in loss of ciliary membrane protein localization and Sonic hedgehog signal transduction, and inhibited ciliogenesis. Thus, SEPT2 is part of a diffusion barrier at the base of the ciliary membrane and is essential for retaining receptor-signaling pathways in the primary cilium.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3092790/" 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/PMC3092790/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Qicong -- Milenkovic, Ljiljana -- Jin, Hua -- Scott, Matthew P -- Nachury, Maxence V -- Spiliotis, Elias T -- Nelson, W James -- GM089933/GM/NIGMS NIH HHS/ -- GM35527/GM/NIGMS NIH HHS/ -- R01 GM089933/GM/NIGMS NIH HHS/ -- R37 GM035527/GM/NIGMS NIH HHS/ -- R37 GM035527-27/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Jul 23;329(5990):436-9. doi: 10.1126/science.1191054. Epub 2010 Jun 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20558667" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axoneme/metabolism ; Cell Line ; Cells, Cultured ; Cilia/*metabolism/ultrastructure ; Cytoskeletal Proteins/*metabolism ; Diffusion ; Fluorescence Recovery After Photobleaching ; GTP-Binding Proteins/*metabolism ; Hedgehog Proteins/metabolism ; Membrane Proteins/*metabolism ; Mice ; RNA, Small Interfering ; Receptors, Cell Surface/metabolism ; Receptors, G-Protein-Coupled/metabolism ; Receptors, Serotonin/metabolism ; Receptors, Somatostatin/metabolism ; Septins ; *Signal Transduction ; Transfection
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  • 83
    Publication Date: 2010-05-22
    Description: Elevated leukocyte cell numbers (leukocytosis), and monocytes in particular, promote atherosclerosis; however, how they become increased is poorly understood. Mice deficient in the adenosine triphosphate-binding cassette (ABC) transporters ABCA1 and ABCG1, which promote cholesterol efflux from macrophages and suppress atherosclerosis in hypercholesterolemic mice, displayed leukocytosis, a transplantable myeloproliferative disorder, and a dramatic expansion of the stem and progenitor cell population containing Lin(-)Sca-1(+)Kit+ (LSK) in the bone marrow. Transplantation of Abca1(-/-) Abcg1(-/-) bone marrow into apolipoprotein A-1 transgenic mice with elevated levels of high-density lipoprotein (HDL) suppressed the LSK population, reduced leukocytosis, reversed the myeloproliferative disorder, and accelerated atherosclerosis. The findings indicate that ABCA1, ABCG1, and HDL inhibit the proliferation of hematopoietic stem and multipotential progenitor cells and connect expansion of these populations with leukocytosis and accelerated atherosclerosis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3032591/" 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/PMC3032591/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yvan-Charvet, Laurent -- Pagler, Tamara -- Gautier, Emmanuel L -- Avagyan, Serine -- Siry, Read L -- Han, Seongah -- Welch, Carrie L -- Wang, Nan -- Randolph, Gwendalyn J -- Snoeck, Hans W -- Tall, Alan R -- HL54591/HL/NHLBI NIH HHS/ -- R01 AG029626/AG/NIA NIH HHS/ -- R01 AI049653/AI/NIAID NIH HHS/ -- R01 AI049653-09/AI/NIAID NIH HHS/ -- R01 AI049653-10/AI/NIAID NIH HHS/ -- R01 AI061741/AI/NIAID NIH HHS/ -- R01 AI061741-03/AI/NIAID NIH HHS/ -- R01 AI061741-04/AI/NIAID NIH HHS/ -- R01A1061741/PHS HHS/ -- R01AG016327/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2010 Jun 25;328(5986):1689-93. doi: 10.1126/science.1189731. Epub 2010 May 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Medicine, Department of Medicine, Columbia University, New York, NY 10032, USA. ly2159@columbia.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20488992" target="_blank"〉PubMed〈/a〉
    Keywords: ATP Binding Cassette Transporter 1 ; ATP-Binding Cassette Transporters/genetics/*metabolism ; Animals ; Apolipoprotein A-I/genetics/metabolism ; Atherosclerosis/metabolism/*physiopathology/therapy ; Bone Marrow Transplantation ; Cell Proliferation ; Cells, Cultured ; Cholesterol/*metabolism ; Hematopoietic Stem Cells/*physiology ; Hypercholesterolemia/metabolism ; Leukocytosis/metabolism/*physiopathology/therapy ; Lipoproteins/genetics/*metabolism ; Lipoproteins, HDL/*metabolism ; Macrophages/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Inbred DBA ; Mice, Transgenic ; Multipotent Stem Cells/physiology ; Myeloid Progenitor Cells/*physiology ; Myeloproliferative Disorders/metabolism/physiopathology/therapy ; Phenotype ; Receptors, Granulocyte-Macrophage Colony-Stimulating Factor/metabolism ; Receptors, Interleukin-3/metabolism ; Signal Transduction
