在孟加拉国婴儿中使用免疫遗传学准乙型肝炎疫苗逃脱
Guillaume Butler-Laporte1,2,3, Kathryn Auckland1, Zannatun Noor4
1Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom.
medRxiv : the preprint server for health sciences
|July 10, 2023
概括
主体遗传变异,特别是某些人类白细胞抗原 (HLA) 类型,如DPB1*04:01,增强乙型肝炎病毒 (HBV) 疫苗反应. 这一发现可能有助于解决HBV疫苗逃生突变的挑战.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 遗传学 是一个遗传学.
背景情况:
- 乙型肝炎病毒 (HBV) 疫苗逃生突变 (VEM) 对疾病控制工作构成全球威胁.
- 了解宿主基因,疫苗反应和病毒进化之间的相互作用对于对抗HBV至关重要.
研究的目的:
- 调查宿主遗传变异,疫苗免疫性和HBV VEM的出现之间的关系.
- 为了确定与对HBV疫苗的不同反应相关的特定人类白细胞抗原 (HLA) 变异.
主要方法:
- 对1,096名孟加拉儿童队伍的分析,以确定与疫苗抗原反应相关的HLA变异.
- 利用9,448名南亚人组成的HLA归算小组进行关联分析.
- 研究了HBV表面抗原表位体与HLA二元体的结合亲和力.
主要成果:
- HLA变体DPB1*04:01与较高的HBV抗体反应显著相关 (p=4.5×10-30).
- HBV 表面抗原表位体与 DPB1*04:01 二次体的高亲缘关系结合解释了增强的免疫性.
- 这表明HBV表面抗原"a-determinant"区域的进化压力,导致VEM.
结论:
- 主体遗传因素,特别是像DPB1*04:01这样的HLA变体,在HBV疫苗疗效方面发挥着重要作用.
- 鉴定的机制为HBV VEM出现提供了洞察力.
- 优先考虑前S异型HBV疫苗可能是克服HBV疫苗逃避的策略.
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