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  • Mice  (50)
  • Models, Molecular
  • 2010-2014
  • 1995-1999  (62)
  • 1996  (62)
  • 1
    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
    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: 1996-05-10
    Description: Transcription factors of the NFAT family are thought to play a major role in regulating the expression of cytokine genes and other inducible genes during the immune response. The role of NFAT1 was investigated by targeted disruption of the NFAT1 gene. Unexpectedly, cells from NFAT1 -/- mice showed increased primary responses to Leishmania major and mounted increased secondary responses to ovalbumin in vitro. In an in vivo model of allergic inflammation, the accumulation of eosinophils and levels of serum immunoglobulin E were increased in NFAT1 -/- mice. These results suggest that NFAT1 exerts a negative regulatory influence on the immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xanthoudakis, S -- Viola, J P -- Shaw, K T -- Luo, C -- Wallace, J D -- Bozza, P T -- Luk, D C -- Curran, T -- Rao, A -- CA42471/CA/NCI NIH HHS/ -- GM46227/GM/NIGMS NIH HHS/ -- P30 CA21765/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 May 10;272(5263):892-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Neurogenetics Program, Department of CNS Research, Hoffmann-LaRoche, Nutley, NJ 07110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8629027" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, Protozoan/immunology ; Cell Line ; Cytokines/biosynthesis ; DNA-Binding Proteins/genetics/*physiology ; Eosinophils/immunology ; Gene Targeting ; Hypersensitivity/*immunology ; *Immunity ; Immunoglobulin E/biosynthesis ; Immunologic Memory ; Leishmania major/immunology ; *Lymphocyte Activation ; Mice ; Molecular Sequence Data ; NFATC Transcription Factors ; *Nuclear Proteins ; Ovalbumin/immunology ; T-Lymphocytes/immunology ; Transcription Factors/genetics/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1996-03-01
    Description: HLA-DM (DM) facilitates peptide loading of major histocompatibility complex class II molecules in human cell lines. Mice lacking functional H2-M, the mouse equivalent of DM, have normal amounts of class II molecules at the cell surface, but most of these are associated with invariant chain-derived CLIP peptides. These mice contain large numbers of CD4+ T cells, which is indicative of positive selection in the thymus. Their CD4+ cells were unresponsive to self H2-M-deficient antigen-presenting cells (APCs) but were hyperreactive to wild-type APCs. H2-M-deficient APCs failed to elicit proliferative responses from wild-type T cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fung-Leung, W P -- Surh, C D -- Liljedahl, M -- Pang, J -- Leturcq, D -- Peterson, P A -- Webb, S R -- Karlsson, L -- New York, N.Y. -- Science. 1996 Mar 1;271(5253):1278-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉R. W. Johnson Pharmaceutical Research Institute, San Diego, CA 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638109" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antigen Presentation ; Antigen-Presenting Cells/*immunology ; Antigens, Differentiation, B-Lymphocyte/immunology/metabolism ; Base Sequence ; CD4-Positive T-Lymphocytes/*immunology ; Cells, Cultured ; Gene Targeting ; Histocompatibility Antigens Class II/genetics/*immunology/metabolism ; Isoantigens/immunology ; Lymphocyte Activation ; Mice ; Molecular Sequence Data ; Mutation
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 1996-03-01
    Description: In mice deficient in either lymphotoxin-alpha (LT-alpha) or the type I tumor necrosis factor (TNF) receptor, but not the type II TNF receptor, germinal centers failed to develop in peripheral lymphoid organs. Germinal center formation was restored in LT-alpha-deficient mice by transplantation of normal bone marrow, indicating that the LT-alpha-expressing cells required to establish this lymphoid structure are derived from bone marrow.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsumoto, M -- Mariathasan, S -- Nahm, M H -- Baranyay, F -- Peschon, J J -- Chaplin, D D -- New York, N.Y. -- Science. 1996 Mar 1;271(5253):1289-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Immunology and Howard Hughes Medical Institute, 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/8638112" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow Cells ; Bone Marrow Transplantation ; Gene Targeting ; Germinal Center/cytology/immunology/*physiology ; Immunization ; Lymphotoxin-alpha/genetics/*physiology ; Mice ; Receptors, Tumor Necrosis Factor/genetics/*physiology ; Spleen/anatomy & histology/*immunology
