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  • 1
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    Nuclear accumulation of NFAT4 opposed by the JNK signal transduction pathway (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: The nuclear factor of activated T cells (NFAT) group of transcription factors is retained in the cytoplasm of quiescent cells. NFAT activation is mediated in part by induced nuclear import. This process requires calcium-dependent dephosphorylation of NFAT caused by the phosphatase calcineurin. The c-Jun amino-terminal kinase (JNK) phosphorylates NFAT4 on two sites. Mutational removal of the JNK phosphorylation sites caused constitutive nuclear localization of NFAT4. In contrast, JNK activation in calcineurin-stimulated cells caused nuclear exclusion of NFAT4. These findings show that the nuclear accumulation of NFAT4 promoted by calcineurin is opposed by the JNK signal transduction pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chow, C W -- Rincon, M -- Cavanagh, J -- Dickens, M -- Davis, R J -- CA58396/CA/NCI NIH HHS/ -- CA65831/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Nov 28;278(5343):1638-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Program in Molecular Medicine, Department of Biochemistry and Molecular Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9374467" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; COS Cells ; Calcineurin/metabolism ; Calcineurin Inhibitors ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Line ; Cell Nucleus/*metabolism ; Cyclosporine/pharmacology ; Cytoplasm/metabolism ; DNA-Binding Proteins/genetics/*metabolism ; Humans ; JNK Mitogen-Activated Protein Kinases ; Jurkat Cells ; Mitogen-Activated Protein Kinase Kinases ; *Mitogen-Activated Protein Kinases ; Mutation ; NFATC Transcription Factors ; *Nuclear Proteins ; Phosphorylation ; Protein Kinases/metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; T-Lymphocytes/metabolism ; Transcription Factors/genetics/*metabolism ; Transcription, Genetic
    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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  • 2
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    Fluorescence-based isolation of bacterial genes expressed within host cells (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-09-26
    Description: A selection strategy was devised to identify bacterial genes preferentially expressed when a bacterium associates with its host cell. Fourteen Salmonella typhimurium genes, which were under the control of at least four independent regulatory circuits, were identified to be selectively induced in host macrophages. Four genes encode virulence factors, including a component of a type III secretory apparatus. This selection methodology should be generally applicable to the identification of genes from pathogenic organisms that are induced upon association with host cells or tissues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Valdivia, R H -- Falkow, S -- AI26195/AI/NIAID NIH HHS/ -- DK38707/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1997 Sep 26;277(5334):2007-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA. valdivia@cmgm.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9302299" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/genetics ; Cell Line ; Cloning, Molecular ; Female ; Flow Cytometry ; Fluorescence ; *Gene Expression Regulation, Bacterial ; Green Fluorescent Proteins ; HeLa Cells ; Humans ; Luminescent Proteins/genetics ; Macrophages/*microbiology ; Mice ; Mice, Inbred BALB C ; Microscopy, Fluorescence ; Molecular Sequence Data ; Open Reading Frames ; Promoter Regions, Genetic ; Recombinant Fusion Proteins ; Salmonella Infections, Animal/microbiology ; Salmonella typhimurium/*genetics/isolation & purification/*pathogenicity ; Spleen/microbiology ; Transcription Factors/genetics ; Virulence/genetics
    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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  • 3
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    Formation of actin stress fibers and focal adhesions enhanced by Rho-kinase (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-02-28
    Description: The small guanosine triphosphatase (GTPase) Rho is implicated in the formation of stress fibers and focal adhesions in fibroblasts stimulated by extracellular signals such as lysophosphatidic acid (LPA). Rho-kinase is activated by Rho and may mediate some biological effects of Rho. Microinjection of the catalytic domain of Rho-kinase into serum-starved Swiss 3T3 cells induced the formation of stress fibers and focal adhesions, whereas microinjection of the inactive catalytic domain, the Rho-binding domain, or the pleckstrin-homology domain inhibited the LPA-induced formation of stress fibers and focal adhesions. Thus, Rho-kinase appears to mediate signals from Rho and to induce the formation of stress fibers and focal adhesions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Amano, M -- Chihara, K -- Kimura, K -- Fukata, Y -- Nakamura, N -- Matsuura, Y -- Kaibuchi, K -- New York, N.Y. -- Science. 1997 Feb 28;275(5304):1308-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Signal Transduction, Nara Institute of Science and Technology, Ikoma 630-01, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9036856" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Actins/*metabolism ; Adenosine Triphosphate/metabolism ; Animals ; Binding Sites ; *Cell Adhesion ; Cell Line ; DNA, Complementary/genetics ; Enzyme Inhibitors/pharmacology ; GTP Phosphohydrolases/metabolism ; Intracellular Signaling Peptides and Proteins ; Lysophospholipids/pharmacology ; Mice ; Mutation ; Protein-Serine-Threonine Kinases/antagonists & inhibitors/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Staurosporine/pharmacology ; rho-Associated Kinases
    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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  • 4
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    Requirement of guanosine triphosphate-bound ran for signal-mediated nuclear protein export (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-06-20
    Description: A leucine-rich nuclear export signal (NES) allows rapid export of proteins from cell nuclei. Microinjection studies revealed a role for the guanosine triphosphatase (GTPase) Ran in NES-mediated export. Nuclear injection of a Ran mutant (Thr24 --〉 Asn) blocked protein export but not import, whereas depletion of the Ran nucleotide exchange factor RCC1 blocked protein import but not export. However, injection of Ran GTPase-activating protein (RanGAP) into RCC1-depleted cell nuclei inhibited export. Coinjection with Ran mutants insensitive to RanGAP prevented this inhibition. Therefore, NES-mediated protein export appears to require a Ran-GTP complex but does not require Ran-dependent GTP hydrolysis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Richards, S A -- Carey, K L -- Macara, I G -- EST3207122/ES/NIEHS NIH HHS/ -- GM 50526/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Jun 20;276(5320):1842-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Vermont, Burlington, VT 05405, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9188526" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport ; Carrier Proteins/metabolism ; *Cell Cycle Proteins ; Cell Line ; Cell Nucleus/*metabolism ; Cricetinae ; Cytoplasm ; DNA-Binding Proteins/metabolism ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Proteins/metabolism ; *GTPase-Activating Proteins ; Glutathione Transferase/metabolism ; Green Fluorescent Proteins ; *Guanine Nucleotide Exchange Factors ; Guanosine Triphosphate/*metabolism ; Luminescent Proteins/metabolism ; Mutation ; Nuclear Envelope/metabolism ; Nuclear Localization Signals ; Nuclear Proteins/genetics/*metabolism ; Receptors, Glucocorticoid/metabolism ; Recombinant Fusion Proteins/metabolism ; Temperature ; ran GTP-Binding Protein
    Print ISSN: 0036-8075
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  • 5
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    Peptide agonist of the thrombopoietin receptor as potent as the natural cytokine (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
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  • 6
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    Interaction and regulation of subcellular localization of CED-4 by CED-9 (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-02-21
    Description: The Caenorhabditis elegans survival gene ced-9 regulates ced-4 activity and inhibits cell death, but the mechanism by which this occurs is unknown. Through a genetic screen for CED-4-binding proteins, CED-9 was identified as an interacting partner of CED-4. CED-9, but not loss-of-function mutants, associated specifically with CED-4 in yeast or mammalian cells. The CED-9 protein localized primarily to intracellular membranes and the perinuclear region, whereas CED-4 was distributed in the cytosol. Expression of CED-9, but not a mutant lacking the carboxy-terminal hydrophobic domain, targeted CED-4 from the cytosol to intracellular membranes in mammalian cells. Thus, the actions of CED-4 and CED-9 are directly linked, which could provide the basis for the regulation of programmed cell death in C. elegans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, D -- Wallen, H D -- Nunez, G -- CA-64556/CA/NCI NIH HHS/ -- T32A107413-03/PHS HHS/ -- New York, N.Y. -- Science. 1997 Feb 21;275(5303):1126-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Comprehensive Cancer Center, The University of Michigan Medical School, Ann Arbor, MI 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9027313" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Apoptosis Regulatory Proteins ; Caenorhabditis elegans/*cytology/genetics ; *Caenorhabditis elegans Proteins ; Calcium-Binding Proteins/analysis/genetics/*metabolism ; Cell Fractionation ; Cell Line ; Cytosol/chemistry ; Genes, Helminth ; Helminth Proteins/analysis/genetics/*metabolism ; Humans ; Intracellular Membranes/chemistry ; Mutation ; Proto-Oncogene Proteins/analysis/genetics/*metabolism ; *Proto-Oncogene Proteins c-bcl-2 ; Transfection ; bcl-X Protein
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  • 7
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    Regulatory phosphorylation of AMPA-type glutamate receptors by CaM-KII during long-term potentiation (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-06-27
    Description: Long-term potentiation (LTP), a cellular model of learning and memory, requires calcium-dependent protein kinases. Induction of LTP increased the phosphorus-32 labeling of alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA)-type glutamate receptors (AMPA-Rs), which mediate rapid excitatory synaptic transmission. This AMPA-R phosphorylation appeared to be catalyzed by Ca2+- and calmodulin-dependent protein kinase II (CaM-KII): (i) it correlated with the activation and autophosphorylation of CaM-KII, (ii) it was blocked by the CaM-KII inhibitor KN-62, and (iii) its phosphorus-32 peptide map was the same as that of GluR1 coexpressed with activated CaM-KII in HEK-293 cells. This covalent modulation of AMPA-Rs in LTP provides a postsynaptic molecular mechanism for synaptic plasticity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barria, A -- Muller, D -- Derkach, V -- Griffith, L C -- Soderling, T R -- NS27037/NS/NINDS NIH HHS/ -- R01 GM054408/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Jun 27;276(5321):2042-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vollum Institute, Oregon Health Sciences University, Portland, OR 97201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9197267" target="_blank"〉PubMed〈/a〉
    Keywords: 1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine/analogs & derivatives/pharmacology ; 2-Amino-5-phosphonovalerate/pharmacology ; Animals ; Calcium/metabolism ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors/*metabolism ; Cell Line ; Enzyme Inhibitors/pharmacology ; Excitatory Amino Acid Antagonists/pharmacology ; Hippocampus/*metabolism ; Humans ; In Vitro Techniques ; *Long-Term Potentiation/drug effects ; Male ; Peptide Mapping ; Phosphorylation ; Rats ; Rats, Sprague-Dawley ; Receptors, AMPA/*metabolism ; Synaptic Transmission/drug effects
    Print ISSN: 0036-8075
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  • 8
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    Telomerase catalytic subunit homologs from fission yeast and human (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-08-15
    Description: Catalytic protein subunits of telomerase from the ciliate Euplotes aediculatus and the yeast Saccharomyces cerevisiae contain reverse transcriptase motifs. Here the homologous genes from the fission yeast Schizosaccharomyces pombe and human are identified. Disruption of the S. pombe gene resulted in telomere shortening and senescence, and expression of mRNA from the human gene correlated with telomerase activity in cell lines. Sequence comparisons placed the telomerase proteins in the reverse transcriptase family but revealed hallmarks that distinguish them from retroviral and retrotransposon relatives. Thus, the proposed telomerase catalytic subunits are phylogenetically conserved and represent a deep branch in the evolution of reverse transcriptases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nakamura, T M -- Morin, G B -- Chapman, K B -- Weinrich, S L -- Andrews, W H -- Lingner, J -- Harley, C B -- Cech, T R -- GM28039/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Aug 15;277(5328):955-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9252327" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Catalysis ; Cell Line ; DNA-Binding Proteins ; Evolution, Molecular ; Genes, Fungal ; Humans ; Introns ; Molecular Sequence Data ; Phylogeny ; Proteins/*chemistry/genetics/metabolism ; *Rna ; RNA, Messenger/genetics/metabolism ; RNA-Directed DNA Polymerase/chemistry ; Retroelements ; Schizosaccharomyces/*enzymology/genetics/growth & development ; Schizosaccharomyces pombe Proteins ; Sequence Alignment ; Telomerase/*chemistry/genetics/metabolism ; Telomere/metabolism
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  • 9
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    Does a common virus give HIV a helping hand? (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 1997 Jun 20;276(5320):1794.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9206839" target="_blank"〉PubMed〈/a〉
    Keywords: CD4-Positive T-Lymphocytes/virology ; Cell Fusion ; Cell Line ; Chemokines ; Cytomegalovirus/*physiology ; HIV/*physiology ; Humans ; Receptors, CCR2 ; *Receptors, Chemokine ; Receptors, Cytokine/genetics/*physiology ; Receptors, HIV/*physiology ; Viral Proteins/*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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  • 10
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    Caspase-3-generated fragment of gelsolin: effector of morphological change in apoptosis (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-10-10
    Description: The caspase-3 (CPP32, apopain, YAMA) family of cysteinyl proteases has been implicated as key mediators of apoptosis in mammalian cells. Gelsolin was identified as a substrate for caspase-3 by screening the translation products of small complementary DNA pools for sensitivity to cleavage by caspase-3. Gelsolin was cleaved in vivo in a caspase-dependent manner in cells stimulated by Fas. Caspase-cleaved gelsolin severed actin filaments in vitro in a Ca2+-independent manner. Expression of the gelsolin cleavage product in multiple cell types caused the cells to round up, detach from the plate, and undergo nuclear fragmentation. Neutrophils isolated from mice lacking gelsolin had delayed onset of both blebbing and DNA fragmentation, following apoptosis induction, compared with wild-type neutrophils. Thus, cleaved gelsolin may be one physiological effector of morphologic change during apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kothakota, S -- Azuma, T -- Reinhard, C -- Klippel, A -- Tang, J -- Chu, K -- McGarry, T J -- Kirschner, M W -- Koths, K -- Kwiatkowski, D J -- Williams, L T -- P01 HL48743/HL/NHLBI NIH HHS/ -- R01 HL54188/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1997 Oct 10;278(5336):294-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Chiron Corporation, Emeryville, CA 94608, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9323209" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Amino Acid Chloromethyl Ketones/pharmacology ; Animals ; Antigens, CD95/physiology ; *Apoptosis ; Caspase 3 ; *Caspases ; Cell Line ; *Cell Size ; Cycloheximide/pharmacology ; Cysteine Endopeptidases/*metabolism ; Cysteine Proteinase Inhibitors/pharmacology ; Cytoskeleton/metabolism ; DNA Fragmentation ; Gelsolin/*metabolism ; Humans ; Mice ; Neutrophils/cytology/metabolism ; Recombinant Proteins/metabolism ; Transfection ; Tumor Cells, Cultured ; Tumor Necrosis Factor-alpha/pharmacology
    Print ISSN: 0036-8075
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  • 11
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    A cell growth switch (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1997 Jun 20;276(5320):1891.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9206844" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/metabolism ; *Cell Division ; Cell Line ; DNA-Binding Proteins/metabolism ; Dimerization ; Erythropoietin/metabolism ; Heat-Shock Proteins/metabolism ; Humans ; Receptors, Erythropoietin/metabolism ; Recombinant Proteins/metabolism ; Signal Transduction ; Tacrolimus/*analogs & derivatives/pharmacology ; Tacrolimus Binding Proteins
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  • 12
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    Constitutive transcriptional activation by a beta-catenin-Tcf complex in APC-/- colon carcinoma (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-03-21
    Description: The adenomatous polyposis coli (APC) tumor suppressor protein binds to beta-catenin, a protein recently shown to interact with Tcf and Lef transcription factors. The gene encoding hTcf-4, a Tcf family member that is expressed in colonic epithelium, was cloned and characterized. hTcf-4 transactivates transcription only when associated with beta-catenin. Nuclei of APC-/- colon carcinoma cells were found to contain a stable beta-catenin-hTcf-4 complex that was constitutively active, as measured by transcription of a Tcf reporter gene. Reintroduction of APC removed beta-catenin from hTcf-4 and abrogated the transcriptional transactivation. Constitutive transcription of Tcf target genes, caused by loss of APC function, may be a crucial event in the early transformation of colonic epithelium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Korinek, V -- Barker, N -- Morin, P J -- van Wichen, D -- de Weger, R -- Kinzler, K W -- Vogelstein, B -- Clevers, H -- CA57345/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Mar 21;275(5307):1784-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, University Hospital, Post Office Box 85500, 3508 GA Utrecht, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9065401" target="_blank"〉PubMed〈/a〉
    Keywords: Adenomatous Polyposis Coli Protein ; Amino Acid Sequence ; Animals ; Cell Line ; Cell Transformation, Neoplastic ; Cloning, Molecular ; Colon/metabolism ; Colonic Neoplasms/*genetics/metabolism ; Cytoskeletal Proteins/genetics/*metabolism ; Gene Expression Regulation, Neoplastic ; *Genes, APC ; Genes, Reporter ; Humans ; Intestinal Mucosa/metabolism ; Mice ; Molecular Sequence Data ; Signal Transduction ; TCF Transcription Factors ; *Trans-Activators ; Transcription Factor 7-Like 2 Protein ; Transcription Factors/chemistry/genetics/*metabolism ; *Transcriptional Activation ; Transfection ; Tumor Cells, Cultured ; beta Catenin
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  • 13
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    Activation of heat shock transcription factor 3 by c-Myb in the absence of cellular stress (1997)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1997-07-11
    Description: In vertebrates, the presence of multiple heat shock transcription factors (HSFs) indicates that these factors may be regulated by distinct stress signals. HSF3 was specifically activated in unstressed proliferating cells by direct binding to the c-myb proto-oncogene product (c-Myb). These factors formed a complex through their DNA binding domains that stimulated the nuclear entry and formation of the transcriptionally active trimer of HSF3. Because c-Myb participates in cellular proliferation, this regulatory pathway may provide a link between cellular proliferation and the stress response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kanei-Ishii, C -- Tanikawa, J -- Nakai, A -- Morimoto, R I -- Ishii, S -- New York, N.Y. -- Science. 1997 Jul 11;277(5323):246-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Genetics, Tsukuba Life Science Center, RIKEN, Tsukuba, Ibaraki 305, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9211854" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Cycle ; Cell Line ; Cell Nucleus/metabolism ; DNA/*metabolism ; DNA-Binding Proteins/chemistry/*metabolism ; Promoter Regions, Genetic ; Proto-Oncogene Proteins/*metabolism ; Proto-Oncogene Proteins c-myb ; Recombinant Fusion Proteins/metabolism ; Trans-Activators/chemistry/*metabolism ; Transcriptional Activation ; Transfection
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  • 14
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    A di-acidic signal required for selective export from the endoplasmic reticulum (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-07-25
    Description: Transport of membrane proteins between intracellular compartments requires specific sequences in the protein cytoplasmic domain to direct packaging into vesicle shuttles. A sequence that mediates export from the endoplasmic reticulum (ER) has proved elusive. A di-acidic signal (Asp-X-Glu, where X represents any amino acid) on the cytoplasmic tail of vesicular stomatitis virus glycoprotein (VSV-G) and other cargo molecules was required for efficient recruitment to vesicles mediating export from the ER in baby hamster kidney cells. The existence of such a signal provides evidence that export from the ER occurs through a selective mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nishimura, N -- Balch, W E -- GM 42336/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Jul 25;277(5325):556-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, 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/9228004" target="_blank"〉PubMed〈/a〉
