HLA-DPB1*13:01与增强的相关,KIR2DS4*001与减少的保护,防止发生严重的COVID-19发展
Ticiana D J Farias1,2, Silvia Brugiapaglia3, Susanna Croci4,5
1Department of Biomedical Informatics, University of Colorado School of Medicine, Aurora, Colorado, USA.
HLA
|October 18, 2023
概括
人类白细胞抗原 (HLA) 和杀手细胞免疫球蛋白类受体 (KIR) 的遗传变异影响COVID-19的严重程度. 特定的HLA和KIR全型与疾病结果有关,影响了先天性和适应性免疫力.
科学领域:
- 免疫遗传学 免疫遗传学
- 传染病免疫学 传染病免疫学
- 人类遗传学 人类遗传学
背景情况:
- 人类免疫反应因人类白细胞抗原 (HLA) 和杀手细胞免疫球蛋白类受体 (KIR) 的多态性而有所不同.
- HLA类I分子作为KIR的配体,调节自然杀手 (NK) 细胞对感染细胞的活性.
研究的目的:
- 调查HLA和KIR遗传变异之间的关联以及COVID-19的严重程度.
- 确定特定的HLA和KIR基因型是否与SARS-CoV-2感染个体的住院风险相关.
主要方法:
- 在403名非住院和1575名住院的SARS-CoV-2患者身上进行了高分辨率的HLA类I和II和KIR基因型鉴定.
- 用对性别和年龄进行调整的物流回归分析来评估关联.
- 对干扰素-α (IFN-α) 的自身抗体在一组住院患者中进行了测试.
主要成果:
- 激活的KIR2DS4*001全型与COVID-19严重程度和住院病例的增加有关 (OR=1.48),在同胞细胞中效果更强 (OR=3.74).
- HLA-DPB1*13:01类型表现出对严重的COVID-19 (OR=0.49) 的保护作用.
- 在患有IFN-α自身抗体的患者中,HLA-C*08:02更频繁,而KIR3DL1*01502在这些患者中缺席.
结论:
- HLA和KIR遗传多态性在确定COVID-19临床结果方面发挥着重要作用.
- 这些遗传因素影响了对SARS-CoV-2感染的先天性和适应性免疫反应.
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