Abstract:
:The importance of a broad CD8 T lymphocyte (CD8-TL) immune response to HIV is unknown. Ex vivo measurements of immunological activity directed at a limited number of defined epitopes provide an incomplete portrait of the actual immune response. We examined viral loads in simian immunodeficiency virus (SIV)-infected major histocompatibility complex (MHC)-homozygous and MHC-heterozygous Mauritian cynomolgus macaques. Chronic viremia in MHC-homozygous macaques was 80 times that in MHC-heterozygous macaques. Virus from MHC-homozygous macaques accumulated 11 to 14 variants, consistent with escape from CD8-TL responses after 1 year of SIV infection. The pattern of mutations detected in MHC-heterozygous macaques suggests that their epitope-specific CD8-TL responses are a composite of those present in their MHC-homozygous counterparts. These results provide the clearest example of MHC heterozygote advantage among individuals infected with the same immunodeficiency virus strain, suggesting that broad recognition of multiple CD8-TL epitopes should be a key feature of HIV vaccines.
journal_name
Sci Transl Medjournal_title
Science translational medicineauthors
O'Connor SL,Lhost JJ,Becker EA,Detmer AM,Johnson RC,Macnair CE,Wiseman RW,Karl JA,Greene JM,Burwitz BJ,Bimber BN,Lank SM,Tuscher JJ,Mee ET,Rose NJ,Desrosiers RC,Hughes AL,Friedrich TC,Carrington M,O'Connor DHdoi
10.1126/scitranslmed.3000524subject
Has Abstractpub_date
2010-03-10 00:00:00pages
22ra18issue
22eissn
1946-6234issn
1946-6242pii
2/22/22ra18journal_volume
2pub_type
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