这条TGFβ→TAK1→LATS→YAP1路径调节了YAP1的时空动态
Min-Kyu Kim1,2, Sang-Hyun Han1,2, Tae-Geun Park1
1Department of Biochemistry, College of Medicine and Institute for Tumour Research, Chungbuk National University, Cheongju 28644, Korea.
Molecules and cells
|September 14, 2023
概括
转化生长因子β (TGFβ) 通过TAK1激活Hippo通路,导致YAP1酸化和核复合体形成. 这种新发现的TGFβ-TAK1-LATS1/2-YAP1级联调节细胞反应,并且在癌症中经常受到干扰.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
背景情况:
- 河马酶级联通过控制YAP1 (Yes-associated protein 1) 活性来调节细胞反应.
- 通过Hippo通路将细胞外信号转化为细胞内反应的精确机制尚未完全理解.
研究的目的:
- 阐明转化生长因子β (TGFβ) 信号与Hippo通路集成的机制.
- 确定YAP1酸化在TGFβ介导的细胞反应中的新型作用.
主要方法:
- 研究了TGFβ信号组件与Hippo路径激酶之间的相互作用.
- 利用生物化学分析和细胞局部化研究来追踪YAP1的动态.
- 分析了涉及YAP1及其结合伙伴的蛋白质复合物的形成.
主要成果:
- 被TGFβ激活的TAK1酸化并激活LATS1/2,后者随后酸化YAP1.
- 酸化YAP1 (p-YAP1) 与RUNX3形成复合体,在细胞质输出之前激活核中的基因.
- 在TGFβ信号减弱后,非酸化YAP1与核中的TEAD4,SMAD3,AP1和p300形成一个独特的复合体.
- 在癌细胞中,TGFβ对YAP1的动态调节经常受到损害.
结论:
- 确定了一种新的信号级联,集成TGFβ和Hippo通路:TGFβ→TAK1→LATS1/2→YAP1.
- 证明了化YAP1在核中的动态的时空作用.
- 突出了癌症中这种途径的破坏,表明了潜在的治疗点.
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