Abstract
The role of histocompatibility antigens in HIV infection has been investigated by several approaches. Thus the haplotype A1B8DR3 that is usually linked to autoimmune disorders seems to be associated with accelerated progression to AIDS. Cross-reactivity between MHC antigens and HIV-1 proteins is evident from alloimmunization experiments in mice and xenoimmunization of monkeys with human cells. Furthermore, recent reports suggest that some individuals with uncommon HLA antigens may be resistant to HIV infection. In addition to expressing cross-reacting antigens with HLA, HIV also exhibits substantial amounts of host beta-2 microglobulin and HLA-DR attached to its surface. Taken together, these data are stimulating new hypotheses relevant for AIDS pathogenesis. Based on alloimmunization, novel approaches have also been proposed in attempts to promote an effective immune response to HIV.
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