使用基于纳米的亲和力净化-质谱法进行TAZ互动原子分析
Jonathan Kelebeev1,2,3, Anastasia MacKeracher1,2,3, Tetsuaki Miyake1,2,3
1Department of Biology, York University, Toronto, ON, M3J 1P3, Canada.
Journal of cell science
|February 3, 2025
概括
这项研究引入了一种基于纳米体的方法来识别蛋白质相互作用,揭示了Hippo信号通路的新调节者,包括影响肌肉细胞TAZ功能的CARM1.
科学领域:
- 分子生物学分子生物学
- 蛋白质组学是指蛋白质组学.
- 细胞信号传递 细胞信号传递
背景情况:
- 了解蛋白质与蛋白质相互作用 (PPI) 在后基因组时代至关重要.
- 河马信号通路调节器TAZ (WWTR1) 具有由其相互作用体影响的上下文依赖功能.
- 识别TAZ相互作用体是理解其在条纹肌肉细胞中的作用的关键.
研究的目的:
- 开发和应用基于纳米体的亲和力净化 (AP) 与LC-MS/MS方法相结合,用于无偏的蛋白质选.
- 在条纹肌肉细胞中识别TAZ的蛋白互动组.
- 阐明已识别的TAZ蛋白相互作用的功能后果,特别是与CARM1.
主要方法:
- 使用基于GFP纳米的亲和力净化 (AP) 进行TAZ互动原子捕获.
- 采用液体染色学和双重质谱法 (LC-MS/MS) 来识别蛋白质.
- 进行了Hippo通路记者基因 (HOP/HIP) 测定和质谱 (MS) 分析,以调查CARM1-TAZ相互作用.
主要成果:
- 成功确定了已知和新型TAZ互动原子组件的全面清单.
- TAZ互动组包括Hippo通路组件和表观遗传调节器 (NuRD,FACT,SWI/SNF复合体,CARM1).
- 通过促进TAZ Ser89的酸化和细胞质封存,CARM1抑制TAZ活性,TAZ在Arg77.7的CARM1依赖性二甲基化介导.
结论:
- 基于纳米体的AP与LC-MS/MS相结合,是一种强大且普遍适用于互动原子分析的方法.
- CARM1 是TAZ功能在条纹肌肉细胞中的新型调节者,影响转录活动和局部化.
- 这项研究为控制TAZ功能和河马信号通路的分子机制提供了新的见解.
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