通过调节蛋白质合成,PRMT1促进白血病干细胞的自我更新
Min Zhou1,2, Yi Huang1,2, Ping Xu1,2
1State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 510632, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|December 13, 2024
概括
蛋白质氨酸甲基转移酶1 (PRMT1) 对于慢性髓性白血病干细胞的存活和增殖至关重要. 用MS023抑制PRMT1有效消除这些细胞,为CML患者提供了一种新的治疗策略.
科学领域:
- 血液学 血液学 血液学
- 癌症生物学 癌症生物学
- 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:
- 氨酸激酶抑制剂 (TKIs) 已经改变了慢性髓性白血病 (CML) 的治疗方法.
- 持久性白血病干细胞 (LSCs) 驱动CML复发和进展,尽管TKI治疗.
- 针对LSC漏洞对于持久的CML缓解至关重要.
研究的目的:
- 调查蛋白质氨酸甲基转移酶1 (PRMT1) 在维持CMLLSCs中的作用.
- 评估PRMT1作为CML的潜在治疗标.
主要方法:
- 评估了PRMT1对人类原发性CMLLSC存活率和自我更新的影响.
- 在BCR-ABL驱动的CML小鼠模型中利用了Prmt1的遗传删除.
- 使用MS023.3检查了药理上抑制PRMT1的影响.
- 研究了PRMT1的分子机制,涉及质子修饰和蛋白质合成.
主要成果:
- 对于CML LSC的存活和连续复制,PRMT1是必不可少的.
- 在小鼠中,Prmt1的删除会延迟白血病发生,并损害LSC的自我更新.
- PRMT1的甲基转移酶活性对其功能至关重要.
- 在小鼠中,MS023治疗消除了CMLLSCs,并改善了小鼠的生存率.
- PRMT1通过H4R3me2a增强了RPL29的转录,从而增加了CMLLSC中的全球蛋白质合成.
结论:
- 在CML的LSC维护和白血病进展中,PRMT1起着至关重要的作用.
- 通过PRMT1的基氨酸甲基化调节LSCs中的蛋白质合成.
- PRMT1是CML治疗的可用药物标,提供了一种消除LSCs的策略.
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