USP12通过使IFI16脱和稳定促进抗病毒反应
Yuling Fu1, Xiaoxia Zhan2, Xiaolong You3
1Institute of Biotherapy, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China.
PLoS pathogens
|July 6, 2023
概括
乌比基特异蛋白酶12 (USP12) 对于抗病毒免疫非常重要. USP12稳定了DNA传感器IFI16,增强了对HSV-1等病毒感染的免疫反应.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 病毒学 病毒学
背景情况:
- 脱化酶 (DUBs) 是先天性抗病毒免疫的关键调节者.
- 干扰素-诱导蛋白16 (IFI16) 是一个关键的DNA传感器,通过STING/TBK-1/IRF3通路参与抗病毒信号传输.
- 特定的DUBs,如Ubiquitin特定蛋白酶12 (USP12) 在调节核酸传感器介导的抗病毒反应中的作用仍然在很大程度上未被探索.
研究的目的:
- 在DNA传感器信号和抗病毒免疫的背景下研究USP12的功能.
- 阐明USP12影响IFI16介导的抗病毒反应对病毒感染,特别是HSV-1的机制.
主要方法:
- 利用基因淘汰和淘汰技术来评估USP12功能.
- 在HSV-1感染后测量了抗病毒细胞因子 (IFN-β,CCL-5,IL-6) 和干扰素刺激基因 (ISG) 的表达.
- 在USP12缺乏细胞中评估病毒复制和宿主对HSV-1的敏感性.
- 研究了USP12对IFI16蛋白稳定性和降解途径的影响.
主要成果:
- 淘汰或淘汰USP12显著损害HSV-1诱导的IFN-β,CCL-5,IL-6和ISGs的表达.
- USP12缺乏导致HSV-1复制增加,并增加宿主对HSV-1感染的易感性.
- 从机制上来说,USP12通过其二维基基因酶活性来抑制IFI16的蛋白酶依赖性降解.
- USP12保持IFI16的稳定性,从而促进IFI16-STING-IRF3和p65介导的抗病毒信号传输.
结论:
- USP12在DNA感知信号通路和先天抗病毒反应中起着至关重要的作用.
- USP12稳定IFI16,一个关键的DNA传感器,从而增强抗病毒免疫反应对像HSV-1这样的病毒病原体.
- 这些发现凸显了杜比基在调节先天性抗病毒免疫力方面的重要性,并将USP12确定为潜在的治疗标.
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