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  • Transfection  (63)
  • American Association for the Advancement of Science (AAAS)  (63)
  • American Meteorological Society
  • 1995-1999  (63)
  • 1996  (63)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (63)
  • American Meteorological Society
  • Springer  (1)
Years
  • 1995-1999  (63)
Year
  • 1
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    RAC regulation of actin polymerization and proliferation by a pathway distinct from Jun kinase (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-22
    Description: The RAC guanine nucleotide binding proteins regulate multiple biological activities, including actin polymerization, activation of the Jun kinase (JNK) cascade, and cell proliferation. RAC effector loop mutants were identified that separate the ability of RAC to interact with different downstream effectors. One mutant of activated human RAC protein, RACV12H40 (with valine and histidine substituted at position 12 and 40, respectively), was defective in binding to PAK3, a Ste20-related p21-activated kinase (PAK), but bound to POR1, a RAC-binding protein. This mutant failed to stimulate PAK and JNK activity but still induced membrane ruffling and mediated transformation. A second mutant, RACV12L37 (with leucine substituted at position 37), which bound PAK but not POR1, induced JNK activation but was defective in inducing membrane ruffling and transformation. These results indicate that the effects of RAC on the JNK cascade and on actin polymerization and cell proliferation are mediated by distinct effector pathways that diverge at the level of RAC itself.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joneson, T -- McDonough, M -- Bar-Sagi, D -- Van Aelst, L -- CA55360/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Nov 22;274(5291):1374-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Microbiology, State University of New York, Stony Brook, NY 11794, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8910277" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Actins/*metabolism ; *Adaptor Proteins, Signal Transducing ; Animals ; COS Cells ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Carrier Proteins/metabolism ; *Cell Division ; Cell Line ; Cell Line, Transformed ; Cell Membrane/ultrastructure ; Enzyme Activation ; GTP-Binding Proteins/genetics/metabolism/*physiology ; Humans ; JNK Mitogen-Activated Protein Kinases ; Mice ; *Mitogen-Activated Protein Kinases ; Mutagenesis ; Protein-Serine-Threonine Kinases/metabolism ; Rats ; Transfection ; p21-Activated Kinases ; rac GTP-Binding 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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  • 2
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    Inhibition of myogenic bHLH and MEF2 transcription factors by the bHLH protein Twist (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-06-07
    Description: The myogenic basic helix-loop-helix (bHLH) and MEF2 transcription factors are expressed in the myotome of developing somites and cooperatively activate skeletal muscle gene expression. The bHLH protein Twist is expressed throughout the epithelial somite and is subsequently excluded from the myotome. Ectopically expressed mouse Twist (Mtwist) was shown to inhibit myogenesis by blocking DNA binding by MyoD, by titrating E proteins, and by inhibiting trans-activation by MEF2. For inhibition of MEF2, Mtwist required heterodimerization with E proteins and an intact basic domain and carboxyl-terminus. Thus, Mtwist inhibits both families of myogenic regulators and may regulate myotome formation temporally or spatially.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spicer, D B -- Rhee, J -- Cheung, W L -- Lassar, A B -- 5-F32-AR08214-02/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Jun 7;272(5267):1476-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8633239" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basic Helix-Loop-Helix Transcription Factors ; Cell Differentiation ; Cell Line ; Creatine Kinase/genetics ; DNA/metabolism ; DNA-Binding Proteins/*antagonists & inhibitors/chemistry/genetics/metabolism ; Drosophila ; Drosophila Proteins ; Helix-Loop-Helix Motifs/*physiology ; Inhibitor of Differentiation Protein 1 ; MEF2 Transcription Factors ; Mice ; Muscle, Skeletal/*cytology/metabolism ; MyoD Protein/metabolism/physiology ; Myogenic Regulatory Factors ; Nuclear Proteins/chemistry/metabolism/*physiology ; *Repressor Proteins ; TCF Transcription Factors ; Transcription Factor 7-Like 1 Protein ; Transcription Factors/*antagonists & ; inhibitors/chemistry/genetics/metabolism/physiology ; Transcriptional Activation ; Transfection ; Twist Transcription Factor
    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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    Coupling of the RAS-MAPK pathway to gene activation by RSK2, a growth factor-regulated CREB kinase (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-08-16
    Description: A signaling pathway has been elucidated whereby growth factors activate the transcription factor cyclic adenosine monophosphate response element-binding protein (CREB), a critical regulator of immediate early gene transcription. Growth factor-stimulated CREB phosphorylation at serine-133 is mediated by the RAS-mitogen-activated protein kinase (MAPK) pathway. MAPK activates CREB kinase, which in turn phosphorylates and activates CREB. Purification, sequencing, and biochemical characterization of CREB kinase revealed that it is identical to a member of the pp90(RSK) family, RSK2. RSK2 was shown to mediate growth factor induction of CREB serine-133 phosphorylation both in vitro and in vivo. These findings identify a cellular function for RSK2 and define a mechanism whereby growth factor signals mediated by RAS and MAPK are transmitted to the nucleus to activate gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xing, J -- Ginty, D D -- Greenberg, M E -- CA43855/CA/NCI NIH HHS/ -- NS34814-01/NS/NINDS NIH HHS/ -- P30-HD18655/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1996 Aug 16;273(5277):959-63.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8688081" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Line ; Cell Nucleus/metabolism ; Cyclic AMP Response Element-Binding Protein/*metabolism ; Epidermal Growth Factor/pharmacology ; *Gene Expression Regulation ; Growth Substances/*pharmacology ; Humans ; Molecular Sequence Data ; Nerve Growth Factors/pharmacology ; PC12 Cells ; Phosphorylation ; Protein-Serine-Threonine Kinases/*metabolism ; Rats ; Ribosomal Protein S6 Kinases ; *Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Transcriptional Activation ; Transfection ; Tumor Cells, Cultured ; ras Proteins/metabolism
    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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    IRAK: a kinase associated with the interleukin-1 receptor (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-02-23
    Description: The pleiotropic biological activities of interleukin-1 (IL-1) are mediated by its type I receptor (IL-1RI). When the ligand binds, IL-1RI initiates a signaling cascade that results in the activation of the transcription regulator nuclear factor kappa B (NF-kappa B). A protein kinase designated IRAK (IL-1 receptor-associated kinase) was purified, and its complementary DNA was molecularly cloned. When human embryonic kidney cells (cell line 293) over-expressing IL-1RI or HeLa cells were exposed to IL-1, IRAK rapidly associated with the IL-1RI complex and was phosphorylated. The primary amino acid sequence of IRAK shares similarity with that of Pelle, a protein kinase that is essential for the activation of a NF-kappa B homolog in Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cao, Z -- Henzel, W J -- Gao, X -- New York, N.Y. -- Science. 1996 Feb 23;271(5252):1128-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biology Department, Tularik, Incorporated, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8599092" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Line ; Cloning, Molecular ; DNA, Complementary/genetics ; Drosophila ; *Drosophila Proteins ; HeLa Cells ; Humans ; Interleukin-1/*metabolism/pharmacology ; Interleukin-1 Receptor-Associated Kinases ; Molecular Sequence Data ; Phosphorylation ; Protein Kinases/chemistry/genetics/isolation & purification/*metabolism ; Protein-Serine-Threonine Kinases/chemistry ; Receptors, Interleukin-1/*metabolism ; Transfection
    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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  • 5
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    G protein-mediated neuronal DNA fragmentation induced by familial Alzheimer's disease-associated mutants of APP (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-31
    Description: Missense mutations in the 695-amino acid form of the amyloid precursor protein (APP695) cosegregate with disease phenotype in families with dominantly inherited Alzheimer's disease. These mutations convert valine at position 642 to isoleucine, phenylalanine, or glycine. Expression of these mutant proteins, but not of normal APP695, was shown to induce nucleosomal DNA fragmentation in neuronal cells. Induction of DNA fragmentation required the cytoplasmic domain of the mutants and appeared to be mediated by heterotrimeric guanosine triphosphate-binding proteins (G proteins).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamatsuji, T -- Matsui, T -- Okamoto, T -- Komatsuzaki, K -- Takeda, S -- Fukumoto, H -- Iwatsubo, T -- Suzuki, N -- Asami-Odaka, A -- Ireland, S -- Kinane, T B -- Giambarella, U -- Nishimoto, I -- New York, N.Y. -- Science. 1996 May 31;272(5266):1349-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cardiovascular Research Center, Massachusetts General Hospital, Department of Medicine, Harvard Medical School, Charlestown, MA 02129, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650548" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics/metabolism ; Amyloid beta-Peptides/metabolism ; Amyloid beta-Protein Precursor/chemistry/genetics/*physiology ; Animals ; Apoptosis ; Base Sequence ; Culture Media, Conditioned ; DNA/*metabolism ; GTP-Binding Proteins/*physiology ; Humans ; Hybrid Cells ; Mice ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Mutation ; Neurons/cytology/*metabolism ; Nucleosomes/*metabolism ; Peptide Fragments/metabolism ; Rats ; Transfection
    Print ISSN: 0036-8075
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  • 6
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    Identification of an estrogen response element activated by metabolites of 17beta-estradiol and raloxifene (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-08-30
    Description: 17beta-Estradiol modulates gene transcription through the estrogen receptor and the estrogen response element in DNA. The human transforming growth factor-beta3 gene was shown to be activated by the estrogen receptor in the presence of estrogen metabolites or estrogen antagonists. Activation was mediated by a polypurine sequence, termed the raloxifene response element, and did not require the DNA binding domain of the estrogen receptor. Interaction of the estrogen receptor with the raloxifene response element appears to require a cellular adapter protein. The observation that individual estrogens modulate multiple DNA response elements may explain the tissue-selective estrogen agonist or antagonist activity of compounds such as raloxifene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, N N -- Venugopalan, M -- Hardikar, S -- Glasebrook, A -- New York, N.Y. -- Science. 1996 Aug 30;273(5279):1222-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Endocrine Research, Lilly Research Labs, Eli Lilly and Co., Indianapolis, IN 46285, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703055" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Estradiol/metabolism/pharmacology ; Estrogen Antagonists/*pharmacology ; *Gene Expression Regulation ; Genes, Reporter ; Humans ; Ligands ; Molecular Sequence Data ; Piperidines/*pharmacology ; *Promoter Regions, Genetic ; Raloxifene Hydrochloride ; Receptors, Estrogen/*metabolism ; Transfection ; Transforming Growth Factor beta/*genetics ; Tumor Cells, Cultured
    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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  • 7
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    Developmental biology. Receptor for vital protein finally found (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roush, W -- New York, N.Y. -- Science. 1996 Jul 19;273(5273):309.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8685716" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Armadillo Domain Proteins ; Drosophila/embryology/*metabolism ; *Drosophila Proteins ; Frizzled Receptors ; Ligands ; Membrane Proteins/genetics/*metabolism ; Proteins/metabolism ; Proto-Oncogene Proteins/*metabolism ; Receptors, G-Protein-Coupled ; *Trans-Activators ; Transcription Factors ; Transfection ; Wnt1 Protein
    Print ISSN: 0036-8075
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  • 8
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    PIN: an associated protein inhibitor of neuronal nitric oxide synthase (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-01
    Description: The neurotransmitter functions of nitric oxide are dependent on dynamic regulation of its biosynthetic enzyme, neuronal nitric oxide synthase (nNOS). By means of a yeast two-hybrid screen, a 10-kilodalton protein was identified that physically interacts with and inhibits the activity of nNOS. This inhibitor, designated PIN, appears to be one of the most conserved proteins in nature, showing 92 percent amino acid identity with the nematode and rat homologs. Binding of PIN destabilizes the nNOS dimer, a conformation necessary for activity. These results suggest that PIN may regulate numerous biological processes through its effects on nitric oxide synthase activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaffrey, S R -- Snyder, S H -- DA00074/DA/NIDA NIH HHS/ -- GM-07309/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Nov 1;274(5288):774-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8864115" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carrier Proteins/chemistry/genetics/*metabolism/pharmacology ; Cell Line ; Cyclic GMP/metabolism ; Dimerization ; *Drosophila Proteins ; Dyneins ; Enzyme Inhibitors/chemistry/*metabolism/pharmacology ; Humans ; Molecular Sequence Data ; Molecular Weight ; Neurons/enzymology ; Nitric Oxide Synthase/*antagonists & inhibitors/metabolism ; Rats ; Recombinant Fusion Proteins/metabolism/pharmacology ; Saccharomyces cerevisiae ; Transfection
