外体PGAM1通过与ACTG1相互作用,促进前列腺癌血管生成和转移
Jun-Qi Luo1, Tao-Wei Yang1, Jun Wu1
1Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
Cell death & disease
|August 4, 2023
概括
外体PGAM1通过增强血管生成和侵入形成,促进前列腺癌转移. 血中异位体PGAM1升高可能作为检测转移性前列腺癌的液体活检标志物.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 生物化学 生化学
背景情况:
- 外基因组调解细胞间通信,促进癌症转移.
- 糖酸突变酶1 (PGAM1) 与癌症进展有关,但其在外体功能和前列腺癌 (PCa) 转移中的作用尚未完全理解.
研究的目的:
- 研究外体PGAM1在促进前列腺癌血管生成和转移中的功能.
- 阐明外体PGAM1作用的潜在分子机制.
- 评估外体PGAM1作为转移性PCa的潜在液体活检标志物.
主要方法:
- 在体外和体内生物实验.
- 谷氨酸-S转移酶的拉下,共免疫沉,和西部涂抹.
- 凝降解测定和评估invadopodia/podosome的形成.
- 分析转移性和非转移性PCa患者的血样本.
主要成果:
- 与非转移性患者相比,转移性PCa患者的外体PGAM1水平在血中显著更高.
- 外体PGAM1通过诱导入侵形成促进了PCa细胞转移.
- 外体PGAM1从PCa细胞转移到人静脉内皮细胞 (HUVECs),与γ-actin (ACTG1) 结合.
- 这种相互作用促进了HUVECs中的Podosome形成和新血管发芽,表明增强了血管生成.
- 在体内研究表明,外体PGAM1在小鼠模型中增加了肺转移.
结论:
- 外体PGAM1通过驱动血管生成和侵入形成,在促进前列腺癌转移方面发挥着关键作用.
- 外体PGAM1是一种潜在的液体活检生物标志物,用于检测转移性前列腺癌.
- 了解外体PGAM1通路为抑制PCa转移提供了治疗点.
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