江浙沪汉族人群HLA-DRB1基因座遗传特征及不同人群频率分布比较

目的 调查江浙沪汉族人群HLA—DRBl基因座的遗传多态性，分析不同人群HLA-DRBl基因频率分布特征。方法 利用聚合酶链反应—序列特异寡核苷酸探针反向杂交和聚合酶链反应—序列特异引物技术对江浙沪地区626名健康无关汉族人进行HLA—DRBl基因分型，可检出DRBl*0101-1001，DRB3，DRB4，DRB5等等位基因，计算HLA—DRBl等位基因频率并与不同人群HLA—DRBl基因的多态性进行比较。结果 在江浙沪汉族人群中检出HLA—DRBl*0101、0301、0701、09012、1001、1201、1202、1301／02、1303／04、1401／04／05、1402／03／1305、1501／02、16021以及04xx、08xx等等位基因，其中DRBl*09012(17．97％)、04xx(12．53％)、1202(11．42％)及1501／02(11．02％)基因频率分布较高。江浙沪汉族人群无偏倚期望杂合性为0．9634，多态性信息含量为0．9024。结论 江浙沪汉族人群HLA-DRBl基因具有中国汉族人群共有的遗传特征，但也有其自身的分布特点，频率分布介于南、北汉族之间。在所比较的不同人群中中国汉族人群HLA—DRBl多态性较为丰富。

The genetic characteristic of HLA-DRB1 locus in the Jiangsu-Zhejiang-Shanghai Han population and a comparison of its frequency distribution with that of other populations

Objective To investigate the genetic polymorphism of HLA-DRB1 locus in Jiangsu-Zhejiang-Shanghai Han population and analyze the characteristic of the allele frequency distribution in comparison with that of other populations. Methods The technique of polymerase chain reaction-sequence specific primers(PCR-SSP) and reverse polymerase chain reaction-sequence specific oligonucleo-tide probe (PCR-SSOP) was adopted in genotyping a sample of 626 unrelated healthy individuals collected from a Chinese Han population in Jiangsu-Zhejiang-Shanghai area. HLA-DRB1*0101-1001, DRB3, DRB4 and DRB5 were detected. The allele frequency of HLA-DRB1 was calculated, and the allele frequency distribution of HLA-DRB1 in this population was compared with the results from other populations.Results HLA-DRB1*0101, 0301, 0701, 09012, 1001, 1201, 1202, 1301/02,1303/04,1401/04/05,1402/03/1305,1501/02, 16021 and 04xx, 08xx were detected in Jiangsu-Zhejiang-Shanghai Han population. The common HLA-DRB1*allele included 09012(17.97%), 04xx(12.53%), 1202(11.42%) and 1501/02(11.02%). The polymorphism information content is 0.9024, and expected heterozygosity is 0.9634 in Jiangsu-Zhejiang-Shanghai Han population.Conclusion The HLA-DRB1 distribution of Jiangsu-Zhejiang-Shanghai Han population shares some genetic characteristic with other Han populations, but it exhibits its own characteristic, suggesting the intermediate state of this population between the southern and northern Han populations. The polymorphism of HLA-DRB1 of Jiangsu-Zhejiang-Shanghai Han population is the most abundant one in this study.