    Print ISSN: 0036-8075
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  • 9
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    Association of Src tyrosine kinase with a human potassium channel mediated by SH3 domain (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: The human Kv1.5 potassium channel (hKv1.5) contains proline-rich sequences identical to those that bind to Src homology 3 (SH3) domains. Direct association of the Src tyrosine kinase with cloned hKv1.5 and native hKv1.5 in human myocardium was observed. This interaction was mediated by the proline-rich motif of hKv1.5 and the SH3 domain of Src. Furthermore, hKv1.5 was tyrosine phosphorylated, and the channel current was suppressed, in cells coexpressing v-Src. These results provide direct biochemical evidence for a signaling complex composed of a potassium channel and a protein tyrosine kinase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holmes, T C -- Fadool, D A -- Ren, R -- Levitan, I B -- F32 NS009952/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2089-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02254, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953041" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Line ; Cloning, Molecular ; Humans ; Kv1.5 Potassium Channel ; Molecular Sequence Data ; Myocardium/chemistry ; Oncogene Protein pp60(v-src)/metabolism ; Patch-Clamp Techniques ; Phosphorylation ; Phosphotyrosine/metabolism ; Potassium Channels/chemistry/*metabolism ; *Potassium Channels, Voltage-Gated ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transfection ; src Homology Domains/*physiology ; src-Family Kinases/chemistry/*metabolism
    Print ISSN: 0036-8075
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  • 10
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    Requirement for BMP signaling in interdigital apoptosis and scale formation (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-03
    Description: Interdigital cell death leads to regression of soft tissue between embryonic digits in many vertebrates. Although the signals that regulate interdigital apoptosis are not known, BMPs--signaling molecules of the transforming growth factor-beta superfamily--are expressed interdigitally. A dominant negative type I BMP receptor (dnBMPR-IB) was used here to block BMP signaling. Expression of dnBMPR in chicken embryonic hind limbs greatly reduced interdigital apoptosis and resulted in webbed feet. In addition, scales were transformed into feathers. The similarity of the webbing to webbed duck feet led to studies that indicate that BMPs are not expressed in the duck interdigit. These results indicate BMP signaling actively mediates cell death in the embryonic limb.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zou, H -- Niswander, L -- New York, N.Y. -- Science. 1996 May 3;272(5262):738-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614838" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Bone Morphogenetic Protein Receptors, Type I ; Bone Morphogenetic Proteins ; Chick Embryo ; Ducks ; Feathers/cytology/*embryology ; Foot/embryology ; Gene Expression ; Hindlimb/cytology/*embryology ; In Situ Hybridization ; Mesoderm/metabolism ; Mice ; Mutagenesis, Site-Directed ; Phenotype ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Proteins/genetics/*physiology ; RNA/genetics/metabolism ; Receptors, Growth Factor/genetics/*metabolism ; *Signal Transduction ; Transfection
    Print ISSN: 0036-8075
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  • 11
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    Identification of scavenger receptor SR-BI as a high density lipoprotein receptor (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-01-26
    Description: High density lipoprotein (HDL) and low density lipoprotein (LDL) are cholesterol transport particles whose plasma concentrations are directly (LDL) and inversely (HDL) correlated with risk for atherosclerosis. LDL catabolism involves cellular uptake and degradation of the entire particle by a well-characterized receptor. HDL, in contrast, selectively delivers its cholesterol, but not protein, to cells by unknown receptors. Here it is shown that the class B scavenger receptor SR-BI is an HDL receptor. SR-BI binds HDL with high affinity, is expressed primarily in liver and nonplacental steroidogenic tissues, and mediates selective cholesterol uptake by a mechanism distinct from the classic LDL receptor pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Acton, S -- Rigotti, A -- Landschulz, K T -- Xu, S -- Hobbs, H H -- Krieger, M -- HL09047/HL/NHLBI NIH HHS/ -- HL41484/HL/NHLBI NIH HHS/ -- HL52212/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1996 Jan 26;271(5248):518-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8560269" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Glands/metabolism ; Animals ; Antigens, CD36/genetics/*metabolism ; CHO Cells ; *Carrier Proteins ; Cholesterol/metabolism ; Cholesterol Esters/*metabolism ; Cricetinae ; Female ; Fluorescent Dyes/metabolism ; Lipoproteins, HDL/*metabolism ; Liver/metabolism ; *Membrane Proteins ; Mice ; Molecular Sequence Data ; Ovary/metabolism ; *RNA-Binding Proteins ; *Receptors, Immunologic ; Receptors, LDL/metabolism ; Receptors, Lipoprotein/*metabolism ; Receptors, Scavenger ; Scavenger Receptors, Class B ; Thiazines/metabolism ; Transfection
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  • 12
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    Lymphocyte apoptosis: mediation by increased type 3 inositol 1,4,5-trisphosphate receptor (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-26
    Description: B and T lymphocytes undergoing apoptosis in response to anti-immunoglobulin M antibodies and dexamethasone, respectively, were found to have increased amounts of messenger RNA for the inositol 1,4,5-trisphosphate receptor (IP3R) and increased amounts of IP3R protein. Immunohistochemical analysis revealed that the augmented receptor population was localized to the plasma membrane. Type 3 IP3R (IP3R3) was selectively increased during apoptosis, with no enhancement of type 1 IP3R (IP3R1). Expression of IP3R3 antisense constructs in S49 T cells blocked dexamethasone-induced apoptosis, whereas IP3R3 sense, IP3R1 sense, or IP3R1 antisense control constructs did not block cell death. Thus, the increases in IP3R3 may be causally related to apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Khan, A A -- Soloski, M J -- Sharp, A H -- Schilling, G -- Sabatini, D M -- Li, S H -- Ross, C A -- Snyder, S H -- AI-20922/AI/NIAID NIH HHS/ -- AI-37934/AI/NIAID NIH HHS/ -- MH43040/MH/NIMH NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1996 Jul 26;273(5274):503-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, 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/8662540" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Apoptosis ; B-Lymphocytes/*cytology/metabolism ; Base Sequence ; Calcium/metabolism ; Calcium Channels/genetics/immunology/*metabolism ; Cell Line ; Cell Membrane/metabolism ; Cells, Cultured ; DNA, Antisense ; Dexamethasone/pharmacology ; Immunoblotting ; Inositol 1,4,5-Trisphosphate/*metabolism ; Inositol 1,4,5-Trisphosphate Receptors ; Mice ; Molecular Sequence Data ; Receptors, Cytoplasmic and Nuclear/genetics/immunology/*metabolism ; T-Lymphocytes/*cytology/metabolism ; Transfection ; Tumor Cells, Cultured
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  • 13
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    Requirement of an ICE-like protease for induction of apoptosis and ceramide generation by REAPER (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-02-09
    Description: Genetic studies indicated that the Drosophila melanogaster protein REAPER (RPR) controls apoptosis during embryo development. Induction of RPR expression in Drosophila Schneider cells rapidly stimulated apoptosis. RPR-mediated apoptosis was blocked by N-benzyloxycarbonyl-Val-Ala-Asp-fluoromethylketone (Z-VAD-fmk), which suggests that an interleukin-1 beta converting enzyme (ICE)-like protease is required for RPR function. RPR-induced apoptosis was associated with increased ceramide production that was also blocked by Z-VAD-fmk, which suggests that ceramide generation requires an ICE-like protease as well. Thus, the intracellular RPR protein uses cell death signaling pathways similar to those used by the vertebrate transmembrane receptors Fas (CD95) and tumor necrosis factor receptor type 1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pronk, G J -- Ramer, K -- Amiri, P -- Williams, L T -- New York, N.Y. -- Science. 1996 Feb 9;271(5250):808-10.〈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/8628997" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Chloromethyl Ketones/pharmacology ; Amino Acid Sequence ; Animals ; *Apoptosis/drug effects ; Caspase 1 ; Cell Line ; Ceramides/*metabolism/pharmacology ; Copper/pharmacology ; Copper Sulfate ; Cysteine Endopeptidases/*metabolism ; *Drosophila Proteins ; Drosophila melanogaster/*cytology/embryology/genetics/metabolism ; Enzyme Activation ; Gene Expression ; Molecular Sequence Data ; Peptides/genetics/*physiology ; Protease Inhibitors/pharmacology ; Signal Transduction ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 14
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    Pycnodysostosis, a lysosomal disease caused by cathepsin K deficiency (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-08-30
    Description: Pycnodysostosis, an autosomal recessive osteochondrodysplasia characterized by osteosclerosis and short stature, maps to chromosome 1q21. Cathepsin K, a cysteine protease gene that is highly expressed in osteoclasts, localized to the pycnodysostosis region. Nonsense, missense, and stop codon mutations in the gene encoding cathepsin K were identified in patients. Transient expression of complementary DNA containing the stop codon mutation resulted in messenger RNA but no immunologically detectable protein. Thus, pycnodysostosis results from gene defects in a lysosomal protease with highest expression in osteoclasts. These findings suggest that cathepsin K is a major protease in bone resorption, providing a possible rationale for the treatment of disorders such as osteoporosis and certain forms of arthritis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gelb, B D -- Shi, G P -- Chapman, H A -- Desnick, R J -- R01 DK31775/DK/NIDDK NIH HHS/ -- R01 HL44816/HL/NHLBI NIH HHS/ -- R37 DK34045/DK/NIDDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1996 Aug 30;273(5279):1236-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Genetics and Division of Pediatric Cardiology, Mount Sinai School of Medicine, New York, NY 10029, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703060" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Bone Matrix/metabolism ; Bone Resorption ; Cathepsin K ; Cathepsins/deficiency/*genetics/metabolism ; Chromosome Mapping ; Chromosomes, Human, Pair 1 ; Codon, Terminator ; Dinucleoside Phosphates/genetics ; Humans ; Lysosomal Storage Diseases/enzymology/*genetics ; Lysosomes/*enzymology ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Mutation ; Osteochondrodysplasias/enzymology/*genetics ; Osteoclasts/*enzymology ; Transfection
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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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    Activation of Pyk2 by stress signals and coupling with JNK signaling pathway (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-08-09
    Description: The c-Jun amino-terminal kinase (JNK) is activated by various heterotrimeric guanine nucleotide-binding protein (G protein)-coupled receptors, inflammatory cytokines, and stress signals. Yet, upstream mediators that link extracellular signals with the JNK signaling pathway are currently unknown. The tyrosine kinase Pyk2 was activated by tumor necrosis factor alpha, by ultraviolet irradiation, and by changes in osmolarity. Overexpression of Pyk2 led to activation of JNK, and a dominant-negative mutant of Pyk2 interfered with ultraviolet light- or osmotic shock-induced activation of JNK. Pyk2 represents a cell type-specific, stress-sensitive mediator of the JNK signaling pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tokiwa, G -- Dikic, I -- Lev, S -- Schlessinger, J -- New York, N.Y. -- Science. 1996 Aug 9;273(5276):792-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, New York University Medical Center, 550 First Avenue, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8670418" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anisomycin/pharmacology ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Egtazic Acid/pharmacology ; Enzyme Activation ; Focal Adhesion Kinase 2 ; GTP Phosphohydrolases/metabolism ; GTP-Binding Proteins/metabolism ; HL-60 Cells ; Humans ; JNK Mitogen-Activated Protein Kinases ; *Mitogen-Activated Protein Kinases ; Osmolar Concentration ; PC12 Cells ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; Rats ; *Signal Transduction ; Sorbitol/pharmacology ; Transfection ; Tumor Necrosis Factor-alpha/pharmacology ; Ultraviolet Rays
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  • 16
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    Stable expression of mosaic coats of variant surface glycoproteins in Trypanosoma brucei (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-06-21