    Keywords: Acid Phosphatase/metabolism ; Amino Acid Sequence ; Animals ; Biological Transport ; Cell Line ; Cricetinae ; Cytoplasm/chemistry ; Endoplasmic Reticulum/*metabolism ; Golgi Apparatus/metabolism ; *Membrane Glycoproteins ; Membrane Proteins/*chemistry/*metabolism ; Molecular Sequence Data ; Mutation ; Protein Folding ; Protein Sorting Signals/chemistry/*metabolism ; Receptors, Antigen, T-Cell, alpha-beta/metabolism ; Recombinant Fusion Proteins/metabolism ; Viral Envelope Proteins/*chemistry/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 15
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    Primary target (1997)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1997-11-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1997 Sep 19;277(5333):1848.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9324771" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Clone Cells ; Culture Media ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclins/*genetics ; Gene Deletion ; Gene Targeting/*methods ; Genetic Vectors ; Humans
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 16
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    Xenotransplanters turn xenovirologists (1997)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1997-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1997 Jun 20;276(5320):1893.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9206845" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Coculture Techniques ; Gammaretrovirus/genetics/*physiology ; Genome, Viral ; Humans ; Retroviridae Infections/transmission ; Swine/genetics/*virology ; *Transplantation, Heterologous
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 17
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    The ancient drug salicylate directly activates AMP-activated protein kinase (2012)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2012-04-21
    Description: Salicylate, a plant product, has been in medicinal use since ancient times. More recently, it has been replaced by synthetic derivatives such as aspirin and salsalate, both of which are rapidly broken down to salicylate in vivo. At concentrations reached in plasma after administration of salsalate or of aspirin at high doses, salicylate activates adenosine monophosphate-activated protein kinase (AMPK), a central regulator of cell growth and metabolism. Salicylate binds at the same site as the synthetic activator A-769662 to cause allosteric activation and inhibition of dephosphorylation of the activating phosphorylation site, threonine-172. In AMPK knockout mice, effects of salicylate to increase fat utilization and to lower plasma fatty acids in vivo were lost. Our results suggest that AMPK activation could explain some beneficial effects of salsalate and aspirin in humans.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3399766/" 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/PMC3399766/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hawley, Simon A -- Fullerton, Morgan D -- Ross, Fiona A -- Schertzer, Jonathan D -- Chevtzoff, Cyrille -- Walker, Katherine J -- Peggie, Mark W -- Zibrova, Darya -- Green, Kevin A -- Mustard, Kirsty J -- Kemp, Bruce E -- Sakamoto, Kei -- Steinberg, Gregory R -- Hardie, D Grahame -- 080982/Wellcome Trust/United Kingdom -- 097726/Wellcome Trust/United Kingdom -- MC_U127088492/Medical Research Council/United Kingdom -- Canadian Institutes of Health Research/Canada -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2012 May 18;336(6083):918-22. doi: 10.1126/science.1215327. Epub 2012 Apr 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cell Signalling and Immunology, College of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22517326" target="_blank"〉PubMed〈/a〉
    Keywords: AMP-Activated Protein Kinases/genetics/*metabolism ; Amino Acid Substitution ; Animals ; Aspirin/pharmacology ; Binding Sites ; Carbohydrate Metabolism/drug effects ; Cell Line ; Enzyme Activation ; Enzyme Activators/pharmacology ; HEK293 Cells ; Humans ; Lipid Metabolism/drug effects ; Liver/drug effects/metabolism ; Mice ; Mice, Knockout ; Mutation ; Oxygen Consumption/drug effects ; Phosphorylation ; Pyrones/pharmacology ; Rats ; Salicylates/blood/*metabolism/*pharmacology ; Thiophenes/pharmacology
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  • 18
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    Sedlin controls the ER export of procollagen by regulating the Sar1 cycle (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-09-29
    Description: Newly synthesized proteins exit the endoplasmic reticulum (ER) via coat protein complex II (COPII) vesicles. Procollagen (PC), however, forms prefibrils that are too large to fit into typical COPII vesicles; PC thus needs large transport carriers, which we term megacarriers. TANGO1 assists PC packing, but its role in promoting the growth of megacarriers is not known. We found that TANGO1 recruited Sedlin, a TRAPP component that is defective in spondyloepiphyseal dysplasia tarda (SEDT), and that Sedlin was required for the ER export of PC. Sedlin bound and promoted efficient cycling of Sar1, a guanosine triphosphatase that can constrict membranes, and thus allowed nascent carriers to grow and incorporate PC prefibrils. This joint action of TANGO1 and Sedlin sustained the ER export of PC, and its derangement may explain the defective chondrogenesis underlying SEDT.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3471527/" 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/PMC3471527/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Venditti, Rossella -- Scanu, Tiziana -- Santoro, Michele -- Di Tullio, Giuseppe -- Spaar, Alexander -- Gaibisso, Renato -- Beznoussenko, Galina V -- Mironov, Alexander A -- Mironov, Alexander Jr -- Zelante, Leopoldo -- Piemontese, Maria Rosaria -- Notarangelo, Angelo -- Malhotra, Vivek -- Vertel, Barbara M -- Wilson, Cathal -- De Matteis, Maria Antonietta -- AR053696/AR/NIAMS NIH HHS/ -- GGP06166/Telethon/Italy -- GGP07075/Telethon/Italy -- GSP08002/Telethon/Italy -- GTF08001/Telethon/Italy -- New York, N.Y. -- Science. 2012 Sep 28;337(6102):1668-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Telethon Institute of Genetics and Medicine, Naples, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23019651" target="_blank"〉PubMed〈/a〉
    Keywords: Aryl Hydrocarbon Receptor Nuclear Translocator/*metabolism ; COP-Coated Vesicles/metabolism ; Cell Line ; Chondrogenesis/genetics ; Endoplasmic Reticulum/*metabolism ; Golgi Apparatus/metabolism ; Humans ; Membrane Transport Proteins/genetics/*metabolism ; Monomeric GTP-Binding Proteins/*metabolism ; Mutation ; Osteochondrodysplasias/genetics/metabolism ; Procollagen/*metabolism ; Protein Transport ; Transcription Factors/genetics/*metabolism
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  • 19
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    GSK3-TIP60-ULK1 signaling pathway links growth factor deprivation to autophagy (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-04-28
    Description: In metazoans, cells depend on extracellular growth factors for energy homeostasis. We found that glycogen synthase kinase-3 (GSK3), when deinhibited by default in cells deprived of growth factors, activates acetyltransferase TIP60 through phosphorylating TIP60-Ser(86), which directly acetylates and stimulates the protein kinase ULK1, which is required for autophagy. Cells engineered to express TIP60(S86A) that cannot be phosphorylated by GSK3 could not undergo serum deprivation-induced autophagy. An acetylation-defective mutant of ULK1 failed to rescue autophagy in ULK1(-/-) mouse embryonic fibroblasts. Cells used signaling from GSK3 to TIP60 and ULK1 to regulate autophagy when deprived of serum but not glucose. These findings uncover an activating pathway that integrates protein phosphorylation and acetylation to connect growth factor deprivation to autophagy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, Shu-Yong -- Li, Terytty Yang -- Liu, Qing -- Zhang, Cixiong -- Li, Xiaotong -- Chen, Yan -- Zhang, Shi-Meng -- Lian, Guili -- Liu, Qi -- Ruan, Ka -- Wang, Zhen -- Zhang, Chen-Song -- Chien, Kun-Yi -- Wu, Jiawei -- Li, Qinxi -- Han, Jiahuai -- Lin, Sheng-Cai -- New York, N.Y. -- Science. 2012 Apr 27;336(6080):477-81. doi: 10.1126/science.1217032.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Fujian, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22539723" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Autophagy ; Cell Line ; Cell Line, Tumor ; Culture Media ; Culture Media, Serum-Free ; Glucose/metabolism ; Glycogen Synthase Kinase 3/genetics/*metabolism ; HEK293 Cells ; Histone Acetyltransferases/genetics/*metabolism ; Humans ; Intercellular Signaling Peptides and Proteins/metabolism ; Intracellular Signaling Peptides and Proteins/genetics/*metabolism ; Mice ; Phosphorylation ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Rats ; *Signal Transduction ; Trans-Activators/genetics/metabolism
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  • 20
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    Tumor necrosis factor signaling requires iRhom2 to promote trafficking and activation of TACE (2012)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2012-01-17
    Description: The cytokine tumor necrosis factor (TNF) is the primary trigger of inflammation. Like many extracellular signaling proteins, TNF is synthesized as a transmembrane protein; the active signal is its ectodomain, which is shed from cells after cleavage by an ADAM family metalloprotease, ADAM17 (TNFalpha-converting enzyme, TACE). We report that iRhom2 (RHBDF2), a proteolytically inactive member of the rhomboid family, is required for TNF release in mice. iRhom2 binds TACE and promotes its exit from the endoplasmic reticulum. The failure of TACE to exit the endoplasmic reticulum in the absence of iRhom2 prevents the furin-mediated maturation and trafficking of TACE to the cell surface, the site of TNF cleavage. Given the role of TNF in autoimmune and inflammatory diseases, iRhom2 may represent an attractive therapeutic target.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3272371/" 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/PMC3272371/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adrain, Colin -- Zettl, Markus -- Christova, Yonka -- Taylor, Neil -- Freeman, Matthew -- MC_U105178780/Medical Research Council/United Kingdom -- U.1051.01.009(78780)/Medical Research Council/United Kingdom -- U105178780/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2012 Jan 13;335(6065):225-8. doi: 10.1126/science.1214400.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22246777" target="_blank"〉PubMed〈/a〉
    Keywords: ADAM Proteins/*metabolism ; Animals ; Carrier Proteins/genetics/*metabolism ; Cell Line ; Cell Membrane/metabolism ; Endoplasmic Reticulum/metabolism ; Enzyme Activation ; Furin/metabolism ; Humans ; Lipopolysaccharides/immunology ; Macrophages/metabolism ; Mice ; Mice, Knockout ; Protein Binding ; Protein Transport ; *Signal Transduction ; Tumor Necrosis Factor-alpha/*metabolism
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  • 21
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    A DOC2 protein identified by mutational profiling is essential for apicomplexan parasite exocytosis (2012)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2012-01-17
    Description: Exocytosis is essential to the lytic cycle of apicomplexan parasites and required for the pathogenesis of toxoplasmosis and malaria. DOC2 proteins recruit the membrane fusion machinery required for exocytosis in a Ca(2+)-dependent fashion. Here, the phenotype of a Toxoplasma gondii conditional mutant impaired in host cell invasion and egress was pinpointed to a defect in secretion of the micronemes, an apicomplexan-specific organelle that contains adhesion proteins. Whole-genome sequencing identified the etiological point mutation in TgDOC2.1. A conditional allele of the orthologous gene engineered into Plasmodium falciparum was also defective in microneme secretion. However, the major effect was on invasion, suggesting that microneme secretion is dispensable for Plasmodium egress.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3354045/" 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/PMC3354045/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Farrell, Andrew -- Thirugnanam, Sivasakthivel -- Lorestani, Alexander -- Dvorin, Jeffrey D -- Eidell, Keith P -- Ferguson, David J P -- Anderson-White, Brooke R -- Duraisingh, Manoj T -- Marth, Gabor T -- Gubbels, Marc-Jan -- AI057919/AI/NIAID NIH HHS/ -- AI081220/AI/NIAID NIH HHS/ -- AI087874/AI/NIAID NIH HHS/ -- AI088314/AI/NIAID NIH HHS/ -- HG004719/HG/NHGRI NIH HHS/ -- K08 AI087874/AI/NIAID NIH HHS/ -- K08 AI087874-02/AI/NIAID NIH HHS/ -- R01 AI057919/AI/NIAID NIH HHS/ -- R01 HG004719/HG/NHGRI NIH HHS/ -- R21 AI081220/AI/NIAID NIH HHS/ -- R21 AI088314/AI/NIAID NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2012 Jan 13;335(6065):218-21. doi: 10.1126/science.1210829.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Boston College, Chestnut Hill, MA 02467, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22246776" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Calcium/*metabolism ; Calcium-Binding Proteins/chemistry/genetics/*metabolism ; Cell Line ; *Exocytosis ; Genes, Protozoan ; Genetic Complementation Test ; Genome, Protozoan ; Humans ; Models, Molecular ; Molecular Sequence Data ; Movement ; Mutagenesis ; Organelles/*metabolism ; Plasmodium falciparum/genetics/growth & development/physiology ; Point Mutation ; Protein Structure, Tertiary ; Protozoan Proteins/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Toxoplasma/genetics/growth & development/*physiology/ultrastructure
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  • 22
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    An overlapping protein-coding region in influenza A virus segment 3 modulates the host response (2012)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2012-06-30
    Description: Influenza A virus (IAV) infection leads to variable and imperfectly understood pathogenicity. We report that segment 3 of the virus contains a second open reading frame ("X-ORF"), accessed via ribosomal frameshifting. The frameshift product, termed PA-X, comprises the endonuclease domain of the viral PA protein with a C-terminal domain encoded by the X-ORF and functions to repress cellular gene expression. PA-X also modulates IAV virulence in a mouse infection model, acting to decrease pathogenicity. Loss of PA-X expression leads to changes in the kinetics of the global host response, which notably includes increases in inflammatory, apoptotic, and T lymphocyte-signaling pathways. Thus, we have identified a previously unknown IAV protein that modulates the host response to infection, a finding with important implications for understanding IAV pathogenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3552242/" 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/PMC3552242/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jagger, B W -- Wise, H M -- Kash, J C -- Walters, K-A -- Wills, N M -- Xiao, Y-L -- Dunfee, R L -- Schwartzman, L M -- Ozinsky, A -- Bell, G L -- Dalton, R M -- Lo, A -- Efstathiou, S -- Atkins, J F -- Firth, A E -- Taubenberger, J K -- Digard, P -- 073126/Wellcome Trust/United Kingdom -- 088789/Wellcome Trust/United Kingdom -- G0700815/Medical Research Council/United Kingdom -- G0700815(82260)/Medical Research Council/United Kingdom -- G9800943/Medical Research Council/United Kingdom -- MR/J002232/1/Medical Research Council/United Kingdom -- Biotechnology and Biological Sciences Research Council/United Kingdom -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2012 Jul 13;337(6091):199-204. doi: 10.1126/science.1222213. Epub 2012 Jun 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Virology, Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22745253" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Codon ; Conserved Sequence ; Female ; *Frameshifting, Ribosomal ; Gene Expression Regulation ; Genome, Viral ; HEK293 Cells ; Humans ; Influenza A Virus, H1N1 Subtype/*genetics/growth & development/pathogenicity ; Influenza A virus/*genetics/metabolism ; Lung/pathology/virology ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Mutation ; *Open Reading Frames ; Orthomyxoviridae Infections/genetics/immunology/pathology/*virology ; Protein Interaction Domains and Motifs ; Proteome ; RNA Replicase/chemistry/*genetics/*metabolism ; RNA, Messenger/genetics/metabolism ; RNA, Viral/genetics/metabolism ; Reassortant Viruses/genetics ; Repressor Proteins/chemistry/*genetics/*metabolism ; Viral Nonstructural Proteins/chemistry/*genetics/*metabolism ; Viral Proteins/biosynthesis/chemistry/*genetics/*metabolism ; Virus Replication
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    Metabolite profiling identifies a key role for glycine in rapid cancer cell proliferation (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-05-26
    Description: Metabolic reprogramming has been proposed to be a hallmark of cancer, yet a systematic characterization of the metabolic pathways active in transformed cells is currently lacking. Using mass spectrometry, we measured the consumption and release (CORE) profiles of 219 metabolites from media across the NCI-60 cancer cell lines, and integrated these data with a preexisting atlas of gene expression. This analysis identified glycine consumption and expression of the mitochondrial glycine biosynthetic pathway as strongly correlated with rates of proliferation across cancer cells. Antagonizing glycine uptake and its mitochondrial biosynthesis preferentially impaired rapidly proliferating cells. Moreover, higher expression of this pathway was associated with greater mortality in breast cancer patients. Increased reliance on glycine may represent a metabolic vulnerability for selectively targeting rapid cancer cell proliferation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3526189/" 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/PMC3526189/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jain, Mohit -- Nilsson, Roland -- Sharma, Sonia -- Madhusudhan, Nikhil -- Kitami, Toshimori -- Souza, Amanda L -- Kafri, Ran -- Kirschner, Marc W -- Clish, Clary B -- Mootha, Vamsi K -- K08 HL107451/HL/NHLBI NIH HHS/ -- K08HL107451/HL/NHLBI NIH HHS/ -- R01 DK081457/DK/NIDDK NIH HHS/ -- R01 GM026875/GM/NIGMS NIH HHS/ -- R01DK081457/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2012 May 25;336(6084):1040-4. doi: 10.1126/science.1218595.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Broad Institute, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22628656" target="_blank"〉PubMed〈/a〉
    Keywords: Breast Neoplasms/genetics/metabolism/pathology ; Cell Cycle ; Cell Line ; Cell Line, Tumor ; *Cell Proliferation ; Cell Transformation, Neoplastic ; Chromatography, Liquid ; Culture Media ; Gene Expression ; Gene Expression Profiling ; Glycine/biosynthesis/*metabolism ; Humans ; Metabolic Networks and Pathways/genetics ; Metabolome ; Mitochondria/enzymology/metabolism ; Neoplasms/genetics/*metabolism/*pathology ; Purines/biosynthesis ; Tandem Mass Spectrometry
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    Extrachromosomal microDNAs and chromosomal microdeletions in normal tissues (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-03-10
    Description: We have identified tens of thousands of short extrachromosomal circular DNAs (microDNA) in mouse tissues as well as mouse and human cell lines. These microDNAs are 200 to 400 base pairs long, are derived from unique nonrepetitive sequence, and are enriched in the 5'-untranslated regions of genes, exons, and CpG islands. Chromosomal loci that are enriched sources of microDNA in the adult brain are somatically mosaic for microdeletions that appear to arise from the excision of microDNAs. Germline microdeletions identified by the "Thousand Genomes" project may also arise from the excision of microDNAs in the germline lineage. We have thus identified a previously unknown DNA entity in mammalian cells and provide evidence that their generation leaves behind deletions in different genomic loci.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3703515/" 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/PMC3703515/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shibata, Yoshiyuki -- Kumar, Pankaj -- Layer, Ryan -- Willcox, Smaranda -- Gagan, Jeffrey R -- Griffith, Jack D -- Dutta, Anindya -- ES013773/ES/NIEHS NIH HHS/ -- GM31819/GM/NIGMS NIH HHS/ -- GM84465/GM/NIGMS NIH HHS/ -- P30 CA016086/CA/NCI NIH HHS/ -- R01 CA060499/CA/NCI NIH HHS/ -- R01 CA060499-18/CA/NCI NIH HHS/ -- R01 CA60499/CA/NCI NIH HHS/ -- R01 ES013773/ES/NIEHS NIH HHS/ -- R01 GM031819/GM/NIGMS NIH HHS/ -- R01 GM084465/GM/NIGMS NIH HHS/ -- R01 GM084465-04/GM/NIGMS NIH HHS/ -- T32 GM008136/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2012 Apr 6;336(6077):82-6. doi: 10.1126/science.1213307. Epub 2012 Mar 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22403181" target="_blank"〉PubMed〈/a〉
    Keywords: 5' Untranslated Regions ; Animals ; Base Pairing ; Base Sequence ; Brain/*embryology ; Brain Chemistry ; Cell Line ; Cell Line, Tumor ; *Chromosome Deletion ; Chromosomes, Human/*genetics ; Chromosomes, Mammalian/*genetics ; CpG Islands ; DNA Replication ; *DNA, Circular/analysis/chemistry/isolation & purification/metabolism ; Exons ; Germ Cells/chemistry ; Heart/embryology ; Humans ; Liver/chemistry/embryology ; Mice ; Mice, Inbred C57BL ; Microscopy, Electron ; Molecular Sequence Data ; Polymerase Chain Reaction ; Repetitive Sequences, Nucleic Acid
