| Literature DB >> 21471246 |
Lena Fadda1, Geraldine M O'Connor, Swati Kumar, Alicja Piechocka-Trocha, Clair M Gardiner, Mary Carrington, Daniel W McVicar, Marcus Altfeld.
Abstract
Epidemiological studies have shown the protective effect of KIR3DL1/HLA-Bw4 genotypes in human immunodeficiency virus type 1 (HIV-1) infection; however, the functional correlates for the protective effect remain unknown. We investigated whether human leukocyte antigen (HLA)-Bw4-presented HIV-1 peptides could affect the interaction between the inhibitory natural killer (NK) cell receptor KIR3DL1 and its ligand HLA-Bw4. Distinct HIV-1 epitopes differentially modulated the binding of KIR3DL1 to HLA-Bw4. Furthermore, cytotoxic T lymphocyte (CTL) escape mutations within the immunodominant HLA-B57 (Bw4)-restricted Gag epitope TSTLQEQIGW abrogated KIR3DL1 binding to HLA-B57, suggesting that sensing of CTL escape variants by NK cells can contribute to the protective effect of the KIR3DL1/HLA-Bw4 compound genotype.Entities:
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Year: 2011 PMID: 21471246 PMCID: PMC3126328 DOI: 10.1128/JVI.00412-11
Source DB: PubMed Journal: J Virol ISSN: 0022-538X Impact factor: 5.103