    Description: The paradigm of antigenic variation in parasites is the variant surface glycoprotein (VSG) of African trypanosomes. Only one VSG is expressed at any time, except for short periods during switching. The reasons for this pattern of expression and the consequences of expressing more than one VSG are unknown. Trypanosoma brucei was genetically manipulated to generate cell lines that expressed two VSGs simultaneously. These VSGs were produced in equal amounts and were homogeneously distributed on the trypanosome surface. The double-expressor cells had similar population doubling times and were as infective as wild-type cells. Thus, the simultaneous expression of two VSGs is not intrinsically harmful.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Munoz-Jordan, J L -- Davies, K P -- Cross, G A -- AI 21531/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1996 Jun 21;272(5269):1795-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Parasitology, Rockefeller University, New York 10012, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650579" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigenic Variation ; Cell Membrane/chemistry ; Gentamicins/pharmacology ; Parasitemia ; Protein Synthesis Inhibitors/pharmacology ; Rats ; Transfection ; Trypanosoma brucei brucei/genetics/growth & ; development/immunology/*metabolism/pathogenicity ; Trypanosomiasis, African/parasitology ; Variant Surface Glycoproteins, Trypanosoma/analysis/*biosynthesis/genetics
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  • 17
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    Nonselective and G betagamma-insensitive weaver K+ channels (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-06-28
    Description: Homozygous weaver mice are profoundly ataxic because of the loss of granule cell neurons during cerebellar development. This granule cell loss appears to be caused by a genetic defect in the pore region (Gly156--〉Ser) of the heterotrimeric guanine nucleotide-binding protein (G protein)-gated inwardly rectifying potassium (K+) channel subunit (GIRK2). A related subunit, GIRK1, associates with GIRK2 to constitute a neuronal G protein-gated inward rectifier K+ channel. The weaver allele of the GIRK2 subunit (wvGIRK2) caused loss of K+ selectivity when expressed either as wvGIRK2 homomultimers or as GIRK1-wvGIRK2 heteromultimers. The mutation also let to loss of sensitivity to G protein betagamma dimers. Expression of wvGIRK2 subunits let to increased cell death, presumably as a result of basal nonselective channel opening.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Navarro, B -- Kennedy, M E -- Velimirovic, B -- Bhat, D -- Peterson, A S -- Clapham, D E -- New York, N.Y. -- Science. 1996 Jun 28;272(5270):1950-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Mayo Foundation, Rochester, Minnesota 55905, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8658170" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antisense Elements (Genetics) ; CHO Cells ; Cell Death ; Cell Line ; Cerebellum/cytology/*metabolism ; Cricetinae ; G Protein-Coupled Inwardly-Rectifying Potassium Channels ; GTP-Binding Proteins/*physiology ; Membrane Potentials ; Mice ; Mice, Neurologic Mutants ; Molecular Sequence Data ; Neurons/cytology/metabolism ; Oocytes/cytology ; Patch-Clamp Techniques ; Point Mutation ; Potassium Channels/genetics/*metabolism ; *Potassium Channels, Inwardly Rectifying ; Transfection
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  • 18
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    Interfering with apoptosis: Ca(2+)-binding protein ALG-2 and Alzheimer's disease gene ALG-3 (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-01-26
    Description: Two apoptosis-linked genes, named ALG-2 and ALG-3, were identified by means of a functional selection strategy. ALG-2 codes for a Ca(2+)-binding protein required for T cell receptor-, Fas-, and glucocorticoid-induced cell death. ALG-3, a partial complementary DNA that is homologous to the familial Alzheimer's disease gene STM2, rescues a T cell hybridoma from T cell receptor- and Fas-induced apoptosis. These findings suggest that ALG-2 may mediate Ca(2+)-regulated signals along the death pathway and that cell death may play a role in Alzheimer's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vito, P -- Lacana, E -- D'Adamio, L -- New York, N.Y. -- Science. 1996 Jan 26;271(5248):521-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉T Cell Molecular Biology Unit, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8560270" target="_blank"〉PubMed〈/a〉
    Keywords: Alkaloids/pharmacology ; Alzheimer Disease/*genetics ; Amino Acid Sequence ; Animals ; Antigens, CD95/metabolism ; *Apoptosis/drug effects ; Apoptosis Regulatory Proteins ; Calcium/metabolism ; Calcium-Binding Proteins/chemistry/genetics/*physiology ; Cell Line ; Cloning, Molecular ; DNA, Complementary ; Dactinomycin/pharmacology ; Dexamethasone/pharmacology ; Fas Ligand Protein ; Hybridomas ; Interleukin-2/metabolism ; Membrane Glycoproteins/metabolism ; Membrane Proteins/chemistry/genetics/*physiology ; Mice ; Molecular Sequence Data ; Presenilin-2 ; Receptors, Antigen, T-Cell/physiology ; Signal Transduction ; Staurosporine ; T-Lymphocytes ; Transfection ; Up-Regulation
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 19
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    Blockage by adenovirus E4orf6 of transcriptional activation by the p53 tumor suppressor (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-06-07
    Description: The adenovirus E4orf6 protein is shown here to interact with the cellular tumor suppressor protein p53 and to block p53-mediated transcriptional activation. The adenovirus protein inhibited the ability of p53 to bind to human TAFII31, a component of transcription factor IID (TFIID). Earlier work demonstrated that the interaction of p53 with TAFII31 involves a sequence near the NH2-terminus of p53, whereas the E4orf6-p53 interaction occurs within amino acids 318 to 360 of p53. Thus, the E4orf6 protein interacts at a site on p53 distinct from the domain that binds to TAFII31 but nevertheless inhibits the p53-TAFII31 interaction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dobner, T -- Horikoshi, N -- Rubenwolf, S -- Shenk, T -- New York, N.Y. -- Science. 1996 Jun 7;272(5267):1470-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Medizinische Mikrobiologie und Hygiene, Universitat Regensburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8633237" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviridae/physiology ; Adenovirus E4 Proteins/immunology/*metabolism ; Cell Line ; DNA/metabolism ; Genes, p53 ; HeLa Cells ; Humans ; Immunoblotting ; Recombinant Fusion Proteins/metabolism ; *TATA-Binding Protein Associated Factors ; Trans-Activators/*metabolism ; *Transcription Factor TFIID ; *Transcriptional Activation ; Transfection ; Tumor Suppressor Protein p53/chemistry/*metabolism
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  • 20
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    Immunostimulatory DNA sequences necessary for effective intradermal gene immunization (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-19
    Description: Vaccination with naked DNA elicits cellular and humoral immune responses that have a T helper cell type 1 bias. However, plasmid vectors expressing large amounts of gene product do not necessarily induce immune responses to the encoded antigens. Instead, the immunogenicity of plasmid DNA (pDNA) requires short immunostimulatory DNA sequences (ISS) that contain a CpG dinucleotide in a particular base context. Human monocytes transfected with pDNA or double-stranded oligonucleotides containing the ISS, but not those transfected with ISS-deficient pDNA or oligonucleotides, transcribed large amounts of interferon-alpha, interferon-beta, and interleukin-12. Although ISS are necessary for gene vaccination, they down-regulate gene expression and thus may interfere with gene replacement therapy by inducing proinflammatory cytokines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sato, Y -- Roman, M -- Tighe, H -- Lee, D -- Corr, M -- Nguyen, M D -- Silverman, G J -- Lotz, M -- Carson, D A -- Raz, E -- AI36214/AI/NIAID NIH HHS/ -- AI37305/AI/NIAID NIH HHS/ -- AR41897/AR/NIAMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1996 Jul 19;273(5273):352-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine and The Sam and Rose Stein Institute for Research on Aging, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0663, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8662521" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Ampicillin Resistance/*genetics ; Animals ; *Antibody Formation ; Base Sequence ; CpG Islands ; Cytokines/*biosynthesis ; DNA/chemistry/genetics/*immunology ; Female ; Gene Expression Regulation ; Genetic Vectors ; Humans ; Injections, Intradermal ; Interferons/biosynthesis ; Interleukin-12/biosynthesis ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Monocytes/immunology ; Plasmids/genetics/*immunology ; Th1 Cells/immunology ; Transfection ; *Vaccination ; beta-Galactosidase/*immunology
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  • 21
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    Enhancement of antitumor immunity by CTLA-4 blockade (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-03-22
    Description: One reason for the poor immunogenicity of many tumors may be that they cannot provide signals for CD28-mediated costimulation necessary to fully activate T cells. It has recently become apparent that CTLA-4, a second counterreceptor for the B7 family of costimulatory molecules, is a negative regulator of T cell activation. Here, in vivo administration of antibodies to CTLA-4 resulted in the rejection of tumors, including preestablished tumors. Furthermore, this rejection resulted in immunity to a secondary exposure to tumor cells. These results suggest that blockade of the inhibitory effects of CTLA-4 can allow for, and potentiate, effective immune responses against tumor cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leach, D R -- Krummel, M F -- Allison, J P -- CA09179/CA/NCI NIH HHS/ -- CA40041/CA/NCI NIH HHS/ -- CA57986/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Mar 22;271(5256):1734-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research Laboratory, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8596936" target="_blank"〉PubMed〈/a〉
    Keywords: Abatacept ; Animals ; Antibodies/immunology ; Antigens, CD ; Antigens, CD28/immunology ; Antigens, CD80/immunology ; Antigens, Differentiation/*immunology ; CTLA-4 Antigen ; Female ; Graft Rejection ; *Immunoconjugates ; Immunologic Memory ; *Lymphocyte Activation ; Mice ; Mice, Inbred A ; Mice, Inbred BALB C ; Neoplasm Transplantation ; Neoplasms, Experimental/*immunology ; T-Lymphocytes/*immunology ; Transfection ; Tumor Cells, Cultured
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  • 22
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    An essential role for NF-kappaB in preventing TNF-alpha-induced cell death (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-01
    Description: Studies on mice deficient in nuclear factor kappa B (NF-kappaB) subunits have shown that this transcription factor is important for lymphocyte responses to antigens and cytokine-inducible gene expression. In particular, the RelA (p65) subunit is required for induction of tumor necrosis factor-alpha (TNF-alpha)-dependent genes. Treatment of RelA-deficient (RelA-/-) mouse fibroblasts and macrophages with TNF-alpha resulted in a significant reduction in viability, whereas RelA+/+ cells were unaffected. Cytotoxicity to both cell types was mediated by TNF receptor 1. Reintroduction of RelA into RelA-/- fibroblasts resulted in enhanced survival, demonstrating that the presence of RelA is required for protection from TNF-alpha. These results have implications for the treatment of inflammatory and proliferative diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beg, A A -- Baltimore, D -- New York, N.Y. -- Science. 1996 Nov 1;274(5288):782-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8864118" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Antigens, CD/metabolism ; *Cell Death ; Cell Survival ; Cells, Cultured ; Gene Expression Regulation ; Humans ; Macrophages/cytology ; Mice ; NF-kappa B/genetics/*physiology ; Receptors, Tumor Necrosis Factor/metabolism ; Receptors, Tumor Necrosis Factor, Type I ; Signal Transduction ; Transcription Factor RelA ; Transfection ; Tumor Necrosis Factor-alpha/*pharmacology/physiology
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  • 23
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    Luteinizing hormone deficiency and female infertility in mice lacking the transcription factor NGFI-A (Egr-1) (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-08-30
    Description: The immediate-early transcription factor NGFI-A (also called Egr-1, zif/268, or Krox-24) is thought to couple extracellular signals to changes in gene expression. Although activins and inhibins regulate follicle-stimulating hormone (FSH) synthesis, no factor has been identified that exclusively regulates luteinizing hormone (LH) synthesis. An analysis of NGFI-A-deficient mice derived from embryonic stem cells demonstrated female infertility that was secondary to LH-beta deficiency. Ovariectomy led to increased amounts of FSH-beta but not LH-beta messenger RNA, which suggested a pituitary defect. A conserved, canonical NGFI-A site in the LH-beta promoter was required for synergistic activation by NGFI-A and steroidogenic factor-1 (SF-1). NGFI-A apparently influences female reproductive capacity through its regulation of LH-beta transcription.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, S L -- Sadovsky, Y -- Swirnoff, A H -- Polish, J A -- Goda, P -- Gavrilina, G -- Milbrandt, J -- CA53524/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Aug 30;273(5279):1219-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703054" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; DNA-Binding Proteins/*genetics ; Early Growth Response Protein 1 ; Female ; Follicle Stimulating Hormone/genetics ; Follicle Stimulating Hormone, beta Subunit ; Fushi Tarazu Transcription Factors ; *Gene Expression Regulation ; Gene Targeting ; Gonadotropins/pharmacology ; Homeodomain Proteins ; *Immediate-Early Proteins ; Infertility, Female/*genetics ; Luteinizing Hormone/analysis/*deficiency/*genetics ; Male ; Mice ; Molecular Sequence Data ; Ovary/drug effects/physiology ; Pituitary Gland/metabolism ; Promoter Regions, Genetic ; Receptors, Cytoplasmic and Nuclear ; Steroidogenic Factor 1 ; Transcription Factors/*genetics ; Transfection ; Uterus/drug effects ; Zinc Fingers
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  • 24
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    Association of anxiety-related traits with a polymorphism in the serotonin transporter gene regulatory region (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-29
