RNA N6 - 甲基氨酸甲基组协调长非编码RNA,通过激活PI3K信号传递来调解癌症药物耐药性
Yanhong Tan1,2, Changli Zhou1, Sicheng Bian1
1Department of Medicine, The MetroHealth System, Case Western Reserve University, Cleveland, OH, USA.
Cell death & disease
|November 7, 2025
概括
长非编码RNAs (lncRNAs) 和RNA N6-甲基氨酸 (m6A) 通过稳定转录来促进白血病药物耐药性. 用PI3K抑制剂向lncRNA-m6A-PI3K通路可以克服耐药性并提高生存率.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 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:
- 长非编码RNAs (lncRNAs) 和RNA N6-甲基氨酸 (m6A) 修饰与白血病药物耐药性有关.
- 在调节抗性方面,lncRNAs和m6A的协调作用尚未完全理解.
研究的目的:
- 调查 lncRNAs 和 m6A 在慢性髓性白血病 (CML) 中的氨酸激酶抑制剂 (TKI) 耐药性的相互作用.
- 阐明潜在的分子机制,并确定潜在的治疗点.
主要方法:
- 对TCI耐性CML细胞中的lncRNA表达和m6A丰富的分析.
- 在CML患者样本中的验证.
- 功能性研究涉及特定的lncRNAs (SENCR,PROX1-AS1,LINC00892) 的淘汰.
- 对FTO-m6A-PI3K信号轴的研究.
- 在体外和体内对PI3K抑制剂的疗效研究. alpelisib.
主要成果:
- 耐药性CML细胞在lncRNA中表现出更高的m6A含量.
- 上调的lncRNAs (SENCR,PROX1-AS1,LINC00892) 与TKI耐药性和CML患者的预后不佳有关.
- 这些lncRNAs的破坏恢复了TKI的敏感性.
- 依赖FTO的m6A低甲基化稳定了lncRNAs,导致PI3K通路的激活.
- 在临床前模型中,阿尔佩利西布有效地消灭了耐药细胞,并提高了生存率.
结论:
- lncRNA-m6A-PI3K信号级联是CML中TKI抵抗的一个关键驱动因素.
- 具有高m6A含量的lncRNAs作为药物耐药性和预后的潜在生物标志物.
- 准PI3K通路为克服白血病和潜在的其他癌症中TKI抵抗提供了一个有希望的治疗策略.
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