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在SARS-COV-2中,蛋白质NSP9通过向TBK1来促进细胞因子的产生
Yihua Zhang1, Bowen Xin1, Yinan Liu1
1Department of Immunology, School of Basic Medical Sciences, Shanghai Institute of Infectious Disease and Biosecurity & Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.
Frontiers in immunology
|October 19, 2023
概括
通过激活TBK1,SARS-CoV-2蛋白NSP9通过激活TBK1触发细胞因子风暴,导致组织损伤和死亡. 抑制NSP9降解提供了一个潜在的COVID-19治疗策略.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 来自SARS-CoV-2感染的细胞因子风暴会导致严重的组织损伤和死亡.
- 通过SARS-CoV-2诱导细胞因子风暴的精确分子机制仍然不完全理解.
研究的目的:
- 为了阐明SARS-CoV-2诱导的细胞因子风暴的机制.
- 为了确定COVID-19的潜在治疗点.
主要方法:
- 研究了SARS-CoV-2蛋白NSP9和TANK结合激酶-1 (TBK1) 之间的相互作用.
- 在小鼠中使用了rVSV-NSP9病毒感染模型.
- 分析了蛋白质的泛化,酸化和转位通路.
主要成果:
- SARS-CoV-2 NSP9直接与TBK1相互作用并激活TBK1,促进细胞因子的产生.
- NSP9诱导TBK1的K63相关的泛化和化,导致IRF3的激活和细胞因子的释放.
- E3酶MID1针对NSP9进行降解,但SARS-CoV-2感染破坏了这种相互作用,稳定了NSP9.9.
结论:
- 通过TBK1激活,SARS-CoV-2蛋白质NSP9是细胞因子风暴的关键驱动因素.
- 破坏NSP9-TBK1相互作用或增强NSP9降解是COVID-19潜在的治疗策略.
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