    Description: Transporter-facilitated uptake of serotonin (5-hydroxytryptamine or 5-HT) has been implicated in anxiety in humans and animal models and is the site of action of widely used uptake-inhibiting antidepressant and antianxiety drugs. Human 5-HT transporter (5-HTT) gene transcription is modulated by a common polymorphism in its upstream regulatory region. The short variant of the polymorphism reduces the transcriptional efficiency of the 5-HTT gene promoter, resulting in decreased 5-HTT expression and 5-HT uptake in lymphoblasts. Association studies in two independent samples totaling 505 individuals revealed that the 5-HTT polymorphism accounts for 3 to 4 percent of total variation and 7 to 9 percent of inherited variance in anxiety-related personality traits in individuals as well as sibships.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lesch, K P -- Bengel, D -- Heils, A -- Sabol, S Z -- Greenberg, B D -- Petri, S -- Benjamin, J -- Muller, C R -- Hamer, D H -- Murphy, D L -- New York, N.Y. -- Science. 1996 Nov 29;274(5292):1527-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry, University of Wurzburg, Fuchsleinstrasse 15, 97080 Wurzburg, Germany. kplesch@rzbox.uni-wuerzburg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8929413" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Alleles ; Anxiety Disorders/*genetics ; Carrier Proteins/*genetics ; Cell Line ; Female ; Genetic Markers ; Genotype ; Humans ; Male ; Membrane Glycoproteins/*genetics ; *Membrane Transport Proteins ; Middle Aged ; *Nerve Tissue Proteins ; Neurotic Disorders/*genetics ; Nuclear Family ; Personality Tests ; Phenotype ; *Polymorphism, Genetic ; *Promoter Regions, Genetic ; Serotonin/*metabolism ; Serotonin Plasma Membrane Transport Proteins ; Transfection
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  • 25
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    Mutagenesis in mammalian cells induced by triple helix formation and transcription-coupled repair (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-02-09
    Description: When mammalian cells were treated with triplex-forming oligonucleotides of sufficient binding affinity, mutations were specifically induced in a simian virus 40 vector contained within the cells. Triplex-induced mutagenesis was not detected in xeroderma pigmentosum group A cells nor in Cockayne's syndrome group B cells, indicating a requirement for excision repair and for transcription-coupled repair, respectively, in the process. Triplex formation was also found to stimulate DNA repair synthesis in human cell extracts, in a pattern correlating with the inhibition of transcription in such extracts. These findings may have implications for therapeutic applications of triplex DNA and raise the possibility that naturally occurring triple helices are a source of genetic instability.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, G -- Seidman, M M -- Glazer, P M -- CA64186/CA/NCI NIH HHS/ -- ES05775/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1996 Feb 9;271(5250):802-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT 06520-8040, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8628995" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; DNA/biosynthesis/*metabolism ; *DNA Repair ; Genetic Vectors ; Haplorhini ; HeLa Cells ; Humans ; Molecular Sequence Data ; *Mutagenesis ; Oligodeoxyribonucleotides/*metabolism ; Point Mutation ; Sequence Deletion ; *Transcription, Genetic ; Transfection
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  • 26
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    Resistance to apoptosis conferred by Cdk inhibitors during myocyte differentiation (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-19
    Description: Proliferating murine C2C12 myoblasts can undergo either terminal differentiation or programmed cell death under conditions of mitogen deprivation. Unlike myoblasts, differentiated myotubes were resistant to apoptosis. During myogenesis the appearance of the apoptosis-resistant phenotype was correlated with the induction of the cyclin-dependent kinase (Cdk) inhibitor p21(CIP1) but not with the appearance of myogenin, a marker expressed earlier in differentiation. Forced expression of the Cdk inhibitors p21(CIP1) or p16(INK4A) blocked apoptosis during myocyte differentiation. These data indicate that induction of Cdk inhibitors may serve to protect differentiating myocytes from programmed cell death as well as play a role in establishing the postmitotic state.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3641673/" 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/PMC3641673/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, J -- Walsh, K -- AR40197/AR/NIAMS NIH HHS/ -- HL50692/HL/NHLBI NIH HHS/ -- R01 AG015052/AG/NIA NIH HHS/ -- R01 AR040197/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Jul 19;273(5273):359-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cardiovascular Research, St. Elizabeth's Medical Center and Tufts University School of Medicine, Boston, MA 02135, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8662523" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Carrier Proteins/biosynthesis/genetics/*physiology ; *Cell Differentiation ; Cell Line ; Culture Media ; Cyclin-Dependent Kinase Inhibitor p16 ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclin-Dependent Kinases/*antagonists & inhibitors ; Cyclins/biosynthesis/genetics/*physiology ; Enzyme Inhibitors/metabolism ; Mice ; Muscles/*cytology/metabolism ; Myogenin/biosynthesis ; Phenotype ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 27
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    RAG mutations in human B cell-negative SCID (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-10-04
    Description: Patients with human severe combined immunodeficiency (SCID) can be divided into those with B lymphocytes (B+ SCID) and those without (B- SCID). Although several genetic causes are known for B+ SCID, the etiology of B- SCID has not been defined. Six of 14 B- SCID patients tested were found to carry a mutation of the recombinase activating gene 1 (RAG-1), RAG-2, or both. This mutation resulted in a functional inability to form antigen receptors through genetic recombination and links a defect in one of the site-specific recombination systems to a human disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwarz, K -- Gauss, G H -- Ludwig, L -- Pannicke, U -- Li, Z -- Lindner, D -- Friedrich, W -- Seger, R A -- Hansen-Hagge, T E -- Desiderio, S -- Lieber, M R -- Bartram, C R -- New York, N.Y. -- Science. 1996 Oct 4;274(5284):97-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Molecular Biology, University of Ulm, D-89070 Ulm, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8810255" target="_blank"〉PubMed〈/a〉
    Keywords: B-Lymphocytes/immunology ; Cell Line ; Consanguinity ; *DNA-Binding Proteins ; Female ; Genes, Immunoglobulin ; Genes, Recessive ; *Homeodomain Proteins ; Humans ; Immunophenotyping ; Male ; Mutation ; Nuclear Proteins ; Polymorphism, Single-Stranded Conformational ; Proteins/*genetics ; Receptors, Antigen, T-Cell/genetics ; Recombination, Genetic ; Sequence Deletion ; Severe Combined Immunodeficiency/*genetics/immunology ; Transfection
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  • 28
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    NF-AT-Driven interleukin-4 transcription potentiated by NIP45 (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-13
    Description: The induction of cytokine gene transcription is mediated in part by the nuclear factor of activated T cells (NF-AT). Factors involved in the mechanisms of NF-AT-mediated transcription are not well understood. A nuclear factor that interacted with the Rel homology domain (RHD) of NF-ATp was identified with the use of a two-hybrid interaction trap. Designated NIP45 (NF-AT interacting protein), it has minimal similarity to any known genes. Transcripts encoding this factor were enriched in lymphoid tissues and testes. NIP45 synergized with NF-ATp and the proto-oncogene c-Maf to activate the interleukin-4 (IL-4) cytokine promoter; transient overexpression of NIP45 with NF-ATp and c-maf in B lymphoma cells induced measurable endogenous IL-4 protein production. The identification of NIP45 advances our understanding of gene activation of cytokines, critical mediators of the immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hodge, M R -- Chun, H J -- Rengarajan, J -- Alt, A -- Lieberson, R -- Glimcher, L H -- AI37833/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 13;274(5294):1903-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Harvard School of Public Health and 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/8943202" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/chemistry/genetics/*metabolism ; Cell Line ; Cell Nucleus/metabolism ; Cloning, Molecular ; DNA-Binding Proteins/*metabolism ; Genes, Reporter ; Humans ; Interleukin-4/*genetics ; *Intracellular Signaling Peptides and Proteins ; Male ; Molecular Sequence Data ; NFATC Transcription Factors ; Nuclear Proteins/chemistry/genetics/*metabolism ; Promoter Regions, Genetic ; Recombinant Fusion Proteins/metabolism ; Spleen/metabolism ; Testis/metabolism ; Thymus Gland/metabolism ; Transcription Factors/*metabolism ; *Transcriptional Activation ; Transfection ; Tumor Cells, Cultured
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  • 29
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    Inhibition of adipogenesis through MAP kinase-mediated phosphorylation of PPARgamma (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: Adipocyte differentiation is an important component of obesity and other metabolic diseases. This process is strongly inhibited by many mitogens and oncogenes. Several growth factors that inhibit fat cell differentiation caused mitogen-activated protein (MAP) kinase-mediated phosphorylation of the dominant adipogenic transcription factor peroxisome proliferator-activated receptor gamma (PPARgamma) and reduction of its transcriptional activity. Expression of PPARgamma with a nonphosphorylatable mutation at this site (serine-112) yielded cells with increased sensitivity to ligand-induced adipogenesis and resistance to inhibition of differentiation by mitogens. These results indicate that covalent modification of PPARgamma by serum and growth factors is a major regulator of the balance between cell growth and differentiation in the adipose cell lineage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, E -- Kim, J B -- Sarraf, P -- Spiegelman, B M -- R37DK31405/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2100-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute and Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953045" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Adipocytes/*cytology/metabolism ; Animals ; Blood ; Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors/*metabolism ; Cell Differentiation ; Cell Line ; Enzyme Inhibitors/pharmacology ; Epidermal Growth Factor/pharmacology ; Flavonoids/pharmacology ; Insulin/pharmacology ; Ligands ; Mice ; Mitogens/pharmacology ; Mutation ; Phosphorylation ; Rats ; Receptors, Cytoplasmic and Nuclear/chemistry/genetics/*metabolism ; Tetradecanoylphorbol Acetate/pharmacology ; Transcription Factors/chemistry/genetics/*metabolism ; Transcription, Genetic/drug effects ; Transfection
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  • 30
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    HIV-1 entry cofactor: functional cDNA cloning of a seven-transmembrane, G protein-coupled receptor (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-10
    Description: A cofactor for HIV-1 (human immunodeficiency virus-type 1) fusion and entry was identified with the use of a novel functional complementary DNA (cDNA) cloning strategy. This protein, designated "fusin," is a putative G protein-coupled receptor with seven transmembrane segments. Recombinant fusin enabled CD4-expressing nonhuman cell types to support HIV-1 Env-mediated cell fusion and HIV-1 infection. Antibodies to fusin blocked cell fusion and infection with normal CD4-positive human target cells. Fusin messenger RNA levels correlated with HIV-1 permissiveness in diverse human cell types. Fusin acted preferentially for T cell line-tropic isolates, in comparison to its activity with macrophagetropic HIV-1 isolates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feng, Y -- Broder, C C -- Kennedy, P E -- Berger, E A -- New York, N.Y. -- Science. 1996 May 10;272(5263):872-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8629022" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Amino Acid Sequence ; Animals ; Antigens, CD4/*physiology ; CD4-Positive T-Lymphocytes/virology ; Cell Line ; Cell Membrane/virology ; Chemokines/physiology ; *Cloning, Molecular ; DNA, Complementary/genetics ; Disease Models, Animal ; GTP-Binding Proteins/metabolism ; Giant Cells ; HIV Envelope Protein gp120/physiology ; HIV-1/*pathogenicity/physiology ; HeLa Cells ; Humans ; Leukocytes, Mononuclear/virology ; Macrophages/virology ; *Membrane Fusion ; Membrane Proteins/genetics/*physiology ; Mice ; Molecular Sequence Data ; RNA, Messenger/metabolism ; Receptors, CXCR4 ; Recombinant Proteins ; Transfection
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  • 31
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    Hyperresponsive B cells in CD22-deficient mice (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-01
    Description: CD22 is a surface glycoprotein of B lymphocytes that is rapidly phosphorylated on cytoplasmic tyrosines after antigen receptor cross-linking. Splenic B cells from mice with a disrupted CD22 gene were found to be hyperresponsive to receptor signaling: Heightened calcium fluxes and cell proliferation were obtained at lower ligand concentrations. The mice gave an augmented immune response, had an expanded peritoneal B-1 cell population, and contained increased serum titers of autoantibody. Thus, CD22 is a negative regulator of antigen receptor signaling whose onset of expression at the mature B cell stage may serve to raise the antigen concentration threshold required for B cell triggering.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Keefe, T L -- Williams, G T -- Davies, S L -- Neuberger, M S -- New York, N.Y. -- Science. 1996 Nov 1;274(5288):798-801.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8864124" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Antinuclear/blood ; Antibody Formation ; Antigens, CD/genetics/*immunology/metabolism ; Antigens, Differentiation, B-Lymphocyte/genetics/*immunology/metabolism ; B-Lymphocytes/*immunology/metabolism ; Calcium/metabolism ; *Cell Adhesion Molecules ; Female ; Gene Targeting ; Immunization ; Immunoglobulin M/blood ; Immunophenotyping ; *Lectins ; Lymphocyte Activation ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Phosphorylation ; Receptors, Antigen, B-Cell/immunology/physiology ; Sialic Acid Binding Ig-like Lectin 2 ; Signal Transduction ; Transfection
