一个RNA转甲基化途径控制脏的原潜力
Harini Ramalingam1, Jesus Alvarez1, Andrea Flaten1
1Department of Internal Medicine and Division of Nephrology, UT Southwestern Medical Center, Dallas, TX, 75390, USA.
Nature communications
|May 28, 2025
概括
脏发育依赖于甲胺代谢. 通过METTL3增强S-adenosylmethionine (SAM) 和RNA转甲基化,增强脏前体细胞和脏形成,为脏疾病提供新的治疗点.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 发展生物学 发展生物学
- 分子代谢的分子代谢.
背景情况:
- 成人的脏无法产生新的脏,这增加了脏数量较少的个体患慢性脏病 (CKD) 的风险.
- 由于营养物质的可用性有限,脏形成受到阻碍,但关键的代谢依赖性尚未完全理解.
研究的目的:
- 为了研究S-adenosylmethionine (SAM) 和细胞转甲基化在脏新生中的作用.
- 确定调节原体细胞 (NPC) 分化和产生的分子机制.
主要方法:
- 评估了调节转甲基化状态和METTL3活性对NPC分化和 nefrogenesis的影响.
- 利用RNA免疫沉,然后进行测序以确定METTL3.3的直接标.
- 研究Lrpprc mRNA在调解SAM和METTL3对产生的影响中的作用.
主要成果:
- 细胞转甲基化状态和SAM水平对于原性能力至关重要.
- RNA甲基转移酶METTL3作为SAM传感器,对于NPC命运决定至关重要.
- 抑制METTL3或转甲基化阻断了NPC的分化,而增强则促进了子的产生.
- 编码线粒体蛋白质的lrpprc mRNA是METTL3介导甲基化的直接目标.
- 抑制LRPPRC可以抵消SAM和METTL3.3的原作用.
结论:
- 一个氨酸-SAM-RNA转甲基化途径调节了脏形成.
- METTL3及其目标Lrpprc是该途径的关键组成部分.
- 针对这种途径提供了一种潜在的策略,可以增强产生和对抗病.
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