Overview
Publication
J Acquir Immune Defic Syndr. 2011 Nov 1; 58(3):248-52.
PubMed ID: 21709567
Title
Vaccine-induced HIV-specific CD8+ T cells utilize preferential HLA alleles and target specific regions of HIV-1
Authors
Friedrich D, Jalbert E, Dinges WL, Sidney J, Sette A, Huang Y, McElrath MJ, Horton H
Abstract
Most T cell-based HIV-1 vaccine candidates induce responses of limited breadth for reasons that are unclear. We evaluated vaccine-induced T-cell responses in individuals receiving an HIV-1 recombinant adenoviral vaccine. Certain HLA alleles (B27, B57, B35, and B14) are preferentially utilized to mount HIV-specific responses, whereas other alleles (A02 and B07) are rarely utilized (P < 0.001). This preference seems due to 4 following factors individually or in combination: higher affinity of specific peptides to specific HLA alleles; higher avidity of T-cell receptor; HLA and peptide interaction; and/or higher surface expression of certain HLA. Thus, HLA immunodominance plays a substantial role in vaccine-induced T-cell responses.
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