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  • Cell Line  (2,037)
  • American Association for the Advancement of Science (AAAS)  (2,037)
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  • 1
    Publication Date: 2002-04-16
    Description: Natural killer (NK) cells express inhibitory receptors for major histocompatibility complex (MHC) class I antigens, preventing attack against healthy cells. Mouse cytomegalovirus (MCMV) encodes an MHC-like protein (m157) that binds to an inhibitory NK cell receptor in certain MCMV-susceptible mice. In MCMV-resistant mice, this viral protein engages a related activating receptor (Ly49H) and confers host protection. These activating and inhibitory receptors are highly homologous, suggesting the possibility that one evolved from the other in response to selective pressure imposed by the pathogen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arase, Hisashi -- Mocarski, Edward S -- Campbell, Ann E -- Hill, Ann B -- Lanier, Lewis L -- AI30363/AI/NIAID NIH HHS/ -- CA89294/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2002 May 17;296(5571):1323-6. Epub 2002 Apr 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology and the Cancer Research Institute, University of California San Francisco, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11950999" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Antigens, Ly/chemistry/genetics/*immunology/metabolism ; Cell Line ; Coculture Techniques ; Disease Susceptibility ; Evolution, Molecular ; Herpesviridae Infections/*immunology ; Histocompatibility Antigens Class I/immunology ; Hybridomas ; Immunity, Innate ; Interferon-gamma/biosynthesis ; Killer Cells, Natural/*immunology ; Lectins, C-Type ; Ligands ; Lymphocyte Activation ; Membrane Glycoproteins/chemistry/genetics/*immunology/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Muromegalovirus/genetics/*immunology/metabolism ; NK Cell Lectin-Like Receptor Subfamily A ; Protein Binding ; Receptors, Immunologic/chemistry/genetics/*immunology/metabolism ; Receptors, NK Cell Lectin-Like ; Recombinant Fusion Proteins/metabolism ; Transfection ; Viral Proteins/chemistry/genetics/*immunology/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2002-02-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogelstein, Bert -- Alberts, Bruce -- Shine, Kenneth -- New York, N.Y. -- Science. 2002 Feb 15;295(5558):1237.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Kimmel Cancer Center at Johns Hopkins University, Baltimore, MD 21231, USA. vogelbe@welch.jhu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11847324" target="_blank"〉PubMed〈/a〉
    Keywords: Bioethical Issues ; Cell Line ; *Cloning, Organism/legislation & jurisprudence ; Embryo Research ; Embryo, Mammalian/*cytology ; Humans ; *Nuclear Transfer Techniques ; *Stem Cells ; *Terminology as Topic ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2002-12-10
    Description: The formation and patterning of mesoderm during mammalian gastrulation require the activity of Nodal, a secreted mesoderm-inducing factor of the transforming growth factor-beta (TGF-beta) family. Here we show that the transcriptional corepressor DRAP1 has a very specific role in regulation of Nodal activity during mouse embryogenesis. We find that loss of Drap1 leads to severe gastrulation defects that are consistent with increased expression of Nodal and can be partially suppressed by Nodal heterozygosity. Biochemical studies indicate that DRAP1 interacts with and inhibits DNA binding by the winged-helix transcription factor FoxH1 (FAST), a critical component of a positive feedback loop for Nodal activity. We propose that DRAP1 limits the spread of a morphogenetic signal by down-modulating the response to the Nodal autoregulatory loop.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iratni, Rabah -- Yan, Yu-Ting -- Chen, Canhe -- Ding, Jixiang -- Zhang, Yi -- Price, Sandy M -- Reinberg, Danny -- Shen, Michael M -- New York, N.Y. -- Science. 2002 Dec 6;298(5600):1996-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Biochemistry, Division of Nucleic Acids Enzymology, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12471260" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Cell Line ; Crosses, Genetic ; DNA/metabolism ; DNA-Binding Proteins/metabolism ; *Embryonic and Fetal Development ; Female ; Forkhead Transcription Factors ; Gastrula/*physiology ; Gene Expression Regulation, Developmental ; Gene Targeting ; Heterozygote ; In Situ Hybridization ; Left-Right Determination Factors ; Male ; Mesoderm/cytology/physiology ; Mice ; Morphogenesis ; Mutation ; Nodal Protein ; Phenotype ; Protein Binding ; RNA Interference ; Recombinant Fusion Proteins/metabolism ; Repressor Proteins/genetics/*metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; *Signal Transduction ; Transcription Factors/metabolism ; Transforming Growth Factor beta/genetics/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2002-12-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gallo, Robert C -- New York, N.Y. -- Science. 2002 Nov 29;298(5599):1728-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Human Virology and Department of Microbiology and Immunology, University of Maryland, Baltimore, MD 21201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12459576" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Serodiagnosis/history ; Acquired Immunodeficiency Syndrome/diagnosis/*history/immunology/virology ; CD4-Positive T-Lymphocytes/virology ; Cell Line ; Cells, Cultured ; France ; *HIV/classification/isolation & purification/physiology ; History, 20th Century ; Human T-lymphotropic virus 1/isolation & purification/physiology ; Human T-lymphotropic virus 2/isolation & purification/physiology ; Humans ; Interleukin-2/history/isolation & purification/physiology ; Patents as Topic/history ; RNA-Directed DNA Polymerase/history/isolation & purification/metabolism ; United States ; Virus Cultivation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2003-04-26
