CSNK2通过激活含有FLN-NHL的TRIM蛋白来抑制自
Helene Hoenigsperger1, Lennart Koepke1, Dhiraj Acharya2
1Institute of Molecular Virology, Ulm University Medical Center, Ulm, Baden-Wuerttemberg, Germany.
Autophagy
|November 8, 2023
概括
素激酶2 (CSNK2) 通过酸化三方基因 (TRIM) 蛋白质来抑制自. 准这种CSNK2-TRIM轴会增强自,限制流感和艾滋病毒等病毒感染.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 自对于细胞平衡和免疫力至关重要,但其失调与癌症和神经退行等疾病有关.
- 防止过度自的机制比促进自的机制更难理解.
研究的目的:
- 为了确定限制自的关键调节者.
- 阐明这些调节器运作的分子机制.
- 探索在传染病中针对这一调控轴的治疗潜力.
主要方法:
- 利用药理抑制和siRNA介导的素激酶2 (CSNK2) 的耗尽.
- 通过共免疫沉,研究了CSNK2和三方基因 (TRIM) 蛋白 (TRIM2,TRIM3,TRIM71) 之间的相互作用.
- 评估了CSNK2介导的TRIM3在血清661和ULK1在血清757中的酸化对自流和病毒复制的作用.
主要成果:
- CSNK2被确定为自的负调节者;其抑制增加了细胞系和初级肺细胞中的自流量.
- CSNK2直接酸化TRIM3,这对于抑制自是必不可少的.
- 在CSNK2-TRIM轴 (TRIM2,TRIM3,TRIM71) 中,可以使ULK1-BECN1自启动复合体失活.
- 抑制CSNK2或减少TRIM蛋白质增强了A型流感病毒 (IAV),麻疹病毒 (MeV) 和HIV-1的自依赖性限制.
结论:
- CSNK2-TRIM2, -TRIM3, -TRIM71轴是一个限制自的关键通路.
- 针对这个轴可以在治疗上诱导自.
- 这一策略有可能用于治疗病毒感染和与自失调相关的疾病.
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