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  • 84
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-11-11
    Description: When injected into mice, the synthetic double-stranded polynucleotide poly(inosinic) X poly(cytidylic) acid induces high natural killer (NK) cell activity within 4 to 12 hours. Induction of NK activity in mice immunized 2 or 3 days previously, or the addition of NK cells to cultures immunized in vitro 2 or 3 days previously, promotes early termination of the ongoing primary immunoglobulin M antibody response. A target for NK cells is a population of accessory cells that has interacted with antigen and is necessary for sustaining the antibody response. The inference is strong that NK cells induced normally by immunization also terminate the usual antibody response in vivo by elimination of antigen-exposed accessory cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abruzzo, L V -- Rowley, D A -- 5-T32-CA-09267/CA/NCI NIH HHS/ -- R01-10242/PHS HHS/ -- New York, N.Y. -- Science. 1983 Nov 11;222(4624):581-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6685343" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibody Formation ; Antibody-Producing Cells/immunology ; Cells, Cultured ; Homeostasis ; Killer Cells, Natural/*immunology/radiation effects ; Lymphocyte Cooperation ; Lymphocytes/*immunology ; Mice ; Poly I-C/immunology ; Spleen/immunology
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  • 85
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-04-22
    Description: The human parasite Trypanosoma brucei gambiense grew continuously at 37 degrees C in primary cultures of murine bone marrow. Cultured parasites remained virulent for mice. Rapid parasite growth coincided with the appearance of adherent adipocyte-epitheloid cell aggregates that also promoted hematopoiesis. This culture system should permit studies of host cell control of trypanosome proliferation, pathogenic effects of trypanosomes on blood cell development, and the relative trypanocidal and marrow suppressive activities of drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balber, A E -- CA 14049/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Apr 22;220(4595):421-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836284" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bone Marrow ; Cells, Cultured ; Culture Media ; Humans ; Mice ; Mice, Inbred BALB C ; Trypanosoma brucei brucei/growth & development ; Trypanosoma brucei gambiense/*growth & development ; Trypanosomiasis, African/parasitology
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  • 86
    Publication Date: 1983-03-18
    Description: Immunohistochemical techniques were used to confirm biochemical evidence that parenchymal cells isolated from adult rat liver and maintained in nonreplicating monolayer culture for 2 days synthesized type IV basement membrane collagen. On continued incubation in serum-free medium, the hepatocytes also synthesized the interstitial collagens, types I and III. Consistent with these results in culture, type IV collagen was localized to the hepatocytes in slices of pathologic rat liver. Hence collagen formation is a previously unrecognized function of the hepatocyte that may be important in the pathogenesis of liver fibrosis or cirrhosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diegelmann, R F -- Guzelian, P S -- Gay, R -- Gay, S -- AM18976/AM/NIADDK NIH HHS/ -- DE02570/DE/NIDCR NIH HHS/ -- HL11310/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Mar 18;219(4590):1343-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828863" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basement Membrane/metabolism ; Cells, Cultured ; Collagen/*biosynthesis/immunology ; Liver/cytology/*metabolism ; Molecular Weight ; Rats
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  • 87
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-12-09
