N6-甲基氨酸circIST1的修改促进低氧诱导因子α介导的葡萄糖分解和肝细胞癌的进展
Yangyang Zhan1,2, Zhongmin Wang1,3, Fei Teng4
1Department of Pharmacy Shanghai Eastern Hepatobiliary Surgery Hospital, Navy Military Medical University Shanghai China.
MedComm
|January 16, 2026
概括
这项研究表明,circIST1,一种经过修改的圆形RNA,通过调节HIF-1α.促进肝细胞癌 (HCC). 向circIST1为HCC代谢干预提供了一个新的策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 循环RNAs (circRNAs) 与癌症有关,但它们在肝细胞癌 (HCC) 和HIF-1α调节中的作用尚不清楚.
- N6-甲基氨酸 (m6A) 修饰影响RNA功能,但其在HCC内的circRNA中的作用仍然基本上未被探索.
研究的目的:
- 研究m6A修饰的circIST1在HCC进展中的功能和机制作用.
- 为了阐明circIST1介导的调节途径,涉及微RNA和HIF-1α在HCC代谢中.
主要方法:
- 在HCC组织和细胞系中分析circIST1表达.
- 在体外和体外功能测试以评估circIST1对HCC细胞行为的影响.
- 机理研究涉及RNA免疫沉,露西法酶记者测定和救援实验,以定义circIST1-miRNA-HIF-1α轴.
- 代谢测试以评估circIST1对糖解的影响.
- 研究METTL3在circIST1稳定中的作用.
主要成果:
- 在HCC中,circIST1表达升高,与预后不佳相关.
- circIST1促进HCC细胞的增殖,迁移,入侵,并抑制细胞亡.
- circIST1作为miR-140-3p和miR-182的ceRNA,可以对HIF-1α进行上调.
- circIST1通过增加葡萄糖吸收和乳酸盐生产来增强HCC中的有氧糖解.
- 在METTL3依赖的m6A修改中稳定circIST1.1.
结论:
- 一个新的调节轴 (m6A-circIST1-miR-140-3p/miR-182-HIF-1α) 驱动HCC中的代谢重编程.
- circIST1是HIF-1α驱动的瘤发生和HCC中的糖解的关键媒介.
- circIST1代表了HCC代谢干预的潜在治疗标.
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