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  • 5
    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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  • 6
    Publication Date: 1996-09-13
    Description: The solution structure of a human immunodeficiency virus type-1 (HIV-1) Rev peptide bound to stem-loop IIB of the Rev response element (RRE) RNA was solved by nuclear magnetic resonance spectroscopy. The Rev peptide has an alpha-helical conformation and binds in the major groove of the RNA near a purine-rich internal loop. Several arginine side chains make base-specific contacts, and an asparagine residue contacts a G.A base pair. The phosphate backbone adjacent to a G.G base pair adopts an unusual structure that allows the peptide to access a widened major groove. The structure formed by the two purine-purine base pairs of the RRE creates a distinctive binding pocket that the peptide can use for specific recognition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Battiste, J L -- Mao, H -- Rao, N S -- Tan, R -- Muhandiram, D R -- Kay, L E -- Frankel, A D -- Williamson, J R -- GM-08344/GM/NIGMS NIH HHS/ -- GM-39589/GM/NIGMS NIH HHS/ -- GM-53320/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Sep 13;273(5281):1547-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, 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/8703216" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arginine/chemistry ; Asparagine/chemistry ; Base Composition ; Base Sequence ; *DNA-Binding Proteins ; Fungal Proteins/chemistry ; Gene Products, rev/*chemistry/*metabolism ; *Genes, env ; HIV-1/*chemistry ; Hydrogen Bonding ; Magnetic Resonance Spectroscopy ; Models, Molecular ; Molecular Sequence Data ; *Nucleic Acid Conformation ; Protein Kinases/chemistry ; *Protein Structure, Secondary ; RNA, Viral/*chemistry/genetics/metabolism ; *Saccharomyces cerevisiae Proteins ; Threonine/chemistry ; rev Gene Products, Human Immunodeficiency Virus
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  • 7
    Publication Date: 1996-03-01
    Description: T cells activated by antigen receptor stimulation in the absence of accessory cell-derived costimulatory signals lose the capacity to synthesize the growth factor interleukin-2 (IL-2), a state called clonal anergy. An analysis of CD3- and CD28-induced signal transduction revealed reduced ERK and JNK enzyme activities in murine anergic T cells. The amounts of ERK and JNK proteins were unchanged, and the kinases could be fully activated in the presence of phorbol 12-myristate 13-acetate. Dephosphorylation of the calcineurin substrate NFATp (preexisting nuclear factor of activated T cells) also remained inducible. These results suggest that a specific block in the activation of ERK and JNK contributes to defective IL-2 production in clonal anergy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, W -- Whaley, C D -- Mondino, A -- Mueller, D L -- R29 AI 31669/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1996 Mar 1;271(5253):1272-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Minnesota Medical School, Minneapolis 55455, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638107" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD28/immunology ; Antigens, CD3/immunology ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; *Clonal Anergy ; Clone Cells ; Cyclosporine/pharmacology ; DNA-Binding Proteins/metabolism ; Enhancer Elements, Genetic ; Enzyme Activation ; Interleukin-2/biosynthesis ; Ionomycin/pharmacology ; JNK Mitogen-Activated Protein Kinases ; Lymphocyte Activation ; Mice ; Mitogen-Activated Protein Kinase 1 ; Mitogen-Activated Protein Kinase 3 ; *Mitogen-Activated Protein Kinases ; NFATC Transcription Factors ; *Nuclear Proteins ; Protein-Tyrosine Kinases/metabolism ; *Signal Transduction ; T-Lymphocytes, Helper-Inducer/enzymology/*immunology ; Tetradecanoylphorbol Acetate/pharmacology ; Transcription Factor AP-1/metabolism ; Transcription Factors/metabolism
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  • 8
    Publication Date: 1996-10-11
