通过YTHDC2介导的RNA m6 一种修饰导致PM2.5诱导的肝肥胖症
Zhipeng Yan1, Yaru Zhang1, Nan Nan1
1College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Shanxi 030006, PR China.
Journal of hazardous materials
|June 29, 2024
概括
细颗粒物 (PM$_{2.5}$) 暴露会通过改变N$^{6}$-甲基氨酸 (m$^{6}$A) 修饰而导致肝脏脂肪的积累. 这项研究显示,PM$_{2.5}$降低了YTHDC2的调节,影响了与脂质相关的基因稳定性,并导致肝硬化.
科学领域:
- 环境健康 环境健康
- 分子生物学分子生物学
- 肝病学 肝病学是一种肝病学.
背景情况:
- 暴露于细颗粒物 (PM$_{2.5}$) 是已知的肝硬化症的危险因素.
- N$^{6}$-甲基氨酸 (m$^{6}$A) 修饰在由环境因素引起的代谢障碍中起作用,但其与PM$_{2.5}$引起的肝脏问题之间的联系尚不清楚.
研究的目的:
- 为了研究m$^{6}$A在PM$_{2.5}$引起的肝肥胖症中的作用.
- 阐明PM$_{2.5}$通过m$^{6}$A.$影响肝脏新陈代谢的分子机制.
主要方法:
- 雄性C57BL/6J小鼠和HepG2细胞被暴露在真实环境中的PM$_{2.5}$.
- 分析了全球m$^{6}$A水平,YTHDC2表达以及脂质相关基因 (CEPT1,YWHAH) 的表达和稳定性.
- 研究了YTHDC2与目标基因之间的相互作用.
主要成果:
- 暴露于PM$_{2.5}$导致肝脏脂质大量积累,并在体外和体内增加了全球m$^{6}$A水平.
- YTHDC2表达被PM$_{2.5}$下调,影响了CEPT1和YWHAH的稳定性和表达.
- 强制YTHDC2表达逆转了PM$_{2.5}$对这些基因的抑制作用.
结论:
- 通过对CEPT1和YWHAH通过YTHDC2下调调节的修改,诱导肝肥胖症.
- 这一过程降低了mRNA稳定性和关键脂质代谢基因的表达,导致肝脏脂肪积累.
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