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  • Signal Transduction
  • American Association for the Advancement of Science (AAAS)  (20)
  • American Association of Petroleum Geologists (AAPG)
  • 1990-1994  (20)
Collection
Publisher
  • American Association for the Advancement of Science (AAAS)  (20)
  • American Association of Petroleum Geologists (AAPG)
Years
Year
  • 1
    Publication Date: 1993-02-05
    Description: beta-Adrenergic receptor kinase (beta ARK) and beta-arrestin function in the homologous or agonist-activated desensitization of G protein-coupled receptors. The isoforms beta ARK-2 and beta-arrestin-2 are highly enriched in and localized to the dendritic knobs and cilia of the olfactory receptor neurons where the initial events of olfactory signal transduction occur. Odorants induce a rapid and transient elevation of adenosine 3',5'-monophosphate (cAMP), which activates a nonspecific cation channel and produces membrane depolarization. Preincubation of rat olfactory cilia with antibodies raised against beta ARK-2 and beta-arrestin-2 increased the odorant-induced elevation of cAMP and attenuated desensitization. These results suggest that beta ARK-2 and beta-arrestin-2 mediate agonist-dependent desensitization in olfaction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dawson, T M -- Arriza, J L -- Jaworsky, D E -- Borisy, F F -- Attramadal, H -- Lefkowitz, R J -- Ronnett, G V -- NS 01578-01/NS/NINDS NIH HHS/ -- NS-02131/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1993 Feb 5;259(5096):825-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Johns Hopkins Medical Institutions, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8381559" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/*metabolism ; *Arrestins ; Cells, Cultured ; Cyclic AMP/metabolism ; *Cyclic AMP-Dependent Protein Kinases ; Cytosol/metabolism ; Dendrites/physiology ; Eye Proteins/*metabolism ; G-Protein-Coupled Receptor Kinase 2 ; GTP-Binding Proteins/*metabolism ; Isoenzymes/metabolism ; Male ; Mechanoreceptors/*physiology ; Neurons/*physiology ; *Odors ; Olfactory Bulb/*physiology ; Protein Kinases/*metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, Adrenergic, beta/*physiology ; Signal Transduction ; *Smell ; Testis/physiology ; Turbinates/*physiology ; beta-Adrenergic Receptor Kinases
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 1990-07-13
    Description: The heterotrimeric guanine nucleotide-binding regulatory proteins act at the inner surface of the plasma membrane to relay information from cell surface receptors to effectors inside the cell. These G proteins are not integral membrane proteins, yet are membrane associated. The processing and function of the gamma subunit of the yeast G protein involved in mating-pheromone signal transduction was found to be affected by the same mutations that block ras processing. The nature of these mutations implied that the gamma subunit was polyisoprenylated and that this modification was necessary for membrane association and biological activity. A microbial screen was developed for pharmacological agents that inhibit polyisoprenylation and that have potential application in cancer therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finegold, A A -- Schafer, W R -- Rine, J -- Whiteway, M -- Tamanoi, F -- CA 41996/CA/NCI NIH HHS/ -- GM 07183/GM/NIGMS NIH HHS/ -- GM 35827/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Jul 13;249(4965):165-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, University of Chicago, IL 60637.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1695391" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Membrane/metabolism ; Cloning, Molecular ; Epitopes/genetics ; GTP-Binding Proteins/genetics/*metabolism ; Hemagglutinins, Viral/immunology ; Lovastatin/pharmacology ; Mevalonic Acid/pharmacology ; Molecular Sequence Data ; Mutation ; Oncogene Protein p21(ras)/genetics/*metabolism ; Orthomyxoviridae/immunology ; Protein Processing, Post-Translational ; Saccharomyces cerevisiae/*genetics/metabolism ; Signal Transduction ; Suppression, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1990-07-13
