PMID- 24566094 OWN - NLM STAT- MEDLINE DCOM- 20150518 LR - 20221207 IS - 1473-5571 (Electronic) IS - 0269-9370 (Linking) VI - 28 IP - 7 DP - 2014 Apr 24 TI - HLA-B*35: 05 is a protective allele with a unique structure among HIV-1 CRF01_AE-infected Thais, in whom the B*57 frequency is low. PG - 959-67 LID - 10.1097/QAD.0000000000000206 [doi] AB - OBJECTIVE: To identify protective human leukocyte antigen (HLA) alleles in an HIV-infected south-east Asian population, in whom HLA-B*57 prevalence is lower than other ethnic groups, and HIV-1 CRF01_AE is the dominant circulating subtype. DESIGN: Cross-sectional study of Thai patients with chronic HIV infection. METHODS: Five hundred and fifty-seven HIV-1 CRF01_AE-infected Thais were recruited. Their HLA type and viral load were determined to statistically analyze the association of each allele in viral control. In-silico molecular dynamics was also used to evaluate the effect of HLA structure variants on epitope binding. RESULTS: HLA-B*35:05 was identified as the most protective allele (P=0.003, q=0.17), along with HLA-B*57:01 (P=0.044, q=0.31). Structurally, HLA-B*35:05 belonged to the HLA-B*35-PY group of HLA-B*35 alleles; however, unlike the other HLA-B*35 alleles that carry Arg (R) at residue 97, it has unique sequences at T94, L95, and S97, located within the peptide-binding groove. Analysis of the three-dimensional HLA structure and molecular dynamics indicates that S97 in HLA-B*35:05 leads to less flexibility in the groove, and shorter distances between the alpha-helixes compared with the disease-susceptible HLA-B*35-PY allele, HLA-B*35:01. CONCLUSION: These data indicate the existence of a protective effect of HLA-B*57 across ethnic groups and highlight HLA-B*35:05 as an allele uniquely protective in subtype CRF01_AE-infected Thais. The divergence of HLA-B*35:05 from conventional HLA-B*35-PY structural sequences at the peptide-binding groove is consistent with previous studies that have identified HLA residue 97 as strongly influential in shaping HLA impact on immune control of HIV, and that a more restricted peptide-binding motif may be associated with improved control. FAU - Mori, Masahiko AU - Mori M AD - Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Sakamoto, Nagasaki City, Nagasaki, Japan. FAU - Wichukchinda, Nuanjun AU - Wichukchinda N FAU - Miyahara, Reiko AU - Miyahara R FAU - Rojanawiwat, Archawin AU - Rojanawiwat A FAU - Pathipvanich, Panita AU - Pathipvanich P FAU - Maekawa, Tomoyuki AU - Maekawa T FAU - Miura, Toshiyuki AU - Miura T FAU - Goulder, Philip AU - Goulder P FAU - Yasunami, Michio AU - Yasunami M FAU - Ariyoshi, Koya AU - Ariyoshi K FAU - Sawanpanyalert, Pathom AU - Sawanpanyalert P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - AIDS JT - AIDS (London, England) JID - 8710219 RN - 0 (HLA-B35 Antigen) SB - IM EIN - AIDS. 2015 Jun 19;29(10):1275 MH - Adolescent MH - Adult MH - Animals MH - Asian People MH - Cross-Sectional Studies MH - *Disease Resistance MH - Female MH - Gene Frequency MH - Genetic Association Studies MH - HIV Infections/*epidemiology/*immunology/virology MH - HIV-1/*immunology/isolation & purification MH - HLA-B35 Antigen/*genetics MH - Humans MH - Male MH - Middle Aged MH - Thailand MH - Viral Load MH - Young Adult EDAT- 2014/02/26 06:00 MHDA- 2015/05/20 06:00 CRDT- 2014/02/26 06:00 PHST- 2014/02/26 06:00 [entrez] PHST- 2014/02/26 06:00 [pubmed] PHST- 2015/05/20 06:00 [medline] AID - 10.1097/QAD.0000000000000206 [doi] PST - ppublish SO - AIDS. 2014 Apr 24;28(7):959-67. doi: 10.1097/QAD.0000000000000206.