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  • Animals  (1,937)
  • 1985-1989  (1,937)
  • 1
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    Immunodeficiency and clonal growth of target cells induced by helper-free defective retrovirus (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: The murine acquired immunodeficiency syndrome is induced by a defective retrovirus. To study the role of virus replication in this disease, helper-free stocks of defective Duplan virus were produced. These stocks were highly pathogenic in absence of detectable replicating murine leukemia viruses (MuLVs) other than xenotropic MuLV. They induced expansion of the infected cell population (over 1000-fold), and this cell expansion was oligoclonal in origin and, most likely, arose through cell division. These results suggest that this defective virus is oncogenic, inducing a primary neoplasia associated with an acquired immunodeficiency syndrome as a paraneoplastic syndrome. These data emphasize the need to determine whether virus replication is necessary for the progression of other immunodeficiency diseases, including acquired immunodeficiency syndrome, and whether these diseases also represent paraneoplastic syndromes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, M -- Simard, C -- Jolicoeur, P -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1614-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, Clinical Research Institute of Montreal, Quebec, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2480643" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blotting, Southern ; Cells, Cultured ; DNA, Viral/isolation & purification ; Defective Viruses/isolation & purification/*pathogenicity ; Helper Viruses/isolation & purification ; Immunologic Deficiency Syndromes/*microbiology ; Leukemia Virus, Murine/pathogenicity ; Lymph Nodes/microbiology ; Lymphocytes/microbiology ; Mice ; Mice, Inbred C57BL ; RNA-Directed DNA Polymerase/analysis ; Retroviridae/isolation & purification/*pathogenicity ; Retroviridae Infections/*microbiology ; Spleen/microbiology
    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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  • 2
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    A model of human acute lymphoblastic leukemia in immune-deficient SCID mice (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: A human acute lymphoblastic leukemia (ALL) cell line that was transplanted into immune-deficient SCID mice proliferated in the hematopoietic tissues, invaded various organs, and led to the death of the mice. The distribution of leukemic cells in SCID mice was similar to the course of the disease in children. A-1 cells marked with a retrovirus vector showed clonal evolution after the transplant. SCID mice that were injected with bone marrow from three patients with non-T ALL had leukemic cells in their bone marrow and spleen. This in vivo model of human leukemia is an approach to understanding leukemic growth and progression and is a novel system for testing new treatment strategies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kamel-Reid, S -- Letarte, M -- Sirard, C -- Doedens, M -- Grunberger, T -- Fulop, G -- Freedman, M H -- Phillips, R A -- Dick, J E -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1597-600.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Hospital for Sick Children, Toronto, Ontario.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2595371" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/pathology ; Cell Line ; Clone Cells ; DNA, Neoplasm/isolation & purification ; Humans ; Immunologic Deficiency Syndromes/*pathology ; Kidney/pathology ; Liver/pathology ; Mice ; Mice, Mutant Strains ; Neoplasm Transplantation ; Precursor Cell Lymphoblastic Leukemia-Lymphoma/*pathology ; Transplantation, Heterologous
    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
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    Membrane anchoring of a human IgG Fc receptor (CD16) determined by a single amino acid (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: CD16 is a low-affinity immunoglobulin G (IgG) Fc receptor that is expressed on natural killer (NK) cells, granulocytes, activated macrophages, and some T lymphocytes. Two similar genes, CD16-I and CD16-II, encode membrane glycoproteins that are anchored by phosphatidylinositol (PI)-glycan and transmembrane polypeptides, respectively. The primary structural requirements for PI-linkage were examined by constructing a series of hybrid cDNA molecules. Although both cDNA's have an identical COOH-terminal hydrophobic segment, CD16-I has Ser203 whereas CD16-II has Phe203. Conversion of Phe to Ser in CD16-II permits expression of a PI-glycan-anchored glycoprotein, whereas conversion of Ser to Phe in CD16-I prevents PI-glycan linkage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lanier, L L -- Cwirla, S -- Yu, G -- Testi, R -- Phillips, J H -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1611-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Becton Dickinson Monoclonal Center, Inc., Mountain View, CA 94043.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2531919" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/*genetics ; Antigens, Differentiation/*genetics/metabolism ; Base Sequence ; Cell Line ; Cell Membrane/immunology ; Codon/genetics ; *Genes, Immunoglobulin ; Granulocytes/immunology ; Humans ; Membrane Glycoproteins/*genetics ; Molecular Sequence Data ; *Phenylalanine ; Receptors, Fc/*genetics/metabolism ; Receptors, IgG ; *Serine ; 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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  • 4
