通过驱动ATM-TBK1酸化信号通路来调解抗病毒效应
Hongyan Sui1, Rosana Wiscovitch-Russo1, Silvia Cachaco1,2
1Laboratory of Human Retrovirology and Immunoinformatics, Frederick National Laboratory, Frederick, MD, United States.
Frontiers in immunology
|December 5, 2025
概括
(Mn) 激活了细胞质中阿塔克西亚-泰朗基切塔西亚突变 (ATM) 激酶,导致TBK1酸化. 这种途径增强了抗病毒细胞因子的产生,并抑制了HIV复制,这表明Mn是潜在的抗病毒疗法.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
背景情况:
- ATAXIA-Telangiectasia突变 (ATM) 是一种核激酶,主要以其在DNA损伤修复中的作用而闻名.
- 以前的研究表明,ATM参与了依赖 (Mn) 的TBK1酸化途径,但机制尚不清楚.
研究的目的:
- 阐明 (Mn) 通过ATM诱导TBK1酸化的机制.
- 调查这种途径在先天性免疫和病毒复制 (特别是HIV) 中的作用.
主要方法:
- 利用多个细胞系,主要的人类巨细胞和T细胞.
- 进行了用Mn的剂量反应实验,并评估了在ATM存在或不存在的情况下的TBK1酸化.
- 进行了免疫沉试验,以分析ATM酸化和TBK1-ATM复合体动态.
主要成果:
- 剂量依赖的Mn诱导TBK1酸化以ATM依赖的方式,主要由细胞质ATM介导.
- 在特定地点,促进了ATM酸化 (Ser1891,Ser1981,Ser2996).
- 在酸化后,TBK1与ATM分离,与抗病毒细胞因子产量增加相关,并抑制了HIV复制.
结论:
- 确定了一个细胞质ATM-TBK1酸化周期,对于调节抗病毒先天免疫力至关重要.
- 证明Mn通过这种途径抑制HIV复制.
- 建议补充Mn作为HIV等病毒感染的潜在治疗策略.
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