    Description: Nonmalignant diploid human fibroblast cells (GM3498B) derived from a skin biopsy of a patient with Bloom's syndrome have been transformed by transfection with DNA from a tumorigenic mouse cell line (Ha-8) carrying a single copy of the Harvey murine sarcoma virus (Ha-MuSV) genome. The transformed cell lines have an extended life-span, form colonies in agarose, and proliferate in nude mice--characteristics of neoplastic transformation. Like the parental cells, they also exhibit a high spontaneous level of sister chromatid exchanges. Finally, the transformed cells contain most, if not all, of the Ha-MuSV genome as well as the human rasH sequence. These experiments show that these diploid nonmalignant human cells can be used as recipients in transfection experiments for studying the genetic control of neoplastic transformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doniger, J -- Di Paolo, J A -- Popescu, N C -- New York, N.Y. -- Science. 1983 Dec 9;222(4628):1144-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6648529" target="_blank"〉PubMed〈/a〉
    Keywords: Bloom Syndrome/*genetics ; Cell Adhesion ; *Cell Transformation, Neoplastic ; Cells, Cultured ; DNA, Neoplasm/*genetics ; Humans ; Oncogenes ; Transfection
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  • 88
    Publication Date: 1983-04-08
    Description: Cultured bronchial epithelial and fibroblastic cells from humans were used to study DNA damage and toxicity caused by formaldehyde. Formaldehyde caused the formation of cross-links between DNA and proteins, caused single-strand breaks in DNA, and inhibited the resealing of single-strand breaks produced by ionizing radiation. Formaldehyde also inhibited the unscheduled DNA synthesis that occurs after exposure of cells to ultraviolet irradiation or to benzo[a]pyrene diolexpoxide but at doses substantially higher than those required to inhibit the resealing of x-ray-induced single-strand breaks. Therefore, formaldehyde could exert its mutagenic and carcinogenic effects by both damaging DNA and inhibiting DNA repair.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grafstrom, R C -- Fornace, A J Jr -- Autrup, H -- Lechner, J F -- Harris, C C -- New York, N.Y. -- Science. 1983 Apr 8;220(4593):216-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828890" target="_blank"〉PubMed〈/a〉
    Keywords: Bronchi/*cytology/drug effects ; Cells, Cultured ; *DNA/biosynthesis ; DNA Repair/*drug effects ; Epithelium/drug effects ; Fibroblasts/drug effects ; Formaldehyde/*pharmacology ; Humans
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  • 89
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-10-07
    Description: Suspensions of embryonic chick neuronal cells adhered to monolayers of glial cells, but few neurons bound to control monolayers of fibroblastic cells from meninges or skin. Neuronal cell-glial cell adhesion was inhibited by prior incubation of the neurons with Fab' fragments of antibodies to neuronal membranes. In contrast, antibodies to the neural cell adhesion molecule (N-CAM) did not inhibit the binding. These results suggest that a specific adhesive mechanism between neurons and glial cells exists and that it is mediated by CAM's that differ from those so far identified.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grumet, M -- Rutishauser, U -- Edelman, G M -- AI-11378/AI/NIAID NIH HHS/ -- HD-09635/HD/NICHD NIH HHS/ -- HD-16550/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Oct 7;222(4619):60-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6194561" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Antigen-Antibody Complex ; *Cell Adhesion ; Cell Membrane/immunology ; Cells, Cultured ; Chick Embryo ; Epitopes ; Immunoglobulin Fab Fragments ; Neuroglia/*physiology ; Neurons/immunology/*physiology
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  • 90
    Publication Date: 1983-09-23
    Description: Evidence is presented that a tumor-derived transforming growth factor is responsible for stimulating bone resorption and causing hypercalcemia in an animal tumor model of the hypercalcemia of malignancy. Both conditioned medium harvested from cultured tumor cells and tumor extracts of the transplantable rat Leydig cell tumor associated with hypercalcemia contained a macromolecular bone resorbing factor with the chemical characteristics of a tumor-derived transforming growth factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ibbotson, K J -- D'Souza, S M -- Ng, K W -- Osborne, C K -- Niall, M -- Martin, T J -- Mundy, G R -- AM-28149/AM/NIADDK NIH HHS/ -- CA-29537/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1292-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6577602" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bone Resorption ; Calcium ; Cells, Cultured ; Culture Media ; Growth Substances/*physiology ; Hypercalcemia/*etiology ; Leydig Cell Tumor/complications/*physiopathology ; Male ; Neoplasm Proteins/*physiology ; Neoplasms, Experimental/complications/physiopathology ; Peptides/*physiology ; Rats ; Transforming Growth Factors
