在怀孕的中国妇女中研究HLA-II基因多态和RhE合免疫之间的相关性
Wenling Shang1, Guojin Ou1,2, Xin Ji3,4
1Department of Laboratory Medicine, West China Second University Hospital, Sichuan University, No. 20, Section 3, Ren Min Nan Lu, Chengdu, 610041 Sichuan China.
概括
人类白细胞抗原 (HLA) -II基因变异与中国孕妇的RhE配免疫有关. 这种HLA-DRB1*09:01-DQA1*03:02-DQB1*03:03的原型可能会增加抗E抗体的形成.
科学领域:
- 免疫遗传学 免疫遗传学
- 血型血清学 血型血清学
背景情况:
- rhesus (Rh) 血型系统是复杂的,在怀孕期间可以发生RhE合免疫.
- 反-E抗体是常见的 alloantibodies,它们与人类白细胞抗原 (HLA) -II基因多态性相关,需要进行调查.
研究的目的:
- 在中国孕妇中调查HLA-II基因多态和RhE合免疫之间的相关性.
- 分析潜在抗原呈现的结构基础.
主要方法:
- 使用下一代测序对抗E阳性和抗E阴性孕妇进行HLA-II基因型鉴定.
- 使用NetMHCpan软件进行-HLA结合预测.
- 使用AlphaFold进行主要基因相容综合体 (MHC) 相互作用的结构分析.
主要成果:
- 在HLA-DRB1*09:01-DQA1*03:02-DQB1*03:03哈普类型和抗E合免疫之间发现了显著的积极关联.
- 预测E衍生的 (219FWPSVNSPL227) 将与HLA-DRB1*09:01分子结合.
- 在HLA-DRB1*09:01和RhE之间确定了一种特定的键相互作用.
结论:
- 特定的HLA-II单元型与来自中国四川省的孕妇的allo-anti-E抗体的发展有关.
- HLA-DRB1*09:01-DQA1*03:02-DQB1*03:03表型可能使个体倾向于形成抗E allo抗体.
- HLA-DRB1*09:01分子似乎在RhE共免疫中发挥着至关重要的作用.
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