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    Genomics. ENCODE project writes eulogy for junk DNA (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-09-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2012 Sep 7;337(6099):1159, 1161. doi: 10.1126/science.337.6099.1159.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22955811" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Conserved Sequence ; *DNA, Intergenic/genetics/metabolism ; DNA-Binding Proteins/genetics/metabolism ; Gene Expression Regulation ; Gene Regulatory Networks ; Genetic Predisposition to Disease ; Genome ; *Genome, Human ; *Genomics ; Humans ; Mammals/genetics ; RNA, Untranslated/genetics/metabolism ; Sequence Analysis, DNA ; Transcription Factors/genetics/metabolism
    Print ISSN: 0036-8075
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    Drosophila dosage compensation involves enhanced Pol II recruitment to male X-linked promoters (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-07-24
    Description: Through hyperacetylation of histone H4 lysine 16 (H4K16), the male-specific lethal (MSL) complex in Drosophila approximately doubles transcription from the single male X chromosome in order to match X-linked expression in females and expression from diploid autosomes. By obtaining accurate measurements of RNA polymerase II (Pol II) occupancies and short promoter-proximal RNA production, we detected a consistent, genome-scale increase in Pol II activity at the promoters of male X-linked genes. Moreover, we found that enhanced Pol II recruitment to male X-linked promoters is largely dependent on the MSL complex. These observations provide insights into how global modulation of chromatin structure by histone acetylation contributes to the precise control of Pol II function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conrad, Thomas -- Cavalli, Florence M G -- Vaquerizas, Juan M -- Luscombe, Nicholas M -- Akhtar, Asifa -- Cancer Research UK/United Kingdom -- New York, N.Y. -- Science. 2012 Aug 10;337(6095):742-6. doi: 10.1126/science.1221428. Epub 2012 Jul 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg im Breisgau, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22821985" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Animals ; Cell Line ; Chromatin Immunoprecipitation ; DNA Polymerase II/*metabolism ; *Dosage Compensation, Genetic ; Drosophila/*genetics/metabolism ; Drosophila Proteins/*metabolism ; Female ; Genes, Insect ; *Genes, X-Linked ; Histones/metabolism ; Male ; Multigene Family ; *Promoter Regions, Genetic ; Sex Characteristics ; Transcription, Genetic ; X Chromosome/*genetics
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    iRhom2 regulation of TACE controls TNF-mediated protection against Listeria and responses to LPS (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-01-17
    Description: Innate immune responses are vital for pathogen defense but can result in septic shock when excessive. A key mediator of septic shock is tumor necrosis factor-alpha (TNFalpha), which is shed from the plasma membrane after cleavage by the TNFalpha convertase (TACE). We report that the rhomboid family member iRhom2 interacted with TACE and regulated TNFalpha shedding. iRhom2 was critical for TACE maturation and trafficking to the cell surface in hematopoietic cells. Gene-targeted iRhom2-deficient mice showed reduced serum TNFalpha in response to lipopolysaccharide (LPS) and could survive a lethal LPS dose. Furthermore, iRhom2-deficient mice failed to control the replication of Listeria monocytogenes. Our study has identified iRhom2 as a regulator of innate immunity that may be an important target for modulating sepsis and pathogen defense.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4250273/" 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/PMC4250273/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McIlwain, David R -- Lang, Philipp A -- Maretzky, Thorsten -- Hamada, Koichi -- Ohishi, Kazuhito -- Maney, Sathish Kumar -- Berger, Thorsten -- Murthy, Aditya -- Duncan, Gordon -- Xu, Haifeng C -- Lang, Karl S -- Haussinger, Dieter -- Wakeham, Andrew -- Itie-Youten, Annick -- Khokha, Rama -- Ohashi, Pamela S -- Blobel, Carl P -- Mak, Tak W -- GM64750/GM/NIGMS NIH HHS/ -- R01 GM064750/GM/NIGMS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- New York, N.Y. -- Science. 2012 Jan 13;335(6065):229-32. doi: 10.1126/science.1214448.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Campell Family Institute for Breast Cancer Research, Ontario Cancer Institute, University Health Network (UHN), 620 University Avenue, Toronto, Ontario M5G 2C1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22246778" target="_blank"〉PubMed〈/a〉
    Keywords: ADAM Proteins/genetics/*metabolism ; Amino Acid Sequence ; Animals ; B-Lymphocytes/immunology/metabolism ; Base Sequence ; Carrier Proteins/chemistry/genetics/*metabolism ; Cell Line ; Cell Membrane/metabolism ; Gene Deletion ; *Immunity, Innate ; Lipopolysaccharides/*immunology ; Listeria monocytogenes/immunology/physiology ; Listeriosis/*immunology/metabolism/microbiology/pathology ; Macrophages/immunology/metabolism ; Macrophages, Peritoneal/immunology/metabolism/microbiology ; Mice ; Molecular Sequence Data ; Protein Transport ; Shock, Septic/*immunology/metabolism ; Spleen/cytology ; Tumor Necrosis Factor-alpha/blood/genetics/*metabolism
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    Medicine. iPSC disease modeling (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Soldner, Frank -- Jaenisch, Rudolf -- R01 CA084198/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2012 Nov 30;338(6111):1155-6. doi: 10.1126/science.1227682.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Whitehead Institute, 9 Cambridge Center, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23197518" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Cell Differentiation/genetics ; Cell Line ; Cellular Reprogramming/*genetics ; Disease/*genetics ; *Epigenesis, Genetic ; Genetic Engineering/*methods ; Humans ; Induced Pluripotent Stem Cells/*physiology ; *Models, Genetic ; Transfection/methods
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    Recurrent hemizygous deletions in cancers may optimize proliferative potential (2012)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2012-05-26
    Description: Tumors exhibit numerous recurrent hemizygous focal deletions that contain no known tumor suppressors and are poorly understood. To investigate whether these regions contribute to tumorigenesis, we searched genetically for genes with cancer-relevant properties within these hemizygous deletions. We identified STOP and GO genes, which negatively and positively regulate proliferation, respectively. STOP genes include many known tumor suppressors, whereas GO genes are enriched for essential genes. Analysis of their chromosomal distribution revealed that recurring deletions preferentially overrepresent STOP genes and underrepresent GO genes. We propose a hypothesis called the cancer gene island model, whereby gene islands encompassing high densities of STOP genes and low densities of GO genes are hemizygously deleted to maximize proliferative fitness through cumulative haploinsufficiencies. Because hundreds to thousands of genes are hemizygously deleted per tumor, this mechanism may help to drive tumorigenesis across many cancer types.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4027969/" 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/PMC4027969/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Solimini, Nicole L -- Xu, Qikai -- Mermel, Craig H -- Liang, Anthony C -- Schlabach, Michael R -- Luo, Ji -- Burrows, Anna E -- Anselmo, Anthony N -- Bredemeyer, Andrea L -- Li, Mamie Z -- Beroukhim, Rameen -- Meyerson, Matthew -- Elledge, Stephen J -- T32 GM007753/GM/NIGMS NIH HHS/ -- T32GM07753/GM/NIGMS NIH HHS/ -- U54CA143798/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Jul 6;337(6090):104-9. doi: 10.1126/science.1219580. Epub 2012 May 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard University Medical School, and Division of Genetics, Howard Hughes Medical Institute, Brigham and Women's Hospital, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22628553" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Cell Line, Tumor ; *Cell Proliferation ; *Cell Transformation, Neoplastic ; Chromosome Mapping ; Genes, Essential ; *Genes, Neoplasm ; Genes, Recessive ; Genes, Tumor Suppressor ; *Haploinsufficiency ; Hemizygote ; Humans ; Models, Genetic ; Neoplasms/*genetics/*pathology ; Oncogenes ; *Sequence Deletion
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    SV40 and human cancer (1997)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1997-04-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hayflick, L -- New York, N.Y. -- Science. 1997 Apr 18;276(5311):337-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9139350" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; *Cell Transformation, Neoplastic ; *Cell Transformation, Viral ; Haplorhini ; Humans ; Poliovirus/growth & development ; *Poliovirus Vaccine, Inactivated ; Simian virus 40/*pathogenicity ; United States ; United States Food and Drug Administration ; Virus Cultivation
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    A mammalian telomerase-associated protein (1997)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1997-02-14
    Description: The telomerase ribonucleoprotein catalyzes the addition of new telomeres onto chromosome ends. A gene encoding a mammalian telomerase homolog called TP1 (telomerase-associated protein 1) was identified and cloned. TP1 exhibited extensive amino acid similarity to the Tetrahymena telomerase protein p80 and was shown to interact specifically with mammalian telomerase RNA. Antiserum to TP1 immunoprecipitated telomerase activity from cell extracts, suggesting that TP1 is associated with telomerase in vivo. The identification of TP1 suggests that telomerase-associated proteins are conserved from ciliates to humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harrington, L -- McPhail, T -- Mar, V -- Zhou, W -- Oulton, R -- Bass, M B -- Arruda, I -- Robinson, M O -- New York, N.Y. -- Science. 1997 Feb 14;275(5302):973-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Arruda, Ontario Cancer Institute-Amgen Institute, Department of Medical Biophysics, University of Toronto, 620 University Avenue, Toronto, Ontario M5G 2C1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9020079" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Blotting, Northern ; Carrier Proteins/*chemistry/genetics/immunology/*metabolism ; Cell Line ; Cloning, Molecular ; DNA, Complementary/genetics ; Humans ; Mice ; Molecular Sequence Data ; Precipitin Tests ; RNA/*metabolism ; RNA, Messenger/genetics/metabolism ; Sequence Homology, Amino Acid ; Telomerase/*chemistry/genetics/metabolism ; Tetrahymena/chemistry/genetics ; Transfection ; Tumor Cells, Cultured
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    NF-AT activation induced by a CAML-interacting member of the tumor necrosis factor receptor superfamily (1997)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1997-10-06
    Description: Activation of the nuclear factor of activated T cells transcription factor (NF-AT) is a key event underlying lymphocyte action. The CAML (calcium-modulator and cyclophilin ligand) protein is a coinducer of NF-AT activation when overexpressed in Jurkat T cells. A member of the tumor necrosis factor receptor superfamily was isolated by virtue of its affinity for CAML. Cross-linking of this lymphocyte-specific protein, designated TACI (transmembrane activator and CAML-interactor), on the surface of transfected Jurkat cells with TACI-specific antibodies led to activation of the transcription factors NF-AT, AP-1, and NFkappaB. TACI-induced activation of NF-AT was specifically blocked by a dominant-negative CAML mutant, thus implicating CAML as a signaling intermediate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉von Bulow, G U -- Bram, R J -- CA21765/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Oct 3;278(5335):138-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Experimental Oncology, St. Jude Children's Research Hospital, 332 North Lauderdale, Memphis, TN 38105, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9311921" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Calcineurin ; Calmodulin-Binding Proteins/metabolism ; Carrier Proteins/genetics/*metabolism ; Cell Line ; Cell Membrane/metabolism ; DNA-Binding Proteins/*metabolism ; Humans ; Jurkat Cells ; Lymphocyte Activation ; *Membrane Proteins ; Molecular Sequence Data ; Mutation ; NF-kappa B/metabolism ; NFATC Transcription Factors ; *Nuclear Proteins ; Phosphoprotein Phosphatases/metabolism ; Receptors, Tumor Necrosis Factor/chemistry/genetics/*metabolism ; Sequence Alignment ; Signal Transduction ; T-Lymphocytes/immunology/*metabolism ; Transcription Factor AP-1/metabolism ; Transcription Factors/*metabolism ; Transcription, Genetic ; Transfection ; Transmembrane Activator and CAML Interactor Protein
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  • 33
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    CD4-independent binding of SIV gp120 to rhesus CCR5 (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: CCR5 and CD4 are coreceptors for immunodeficiency virus entry into target cells. The gp120 envelope glycoprotein from human immunodeficiency virus strain HIV-1(YU2) bound human CCR5 (CCR5hu) or rhesus macaque CCR5 (CCR5rh) only in the presence of CD4. The gp120 from simian immunodeficiency virus strain SIVmac239 bound CCR5rh without CD4, but CCR5hu remained CD4-dependent. The CD4-independent binding of SIVmac239 gp120 depended on a single amino acid, Asp13, in the CCR5rh amino-terminus. Thus, CCR5-binding moieties on the immunodeficiency virus envelope glycoprotein can be generated by interaction with CD4 or by direct interaction with the CCR5 amino-terminus. These results may have implications for the evolution of receptor use among lentiviruses as well as utility in the development of effective intervention.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martin, K A -- Wyatt, R -- Farzan, M -- Choe, H -- Marcon, L -- Desjardins, E -- Robinson, J -- Sodroski, J -- Gerard, C -- Gerard, N P -- AI41581/AI/NIAID NIH HHS/ -- HL36162/HL/NHLBI NIH HHS/ -- HL51366/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 Nov 21;278(5342):1470-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Perlmutter Laboratory, Children's Hospital, Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9367961" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Monoclonal ; Antigens, CD4/*physiology ; Cell Line ; HIV Antibodies/immunology ; HIV Envelope Protein gp120/chemistry/*metabolism ; HIV-2/immunology ; Humans ; Macaca mulatta ; Macrophages/virology ; *Membrane Glycoproteins ; Mutation ; Receptors, CCR5/chemistry/*metabolism ; Simian Immunodeficiency Virus/*metabolism ; Transfection ; *Viral Envelope 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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  • 34
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    Inhibition of brain Gz GAP and other RGS proteins by palmitoylation of G protein alpha subunits (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-11-14
    Description: Palmitoylation of the alpha subunit of the guanine nucleotide-binding protein Gz inhibited by more than 90 percent its response to the guanosine triphosphatase (GTPase)-accelerating activity of Gz GAP, a Gz-selective member of the regulators of G-protein signaling (RGS) protein family of GTPase-activating proteins (GAPs). Palmitoylation both decreased the affinity of Gz GAP for the GTP-bound form of Galphaz by at least 90 percent and decreased the maximum rate of GTP hydrolysis. Inhibition was reversed by removal of the palmitoyl group by dithiothreitol. Palmitoylation of Galphaz also inhibited its response to the GAP activity of Galpha-interacting protein (GAIP), another RGS protein, and palmitoylation of Galphai1 inhibited its response to RGS4. The extent of inhibition of Gz GAP, GAIP, RGS4, and RGS10 correlated roughly with their intrinsic GAP activities for the Galpha target used in the assay. Reversible palmitoylation is thus a major determinant of Gz deactivation after its stimulation by receptors, and may be a general mechanism for prolonging or potentiating G-protein signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tu, Y -- Wang, J -- Ross, E M -- GM30355/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Nov 7;278(5340):1132-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75235-9041, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9353196" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Dithiothreitol/pharmacology ; *GTP-Binding Protein alpha Subunits ; GTP-Binding Proteins/*metabolism ; GTPase-Activating Proteins ; Guanosine 5'-O-(3-Thiotriphosphate)/metabolism ; Guanosine Triphosphate/metabolism ; *Heterotrimeric GTP-Binding Proteins ; Hydrolysis ; Kinetics ; Palmitic Acid/*metabolism ; Palmitoyl Coenzyme A/metabolism ; Phosphoproteins/antagonists & inhibitors/metabolism ; Proteins/*antagonists & inhibitors/metabolism ; *RGS Proteins ; Signal Transduction
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  • 35
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    Interleukin-3-induced phosphorylation of BAD through the protein kinase Akt (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-10-24
    Description: BAD is a distant member of the Bcl-2 family that promotes cell death. Phosphorylation of BAD prevents this. BAD phosphorylation induced by interleukin-3 (IL-3) was inhibited by specific inhibitors of phosphoinositide 3-kinase (PI 3-kinase). Akt, a survival-promoting serine-threonine protein kinase, was activated by IL-3 in a PI 3-kinase-dependent manner. Active, but not inactive, forms of Akt were found to phosphorylate BAD in vivo and in vitro at the same residues that are phosphorylated in response to IL-3. Thus, the proapoptotic function of BAD is regulated by the PI 3-kinase-Akt pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉del Peso, L -- Gonzalez-Garcia, M -- Page, C -- Herrera, R -- Nunez, G -- CA-64556/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Oct 24;278(5338):687-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, MI 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9381178" target="_blank"〉PubMed〈/a〉
    Keywords: Androstadienes/pharmacology ; Animals ; Apoptosis ; Carrier Proteins/*metabolism ; Cell Line ; Chromones/pharmacology ; Enzyme Activation ; Enzyme Inhibitors/pharmacology ; Humans ; Interleukin-3/*pharmacology ; Mice ; Morpholines/pharmacology ; Phosphatidylinositol 3-Kinases/antagonists & inhibitors/*metabolism ; Phosphorylation ; Phosphoserine/metabolism ; Protein-Serine-Threonine Kinases/*metabolism ; Proto-Oncogene Proteins/*metabolism ; Proto-Oncogene Proteins c-akt ; Proto-Oncogene Proteins c-bcl-2/metabolism ; Recombinant Proteins/metabolism ; Signal Transduction ; bcl-Associated Death Protein ; bcl-X Protein
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 36
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    Targeting of HIV- and SIV-infected cells by CD4-chemokine receptor pseudotypes (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: Retroviral vectors containing CD4 and an appropriate chemokine receptor were evaluated for the ability to transduce cells infected with human immunodeficiency virus (HIV) and simian immunodeficiency virus (SIV). These CD4-chemokine receptor pseudotypes were able to target HIV- and SIV-infected cell lines and monocyte-derived macrophages in a manner that corresponded to the specificity of the viral envelope glycoprotein for its CD4-chemokine receptor complex. This approach could offer a way to deliver antiviral genes directly to HIV-infected cells in vivo and could provide an additional treatment strategy in conjunction with existing antiviral therapies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Endres, M J -- Jaffer, S -- Haggarty, B -- Turner, J D -- Doranz, B J -- O'Brien, P J -- Kolson, D L -- Hoxie, J A -- AI33854/AI/NIAID NIH HHS/ -- AI40880/AI/NIAID NIH HHS/ -- HL 07439/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 Nov 21;278(5342):1462-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Hematology-Oncology Division, University of Pennsylvania, Philadelphia, PA 19104, USA. endres@mail.med.upenn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9367958" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD4/*genetics/metabolism ; Cell Line ; Gene Products, env/metabolism ; *Gene Transfer Techniques ; *Genetic Vectors ; HIV-1/*physiology ; Humans ; Macrophages/virology ; Plasmids ; Receptors, CCR5/genetics/metabolism ; Receptors, CXCR4/genetics/metabolism ; Receptors, Chemokine/*genetics/metabolism ; Simian Immunodeficiency Virus/*physiology ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 37
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    Activation of SAPK/JNK by TNF receptor 1 through a noncytotoxic TRAF2-dependent pathway (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-01-10
    Description: Interaction of the p55 tumor necrosis factor receptor 1 (TNF-R1)-associated signal transducer TRADD with FADD signals apoptosis, whereas the TNF receptor-associated factor 2 protein (TRAF2) is required for activation of the nuclear transcription factor nuclear factor kappa B. TNF-induced activation of the stress-activated protein kinase (SAPK) was shown to occur through a noncytotoxic TRAF2-dependent pathway. TRAF2 was both sufficient and necessary for activation of SAPK by TNF-R1; conversely, expression of a dominant-negative FADD mutant, which blocks apoptosis, did not interfere with SAPK activation. Therefore, SAPK activation occurs through a pathway that is not required for TNF-R1-induced apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Natoli, G -- Costanzo, A -- Ianni, A -- Templeton, D J -- Woodgett, J R -- Balsano, C -- Levrero, M -- New York, N.Y. -- Science. 1997 Jan 10;275(5297):200-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Fondazione Andrea Cesalpino and Istituto di I Clinica Medica, Policlinico Umberto I, Viale del Policlinico 155, 00161 Rome, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8985011" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcysteine/pharmacology ; *Adaptor Proteins, Signal Transducing ; Apoptosis ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Carrier Proteins/metabolism ; Cell Line ; Dactinomycin/pharmacology ; Enzyme Activation ; Fas-Associated Death Domain Protein ; Free Radical Scavengers/pharmacology ; HeLa Cells ; Humans ; JNK Mitogen-Activated Protein Kinases ; *MAP Kinase Kinase Kinase 1 ; *Mitogen-Activated Protein Kinases ; NF-kappa B/metabolism ; Protein-Serine-Threonine Kinases/metabolism ; Proteins/*metabolism ; Reactive Oxygen Species/metabolism ; Receptors, Tumor Necrosis Factor/*metabolism ; Recombinant Proteins/pharmacology ; Signal Transduction ; TNF Receptor-Associated Factor 1 ; TNF Receptor-Associated Factor 2 ; Transfection ; Tumor Necrosis Factor-alpha/*pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 38
