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- W2160925670 abstract "Establishing a CD8+ T cell–mediated immune correlate of protection in HIV disease is crucial to the development of vaccines designed to generate cell-mediated immunity. Historically, neither the quantity nor breadth of the HIV-specific CD8+ T-cell response has correlated conclusively with protection. Here, we assess the quality of the HIV-specific CD8+ T-cell response by measuring 5 CD8+ T-cell functions (degranulation, IFN-γ, MIP-1β, TNF-α, and IL-2) simultaneously in chronically HIV-infected individuals and elite nonprogressors. We find that the functional profile of HIV-specific CD8+ T cells in progressors is limited compared to that of nonprogressors, who consistently maintain highly functional CD8+ T cells. This limited functionality is independent of HLA type and T-cell memory phenotype, is HIV-specific rather than generalized, and is not effectively restored by therapeutic intervention. Whereas the total HIV-specific CD8+ T-cell frequency did not correlate with viral load, the frequency and proportion of the HIV-specific T-cell response with highest functionality inversely correlated with viral load in the progressors. Thus, rather than quantity or phenotype, the quality of the CD8+ T-cell functional response serves as an immune correlate of HIV disease progression and a potential qualifying factor for evaluation of HIV vaccine efficacy." @default.
- W2160925670 created "2016-06-24" @default.
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- W2160925670 date "2006-06-15" @default.
- W2160925670 modified "2023-10-14" @default.
- W2160925670 title "HIV nonprogressors preferentially maintain highly functional HIV-specific CD8+ T cells" @default.
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- W2160925670 doi "https://doi.org/10.1182/blood-2005-12-4818" @default.
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