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  • 32
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    Direct regulation of ZAP-70 by SHP-1 in T cell antigen receptor signaling (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-24
    Description: The threshold at which antigen triggers lymphocyte activation is set by the enzymes that regulate tyrosine phosphorylation. Upon T cell activation, the protein tyrosine phosphatase SHP-1 was found to bind to the protein tyrosine kinase ZAP-70. This interaction resulted in an increase in SHP-1 phosphatase activity and a decrease in ZAP-70 kinase activity. Expression of a dominant negative mutant of SHP-1 in T cells increased the sensitivity of the antigen receptor. Thus, SHP-1 functions as a negative regulator of the T cell antigen receptor and in setting the threshold of activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Plas, D R -- Johnson, R -- Pingel, J T -- Matthews, R J -- Dalton, M -- Roy, G -- Chan, A C -- Thomas, M L -- New York, N.Y. -- Science. 1996 May 24;272(5265):1173-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Center for Immunology, Washington University Medical School, St Louis, Missouri 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638162" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; HeLa Cells ; Humans ; Intracellular Signaling Peptides and Proteins ; Lymphocyte Activation ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck) ; Mutation ; Phosphorylation ; Phosphotyrosine/metabolism ; Protein Tyrosine Phosphatase, Non-Receptor Type 11 ; Protein Tyrosine Phosphatase, Non-Receptor Type 6 ; Protein Tyrosine Phosphatases/genetics/*metabolism ; Protein-Tyrosine Kinases/*metabolism ; Receptors, Antigen, T-Cell/*metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; T-Lymphocytes/immunology/*metabolism ; Transfection ; Tumor Cells, Cultured ; ZAP-70 Protein-Tyrosine Kinase ; src-Family Kinases/metabolism
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  • 33
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    Likely HIV cofactor found (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1996 May 10;272(5263):809-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8629006" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD4/*physiology ; CD4-Positive T-Lymphocytes/virology ; Cell Line ; Cell Membrane/*virology ; Chemokines/physiology ; DNA, Complementary ; HIV/*pathogenicity/physiology ; HIV Infections/drug therapy/immunology/virology ; Humans ; *Membrane Fusion ; Membrane Proteins/genetics/*physiology ; Receptors, CXCR4 ; Transfection
    Print ISSN: 0036-8075
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  • 34
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    Requirement of CDC42 for Salmonella-induced cytoskeletal and nuclear responses (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: The bacterial pathogen Salmonella typhimurium triggers host cell signaling pathways that lead to cytoskeletal and nuclear responses required for pathogenesis. Here, the role of the small guanosine triphosphate (GTP)-binding protein CDC42Hs in these responses was examined. Expression of a dominant interfering mutant of CDC42 (CDC42HsN17) prevented S. typhimurium-induced cytoskeletal reorganization and subsequent macropinocytosis and bacterial internalization into host cells. Cells expressing constitutively active CDC42 (CDC42HsV12) internalized an S. typhimurium mutant unable to trigger host cell responses. Furthermore, expression of CDC42HsN17 prevented S. typhimurium-induced JNK kinase activation. These results indicate that CDC42 is required for bacterial invasion and induction of nuclear responses in host cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, L M -- Hobbie, S -- Galan, J E -- GM52543/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2115-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Microbiology, School of Medicine, State University of New York at Stony Brook, Stony Brook, NY, 11794-5222, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953049" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; COS Cells ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Cycle Proteins/genetics/*physiology ; Cell Nucleus/*metabolism ; Cytoskeleton/*ultrastructure ; Enzyme Activation ; GTP-Binding Proteins/genetics/*physiology ; JNK Mitogen-Activated Protein Kinases ; *Mitogen-Activated Protein Kinases ; Pinocytosis ; Salmonella typhimurium/*physiology ; Signal Transduction ; Transfection ; cdc42 GTP-Binding Protein ; rac GTP-Binding Proteins
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  • 35
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    Somatic mutation of immunoglobulin V genes in vitro (1996)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1996-03-01
    Description: The molecular mechanism behind affinity maturation is the introduction of point mutations in immunoglobulin (Ig) V genes, followed by the selective proliferation of B cells expressing mutants with increased affinity for antigen. An in vitro culture system was developed in which somatic hypermutation of Ig V genes was sustained in primed B cells. Cognate T cell help and cross-linking of the surface Ig were required, whereas the addition of lipopolysaccharide or a CD40 ligand to drive proliferation was insufficient. This system should facilitate understanding of the molecular and cellular mechanisms that regulate somatic mutation and B cell selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kallberg, E -- Jainandunsing, S -- Gray, D -- Leanderson, T -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1996 Mar 1;271(5253):1285-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunology Unit, Lund University, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638111" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD40 ; B-Lymphocytes/*immunology ; Base Sequence ; CD40 Ligand ; Cells, Cultured ; Coculture Techniques ; *Genes, Immunoglobulin ; Haptens/immunology ; Hybridomas ; Immunoglobulin Variable Region/*genetics ; Lipopolysaccharides/pharmacology ; Membrane Glycoproteins/metabolism ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; *Mutation ; Ovalbumin/immunology ; Oxazolone/analogs & derivatives/immunology ; Receptors, Antigen, B-Cell/immunology ; Th2 Cells/immunology ; Transfection
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  • 36
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    Cell growth arrest and induction of cyclin-dependent kinase inhibitor p21 WAF1/CIP1 mediated by STAT1 (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-03
    Description: Signal transducers and activators of transcription (STAT) proteins can be conditionally activated in response to epidermal growth factor (EGF) and interferon (IFN)-gamma. STAT activation was correlated with cell growth inhibition in response to EGF and IFN-gamma. Activated STAT proteins specifically recognized the conserved STAT-responsive elements in the promoter of the gene encoding the cyclin-dependent kinase (CDK) inhibitor p21 WAF1/CIP1 and regulated the induction of p21 messenger RNA. IFN-gamma did not inhibit the growth of U3A cells, which are deficient in STAT1, but did inhibit the growth of U3A cells into which STAT1 alpha was reintroduced. Thus, STAT1 protein is essential for cell growth suppression in response to IFN-gamma. The STAT signaling pathway appears to negatively regulate the cell cycle by inducing CDK inhibitors in response to cytokines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chin, Y E -- Kitagawa, M -- Su, W C -- You, Z H -- Iwamoto, Y -- Fu, X Y -- R01 AI34522/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1996 May 3;272(5262):719-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Yale University School of Medicine, New Haven, CT 06520-8023, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614832" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; *Cell Division/drug effects ; Cell Line ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclins/biosynthesis/*genetics ; DNA/biosynthesis ; DNA-Binding Proteins/metabolism/*physiology ; Epidermal Growth Factor/pharmacology ; *Gene Expression Regulation ; Humans ; Interferon-gamma/pharmacology ; Molecular Sequence Data ; Promoter Regions, Genetic ; RNA, Messenger/genetics/metabolism ; STAT1 Transcription Factor ; STAT3 Transcription Factor ; *Signal Transduction ; Trans-Activators/metabolism/*physiology ; 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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  • 37
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    Signal transduction by DR3, a death domain-containing receptor related to TNFR-1 and CD95 (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-08
    Description: Tumor necrosis factor receptor-1 (TNFR-1) and CD95 (also called Fas or APO-1) are cytokine receptors that engage the apoptosis pathway through a region of intracellular homology, designated the "death domain." Another death domain-containing member of the TNFR family, death receptor 3 (DR3), was identified and was shown to induce both apoptosis and activation of nuclear factor kappaB. Expression of DR3 appears to be restricted to tissues enriched in lymphocytes. DR3 signal transduction is mediated by a complex of intracellular signaling molecules including TRADD, TRAF2, FADD, and FLICE. Thus, DR3 likely plays a role in regulating lymphocyte homeostasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chinnaiyan, A M -- O'Rourke, K -- Yu, G L -- Lyons, R H -- Garg, M -- Duan, D R -- Xing, L -- Gentz, R -- Ni, J -- Dixit, V M -- GM-07863/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Nov 8;274(5289):990-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, USA. Sciences Inc., 9620 Medical Center Driv.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8875942" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Antigens, CD95/chemistry/physiology ; *Apoptosis ; Carrier Proteins/metabolism ; Caspase 8 ; Caspase 9 ; *Caspases ; Cloning, Molecular ; Cysteine Endopeptidases/metabolism ; Fas-Associated Death Domain Protein ; Gene Library ; Humans ; Lymphocytes ; Molecular Sequence Data ; NF-kappa B/*physiology ; Organ Specificity ; Proteins/metabolism ; RNA, Messenger/analysis/genetics ; Receptors, Tumor Necrosis Factor/chemistry/genetics/*physiology ; Receptors, Tumor Necrosis Factor, Member 25 ; Sequence Alignment ; *Signal Transduction ; TNF Receptor-Associated Factor 1 ; TNF Receptor-Associated Factor 2 ; Transfection ; Tumor Cells, Cultured
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    Cytoplasmic tail-dependent localization of CD1b antigen-presenting molecules to MIICs (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-19
    Description: CD1 proteins have been implicated as antigen-presenting molecules for T cell-mediated immune responses, but their intracellular localization and trafficking remain uncharacterized. CD1b, a member of this family that presents microbial lipid antigens of exogenous origin, was found to localize to endocytic compartments that included the same specialized subset of endosomes in which major histocompatibility complex (MHC) class II molecules are proposed to bind endocytosed antigens. Unlike MHC class II molecules, which traffic to antigen-loading endosomal compartments [MHC class II compartments (MIICs)] primarily as a consequence of their association with the invariant chain, localization of CD1b to these compartments was dependent on a tyrosine-based motif in its own cytoplasmic tail.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sugita, M -- Jackman, R M -- van Donselaar, E -- Behar, S M -- Rogers, R A -- Peters, P J -- Brenner, M B -- Porcelli, S A -- New York, N.Y. -- Science. 1996 Jul 19;273(5273):349-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lymphocyte Biology Section, Division of Rheumatology and Immunology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8662520" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, CD1/analysis/chemistry/*metabolism ; B-Lymphocytes ; Base Sequence ; Cell Compartmentation ; Cell Line ; Cell Membrane/immunology ; Coated Pits, Cell-Membrane/immunology ; Endocytosis ; Endosomes/*immunology/ultrastructure ; HLA-D Antigens/analysis ; HeLa Cells ; Histocompatibility Antigens Class II/analysis/*metabolism ; Humans ; Microscopy, Immunoelectron ; Molecular Sequence Data ; Monocytes/immunology ; Transfection
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    A role for endothelial NO synthase in LTP revealed by adenovirus-mediated inhibition and rescue (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-06
    Description: Pharmacological studies support the idea that nitric oxide (NO) serves as a retrograde messenger during long-term potentiation (LTP) in area CA1 of the hippocampus. Mice with a defective form of the gene for neuronal NO synthase (nNOS), however, exhibit normal LTP. The myristoyl protein endothelial NOS (eNOS) is present in the dendrites of CA1 neurons. Recombinant adenovirus vectors containing either a truncated eNOS (a putative dominant negative) or an eNOS fused to a transmembrane protein were used to demonstrate that membrane-targeted eNOS is required for LTP. The membrane localization of eNOS may optimally position the enzyme both to respond to Ca2+ influx and to release NO into the extracellular space during LTP induction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kantor, D B -- Lanzrein, M -- Stary, S J -- Sandoval, G M -- Smith, W B -- Sullivan, B M -- Davidson, N -- Schuman, E M -- 49176/PHS HHS/ -- NS37292/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 6;274(5293):1744-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology 216-76, California Institute of Technology, Pasadena, CA 91125, USA. schumane@cco.caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8939872" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviridae/genetics ; Animals ; CHO Cells ; Cell Membrane/enzymology ; Cricetinae ; Cytosol/enzymology ; Endothelium/*enzymology ; Genetic Vectors ; Hippocampus/*physiology ; In Vitro Techniques ; *Long-Term Potentiation/drug effects ; Mice ; Myristic Acid ; Myristic Acids/metabolism/pharmacology ; Neurons/*physiology ; Nitric Oxide Synthase/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Synaptic Transmission ; Transfection