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  • 91
    Publication Date: 1983-04-01
    Description: The tissue culture condition that is required for the type of chromosome breakage seen at most fragile sites, namely, the absence of folic acid and thymidine in the medium, greatly enhanced micronucleus formation in proliferating lymphocyte cultures from normal individuals. This suggests that chromosome breakage at fragile sites and the apparently spontaneous damage that gives rise to micronuclei are controlled by the same mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacky, P B -- Beek, B -- Sutherland, G R -- New York, N.Y. -- Science. 1983 Apr 1;220(4592):69-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828880" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Cell Nucleus/drug effects/ultrastructure ; Cells, Cultured ; Child ; *Chromosome Aberrations ; Chromosome Fragile Sites ; *Chromosome Fragility ; Culture Media ; Dose-Response Relationship, Drug ; Female ; Folic Acid/pharmacology ; Humans ; Lymphocytes/ultrastructure ; Male ; Middle Aged ; Thymidine/pharmacology
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  • 92
    Publication Date: 1983-09-23
    Description: When cultured in a hypoxic environment similar to that found in the center of a wound, macrophages secreted active angiogenesis factor into the medium. Under conditions similar to those of well-oxygenated tissue, macrophages did not secrete active angiogenesis factor. Macrophages that secreted the factor at hypoxic conditions stopped secreting it when returned to room air. Thus the control of angiogenesis in wound healing may be the result of macrophages responding to tissue oxygen tension without the necessity of interacting with other cell types or biochemical signals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knighton, D R -- Hunt, T K -- Scheuenstuhl, H -- Halliday, B J -- Werb, Z -- Banda, M J -- GM27345/GM/NIGMS NIH HHS/ -- HL26323/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1283-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612342" target="_blank"〉PubMed〈/a〉
    Keywords: Angiogenesis Inducing Agents/*biosynthesis ; Animals ; Anoxia/physiopathology ; Cells, Cultured ; Cornea ; Growth Substances/*biosynthesis ; Macrophages/*physiology ; Models, Biological ; Oxygen/*physiology ; Rabbits ; *Wound Healing
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  • 93
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-02-04
    Description: The distribution of keratin intermediate filaments, previously considered static in organization and imperturbable by conventional drugs used to alter the structure and organization of the cytoskeleton, can be altered significantly by treatment with colchicine and cytochalasin D. The loss of microfilaments and microtubules converts the keratin cytoskeleton from a branching, even distribution to a series of starlike structures whose filaments are maintained by multiple membrane attachment sites. These findings provide a means for manipulating cytokeratin organization to investigate the role of keratins in cytoskeletal structure and function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knapp, L W -- O'Guin, W M -- Sawyer, R H -- New York, N.Y. -- Science. 1983 Feb 4;219(4584):501-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6186022" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Colchicine/*pharmacology ; Cytochalasin D ; Cytochalasins/*pharmacology ; Cytoskeleton/*drug effects ; Epithelium ; *Keratins ; Mice ; Microtubules/drug effects
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  • 94
    Publication Date: 1983-11-11
    Description: Endothelial cells from human blood vessels were cultured in vitro, with doubling times of 17 to 21 hours for 42 to 79 population doublings. Cloned human endothelial cell strains were established for the first time and had similar proliferative capacities. This vigorous cell growth was achieved by addition of heparin to culture medium containing reduced concentrations of endothelial cell growth factor. The routine cloning and long-term culture of human endothelial cells will facilitate studying the human endothelium in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thornton, S C -- Mueller, S N -- Levine, E M -- AG-00839/AG/NIA NIH HHS/ -- T32-CA-09171/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 11;222(4624):623-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6635659" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Division/drug effects ; Cells, Cultured ; Clone Cells/enzymology ; Endothelium/*cytology ; Growth Substances/pharmacology ; Heparin/*pharmacology ; Humans ; Time Factors
