在急性髓性白血病前体细胞中,在应激反应期间调节WTAP和m6A修饰的circRNAs
Alessia Iaiza1, Gilla Mazzanti2, Frauke Goeman3
1Department of Biology and Biotechnology 'Charles Darwin', Sapienza University of Rome, P.le Aldo Moro, 5, 00185, Rome, Italy.
Cellular and molecular life sciences : CMLS
|June 23, 2024
概括
在急性髓性白血病 (AML) 细胞中,博尔特佐米布治疗对N6 - 甲基亚丁素 (m6A) RNA调节和循环RNA (circRNA) 表达产生影响,揭示了潜在的治疗点. 这种蛋白质毒性应激反应会影响氧化应激和蛋白质平衡.
科学领域:
- 分子生物学分子生物学
- 在RNA生物学,RNA生物学.
- 癌症研究 癌症研究
背景情况:
- 甲基氨酸 (m6A) 是一种关键的RNA修饰,调节基因表达和循环RNA (circRNA) 生物发生.
- 蛋白质毒性应激反应诱导是急性髓性白血病 (AML) 的有希望的抗癌策略.
- m6A修饰因子与抑制蛋白质毒性应激反应相互作用.
研究的目的:
- 研究一种蛋白酶体抑制剂Bortezomib (Btz) 对AML细胞中的m6A调节的作用.
- 为了确定Btz对m6A-修饰的circRNA表达的影响.
- 阐明氧化应激在Btz诱导的m6A变化中的作用.
主要方法:
- 用Bortezomib (Btz) 治疗AML细胞.
- 对m6A调节剂WTAP表达和氧化应激标记物 (ROS,HMOX-1) 的分析.
- 通过Btz调制的m6A-修饰的circRNAs的识别,包括circHIPK3.
主要成果:
- 在转化水平上,Btz治疗降低了WTAP表达的调节,由增加的氧化应激介导.
- Btz诱导氧化应激,其特征是ROS生成和HMOX-1激活.
- N-乙半氨酸的使用恢复了WTAP的表达,并且特定的m6A修饰的circRNAs,如circHIPK3,被Btz.调节.
结论:
- 博尔特佐米布影响AML细胞中的m6A调节和circRNA表达,与氧化和ER应激通路相关.
- 低调WTAP与Btz诱导的氧化应激有关.
- 这些发现提供了针对蛋白质毒性压力和RNA修饰途径的AML治疗策略的见解.
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