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Updated: Jul 19, 2025

Characterize Disease-related Mutants of RAF Family Kinases by Using a Set of Practical and Feasible Methods

Characterize Disease-related Mutants of RAF Family Kinases by Using a Set of Practical and Feasible Methods

Published on: July 17, 2019

Raf1促进了人类细胞巨乳病毒的成功复制,并且在感染期间通过AMPK介导的酸化来调节

Diana M Dunn¹, Ludia J Pack¹, Joshua C Munger¹

¹Department of Biochemistry and Biophysics, University of Rochester, Rochester, NY, USA.

bioRxiv : the preprint server for biology

|August 7, 2023

概括

人类细胞巨乳病毒 (HCMV) 感染通过AMP激活蛋白激酶 (AMPK) 激活Raf1信号,促进病毒复制. 抑制Raf1有效地阻止了HCMV的传播,这表明Raf1是一个新的治疗点.

科学领域:

病毒学病毒学
分子生物学分子生物学
细胞信号传递细胞信号传递

背景情况:

人类细胞巨乳病毒 (HCMV) 感染对免疫功能低下的个体构成重大威胁,目前的治疗方法不足于最佳.
Raf1激酶是基因激活蛋白激酶 (MAPK) 级联的组成部分,涉及生长因子信号传导和病毒感染,但其在HCMV中的特定作用尚不清楚.
AMP激活蛋白激酶 (AMPK) 调节了Raf1的活性,并且已知它参与了HCMV的复制.

研究的目的:

研究HCMV感染,AMPK和Raf1活动之间的关系.
为了确定调节Raf1对HCMV复制和传播的影响.

主要方法:

分析HCMV诱导的Raf1酸化变化,特别是AMPK调节的Ser621部位.
评估化Raf1与14-3-3蛋白之间的相互作用.
使用药理抑制剂和基因向 (shRNA,CRISPR) 来抑制Raf1的功能.
评估Raf1抑制对病毒复制和传播在纤维细胞和上皮细胞中的影响.

主要成果:

HCMV感染诱导Raf1在Ser621的特定AMPK依赖酸化,增强其与14-3-3的结合,并促进Raf1的激活.
通过各种方法抑制Raf1,显著减少了HCMV复制和细胞间传播.
由HCMV感染引起的AMPK激活,有助于调节对病毒复制至关重要的Raf1活动.

结论:

冠状病毒感染通过AMPK依赖的酸化调节Raf1活动,这对于病毒复制至关重要.
向Raf1代表了一种有前途的治疗策略来对抗HCMV感染.

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