1. HIV-1 vaccine-induced immunity in the test-of-concept Step Study: a case-cohort analysis.
- Author
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McElrath, M. Juliana, De Rosa, Stephen C., Moodie, Zoe, Dubey, Sheri, Kierstead, Lisa, Janes, Holly, Defawe, Olivier D., Carter, Donald K., Hural, John, Akondy, Rama, Buchbinder, Susan P., Robertson, Michael N., Mehrotra, Devan V., Self, Steven G., Corey, Lawrence, Shiver, John W., and Casimiro, Danilo R.
- Subjects
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COHORT analysis , *AIDS vaccines , *IMMUNITY , *INFECTION risk factors , *T cells , *INTERFERONS - Abstract
The article presents a case-cohort analysis which assessed the MRKAd5 HIV-1 gag/pol/nef vaccine for vaccine-induced immunity and potential contributions to infection risk. The study was performed in response to the results of the Step Study which found higher HIV-1 incidence in vaccine-treated men than in placebo-treated men with pre-existing adenovirus serotype 5 immunity. Validated interferon-γ ELISPOT and intracellular cytokine staining assays were used to characterise HIV-specific T cells to assess for immunogenicity. Flow cytometric studies were conducted to establish the effects of vaccine and pre-existing Ad5 immunity on infection risk. The MRKAd5 HIV-1 gag/pol/nef vaccine was found to be highly immunogenic for inducing HIV-specific CD8+ T cells.
- Published
- 2008
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