    Description: Murine minor lymphocyte-stimulating (Mls) determinants are cell surface antigens that stimulate strong primary T cell responses; the responding T cells display restricted T cell receptor (TCR) V beta gene usage. Interaction of T cells with mitogens or major histocompatibility complex (MHC) antigens activated the polyphosphoinositide (PI) signaling pathway, but this pathway was not triggered by Mls recognition. However, interleukin-2 (IL-2) secretion and proliferation to all three stimuli were comparable. Thus, although recognition of both allo-H-2 and Mls determinants is thought to be mediated by the TCR, these antigens appear to elicit biochemically distinct signal transduction pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Rourke, A M -- Mescher, M F -- Webb, S R -- New York, N.Y. -- Science. 1990 Jul 13;249(4965):171-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Membrane Biology, Medical Biology Institute, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2164711" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Surface/*immunology ; H-2 Antigens/*immunology ; Hybridomas ; Hydrolysis ; Lymphocyte Activation ; Mice ; Mice, Inbred AKR ; Mice, Inbred CBA ; Minor Lymphocyte Stimulatory Antigens ; Phosphatidylinositols/*metabolism ; Receptors, Antigen, T-Cell/genetics/immunology ; Signal Transduction ; T-Lymphocytes/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1991-12-13
    Description: In mammals, retinol is the precursor for retinoids, which affect various aspects of morphogenesis and development. However, B lymphocytes, although retinol-dependent, do not use retinoic acid as mediator. Retinol is metabolized by B lymphocytes and other cell lines to optically active 14-hydroxy-4,14-retro-retinol; it is this compound that mediates the growth control. Thus another second messenger molecule, in addition to retinoic acid and retinal, is derived from retinol.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buck, J -- Derguini, F -- Levi, E -- Nakanishi, K -- Hammerling, U -- AI38351/AI/NIAID NIH HHS/ -- CA49933/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Dec 13;254(5038):1654-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Memorial Sloan-Kettering Cancer Center, New York, New York 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1749937" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/physiology ; Cell Line ; Growth Substances ; Humans ; Magnetic Resonance Spectroscopy ; Mice ; Retinoids/*chemistry ; Second Messenger Systems ; Signal Transduction ; Spectrophotometry, Ultraviolet ; Vitamin A/*analogs & derivatives/chemistry/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 1992-05-08
    Description: Controversy exists as to whether the interaction of a guanosine triphosphatase activating protein (GAP) with Ras proteins functions both to initiate and to terminate Ras-dependent signaling events or only to terminate them. GAP-C, a carboxyl-terminal fragment of GAP that is sufficient to stimulate GTPase activity, inhibited the stimulation of transcription produced by some oncoproteins (v-Src, polyoma middle T, wild-type Ras, and oncogenic Ras) but not that produced by v-Mos. Wild-type GAP did not affect transcription induced by oncogenic Ras but reversed the inhibitory effect of GAP-C on transcription induced by oncogenic Ras. These results indicate that GAP is a negative regulator of wild-type Ras and elicits a downstream signal by interacting with Ras-GTP (guanosine triphosphate).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schweighoffer, F -- Barlat, I -- Chevallier-Multon, M C -- Tocque, B -- New York, N.Y. -- Science. 1992 May 8;256(5058):825-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rhone-Poulenc Rorer, Centre de Recherche de Vitry-Alfortville, Vitry Sur Seine.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1317056" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Antigens, Polyomavirus Transforming/genetics ; CHO Cells ; *Cell Cycle Proteins ; *Cell Transformation, Neoplastic ; Chloramphenicol O-Acetyltransferase/genetics/metabolism ; Cricetinae ; *Enhancer Elements, Genetic ; Fungal Proteins/genetics/metabolism ; GTPase-Activating Proteins ; *Genes, ras ; Humans ; Mice ; Oncogene Proteins v-mos ; Oncogenes ; Polyomavirus/*genetics ; Promoter Regions, Genetic ; Protein-Tyrosine Kinases/genetics ; Proteins/*metabolism ; Retroviridae Proteins, Oncogenic/genetics ; Signal Transduction ; Simian virus 40/genetics ; Transcription, Genetic ; *Transcriptional Activation ; Transfection ; ras GTPase-Activating Proteins ; *ras-GRF1
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 1990-03-02
