Distribution of HLA-C genes and HLA C-B, A-C-B haplotypes in Jinuo, Maonan and Wa ethnic populations in southwest China / 中华医学遗传学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the distribution of human leukocyte antigen(HLA) class I genes and haplotypes in Jinuo, Maonan and Wa ethnic populations in southwest China.</p><p><b>METHODS</b>Polymerase chain reaction-sequence specific oligonucleotide (PCR-SSO) typing by Luminex was performed to genotype the HLA-C alleles in unrelated healthy individuals in the three populations. HLA C-B, A-C-B haplotypes were computed by combining the previous HLA-A and -B genotyping data using Pypop7.0 software.</p><p><b>RESULTS</b>Eighteen HLA-C genes were identified in the three populations, with 17, 13 and 15 HLA-C genes in Jinuo, Maonan and Wa populations respectively. The alleles with frequency of more than 10% from high to low were C*0801, C*0102, C*0304 and C*0702 in the Jinuo, C*0304, C*0102, C*0702 and C*0801 in the Maonan, and C*1203, C*0801, C*0702 and C*0401 in the Wa. The predominant HLA A-C-B haplotypes were A*0207-C*0102-B*4601, A*1101-C*0801-B*1502 and A*1101-C*0304-B*1301 in the Jinuo, A*1101-C*0304-B*1301, A*0207-C*0102-B*4601, A*1101-C*0801-B*1502 and A*0203-C*0702-B*3802 in the Maonan, and A*1101-C*0801-B*1502, A*1101-C*1203-B*1532 and A*1101-C*0401-B*3501 in the Wa, respectively.</p><p><b>CONCLUSION</b>There were different characteristics in the distributions of HLA-C genes and HLA C-B, A-C-B haplotypes in the Jinuo, Maonan and Wa populations. However, haplotypes C*0801-B*1502 and A*1101-C*0801-B*1502 with high frequencies were common in the three populations, which might be the common ancient haplotypes of southern Chinese population. The study of HLA genes and haplotypes in these populations may be of significance in the study of population genetics, transplantation and disease association.</p>