一个协同调节在HCC的矩阵刚性驱动的入侵形成中起作用
Xi Zhang1, Yingying Zhao1, Miao Li1
1Liver Cancer Institute, Zhongshan Hospital, Fudan University & Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, 180 Feng Lin Road, Shanghai, 200032, PR China.
增加的矩阵刚度通过促进invadopodia形成来增强肝细胞癌 (HCC) 细胞入侵. 这通过结合的机械和生化信号通路发生,揭示了HCC进展中的新型调节机制.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 在瘤学瘤学.
背景情况:
- 增加的矩阵刚度与肝细胞癌 (HCC) 中恶性特征的增强有关.
- 矩阵刚度影响HCC中侵入形成的精确机制在很大程度上仍未被探索.
研究的目的:
- 为了研究矩阵刚度对HCC细胞中侵入形成的影响.
- 阐明 HCC.中由矩阵刚性驱动的入侵形成和细胞迁移背后的分子机制.
主要方法:
- 开发体外和体内实验系统,以评估矩阵刚性的影响.
- 对入侵的形成,基因表达和细胞迁移/入侵的分析.
- 研究关键信号通路,包括整蛋白,Piezo1,FAK,Src,Arg,皮质素,EGFR和RhoA.
主要成果:
- 增加的矩阵刚度显著增加了HCC细胞迁移和入侵.
- 矩阵刚度上调了与入侵相关的基因,并增加了入侵数量.
- 确定了两个协同作用的途径 (整体蛋白β1/Piezo1/FAK/Src/Arg/cortactin和EGF/EGFR/Src/Arg/cortactin),其中Src是共同的枢纽.
- 机械感知通路 (整体蛋白β1/RhoA/ROCK1/MLC2和Piezo1/Ca2+/MLCK/MLC2) 介导着矩阵刚性增强的细胞迁移.
结论:
- 矩阵刚度在促进侵入形成和增强HCC细胞恶性瘤方面发挥着至关重要的作用.
- 一种涉及协同机械传感和生化信号通路的新机制调节了HCC中的侵入形成.
- 了解这些途径为HCC治疗提供了潜在的治疗点.
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