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流体剪切压力介导的上调调节的外体IGF2促进肝细胞癌细胞迁移和转移

Tang Feng¹, Bo Li^2,3, Chunhe Zhang¹

¹Institute of Biomedical Engineering, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University Chengdu 610041, Sichuan, China.

American journal of cancer research

|November 17, 2025

概括

液体剪切应激 (FSS) 增加肝细胞癌 (HCC) 细胞外体释放,通过IGF2信号增强瘤细胞迁移和入侵. 这突出了FSS诱导的外体作为HCC的潜在治疗点.

科学领域:

在瘤学瘤学.
细胞生物学细胞生物学
生物物理学的生物物理.

背景情况:

外体细胞在肝细胞癌 (HCC) 中介细胞间通信.
诸如流体剪切应力 (FSS) 等物理因素对HCC衍生的外体的影响在很大程度上尚未被探索.
了解这些相互作用对于开发新型癌症疗法至关重要.

研究的目的:

调查FSS对HCC细胞外体细胞释放的影响.
通过确定FSS调节的外体对癌症进展产生影响的分子机制.
探索HCC治疗和预防的潜在治疗点.

主要方法:

HCC细胞被暴露在FSS (1.4dyn/cm2) 中.
研究人员量化了外体释放的数量,并分析了蛋白质表达 (Rab27a,Rab7).
定量蛋白质组学确定了外体内差异表达的蛋白质.
西方涂抹和细胞迁移试验被用来验证发现.

主要成果:

通过对HCC细胞中的Rab27a进行上调和对Rab7进行下调,FSS显著增加了外体释放.
来自FSS刺激的HCC细胞的外体促进受体细胞的迁移和入侵.
胰岛素类生长因子2 (IGF2) 被确定为一个关键蛋白质,在FSS刺激的外体中被调节.
外体IGF2激活了受体细胞中的Ras/Raf/Erk信号通路,增强了HCC的迁移和入侵.

结论:

通过IGF2-Ras/Raf/Erk信号通路来促进癌细胞迁移和入侵.
外体IGF2代表了HCC治疗和预防的潜在治疗标.
这项研究揭示了一种新的机制,它将物理刺激与外体介导的癌症进展联系起来.

关键词:

流体剪切应力 (FSS) 是指流体剪切应力.在外基因组中,外基因组是外基因组.肝细胞癌 (HCC) 是一种肝细胞癌.类似胰岛素的增长因子2 (IGF2)瘤微环境 (TME) 是指瘤的微环境.

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