由PGC1-α驱动的线粒体生物发生有助于在黑色素瘤中形成癌症干细胞表型
Fabrizio Fontana1, Chiara Macchi1, Martina Anselmi1
1Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Università degli Studi di Milano, Milan, Italy.
Biochimica et biophysica acta. Molecular basis of disease
|September 27, 2023
概括
黑色素瘤癌干细胞 (CSCs) 依赖于增强的线粒体活动来增长和生存. 准这些线粒体可能提供一种新的治疗策略来阻止黑色素瘤的进展.
科学领域:
- 黑色素瘤研究研究
- 癌症干细胞生物学
- 线粒体代谢的代谢过程
背景情况:
- 黑色素瘤癌干细胞 (CSCs) 的新陈代谢调节仍然不太清楚.
- 线粒体在细胞功能中起着至关重要的作用,但它们对黑色素瘤CSC特征的具体贡献尚不清楚.
研究的目的:
- 研究线粒体在瘤中赋予癌症干细胞 (CSC) 特性中的作用.
- 探索针对线粒体生物生成作为黑色素瘤治疗策略的潜力.
主要方法:
- 使用了A375和WM115黑色素瘤细胞系和黑色球模型.
- 评估了线粒体质量,PGC1-α表达,氧化酸化 (OXPHOS) 复杂水平,线粒体膜潜力,氧耗,ATP合成和ROS产生.
- 研究了PGC1-α沉默和PGC1-α抑制剂 (XCT790,SR-18292) 对CSC特征的影响.
主要成果:
- 与附着细胞相比,富含ABCG2+ CSC的黑色球表现出更高的线粒体质量和增加的PGC1-α表达和OXPHOS复杂水平.
- 在CSC中观察到增强的线粒体活性 (膜潜力,氧耗,ATP合成,ROS产生).
- PGC1-α沉默或抑制抑制了CSC特征,包括克隆性能力,迁移,球形形成和ABCG2+细胞增殖.
- 黑色素瘤的瘤性和侵入性被PGC1-α抑制剂降低.
结论:
- 线粒体生物发生率的增加与黑色素瘤的茎状表型有关.
- 以线粒体丰富的CSC作为治疗向,是对抗黑色素瘤进展和侵袭的潜在策略.
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