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    A receptor for the selective uptake and degradation of proteins by lysosomes (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-26
    Description: Multiple pathways of protein degradation operate within cells. A selective protein import pathway exists for the uptake and degradation of particular cytosolic proteins by lysosomes. Here, the lysosomal membrane glycoprotein LGP96 was identified as a receptor for the selective import and degradation of proteins within lysosomes. Specific substrates of this proteolytic pathway bound to the cytosolic tail of a 96-kilodalton lysosomal membrane protein in two different binding assays. Overexpression of human LGP96 in Chinese hamster ovary cells increased the activity of the selective lysosomal proteolytic pathway in vivo and in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cuervo, A M -- Dice, J F -- AG06116/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1996 Jul 26;273(5274):501-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8662539" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD/chemistry/*metabolism ; CHO Cells ; Cricetinae ; Glyceraldehyde-3-Phosphate Dehydrogenases/*metabolism ; HSC70 Heat-Shock Proteins ; *HSP70 Heat-Shock Proteins ; Heat-Shock Proteins/metabolism ; Humans ; Intracellular Membranes/metabolism ; Lysosomal-Associated Membrane Protein 2 ; Lysosome-Associated Membrane Glycoproteins ; Lysosomes/*metabolism ; Membrane Glycoproteins/chemistry/*metabolism ; Molecular Sequence Data ; Proteins/*metabolism ; Rats ; Ribonuclease, Pancreatic/*metabolism ; Transfection
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    Enhanced degradation of EGF receptors by a sorting nexin, SNX1 (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-17
    Description: The vectorial movement of proteins requires specific recognition by components of the vesicular trafficking machinery. A protein, sorting nexin-1 (SNX1), was identified in a human cell line that bound to a region of the epidermal growth factor receptor (EGFR) containing the lysosomal targeting code. SNX1 contains a region of homology to a yeast vacuolar sorting protein, and overexpression of SNX1 decreased the amount of EGFR on the cell surface as a result of enhanced rates of constitutive and ligand-induced degradation. Thus, SNX1 is likely to play a role in sorting EGFR to lysosomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kurten, R C -- Cadena, D L -- Gill, G N -- CA58689/CA/NCI NIH HHS/ -- F32DK08666/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1996 May 17;272(5264):1008-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of California, San Diego, La Jolla 92093-0650, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638121" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/chemistry/genetics/*metabolism ; Cell Line ; Cell Membrane/*metabolism ; Down-Regulation ; Endocytosis ; Epidermal Growth Factor/pharmacology ; HeLa Cells ; Humans ; Ligands ; Lysosomes/*metabolism ; Molecular Sequence Data ; Molecular Weight ; Receptor, Epidermal Growth Factor/*metabolism ; Transfection ; *Vesicular Transport Proteins
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    The cytolytic P2Z receptor for extracellular ATP identified as a P2X receptor (P2X7) (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-03
    Description: The P2Z receptor is responsible for adenosine triphosphate (ATP)-dependent lysis of macrophages through the formation of membrane pores permeable to large molecules. Other ATP-gated channels, the P2X receptors, are permeable only to small cations. Here, an ATP receptor, the P2X7 receptor, was cloned from rat brain and exhibited both these properties. This protein is homologous to other P2X receptors but has a unique carboxyl-terminal domain that was required for the lytic actions of ATP. Thus, the P2X7 (or P2Z) receptor is a bifunctional molecule that could function in both fast synaptic transmission and the ATP-mediated lysis of antigen-presenting cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Surprenant, A -- Rassendren, F -- Kawashima, E -- North, R A -- Buell, G -- New York, N.Y. -- Science. 1996 May 3;272(5262):735-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Glaxo Institute for Molecular Biology, Geneva, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614837" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/analogs & derivatives/*metabolism/pharmacology ; Amino Acid Sequence ; Animals ; Base Sequence ; Cations, Divalent/pharmacology ; Cell Death ; Cell Line ; Cloning, Molecular ; DNA, Complementary/genetics ; Electric Conductivity ; Humans ; Ion Channels/physiology ; Mice ; Molecular Sequence Data ; Patch-Clamp Techniques ; Rats ; Receptors, Purinergic P2/chemistry/genetics/*physiology ; Receptors, Purinergic P2X7 ; Transfection
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    CNS gene encoding astrotactin, which supports neuronal migration along glial fibers (1996)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1996-04-19
    Description: Vertebrate central nervous system (CNS) histogenesis depends on glia-guided migration of postmitotic neurons to form neuronal laminae. Previous studies have established that the neuronal protein astrotactin functions in murine cerebellar granule cell migration in vitro. The gene encoding astrotactin predicts a protein with three epidermal growth factor repeats and two fibronectin type III repeats. Astrotactin messenger RNA is expressed in postmitotic neuronal precursors in the cerebellum, hippocampus, cerebrum, and olfactory bulb, where migration establishes laminar structures. Fab fragments of antibodies to a recombinant astrotactin peptide blocked migration of cerebellar granule neurons in vitro along astroglial fibers. Transfection of astrotactin complementary DNA into 3T3 cells indicated that astrotactin acts as a ligand for neuron-glia binding during neuronal migration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zheng, C -- Heintz, N -- Hatten, M E -- NS15429/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Apr 19;272(5260):417-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rockefeller University, New York, NY 10021-6399, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8602532" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Amino Acid Sequence ; Animals ; Astrocytes/metabolism ; Blotting, Northern ; Brain/*metabolism ; Cell Movement ; Cerebellum/cytology/metabolism ; Gene Expression ; Glycoproteins/chemistry/*genetics/*physiology ; Hippocampus/metabolism ; Ligands ; Mice ; Molecular Sequence Data ; Nerve Tissue Proteins/chemistry/*genetics/*physiology ; Neuroglia/*metabolism ; Neurons/cytology/*physiology ; Olfactory Bulb/metabolism ; Transfection
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    Platelet-mediated lymphocyte delivery to high endothelial venules (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-12
    Description: Circulating lymphocytes gain access to lymph nodes owing to their ability to initiate rolling along specialized high endothelial venules (HEVs). One mechanism of rolling involves L-selectin binding to peripheral node addressin (PNAd) on HEVs. Activated platelets are shown to bind to circulating lymphocytes and to mediate rolling in HEVs, in vivo, through another molecule, P-selectin, which also interacts with PNAd. In vitro, activated platelets enhanced tethering of lymphocytes to PNAd and sustained lymphocyte rolling, even in the absence of functional L-selectin. Thus, a platelet pathway operating through P-selectin provides a second mechanism for lymphocyte delivery to HEVs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diacovo, T G -- Puri, K D -- Warnock, R A -- Springer, T A -- von Andrian, U H -- HL48675/HL/NHLBI NIH HHS/ -- HL54936/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1996 Jul 12;273(5272):252-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Blood Research, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8662511" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Surface/*metabolism ; Blood Platelets/*physiology ; Cell Adhesion ; Cell Movement ; Endothelium, Vascular/cytology ; Humans ; L-Selectin/physiology ; Ligands ; Lymph Nodes/*blood supply/cytology ; Lymphocytes/cytology/*physiology ; Membrane Glycoproteins/metabolism ; Membrane Proteins ; Mice ; P-Selectin/metabolism ; Platelet Activation ; Receptors, Lymphocyte Homing/metabolism ; Transfection ; Tumor Cells, Cultured ; Venules/cytology
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    Exclusion of Int-6 from PML nuclear bodies by binding to the HTLV-I Tax oncoprotein (1996)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1996-08-16
    Description: The Tax transactivator of the human T cell leukemia virus type I (HTLV-I) exhibits oncogenic properties. A screen for proteins interacting with Tax yielded a complementary DNA (cDNA) encoding the human Int-6 protein. In mice, the Int-6 gene can be converted into a putative dominant negative oncogene after retroviral insertion. Here, Int-6 was localized in the cell nucleus to give a speckled staining pattern superposed to that of the promyelocytic leukemia (PML) protein. The binding of Tax to Int-6 caused its redistribution from the nuclear domains to the cytoplasm. Thus, Int-6 is a component of the PML nuclear bodies and Tax disrupts its normal cellular localization by binding to it.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Desbois, C -- Rousset, R -- Bantignies, F -- Jalinot, P -- New York, N.Y. -- Science. 1996 Aug 16;273(5277):951-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre National de la Recherche Scientifique UMR49, Ecole Normale Superieure de Lyon, 69364 Lyon Cedex 07, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8688078" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cell Nucleus/*chemistry ; Cytoplasm/chemistry ; Eukaryotic Initiation Factor-3 ; Gene Products, tax/analysis/*metabolism ; HeLa Cells ; Humans ; Mice ; *Neoplasm Proteins ; *Nuclear Proteins ; Proto-Oncogene Proteins/analysis/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Transcription Factors/*analysis ; Transfection ; Tumor Suppressor Proteins
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    Prevention of islet allograft rejection with engineered myoblasts expressing FasL in mice (1996)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1996-07-05
    Description: Allogeneic transplantation of islets of Langerhans was facilitated by the cotransplantation of syngeneic myoblasts genetically engineered to express the Fas ligand (FasL). Composite grafting of allogeneic islets with syngeneic myoblasts expressing FasL protected the islet graft from immune rejection and maintained normoglycemia for more than 80 days in mice with streptozotocin-induced diabetes. Graft survival was not prolonged with composite grafts of unmodified myoblasts or Fas-expressing myoblasts. Islet allografts transplanted separately from FasL-expressing myoblasts into the contralateral kidney were rejected, as were similarly transplanted third-party thyroid allografts. Thus, the FasL signal provided site- and immune-specific protection of islet allografts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lau, H T -- Yu, M -- Fontana, A -- Stoeckert, C J Jr -- New York, N.Y. -- Science. 1996 Jul 5;273(5271):109-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatric Surgery, Children's Hospital of Philadelphia, University of Pennsylvania, 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8658177" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Transplantation ; Coculture Techniques ; Diabetes Mellitus, Experimental/surgery ; Fas Ligand Protein ; Genetic Engineering ; Graft Rejection/*prevention & control ; Graft Survival ; *Islets of Langerhans Transplantation ; Ligands ; Membrane Glycoproteins/*biosynthesis ; Mice ; Mice, Inbred A ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Muscle Fibers, Skeletal/*cytology/*metabolism/transplantation ; Recombinant Proteins/biosynthesis ; T-Lymphocytes/cytology/immunology ; Transfection ; Transplantation, Heterotopic ; Transplantation, Homologous
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    Role of Rho in chemoattractant-activated leukocyte adhesion through integrins (1996)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1996-02-16
    Description: Heterotrimeric guanine nucleotide binding protein (G protein)-linked receptors of the chemoattractant subfamily can trigger adhesion through leukocyte integrins, and in this role they are thought to regulate immune cell-cell interactions and trafficking. In lymphoid cells transfected with formyl peptide or interleukin-8 receptors, agonist stimulation activated nucleotide exchange on the small guanosine triphosphate-binding protein RhoA in seconds. Inactivation of Rho by C3 transferase exoenzyme blocked agonist-induced lymphocyte alpha4beta1 adhesion to vascular cell adhesion molecule-1 and neutrophil beta2 integrin adhesion to fibrinogen. These findings suggest that Rho participates in signaling from chemoattractant receptors to trigger rapid adhesion in leukocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laudanna, C -- Campbell, J J -- Butcher, E C -- 1F32 AI08930/AI/NIAID NIH HHS/ -- 5T32 CA09302/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Feb 16;271(5251):981-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8584934" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD/genetics ; B-Lymphocytes/*physiology ; *Cell Adhesion ; Cells, Cultured ; Chemotactic Factors/*pharmacology ; GTP-Binding Proteins/metabolism/*physiology ; Guanosine 5'-O-(3-Thiotriphosphate)/metabolism ; Guanosine Diphosphate/metabolism ; Integrin alpha4beta1 ; Integrins/*physiology ; Interleukin-8/pharmacology ; Mice ; Molecular Sequence Data ; N-Formylmethionine Leucyl-Phenylalanine/pharmacology ; Receptors, Formyl Peptide ; Receptors, Immunologic/genetics ; Receptors, Interleukin/genetics ; Receptors, Interleukin-8A ; Receptors, Lymphocyte Homing/*physiology ; Receptors, Peptide/genetics ; Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Transfection ; Vascular Cell Adhesion Molecule-1/*physiology ; rhoA GTP-Binding Protein