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    Selective expression of the eotaxin receptor CCR3 by human T helper 2 cells (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-09-26
    Description: There is growing evidence that T helper cell subsets (TH1 and TH2) can be differentially recruited to promote different types of inflammatory reactions. Murine TH1 but not TH2 cells are recruited through P- and E-selectin into inflamed tissues, where they induce delayed-type hypersensitivity reactions. The human eotaxin-receptor CCR3, originally described on eosinophils and basophils, was also found to be expressed by TH2 cells. An antibody to CCR3 was used to isolate T cells from peripheral blood that give rise to TH2-polarized cell lines and to identify TH2 cells derived from naive T cells in vitro. Eotaxin stimulated increases in intracellular calcium and chemotaxis of CCR3(+) T cells. The attraction of TH2 cells by eotaxin could represent a key mechanism in allergic reactions, because it promotes the allergen-driven production of interleukin-4 and interleukin-5 necessary to activate basophils and eosinophils.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sallusto, F -- Mackay, C R -- Lanzavecchia, A -- New York, N.Y. -- Science. 1997 Sep 26;277(5334):2005-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Basel Institute for Immunology, Grenzacherstrasse 487, CH-4005 Basel, Switzerland. sallusto@bii.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9302298" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Calcium/metabolism ; Cell Line ; Cell Separation ; Chemokine CCL11 ; *Chemokines, CC ; Chemotaxis, Leukocyte ; Clone Cells ; Cytokines/metabolism/*pharmacology ; Humans ; Interferon-alpha/pharmacology ; Interferon-gamma/biosynthesis ; Interleukin-3/biosynthesis ; Interleukin-4/biosynthesis ; Receptors, CCR3 ; *Receptors, Chemokine ; Receptors, Cytokine/*metabolism ; Th2 Cells/*metabolism/*physiology ; Transforming Growth Factor beta/pharmacology
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  • 39
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    An animal model for acute and persistent Epstein-Barr virus infection (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-06-27
    Description: Epstein-Barr virus (EBV) is a human lymphocryptovirus that causes infectious mononucleosis, persists asymptomatically for life in nearly all adults, and is associated with the development of B cell lymphomas and nasopharyngeal carcinomas. A highly similar rhesus lymphocryptovirus naturally endemic in rhesus monkeys was used to orally infect naive animals from a pathogen-free colony. This animal model reproduced key aspects of human EBV infection, including oral transmission, atypical lymphocytosis, lymphadenopathy, activation of CD23(+) peripheral blood B cells, sustained serologic responses to lytic and latent EBV antigens, latent infection in the peripheral blood, and virus persistence in oropharyngeal secretions. This system may be useful for studying the pathogenesis, prevention, and treatment of EBV infection and associated oncogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moghaddam, A -- Rosenzweig, M -- Lee-Parritz, D -- Annis, B -- Johnson, R P -- Wang, F -- CA65319/CA/NCI NIH HHS/ -- CA68051/CA/NCI NIH HHS/ -- P51RR00168/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1997 Jun 27;276(5321):2030-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 181 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9197263" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Viral/blood ; B-Lymphocytes/immunology/virology ; Cell Line ; DNA, Viral/analysis ; *Disease Models, Animal ; *Herpesviridae Infections/immunology/pathology/virology ; *Herpesvirus 4, Human ; Humans ; Immunoenzyme Techniques ; *Lymphocryptovirus/immunology/isolation & purification ; Lymphocyte Activation ; *Macaca mulatta ; Mouth/virology ; Oropharynx/virology ; Receptors, IgE/blood ; Specific Pathogen-Free Organisms ; *Tumor Virus Infections/immunology/pathology/virology ; Virus Latency ; Virus Shedding
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 40
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    Regulation of distinct stages of skeletal muscle differentiation by mitogen-activated protein kinases (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-11-21
    Description: The signal transduction pathway or pathways linking extracellular signals to myogenesis are poorly defined. Upon mitogen withdrawal from C2C12 myoblasts, the mitogen-activated protein kinase (MAPK) p42Erk2 is inactivated concomitant with up-regulation of muscle-specific genes. Overexpression of MAPK phosphatase-1 (MKP-1) inhibited p42Erk2 activity and was sufficient to relieve the inhibitory effects of mitogens on muscle-specific gene expression. Later during myogenesis, endogenous expression of MKP-1 decreased. MKP-1 overexpression during differentiation prevented myotube formation despite appropriate expression of myosin heavy chain. This indicates that muscle-specific gene expression is necessary but not sufficient to commit differentiated myocytes to myotubes and suggests a function for the MAPKs during the early and late stages of skeletal muscle differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bennett, A M -- Tonks, N K -- New York, N.Y. -- Science. 1997 Nov 14;278(5341):1288-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Demerec Building, 1 Bungtown Road, Post Office Box 100, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9360925" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; *Cell Cycle Proteins ; Cell Differentiation ; Cell Division ; Cell Line ; Cloning, Molecular ; Culture Media ; Cyclin D1/genetics ; Dual Specificity Phosphatase 1 ; Gene Expression Regulation, Developmental ; Immediate-Early Proteins/genetics/*metabolism ; JNK Mitogen-Activated Protein Kinases ; Mice ; Mitogen-Activated Protein Kinase 1/antagonists & inhibitors/*metabolism ; *Mitogen-Activated Protein Kinases ; Mitogens/pharmacology ; Muscle Proteins/*genetics ; Muscle, Skeletal/*cytology/*enzymology/metabolism ; *Phosphoprotein Phosphatases ; Phosphorylation ; Protein Phosphatase 1 ; Protein Tyrosine Phosphatases/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Tetracycline/pharmacology ; Transcription, Genetic
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  • 41
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    Structure of the carboxyl-terminal dimerization domain of the HIV-1 capsid protein (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-11-05
    Description: The carboxyl-terminal domain, residues 146 to 231, of the human immunodeficiency virus-1 (HIV-1) capsid protein [CA(146-231)] is required for capsid dimerization and viral assembly. This domain contains a stretch of 20 residues, called the major homology region (MHR), which is conserved across retroviruses and is essential for viral assembly, maturation, and infectivity. The crystal structures of CA(146-231) and CA(151-231) reveal that the globular domain is composed of four helices and an extended amino-terminal strand. CA(146-231) dimerizes through parallel packing of helix 2 across a dyad. The MHR is distinct from the dimer interface and instead forms an intricate hydrogen-bonding network that interconnects strand 1 and helices 1 and 2. Alignment of the CA(146-231) dimer with the crystal structure of the capsid amino-terminal domain provides a model for the intact protein and extends models for assembly of the central conical core of HIV-1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gamble, T R -- Yoo, S -- Vajdos, F F -- von Schwedler, U K -- Worthylake, D K -- Wang, H -- McCutcheon, J P -- Sundquist, W I -- Hill, C P -- R01 AI40333/AI/NIAID NIH HHS/ -- R01 AI43036/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1997 Oct 31;278(5339):849-53.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Utah, Salt Lake City, UT 84132, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9346481" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Capsid/*chemistry/genetics ; Cell Line ; Cloning, Molecular ; Cloning, Organism ; Crystallography, X-Ray ; Dimerization ; HIV-1/*chemistry/genetics/physiology ; Humans ; Models, Molecular ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Peptidylprolyl Isomerase/chemistry ; *Protein Conformation ; Virus Replication
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  • 42
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    A critical role for tapasin in the assembly and function of multimeric MHC class I-TAP complexes (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-08-29
    Description: Newly assembled major histocompatibility complex (MHC) class I molecules, together with the endoplasmic reticulum chaperone calreticulin, interact with the transporter associated with antigen processing (TAP) through a molecule called tapasin. The molecular cloning of tapasin revealed it to be a transmembrane glycoprotein encoded by an MHC-linked gene. It is a member of the immunoglobulin superfamily with a probable cytoplasmic endoplasmic reticulum retention signal. Up to four MHC class I-tapasin complexes were found to bind to each TAP molecule. Expression of tapasin in a negative mutant human cell line (220) restored class I-TAP association and normal class I cell surface expression. Tapasin expression also corrected the defective recognition of virus-infected 220 cells by class I-restricted cytotoxic T cells, establishing a critical functional role for tapasin in MHC class I-restricted antigen processing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ortmann, B -- Copeman, J -- Lehner, P J -- Sadasivan, B -- Herberg, J A -- Grandea, A G -- Riddell, S R -- Tampe, R -- Spies, T -- Trowsdale, J -- Cresswell, P -- AI30581/AI/NIAID NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1997 Aug 29;277(5330):1306-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Section of Immunobiology, Yale University School of Medicine, 310 Cedar Street, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9271576" target="_blank"〉PubMed〈/a〉
    Keywords: ATP-Binding Cassette Transporters/*metabolism ; Amino Acid Sequence ; Antigen Presentation ; Antiporters/chemistry/genetics/*metabolism ; Calcium-Binding Proteins/metabolism ; Calreticulin ; Cell Line ; Cell Line, Transformed ; Chromosome Mapping ; Chromosomes, Human, Pair 6 ; Cloning, Molecular ; Dimerization ; Endoplasmic Reticulum/metabolism ; Genetic Linkage ; HLA Antigens/*metabolism ; Histocompatibility Antigens Class I/*metabolism ; Humans ; Immunoglobulin G/chemistry ; Immunoglobulins/chemistry/genetics/*metabolism ; Major Histocompatibility Complex/genetics ; Membrane Transport Proteins ; Molecular Sequence Data ; Ribonucleoproteins/metabolism ; Sequence Homology, Amino Acid ; T-Lymphocytes, Cytotoxic ; Tumor Cells, Cultured
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  • 43
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    Inhibition of HIV-1 infection by the beta-chemokine MDC (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 44
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    Induction of cell migration by matrix metalloprotease-2 cleavage of laminin-5 (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-07-11
    Description: Structural changes in the extracellular matrix are necessary for cell migration during tissue remodeling and tumor invasion. Specific cleavage of laminin-5 (Ln-5) by matrix metalloprotease-2 (MMP2) was shown to induce migration of breast epithelial cells. MMP2 cleaved the Ln-5 gamma2 subunit at residue 587, exposing a putative cryptic promigratory site on Ln-5 that triggers cell motility. This altered form of Ln-5 is found in tumors and in tissues undergoing remodeling, but not in quiescent tissues. Cleavage of Ln-5 by MMP2 and the resulting activation of the Ln-5 cryptic site may provide new targets for modulation of tumor cell invasion and tissue remodeling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giannelli, G -- Falk-Marzillier, J -- Schiraldi, O -- Stetler-Stevenson, W G -- Quaranta, V -- CA47858/CA/NCI NIH HHS/ -- DE10063/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 1997 Jul 11;277(5323):225-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9211848" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breast/*cytology/metabolism ; Cell Adhesion ; Cell Adhesion Molecules/*metabolism ; Cell Division ; Cell Line ; *Cell Movement ; Cell Size ; Collagenases/metabolism ; Epithelial Cells ; Epithelium/metabolism ; Extracellular Matrix/*metabolism ; Female ; Fibrinolysin/metabolism ; Gelatinases/antagonists & inhibitors/*metabolism ; Humans ; Matrix Metalloproteinase 2 ; Matrix Metalloproteinase 9 ; Metalloendopeptidases/antagonists & inhibitors/*metabolism ; Mice ; Phenylalanine/analogs & derivatives/pharmacology ; Protease Inhibitors/pharmacology ; Rats ; Recombinant Fusion Proteins/metabolism ; Skin Neoplasms/metabolism/pathology ; Thiophenes/pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 45
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    Potent inhibition of HIV-1 infectivity in macrophages and lymphocytes by a novel CCR5 antagonist (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    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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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 46
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    The receptor for the cytotoxic ligand TRAIL (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-04-04
    Description: TRAIL (also known as Apo-2L) is a member of the tumor necrosis factor (TNF) ligand family that rapidly induces apoptosis in a variety of transformed cell lines. The human receptor for TRAIL was found to be an undescribed member of the TNF-receptor family (designated death receptor-4, DR4) that contains a cytoplasmic "death domain" capable of engaging the cell suicide apparatus but not the nuclear factor kappa B pathway in the system studied. Unlike Fas, TNFR-1, and DR3, DR4 could not use FADD to transmit the death signal, suggesting the use of distinct proximal signaling machinery. Thus, the DR4-TRAIL axis defines another receptor-ligand pair involved in regulating cell suicide and tissue homeostasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pan, G -- O'Rourke, K -- Chinnaiyan, A M -- Gentz, R -- Ebner, R -- Ni, J -- Dixit, V M -- DAMD17-96-1-6085/DA/NIDA NIH HHS/ -- ES08111/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1997 Apr 4;276(5309):111-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9082980" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; *Apoptosis ; Apoptosis Regulatory Proteins ; Carrier Proteins/metabolism ; Cell Line ; Fas-Associated Death Domain Protein ; Humans ; Ligands ; Membrane Glycoproteins/*metabolism ; Molecular Sequence Data ; NF-kappa B/metabolism ; Proteins/metabolism ; RNA, Messenger/genetics/metabolism ; Receptor-Interacting Protein Serine-Threonine Kinases ; Receptors, TNF-Related Apoptosis-Inducing Ligand ; Receptors, Tumor Necrosis Factor/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; TNF Receptor-Associated Factor 1 ; TNF-Related Apoptosis-Inducing Ligand ; Transfection ; Tumor Cells, Cultured ; Tumor Necrosis Factor-alpha/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 47
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    Defective TNF-alpha-induced apoptosis in STAT1-null cells due to low constitutive levels of caspases (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: Signal transducers and activators of transcription (STATs) enhance transcription of specific genes in response to cytokines and growth factors. STAT1 is also required for efficient constitutive expression of the caspases Ice, Cpp32, and Ich-1 in human fibroblasts. As a consequence, STAT1-null cells are resistant to apoptosis by tumor necrosis factor alpha (TNF-alpha). Reintroduction of STAT1alpha restored both TNF-alpha-induced apoptosis and the expression of Ice, Cpp32, and Ich-1. Variant STAT1 proteins carrying point mutations that inactivate domains required for STAT dimer formation nevertheless restored protease expression and sensitivity to apoptosis, indicating that the functions of STAT1 required for these activities are different from those that mediate induced gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kumar, A -- Commane, M -- Flickinger, T W -- Horvath, C M -- Stark, G R -- P01 CA62220/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Nov 28;278(5343):1630-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9374464" target="_blank"〉PubMed〈/a〉
    Keywords: *Apoptosis ; Caspase 1 ; Caspase 2 ; Caspase 3 ; *Caspases ; Cell Line ; Cysteine Endopeptidases/genetics/*metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Dactinomycin/pharmacology ; Dimerization ; Gene Expression Regulation, Enzymologic ; Humans ; Interferon-gamma/pharmacology ; Phosphorylation ; Point Mutation ; Proteins/genetics/*metabolism ; STAT1 Transcription Factor ; Signal Transduction ; Trans-Activators/chemistry/genetics/*metabolism ; Transfection ; Tumor Necrosis Factor-alpha/*pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 48
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    A TEL-JAK2 fusion protein with constitutive kinase activity in human leukemia (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-11-21
    Description: The Janus family of tyrosine kinases (JAK) plays an essential role in development and in coupling cytokine receptors to downstream intracellular signaling events. A t(9;12)(p24;p13) chromosomal translocation in a T cell childhood acute lymphoblastic leukemia patient was characterized and shown to fuse the 3' portion of JAK2 to the 5' region of TEL, a gene encoding a member of the ETS transcription factor family. The TEL-JAK2 fusion protein includes the catalytic domain of JAK2 and the TEL-specific oligomerization domain. TEL-induced oligomerization of TEL-JAK2 resulted in the constitutive activation of its tyrosine kinase activity and conferred cytokine-independent proliferation to the interleukin-3-dependent Ba/F3 hematopoietic cell line.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lacronique, V -- Boureux, A -- Valle, V D -- Poirel, H -- Quang, C T -- Mauchauffe, M -- Berthou, C -- Lessard, M -- Berger, R -- Ghysdael, J -- Bernard, O A -- New York, N.Y. -- Science. 1997 Nov 14;278(5341):1309-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉U 301 de l'Institut National de la Sante et de la Recherche Medicale and SD 401 No. 301 CNRS, Institut de Genetique Moleculaire, 27 rue Juliette Dodu, 75010 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9360930" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Biopolymers ; Cell Division ; Cell Line ; Child, Preschool ; DNA-Binding Proteins/chemistry/genetics/metabolism ; Enzyme Activation ; Humans ; Interleukin-3/physiology ; Janus Kinase 2 ; Leukemia-Lymphoma, Adult T-Cell/genetics/*metabolism ; Male ; Mice ; *Milk Proteins ; Molecular Sequence Data ; Oncogene Proteins, Fusion/chemistry/genetics/*metabolism ; Phosphorylation ; Protein-Tyrosine Kinases/chemistry/genetics/*metabolism ; *Proto-Oncogene Proteins ; Proto-Oncogene Proteins c-ets ; *Repressor Proteins ; STAT5 Transcription Factor ; Signal Transduction ; Trans-Activators/metabolism ; Transcription Factors/chemistry/genetics/metabolism ; Transfection ; Translocation, Genetic
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  • 49
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    Phosphorylation of the translational repressor PHAS-I by the mammalian target of rapamycin (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-07-04
    Description: The immunosuppressant rapamycin interferes with G1-phase progression in lymphoid and other cell types by inhibiting the function of the mammalian target of rapamycin (mTOR). mTOR was determined to be a terminal kinase in a signaling pathway that couples mitogenic stimulation to the phosphorylation of the eukaryotic initiation factor (eIF)-4E-binding protein, PHAS-I. The rapamycin-sensitive protein kinase activity of mTOR was required for phosphorylation of PHAS-I in insulin-stimulated human embryonic kidney cells. mTOR phosphorylated PHAS-I on serine and threonine residues in vitro, and these modifications inhibited the binding of PHAS-I to eIF-4E. These studies define a role for mTOR in translational control and offer further insights into the mechanism whereby rapamycin inhibits G1-phase progression in mammalian cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brunn, G J -- Hudson, C C -- Sekulic, A -- Williams, J M -- Hosoi, H -- Houghton, P J -- Lawrence, J C Jr -- Abraham, R T -- AR41189/AR/NIAMS NIH HHS/ -- DK28312/DK/NIDDK NIH HHS/ -- DK50628/DK/NIDDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 Jul 4;277(5322):99-101.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9204908" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Androstadienes/pharmacology ; Animals ; Carrier Proteins/pharmacology ; Cell Line ; DNA-Binding Proteins/pharmacology ; Eukaryotic Initiation Factor-4E ; G1 Phase ; Heat-Shock Proteins/pharmacology ; Humans ; Insulin/pharmacology ; Peptide Initiation Factors/metabolism ; Phosphoproteins/genetics/*metabolism ; Phosphorylation ; Phosphotransferases (Alcohol Group Acceptor)/antagonists & inhibitors/*metabolism ; Polyenes/*pharmacology ; *Protein Kinases ; Rats ; Recombinant Proteins/metabolism ; Repressor Proteins/genetics/*metabolism ; Signal Transduction ; Sirolimus ; TOR Serine-Threonine Kinases ; Tacrolimus Binding Proteins ; Transfection ; Tumor Cells, Cultured
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 50
