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  • 1
    Publication Date: 1995-11-03
    Description: A heptadecapeptide was identified and purified from porcine brain tissue as a ligand for an orphan heterotrimeric GTP-binding protein (G protein)-coupled receptor (LC132) that is similar in sequence to opioid receptors. This peptide, orphanin FQ, has a primary structure reminiscent of that of opioid peptides. Nanomolar concentrations of orphanin FQ inhibited forskolin-stimulated adenylyl cyclase activity in cells transfected with LC132. This inhibitory activity was not affected by the addition of opioid ligands, nor did the peptide activate opioid receptors. Orphanin FQ bound to its receptor in a saturable manner and with high affinity. When injected intracerebroventricularly into mice, orphanin FQ caused a decrease in locomotor activity but did not induce analgesia in the hot-plate test. However, the peptide produced hyperalgesia in the tail-flick assay. Thus, orphanin FQ may act as a transmitter in the brain by modulating nociceptive and locomotor behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reinscheid, R K -- Nothacker, H P -- Bourson, A -- Ardati, A -- Henningsen, R A -- Bunzow, J R -- Grandy, D K -- Langen, H -- Monsma, F J Jr -- Civelli, O -- DA 08562/DA/NIDA NIH HHS/ -- DA 09620/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1995 Nov 3;270(5237):792-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pharma Division, Hoffmann-La Roche AG, Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481766" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclase Inhibitors ; Amino Acid Sequence ; Analgesics/pharmacology ; Animals ; CHO Cells ; Colforsin/pharmacology ; Cricetinae ; GTP-Binding Proteins/*metabolism ; Hypothalamus/chemistry ; Injections, Intraventricular ; Injections, Spinal ; Ligands ; Mice ; Molecular Sequence Data ; Motor Activity/drug effects ; Opioid Peptides/chemistry/*isolation & purification/*metabolism/pharmacology ; Pain Measurement ; Receptors, Neuropeptide/*metabolism ; Receptors, Opioid/*metabolism ; Swine ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 1995-07-14
    Description: CD1 molecules are distantly related to the major histocompatibility complex (MHC) class I proteins. They are of unknown function. Screening random peptide phage display libraries with soluble empty mouse CD1 (mCD1) identified a peptide binding motif. It consists of three anchor positions occupied by aromatic or bulky hydrophobic amino acids. Equilibrium binding studies demonstrated that mCD1 binds peptides containing the appropriate motif with relatively high affinity. However, in contrast to classical MHC class I molecules, strong binding to mCD1 required relatively long peptides. Peptide-specific, mCD1-restricted T cell responses can be raised, which suggests that the findings are of immunological significance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castano, A R -- Tangri, S -- Miller, J E -- Holcombe, H R -- Jackson, M R -- Huse, W D -- Kronenberg, M -- Peterson, P A -- New York, N.Y. -- Science. 1995 Jul 14;269(5221):223-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7542403" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Antigen Presentation ; Antigens, CD/chemistry/*immunology/metabolism ; Antigens, CD1 ; Cell Line ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Peptides/chemistry/*immunology/metabolism ; T-Lymphocytes, Cytotoxic/*immunology ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1995-09-01
    Description: Eukaryotic chromosomes are capped with repetitive telomere sequences that protect the ends from damage and rearrangements. Telomere repeats are synthesized by telomerase, a ribonucleic acid (RNA)-protein complex. Here, the cloning of the RNA component of human telomerase, termed hTR, is described. The template region of hTR encompasses 11 nucleotides (5'-CUAACCCUAAC) complementary to the human telomere sequence (TTAGGG)n. Germline tissues and tumor cell lines expressed more hTR than normal somatic cells and tissues, which have no detectable telomerase activity. Human cell lines that expressed hTR mutated in the template region generated the predicted mutant telomerase activity. HeLa cells transfected with an antisense hTR lost telomeric DNA and began to die after 23 to 26 doublings. Thus, human telomerase is a critical enzyme for the long-term proliferation of immortal tumor cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feng, J -- Funk, W D -- Wang, S S -- Weinrich, S L -- Avilion, A A -- Chiu, C P -- Adams, R R -- Chang, E -- Allsopp, R C -- Yu, J -- AG09383/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1995 Sep 1;269(5228):1236-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geron Corporation, Menlo Park, CA 94025, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7544491" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Death ; *Cell Division ; Cell Line ; Cloning, Molecular ; DNA Nucleotidylexotransferase/antagonists & ; inhibitors/chemistry/genetics/*metabolism ; HeLa Cells ; Humans ; Molecular Sequence Data ; Oligonucleotides, Antisense/pharmacology ; Polymerase Chain Reaction ; RNA/chemistry/genetics/*metabolism ; Templates, Genetic ; 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