    Description: Several immunologically distinct isozymes of inositol phospholipid-specific phospholipase C (PLC) have been purified from bovine brain. Murine NIH 3T3 fibroblasts were found to express PLC-gamma, but the expression of PLC-beta was barely detectable by radioimmunoassay or protein immunoblot. A mixture of monoclonal antibodies was identified that neutralizes the biological activity of both endogenous and injected purified PLC-gamma. When co-injected with oncogenic Ras protein or PLC-gamma, this mixture of antibodies inhibited the induction of DNA synthesis that characteristically results from the injection of these proteins into quiescent 3T3 cells. However, when oncogenic Ras protein or PLC-gamma was co-injected with a neutralizing monoclonal antibody to Ras, only the DNA synthesis induced by the Ras protein was inhibited--that induced by PLC was unaffected. These results suggest that the Ras protein is an upstream effector of PLC activity in phosphoinositide-specific signal transduction and that PLC-gamma activity is necessary for Ras-mediated induction of DNA synthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, M R -- Liu, Y L -- Kim, H -- Rhee, S G -- Kung, H F -- N01-CO-74102/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1990 Mar 2;247(4946):1074-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biological Carcinogenesis and Development Program, National Cancer Institute-Frederick Cancer Research Facility, MD 21701.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2408147" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/immunology ; Cell Line ; DNA/*biosynthesis ; Fibroblasts ; Growth Substances/pharmacology ; Hybridomas ; Immunoblotting ; Interphase ; Isoenzymes/immunology/*metabolism ; Microinjections ; Oncogene Protein p21(ras)/immunology/*pharmacology ; Radioimmunoassay ; Signal Transduction ; Type C Phospholipases/immunology/*metabolism/pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1990-09-07
    Description: The proto-oncogenes c-fos and c-jun function cooperatively as inducible transcription factors in signal transduction processes. Their protein products, Fos and Jun, form a heterodimeric complex that interacts with the DNA regulatory element known as the activator protein-1 (AP-1) binding site. Dimerization occurs via interaction between leucine zipper domains and serves to bring into proper juxtaposition a region in each protein that is rich in basic amino acids and that forms a DNA-binding domain. DNA binding of the Fos-Jun heterodimer was modulated by reduction-oxidation (redox) of a single conserved cysteine residue in the DNA-binding domains of the two proteins. Furthermore, a nuclear protein was identified that reduced Fos and Jun and stimulated DNA-binding activity in vitro. These results suggest that transcriptional activity mediated by AP-1 binding factors may be regulated by a redox mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abate, C -- Patel, L -- Rauscher, F J 3rd -- Curran, T -- New York, N.Y. -- Science. 1990 Sep 7;249(4973):1157-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Oncology and Virology, Roche Institute of Molecular Biology, Nutley, NJ 07110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2118682" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell-Free System ; Cysteine/physiology ; DNA Mutational Analysis ; DNA-Binding Proteins/drug effects/*physiology ; Diamide/pharmacology ; Humans ; In Vitro Techniques ; Molecular Sequence Data ; Oxidation-Reduction ; Proto-Oncogene Proteins/*physiology ; Proto-Oncogene Proteins c-fos ; Proto-Oncogene Proteins c-jun ; Rats ; Recombinant Proteins ; Signal Transduction ; Structure-Activity Relationship ; Sulfhydryl Reagents/pharmacology ; Transcription Factors/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 1991-12-13
    Description: The current view of how steroid hormone receptors affect gene transcription is that these receptors, on binding ligand, change to a state in which they can interact with chromatin and regulate transcription of target genes. Receptor activation is believed to be dependent only on this ligand-binding event. Selected steroid hormone receptors can be activated in a ligand-independent manner by a membrane receptor agonist, the neurotransmitter dopamine. In vitro, dopamine faithfully mimicked the effect of progesterone by causing a translocation of chicken progesterone receptor (cPR) from cytoplasm to nucleus. Dual activation by progesterone and dopamine was dissociable, and a serine residue in the cPR was identified that is not necessary for progesterone-dependent activation of cPR, but is essential for dopamine activation of this receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Power, R F -- Mani, S K -- Codina, J -- Conneely, O M -- O'Malley, B W -- New York, N.Y. -- Science. 1991 Dec 13;254(5038):1636-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Baylor College of Medicine, Houston, TX 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1749936" target="_blank"〉PubMed〈/a〉