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    Key piece found for immunology puzzle? (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1561.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2595369" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/genetics ; B-Lymphocytes/immunology ; DNA Nucleotidyltransferases/genetics/metabolism ; Genes ; *Genes, Immunoglobulin ; Humans ; Receptors, Antigen, T-Cell/*genetics ; T-Lymphocytes/immunology ; VDJ Recombinases
    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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    Molecular cloning of the thyrotropin receptor (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: The pituitary hormone thyrotropin, or thyroid-stimulating hormone (TSH), is the main physiological agent that regulates the thyroid gland. The thyrotropin receptor (TSHR) was cloned by selective amplification with the polymerase chain reaction of DNA segments presenting sequence similarity with genes for G protein-coupled receptors. Out of 11 new putative receptor clones obtained from genomic DNA, one had sequence characteristics different from all the others. Although this clone did not hybridize to thyroid transcripts, screening of a dog thyroid complementary DNA (cDNA) library at moderate stringency identified a cDNA encoding a 4.9-kilobase thyroid-specific transcript. The polypeptide encoded by this thyroid-specific transcript consisted of a 398-amino acid residue amino-terminal segment, constituting a putative extracellular domain, connected to a 346-residue carboxyl-terminal domain that contained seven putative transmembrane segments. Expression of the cDNA conferred TSH responsiveness to Xenopus oocytes and Y1 cells and a TSH binding phenotype to COS cells. The TSHR and the receptor for luteinizing hormone-choriogonadotropin constitute a subfamily of G protein-coupled receptors with distinct sequence characteristics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parmentier, M -- Libert, F -- Maenhaut, C -- Lefort, A -- Gerard, C -- Perret, J -- Van Sande, J -- Dumont, J E -- Vassart, G -- R01-DK21732/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1620-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Recherche Interdisciplinaire, Faculte de Medecine, Universite Libre de Bruxelles, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2556796" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Blotting, Northern ; Cell Line ; *Cloning, Molecular ; Cyclic AMP ; Dogs ; Female ; *Genes ; Molecular Sequence Data ; Oocytes/drug effects/metabolism ; Organ Specificity ; Polymerase Chain Reaction/methods ; RNA, Messenger/genetics ; Receptors, Thyrotropin/*genetics ; Thyrotropin/pharmacology ; Transcription, Genetic ; Xenopus
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Conserved repetitive epitope recognized by CD4+ clones from a malaria-immunized volunteer (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: T cell clones obtained from a human volunteer immunized with Plasmodium falciparum sporozoites specifically recognized the native circumsporozoite (CS) antigen expressed on P. falciparum sporozoites, as well as bacteria- and yeast-derived recombinant falciparum CS proteins. The response of these CD4+ CD8- cells was species-specific, since the clones did not proliferate or secrete gamma interferon when challenged with sporozoites or recombinant CS proteins of other human, simian, or rodent malarias. The epitope recognized by the sporozoite-specific human T cell clones mapped to the 5' repeat region of the CS protein and was contained in the NANPNVDPNANP sequence.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nardin, E H -- Herrington, D A -- Davis, J -- Levine, M -- Stuber, D -- Takacs, B -- Caspers, P -- Barr, P -- Altszuler, R -- Clavijo, P -- AI25085/AI/NIAID NIH HHS/ -- AI62533/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1603-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical and Molecular Parasitology, New York University, NY 10010.