    Description: The mechanisms that maintain the epithelial integrity of the gastrointestinal tract remain largely undefined. The gene encoding intestinal trefoil factor (ITF), a protein secreted throughout the small intestine and colon, was rendered nonfunctional in mice by targeted disruption. Mice lacking ITF had impaired mucosal healing and died from extensive colitis after oral administration of dextran sulfate sodium, an agent that causes mild epithelial injury in wild-type mice. ITF-deficient mice manifested poor epithelial regeneration after injury. These findings reveal a central role for ITF in the maintenance and repair of the intestinal mucosa.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mashimo, H -- Wu, D C -- Podolsky, D K -- Fishman, M C -- P30DK43351/DK/NIDDK NIH HHS/ -- R01DK46906/DK/NIDDK NIH HHS/ -- T32DK07191/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1996 Oct 11;274(5285):262-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gastrointestinal Unit and Center for the Study of Inflammatory Bowel Disease, Jackson 7, Massachusetts General Hospital, Fruit Street, Boston, MA 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8824194" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Movement ; Colitis/etiology/pathology ; Colon/drug effects/pathology/physiology ; Dextran Sulfate/pharmacology ; Gene Targeting ; Growth Substances/genetics/pharmacology/*physiology ; Intestinal Mucosa/drug effects/pathology/*physiology ; Mice ; Molecular Sequence Data ; *Mucins ; *Muscle Proteins ; *Neuropeptides ; Peptides/genetics/pharmacology/*physiology ; Recombinant Proteins/pharmacology
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  • 9
    Publication Date: 1996-10-18
    Description: The Escherichia coli DNA binding protein RuvA acts in concert with the helicase RuvB to drive branch migration of Holliday intermediates during recombination and DNA repair. The atomic structure of RuvA was determined at a resolution of 1.9 angstroms. Four monomers of RuvA are related by fourfold symmetry in a manner reminiscent of a four-petaled flower. The four DNA duplex arms of a Holliday junction can be modeled in a square planar configuration and docked into grooves on the concave surface of the protein around a central pin that may facilitate strand separation during the migration reaction. The model presented reveals how a RuvAB-junction complex may also accommodate the resolvase RuvC.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rafferty, J B -- Sedelnikova, S E -- Hargreaves, D -- Artymiuk, P J -- Baker, P J -- Sharples, G J -- Mahdi, A A -- Lloyd, R G -- Rice, D W -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1996 Oct 18;274(5286):415-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Krebs Institute, Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, UK. d.rice@sheffield.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8832889" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*chemistry/metabolism ; Base Composition ; Crystallography, X-Ray ; DNA Helicases/metabolism ; DNA, Bacterial/chemistry/*metabolism ; DNA-Binding Proteins/*chemistry/metabolism ; Endodeoxyribonucleases/metabolism ; Escherichia coli ; *Escherichia coli Proteins ; Hydrogen Bonding ; Models, Molecular ; *Nucleic Acid Conformation ; Oligodeoxyribonucleotides/chemistry/metabolism ; *Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; *Recombination, Genetic
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  • 10
    Publication Date: 1996-06-21
    Description: Insulin-dependent diabetes mellitus (IDDM) is a multigenic autoimmune disease. An IDDM susceptibility gene was mapped to chromosome 2q34. This gene may act early in diabetogenesis, because "preclinical" individuals also showed linkage. Human leukocyte antigen (HLA)-disparate, but not HLA-identical, sibs showed linkage, which was even stronger in families with affected females. The genes encoding insulin-like growth factor-binding proteins 2 and 5 were mapped to a 4-megabase pair interval near this locus. These results indicate the existence of a gene that acts at an early stage in IDDM development, screening for which may identify a specific subset of at-risk individuals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morahan, G -- Huang, D -- Tait, B D -- Colman, P G -- Harrison, L C -- New York, N.Y. -- Science. 1996 Jun 21;272(5269):1811-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Walter and Eliza Hall Institute of Medical Research, Royal Melbourne Hospital, Victoria, Australia. morahan@wehi.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650584" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Autoantibodies/analysis ; Chromosome Mapping ; Chromosomes, Human, Pair 2/*genetics ; Diabetes Mellitus, Type 1/*genetics ; Female ; Gene Frequency ; *Genetic Linkage ; *Genetic Markers ; Genetic Predisposition to Disease ; HLA Antigens/genetics ; Humans ; Insulin-Like Growth Factor Binding Protein 2/genetics ; Insulin-Like Growth Factor Binding Protein 5/genetics ; Islets of Langerhans/immunology ; Male ; Mice ; Mice, Inbred NOD/genetics ; Microsatellite Repeats
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