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  • 1
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    Differential regulation of HIV-1 fusion cofactor expression by CD28 costimulation of CD4+ T cells (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-04-11
    Description: Activation of CD4(+) T lymphocytes from human immunodeficiency virus-type 1 (HIV-1)-infected donors with immobilized antibodies to CD3 and CD28 induces a virus-resistant state. This effect is specific for macrophage-tropic HIV-1. Transcripts encoding CXCR4/Fusin, the fusion cofactor used by T cell line-tropic isolates, were abundant in CD3/CD28-stimulated cells, but transcripts encoding CCR5, the fusion cofactor used by macrophage-tropic viruses, were not detectable. Thus, CD3/CD28 costimulation induces an HIV-1-resistant phenotype similar to that seen in some highly exposed and HIV-uninfected individuals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carroll, R G -- Riley, J L -- Levine, B L -- Feng, Y -- Kaushal, S -- Ritchey, D W -- Bernstein, W -- Weislow, O S -- Brown, C R -- Berger, E A -- June, C H -- St Louis, D C -- New York, N.Y. -- Science. 1997 Apr 11;276(5310):273-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Henry M. Jackson Foundation for the Advancement of Military Medicine, Rockville, MD 20850, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9092480" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Monoclonal/immunology ; Antigens, CD28/*immunology ; Antigens, CD3/immunology ; CD4-Positive T-Lymphocytes/*immunology/metabolism/*virology ; Cells, Cultured ; Gene Expression Regulation ; HIV-1/*physiology ; Humans ; Interleukin-2/immunology ; *Lymphocyte Activation ; Membrane Fusion ; Membrane Proteins/*genetics ; Muromonab-CD3/immunology ; Phytohemagglutinins/pharmacology ; RNA, Messenger/genetics/metabolism ; Receptors, CCR5 ; Receptors, CXCR4 ; Receptors, Cytokine/genetics ; Receptors, HIV/*genetics ; Up-Regulation ; Virus Replication
    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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    Antiviral effect and ex vivo CD4+ T cell proliferation in HIV-positive patients as a result of CD28 costimulation (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-06-28
    Description: Because stimulation of CD4+ lymphocytes leads to activation of human immunodeficiency virus-type 1 (HIV-1) replication, viral spread, and cell death, adoptive CD4+ T cell therapy has not been possible. When antigen and CD28 receptors on cultured T cells were stimulated by monoclonal antibodies (mAbs) to CD3 and CD28 that had been immobilized, there was an increase in the number of polyclonal CD4+ T cells from HIV-infected donors. Activated cells predominantly secreted cytokines associated with T helper cell type 1 function. The HIV-1 viral load declined in the absence of antiretroviral agents. Moreover, CD28 stimulation of CD4+ T cells from uninfected donors rendered these cells highly resistant to HIV-1 infection. Immobilization of CD28 mAb was crucial to the development of HIV resistance, as cells stimulated with soluble CD28 mAb were highly susceptible to HIV infection. The CD28-mediated antiviral effect occurred early in the viral life cycle, before HIV-1 DNA integration. These data may facilitate immune reconstitution and gene therapy approaches in persons with HIV infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levine, B L -- Mosca, J D -- Riley, J L -- Carroll, R G -- Vahey, M T -- Jagodzinski, L L -- Wagner, K F -- Mayers, D L -- Burke, D S -- Weislow, O S -- St Louis, D C -- June, C H -- AI29331/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1996 Jun 28;272(5270):1939-43.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Naval Medical Research Institute, Bethesda, Maryland 20889, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8658167" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Monoclonal/immunology ; Antigens, CD28/*immunology ; Antigens, CD3/immunology ; CD4 Lymphocyte Count ; CD4-Positive T-Lymphocytes/cytology/*immunology/*virology ; Cell Division ; Cells, Cultured ; Chemokines/metabolism ; Cytokines/metabolism ; HIV Infections/immunology/*virology ; HIV-1/immunology/*physiology ; Humans ; Interleukin-2/pharmacology ; *Lymphocyte Activation ; Phytohemagglutinins/pharmacology ; Virus Integration ; Virus Replication
    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)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
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