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-04-28
    Description: Epstein-Barr virus (EBV) nuclear antigen 2 (EBNA2) is a transcriptional activator that is essential for EBV-driven B cell immortalization. EBNA2 is targeted to responsive promoters through interaction with a cellular DNA binding protein, C promoter binding factor 1 (CBF1). A transcriptional repression domain has been identified within CBF1. This domain also interacts with EBNA2, and repression is masked by EBNA2 binding. Thus, EBNA2 acts by countering transcriptional repression. Mutation at amino acid 233 of CBF1 abolishes repression and correlates with a loss-of-function mutation in the Drosophila homolog Su(H).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hsieh, J J -- Hayward, S D -- CA42245/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Apr 28;268(5210):560-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Molecular Sciences, 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/7725102" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, Viral/chemistry/*metabolism ; DNA-Binding Proteins/chemistry/*metabolism ; Epstein-Barr Virus Nuclear Antigens ; *Gene Expression Regulation ; HeLa Cells ; Humans ; Immunoglobulin J Recombination Signal Sequence-Binding Protein ; Models, Genetic ; Mutation ; *Nuclear Proteins ; Promoter Regions, Genetic ; Trans-Activators/chemistry/*metabolism ; *Transcription, Genetic ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-09-08
    Description: TNF receptor-associated factor (TRAF) proteins are candidate signal transducers that associate with the cytoplasmic domains of members of the tumor necrosis factor (TNF) receptor superfamily. The role of TRAFs in the TNF-R2 and CD40 signal transduction pathways, which result in the activation of transcription factor NF-kappa B, was investigated. Overexpression of TRAF2, but not TRAF1 or TRAF3, was sufficient to induce NF-kappa B activation. A truncated derivative of TRAF2 lacking an amino-terminal RING finger domain was a dominant-negative inhibitor of NF-kappa B activation mediated by TNF-R2 and CD40. Thus, TRAF2 is a common mediator of TNF-R2 and CD40 signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rothe, M -- Sarma, V -- Dixit, V M -- Goeddel, D V -- CA64803/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 Sep 8;269(5229):1424-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biology Department, Tularik, Inc., South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7544915" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/*metabolism ; Antigens, CD40 ; Antigens, Differentiation, B-Lymphocyte/*metabolism ; Cell Line ; Gene Expression Regulation ; Genes, Reporter ; Mice ; NF-kappa B/*metabolism ; Proteins/*metabolism ; Receptors, Tumor Necrosis Factor/*metabolism ; Receptors, Tumor Necrosis Factor, Type I ; Receptors, Tumor Necrosis Factor, Type II ; *Signal Transduction ; T-Lymphocytes/metabolism ; TNF Receptor-Associated Factor 2 ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 1995-08-11
    Description: Cystic fibrosis transmembrane regulator (CFTR), the gene product that is mutated in cystic fibrosis (CF) patients, has a well-recognized function as a cyclic adenosine 3',5'-monophosphate (cAMP)-regulated chloride channel, but this property does not account for the abnormally high basal rate and cAMP sensitivity of sodium ion absorption in CF airway epithelia. Expression of complementary DNAs for rat epithelial Na+ channel (rENaC) alone in Madin Darby canine kidney (MDCK) epithelial cells generated large amiloride-sensitive sodium currents that were stimulated by cAMP, whereas coexpression of human CFTR with rENaC generated smaller basal sodium currents that were inhibited by cAMP. Parallel studies that measured regulation of sodium permeability in fibroblasts showed similar results. In CF airway epithelia, the absence of this second function of CFTR as a cAMP-dependent regulator likely accounts for abnormal sodium transport.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stutts, M J -- Canessa, C M -- Olsen, J C -- Hamrick, M -- Cohn, J A -- Rossier, B C -- Boucher, R C -- CFF R026/PHS HHS/ -- HL 34322/HL/NHLBI NIH HHS/ -- HL 42384/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1995 Aug 11;269(5225):847-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cystic Fibrosis/Pulmonary Research and Treatment Center, University of North Carolina at Chapel Hill 27599-7020, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7543698" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Absorption ; Amiloride/pharmacology ; Animals ; Cell Line ; Cell Membrane Permeability ; Chloride Channels/metabolism ; Cyclic AMP/*metabolism ; Cystic Fibrosis/*metabolism ; Cystic Fibrosis Transmembrane Conductance Regulator ; DNA, Complementary ; Dogs ; Humans ; Membrane Proteins/*metabolism ; Mice ; Patch-Clamp Techniques ; Rats ; Sodium/metabolism ; Sodium Channels/*metabolism ; Transfection
    Print ISSN: 0036-8075
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  • 7
    Publication Date: 1995-06-23
