Nat10介导的ac4C表体转录学通过翻译控制调节了造血干细胞/原始细胞命运的决定
Feng Huang1,2, Yushuai Wang2, Weiwei Gao2,3
1The First Affiliated Hospital, The Fifth Affiliated Hospital, State Key Laboratory of Respiratory Diseases, Guangzhou Medical University, Guangzhou 510005, China.
Science advances
|January 7, 2026
概括
Nat10酶通过通过RNA ac4C修饰控制基因翻译来调节血细胞的形成. 它的缺失会损害造血干细胞的功能和分化,这对于维持血液平衡至关重要.
科学领域:
- 血液学 血液学 血液学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
背景情况:
- 表观遗传调节对于造血干细胞 (HSC) 的自我更新和分化至关重要,维持血液平衡.
- Nat10介导的RNA ac4C修饰与恶性血液形成有关,但其在正常血液形成中的作用尚不清楚.
研究的目的:
- 为了研究Nat10介导RNAac4C修饰在正常血液形成中的作用.
- 为了绘制血造干细胞和原生细胞 (HSPC) 中的ac4C模式,并了解Nat10的功能.
主要方法:
- 开发了ULAC-seq以映射罕见HSPC中的ac4C修饰.
- 利用 Nat10 淘汰模式来评估其对 HSC 和原始细胞的影响.
- 研究了Nat10对mRNA翻译和基因调节的作用机制.
主要成果:
- 在HSPC中发现了动态的,特定于细胞类型的ac4C模式,其中巨核细胞-红色素原体 (MEP) 的峰值.
- 证明Nat10淘汰会导致HSC自我更新缺陷和MEP分化停止,导致造血失败.
- 显示Nat10沉积ac4C在像Nfix这样的转录调节者的mRNA上,增强它们的翻译并控制HSPC命运.
结论:
- Nat10通过转录因子的ac4C依赖的翻译控制来编排血液形成.
- 建立了一个表表写体-转写体调节轴,这对于HSC维护和功能至关重要.
- 这些发现凸显了Nat10在正常血液发育和平衡中发挥的关键作用.
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