SARS-CoV-2 NSP13与TEAD相互作用,以抑制Hippo-YAP信号传递
Fansen Meng1, Jong Hwan Kim2, Chang-Ru Tsai3
1McGill Gene Editing Lab, The Texas Heart Institute, Houston, United States.
eLife
|September 23, 2025
概括
严重急性呼吸道综合征冠状病毒2 (SARS-CoV-2) 非结构蛋白13 (NSP13) 抑制YAP/TEAD介导的基因表达,影响器官发育. 这种病毒蛋白干扰Hippo-YAP通路,独立于上游激酶.
科学领域:
- 分子生物学分子生物学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- 河马通路调节YAP/TEAD基因表达,对器官发育和恒温至关重要.
- 在病毒感染中观察到Hippo-YAP通路的功能障碍,但其在SARS-CoV-2中的作用尚不清楚.
研究的目的:
- 为了研究SARS-CoV-2感染对人类细胞中Hippo-YAP通路的影响.
- 为了确定调节YAP/TEAD转录活性的特定SARS-CoV-2蛋白质.
主要方法:
- 从SARS-CoV-2感染的人类心肌细胞和肺样本中分析RNA测序数据.
- 查SARS-CoV-2非结构性蛋白质对它们对YAP活动的影响.
- 通过HEK293T细胞和体内小鼠模型的突变分析,研究NSP13酶活性及其与YAP/TEAD复合物的相互作用.
主要成果:
- 感染SARS-CoV-2导致YAP目标基因表达的降低.
- 鉴定出SARS-CoV-2非结构蛋白13 (NSP13) 是YAP转录活性的抑制剂,独立于LATS1/2激酶.
- NSP13的螺旋酶活性对于抑制YAP交换活化至关重要,这涉及染色质重塑和招募TTF2到YAP/TEAD复合体.
结论:
- SARS-CoV-2 NSP13通过其酶功能直接抑制YAP/TEAD转录活动.
- NSP13通过重塑色素和招募TTF2来破坏Hippo-YAP通路,揭示了一个新的调节机制.
- 这些发现为SARS-CoV-2如何干扰对器官功能至关重要的宿主细胞通路提供了分子洞察力.
关键词:
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