机构地区:[1]广东省深圳市血液中心组织配型与免疫遗传研究室,518035
出 处:《中华医学遗传学杂志》2009年第4期379-382,共4页Chinese Journal of Medical Genetics
基 金:广东省科技计划项目(20088030301278);广东省医学科研基金(A2008622);深圳市科技计划项目(200802117)
摘 要:目的研究中国南方和北方汉族人群人类白细胞抗原(human leukocyte antigens,HLA)-DRB1*14组等位基因的分布并比较其分布差异。方法采用聚合酶链反应(polymerase chain reaction,PCR)-测序分型(sequence-based—typing,SBT)技术对从436名南方和713名北方汉族造血干细胞志愿捐献者进行HLA—DRB1分型,并采用高分辨PCR序列特异性引物(sequence specific primer,SSP)技术对其中的DRB1*1401/1439/1454不确定的等位基因进行精确分型,同时对54名原检测结果为“DRB1*1401”的临床移植配型标本进行再次分型。进而采用卡方检验方法对南北方汉族群体的DRB1*14等位基因分布进行比较。结果81个DRB1*1401/1439/1454不确定等位基因和54例原结果为“DRB1*1401”的临床标本全部证实为DRB1*1454。436名南方汉族人群中,可见6种DRB1*14等位基因,其分布比例分别为DRB11454(69.57%),DRB1*1402(1.45%),DRB1*1403(1.45%),DRB1*1404(4.35%),DRB1*1405(20.29%),DRB1*1407(2.90%);713名北方汉族中,7种DRB1*14等位基因的分布比例分别为DRB1*1454(35.48%),DRB1*1403(12.90%),DRB1*1404(6.45%),DRB1*1405(37.63%),DRB1*1407(4.30%),DRB1*1411(1.08%),DRB1*1412(2.15%)。结论中国汉族人群中的主要等位基因是DRB1*1454和DRB1*1405,南北汉族间DRB1*14等位基因的分布格局明显不同,DRB1*1405在两个群体中的分布比例比较接近,而DRB1*1454在南方汉族中的分布比例明显高于北方汉族。Objective To investigate and compare the distribution of HLA-DRB1 * 14 alleles between the southern and northern Chinese Han populations. Methods Human leukocyte antigen (HLA)-DRB1 alleles of 436 southern and 713 northern Chinese Han bone marrow volunteers were genotyped by polymerase chain reaction (PCR)-sequence-based-typing (SBT) method, among them the DRB1 * 1401/ 1439/1454 ambiguous allele pairs were identified using DRB1 * 14 high-resolution PCR-sequence specific primer (SSP) kits. Also, the clinic samples previously reported as DRB1 * 1401 were reenotyped using the same PCR-SSP kits. The allelic distribution of DRB1 * 14 in southern and northern Chinese Han population were compared by chi-square test method. Results Eighty-one ambiguous allele pairs of DRB1 1401/1439/1454 and 54 clinic samples previously reported as DRB1 * 1401 were all identified as DRB1 * 1454. Among the 436 Southern Han donors,six subtypes of DRB1 * 14 allele were observed including DRB1 * 1454 (69.57%), DRB1 * 1402 (1.45%), DRB1 * 1403 (1.45%), DRB1 * 1404 (4.35%), DRB1 * 1405 (20.29%) and DRB1* 1407 (2.90%). In the 713 northern Han donors, a total of seven subtypes were observed including DRB1 * 1454(35.48%), DRB1 * 1403(12.90%), DRB1 * 1404(6. 45%), DRB1 * 1405 (37.63%), DRB1*1407(4.30%), DRB1* 1411 (1.08%) and DRB1*1412(2. 15%). Conclusion DRB1 * 1454 and DRB1 * 1405 were the most common alleles of HLA DRB1 * 14 in Chinese Han populations. The distribution of HLA-DRB1 * 14 differ significantly between the southern and northern Chinese Han population, while DRB1 * 1405 showed similar distribution pattern in the two populations but DRB1 * 1454 had higher frequency in southern than in northern Chinese Han population.
关 键 词:人类白细胞抗原 DRB1*1454等位基因 中国汉族
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