HLA-DRB1*07,13等位基因对乙肝疫苗免疫效果影响的研究

摘要

Objective:To investigate the effect of HLA-DRB1*07,13 allelic genes on the immune response to hepatitis B vaccination.Methods:896 healthy college students of Han nationality from Guangxi province,who had received standard courses of vaccination with recombinant hepatitis B virus vaccine,were tested the level of anti-HBs with ELISA method at the sixth month after their last vaccination.The non- or hypo-responders were selected to receive another 20 μg doses of recombinant vaccine and were examined anti-HBs once more four weeks later.99 non- or hypo-responders and 136 medium or hyper-responders were selected for the study subjects.HLA-DRB1*07,13 allelic genes of the subjects were detected by polymerase chain reaction using sequence specific primer (PCR-SSP) method.Results:The frequencies of HLA-DRB1*07 gene in the non- or hypo-responders group were significantly higher than that in the medium or hyper-responder group (16.16% vs 4.41%,P＜0.05). No significant difference of HLA-DRB1*13 gene between the two groups (1.01% vs 3.68%,P=0.389).Conclusion:There is a close relationship between the expression of HLA-DRB1*07 gene and the non- or hypo-response to HB vaccine;No relationship between HLA-DRB1*13 gene expression and the response to HB vaccine is found.%目的:探讨机体HLA-DRB1*07,13等位基因对基因重组乙肝疫苗免疫效果的影响.方法:选取完成基因重组乙肝疫苗全程接种(10 μg/次,0、1、6月)的广西籍汉族健康大学生896名,于末次接种疫苗后的第6个月采血检测血清抗-HBs水平,对无或低应答者再次接种基因重组乙肝疫苗20 μg,4周后筛选出无或低应答者99名及初次检测中或强应答者136名作为研究对象,应用PCR-SSP技术对研究对象外周血HLA-DRB1*07,13等位基因进行检测.结果:HLA-DRB107在无或低应答组中的表达频率为16.16%,显著高于中或强应答组的表达频率(4.41%)(P＜0.05);HLA-DRB1*13在无或低应答组和中或强应答组的表达频率分别为1.01%和3.68%,两组比较无统计学差异(P＞0.05).结论:基因重组乙肝疫苗无或低应答与HLA-DRB1*07基因密切相关;而HLA-DRB1*13对乙肝疫苗的免疫应答无明显影响.