期刊
JOURNAL OF VIROLOGY
卷 81, 期 11, 页码 5759-5765出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/JVI.00045-07
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- NIAID NIH HHS [U01 AI041531, P30 AI27763, U01 AI41531, P30 AI027763] Funding Source: Medline
CD8(+) T cells are believed to play an important role in the control of human immunodeficiency virus type 1 (HIV-1) infection. However, despite intensive efforts, it has not been possible to consistently link the overall magnitude of the CD8(+) T-cell response with control of HIV-1. Here, we have investigated the association of different CD8(+) memory T-cell subsets responding to HIV-1 in early infection with future control of HIV-1 viremia. Our results demonstrate that both a larger proportion and an absolute number of HIV-1-specific CD8(+) CCR7(-) CD45RA(+) effector memory T cells (T-EMRA cells) were associated with a lower future viral load set point. In contrast, a larger absolute number of HIV-1-specific CD8(+) CCR7(-) CD45RA(-) effector memory T cells (T-EM) was not related to the viral load set point. Overall, the findings suggest that CD8(+) T-EMRA cells have superior antiviral activity and indicate that both qualitative and quantitative aspects of the CD8(+) T-cell response need to be considered when defining the characteristics of protective immunity to HIV-1.
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