    Description: A transcriptional transactivator was developed that fuses the VP16 activation domain with a mutant Tet repressor from Escherichia coli. This transactivator requires certain tetracycline (Tc) derivatives for specific DNA binding. Thus, addition of doxycycline to HeLa cells that constitutively synthesized the transactivator and that contained an appropriate, stably integrated reporter unit rapidly induced gene expression more than a thousandfold. The specificity of the Tet repressor-operator-effector interaction and the pharmacological characteristics of Tc's make this regulatory system well suited for the control of gene activities in vivo, such as in transgenic animals and possibly in gene therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gossen, M -- Freundlieb, S -- Bender, G -- Muller, G -- Hillen, W -- Bujard, H -- New York, N.Y. -- Science. 1995 Jun 23;268(5218):1766-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Zentrum fur Molekulare Biologie der Universitat Heidelberg, (ZMDH), Im Neuenheimer Feld 282, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7792603" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Doxycycline/*pharmacology ; Genes, Reporter ; HeLa Cells ; Humans ; Molecular Sequence Data ; Operator Regions, Genetic ; Recombinant Fusion Proteins/genetics ; Repressor Proteins/chemistry/*genetics ; Simplexvirus ; Trans-Activators/*genetics ; Transcriptional Activation/*drug effects ; Transfection ; Viral Proteins/genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 1995-05-12
    Description: A gene from human chromosome 11p11.2 was isolated and was shown to suppress metastasis when introduced into rat AT6.1 prostate cancer cells. Expression of this gene, designated KAI1, was reduced in human cell lines derived from metastatic prostate tumors. KAI1 specifies a protein of 267 amino acids, with four hydrophobic and presumably transmembrane domains and one large extracellular hydrophilic domain with three potential N-glycosylation sites. KAI1 is evolutionarily conserved, is expressed in many human tissues, and encodes a member of a structurally distinct family of leukocyte surface glycoproteins. Decreased expression of this gene may be involved in the malignant progression of prostate and other cancers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dong, J T -- Lamb, P W -- Rinker-Schaeffer, C W -- Vukanovic, J -- Ichikawa, T -- Isaacs, J T -- Barrett, J C -- CA 58236/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1995 May 12;268(5212):884-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Carcinogenesis, National Institute of Environmental Health Sciences, National Institute of Health, Research Triangle Park, NC 27709, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7754374" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD/chemistry/*genetics/physiology ; Antigens, CD82 ; Base Sequence ; Biological Evolution ; *Chromosomes, Human, Pair 11 ; Gene Expression ; *Genes, Tumor Suppressor ; Humans ; Male ; Membrane Glycoproteins/chemistry/*genetics/physiology ; Mice ; Mice, SCID ; Molecular Sequence Data ; Neoplasm Metastasis/*genetics ; Prostatic Neoplasms/*genetics/pathology ; *Proto-Oncogene Proteins ; Rats ; Transfection ; 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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  • 9
    Publication Date: 1995-02-17
    Description: Although the myogenic regulator MyoD is expressed in proliferating myoblasts, differentiation of these cells is limited to the G0 phase of the cell cycle. Forced expression of cyclin D1, but not cyclins A, B, or E, inhibited the ability of MyoD to transactivate muscle-specific genes and correlated with phosphorylation of MyoD. Transfection of myoblasts with cyclin-dependent kinase (Cdk) inhibitors p21 and p16 augmented muscle-specific gene expression in cells maintained in high concentrations of serum, suggesting that an active cyclin-Cdk complex suppresses MyoD function in proliferating cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Skapek, S X -- Rhee, J -- Spicer, D B -- Lassar, A B -- 1F32AR08214-01A1/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1995 Feb 17;267(5200):1022-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7863328" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/biosynthesis/physiology ; Cell Cycle ; Cell Differentiation ; Cell Line ; Cyclin D1 ; Cyclin-Dependent Kinase Inhibitor p16 ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclin-Dependent Kinases/*metabolism ; Cyclins/biosynthesis/*physiology ; Enzyme Activation ; Mice ; Muscle, Skeletal/*cytology/metabolism ; MyoD Protein/*antagonists & inhibitors/metabolism ; Oncogene Proteins/*physiology ; Phosphorylation ; Transcriptional Activation ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-03-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duesberg, P H -- New York, N.Y. -- Science. 1995 Mar 10;267(5203):1407-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7794335" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Cell Transformation, Neoplastic/*genetics ; *Genes, ras ; Humans ; Mice ; Neoplasms/*genetics ; *Oncogenes ; Point Mutation ; Promoter Regions, Genetic ; Transfection
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