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- Title
Tat-specific cytotoxic T lymphocytes select for SIV escape variants during resolution of primary viraemia.
- Authors
Allen, T M; O'Connor, D H; Jing, P; Dzuris, J L; Mothé, B R; Vogel, T U; Dunphy, E; Liebl, M E; Emerson, C; Wilson, N; Kunstman, K J; Wang, X; Allison, D B; Hughes, A L; Desrosiers, R C; Altman, J D; Wolinsky, S M; Sette, A; Watkins, D I
- Abstract
Human immunodeficiency virus (HIV) and simian immunodeficiency virus (SIV) infections are characterized by early peaks of viraemia that decline as strong cellular immune responses develop. Although it has been shown that virus-specific CD8-positive cytotoxic T lymphocytes (CTLs) exert selective pressure during HIV and SIV infection, the data have been controversial. Here we show that Tat-specific CD8-positive T-lymphocyte responses select for new viral escape variants during the acute phase of infection. We sequenced the entire virus immediately after the acute phase, and found that amino-acid replacements accumulated primarily in Tat CTL epitopes. This implies that Tat-specific CTLs may be significantly involved in controlling wild-type virus replication, and suggests that responses against viral proteins that are expressed early during the viral life cycle might be attractive targets for HIV vaccine development.
- Publication
Nature, 2000, Vol 407, Issue 6802, p386
- ISSN
0028-0836
- Publication type
Journal Article
- DOI
10.1038/35030124