    Description: The active-site cysteine of peroxiredoxins is selectively oxidized to cysteine sulfinic acid during catalysis, which leads to inactivation of peroxidase activity. This oxidation was thought to be irreversible. However, by metabolic labeling of mammalian cells with 35S, we show that the sulfinic form of peroxiredoxin I, produced during the exposure of cells to H2O2, is rapidly reduced to the catalytically active thiol form. The mammalian cells' ability to reduce protein sulfinic acid might serve as a mechanism to repair oxidatively damaged proteins or represent a new type of cyclic modification by which the function of various proteins is regulated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woo, Hyun Ae -- Chae, Ho Zoon -- Hwang, Sung Chul -- Yang, Kap-Seok -- Kang, Sang Won -- Kim, Kanghwa -- Rhee, Sue Goo -- New York, N.Y. -- Science. 2003 Apr 25;300(5619):653-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Cell Signaling Research and Division of Molecular Life Sciences, Ewha Womans University, Seoul 120-750, Korea.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12714748" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Catalysis ; Cell Line ; Cycloheximide/pharmacology ; Cysteine/*analogs & derivatives/*metabolism ; Dimerization ; HeLa Cells ; Humans ; Hydrogen Peroxide/*metabolism ; Methionine/metabolism ; Mice ; Neurotransmitter Agents ; Oxidation-Reduction ; Peroxidases/chemistry/*metabolism ; Peroxiredoxins ; Protein Synthesis Inhibitors/pharmacology ; Spectrometry, Mass, Electrospray Ionization ; Sulfhydryl Compounds/metabolism ; Sulfinic Acids/metabolism ; Tumor Cells, Cultured
    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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  • 6
    Publication Date: 2003-01-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rajagopal, Jayaraj -- Anderson, William J -- Kume, Shoen -- Martinez, Olga I -- Melton, Douglas A -- New York, N.Y. -- Science. 2003 Jan 17;299(5605):363.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12532008" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/immunology ; Apoptosis ; Cell Differentiation ; Cell Line ; Embryo, Mammalian/*cytology ; Humans ; Insulin/*analysis/genetics/immunology/*metabolism ; Islets of Langerhans/*cytology/metabolism ; Mice ; Microscopy, Confocal ; RNA, Messenger/genetics/metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Stem Cells/*cytology/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2003-08-09
    Description: Alternative pre-messenger RNA splicing is an important mechanism for generating protein diversity and may explain in part how mammalian complexity arises from a surprisingly small complement of genes. Here, we describe "digital polony exon profiling,"a single molecule-based technology for studying complex alternative pre-messenger RNA splicing. This technology allows researchers to monitor the combinatorial diversity of exon inclusion in individual transcripts. A minisequencing strategy provides single nucleotide resolution, and the digital nature of the technology allows quantitation of individual splicing variants. Digital polony exon profiling can be used to investigate the physiological and pathological roles of alternately spliced messenger RNAs, as well as the mechanisms by which these messenger RNAs are produced.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhu, Jun -- Shendure, Jay -- Mitra, Robi D -- Church, George M -- 5U54GM62119/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2003 Aug 8;301(5634):836-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12907803" target="_blank"〉PubMed〈/a〉
    Keywords: Acrylamide ; *Alternative Splicing ; Animals ; Antigens, CD44/genetics ; Brain/metabolism ; Cell Line ; Cell Line, Transformed ; Cyclic AMP Response Element-Binding Protein ; *Exons ; Humans ; Mice ; Microtubule-Associated Proteins/genetics ; Nerve Tissue Proteins/genetics ; Polymerase Chain Reaction/*methods ; Polymorphism, Single Nucleotide ; Protein Isoforms ; RNA Precursors/*genetics/metabolism ; RNA-Binding Proteins ; SMN Complex Proteins
    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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  • 8
    Publication Date: 1998-12-16
