细胞外基质脱离的癌细胞通过增加基因素脱甲基酶KDM6活性来抵抗氧化应激
Mohamed A Alfaleh1,2, Mohammed Razeeth Shait Mohammed3, Anwar M Hashem2,4
1Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
抗细胞死亡的一种形式anoikis的癌细胞依赖KDM6A/B来维持糖解和谷氨酸代谢. 抑制KDM6A/B会破坏这些通路,增加活性氧物种 (ROS),导致细胞死亡.
科学领域:
- 癌症生物学 癌症生物学
- 细胞的新陈代谢
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 表皮癌细胞需要细胞外基质 (ECM) 附着用于转移.
- 脱离ECM会引发新陈代谢转变,包括增加糖分和谷氨酸溶解,以避开化.
- 抗阿诺基斯的癌细胞表现出H3K27me3脱甲基酶,KDM6A/B的高表达.
研究的目的:
- 为了研究KDM6A/B在调节抗阿诺基斯抗癌癌细胞细胞代谢中的作用.
- 使用GSK-J4确定KDM6A/B抑制对代谢途径的影响.
主要方法:
- 利用非目标代谢学来分析代谢变化.
- 评估反应性氧物种 (ROS) 水平和线粒体膜潜力.
- 测量了谷氨水平和关键的糖解酶基因表达.
主要成果:
- 抑制KDM6A/B极大地影响了糖解,甲基西斯提丁,精氨酸和谷氨酸代谢.
- 抑制导致ROS和线粒体脱极化增加.
- 由于谷氨酸途径中间体减少,谷氨酸水平降低.
- 发现KDM6A/B可以调节关键的糖分解质基因 (hexokinase,乳酸脱酶,GLUT-1).
结论:
- 在耐阿诺基斯癌细胞中,KDM6A/B对于维持糖解,谷氨酸代谢和谷氨稳定至关重要.
- 抑制KDM6A/B会破坏这些代谢过程,增加ROS并诱导细胞死亡.
- 向KDM6A/B代表了一种潜在的治疗策略,可以对抗抗氧化抗性癌症.
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