解读乳腺癌EVs中缺氧诱导的代谢变化及其对癌细胞的功能影响
Ashish Sahu1, Vaidehi Bhavsar1, Ravindra Taware2
1Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Ahmedabad, Palaj, Gandhinagar, Gujarat, India.
Archiv der Pharmazie
|November 6, 2025
概括
缺氧性乳腺癌细胞释放出具有改变代谢的细胞外囊泡 (EV),促进瘤进展. 这些EV含有影响细胞迁移,入侵和DNA损伤的关键代谢物.
科学领域:
- * 代谢学 代谢学
- * 癌症生物学 癌症生物学
- * 细胞外囊泡
背景情况:
- *低氧是固体瘤的标志,推动瘤的进展和治疗阻力.
- * 细胞外囊泡 (EVs) 调解细胞间的通信,并在癌症的发展中发挥作用.
- * 低氧下代谢重编程会影响电动汽车的载荷和功能.
研究的目的:
- * 在低氧条件下研究乳腺癌细胞分泌的EVs的代谢变化.
- * 确定这些代谢改变的EVs对癌细胞行为的功能影响.
- * 为了在低氧EV中识别导致瘤进展的特定代谢物.
主要方法:
- *使用液体染色学-质谱学 (LC-MS/MS) 进行非向的代谢分析.
- *从正常和缺氧条件下培养的乳腺癌细胞系 (MDA-MB-231,MCF-7) 中隔离和表征EVs.
- *通过传输电子显微镜 (TEM),扫描电子显微镜 (SEM),纳米颗粒追踪分析 (NTA) 和免疫阻塞来评估EV的一致性.
- *功能性测定测量癌细胞迁移,入侵和上皮细胞-介质细胞过渡 (EMT).
主要成果:
- * 缺氧EVs的代谢提取物显著增强了乳腺癌细胞迁移,入侵和EMT.
- * 代谢分析分析确定了400多种注释代谢物,其中48种在缺氧EV中显著改变.
- * 低氧性EV中关键的上调代谢物包括 рибофлавин,5,6-epoxy-8,11,14-eicosatrienoic 酸,以及 furandicarboxylic 酸
- *确定了N-乙-l-甲因和5,10-甲四基叶酸等关键代谢物,可能与细胞增殖,DNA损伤和表观遗传调节有关.
- *路径分析显示,低氧EV中芳香氨基酸和利博弗拉代谢增加.
结论:
- * 缺氧诱导了乳腺癌细胞衍生的EVs显著的代谢重编程.
- *这些代谢改变的EVs促进瘤进展的关键特征,包括迁移,入侵和EMT.
- *低氧EV中的特定代谢物可能作为乳腺癌的潜在治疗标或生物标志物.
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