    Description: A peripheral membrane protein that is interactive with lymphocytic choriomeningitis virus (LCMV) was purified from cells permissive to infection. Tryptic peptides from this protein were determined to be alpha-dystroglycan (alpha-DG). Several strains of LCMV and other arenaviruses, including Lassa fever virus (LFV), Oliveros, and Mobala, bound to purified alpha-DG protein. Soluble alpha-DG blocked both LCMV and LFV infection. Cells bearing a null mutation of the gene encoding DG were resistant to LCMV infection, and reconstitution of DG expression in null mutant cells restored susceptibility to LCMV infection. Thus, alpha-DG is a cellular receptor for both LCMV and LFV.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cao, W -- Henry, M D -- Borrow, P -- Yamada, H -- Elder, J H -- Ravkov, E V -- Nichol, S T -- Compans, R W -- Campbell, K P -- Oldstone, M B -- AG 00080/AG/NIA NIH HHS/ -- AI 09484/AI/NIAID NIH HHS/ -- DK09712/DK/NIDDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):2079-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Virology, Department of Neuropharmacology, 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/9851928" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Arenavirus/metabolism ; Cell Line ; Cytoskeletal Proteins/chemistry/genetics/*metabolism ; Dystroglycans ; Lassa virus/*metabolism/physiology ; Lymphocytic choriomeningitis virus/*metabolism/physiology ; Membrane Glycoproteins/chemistry/genetics/*metabolism ; Mice ; Molecular Sequence Data ; Mutation ; Receptors, Virus/chemistry/*metabolism ; Recombinant Fusion Proteins/metabolism ; Virus Replication
    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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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-02-07
    Description: The Son of Sevenless (Sos) proteins control receptor-mediated activation of Ras by catalyzing the exchange of guanosine diphosphate for guanosine triphosphate on Ras. The NH2-terminal region of Sos contains a Dbl homology (DH) domain in tandem with a pleckstrin homology (PH) domain. In COS-1 cells, the DH domain of Sos stimulated guanine nucleotide exchange on Rac but not Cdc42 in vitro and in vivo. The tandem DH-PH domain of Sos (DH-PH-Sos) was defective in Rac activation but regained Rac stimulating activity when it was coexpressed with activated Ras. Ras-mediated activation of DH-PH-Sos did not require activation of mitogen-activated protein kinase but it was dependent on activation of phosphoinositide 3-kinase. These results reveal a potential mechanism for coupling of Ras and Rac signaling pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nimnual, A S -- Yatsula, B A -- Bar-Sagi, D -- CA09176/CA/NCI NIH HHS/ -- CA28146/CA/NCI NIH HHS/ -- CA55360/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Jan 23;279(5350):560-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Microbiology, State University of New York at Stony Brook, Stony Brook, NY 11794, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9438849" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Animals ; COS Cells ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cell Cycle Proteins/metabolism ; Cell Line ; Cell Membrane/ultrastructure ; Enzyme Activation ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Proteins/*metabolism ; Guanine Nucleotide Exchange Factors ; Guanosine Diphosphate/metabolism ; Guanosine Triphosphate/metabolism ; Humans ; JNK Mitogen-Activated Protein Kinases ; Membrane Proteins/chemistry/*metabolism ; *Mitogen-Activated Protein Kinases ; Proteins/metabolism ; Proto-Oncogene Proteins ; Recombinant Fusion Proteins/metabolism ; Retroviridae Proteins, Oncogenic/chemistry ; Signal Transduction ; Son of Sevenless Proteins ; Transfection ; cdc42 GTP-Binding Protein ; rac GTP-Binding Proteins ; ras Guanine Nucleotide Exchange Factors ; ras Proteins/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-08-28
    Description: Control of the activation of apoptosis is important both in development and in protection against cancer. In the classic genetic model Caenorhabditis elegans, the pro-apoptotic protein CED-4 activates the CED-3 caspase and is inhibited by the Bcl-2-like protein CED-9. Both processes are mediated by protein-protein interaction. Facilitating the proximity of CED-3 zymogen molecules was found to induce caspase activation and cell death. CED-4 protein oligomerized in cells and in vitro. This oligomerization induced CED-3 proximity and competed with CED-4:CED-9 interaction. Mutations that abolished CED-4 oligomerization inactivated its ability to activate CED-3. Thus, the mechanism of control is that CED-3 in CED-3:CED-4 complexes is activated by CED-4 oligomerization, which is inhibited by binding of CED-9 to CED-4.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, X -- Chang, H Y -- Baltimore, D -- CA51462/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Aug 28;281(5381):1355-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9721101" target="_blank"〉PubMed〈/a〉
    Keywords: *Apoptosis ; Apoptosis Regulatory Proteins ; Biopolymers ; *Caenorhabditis elegans Proteins ; Calcium-Binding Proteins/*chemistry/genetics/*metabolism ; *Caspases ; Cell Line ; Chemistry, Physical ; Cysteine Endopeptidases/*metabolism ; Cysteine Proteinase Inhibitors/pharmacology ; Enzyme Activation ; Enzyme Precursors/metabolism ; HeLa Cells ; Helminth Proteins/*chemistry/genetics/*metabolism ; Humans ; Mutation ; Oligopeptides/pharmacology ; Physicochemical Phenomena ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-bcl-2/metabolism ; Recombinant Fusion Proteins/metabolism ; Tacrolimus/pharmacology ; Transfection ; bcl-X Protein
    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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