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湖南北部汉族人群MICA/B基因多态性研究 被引量:1

Study on MICA/B gene polymorphism in northern Hunan Han population
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摘要 目的研究MICA/B等位基因在湖南北部汉族人群中的分布特点。方法采用PCR-SSP(PCR-sequence-specific primers)方法和PCR-SBT(PCR-sequence-based typing)方法对95名无亲缘关系的个体进行MICA/B基因分型。结果在湖南北部汉族人群中共检测到11个MICA等位基因,频率最高的依次为MICA*010(28.95%)、MICA*008:01(20.53%)和MICA*002:01(15.79%);共检测到5种STR(short tandem repeat)型别,其中MICA*A5(37.89%)和MICA*A5.1(21.05%)频率最高。在湖南北部汉族人群中共检测到10个MICB等位基因,以MICB*005:02/010最常见(58.42%),其他较常见的等位基因有MICB*002:01(10.00%)、MICB*008(7.89%)。在湖南北部汉族人群中,单倍型MICA*004-MICB*004:01与MICA*010-MICB%005:02/010具有显著的连锁不平衡。将MICA/B基因在湖南北部汉族人群中的分布与该基因在其他人群中的分布进行比较,显示MICA/B基因的分布在不同人群之间存在差异。结论湖南北部汉族人群有自己独特的分布特征。 Objective To study on the characterization of MICA/B genetic polymorphism in a northern Chinese Hunan Han population. Methods Ninty-five unrelated individuals were involved in this study and MICA/B genotypes were determined by two methods: PCR-sequence-specific primers (PCR-SSP) and PCR-sequence-based typing (PCR-SBT). Results In northern Hunan Han population, eleven MICA alleles were found, among which MICA * 010 (28.95%), MICA * 008 : 01 (20.53%) and MICA * 002 : 01 (15.79%) were the common alleles. Five MICA-STR( short tandem repeat) alleles were found, among which MICA * A5 (37.89%) and MICA * AS. 1 (21.05%) predominated. In this population, ten MICB alleles were found. The common alleles were MICB * 005 : 02/* 010 (58.42%) , MICB * 002 : 01 ( 10.00% ), and MICB * 008 (7.89%). Two kinds of MICA-MICB haplotypes were MICA * 004- MICB * 004 : 01 and MICA * 010-MICB * 005 : 02/010 in significant linkage disequilibrium. This study also showed MICA/B gene with high polymorphism in different populations. Conclusion MICA/B alleles distri- bution in northern Hunan Han population with its unique characteristics.
出处 《中华微生物学和免疫学杂志》 CAS CSCD 北大核心 2012年第9期785-791,共7页 Chinese Journal of Microbiology and Immunology
基金 国家自然科学基金资助项目(30870135)
关键词 HLA MICA B PCR-SBT PCR—SSP 湖南汉族人 基因多态性 HLA MICA/B PCR-SBT PCR-SSP Hunan Han population Gene polymorphism
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