通过METTL1介导的tRNA m7G修饰,通过tRNA调节的翻译控制促进AML的白血病发生
Pan Zhao1,2, Lin Xia1, Dan Chen1
1Medical Center of Hematology, Xinqiao Hospital of Army Medical University, Chongqing, 400037, China.
Experimental hematology & oncology
|January 24, 2024
概括
升高的METTL1/WDR4通过破坏tRNA的稳定性和增加tsRNA生物发生,促进急性髓性白血病 (AML). 针对METTL1/WDR4可能为AML患者提供新的治疗策略.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 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:
- RNA的修改调节了关键的细胞过程.
- 异常的N7-甲基瓜诺辛 (m7G) 修饰及其调节器METTL1/WDR4与各种癌症有关.
- 在急性髓性白血病 (AML) 中METTL1/WDR4的特定作用需要阐明.
研究的目的:
- 研究AML中METTL1/WDR4的功能和分子机制.
- 为了确定METTL1/WDR4在AML患者的预后意义.
主要方法:
- 定量实时PCR (qRT-PCR) 和METTL1/WDR4表达的西部抹杀.
- 细胞增殖,细胞周期和细胞亡测定 (CCK-8,细胞计数,流细胞计量).
- 机制研究包括tRNA稳定性分析,测序 (转录组,小型非编码RNA),蛋白质组学和蛋白质合成测量.
主要成果:
- 在AML患者中,METTL1/WDR4表达显著上调,与预后不佳相关.
- 抑制METTL1抑制AML细胞的增殖,并诱导细胞亡.
- 降低METTL1降低了tRNA上的m7G修饰,导致tRNA不稳定,并增强了tsRNA生物发生.
- 在METTL1淘汰和从METTL1枯竭的AML细胞中转移tRNA时观察到全球翻译效率降低.
结论:
- METTL1/WDR4在AML发展 (白血病发生) 中起着至关重要的作用.
- 这些发现凸显了METTL1/WDR4作为AML治疗的潜在治疗点.
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