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    Differential effects of cytolytic T cell subsets on intracellular infection (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-06-13
    Description: In analyzing mechanisms of protection against intracellular infections, a series of human CD1-restricted T cell lines of two distinct phenotypes were derived. Both CD4(-)CD8(-) (double-negative) T cells and CD8(+) T cells efficiently lysed macrophages infected with Mycobacterium tuberculosis. The cytotoxicity of CD4(-)CD8(-) T cells was mediated by Fas-FasL interaction and had no effect on the viability of the mycobacteria. The CD8(+) T cells lysed infected macrophages by a Fas-independent, granule-dependent mechanism that resulted in killing of bacteria. These data indicate that two phenotypically distinct subsets of human cytolytic T lymphocytes use different mechanisms to kill infected cells and contribute in different ways to host defense against intracellular infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stenger, S -- Mazzaccaro, R J -- Uyemura, K -- Cho, S -- Barnes, P F -- Rosat, J P -- Sette, A -- Brenner, M B -- Porcelli, S A -- Bloom, B R -- Modlin, R L -- New York, N.Y. -- Science. 1997 Jun 13;276(5319):1684-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of California Los Angeles School of Medicine, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9180075" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, CD1/*immunology ; Antigens, CD95/immunology/metabolism ; Cell Line ; Coculture Techniques ; Colony Count, Microbial ; Cytoplasmic Granules/immunology ; *Cytotoxicity, Immunologic ; Fas Ligand Protein ; Granzymes ; Humans ; Lymphocyte Activation ; Macrophages/*immunology/microbiology ; Membrane Glycoproteins/genetics/immunology/metabolism ; Mycobacterium tuberculosis/growth & development/*immunology ; Perforin ; Phenotype ; Pore Forming Cytotoxic Proteins ; Serine Endopeptidases/metabolism ; Strontium/pharmacology ; T-Lymphocyte Subsets/*immunology ; T-Lymphocytes, Cytotoxic/*immunology
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  • 51
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    Regulation of NF-kappaB by cyclin-dependent kinases associated with the p300 coactivator (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-01-24
    Description: The nuclear factor kappaB (NF-kappaB) transcription factor is responsive to specific cytokines and stress and is often activated in association with cell damage and growth arrest in eukaryotes. NF-kappaB is a heterodimeric protein, typically composed of 50- and 65-kilodalton subunits of the Rel family, of which RelA(p65) stimulates transcription of diverse genes. Specific cyclin-dependent kinases (CDKs) were found to regulate transcriptional activation by NF-kappaB through interactions with the coactivator p300. The transcriptional activation domain of RelA(p65) interacted with an amino-terminal region of p300 distinct from a carboxyl-terminal region of p300 required for binding to the cyclin E-Cdk2 complex. The CDK inhibitor p21 or a dominant negative Cdk2, which inhibited p300-associated cyclin E-Cdk2 activity, stimulated kappaB-dependent gene expression, which was also enhanced by expression of p300 in the presence of p21. The interaction of NF-kappaB and CDKs through the p300 and CBP coactivators provides a mechanism for the coordination of transcriptional activation with cell cycle progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Perkins, N D -- Felzien, L K -- Betts, J C -- Leung, K -- Beach, D H -- Nabel, G J -- R01 AI29179/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1997 Jan 24;275(5299):523-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of Michigan Medical Center, 4520 MSRB I, 1150 West Medical Center Drive, Ann Arbor, MI 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8999795" target="_blank"〉PubMed〈/a〉
    Keywords: *CDC2-CDC28 Kinases ; Cell Cycle ; Cell Line ; Cyclin-Dependent Kinase 2 ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclin-Dependent Kinases/genetics/*metabolism ; Cyclins/genetics/metabolism ; Genes, Reporter ; Humans ; Jurkat Cells ; NF-kappa B/genetics/*metabolism ; Nuclear Proteins/genetics/*metabolism ; Phosphorylation ; Protein Kinases/metabolism ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; *Trans-Activators ; Transcription Factor RelA ; Transcription Factors/genetics/*metabolism ; *Transcriptional Activation ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 52
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    Specific inhibition of Stat3 signal transduction by PIAS3 (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: The signal transducer and activator of transcription-3 (Stat3) protein is activated by the interleukin 6 (IL-6) family of cytokines, epidermal growth factor, and leptin. A protein named PIAS3 (protein inhibitor of activated STAT) that binds to Stat3 was isolated and characterized. The association of PIAS3 with Stat3 in vivo was only observed in cells stimulated with ligands that cause the activation of Stat3. PIAS3 blocked the DNA-binding activity of Stat3 and inhibited Stat3-mediated gene activation. Although Stat1 is also phosphorylated in response to IL-6, PIAS3 did not interact with Stat1 or affect its DNA-binding or transcriptional activity. The results indicate that PIAS3 is a specific inhibitor of Stat3.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chung, C D -- Liao, J -- Liu, B -- Rao, X -- Jay, P -- Berta, P -- Shuai, K -- AI39612/AI/NIAID NIH HHS/ -- T32CA09056/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Dec 5;278(5344):1803-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, University of California, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9388184" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carrier Proteins/chemistry/genetics/*metabolism/pharmacology ; Cell Line ; DNA/metabolism ; DNA-Binding Proteins/genetics/*metabolism ; Gene Expression Regulation ; Humans ; Interferon Regulatory Factor-1 ; Interferon-alpha/pharmacology ; Interleukin-6/pharmacology ; *Intracellular Signaling Peptides and Proteins ; Mice ; Molecular Sequence Data ; NF-kappa B/metabolism ; Phosphoproteins/genetics ; Phosphorylation ; Phosphotyrosine/metabolism ; Protein Inhibitors of Activated STAT ; Recombinant Fusion Proteins/pharmacology ; STAT1 Transcription Factor ; STAT3 Transcription Factor ; *Signal Transduction ; Trans-Activators/*metabolism ; Transcriptional Activation ; Transfection ; Tumor Cells, Cultured ; Tumor Necrosis Factor-alpha/pharmacology
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  • 53
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    Inhibition of invasion of epithelial cells by Tiam1-Rac signaling (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: Tiam1 encodes an exchange factor for the Rho-like guanosine triphosphatase Rac. Both Tiam1 and activated RacV12 promote invasiveness of T lymphoma cells. In epithelial Madin-Darby canine kidney (MDCK) cells, Tiam1 localized to adherens junctions. Ectopic expression of Tiam1 or RacV12 inhibited hepatocyte growth factor-induced scattering by increasing E-cadherin-mediated cell-cell adhesion accompanied by actin polymerization at cell-cell contacts. In Ras-transformed MDCK cells, expression of Tiam1 or RacV12 restored E-cadherin-mediated adhesion, resulting in phenotypic reversion and loss of invasiveness. These data suggest an invasion-suppressor role for Tiam1 and Rac in epithelial cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hordijk, P L -- ten Klooster, J P -- van der Kammen, R A -- Michiels, F -- Oomen, L C -- Collard, J G -- New York, N.Y. -- Science. 1997 Nov 21;278(5342):1464-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9367959" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Animals ; Cadherins/metabolism ; *Cell Adhesion ; Cell Line ; Cell Line, Transformed ; Cell Movement ; Cell Transformation, Neoplastic ; Cytoplasm/metabolism ; Epithelial Cells/*cytology/metabolism ; GTP-Binding Proteins/*metabolism ; Hepatocyte Growth Factor/pharmacology ; Intercellular Junctions/*metabolism ; *Neoplasm Invasiveness ; Phenotype ; Proteins/genetics/*metabolism ; Signal Transduction ; rac GTP-Binding Proteins
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  • 54
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    Requirement for the CD95 receptor-ligand pathway in c-Myc-induced apoptosis (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    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
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  • 55
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    Induction of apoptosis by ASK1, a mammalian MAPKKK that activates SAPK/JNK and p38 signaling pathways (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-01-03
    Description: Mitogen-activated protein (MAP) kinase cascades are activated in response to various extracellular stimuli, including growth factors and environmental stresses. A MAP kinase kinase kinase (MAPKKK), termed ASK1, was identified that activated two different subgroups of MAP kinase kinases (MAPKK), SEK1 (or MKK4) and MKK3/MAPKK6 (or MKK6), which in turn activated stress-activated protein kinase (SAPK, also known as JNK; c-Jun amino-terminal kinase) and p38 subgroups of MAP kinases, respectively. Overexpression of ASK1 induced apoptotic cell death, and ASK1 was activated in cells treated with tumor necrosis factor-alpha (TNF-alpha). Moreover, TNF-alpha-induced apoptosis was inhibited by a catalytically inactive form of ASK1. ASK1 may be a key element in the mechanism of stress- and cytokine-induced apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ichijo, H -- Nishida, E -- Irie, K -- ten Dijke, P -- Saitoh, M -- Moriguchi, T -- Takagi, M -- Matsumoto, K -- Miyazono, K -- Gotoh, Y -- New York, N.Y. -- Science. 1997 Jan 3;275(5296):90-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, The Cancer Institute, Tokyo, Japanese Foundation for Cancer Research, 1-37-1 Kami-Ikebukuro, Toshima-ku, Tokyo 170, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8974401" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Apoptosis ; COS Cells ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Division ; Cell Line ; Cell Survival ; Enzyme Activation ; JNK Mitogen-Activated Protein Kinases ; MAP Kinase Kinase 6 ; MAP Kinase Kinase Kinases ; *Mitogen-Activated Protein Kinase Kinases ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Phosphorylation ; Polymerase Chain Reaction ; Protein-Serine-Threonine Kinases/chemistry/*metabolism ; Protein-Tyrosine Kinases/metabolism ; Recombinant Proteins/metabolism ; Saccharomyces cerevisiae/genetics/growth & development/metabolism ; *Signal Transduction ; Transfection ; Tumor Necrosis Factor-alpha/pharmacology ; p38 Mitogen-Activated Protein Kinases
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    Binding of neuroligins to PSD-95 (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-09-05
    Description: PSD-95 is a component of postsynaptic densities in central synapses. It contains three PDZ domains that localize N-methyl-D-aspartate receptor subunit 2 (NMDA2 receptor) and K+ channels to synapses. In mouse forebrain, PSD-95 bound to the cytoplasmic COOH-termini of neuroligins, which are neuronal cell adhesion molecules that interact with beta-neurexins and form intercellular junctions. Neuroligins bind to the third PDZ domain of PSD-95, whereas NMDA2 receptors and K+ channels interact with the first and second PDZ domains. Thus different PDZ domains of PSD-95 are specialized for distinct functions. PSD-95 may recruit ion channels and neurotransmitter receptors to intercellular junctions formed between neurons by neuroligins and beta-neurexins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Irie, M -- Hata, Y -- Takeuchi, M -- Ichtchenko, K -- Toyoda, A -- Hirao, K -- Takai, Y -- Rosahl, T W -- Sudhof, T C -- R01-MH52804/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1997 Sep 5;277(5331):1511-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Takai Biotimer Project, ERATO, Japan Science and Technology Corporation, 2-2-10, Murotani, Nishi-ku, Kobe, 651-22, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9278515" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; COS Cells ; *Calcium-Calmodulin-Dependent Protein Kinases ; Cell Adhesion Molecules, Neuronal ; Cell Line ; Cell Membrane/metabolism ; Cytoplasm/metabolism ; Guanylate Kinase ; Intercellular Junctions/metabolism ; Intracellular Signaling Peptides and Proteins ; Membrane Proteins/chemistry/*metabolism ; Mice ; Molecular Sequence Data ; Nerve Tissue Proteins/chemistry/*metabolism ; Neurons/*metabolism ; Nucleoside-Phosphate Kinase/metabolism ; Potassium Channels/metabolism ; Prosencephalon/*metabolism ; Receptors, N-Methyl-D-Aspartate/metabolism ; Recombinant Fusion Proteins/metabolism ; Tumor Suppressor Proteins
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    Activation of the G protein Gq/11 through tyrosine phosphorylation of the alpha subunit (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-06-20
    Description: Various receptors coupled to the heterotrimeric guanine nucleotide-binding protein Gq/11 stimulate formation of inositol-1,4,5-trisphosphate (IP3). Activation of these receptors also induces protein tyrosine phosphorylation. Formation of IP3 in response to stimulated receptors that couple to Gq/11 was blocked by protein tyrosine kinase inhibitors. These inhibitors appeared to act before activation of Gq/11. Moreover, stimulation of receptors coupled to Gq/11 induced phosphorylation on a tyrosine residue (Tyr356) of the Galphaq/11 subunit, and this tyrosine phosphorylation event was essential for Gq/11 activation. Tyrosine phosphorylation of Galphaq/11 induced changes in its interaction with receptors. Therefore, tyrosine phosphorylation of Galphaq/11 appears to regulate the activation of Gq/11 protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Umemori, H -- Inoue, T -- Kume, S -- Sekiyama, N -- Nagao, M -- Itoh, H -- Nakanishi, S -- Mikoshiba, K -- Yamamoto, T -- New York, N.Y. -- Science. 1997 Jun 20;276(5320):1878-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Oncology, Institute of Medical Science, University of Tokyo, Tokyo 108, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9188537" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CHO Cells ; Calcium/metabolism ; Carbachol/pharmacology ; Cell Line ; Cricetinae ; Enzyme Inhibitors/pharmacology ; GTP-Binding Proteins/*metabolism ; Genistein ; Inositol 1,4,5-Trisphosphate/metabolism ; Isoflavones/pharmacology ; Phosphorylation ; Phosphotyrosine/*metabolism ; Protein-Tyrosine Kinases/antagonists & inhibitors/metabolism ; Receptors, Cholinergic/*metabolism ; Receptors, Metabotropic Glutamate/*metabolism ; Signal Transduction
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    A new player in cell death (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoey, T -- New York, N.Y. -- Science. 1997 Nov 28;278(5343):1578-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Tularik, South San Francisco, CA 94080, USA. hoey@tularik.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9411781" target="_blank"〉PubMed〈/a〉
    Keywords: *Apoptosis ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Caspase 1 ; Cell Line ; Cysteine Endopeptidases/metabolism ; DNA-Binding Proteins/chemistry/genetics/metabolism/*physiology ; Gene Expression Regulation ; Gene Expression Regulation, Enzymologic ; Humans ; Interferon Regulatory Factor-1 ; Interferon-gamma/pharmacology ; Models, Genetic ; Mutation ; Phosphoproteins/metabolism ; Phosphorylation ; STAT1 Transcription Factor ; *Signal Transduction ; Trans-Activators/chemistry/genetics/*physiology ; Transcription Factors/metabolism ; Tumor Necrosis Factor-alpha/pharmacology
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    Stem cells in the central nervous system (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    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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    Stabilization of beta-catenin by genetic defects in melanoma cell lines (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-03-21
    Description: Signal transduction by beta-catenin involves its posttranslational stabilization and downstream coupling to the Lef and Tcf transcription factors. Abnormally high amounts of beta-catenin were detected in 7 of 26 human melanoma cell lines. Unusual messenger RNA splicing and missense mutations in the beta-catenin gene (CTNNB1) that result in stabilization of the protein were identified in six of the lines, and the adenomatous polyposis coli tumor suppressor protein (APC) was altered or missing in two others. In the APC-deficient cells, ectopic expression of wild-type APC eliminated the excess beta-catenin. Cells with stabilized beta-catenin contained a constitutive beta-catenin-Lef-1 complex. Thus, genetic defects that result in up-regulation of beta-catenin may play a role in melanoma progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rubinfeld, B -- Robbins, P -- El-Gamil, M -- Albert, I -- Porfiri, E -- Polakis, P -- 1R43CA69931/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1997 Mar 21;275(5307):1790-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Onyx Pharmaceuticals, 3031 Research Drive, Richmond, CA 94806, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9065403" target="_blank"〉PubMed〈/a〉
    Keywords: Adenomatous Polyposis Coli Protein ; Animals ; Cell Line ; Cytoskeletal Proteins/chemistry/*genetics/metabolism ; DNA-Binding Proteins/metabolism ; *Gene Expression Regulation, Neoplastic ; *Genes, APC ; Humans ; Lymphoid Enhancer-Binding Factor 1 ; Melanoma/*genetics/metabolism ; Mice ; Mutation ; Point Mutation ; RNA Splicing ; RNA, Messenger/genetics ; RNA, Neoplasm/genetics ; *Trans-Activators ; Transcription Factors/metabolism ; Transfection ; Tumor Cells, Cultured ; Up-Regulation ; beta Catenin
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    IRAK (Pelle) family member IRAK-2 and MyD88 as proximal mediators of IL-1 signaling (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-12-31
    Description: The interleukin-1 receptor (IL-1R) signaling pathway leads to nuclear factor kappa B (NF-kappaB) activation in mammals and is similar to the Toll pathway in Drosophila: the IL-1R-associated kinase (IRAK) is homologous to Pelle. Two additional proximal mediators were identified that are required for IL-1R-induced NF-kappaB activation: IRAK-2, a Pelle family member, and MyD88, a death domain-containing adapter molecule. Both associate with the IL-1R signaling complex. Dominant negative forms of either attenuate IL-1R-mediated NF-kappaB activation. Therefore, IRAK-2 and MyD88 may provide additional therapeutic targets for inhibiting IL-1-induced inflammation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Muzio, M -- Ni, J -- Feng, P -- Dixit, V M -- New York, N.Y. -- Science. 1997 Nov 28;278(5343):1612-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Michigan Medical School, Department of Pathology, Ann Arbor, MI 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9374458" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; *Antigens, Differentiation ; Carrier Proteins/metabolism ; Cell Line ; *Drosophila Proteins ; Humans ; Interleukin-1/*metabolism ; Interleukin-1 Receptor-Associated Kinases ; Molecular Sequence Data ; Myeloid Differentiation Factor 88 ; NF-kappa B/metabolism ; Protein Kinases/metabolism ; Protein-Serine-Threonine Kinases/chemistry/metabolism ; Proteins/chemistry/genetics/*metabolism ; *Receptors, Immunologic ; Receptors, Interleukin-1/*metabolism ; Sequence Alignment ; Sequence Homology, Amino Acid ; *Signal Transduction ; TNF Receptor-Associated Factor 6 ; Transfection
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    IkappaB kinase-beta: NF-kappaB activation and complex formation with IkappaB kinase-alpha and NIK (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-11-05
    Description: Activation of the transcription factor nuclear factor kappa B (NF-kappaB) by inflammatory cytokines requires the successive action of NF-kappaB-inducing kinase (NIK) and IkappaB kinase-alpha (IKK-alpha). A widely expressed protein kinase was identified that is 52 percent identical to IKK-alpha. IkappaB kinase-beta (IKK-beta) activated NF-kappaB when overexpressed and phosphorylated serine residues 32 and 36 of IkappaB-alpha and serines 19 and 23 of IkappaB-beta. The activity of IKK-beta was stimulated by tumor necrosis factor and interleukin-1 treatment. IKK-alpha and IKK-beta formed heterodimers that interacted with NIK. Overexpression of a catalytically inactive form of IKK-beta blocked cytokine-induced NF-kappaB activation. Thus, an active IkappaB kinase complex may require three distinct protein kinases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woronicz, J D -- Gao, X -- Cao, Z -- Rothe, M -- Goeddel, D V -- New York, N.Y. -- Science. 1997 Oct 31;278(5339):866-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Tularik, Two Corporate Drive, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9346485" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Line ; Cytokines/metabolism ; Enzyme Activation ; Genes, Reporter ; HeLa Cells ; Humans ; I-kappa B Kinase ; Molecular Sequence Data ; NF-kappa B/*metabolism ; Phosphorylation ; Protein-Serine-Threonine Kinases/*metabolism ; Sequence Homology, Amino Acid ; Transfection
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    A broad-spectrum chemokine antagonist encoded by Kaposi's sarcoma-associated herpesvirus (1997)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1997-09-12
