在A/IGF2BP3驱动的血清生物合成中,有助于AML的根性和代谢脆弱性
Feng Huang1,2,3, Yushuai Wang2, Xiuxin Zhang3,4
1The First Affiliated Hospital, The Fifth Affiliated Hospital, State Key Laboratory of Respiratory Diseases, Guangzhou Medical University, Guangzhou, China.
Nature communications
|May 6, 2025
概括
RNA N6 - 甲基氨酸 (m6A) 修饰调节了急性髓性白血病 (AML) 中的血清蛋白合成. 削减IGF2BP3,一个m6调节器,使AML细胞对氨酸和甘氨酸缺乏敏感,提供了一个潜在的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 代谢途径 代谢途径
背景情况:
- 氨基酸代谢重编程是一种癌症的脆弱性.
- 急性髓性白血病 (AML) 和白血病干细胞/发病细胞 (LSC/LIC) 的血清代谢机制尚未完全理解.
研究的目的:
- 研究RNAN6 - - 甲基氨酸 (m6A) 修饰在调节AML中的血清蛋白生物合成中的作用.
- 确定参与AML血清代谢的关键调节器和途径.
主要方法:
- 通过CRISPR/Cas9查,识别影响AML细胞存活的m6A调节体.
- 对IGF2BP3结合m6的A-修饰mRNAs的血清蛋白合成途径 (SSP) 基因的分析.
- 在体外和体内使用IGF2BP3沉默和血清蛋白/糖氨酸限制对AML抑制的评估.
主要成果:
- 在m6A调节器IGF2BP3或METTL14的耗尽使AML细胞对胺和甘氨酸 (SG) 缺乏敏感.
- IGF2BP3与SSP基因 (例如ATF4,PHGDH,PSAT1) 的m6A修饰的mRNA结合,使它们稳定并维持血清蛋白的产生.
- 结合IGF2BP3沉默和饮食SG限制,在体外和体内有力地抑制AML,节省正常的血液形成.
结论:
- 修改的RNAm6是AML中的血清蛋白代谢脆弱性的关键调节者.
- 在IGF2BP3/m6A/SSP轴代表了AML治疗的有前途的治疗目标.
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