mLST8对于冠状病毒复制至关重要,并通过mTORC1通路调节其复制
Yanan Fu1,2, Zhen Fu1,2, Zhelin Su1,2
1State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University , Wuhan, China.
mBio
|June 28, 2023
概括
具有sec-13蛋白8 (mLST8) 的哺乳动物致命性是一种新型宿主因子,对冠状病毒 (CoV) 复制至关重要. 它的枯竭激活了自,抑制了病毒复制,并为广泛的抗病毒药物提供了标.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 冠状病毒 (CoV) 构成重大全球健康威胁,需要了解宿主病毒相互作用的复制.
- 鉴定CoV利用的宿主因素对于开发有效的抗病毒策略至关重要.
- 哺乳动物致死性与sec-13蛋白8 (mLST8) 在CoV复制中的作用以前未被描述.
研究的目的:
- 为了确定新型宿主因子对于冠状病毒复制至关重要.
- 阐明mLST8影响CoV复制的分子机制.
- 探索针对mLST8或相关途径的治疗潜力,以开发广泛的抗病毒药物.
主要方法:
- 利用抑制剂和淘汰赛 (KO) 实验来评估mLST8和mTORC1/mTORC2在CoV复制中的作用.
- 研究了mLST8 KO对下游信号通路的影响,包括ULK1酸化.
- 使用传输电子显微镜可视化mLST8 KO和自细胞激活对病毒复制结构的影响.
主要成果:
- 确定mLST8是CoV复制的关键宿主因子,mTORC1信号是必不可少的.
- mLST8 KO导致ULK1酸化减少,促进自活化和抗病毒复制.
- 无论是mLST8 KO还是自细胞激活,都抑制了双膜囊泡的形成,并抑制了多个CoV的复制.
结论:
- mLST8是一种新型冠状病毒复制的宿主调节剂,通过mTORC1-ULK1-自轴作用.
- 自的激活下游的mLST8耗尽损害了早期的病毒复制,表明一个保存的抗病毒机制.
- 针对mLST8或调节自是一种有前途的策略,用于开发针对Covs的广泛抗病毒疗法.
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