    Description: Kaposi's sarcoma-associated herpesvirus encodes a chemokine called vMIP-II. This protein displayed a broader spectrum of receptor activities than any mammalian chemokine as it bound with high affinity to a number of both CC and CXC chemokine receptors. Binding of vMIP-II, however, was not associated with the normal, rapid mobilization of calcium from intracellular stores; instead, it blocked calcium mobilization induced by endogenous chemokines. In freshly isolated human monocytes the virally encoded vMIP-II acted as a potent and efficient antagonist of chemotaxis induced by chemokines. Because vMIP-II could inhibit cell entry of human immunodeficiency virus (HIV) mediated through CCR3 and CCR5 as well as CXCR4, this protein may serve as a lead for development of broad-spectrum anti-HIV agents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kledal, T N -- Rosenkilde, M M -- Coulin, F -- Simmons, G -- Johnsen, A H -- Alouani, S -- Power, C A -- Luttichau, H R -- Gerstoft, J -- Clapham, P R -- Clark-Lewis, I -- Wells, T N -- Schwartz, T W -- New York, N.Y. -- Science. 1997 Sep 12;277(5332):1656-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Molecular Pharmacology, Institute of Pharmacology, Panum Institute, University of Copenhagen, DK-2200 Copenhagen, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9287217" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium/metabolism ; Cell Line ; Chemokine CCL5/antagonists & inhibitors ; Chemokines/*antagonists & inhibitors/chemistry/genetics/*metabolism/pharmacology ; Chemotaxis, Leukocyte ; HIV-1/physiology ; Herpesvirus 8, Human/*genetics ; Humans ; Molecular Sequence Data ; Monocytes/cytology ; Receptors, Cytokine/antagonists & inhibitors/*metabolism ; Receptors, HIV/antagonists & inhibitors/*metabolism ; Recombinant Proteins/pharmacology ; Signal Transduction
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    Differential ligand activation of estrogen receptors ERalpha and ERbeta at AP1 sites (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-09-05
    Description: The transactivation properties of the two estrogen receptors, ERalpha and ERbeta, were examined with different ligands in the context of an estrogen response element and an AP1 element. ERalpha and ERbeta were shown to signal in opposite ways when complexed with the natural hormone estradiol from an AP1 site: with ERalpha, 17beta-estradiol activated transcription, whereas with ERbeta, 17beta-estradiol inhibited transcription. Moreover, the antiestrogens tamoxifen, raloxifene, and Imperial Chemical Industries 164384 were potent transcriptional activators with ERbeta at an AP1 site. Thus, the two ERs signal in different ways depending on ligand and response element. This suggests that ERalpha and ERbeta may play different roles in gene regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paech, K -- Webb, P -- Kuiper, G G -- Nilsson, S -- Gustafsson, J -- Kushner, P J -- Scanlan, T S -- GM 50672/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Sep 5;277(5331):1508-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmaceutical Chemistry, University of California, San Francisco, CA 94143-0446, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9278514" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breast Neoplasms/metabolism ; Cell Line ; Diethylstilbestrol/metabolism/pharmacology ; *Enhancer Elements, Genetic ; Estradiol/analogs & derivatives/metabolism/pharmacology ; Estrogen Antagonists/*pharmacology ; Estrogen Receptor alpha ; Estrogen Receptor beta ; Estrogens/*pharmacology ; Female ; HeLa Cells ; Humans ; Ligands ; Piperidines/metabolism/pharmacology ; Polyunsaturated Alkamides ; Raloxifene Hydrochloride ; Rats ; Receptors, Estrogen/*metabolism ; Tamoxifen/metabolism/pharmacology ; Transcription Factor AP-1/*genetics ; *Transcriptional Activation/drug effects ; Transfection ; Tumor Cells, Cultured ; Uterus/metabolism
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    Repression of c-myc transcription by Blimp-1, an inducer of terminal B cell differentiation (1997)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1997-04-25
    Description: Transcription of c-myc in plasma cells, which are terminally differentiated B cells, is repressed by plasmacytoma repressor factor. This factor was identified as Blimp-1, known for its ability to induce B cell differentiation. Blimp-1 repressed c-myc promoter activity in a binding site-dependent manner. Treatment of BCL1 lymphoma cells with interleukin-2 (IL-2) plus IL-5 induced Blimp-1 and caused a subsequent decline in c-Myc protein. Ectopic expression of Blimp-1 in Abelson-transformed precursor B cells repressed endogenous c-Myc and caused apoptosis; Blimp-1-induced death was partially overcome by ectopic expression of c-Myc. Thus, repression of c-myc is a component of the Blimp-1 program of terminal B cell differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, Y -- Wong, K -- Calame, K -- New York, N.Y. -- Science. 1997 Apr 25;276(5312):596-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9110979" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; B-Lymphocytes/*cytology/metabolism ; Binding Sites ; Cell Differentiation ; Cell Line ; Gene Expression Regulation ; *Genes, myc ; Interleukin-2/pharmacology ; Interleukin-5/pharmacology ; Mice ; Mutagenesis, Site-Directed ; Plasmacytoma ; Promoter Regions, Genetic ; *Repressor Proteins ; Transcription Factors/genetics/*metabolism ; *Transcription, Genetic ; Transfection ; Tumor Cells, Cultured ; Zinc Fingers
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    STAT3 as an adapter to couple phosphatidylinositol 3-kinase to the IFNAR1 chain of the type I interferon receptor (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-05-30
    Description: STAT (signal transducers and activators of transcription) proteins undergo cytokine-dependent phosphorylation on serine and tyrosine. STAT3, a transcription factor for acute phase response genes, was found to act as an adapter molecule in signal transduction from the type I interferon receptor. STAT3 bound to a conserved sequence in the cytoplasmic tail of the IFNAR1 chain of the receptor and underwent interferon-dependent tyrosine phosphorylation. The p85 regulatory subunit of phosphatidylinositol 3-kinase, which activates a series of serine kinases, bound to phosphorylated STAT3 and subsequently underwent tyrosine phosphorylation. Thus, STAT3 acts as an adapter to couple another signaling pathway to the interferon receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pfeffer, L M -- Mullersman, J E -- Pfeffer, S R -- Murti, A -- Shi, W -- Yang, C H -- New York, N.Y. -- Science. 1997 May 30;276(5317):1418-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Tennessee Health Science Center, Memphis, TN 38163, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9162009" target="_blank"〉PubMed〈/a〉
    Keywords: Acute-Phase Proteins/*genetics ; Amino Acid Sequence ; Androstadienes/pharmacology ; Animals ; Binding Sites ; COS Cells ; Cell Line ; Cloning, Molecular ; Conserved Sequence ; DNA-Binding Proteins/genetics/*metabolism ; Enzyme Inhibitors/pharmacology ; Membrane Proteins ; Molecular Sequence Data ; Phosphatidylinositol 3-Kinases ; Phosphorylation ; Phosphotransferases (Alcohol Group Acceptor)/antagonists & ; inhibitors/genetics/*metabolism ; Point Mutation ; Protein Binding ; Receptor, Interferon alpha-beta ; Receptors, Interferon/*metabolism ; Recombinant Fusion Proteins/genetics/metabolism ; STAT3 Transcription Factor ; Signal Transduction ; Trans-Activators/genetics/*metabolism ; Tyrosine/metabolism
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    Interaction of CED-4 with CED-3 and CED-9: a molecular framework for cell death (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-02-21
    Description: Previous genetic studies of the nematode Caenorhabditis elegans identified three important components of the cell death machinery. CED-3 and CED-4 function to kill cells, whereas CED-9 protects cells from death. Here CED-9 and its mammalian homolog Bcl-xL (a member of the Bcl-2 family of cell death regulators) were both found to interact with and inhibit the function of CED-4. In addition, analysis revealed that CED-4 can simultaneously interact with CED-3 and its mammalian counterparts interleukin-1beta-converting enzyme (ICE) and FLICE. Thus, CED-4 plays a central role in the cell death pathway, biochemically linking CED-9 and the Bcl-2 family to CED-3 and the ICE family of pro-apoptotic cysteine proteases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chinnaiyan, A M -- O'Rourke, K -- Lane, B R -- Dixit, V M -- 7863/PHS HHS/ -- New York, N.Y. -- Science. 1997 Feb 21;275(5303):1122-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Michigan Medical School, Department of Pathology, Ann Arbor, MI 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9027312" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Apoptosis Regulatory Proteins ; Caenorhabditis elegans/*cytology/genetics/metabolism ; *Caenorhabditis elegans Proteins ; Calcium-Binding Proteins/genetics/*metabolism ; Caspase 1 ; Caspase 8 ; Caspase 9 ; *Caspases ; Cell Line ; Cysteine Endopeptidases/genetics/*metabolism ; Genes, Helminth ; Helminth Proteins/genetics/*metabolism ; Humans ; Mutation ; Proto-Oncogene Proteins/genetics/*metabolism ; *Proto-Oncogene Proteins c-bcl-2 ; Transfection ; Tumor Cells, Cultured ; bcl-X Protein
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    miRNA-mediated gene silencing by translational repression followed by mRNA deadenylation and decay (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-04-14
    Description: microRNAs (miRNAs) regulate gene expression through translational repression and/or messenger RNA (mRNA) deadenylation and decay. Because translation, deadenylation, and decay are closely linked processes, it is important to establish their ordering and thus to define the molecular mechanism of silencing. We have investigated the kinetics of these events in miRNA-mediated gene silencing by using a Drosophila S2 cell-based controllable expression system and show that mRNAs with both natural and engineered 3' untranslated regions with miRNA target sites are first subject to translational inhibition, followed by effects on deadenylation and decay. We next used a natural translational elongation stall to show that miRNA-mediated silencing inhibits translation at an early step, potentially translation initiation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3971879/" 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/PMC3971879/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Djuranovic, Sergej -- Nahvi, Ali -- Green, Rachel -- R01 GM059425/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Apr 13;336(6078):237-40. doi: 10.1126/science.1215691.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute (HHMI) and Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22499947" target="_blank"〉PubMed〈/a〉
    Keywords: 3' Untranslated Regions ; Animals ; Cell Line ; Drosophila Proteins/genetics ; Drosophila melanogaster/*genetics/metabolism ; *Gene Silencing ; Kinetics ; MicroRNAs/*genetics/metabolism ; Peptide Chain Elongation, Translational ; Peptide Chain Initiation, Translational ; *Protein Biosynthesis ; *RNA Stability ; RNA, Messenger/genetics/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Tuning of natural killer cell reactivity by NKp46 and Helios calibrates T cell responses (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-01-24
    Description: Natural killer (NK) cells are lymphocytes involved in antimicrobial and antitumoral immune responses. Using N-ethyl-N-nitrosourea mutagenesis in mice, we identified a mutant with increased resistance to viral infections because of the presence of hyperresponsive NK cells. Whole-genome sequencing and functional analysis revealed a loss-of-function mutation in the Ncr1 gene encoding the activating receptor NKp46. The down-regulation of NK cell activity by NKp46 was associated with the silencing of the Helios transcription factor in NK cells. NKp46 was critical for the subsequent development of antiviral and antibacterial T cell responses, which suggests that the regulation of NK cell function by NKp46 allows for the optimal development of adaptive immune responses. NKp46 blockade enhanced NK cell reactivity in vivo, which could enable the design of immunostimulation strategies in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Narni-Mancinelli, Emilie -- Jaeger, Baptiste N -- Bernat, Claire -- Fenis, Aurore -- Kung, Sam -- De Gassart, Aude -- Mahmood, Sajid -- Gut, Marta -- Heath, Simon C -- Estelle, Jordi -- Bertosio, Elodie -- Vely, Frederic -- Gastinel, Louis N -- Beutler, Bruce -- Malissen, Bernard -- Malissen, Marie -- Gut, Ivo G -- Vivier, Eric -- Ugolini, Sophie -- New York, N.Y. -- Science. 2012 Jan 20;335(6066):344-8. doi: 10.1126/science.1215621.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, Campus de Luminy case 906, 13288 Marseille, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22267813" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptive Immunity ; Amino Acid Substitution ; Animals ; Antibodies, Blocking/immunology ; Antibodies, Monoclonal/immunology ; Antigens, Ly/genetics/immunology/*physiology ; CD8-Positive T-Lymphocytes/immunology ; Cell Line ; DNA-Binding Proteins/*genetics/physiology ; Down-Regulation ; Genetic Complementation Test ; Herpesviridae Infections/*immunology/virology ; Immunologic Memory ; Killer Cells, Natural/*immunology ; Listeriosis/immunology ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Muromegalovirus/physiology ; Mutagenesis ; Natural Cytotoxicity Triggering Receptor 1/antagonists & ; inhibitors/genetics/immunology/*physiology ; T-Lymphocytes/*immunology ; Transcription Factors/*genetics/physiology ; Transcription, Genetic ; Viral Load
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    ESCRT-III governs the Aurora B-mediated abscission checkpoint through CHMP4C (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-03-17
    Description: The endosomal sorting complex required for transport (ESCRT) machinery plays an evolutionarily conserved role in cytokinetic abscission, the final step of cell division where daughter cells are physically separated. Here, we show that charged multivesicular body (MVB) protein 4C (CHMP4C), a human ESCRT-III subunit, is involved in abscission timing. This function correlated with its differential spatiotemporal distribution during late stages of cytokinesis. Accordingly, CHMP4C functioned in the Aurora B-dependent abscission checkpoint to prevent both premature resolution of intercellular chromosome bridges and accumulation of DNA damage. CHMP4C engaged the chromosomal passenger complex (CPC) via interaction with Borealin, which suggested a model whereby CHMP4C inhibits abscission upon phosphorylation by Aurora B. Thus, the ESCRT machinery may protect against genetic damage by coordinating midbody resolution with the abscission checkpoint.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3998087/" 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/PMC3998087/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carlton, Jeremy G -- Caballe, Anna -- Agromayor, Monica -- Kloc, Magdalena -- Martin-Serrano, Juan -- 092429/Z/10/Z/Wellcome Trust/United Kingdom -- 093056/Wellcome Trust/United Kingdom -- G0802777/Medical Research Council/United Kingdom -- WT093056MA/Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2012 Apr 13;336(6078):220-5. doi: 10.1126/science.1217180. Epub 2012 Mar 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Infectious Diseases, King's College London School of Medicine, London, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22422861" target="_blank"〉PubMed〈/a〉
    Keywords: Aurora Kinase B ; Aurora Kinases ; Cell Cycle Checkpoints ; Cell Cycle Proteins/metabolism ; Cell Line ; Chromosomes, Human/metabolism ; *Cytokinesis ; DNA Damage ; Endosomal Sorting Complexes Required for Transport/*metabolism ; Endosomes/metabolism ; HeLa Cells ; Histocompatibility Antigens Class I/metabolism ; Humans ; Mitosis ; Phosphorylation ; Protein Transport ; Protein-Serine-Threonine Kinases/*metabolism ; Recombinant Fusion Proteins/metabolism
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    Transcription-independent function of Polycomb group protein PSC in cell cycle control (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-04-12
    Description: Polycomb group (PcG) proteins control development and cell proliferation through chromatin-mediated transcriptional repression. We describe a transcription-independent function for PcG protein Posterior sex combs (PSC) in regulating the destruction of cyclin B (CYC-B). A substantial portion of PSC was found outside canonical PcG complexes, instead associated with CYC-B and the anaphase-promoting complex (APC). Cell-based experiments and reconstituted reactions established that PSC and Lemming (LMG, also called APC11) associate and ubiquitylate CYC-B cooperatively, marking it for proteosomal degradation. Thus, PSC appears to mediate both developmental gene silencing and posttranslational control of mitosis. Direct regulation of cell cycle progression might be a crucial part of the PcG system's function in development and cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mohd-Sarip, Adone -- Lagarou, Anna -- Doyen, Cecile M -- van der Knaap, Jan A -- Aslan, Ulku -- Bezstarosti, Karel -- Yassin, Yasmin -- Brock, Hugh W -- Demmers, Jeroen A A -- Verrijzer, C Peter -- New York, N.Y. -- Science. 2012 May 11;336(6082):744-7. doi: 10.1126/science.1215927. Epub 2012 Apr 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Centre for Biomedical Genetics, Erasmus University Medical Centre, Post Office Box 1738, 3000 DR, Rotterdam, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22491092" target="_blank"〉PubMed〈/a〉
    Keywords: Anaphase-Promoting Complex-Cyclosome ; Animals ; Apc11 Subunit, Anaphase-Promoting Complex-Cyclosome ; Carrier Proteins/metabolism ; *Cell Cycle Checkpoints ; Cell Line ; Compound Eye, Arthropod/growth & development/metabolism ; Cyclin B/*metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Drosophila Proteins/chemistry/genetics/*metabolism ; Drosophila melanogaster/cytology/embryology/metabolism ; G2 Phase Cell Cycle Checkpoints ; Gene Silencing ; Imaginal Discs/metabolism ; *Mitosis ; Phenotype ; Polycomb Repressive Complex 1 ; Proteasome Endopeptidase Complex/metabolism ; Protein Binding ; Protein Interaction Domains and Motifs ; RNA Interference ; Transcription, Genetic ; Ubiquitin-Protein Ligase Complexes/metabolism ; Ubiquitination ; Wings, Animal/growth & development
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    Evolutionarily assembled cis-regulatory module at a human ciliopathy locus (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-01-28
    Description: Neighboring genes are often coordinately expressed within cis-regulatory modules, but evidence that nonparalogous genes share functions in mammals is lacking. Here, we report that mutation of either TMEM138 or TMEM216 causes a phenotypically indistinguishable human ciliopathy, Joubert syndrome. Despite a lack of sequence homology, the genes are aligned in a head-to-tail configuration and joined by chromosomal rearrangement at the amphibian-to-reptile evolutionary transition. Expression of the two genes is mediated by a conserved regulatory element in the noncoding intergenic region. Coordinated expression is important for their interdependent cellular role in vesicular transport to primary cilia. Hence, during vertebrate evolution of genes involved in ciliogenesis, nonparalogous genes were arranged to a functional gene cluster with shared regulatory elements.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3671610/" 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/PMC3671610/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Jeong Ho -- Silhavy, Jennifer L -- Lee, Ji Eun -- Al-Gazali, Lihadh -- Thomas, Sophie -- Davis, Erica E -- Bielas, Stephanie L -- Hill, Kiley J -- Iannicelli, Miriam -- Brancati, Francesco -- Gabriel, Stacey B -- Russ, Carsten -- Logan, Clare V -- Sharif, Saghira Malik -- Bennett, Christopher P -- Abe, Masumi -- Hildebrandt, Friedhelm -- Diplas, Bill H -- Attie-Bitach, Tania -- Katsanis, Nicholas -- Rajab, Anna -- Koul, Roshan -- Sztriha, Laszlo -- Waters, Elizabeth R -- Ferro-Novick, Susan -- Woods, C Geoffrey -- Johnson, Colin A -- Valente, Enza Maria -- Zaki, Maha S -- Gleeson, Joseph G -- DK068306/DK/NIDDK NIH HHS/ -- DK072301/DK/NIDDK NIH HHS/ -- DK075972/DK/NIDDK NIH HHS/ -- DK090917/DK/NIDDK NIH HHS/ -- EY021872/EY/NEI NIH HHS/ -- G0700073/Medical Research Council/United Kingdom -- GGP08145/Telethon/Italy -- HD042601/HD/NICHD NIH HHS/ -- NS04843/NS/NINDS NIH HHS/ -- NS052455/NS/NINDS NIH HHS/ -- P30 CA023100/CA/NCI NIH HHS/ -- P30NS047101/NS/NINDS NIH HHS/ -- R01 DK068306/DK/NIDDK NIH HHS/ -- R01 DK072301/DK/NIDDK NIH HHS/ -- R01 DK075972/DK/NIDDK NIH HHS/ -- R01 EY021872/EY/NEI NIH HHS/ -- R01 HD042601/HD/NICHD NIH HHS/ -- R01 NS048453/NS/NINDS NIH HHS/ -- R01 NS052455/NS/NINDS NIH HHS/ -- U54 HG003067/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Feb 24;335(6071):966-9. doi: 10.1126/science.1213506. Epub 2012 Jan 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Neurogenetics Laboratory, Howard Hughes Medical Institute (HHMI), Department of Neurosciences, University of California, San Diego, CA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22282472" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Line ; Cerebellar Diseases/*genetics/metabolism/pathology ; Cilia/metabolism/*ultrastructure ; Conserved Sequence ; DNA, Intergenic ; *Evolution, Molecular ; Eye Abnormalities/*genetics/metabolism/pathology ; Gene Expression Profiling ; *Gene Expression Regulation ; Genetic Heterogeneity ; *Genetic Loci ; Humans ; Kidney Diseases, Cystic/*genetics/metabolism/pathology ; Membrane Proteins/chemistry/*genetics/metabolism ; Molecular Sequence Data ; Multigene Family ; Mutation ; Mutation, Missense ; Phenotype ; Protein Transport ; *Regulatory Sequences, Nucleic Acid ; Retina/abnormalities/metabolism/pathology ; Transport Vesicles/metabolism/ultrastructure
    Print ISSN: 0036-8075
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    The dorsal aorta initiates a molecular cascade that instructs sympatho-adrenal specification (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-06-23
