协同调节作用于基质硬度诱导的 HCC 侵袭伪足形成。
A synergistic regulation works in matrix stiffness-driven invadopodia formation in HCC.
机构信息
Liver 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.
Department of Oncology, Zhongshan Hospital, Fudan University, Shanghai, 200032, PR China.
出版信息
Cancer Lett. 2024 Feb 1;582:216597. doi: 10.1016/j.canlet.2023.216597. Epub 2023 Dec 23.
Growing evidence has suggested that increased matrix stiffness can significantly strengthen the malignant characteristics of hepatocellular carcinoma (HCC) cells. However, whether and how increased matrix stiffness regulates the formation of invadopodia in HCC cells remain largely unknown. In the study, we developed different experimental systems in vitro and in vivo to explore the effects of matrix stiffness on the formation of invadopodia and its relevant molecular mechanism. Our results demonstrated that increased matrix stiffness remarkably augmented the migration and invasion abilities of HCC cells, upregulated the expressions of invadopodia-associated genes and enhanced the number of invadopodia. Two regulatory pathways contribute to matrix stiffness-driven invadopodia formation together in HCC cells, including direct triggering invadopodia formation through activating integrin β1 or Piezo1/ FAK/Src/Arg/cortactin pathway, and indirect stimulating invadopodia formation through improving EGF production to activate EGFR/Src/Arg/cortactin pathway. Src was identified as the common hub molecule of two synergistic regulatory pathways. Simultaneously, activation of integrin β1/RhoA/ROCK1/MLC2 and Piezo1/Ca/MLCK/MLC2 pathways mediate matrix stiffness-reinforced cell migration. This study uncovers a new mechanism by which mechanosensory pathway and biochemical signal pathway synergistically regulate the formation of invadopodia in HCC cells.
越来越多的证据表明,基质硬度的增加可以显著增强肝癌(HCC)细胞的恶性特征。然而,基质硬度是否以及如何调节 HCC 细胞侵袭伪足的形成在很大程度上仍然未知。在这项研究中,我们开发了不同的体外和体内实验系统,以探讨基质硬度对侵袭伪足形成的影响及其相关的分子机制。我们的结果表明,基质硬度的增加显著增强了 HCC 细胞的迁移和侵袭能力,上调了侵袭伪足相关基因的表达,并增加了侵袭伪足的数量。两种调控途径共同作用于 HCC 细胞中的基质硬度驱动的侵袭伪足形成,包括通过激活整合素β1或 Piezo1/FAK/Src/Arg/cortactin 途径直接触发侵袭伪足形成,以及通过提高 EGF 产生间接刺激侵袭伪足形成来激活 EGFR/Src/Arg/cortactin 途径。Src 被鉴定为两种协同调控途径的共同枢纽分子。同时,整合素β1/RhoA/ROCK1/MLC2 和 Piezo1/Ca/MLCK/MLC2 途径的激活介导了基质硬度增强的细胞迁移。这项研究揭示了机械感觉途径和生化信号途径协同调节 HCC 细胞侵袭伪足形成的新机制。