Journal
JOURNAL OF INFECTIOUS DISEASES
Volume 184, Issue 11, Pages 1465-1469Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/324488
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Funding
- NIAID NIH HHS [AI-35176, AI-41536] Funding Source: Medline
- PHS HHS [U64/CCU802715-06] Funding Source: Medline
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Human immunodeficiency virus type 1 (HIV-1)-specific memory, or precursor, cytotoxic T lymphocytes (CTL) in 14 subjects who had recently experienced seroconversion were evaluated with respect to virus set point, defined as plasma HIV-1 RNA level 6 months after seroconversion. Env-, Gag-, Pol-, and Nef-specific precursor CTL were detected in Cr-51-release assays, using antigen-stimulated peripheral blood mononuclear cells as effectors and B cell lines infected with HIV-1-vaccinia recombinants as targets. All subjects tested had precursor CTL specific to at least 2 HIV-1 antigens. Detection of Env- specific precursor CTL was associated with a high set point (P = .0221). The number of antigens recognized tended to be greater in subjects with higher set points (rho = .45621; P = .1171). Gag- specific precursor CTL frequency correlated inversely with set point (rho = -.8478; P = .0003). Two heterozygotes for a 32-bp deletion in CCR5 had the lowest set points (P = .0220) and highest Gag precursor CTL frequencies (P = .0128). These data suggest that host factors that restrict viral replication may be important determinants of the level of HIV-1-specific precursor CTL.
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