Abstract
An effective HIV vaccine should be capable of eliciting virus-specific cytotoxic T lymphocytes (CTL). We have characterized the cellular and molecular features of a simian immunodeficiency virus of macaques (SIVmac) gag-specific CTL response in rhesus monkeys. We have shown that SIVmac-infected rhesus monkeys expressing the major histocompatibility complex (MHC) class I molecule Mamu-A*01 develop a SIVmac gag-specific CTL response which recognizes a 9 amino acid fragment of the gag protein in association with Mamu-A*01. Moreover, this peptide/MHC class I recognition is mediated by T cell receptors (TCR) employing a predominant Vβ gene family and Jβ gene. Using this understanding of a SIVmac-specific CTL response, we have shown that SIVmac-specific CTL can be elicited through three novel approaches to vaccination: a recombinant viral vector, a recombinant bacterial vector and a peptide vaccine. These studies illustrate the utility of the SIV/macaque model in AIDS vaccine research.
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