    Keywords: 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine/pharmacology ; Adenylyl Cyclases/physiology ; Animals ; Cell Line ; Cercopithecus aethiops ; Dopamine/*pharmacology ; Epinephrine/pharmacology ; Ergolines/pharmacology ; Ethers, Cyclic/pharmacology ; Gene Expression Regulation/drug effects ; In Vitro Techniques ; Isoproterenol/pharmacology ; Ligands ; Norepinephrine/pharmacology ; Okadaic Acid ; Promoter Regions, Genetic ; Quinpirole ; Receptors, Dopamine/*physiology ; Receptors, Steroid/*physiology ; Regulatory Sequences, Nucleic Acid ; Signal Transduction ; Transcription Factors/physiology ; Transcription, Genetic/drug effects
    Print ISSN: 0036-8075
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1993-07-16
    Description: Fertilization is accompanied by a transient increase in the concentration of intracellular Ca2+, which serves as a signal for initiating development. Some of the Ca2+ appears to be released from intracellular stores by the binding of inositol trisphosphate (IP3) to its receptor. However, in sea urchin eggs, other mechanisms appear to participate. Cyclic adenosine diphosphate--ribose (cADPR), a naturally occurring metabolite of nicotinamide adenine dinucleotide, is as potent as IP3 in mobilizing Ca2+ in sea urchin eggs. Experiments with antagonists of the cADPR and IP3 receptors revealed that both Ca2+ mobilizing systems were activated during fertilization. Blockage of either of the systems alone was not sufficient to prevent the sperm-induced Ca2+ transient. This study provides direct evidence for a physiological role of cADPR in the Ca2+ signaling process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, H C -- Aarhus, R -- Walseth, T F -- HD17484/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1993 Jul 16;261(5119):352-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of Minnesota, Minneapolis 55455.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8392749" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Diphosphate Ribose/analogs & derivatives/pharmacology ; Animals ; Calcium/*metabolism ; *Calcium Channels ; Cyclic ADP-Ribose ; Cyclic AMP/analogs & derivatives/pharmacology ; Female ; *Fertilization ; Heparin/pharmacology ; Inositol 1,4,5-Trisphosphate/pharmacology ; Inositol 1,4,5-Trisphosphate Receptors ; Ovum/*metabolism ; Receptors, Cell Surface/*physiology ; *Receptors, Cytoplasmic and Nuclear ; Sea Urchins ; Signal Transduction
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  • 10
    Publication Date: 1994-01-07
    Description: Coexpression of the human Met receptor and its ligand, hepatocyte growth factor/scatter factor (HGF/SF), in NIH 3T3 fibroblasts causes the cells to become tumorigenic in nude mice. The resultant tumors display lumen-like morphology, contain carcinoma-like focal areas with intercellular junctions resembling desmosomes, and coexpress epithelial (cytokeratin) and mesenchymal (vimentin) cytoskeletal markers. The tumor cells also display enhanced expression of desmosomal and tight-junction proteins. The apparent mesenchymal to epithelial conversion of the tumor cells mimics the conversion that occurs during embryonic kidney development, suggesting that Met-HGF/SF signaling plays a role in this process as well as in tumors that express both epithelial and mesenchymal markers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsarfaty, I -- Rong, S -- Resau, J H -- Rulong, S -- da Silva, P P -- Vande Woude, G F -- N01-CO-74101/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1994 Jan 7;263(5143):98-101.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉ABL-Basic Research Program, National Cancer Institute (NCI)-Frederick Cancer Research and Development Center, MD 21702-1201.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7505952" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; *Cell Transformation, Neoplastic ; Desmosomes/ultrastructure ; Epithelial Cells ; Hepatocyte Growth Factor/metabolism/pharmacology ; Keratins/biosynthesis ; Kidney/embryology/metabolism ; Mesoderm/cytology ; Mice ; Mice, Nude ; Neoplasms, Experimental/metabolism/*pathology ; Proto-Oncogene Proteins/genetics/*metabolism ; Proto-Oncogene Proteins c-met ; *Proto-Oncogenes ; Receptor Protein-Tyrosine Kinases/genetics/*metabolism ; Signal Transduction ; Transfection ; Vimentin/biosynthesis
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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