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Chen Ye¹, Wen Jiang¹, Ting Hu¹

¹National & Local Joint Engineering Research Center of High throughput Drug Screening Technology, Hubei Province Key Laboratory of Biotechnology of Chinese Traditional Medicine, College of Health Science and Engineering, Hubei University, Wuhan 430062, China.

International journal of molecular sciences

|July 27, 2024

概括

氨基甲基转移酶1 (PRMT1) 通过甲基化CFLAR促进非酒精性脂肪性肝病 (NAFLD) 的脂质积累,导致其降解. 向PRMT1可能为NAFLD提供新的治疗策略.

科学领域:

肝病学和代谢障碍肝病和代谢障碍
分子生物学和生物化学分子生物学和生物化学

背景情况:

非酒精性脂肪肝 (NAFLD) 是一个日益严重的全球健康问题.
卡斯帕酶8和FADD类细胞亡调节剂 (CFLAR) 在缓解非酒精性脂肪肝炎 (NASH) 中发挥作用.
氨酸甲基转移酶1 (PRMT1) 在肝脂代谢中的作用尚不清楚.

研究的目的:

研究PRMT1在肝脂代谢中的作用及其与NAFLD的联系.
在肝病的背景下阐明PRMT1和CFLAR之间的相互作用.

主要方法:

利用共免疫沉 (Co-IP) 和免疫阻塞来验证PRMT1-CFLAR相互作用和CFLAR甲基化.
在肝细胞中用于PRMT1过度表达和淘汰的重组腺病毒.
通过使用正常和高脂肪饮食诱导的肥胖小鼠模型,研究了PRMT1在NAFLD中的作用.
评估与脂肪酸氧化和合成,葡萄糖生成和甘油三积累相关的基因表达.

主要成果:

在禁食条件和NAFLD模型 (MCD饮食,油脂/棕酸治疗) 中,PRMT1表达被上调,CFLAR被下调.
PRMT1过度表达促进了脂质生成和葡萄糖生成,而PRMT1倒置缓解了肝脂异常和肝损伤,可能是通过CFLAR上调调节.
PRMT1直接与CFLAR相互作用和甲基化,导致其降解,随后JNK1激活,并增加脂质沉积.

结论:

通过PRMT1介导的CFLAR甲基化是调节肝脂代谢的关键因素.
通过促进脂质合成和抑制脂肪酸氧化,PRMT1使NAFLD恶化.
向PRMT1为管理NAFLD提供了潜在的治疗途径.

关键词:

在CFLAR中,我们可以看到.这是NAFLD.在PRMT1中,脂质的积累脂质的积累甲基化处理的方法在pJNK1上.

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