    Description: The autonomic nervous system, which includes the sympathetic neurons and adrenal medulla, originates from the neural crest. Combining avian blood vessel-specific gene manipulation and mouse genetics, we addressed a long-standing question of how neural crest cells (NCCs) generate sympathetic and medullary lineages during embryogenesis. We found that the dorsal aorta acts as a morphogenetic signaling center that coordinates NCC migration and cell lineage segregation. Bone morphogenetic proteins (BMPs) produced by the dorsal aorta are critical for the production of the chemokine stromal cell-derived factor-1 (SDF -1) and Neuregulin 1 in the para-aortic region, which act as chemoattractants for early migration. Later, BMP signaling is directly involved in the sympatho-medullary segregation. This study provides insights into the complex developmental signaling cascade that instructs one of the earliest events of neurovascular interactions guiding embryonic development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Saito, Daisuke -- Takase, Yuta -- Murai, Hidetaka -- Takahashi, Yoshiko -- New York, N.Y. -- Science. 2012 Jun 22;336(6088):1578-81. doi: 10.1126/science.1222369.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22723422" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Cortex/embryology/metabolism ; Adrenal Medulla/*cytology/embryology ; Animals ; Aorta/*embryology/*metabolism ; Avian Proteins/metabolism ; Bone Morphogenetic Proteins/*metabolism ; Cell Line ; Cell Lineage ; Cell Movement ; Chemokine CXCL12/metabolism ; Chemotactic Factors/metabolism ; Chick Embryo ; Coculture Techniques ; Embryonic Development ; Ganglia, Sympathetic/*cytology ; Mice ; Mice, Knockout ; Morphogenesis ; Neural Crest/*cytology/physiology ; Neuregulin-1/metabolism ; Signal Transduction ; Stem Cells/cytology/physiology
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    Adenylate cyclases of Trypanosoma brucei inhibit the innate immune response of the host (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-06-16
    Description: The parasite Trypanosoma brucei possesses a large family of transmembrane receptor-like adenylate cyclases. Activation of these enzymes requires the dimerization of the catalytic domain and typically occurs under stress. Using a dominant-negative strategy, we found that reducing adenylate cyclase activity by about 50% allowed trypanosome growth but reduced the parasite's ability to control the early innate immune defense of the host. Specifically, activation of trypanosome adenylate cyclase resulting from parasite phagocytosis by liver myeloid cells inhibited the synthesis of the trypanosome-controlling cytokine tumor necrosis factor-alpha through activation of protein kinase A in these cells. Thus, adenylate cyclase activity of lyzed trypanosomes favors early host colonization by live parasites. The role of adenylate cyclases at the host-parasite interface could explain the expansion and polymorphism of this gene family.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Salmon, Didier -- Vanwalleghem, Gilles -- Morias, Yannick -- Denoeud, Julie -- Krumbholz, Carsten -- Lhomme, Frederic -- Bachmaier, Sabine -- Kador, Markus -- Gossmann, Jasmin -- Dias, Fernando Braga Stehling -- De Muylder, Geraldine -- Uzureau, Pierrick -- Magez, Stefan -- Moser, Muriel -- De Baetselier, Patrick -- Van Den Abbeele, Jan -- Beschin, Alain -- Boshart, Michael -- Pays, Etienne -- New York, N.Y. -- Science. 2012 Jul 27;337(6093):463-6. doi: 10.1126/science.1222753. Epub 2012 Jun 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Parasitology, Institute for Molecular Biology and Medicine, Universite Libre de Bruxelles, 12, rue des Professeurs Jeener et Brachet, B6041 Gosselies, Belgium. salmon@bioqmed.ufrj.br〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22700656" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/chemistry/genetics/*metabolism ; Animals ; Catalytic Domain ; Cell Line ; Cyclic AMP/metabolism ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Enzyme Activation ; Host-Parasite Interactions ; *Immunity, Innate ; Liver/cytology ; Mice ; Mice, Inbred C57BL ; Mutagenesis, Site-Directed ; Myeloid Cells/immunology ; Parasitemia ; Phagocytosis ; Protozoan Proteins/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Trypanosoma brucei brucei/*enzymology/growth & development/*immunology ; Trypanosomiasis, African/*immunology/metabolism/parasitology ; Tumor Necrosis Factor-alpha/biosynthesis/blood
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    Human alpha-defensin 6 promotes mucosal innate immunity through self-assembled peptide nanonets (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-06-23
    Description: Defensins are antimicrobial peptides that contribute broadly to innate immunity, including protection of mucosal tissues. Human alpha-defensin (HD) 6 is highly expressed by secretory Paneth cells of the small intestine. However, in contrast to the other defensins, it lacks appreciable bactericidal activity. Nevertheless, we report here that HD6 affords protection against invasion by enteric bacterial pathogens in vitro and in vivo. After stochastic binding to bacterial surface proteins, HD6 undergoes ordered self-assembly to form fibrils and nanonets that surround and entangle bacteria. This self-assembly mechanism occurs in vivo, requires histidine-27, and is consistent with x-ray crystallography data. These findings support a key role for HD6 in protecting the small intestine against invasion by diverse enteric pathogens and may explain the conservation of HD6 throughout Hominidae evolution.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4332406/" 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/PMC4332406/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chu, Hiutung -- Pazgier, Marzena -- Jung, Grace -- Nuccio, Sean-Paul -- Castillo, Patricia A -- de Jong, Maarten F -- Winter, Maria G -- Winter, Sebastian E -- Wehkamp, Jan -- Shen, Bo -- Salzman, Nita H -- Underwood, Mark A -- Tsolis, Renee M -- Young, Glenn M -- Lu, Wuyuan -- Lehrer, Robert I -- Baumler, Andreas J -- Bevins, Charles L -- AI032738/AI/NIAID NIH HHS/ -- AI040124/AI/NIAID NIH HHS/ -- AI044170/AI/NIAID NIH HHS/ -- AI050843/AI/NIAID NIH HHS/ -- AI057757/AI/NIAID NIH HHS/ -- AI070726/AI/NIAID NIH HHS/ -- AI072732/AI/NIAID NIH HHS/ -- AI073120/AI/NIAID NIH HHS/ -- AI076246/AI/NIAID NIH HHS/ -- AI082320/AI/NIAID NIH HHS/ -- AI088122/AI/NIAID NIH HHS/ -- HD059127/HD/NICHD NIH HHS/ -- R01 AI032738/AI/NIAID NIH HHS/ -- R01 AI050843/AI/NIAID NIH HHS/ -- R01 AI057757/AI/NIAID NIH HHS/ -- R01 AI076246/AI/NIAID NIH HHS/ -- R01 GM099526/GM/NIGMS NIH HHS/ -- T32AI060555/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2012 Jul 27;337(6093):477-81. doi: 10.1126/science.1218831. Epub 2012 Jun 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, School of Medicine, University of California, Davis, CA 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22722251" target="_blank"〉PubMed〈/a〉
    Keywords: Adhesins, Bacterial/metabolism ; Animals ; Bacterial Proteins/metabolism ; Cell Line ; Humans ; *Immunity, Innate ; *Immunity, Mucosal ; Intestinal Mucosa/immunology/microbiology/ultrastructure ; Intestine, Small/*immunology/microbiology/ultrastructure ; Macromolecular Substances/chemistry/immunology/metabolism ; Mice ; Mice, Transgenic ; Microscopy, Electron, Scanning ; Models, Molecular ; Nanostructures ; Paneth Cells/immunology/metabolism ; Peptides/chemistry/metabolism ; Protein Binding ; Protein Multimerization ; Protein Structure, Quaternary ; Salmonella Infections, Animal/immunology/microbiology ; Salmonella typhimurium/immunology/pathogenicity/ultrastructure ; Yersinia enterocolitica/immunology/pathogenicity ; alpha-Defensins/*chemistry/immunology/*metabolism ; env Gene Products, Human Immunodeficiency Virus/metabolism
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    GBP5 promotes NLRP3 inflammasome assembly and immunity in mammals (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-03-31
    Description: Inflammasomes are sensory complexes that alert the immune system to the presence of infection or tissue damage. These complexes assemble NLR (nucleotide binding and oligomerization, leucine-rich repeat) or ALR (absent in melanoma 2-like receptor) proteins to activate caspase-1 cleavage and interleukin (IL)-1beta/IL-18 secretion. Here, we identified a non-NLR/ALR human protein that stimulates inflammasome assembly: guanylate binding protein 5 (GBP5). GBP5 promoted selective NLRP3 inflammasome responses to pathogenic bacteria and soluble but not crystalline inflammasome priming agents. Generation of Gbp5(-/-) mice revealed pronounced caspase-1 and IL-1beta/IL-18 cleavage defects in vitro and impaired host defense and Nlrp3-dependent inflammatory responses in vivo. Thus, GBP5 serves as a unique rheostat for NLRP3 inflammasome activation and extends our understanding of the inflammasome complex beyond its core machinery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shenoy, Avinash R -- Wellington, David A -- Kumar, Pradeep -- Kassa, Hilina -- Booth, Carmen J -- Cresswell, Peter -- MacMicking, John D -- R01 AI068041-06/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Apr 27;336(6080):481-5. doi: 10.1126/science.1217141. Epub 2012 Mar 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Boyer Center for Molecular Medicine, Yale University School of Medicine, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22461501" target="_blank"〉PubMed〈/a〉
    Keywords: Alum Compounds ; Animals ; Apoptosis Regulatory Proteins ; Carrier Proteins/genetics/*metabolism ; Caspase 1/metabolism ; Cell Line ; Cytoskeletal Proteins/metabolism ; GTP-Binding Proteins/chemistry/genetics/*metabolism ; Humans ; Inflammasomes/*metabolism ; Interferon-gamma/immunology ; Interleukin-1beta/secretion ; Lipopolysaccharides/immunology ; Listeria monocytogenes ; Listeriosis/immunology ; Macrophages/immunology/*metabolism ; Mice ; Protein Multimerization ; RNA Interference ; Salmonella typhimurium/immunology ; Uric Acid
    Print ISSN: 0036-8075
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    Phosphofructokinase 1 glycosylation regulates cell growth and metabolism (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-08-28
    Description: Cancer cells must satisfy the metabolic demands of rapid cell growth within a continually changing microenvironment. We demonstrated that the dynamic posttranslational modification of proteins by O-linked beta-N-acetylglucosamine (O-GlcNAcylation) is a key metabolic regulator of glucose metabolism. O-GlcNAcylation was induced at serine 529 of phosphofructokinase 1 (PFK1) in response to hypoxia. Glycosylation inhibited PFK1 activity and redirected glucose flux through the pentose phosphate pathway, thereby conferring a selective growth advantage on cancer cells. Blocking glycosylation of PFK1 at serine 529 reduced cancer cell proliferation in vitro and impaired tumor formation in vivo. These studies reveal a previously uncharacterized mechanism for the regulation of metabolic pathways in cancer and a possible target for therapeutic intervention.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3534962/" 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/PMC3534962/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yi, Wen -- Clark, Peter M -- Mason, Daniel E -- Keenan, Marie C -- Hill, Collin -- Goddard, William A 3rd -- Peters, Eric C -- Driggers, Edward M -- Hsieh-Wilson, Linda C -- R01 GM084724/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Aug 24;337(6097):975-80. doi: 10.1126/science.1222278.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Chemistry and Chemical Engineering, 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/22923583" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylglucosamine/metabolism ; Acylation ; Adenosine Triphosphate/metabolism ; Animals ; Cell Hypoxia ; Cell Line ; Cell Line, Tumor ; *Cell Proliferation ; Glucose/*metabolism ; Glycolysis ; Glycosylation ; Humans ; Lactic Acid/metabolism ; Mice ; Mice, Nude ; N-Acetylglucosaminyltransferases/genetics/metabolism ; NADP/metabolism ; Neoplasms/*metabolism/*pathology ; Pentose Phosphate Pathway ; Phosphofructokinase-1, Liver Type/antagonists & inhibitors/chemistry/*metabolism
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    AID-driven deletion causes immunoglobulin heavy chain locus suicide recombination in B cells (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-04-28
    Description: Remodeling of immunoglobulin genes by activation-induced deaminase (AID) is required for affinity maturation and class-switch recombination in mature B lymphocytes. In the immunoglobulin heavy chain locus, these processes are predominantly controlled by the 3' cis-regulatory region. We now show that this region is transcribed and undergoes AID-mediated mutation and recombination around phylogenetically conserved switchlike DNA repeats. Such recombination, which we term locus suicide recombination, deletes the whole constant region gene cluster and thus stops expression of the immunoglobulin of the B cell surface, which is critical for B cell survival. The frequency of this event is approaching that of class switching and makes it a potential regulator of B cell homeostasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peron, Sophie -- Laffleur, Brice -- Denis-Lagache, Nicolas -- Cook-Moreau, Jeanne -- Tinguely, Aurelien -- Delpy, Laurent -- Denizot, Yves -- Pinaud, Eric -- Cogne, Michel -- New York, N.Y. -- Science. 2012 May 18;336(6083):931-4. doi: 10.1126/science.1218692. Epub 2012 Apr 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Limoges University, CNRS, 2 rue Marcland, 87025 Limoges Cedex, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22539552" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/immunology/*physiology ; Base Sequence ; Cell Line ; Cell Survival ; Cytidine Deaminase/*metabolism ; *Gene Deletion ; *Gene Rearrangement, B-Lymphocyte, Heavy Chain ; *Genes, Immunoglobulin Heavy Chain ; Homeostasis ; Humans ; Immunoglobulin Class Switching ; Lymphocyte Activation ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; *Recombination, Genetic ; Regulatory Sequences, Nucleic Acid ; Repetitive Sequences, Nucleic Acid ; Transcription, Genetic
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    Cyclic GMP-AMP is an endogenous second messenger in innate immune signaling by cytosolic DNA (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-12-22
    Description: Cytosolic DNA induces type I interferons and other cytokines that are important for antimicrobial defense but can also result in autoimmunity. This DNA signaling pathway requires the adaptor protein STING and the transcription factor IRF3, but the mechanism of DNA sensing is unclear. We found that mammalian cytosolic extracts synthesized cyclic guanosine monophosphate-adenosine monophosphate (cyclic GMP-AMP, or cGAMP) in vitro from adenosine triphosphate and guanosine triphosphate in the presence of DNA but not RNA. DNA transfection or DNA virus infection of mammalian cells also triggered cGAMP production. cGAMP bound to STING, leading to the activation of IRF3 and induction of interferon-beta. Thus, cGAMP functions as an endogenous second messenger in metazoans and triggers interferon production in response to cytosolic DNA.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3855410/" 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/PMC3855410/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, Jiaxi -- Sun, Lijun -- Chen, Xiang -- Du, Fenghe -- Shi, Heping -- Chen, Chuo -- Chen, Zhijian J -- AI-093967/AI/NIAID NIH HHS/ -- GM-079554/GM/NIGMS NIH HHS/ -- R01 AI093967/AI/NIAID NIH HHS/ -- R01 GM079554/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Feb 15;339(6121):826-30. doi: 10.1126/science.1229963. Epub 2012 Dec 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23258412" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Extracts/chemistry ; Cell Line ; Cyclic AMP/*metabolism ; Cyclic GMP/*metabolism ; Cytosol/*immunology ; DNA/*immunology ; HEK293 Cells ; Herpesvirus 1, Human/immunology ; Humans ; *Immunity, Innate ; Interferon Regulatory Factor-3/metabolism ; Interferon-beta/biosynthesis ; Membrane Proteins/genetics/metabolism ; Mice ; Nucleotides, Cyclic/*metabolism ; RNA Interference ; Second Messenger Systems/*immunology ; Transfection
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  • 80
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    Cellular interactions uncouple beta-adrenergic receptors from adenylate cyclase (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-11-17
    Description: C6 glioma cells and B104 neuroblastoma cells both possess adenylate cyclase activity, but only C6 cells have beta-adrenergic receptors. However, when cocultured with B104 cells, C6 cells show a marked decrease in their ability to accumulate adenosine 3', 5'-monophosphate upon stimulation with beta receptor agonists. Since both beta receptors and cholera toxin-stimulated adenylate cyclase activities are present in C6/B104 cocultures, we conclude that the beta receptor/adenylate cyclase transduction mechanism in cocultured C6 cells is uncoupled.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ciment, G -- de Vellis, J -- New York, N.Y. -- Science. 1978 Nov 17;202(4369):765-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/213832" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/*metabolism ; *Cell Communication ; Cell Line ; Cholera Toxin/pharmacology ; Cyclic AMP/metabolism ; Enzyme Activation/drug effects ; Membrane Proteins/metabolism ; Protein Binding ; Receptors, Adrenergic/*metabolism ; Receptors, Adrenergic, beta/*metabolism
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  • 81
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    Rabies viruses increase in virulence when propagated in neuroblastoma cell culture (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-03-10
    Description: Several strains of attenuated rabies virus lacking the capacity to kill adult mice acquired a high lethal potential for mice after one to five serial passages in murine or human neuroblastoma cells. The virulence acquired after passage in neuroblastoma cells is a stable genetic trait retained during subsequent passage of viruses in nonneuroblastoma cell systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, H F -- New York, N.Y. -- Science. 1978 Mar 10;199(4333):1072-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/628831" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cells, Cultured ; Mice ; Neuroblastoma/*microbiology ; Neurons/microbiology ; Rabies Vaccines/toxicity ; Rabies virus/genetics/*pathogenicity ; Vaccines, Attenuated/toxicity ; Virus Replication
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  • 82
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    Estrogen-binding sites in endothelial cell cultures (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-09-01
    Description: The cytosol extracted from a vascular endothelial cell line binds [3H]estradiol with high affinity and a high degree of specificity. In contrast, in experiments performed with cytosol labeled in the intact cell, progesterone and, to a smaller extent, testosterone gave an apparent inhibition of estradiol binding. These data support the concept that ovarian hormones may influence the role of the endothelium in various physiological and pathophysiological conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Colburn, P -- Buonassisi, V -- New York, N.Y. -- Science. 1978 Sep 1;201(4358):817-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/684408" target="_blank"〉PubMed〈/a〉
    Keywords: Aorta/*metabolism ; Cell Line ; Cytosol/metabolism ; Diethylstilbestrol/metabolism ; Endothelium/metabolism ; Estradiol/metabolism ; Progesterone/pharmacology ; Receptors, Estrogen/drug effects/*metabolism ; Testosterone/pharmacology
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  • 83
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    Trisodium phosphonoformate, a new antiviral compound (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-09-01
    Description: Trisodium phosphonoformate selectively inhibits cell-free DNA polymerase activity induced by herpesvirus. The new inhibitor has an antiviral effect on herpes simplex virus types 1 and 2, pseudorables virus, and infectious bovine rhinotracheitis virus in cell culture. It has a good therapeutic activity against cutaneous herpes simplex virus infection in guinea pigs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helgstrand, E -- Eriksson, B -- Johansson, N G -- Lannero, B -- Larsson, A -- Misiorny, A -- Noren, J O -- Sjoberg, B -- Stenberg, K -- Stening, G -- Stridh, S -- Oberg, B -- New York, N.Y. -- Science. 1978 Sep 1;201(4358):819-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/210500" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antiviral Agents/therapeutic use/toxicity ; Cell Line ; DNA-Directed RNA Polymerases/*antagonists & inhibitors ; Formates/pharmacology/toxicity ; Guinea Pigs ; Herpesviridae Infections/drug therapy ; *Nucleic Acid Synthesis Inhibitors ; Organophosphorus Compounds/*pharmacology/toxicity ; Phosphonoacetic Acid/pharmacology ; Simplexvirus/enzymology
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  • 84
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    Biological activity of some oxygenated sterols (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-08-11
    Description: A group of oxygenated sterols has been identified as potent and specific inhibitors of sterol biosynthesis. The ability of these compounds to inhibit sterol synthesis in cultured cells and the ineffectiveness of cholesterol under the same conditions suggest that feedback regulation of sterol biosynthesis may be brought about by an oxygenated sterol rather than by cholesterol. The nature of the regulatory sterol may vary in different cells with their specific requirements for cholesterol as a structural component or as a precursor of other steroid products. The use of oxygenated sterols to block sterol synthesis in cultured cells provides new information regarding the role of sterol in cell membrane structure and function. For example, de novo sterol synthesis is required for DNA synthesis and cell division by some cultured cells. Studies with cultured cells, and with rats and mice in vivo, suggest that oxygenated sterols could be of value in the treatment of several important human diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kandutsch, A A -- Chen, H W -- Heiniger, H J -- New York, N.Y. -- Science. 1978 Aug 11;201(4355):498-501.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663671" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/metabolism ; Cell Division ; Cell Line ; Cholesterol/biosynthesis/*metabolism ; Feedback ; Humans ; Hydroxycholesterols/*metabolism ; Hydroxymethylglutaryl CoA Reductases/metabolism ; Intestines/metabolism ; Ketosteroids/*metabolism ; Liver/metabolism
