OAS1和OAS3基因变异增强了对SARS-CoV-2的炎症反应
Marta L DeDiego1, Raúl López-Fernández-Sobrino1, Jordi Pedragosa2,3
1Department of Molecular and Cell Biology, National Center for Biotechnology (CNB-CSIC), Campus Universidad Autónoma de Madrid, Madrid, Spain.
iScience
|December 24, 2025
概括
常见的OAS1基因变异通过影响病毒控制来影响COVID-19的严重程度. 罕见的OAS变种可能会影响成人的炎症,但不会影响成人的呼吸道疾病.
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:
- 2',5'-oligoadenylate synthetase (OAS) 和RNase L的缺陷与儿科SARS-CoV-2炎症有关.
- 在成人COVID-19呼吸道疾病中OAS的作用尚不清楚.
研究的目的:
- 调查OAS1/OAS3变种与成人COVID-19严重程度的关联.
- 评估OAS变异对病毒复制和炎症的功能影响.
主要方法:
- 在342名COVID-19患者中分析了罕见的OAS1/OAS3变体和常见的OAS1rs10774671多态性.
- 在细胞系统和Oas3缺乏的小鼠中进行功能性测试,以评估酶活性,RNase L激活,病毒控制和炎症反应.
主要成果:
- 罕见的异质合体OAS变体影响了RNase L激活,但与肺炎无关.
- 常见的OAS1 rs10774671 A/A基因型 (OAS1-p42异型) 与严重的COVID-19和较差的病毒控制相关.
- OAS3和OAS1-p46异型表现出抗病毒和抗炎作用;Oas3缺乏的小鼠表现出高水平的细胞因子.
结论:
- 常见的OAS1变异,特别是rs10774671多态变异,会影响成年人的COVID-19严重程度.
- 罕见的OAS变种可能会调节炎症反应,而不是直接导致COVID-19的呼吸道病理.
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