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  • 95
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-05-27
    Description: Parasympathetic neurons, when cultured alone, lose sensitivity to acetylcholine, but if striated muscle is included in the culture, neuronal chemosensitivity is maintained. The membrane remnants of myotubes ruptured by osmotic shock also supported the responsiveness of the cultured neurons to transmitter, whereas muscle-conditioned medium or membrane remnants of nonmuscle embryonic skin cells did not support this responsiveness. The regulation of chemosensitivity by contact of neurons with the target cell membrane may be important in the formation and maintenance of neuronal circuitry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tuttle, J B -- NS-10338/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 May 27;220(4600):977-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6133352" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/physiology ; Animals ; Cell Membrane/physiology ; Cells, Cultured ; Chick Embryo ; Fibroblasts/physiology ; Muscles/*physiology ; Nervous System/growth & development ; Neurons/*physiology ; Neurotransmitter Agents/*physiology ; Synapses/physiology
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  • 96
    Publication Date: 1983-10-28
    Description: A protoplast fusion method was developed to stably transfect human cells with pSV2-derived plasmids at frequencies greater than 10(-3). This procedure made it possible to test the biological effect of a hepatitis B virus (HBV) gene independent of the viral structures required for infection. A pSV2gpt+ plasmid constructed to carry a subgenomic fragment of HBV that contained the core antigen gene (HBc gene) was transfected into human cells. A human epithelial cell line was stably transfected with the HBc+ gene by selecting recipient cells for expression of guanine phosphoribosyl transferase expression. With this gpt+/HBc+ cell line it was shown that growth in serum-free medium or treatment with 5'-azacytidine stimulates the production of the HBV core antigen. A hepatocellular carcinoma carrying the entire HBV genome was stimulated to produce the HBc gene product in response to the same factors that stimulated HBcAg production in the gpt+/HBc+ cell line constructed by transfection. The temporal relation between the cytopathologic response and HBc gene expression was similar for both cell types, indicating a primary role for HBc gene expression in the cytopathology of HBV-infected human liver.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yoakum, G H -- Korba, B E -- Lechner, J F -- Tokiwa, T -- Gazdar, A F -- Seeley, T -- Siegel, M -- Leeman, L -- Autrup, H -- Harris, C C -- New York, N.Y. -- Science. 1983 Oct 28;222(4622):385-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6194563" target="_blank"〉PubMed〈/a〉
    Keywords: Azacitidine/pharmacology ; Cell Fusion ; *Cell Transformation, Viral ; Cells, Cultured ; Cytopathogenic Effect, Viral ; Gene Expression Regulation/drug effects ; Genes, Viral ; Hepatitis B Core Antigens/*genetics ; Humans ; Transfection
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  • 97
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-01-21
    Description: Highly purified preparations of insulin receptor catalyzed the phosphorylation of the 95,000-dalton subunit of the insulin receptor. This subunit of the insulin receptor was also labeled with [alpha-32P]8-azidoadenosine 5'-triphosphate, a photoaffinity label for adenosine triphosphate binding sites. The identity of the 95,000-dalton band was confirmed in both cases by precipitation with a monoclonal antibody to the insulin receptor. These results suggest that the insulin receptor is itself a protein kinase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roth, R A -- Cassell, D J -- New York, N.Y. -- Science. 1983 Jan 21;219(4582):299-301.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6849137" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Cell Line ; Cells, Cultured ; Lymphocytes ; Molecular Weight ; Phosphoproteins/physiology ; Protein Kinases/*physiology ; Receptor, Insulin/*physiology
