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  • Title: Cell-mediated immune response toward viral envelope and core antigens in gibbon apes (Hylobates lar) chronically infected with human immunodeficiency virus-1.
    Author: Lusso P, Markham PD, Ranki A, Earl P, Moss B, Dorner F, Gallo RC, Krohn KJ.
    Journal: J Immunol; 1988 Oct 01; 141(7):2467-73. PubMed ID: 3262661.
    Abstract:
    The specific cellular immune response toward envelope and core proteins of human immunodeficiency virus-1 (HIV-1) was investigated in gibbon apes chronically infected with the HTLV-IIIB isolate. After in vitro stimulation of PBMC from infected and control animals with HIV-1 Ag, DNA synthesis, IL-2R expression and IL-2 release were assayed. Cells from infected gibbon apes demonstrated a group-specific response toward whole virus preparations from three divergent HIV-1 isolates (HTLV-IIIB, HTLV-IIIRF, HTLV-IIIMN). Consistent responses were also detected against purified HIV-1 Ag, i.e., native gp120 envelope glycoprotein, recombinant gp160 glycoprotein, a synthetic peptide (peptide 7) representing a highly conserved region of gp120, and purified native core protein p24. In addition, lymphocytes from infected gibbon apes displayed a specific, MHC-restricted, cytotoxic activity against autologous cells expressing HIV-1 envelope or gag proteins. The specific T cell reactivity toward HIV-1 proteins observed in infected gibbons contrasts with findings in HIV-1 infected humans, and may help to explain the apparent discrepancy in the natural history of the infection between the two species.
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