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  • 85
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    Enhancement of oncogenesis in C3H/10T1/2 mouse embryo cell cultures by saccharin (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-09-22
    Description: Impure and pure samples of saccharin (2 milligrams per milliliter) did not produce oncogenic transformation of C3H/10T1/2, clone 8, mouse embryo fibroblasts. However, after treatment of the cells with a nontransforming initiating dose (0.1 microgram per milliliter) of 3-methylcholanthrene, continuous treatment with either sample of saccharin (100 micrograms per milliliter) led to significant transformation. It is concluded that in this system saccharin is a cocarginogen, probably functioning as a promoting agent that is 1000-fold less active than the tumor promoter 12-O-tetradecanoyl-phorbol-13-acetate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mondal, S -- Brankow, D W -- Heidelberger, C -- New York, N.Y. -- Science. 1978 Sep 22;201(4361):1141-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/684434" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Carcinogens ; Cell Line ; Cell Transformation, Neoplastic/*chemically induced ; Cocarcinogenesis ; Embryo, Mammalian ; Methylcholanthrene ; Mice ; Mice, Inbred C3H ; Saccharin/*pharmacology ; Tetradecanoylphorbol Acetate
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  • 86
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    Growth inhibition of transformed cells with succinylated concanavalin A (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-09-01
    Description: Succinylated concanavalin A reversibly inhibits the growth of SV40 transformed mouse 3T3 cells and thus causes an accumulation of the cells in the G1 phase of the cell cycle. In a soft substrate (methylcellulose) succinylated concanavalin A also restores in transformed cells the growth behavior typical of untransformed cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mannino, R J -- Ballmer, K -- Burger, M M -- New York, N.Y. -- Science. 1978 Sep 1;201(4358):824-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/210502" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Adhesion/drug effects ; Cell Cycle/*drug effects ; Cell Line ; Cell Transformation, Neoplastic/*drug effects ; Concanavalin A/*analogs & derivatives/pharmacology ; Simian virus 40 ; Succinates
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    Generation of new mouse sarcoma viruses in cell culture (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-09-01
    Description: Endogenous nontumor-producing type C viruses from C3H mice were used to generate rapid, solid tumor-inducing variants in cell culture. The new mouse sarcoma viruses induce undifferentiated sarcomas with a short latency period upon inoculation into newborn NIH Swiss mice. Transforming viruses appear only transiently, at a time when the virus-infected cells show morphologic alterations; both before and after this time, transforming viruses cannot be detected. These results show that variants of endogenous type C virus which contain transforming genes (oncogenes) can arise during spread of the endogenous virus in fibroblast lines in vitro as well as in susceptible tissues in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rapp, U R -- Todaro, C -- New York, N.Y. -- Science. 1978 Sep 1;201(4358):821-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/210501" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; *Cell Transformation, Neoplastic ; Cell Transformation, Viral ; *Genes, Viral ; Mice ; Retroviridae/genetics/*pathogenicity ; Sarcoma Viruses, Murine/genetics/pathogenicity ; Sarcoma, Experimental/*microbiology
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  • 88
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    Antibody diversity (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-10-06
    Description: Three important aspects of immunoglobulin gene organization and structure have emerged from studies of cloned immunoglobulin kappa chain genes. (i) Multiple variable genes are encoded separately in the genome of both immunoglobulin-producing and uncommitted (embryonic) cells, thereby establishing the evolutionary base for generating immunoglobulin diversity. (ii) These genes exist as many small, closely related families (subgroups) that share close sequence homology largely within their own subgroup. (iii) Comparison of two cloned variable gene segments derived from a single subgroup reveals a feature of their structure that distinguishes them from fixed genes (that is, globin genes) and provides, through extensive surrounding sequence homology, a large target for intergenic recombination. This last observation suggests that a simple recombination mechanism may account for their genetic instability in both germ line and somatic cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seidman, J G -- Leder, A -- Nau, M -- Norman, B -- Leder, P -- New York, N.Y. -- Science. 1978 Oct 6;202(4363):11-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/99815" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibody Specificity ; Base Sequence ; Binding Sites, Antibody/*genetics ; Biological Evolution ; Cell Line ; Embryo, Mammalian/immunology ; *Genes ; Immunoglobulin Constant Regions/*genetics ; Immunoglobulin Light Chains/*genetics ; Immunoglobulin Variable Region/*genetics ; Immunoglobulin kappa-Chains/*genetics ; Immunoglobulins/*genetics ; Mice ; Neoplasms, Experimental/immunology ; Plasmacytoma/immunology ; Recombination, Genetic
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  • 89
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    High efficiency DNA-mediated transformation of primate cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-08-05
    Description: Tissue culture cells from several mammalian species, including three primate lines, were transfected with recombinant vectors carrying Escherichia coli xanthine-guanine phosphoribosyltransferase or Tn5 aminoglycoside phosphotransferase dominant selectable markers. Human HeLa and SV40-transformed xeroderma pigmentosum cells exhibited stable transformation frequencies of at least 10(-3) (0.1 percent). CV-1, an African green monkey kidney cell line, could be stably transformed with the exceptionally high frequency of 6 X 10(-2) (6 percent).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gorman, C -- Padmanabhan, R -- Howard, B H -- New York, N.Y. -- Science. 1983 Aug 5;221(4610):551-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6306768" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avian Sarcoma Viruses/genetics ; Cell Line ; Cercopithecus aethiops ; Cricetinae ; Cricetulus ; DNA, Recombinant/*metabolism ; Genetic Vectors ; HeLa Cells/metabolism ; Humans ; Mice ; Plasmids ; *Transfection
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  • 90
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    Synthesis of kappa light chains by cell lines containing an 8;22 chromosomal translocation derived from a male homosexual with Burkitt's lymphoma (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-12-09
    Description: Three cell lines were derived from a homosexual patient with probable acquired immunodeficiency syndrome and Burkitt's lymphoma. The cell lines produce an unusual strain of Epstein-Barr virus which will both transform cord blood lymphocytes and induce early antigens in Raji cells. Translocations between chromosomes 8 and 22 have occurred in all three lines, but the cells synthesize immunoglobulin M with light chains of the kappa type, in contrast to the usual concordance between a translocation involving chromosome 22 and lambda chain synthesis. Both kappa genes and one lambda gene are rearranged. These findings indicate either that translocation may occur as a separate event from immunoglobulin gene rearrangement or that the proposed hierarchical sequence of immunoglobulin gene rearrangements is not always adhered to. The data also imply that in cells containing a translocation between the long arm of chromosome 8 and a chromosome bearing an immunoglobulin gene, alteration of cellular myc expression may occur regardless of the immunoglobulin gene that is expressed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Magrath, I -- Erikson, J -- Whang-Peng, J -- Sieverts, H -- Armstrong, G -- Benjamin, D -- Triche, T -- Alabaster, O -- Croce, C M -- New York, N.Y. -- Science. 1983 Dec 9;222(4628):1094-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6316501" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/complications ; Antigens, Viral/analysis ; Burkitt Lymphoma/complications/*genetics ; Cell Line ; Chromosomes, Human, 21-22 and Y ; Chromosomes, Human, 6-12 and X ; Epstein-Barr Virus Nuclear Antigens ; Herpesvirus 4, Human/analysis ; Homosexuality ; Humans ; Immunoglobulin Light Chains/*biosynthesis ; Immunoglobulin kappa-Chains/*biosynthesis ; Male ; Oncogenes
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  • 91
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    DNA methylation decreases in aging but not in immortal cells (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-06-03
    Description: When normal diploid fibroblasts from mice, hamsters, and humans were grown in culture, the 5-methylcytosine content of their DNA's markedly decreased. The greatest rate of loss of 5-methylcytosine residues was observed in mouse cells, which survived the least number of division. Immortal mouse cell lines had more stable rates of methylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, V L -- Jones, P A -- 1-T32-CA09320/CA/NCI NIH HHS/ -- R01-GM30892/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 3;220(4601):1055-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6844925" target="_blank"〉PubMed〈/a〉
    Keywords: 5-Methylcytosine ; *Aging ; Animals ; Cell Division ; Cell Line ; Cricetinae ; Cytosine/analogs & derivatives/metabolism ; DNA/metabolism/*physiology ; Fibroblasts/metabolism ; Humans ; Mesocricetus ; Methylation ; Mice ; Time Factors
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  • 92
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    Bacterial contamination of human tumor samples (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1984 Aug 17;225(4663):670-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6087452" target="_blank"〉PubMed〈/a〉
    Keywords: Carcinoma, Hepatocellular/genetics ; Cell Line ; DNA, Bacterial ; *DNA, Neoplasm ; DNA, Viral ; Hepatitis B virus/genetics ; Humans ; Liver Neoplasms/genetics ; Oncogenes
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  • 93
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    Biotechnology as an intellectual property (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-04-27
    Description: Recent advances in biotechnology have created many public policy and legal issues, one of the most significant of which is the treatment of biotechnological industrial products, particularly under the patent system. Patents represent one of several types of intellectual property; their ownership confers the right to exclude others from benefitting from the tangible products of a proprietary subject matter. Intellectual property law and its protections will play a major role in the rate at which biotechnology develops in the United States. In this article biotechnological intellectual property issues are reviewed in the context of their underlying legal requirements. The implications of other factors, such as international competition, research funding, and gene ownership, are also considered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adler, R G -- New York, N.Y. -- Science. 1984 Apr 27;224(4647):357-63.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6584975" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomedical Research ; Cell Line ; Copyright ; DNA, Recombinant ; Economic Competition ; Federal Government ; *Genetic Engineering ; *Genetics, Microbial ; Government Regulation ; Legislation as Topic ; Ownership ; *Patents as Topic ; Research ; *Technology ; United States ; as a question of intellectual property rights. Attention is focused on the major ; role played by the U.S. patent system in establishing such rights, as illustrated ; by the case of products of recombinant DNA research. Trade secret, copyright, and ; trademark protections are also considered, as are policy issues such as ; international competition in the development of biomedical technologies and ; financing arrangements.
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  • 94
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    Stress hormones: their interaction and regulation (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-05-04
    Description: Stress stimulates several adaptive hormonal responses. Prominent among these responses are the secretion of catecholamines from the adrenal medulla, corticosteroids from the adrenal cortex, and adrenocorticotropin from the anterior pituitary. A number of complex interactions are involved in the regulation of these hormones. Glucocorticoids regulate catecholamine biosynthesis in the adrenal medulla and catecholamines stimulate adrenocorticotropin release from the anterior pituitary. In addition, other hormones, including corticotropin-releasing factor, vasoactive intestinal peptide, and arginine vasopressin stimulate while the corticosteroids and somatostatin inhibit adrenocorticotropin secretion. Together these agents appear to determine the complex physiologic responses to a variety of stressors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Axelrod, J -- Reisine, T D -- New York, N.Y. -- Science. 1984 May 4;224(4648):452-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6143403" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/metabolism ; Adrenal Cortex/metabolism ; Adrenal Medulla/metabolism ; Adrenocorticotropic Hormone/*metabolism ; Animals ; Brain/metabolism ; Catecholamines/*metabolism ; Cell Line ; Corticotropin-Releasing Hormone/metabolism ; Cyclic AMP/metabolism ; Glucocorticoids/*metabolism ; Humans ; Phospholipases A/metabolism ; Pituitary Gland, Anterior/metabolism ; Receptors, Adrenergic, alpha/metabolism ; Receptors, Adrenergic, beta/metabolism ; Receptors, Cell Surface/metabolism ; Receptors, Corticotropin-Releasing Hormone ; Receptors, Somatostatin ; Somatostatin/pharmacology ; Stress, Physiological/*metabolism ; Stress, Psychological/metabolism ; Sympathetic Nervous System/metabolism ; Vasoactive Intestinal Peptide/pharmacology ; Vasopressins/pharmacology
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  • 95
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    Regulation of a hybrid gene by glucose and temperature in hamster fibroblasts (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-12
    Description: A novel eukaryotic hybrid gene has been constructed from the 5' sequence of a rat gene and the bacterial neomycin-resistance gene. After transfection into hamster fibroblasts, the neo transcripts can be induced to high levels by the absence of glucose. Furthermore, this hybrid gene can be regulated by temperature when it is introduced into a temperature-sensitive mutant cell line.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Attenello, J W -- Lee, A S -- CA-27607/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Oct 12;226(4671):187-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6484570" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cricetinae ; DNA, Recombinant ; Drug Resistance, Microbial ; Fibroblasts ; *Gene Expression Regulation ; Genes, Bacterial ; *Genes, Regulator ; Glucose/*pharmacology ; *HSP70 Heat-Shock Proteins ; Membrane Proteins/biosynthesis/*genetics ; Mutation ; Neomycin/pharmacology ; Rats ; Temperature ; Transcription, Genetic ; Transfection
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  • 96
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    T-cell growth factor gene: lack of expression in human T-cell leukemia-lymphoma virus-infected cells (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-03-09
    Description: Activated mature T cells require T-cell growth factor (TCGF) for continuous proliferation. However, many mature T cells infected with human T-cell leukemia-lymphoma virus grow independently of exogenously added TCGF. It is now reported that cells infected with this virus also lack detectable TCGF messenger RNA (less than one copy per cell) and thus do not produce their own growth factor. The results apparently rule out an autostimulation mechanism of growth control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arya, S K -- Wong-Staal, F -- Gallo, R C -- New York, N.Y. -- Science. 1984 Mar 9;223(4640):1086-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6320374" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Deltaretrovirus/*physiology ; *Gene Expression Regulation/drug effects ; Humans ; Interferon-gamma/genetics ; Interleukin-2/*genetics ; Phytohemagglutinins/pharmacology ; RNA, Messenger/*genetics ; T-Lymphocytes/metabolism/*microbiology ; Tetradecanoylphorbol Acetate/pharmacology
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  • 97
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    Identification of DNA sequence responsible for 5-bromodeoxyuridine-induced gene amplification (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-31
    Description: Bromodeoxyuridine (BrdUrd) treatment of the prolactin nonproducing subclone of GH cells (rat pituitary tumor cells) induces amplification of a 20-kilobase DNA fragment including all of the prolactin gene coding sequences. This amplified DNA segment, which is flanked by two unamplified regions, thus designates a unit of BrdUrd-induced amplified sequence. Cloned DNA segments, 10.3 kilobases long, from the 5' end of the rat prolactin gene of BrdUrd-responsive and -nonresponsive cells, were ligated to the thymidine kinase gene of herpes simplex virus type 1 (HSV1TK), and the hybrid DNA was transferred to thymidine kinase-deficient mouse fibroblast cells by transfection. The HSV1TK gene and the rat prolactin gene were amplified together in drug-treated transfectants carrying the hybrid DNA HSV1TK gene and rat prolactin gene of BrdUrd-responsive GH cells. These results suggest that the 10.3-kilobase DNA segment at the 5' end of the rat prolactin gene of BrdUrd-responsive GH cells carries the information for drug-induced gene amplification (amplicon) and that another gene, such as the HSV1TK gene, is also amplified when the latter is placed adjacent to this segment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Biswas, D K -- Hartigan, J A -- Pichler, M H -- CA28218/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):941-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6089335" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Bromodeoxyuridine/*pharmacology ; Cell Line ; Cloning, Molecular ; DNA/*genetics ; DNA, Recombinant ; *Gene Amplification ; Genes, Viral ; Mice ; Prolactin/genetics ; Rats ; Simplexvirus/genetics ; Thymidine Kinase/genetics ; Transfection
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  • 98
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    Insulin receptor: evidence that it is a protein kinase (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    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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  • 99
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    Herpes simplex virus glycoprotein D: human monoclonal antibody produced by bone marrow cell line (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-08
    Description: Normal bone marrow cells from a donor positive for herpes simplex virus were transformed with Epstein-Barr virus. The resulting lymphoblastoid cell line has secreted immunoglobulin G1 of the kappa type continuously for 2 years. This immunoglobulin, detected both on the cell surface and in the cytoplasm, reacts with cells infected with herpes simplex virus. It defines an antigen that comigrates with the 55-kilodalton glycoprotein D of herpes simplex virus type 1 and neutralizes the infectivity of herpes simplex viruses 1 and 2.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seigneurin, J M -- Desgranges, C -- Seigneurin, D -- Paire, J -- Renversez, J C -- Jacquemont, B -- Micouin, C -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):173-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6304881" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Antibodies, Monoclonal/*immunology ; B-Lymphocytes/immunology ; Bone Marrow/*immunology ; Bone Marrow Cells ; Cell Line ; Enzyme-Linked Immunosorbent Assay ; Humans ; Immunoglobulin G/immunology ; Simplexvirus/*immunology ; Viral Envelope Proteins ; Viral Proteins/*immunology
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  • 100
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    Altered transcription of the c-abl oncogene in K-562 and other chronic myelogenous leukemia cells (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-07-06
    Description: Expression of the cellular abl (c- abl ) oncogene was studied in K-562 and other chronic myelogenous leukemia (CML) cells and cell lines by means of Northern blot hybridization. In contrast to non-CML cells, which contained 7.4- and 6.8-kilobase abl -related transcripts, the CML cells contained a predominant and novel 8.2-kilobase abl -related RNA. In addition, the levels of abl -related message were up to eight times higher in CML cell lines from patients at the blast crisis stage of the disease compared with CML cells obtained during the chronic phase and with non-CML cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Collins, S J -- Kubonishi, I -- Miyoshi, I -- Groudine, M T -- New York, N.Y. -- Science. 1984 Jul 6;225(4657):72-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6587568" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Chromosomes, Human, 21-22 and Y ; Chromosomes, Human, 6-12 and X ; DNA, Neoplasm/genetics ; Humans ; Leukemia, Myeloid/*genetics ; Mice ; Nucleic Acid Hybridization ; *Oncogenes ; RNA, Messenger/genetics ; *Transcription, Genetic
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