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    In vivo gene delivery and stable transduction of nondividing cells by a lentiviral vector (1996)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1996-04-12
    Description: A retroviral vector system based on the human immunodeficiency virus (HIV) was developed that, in contrast to a murine leukemia virus-based counterpart, transduced heterologous sequences into HeLa cells and rat fibroblasts blocked in the cell cycle, as well as into human primary macrophages. Additionally, the HIV vector could mediate stable in vivo gene transfer into terminally differentiated neurons. The ability of HIV-based viral vectors to deliver genes in vivo into nondividing cells could increase the applicability of retroviral vectors in human gene therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Naldini, L -- Blomer, U -- Gallay, P -- Ory, D -- Mulligan, R -- Gage, F H -- Verma, I M -- Trono, D -- AG08514/AG/NIA NIH HHS/ -- AG10435/AG/NIA NIH HHS/ -- AI37510/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1996 Apr 12;272(5259):263-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Salk Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8602510" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Brain/cytology/virology ; Cell Division ; Cells, Cultured ; Female ; *Gene Transfer Techniques ; Genetic Therapy ; *Genetic Vectors ; HIV/*genetics/physiology ; HeLa Cells ; Humans ; Macrophages/cytology/virology ; Molecular Sequence Data ; Neurons/cytology/virology ; Plasmids ; Rats ; Transfection ; Virus Integration
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    TAB1: an activator of the TAK1 MAPKKK in TGF-beta signal transduction (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-24
    Description: Transforming growth factor-beta (TGF-beta) regulates many aspects of cellular function. A member of the mitogen-activated protein kinase kinase kinase (MAPKKK) family, TAK1, was previously identified as a mediator in the signaling pathway of TGF-beta superfamily members. The yeast two-hybrid system has now revealed two human proteins, termed TAB1 and TAB2 (for TAK1 binding protein), that interact with TAK1. TAB1 and TAK1 were co-immunoprecipitated from mammalian cells. Overproduction of TAB1 enhanced activity of the plasminogen activator inhibitor 1 gene promoter, which is regulated by TGF-beta, and increased the kinase activity of TAK1. TAB1 may function as an activator of the TAK1 MAPKKK in TGF-beta signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shibuya, H -- Yamaguchi, K -- Shirakabe, K -- Tonegawa, A -- Gotoh, Y -- Ueno, N -- Irie, K -- Nishida, E -- Matsumoto, K -- New York, N.Y. -- Science. 1996 May 24;272(5265):1179-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638164" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/chemistry/*metabolism ; Cell Line ; Cloning, Molecular ; Enzyme Activation ; Genes, Reporter ; Humans ; *Intracellular Signaling Peptides and Proteins ; *MAP Kinase Kinase Kinases ; Mice ; Molecular Sequence Data ; Plasminogen Activator Inhibitor 1/genetics ; Promoter Regions, Genetic ; Protein-Serine-Threonine Kinases/*metabolism ; Recombinant Fusion Proteins/metabolism ; Saccharomyces cerevisiae/genetics/metabolism ; *Signal Transduction ; Transfection ; Transformation, Genetic ; Transforming Growth Factor beta/*metabolism
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    Receptor-ligand interaction between CD44 and osteopontin (Eta-1) (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-01-26
    Description: The CD44 family of surface receptors regulates adhesion, movement, and activation of normal and neoplastic cells. The cytokine osteopontin (Eta-1), which regulates similar cellular functions, was found to be a protein ligand of CD44. Osteopontin induces cellular chemotaxis but not homotypic aggregation, whereas the inverse is true for the interaction between CD44 and a carbohydrate ligand, hyaluronate. The different responses of cells after CD44 ligation by either osteopontin or hyaluronate may account for the independent effects of CD44 on cell migration and growth. This mechanism may also be exploited by tumor cells to promote metastasis formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weber, G F -- Ashkar, S -- Glimcher, M J -- Cantor, H -- AI12184/AI/NIAID NIH HHS/ -- AI13600/AI/NIAID NIH HHS/ -- P01 AR34078/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Jan 26;271(5248):509-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute, Department of Pathology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8560266" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD44/*metabolism ; Base Sequence ; *Cell Adhesion ; Cell Aggregation ; Cell Line ; *Chemotaxis ; Cytokines/*metabolism/pharmacology ; Hyaluronic Acid/metabolism/pharmacology ; Ligands ; Mice ; Molecular Sequence Data ; Monocytes/metabolism ; Oligopeptides/pharmacology ; Osteopontin ; Sialoglycoproteins/*metabolism/pharmacology ; Transfection ; Tumor Cells, Cultured
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    Enhancement of class II-restricted T cell responses by costimulatory NK receptors for class I MHC proteins (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: An important feature of the human immune system is the ability of T cells to respond to small quantities of antigen. Class II major histocompatibility complex (MHC)-restricted T cells that expressed a costimulatory natural killer (NK) cell receptor for class I MHC proteins were cloned. In the presence of low doses of superantigen, the proliferative response of these T cell clones was three- to ninefold greater when the T cells were costimulated by way of the NK receptor. Thus, the action of costimulatory NK receptors on T cells may play a significant role in initiating and sustaining immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mandelboim, O -- Davis, D M -- Reyburn, H T -- Vales-Gomez, M -- Sheu, E G -- Pazmany, L -- Strominger, J L -- CA 47554/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2097-100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA. jlstrom@fas.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953044" target="_blank"〉PubMed〈/a〉
    Keywords: B-Lymphocytes/immunology ; Cell Line ; Clone Cells ; HLA Antigens/immunology ; HLA-C Antigens/immunology ; HLA-G Antigens ; Histocompatibility Antigens Class I/*immunology ; Histocompatibility Antigens Class II/*immunology ; Humans ; *Lymphocyte Activation ; Receptors, Immunologic/*immunology ; Superantigens/immunology ; T-Lymphocytes/*immunology ; Transfection
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    A role for CD81 in early T cell development (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-01-12
    Description: Early stages of T cell development are thought to include a series of coordinated interactions between thymocytes and other cells of the thymus. A monoclonal antibody specific for mouse CD81 was identified that blocked the appearance of alpha beta but not gamma delta T cells in fetal organ cultures initiated with day 14.5 thymus lobes. In reaggregation cultures with CD81-transfected fibroblasts, CD4-CD8- thymocytes differentiated into CD4+CD8+ T cells. Thus, interactions between immature thymocytes and stromal cells expressing CD81 are required and may be sufficient to induce early events associated with T cell development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boismenu, R -- Rhein, M -- Fischer, W H -- Havran, W L -- AI32751/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1996 Jan 12;271(5246):198-200.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, 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/8539618" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Monoclonal/immunology ; Antigens, CD/genetics/immunology/*physiology ; Antigens, CD4/analysis ; Antigens, CD8/analysis ; Antigens, CD81 ; Base Sequence ; CHO Cells ; Cell Differentiation ; Cricetinae ; Membrane Proteins/immunology/*physiology ; Mice ; Molecular Sequence Data ; Organ Culture Techniques ; Receptors, Antigen, T-Cell, alpha-beta/*analysis ; Receptors, Antigen, T-Cell, gamma-delta/analysis ; Stromal Cells/immunology ; T-Lymphocyte Subsets/cytology/*immunology ; Thymus Gland/cytology/*immunology ; Transfection
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    Tat-SF1: cofactor for stimulation of transcriptional elongation by HIV-1 Tat (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-10-25
    Description: Tat may stimulate transcriptional elongation by recruitment of a complex containing Tat-SF1 and a kinase to the human immunodeficiency virus-type 1 (HIV-1) promoter through a Tat-TAR interaction. A complementary DNA for the cellular activity, Tat-SF1, has been isolated. This factor is required for Tat trans-activation and is a substrate of an associated cellular kinase. Cotransfection with the complementary DNA for Tat-SF1 specifically modulates Tat activation. Tat-SF1 contains two RNA recognition motifs and a highly acidic carboxyl-terminal half. It is distantly related to EWS and FUS/TLS, members of a family of putative transcription factors with RNA recognition motifs that are associated with sarcomas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, Q -- Sharp, P A -- AI32486/AI/NIAID NIH HHS/ -- CA14051/CA/NCI NIH HHS/ -- GM34277/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Oct 25;274(5287):605-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Cancer Research and Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8849451" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; DNA, Complementary/genetics ; Electrophoresis, Polyacrylamide Gel ; Gene Expression ; Gene Products, tat/*genetics ; HIV Long Terminal Repeat ; HIV-1/*genetics ; HeLa Cells ; Heterogeneous-Nuclear Ribonucleoproteins ; Humans ; Immunoblotting ; Molecular Sequence Data ; Molecular Weight ; Neoplasm Proteins/chemistry ; Phosphorylation ; Promoter Regions, Genetic ; Protein Kinases/metabolism ; RNA, Viral/metabolism ; RNA-Binding Protein EWS ; RNA-Binding Protein FUS ; Ribonucleoproteins/chemistry ; Sequence Homology, Amino Acid ; Trans-Activators/chemistry/*genetics/metabolism ; *Transcriptional Activation ; Transfection ; tat Gene Products, Human Immunodeficiency Virus
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    Multiple extracellular elements of CCR5 and HIV-1 entry: dissociation from response to chemokines (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-13
    Description: The human beta-chemokine receptor CCR5 is an important cofactor for entry of human immunodeficiency virus-type 1 (HIV-1). The murine form of CCR5, despite its 82 percent identity to the human form, was not functional as an HIV-1 coreceptor. HIV-1 entry function could be reconstituted by fusion of various individual elements derived from the extracellular region of human CCR5 onto murine CCR5. Analysis of chimeras containing elements from human CCR5 and human CCR2B suggested that a complex structure rather than single contact sites is responsible for facilitation of viral entry. Further, certain chimeras lacking the domains necessary to signal in response to their natural chemokine ligands retained vigorous HIV-1 coreceptor activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Atchison, R E -- Gosling, J -- Monteclaro, F S -- Franci, C -- Digilio, L -- Charo, I F -- Goldsmith, M A -- HL52773/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 13;274(5294):1924-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gladstone Institute of Virology and Immunology, School of Medicine, University of California, San Francisco, Post Office Box 419100, San Francisco, CA 94141-9100, USA. mark_goldsmith@quickmail.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8943208" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD4/metabolism ; COS Cells ; HIV-1/*metabolism ; Humans ; Inositol Phosphates/metabolism ; Ligands ; Mice ; Receptors, CCR2 ; Receptors, CCR5 ; *Receptors, Chemokine ; Receptors, Cytokine/chemistry/genetics/*metabolism ; Receptors, HIV/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transfection
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    Modification of phytohormone response by a peptide encoded by ENOD40 of legumes and a nonlegume (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-19
    Description: The gene ENOD40 is expressed during early stages of legume nodule development. A homolog was isolated from tobacco, which, as does ENOD40 from legumes, encodes an oligopeptide of about 10 amino acids. In tobacco protoplasts, these peptides change the response to auxin at concentrations as low as 10(-12) to 10(-16)M. The peptides encoded by ENOD40 appear to act as plant growth regulators.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van de Sande, K -- Pawlowski, K -- Czaja, I -- Wieneke, U -- Schell, J -- Schmidt, J -- Walden, R -- Matvienko, M -- Wellink, J -- van Kammen, A -- Franssen, H -- Bisseling, T -- New York, N.Y. -- Science. 1996 Jul 19;273(5273):370-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Planck-Institut fur Zuchtungsforschung, Koln, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8662527" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Division ; Fabaceae/chemistry/*genetics/growth & development ; *Genes, Plant ; Green Fluorescent Proteins ; Indoleacetic Acids/*pharmacology ; Luminescent Proteins/biosynthesis ; Molecular Sequence Data ; Naphthaleneacetic Acids/pharmacology ; Open Reading Frames ; Plant Growth Regulators ; Plant Proteins/biosynthesis/*genetics/*physiology ; Plant Roots/growth & development/metabolism ; *Plants, Medicinal ; *Plants, Toxic ; Protoplasts/cytology ; RNA, Long Noncoding ; RNA, Untranslated/*physiology ; Recombinant Fusion Proteins ; Tobacco/chemistry/*genetics/growth & development ; Transfection
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    Adenosine diphosphate as an intracellular regulator of insulin secretion (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-06-21
