应用SSP-PCR/SSO方法进行中国辽宁汉族人HLA-DRB1基因的遗传多态性研究

Polymorphic Analysis of HLA- DRB1 Gene in Chinese Liaoning Han Population by Sequence Specific Primers-PCR and Sequence Specific Oligonucleotide Probes

对１５９名中国辽宁汉族个体的基因组ＤＮＡ进行分析，共检出４２种等位基因，其中以ＤＲＢ１０９０１２（１２．８％）、０７０１（１０．７％）、１５０１（１０．４％）最为常见，其次为ＤＲＢ１１２０１（７９％）、１２０２（７５％）、１１０１（６６％）、０３０１（５．０％）。并发现辽宁汉族人ＤＲＢ１等位基因频率与白种人间存在明显差异，揭示不同人种有其自己的主要等位基因。

HLA- DRB1 alleles of 159 Chinese donors from Liaoning Han population were determined by using a set of 23 sequence specific oligonucleotide probes directed to various DRB1 alleles. The samples were first amplified and divided into 8 groups by allele/group specific primers. The SSOs enable us to identify 58 different DRB1 subtypes. 42 alleles were detected in the study of this population. Among them, the DRB1 *09012(12.8%), *0701(10.7%), *1501(10.4%), *1201(7.9%), *1202(7.5%), *1101(6.6%), *0301(5.0%) are the most frequent. The significant difference was found in Chinese northern Han population by comparing the gene frequencies in Caucasoid samples, suggesting that there were principal DRB1 alleles in different races.