代谢重编程成一种由前列腺癌细胞衍生的细胞外囊引起的糖解现象
Yoon-Jin Lee1, Chul Won Seo1, Shinwon Chae1
1Department of Biochemistry, Soonchunhyang University, College of Medicine, Cheonan, Republic of Korea.
Molecular & cellular proteomics : MCP
|March 15, 2025
概括
前列腺癌细胞释放出细胞外囊泡 (EVs),该囊泡将受体细胞重新编程以采用华堡效应,增强酸性瘤环境中的生存能力. 这种代谢转变增加了葡萄糖的消耗和扩散.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 癌细胞经常表现出有氧糖解 (Warburg效应) 在低氧瘤微环境中生存和增殖.
- 酸性瘤微环境会损害免疫反应,帮助癌细胞逃离免疫系统.
- 已知瘤衍生的细胞外囊泡 (EVs) 能够转移物质并影响受体细胞,但它们在代谢重编程中的作用不太清楚.
研究的目的:
- 研究前列腺癌细胞中EVs在代谢重编程中的作用.
- 为了确定特定的EV组件,这些组件调解受体细胞中的代谢变化.
- 了解如何EV介导的代谢重编程有助于癌细胞在酸性条件下生存.
主要方法:
- 已建立的前列腺癌细胞系 (PC-3和PC-3AcT) 适应酸性,富含乳酸的条件.
- 从PC-3和PC-3AcT细胞中分离出的EV的定量蛋白质组学分析.
- 评估PC-3AcT EVs对受体PC-3细胞代谢,增殖和生存的影响.
主要成果:
- 鉴定了935种EV蛋白,其中159种与适应细胞中的能量代谢,细胞形状和细胞外基质相关的调节蛋白.
- 来自适应细胞的EV被富含糖解酶和阿波利波蛋白,特别是阿波利波蛋白B-100 (APOB).
- 关于EVs的APOB促进了受体细胞的吸收,增加了六酶和果酶活性,促进了Warburg表型并提高了生存率.
结论:
- 来自前列腺癌细胞的EVs有助于接受细胞的代谢重编程.
- 电子体调解获得华堡表型,增强癌细胞存活率和增殖率.
- 这项研究突出了一个新的机制,癌细胞通过EV介导的代谢重编程来适应和在瘤微环境中壮成长.
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