STING-NF-κB信号构建了一个流感溢出障碍
Runxin Ye1, Songdi Wang1, Ying Hu1
1Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
概括
人类STING蛋白质作为防止禽流感A型病毒 (IAV) 传播的屏障. 一些IAV通过突变其M1蛋白来规避这一障碍,从而影响人类细胞中的病毒复制.
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:
- 流感大流行源于禽流感A型病毒 (IAV) 传播给人类.
- 阻止IAV传输的障碍在很大程度上是未知的.
- 循环氨酸单酸-氨酸单酸 (cGMP-AMP) 合成酶 (cGAS) -STING-NF-κB信号通路在天生的免疫力中起作用.
研究的目的:
- 为了确定作为IAV传播障碍的宿主因素.
- 调查STING途径在限制IAV感染中的作用.
- 了解IAVs逃避宿主免疫反应的机制.
主要方法:
- 研究了人类干扰素基因刺激器 (STING) 在限制IAVs中的功能.
- 通过STING分析了核因子 κB (NF-κB) 和NF-κB刺激基因 (NSG) 的激活.
- 在IAV矩阵蛋白1 (M1) 中检查了逃避STING激活的突变.
主要成果:
- 人类的STING被确定为对IAV的传播障碍.
- STING激活NF-κB和下游NSG,包括增长停止和DNA损伤诱导蛋白34 (GADD34),这对于IAV限制至关重要.
- 某些IAV菌株具有突变 (例如,在M1残留115中),允许它们逃避STING激活,从而促进人类呼吸道细胞的复制.
结论:
- 人类STING作为对动物性流感A病毒传播的关键屏障.
- IAV的进化包括逃避宿主STING介导免疫力的机制.
- cGAS-STING-NF-κB通路是理解和打击流感病毒威胁的关键目标.
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