蛋白质体应激通过RAP2-MAP4Ks-LATS1/2通路激活YAP/TAZ,以及其在固体瘤中的治疗影响
Xin Wang1, Yuan Gu1,2, Zhenxing Zhong1
1Institute of Pediatrics, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai 200032, China.
概括
由于Hippo路径激活,蛋白质酶抑制剂在固体瘤中受到限制. 阻断对相关蛋白 (YAP) /TAZ克服了这种抵抗,为侵袭性癌症提供了一种新的组合治疗策略.
科学领域:
- 在瘤学瘤学.
- 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:
- 蛋白质酶抑制剂在血液癌症中是有效的,但不是固体瘤.
- 癌症中药物耐药性通常与对相关蛋白 (YAP) /TAZ的激活有关,这是Hippo通路的关键效应者.
- 固体瘤中蛋白酶体抑制剂耐药性的确切机制尚不清楚.
研究的目的:
- 研究蛋白质酶应激在激活固体瘤细胞中的Hippo通路中的作用.
- 阐明信号级联,将蛋白酶体抑制与YAP/TAZ激活联系起来.
- 评估结合蛋白酶体抑制剂与YAP/TAZ抑制在固体瘤中的治疗潜力.
主要方法:
- 在固体瘤细胞中利用蛋白质酶抑制来诱导蛋白质酶应激.
- 研究了在蛋白质酶抑制时RAP2的泛化和无活化.
- 分析了RAP2-MAP4Ks-NF2-LATS1/2信号通路的破坏.
- 评估了YAP/TAZ激活对细胞存活率和耐药性的影响.
- 在扩散型胃癌模型中评估了联合蛋白酶和YAP/TAZ抑制的疗效.
主要成果:
- 蛋白质酶应激被确定为一个上游信号,激活固体瘤细胞中的Hippo通路.
- 蛋白质酶抑制导致RAP2的无化和失活,破坏了RAP2-MAP4Ks-NF2-LATS1/2通路.
- 这种干扰导致了YAP/TAZ的激活,促进了细胞存活和对蛋白酶体抑制剂的抵抗.
- 抑制YAP/TAZ恢复了癌细胞对蛋白酶体抑制剂的敏感性.
- 联合抑制蛋白酶和YAP/TAZ有效地抑制了扩散型胃癌的瘤生长.
结论:
- 蛋白质酶应激是固体瘤中河马通路的上游激活剂.
- 在固体瘤中,YAP/TAZ激活介导了对蛋白酶体抑制剂的抗性.
- 针对YAP/TAZ与蛋白酶体抑制剂结合,为固体瘤,包括扩散型胃癌提供了一个有前途的治疗策略.
关键词:
河马的路径 河马的路径哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈药物重用是为了改变药物的用途.蛋白质酶体蛋白质组是什么固体瘤是一个固体瘤.更多相关视频
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