广东地区汉族正常人群HLA-E基因多态性研究

为了检测广东地区汉族正常人群HLA—E基N的多态性，并分析HLA—E与典型HLA—Ⅰ类(Ia)位点之间的连锁关系，采用PCR—SSP方法检测广东地区150个无血缘相关的正常人的HLA—E基N型，同时用NIH标准微量淋巴细胞毒方法检测其中106人HLA—A，一B基N型，对HLA—E与HLA—A，-B位点之间作连锁分析。结果发现，在广东地区汉族正常人群中共检出3个HLA—E等位基N：HLA—E*0101，HLA—E*01031，HLA—E*01032，其基N频率分别为45．33％，32．33％，22．33％。未检出E*0102和E*0104。HLA—E与HLA—A，-B位点之间B15／*E01032及A2／E*01032存在连锁不平衡，除此之外其他任何两位点之间不存在连锁不平衡。结论：HLA—E高度保守的多态性提示其生物学特性可能有别于HLA—Ia分子。

Analysis on HLA-E Polymorphism in Guangdong Han Population

To investigate the distribution of HLA-E alleles and linkage between HLA-E and HLA-A or -B loci in Chinese Han in Guangdong area, HLA-E alleles were detected by using PCR-SSP in 150 unrelated healthy individuals from Guangzhou area; HLA-A, -B antigens typing in 106 individuals was carried out with NIH standard microlymphocytoxic method. Analysis of linkage was performed between HLA-E and HLA-A, -B. The results showed that three alleles of HLA-E could be detected in this population. They are E * 0101, E * 01031, E * 01032, with the frequency of 45.33%, 32.33%, 22.33% respectively. No E * 0102 and E * 0104 could be detected in all of these individuals. The analysis of linkage on two loci between HLA-E and HLA-A or -B showed that no significant difference could be found between expected frequencies and observed frequencies except B15/E * 01032 and A2/E * 01032. In conclusion, the high conservative polymorphism of HLA-E suggests that it's biological characteristic is different from that of classical HLA class Ia molecules.