中国人群HLA-DRB11454等位基因和HLA-DRB1第3外显子鉴定意义

摘要

AIM: To identify human leukocyte antigen (HLA)-DRB11454 allele and HLA-DRB1 exon 3 sequence information in the Chinese population, which is significant for organ transplantation, cell transplantation, and human genetics.METHODS: Polymerase chain reaction sequence-based typing (PCR-SBT) was used to identify HLA-DRB1 alleles from 58 donor-recipient individuals who would undergo haemopoietic stem cell transplantation. Medium to high resolution polymerase chain reaction-reverse sequence specific oligonucleotide probe (PCR-RSSOP) was used to identify HLA-DRB1 alleles from 1 268 healthy donors from Guangdong province. The some ambiguous results of HLA-DRB114-associated alleles were confirmed by high resolution polymerase chain reaction-sequence-specific primer typing (PCR-SSP).RESULTS: HLA-DRB11403, 1406, 1410, 1412, 1418, 1425 and 1454 alleles were detected in 1 268 healthy donors.HLA-DRB11454 was confirmed in 8 ambiguous results of HLA-DRB11401/1434/1454 alleles, and HLA-DRB11454 was one of common alleles of HLA-DRB114 allele group in Guangdong population. HLA-DRB114 exon 3 sequence rninformation was confirmed to be polymorphic in Chinese population.CONCLUSION: HLA-DRB11454 and exon 3 of DRB1 are confirmed to be polymorphic in Chinese population, further rnelucidating that HLA-DRB1 axon 3 sequence information is important for Han population and some minority groups.%目的:在中国人群中鉴定人类白细胞抗原(human leukocyte antigen,HLA)DRB11454等位基因,分析供受者HLA-DRB1第3外显子DNA序列信息对器官移植、细胞移植及人类遗传学研究的重要现实意义.方法:应用聚合酶链反应-直接测序分型方法对58例等待造血干细胞移植供受者进行人类白细胞抗原测序分型,1 268例广东地区随机健康供者采用聚合酶链式反应-序列特异寡核苷酸探针反向杂交法进行HLA-DRB1中高分辨基因分型,部分模棱两可结果采用聚合酶链式反应-序列特异引物PCR-SSPHLA-DRB14高分辨方法分型法.结果:在1 268例广东地区随机健康人群中检出HLA-DRB11403,1406,1410,1412,1418,1425和1454等位基因,HLA-DRB1401/1434/1454等位基因模棱两可结果的8例样本被确认为HLA-DRB11454等位基因,DRB11454等位基因可能是广东人群最为常见的HLA-DRB114 基因. 中国人群HLA-DRB114第3外显子存在多态性.结论:中国人群HLA-DRB11454等位基因确认了DRB1等位基因第3外显子多态性的存在,进一步明确了开展中国汉族人群及少数民族HLA-DRB1第3外显子检测的意义.