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  • 98
    Publication Date: 1984-01-13
    Description: Cultures of human diploid fibroblasts contain cells that respond to exposure to the first component of complement (C1) by initiating DNA synthesis and growth. The plasma membranes of these cells have specific binding sites for the C1q subcomponent of C1. A fluorescence-activated cell sorter was used to isolate a subset of cells with a high affinity for C1q, and the growth and synthesis activities of these high-affinity cells were studied after numerous replications in vitro. These cells synthesize DNA and grow faster than the parent cultures and low-affinity cells, and they produce two to three times as much protein. About 40 percent of their total protein synthesis activity is directed to collagen production, unusually high proportions of collagen types III and V being produced. These properties and the high affinity of the cells for C1q are retained for at least six cell transfers. This phenotype has the properties expected of fibroblasts in healing wounds and inflamed tissues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bordin, S -- Page, R C -- Narayanan, A S -- DE-02600/DE/NIDCR NIH HHS/ -- DE-03301/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 1984 Jan 13;223(4632):171-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6691142" target="_blank"〉PubMed〈/a〉
    Keywords: *Antigens, CD44 ; Carrier Proteins ; Cell Division ; Cell Separation ; Cells, Cultured ; Collagen/*biosynthesis/classification ; DNA/*biosynthesis ; Fibroblasts/analysis/cytology/*physiology ; Flow Cytometry ; Gingiva ; Humans ; *Membrane Glycoproteins ; Mitochondrial Proteins ; Phenotype ; *Protein Biosynthesis ; Receptors, Complement/*analysis
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  • 99
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1983-01-14
    Description: Two plasmids containing nonoverlapping deletions of the herpes simplex virus thymidine kinase gene were introduced into thymidine kinase-deficient mouse L cells by DNA-mediated gene transfer. Thymidine kinase-producing transformants were generated by a mixture of the two plasmids at a frequency significantly greater than that generated by either plasmid alone. Southern blot analyses demonstrated that functional thymidine kinase genes were generated by homologous recombination between the two deletion mutants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Small, J -- Scangos, G -- New York, N.Y. -- Science. 1983 Jan 14;219(4581):174-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6294829" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cells, Cultured ; Chromosome Deletion ; *Genetic Engineering ; Mice ; Mutation ; *Plasmids ; *Recombination, Genetic ; Simplexvirus ; Thymidine Kinase/*genetics
    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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  • 100
    Publication Date: 1983-08-26
    Description: Macrophages isolated from tumor-bearing patients as well as cultured human monocytes express Fc receptors that cross-react strongly with murine immunoglobulins of the G2a but only slightly or not at all with the G1, G2b, or G3 subclasses. Such macrophages in the presence of murine immunoglobulin G2a monoclonal antibodies to tumors mediated the killing of tumor cells in vitro. These data suggest that monoclonal antibodies of the G2a subclass may be useful in the immunotherapy of human cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steplewski, Z -- Lubeck, M D -- Koprowski, H -- CA-10815/CA/NCI NIH HHS/ -- CA-21124/CA/NCI NIH HHS/ -- CA-25874/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Aug 26;221(4613):865-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879183" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/*immunology ; Cells, Cultured ; Cytotoxicity, Immunologic ; Humans ; *Immunity, Cellular ; Immunoglobulin G/immunology ; Immunotherapy ; Macrophages/*immunology ; Mice ; Monocytes/immunology ; Neoplasms, Experimental/immunology/therapy ; Receptors, Fc/*immunology ; Species Specificity
    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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