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2480642" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD4/*immunology ; Antigens, Protozoan/*immunology ; Cells, Cultured ; Clone Cells ; Epitopes/*analysis ; Humans ; Interferon-gamma/biosynthesis ; Lymphocyte Activation ; Malaria/*immunology ; Molecular Sequence Data ; Plasmodium falciparum/*immunology ; *Protozoan Proteins ; Recombinant Proteins/immunology ; T-Lymphocytes/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Mechanisms for regulating expression of membrane isoforms of Fc gamma RIII (CD16) (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: Granulocyte and natural killer (NK) cell Fc receptors for immunoglobulin G (CD16) differ in only a few amino acids, yet have phosphatidylinositol glycan (PIG) or polypeptide membrane anchors, respectively. Mutagenesis shows that anchoring is regulated by a serine residue near the PIG anchor attachment site in the extracellular domain. The NK cell isoform was not expressed on the surface of COS cells unless cotransfected with a subunit that was expressed in NK cells and that was identical to the gamma subunit of the high affinity IgE Fc receptor (Fc epsilon RI). However, the CD16 sequence and not expression of the gamma subunit is dominant in regulating PIG reanchoring.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hibbs, M L -- Selvaraj, P -- Carpen, O -- Springer, T A -- Kuster, H -- Jouvin, M H -- Kinet, J P -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1608-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2531918" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/genetics ; Antigens, Differentiation/*genetics ; Cell Line ; Cell Membrane/immunology ; Flow Cytometry ; *Gene Expression Regulation ; Genes, Immunoglobulin ; Granulocytes/immunology ; Humans ; Immunoglobulin G ; Killer Cells, Natural/immunology ; L Cells (Cell Line)/immunology ; Mice ; Mutation ; RNA, Messenger/genetics/isolation & purification ; Receptors, Fc/*genetics ; Receptors, IgG ; 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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  • 8
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    Steroid binding at sigma-"opioid" receptors (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwarz, S -- Pohl, P -- Zhou, G Z -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1635-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2556797" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding, Competitive ; Brain/metabolism ; Kinetics ; Ligands ; Lymphocytes/metabolism ; Progesterone/blood/cerebrospinal fluid/metabolism ; Receptors, Opioid/*metabolism ; Receptors, sigma ; Steroids/*metabolism/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Regulation of proenkephalin by Fos and Jun (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: Fos and Jun form a heterodimeric complex that associates with the nucleotide sequence motif known as the AP-1 binding site. Although this complex has been proposed to function as a transcriptional regulator in neurons, no specific target gene has yet been identified. Proenkephalin mRNA increased in the hippocampus during seizure just after an increase in c-fos and c-jun expression was detected. Fos-Jun complexes bound specifically to a regulatory sequence in the 5' control region of the proenkephalin gene. Furthermore, c-fos and c-jun stimulated transcription from this control region synergistically in transactivation assays. These data suggest that the proenkephalin gene may be a physiological target for Fos and Jun in the hippocampus and indicate that these proto-oncogene transcription factors may play a role in neuronal responses to stimulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sonnenberg, J L -- Rauscher, F J 3rd -- Morgan, J I -- Curran, T -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1622-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Oncology, Molecular Biology, Roche Research Center, Nutley, NJ 07110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2512642" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Brain/*metabolism ; Cell Line ; DNA-Binding Proteins/*genetics/metabolism ; Enhancer Elements, Genetic ; Enkephalins/*genetics ; *Gene Expression Regulation ; *Genes ; Hippocampus/metabolism ; Mice ; Molecular Sequence Data ; Promoter Regions, Genetic ; Protein Precursors/*genetics ; Protein-Tyrosine Kinases/*genetics ; Proto-Oncogene Proteins/*genetics/metabolism ; Proto-Oncogene Proteins c-fos ; Proto-Oncogene Proteins c-jun ; *Proto-Oncogenes ; RNA, Messenger/genetics ; Teratoma ; Transcription Factors/*genetics/metabolism ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Does voltage affect excitation-contraction coupling in the heart? (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-12-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cannell, M B -- Berlin, J R -- Lederer, W J -- New York, N.Y. -- Science. 1989 Dec 22;246(4937):1640.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2627235" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism/*physiology ; Cell Membrane/physiology ; Electric Conductivity ; Heart/*physiology ; Membrane Potentials ; *Myocardial Contraction ; Sarcoplasmic Reticulum/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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