    Description: Adenosine triphosphate (ATP)-sensitive potassium (KATP) channels couple the cellular metabolic state to electrical activity and are a critical link between blood glucose concentration and pancreatic insulin secretion. A mutation in the second nucleotide-binding fold (NBF2) of the sulfonylurea receptor (SUR) of an individual diagnosed with persistent hyperinsulinemic hypoglycemia of infancy generated KATP channels that could be opened by diazoxide but not in response to metabolic inhibition. The hamster SUR, containing the analogous mutation, had normal ATP sensitivity, but unlike wild-type channels, inhibition by ATP was not antagonized by adenosine diphosphate (ADP). Additional mutations in NBF2 resulted in the same phenotype, whereas an equivalent mutation in NBF1 showed normal sensitivity to MgADP. Thus, by binding to SUR NBF2 and antagonizing ATP inhibition of KATP++ channels, intracellular MgADP may regulate insulin secretion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nichols, C G -- Shyng, S L -- Nestorowicz, A -- Glaser, B -- Clement, J P 4th -- Gonzalez, G -- Aguilar-Bryan, L -- Permutt, M A -- Bryan, J -- New York, N.Y. -- Science. 1996 Jun 21;272(5269):1785-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Washington University School of Medicine, St. Louis, Missouri 63110, USA. cnichols@cellbio.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650576" target="_blank"〉PubMed〈/a〉
    Keywords: *ATP-Binding Cassette Transporters ; Adenosine Diphosphate/*metabolism/pharmacology ; Adenosine Triphosphate/*metabolism/pharmacology ; Amino Acid Sequence ; Animals ; Cell Line, Transformed ; Cercopithecus aethiops ; Cricetinae ; Diazoxide/pharmacology ; Humans ; Hyperinsulinism/genetics ; Hypoglycemia/genetics ; Insulin/*secretion ; Islets of Langerhans/metabolism ; Molecular Sequence Data ; Patch-Clamp Techniques ; Point Mutation ; Potassium Channels/drug effects/genetics/*metabolism ; *Potassium Channels, Inwardly Rectifying ; Receptors, Drug/drug effects/genetics/*metabolism ; Rubidium/metabolism ; Sulfonylurea Receptors ; Transfection
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    Muscling transplants into mice (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1996 Jul 5;273(5271):33.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8658188" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Transplantation ; Diabetes Mellitus, Experimental/*surgery ; Fas Ligand Protein ; Genetic Engineering ; Graft Rejection/*prevention & control ; Graft Survival ; *Islets of Langerhans Transplantation ; Membrane Glycoproteins/*biosynthesis ; Mice ; Muscle Fibers, Skeletal/*cytology/*metabolism/transplantation ; Recombinant Proteins/biosynthesis ; T-Lymphocytes/cytology ; Transfection ; Transplantation, Heterotopic
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    Ca2+-dependent protein kinases and stress signal transduction in plants (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-13
    Description: Stress responses in plants involve changes in the transcription of specific genes. The constitutively active mutants of two related Ca2+-dependent protein kinases (CDPK1 and CDPK1a) activate a stress-inducible promoter, bypassing stress signals. Six other plant protein kinases, including two distinct CDPKs, fail to mimic this stress signaling. The activation is abolished by a CDPK1 mutation in the kinase domain and diminished by a constitutively active protein phosphatase 2C that is capable of blocking responses to the stress hormone abscisic acid. A variety of functions are mediated by different CDPKs. CDPK1 and CDPK1a may be positive regulators controlling stress signal transduction in plants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sheen, J -- New York, N.Y. -- Science. 1996 Dec 13;274(5294):1900-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, MA 02114, USA. sheen@frodo.mgh.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8943201" target="_blank"〉PubMed〈/a〉
    Keywords: Abscisic Acid/pharmacology ; Amino Acid Sequence ; Arabidopsis/enzymology/genetics ; *Arabidopsis Proteins ; Calcium/metabolism ; Calcium-Binding Proteins/genetics/*metabolism ; DNA, Complementary/genetics ; Gene Expression Regulation, Plant ; Genes, Reporter ; Green Fluorescent Proteins ; Luminescent Proteins/genetics ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Phosphoprotein Phosphatases/metabolism ; Plant Leaves/metabolism ; Plant Proteins/*genetics ; *Promoter Regions, Genetic ; Protein Kinases/genetics/*metabolism ; Protein Phosphatase 2 ; Protoplasts/metabolism ; *Saccharomyces cerevisiae Proteins ; *Signal Transduction ; Transfection ; Zea mays/genetics/*metabolism
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    Role of beta-arrestin in mediating agonist-promoted G protein-coupled receptor internalization (1996)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1996-01-19
    Description: beta-Arrestins are proteins that bind phosphorylated heterotrimeric GTP-binding protein (G protein)-coupled receptors (GPCRs) and contribute to the desensitization of GPCRs by uncoupling the signal transduction process. Resensitization of GPCR responsiveness involves agonist-mediated receptor sequestration. Overexpression of beta-arrestins in human embryonic kidney cells rescued the sequestration of beta 2-adrenergic receptor (beta 2AR) mutants defective in their ability to sequester, an effect enhanced by simultaneous overexpression of beta-adrenergic receptor kinase 1. Wild-type beta 2AR sequestration was inhibited by the overexpression of two beta-arrestin mutants. These findings suggest that beta-arrestins play an integral role in GPCR internalization and thus serve a dual role in the regulation of GPCR function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferguson, S S -- Downey, W E 3rd -- Colapietro, A M -- Barak, L S -- Menard, L -- Caron, M G -- NS 19576/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Jan 19;271(5247):363-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute Laboratory, Duke University Medical Center, Durham, NC 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8553074" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic beta-Agonists/*pharmacology ; Antigens/genetics/*physiology ; *Arrestins ; Cell Line ; Cyclic AMP-Dependent Protein Kinases/genetics/*metabolism ; DNA, Complementary ; Eye Proteins/genetics/*physiology ; GTP-Binding Proteins/*metabolism ; Humans ; Isoproterenol/pharmacology ; Mutation ; Phosphorylation ; Point Mutation ; Receptors, Adrenergic, beta-2/genetics/*metabolism ; Transfection ; beta-Adrenergic Receptor Kinases
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    A cellular homolog of hepatitis delta antigen: implications for viral replication and evolution (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-10-04
    Description: Hepatitis delta virus (HDV) is a pathogenic human virus whose RNA genome and replication cycle resemble those of plant viroids. However, viroid genomes contain no open reading frames, whereas HDV RNA encodes a single protein, hepatitis delta antigen (HDAg), which is required for viral replication. A cellular gene whose product interacts with HDAg has now been identified, and this interaction was found to affect viral genomic replication in intact cells. DNA sequence analysis revealed that this protein, termed delta-interacting protein A (DIPA), is a cellular homolog of HDAg. These observations demonstrate that a host gene product can modulate HDV replication and suggest that HDV may have evolved from a primitive viroidlike RNA through capture of a cellular transcript.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brazas, R -- Ganem, D -- New York, N.Y. -- Science. 1996 Oct 4;274(5284):90-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, University of California, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8810253" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; *Biological Evolution ; Carrier Proteins/*chemistry/genetics/metabolism ; Cell Line ; Cloning, Molecular ; Genome, Viral ; Hepatitis Antigens/*chemistry/genetics/*metabolism ; Hepatitis Delta Virus/*genetics/physiology ; Hepatitis delta Antigens ; Humans ; Liver/chemistry ; Molecular Sequence Data ; RNA, Messenger/genetics ; RNA, Viral/genetics ; Repressor Proteins ; Sequence Alignment ; Transfection ; Tumor Cells, Cultured ; Viroids/genetics ; Virus Replication
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    Protection from natural killer cell-mediated lysis by HLA-G expression on target cells (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-01
    Description: The outermost layer of the human placenta is devoid of classical class I human leukocyte antigens (HLA-A, HLA-B, and HLA-C) and class II proteins (HLA-DR, HLA-DQ, and HLA-DP). Although this prevents recognition by maternal T lymphocytes, the lack of class I molecules leaves these cells susceptible to attack by natural killer (NK) cells. However, trophoblast cells directly in contact with the maternal tissues express the class I molecule HLA-G, which may be involved in protecting the trophoblast from recognition by NK cells. Here evidence is provided that expression of HLA-G is sufficient to protect otherwise susceptible target cells from lysis by activated NK1 and NK2 cell lines and clones that are specific for distinct groups of HLA-C alleles. The receptors on NK cells that recognize HLA-G are also identified.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pazmany, L -- Mandelboim, O -- Vales-Gomez, M -- Davis, D M -- Reyburn, H T -- Strominger, J L -- CA-47554/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Nov 1;274(5288):792-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, 7 Divinity Avenue, Cambridge, Massachusetts 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8864122" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, CD56/analysis ; Cell Line ; Clone Cells ; *Cytotoxicity, Immunologic ; HLA Antigens/genetics/*physiology ; HLA-C Antigens/genetics/physiology ; HLA-G Antigens ; Histocompatibility Antigens Class I/genetics/*physiology ; Humans ; Killer Cells, Natural/*immunology ; Receptors, Immunologic/physiology ; Receptors, KIR ; Transfection ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 62
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    Regulation of integrin function by the urokinase receptor (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-09-13
    Description: Integrin function is central to inflammation, immunity, and tumor progression. The urokinase-type plasminogen activator receptor (uPAR) and integrins formed stable complexes that both inhibited native integrin adhesive function and promoted adhesion to vitronectin via a ligand binding site on uPAR. Interaction of soluble uPAR with the active conformer of integrins mimicked the inhibitory effects of membrane uPAR. Both uPAR-mediated adhesion and altered integrin function were blocked by a peptide that bound to uPAR and disrupted complexes. These data provide a paradigm for regulation of integrins in which a nonintegrin membrane receptor interacts with and modifies the function of activated integrins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wei, Y -- Lukashev, M -- Simon, D I -- Bodary, S C -- Rosenberg, S -- Doyle, M V -- Chapman, H A -- HD 26732/HD/NICHD NIH HHS/ -- HL 02768/HL/NHLBI NIH HHS/ -- HL44712/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1996 Sep 13;273(5281):1551-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703217" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, CD18/metabolism ; Antigens, CD29/metabolism ; *Cell Adhesion ; Cell Line ; Fibronectins/metabolism ; Glycosylphosphatidylinositols/metabolism ; Humans ; Integrins/metabolism/*physiology ; Ligands ; Molecular Sequence Data ; Receptors, Cell Surface/*metabolism ; Receptors, Cytoadhesin/*metabolism ; Receptors, Urokinase Plasminogen Activator ; Recombinant Fusion Proteins/metabolism ; Transfection ; Urokinase-Type Plasminogen Activator/metabolism ; Vitronectin/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 63
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    Participation of presenilin 2 in apoptosis: enhanced basal activity conferred by an Alzheimer mutation (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-06
    Description: Overexpression of the familial Alzheimer's disease gene Presenilin 2 (PS2) in nerve growth factor-differentiated PC12 cells increased apoptosis induced by trophic factor withdrawal or beta-amyloid. Transfection of antisense PS2 conferred protection against apoptosis induced by trophic withdrawal in nerve growth factor-differentiated or amyloid precursor protein-expressing PC12 cells. The apoptotic cell death induced by PS2 protein was sensitive to pertussis toxin, suggesting that heterotrimeric GTP-binding proteins are involved. A PS2 mutation associated with familial Alzheimer's disease was found to generate a molecule with enhanced basal apoptotic activity. This gain of function might accelerate the process of neurodegeneration that occurs in Alzheimer's disease, leading to the earlier age of onset characteristic of familial Alzheimer's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolozin, B -- Iwasaki, K -- Vito, P -- Ganjei, J K -- Lacana, E -- Sunderland, T -- Zhao, B -- Kusiak, J W -- Wasco, W -- D'Adamio, L -- New York, N.Y. -- Science. 1996 Dec 6;274(5293):1710-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unit on Alzheimer Biology, Laboratory of Clinical Science, National Institute of Mental Health, Building 10, Room 3D41, 9000 Rockville Pike, Bethesda, MD 20892, USA. ldadamio@atlas.niaid.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8939861" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics ; Amyloid beta-Peptides/pharmacology ; Amyloid beta-Protein Precursor/metabolism/pharmacology ; Animals ; *Apoptosis ; DNA, Antisense/genetics ; GTP-Binding Protein alpha Subunits, Gi-Go/physiology ; GTP-Binding Protein alpha Subunits, Gs/physiology ; Humans ; Membrane Proteins/*genetics/*physiology ; Mutation ; Nerve Growth Factors/pharmacology ; Neurons/*cytology ; PC12 Cells ; Peptide Fragments/pharmacology ; Pertussis Toxin ; Presenilin-2 ; Rats ; Transfection ; Virulence Factors, Bordetella/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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