与自相关的基因RB1CC1/FIP200中的有害变异会降低对SARS-CoV-2的免疫力
Lili Hu1,2, Renee M van der Sluis1,2, Kennith Brian Castelino1
1Department of Biomedicine, Aarhus University, Aarhus, Denmark.
Nature communications
|November 27, 2025
概括
编码FIP200蛋白质的RB1CC1中的罕见变异与关键的COVID-19有关. 缺乏FIP200会损害一种新的途径,这种途径可以降解SARS-CoV-2,而不依赖于I型干扰素.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- COVID-19的严重程度各不相同,I型干扰素缺乏症与严重病例有关.
- 编码FIP200的RB1CC1基因变异被研究在患有严重COVID-19的患者中.
研究的目的:
- 调查FIP200在SARS-CoV-2感染和COVID-19病变发生中的作用.
- 确定涉及FIP200的抗病毒机制.
主要方法:
- 对患有严重COVID-19和RB1CC1变种的患者的分析.
- 在气道上皮细胞和细胞系中对FIP200进行基因操纵.
- 评估SARS-CoV-2复制和自流的情况.
- 调查FIP200与NDP52的相互作用及其在病毒降解途径中的作用.
主要成果:
- 两名患有严重COVID-19的非亲属男性患者患有罕见的有害RB1CC1变体.
- 缺乏FIP200的细胞和患有患者变异的细胞显示SARS-CoV-2复制增加和自流失.
- FIP200通过一种新的,非正规的途径调解SARS-CoV-2降解,涉及NDP52和溶酶体降解,独立于正规的自和I型IFN.
结论:
- 一个依赖于FIP200和NDP52的细胞自主抗病毒途径限制了SARS-CoV-2.
- 这一途径独立于正规的自和I型IFN,准病毒在酸性囊泡中降解.
- 这种FIP200依赖途径的损伤可能会导致严重的COVID-19肺炎.
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