Abstract
Using the early protein HIV Nef, new HLA class I binding epitopes of importance for immune responses to HIV were predicted for common African alleles. In total we identified 45 epitopes previously not described for the HLA alleles A*30:01, A*30:02, B*58:01, and C*07:01 and compared them to reported epitopes, primarily from HLA-A*02:01, from the Los Alamos database and our own vaccine studies. Related to its small size, the Nef gene/protein appears to be able to contribute effectively to confer both stronger and broader cellular immunogenicity to an HIV-1 vaccine. We also propose feasible mutations of such an additional vaccine antigen to preserve its immunogenicity, modified not to confer HLA or CD4(+) down-regulating activities. This article includes data on a valuable HIV immunogenic component for a vaccine in Africa.
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