二聚甲基脱酶通过激活RAS/ERK通路并经过克罗化修饰来促进白色脂肪细胞的色化
Yuexia Liu1, Juntong Liang1, Zunhai Liu1
1College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
International journal of biological macromolecules
|March 19, 2024
概括
二聚脱酶 (DLD) 通过增强线粒体功能通过克罗化修饰和RAS/ERK通路促进白脂肪色化. 这一发现为肥胖和相关疾病提供了新的治疗点.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 代谢过程中的代谢.
背景情况:
- 乙化和十字化是各种细胞过程中关键的翻译后修饰.
- 二聚脱酶 (DLD) 涉及白脂肪色,这是一个与能量代谢和肥胖有关的过程.
研究的目的:
- 研究DLD在白脂肪组织 (WAT) 色中的作用.
- 阐明DLD的调控机制,包括其翻译后修改 (PTM) 和信号通路.
主要方法:
- 定量实时PCR (qPCR),西部涂抹 (WB),ELISA,免疫光学,JC-1和米托追踪器染色.
- 油红色O,Bodipy,HE染色,以及血液脂质分析.
- 蛋白相互作用分析和共免疫沉 (Co-IP) 试验.
主要成果:
- 在小鼠中,DLD显著促进白色脂肪组织色.
- 通过RAS/ERK通路激活线粒体功能,DLD可以增强脂肪细胞的色.
- DLD化促进棕色化,而DLD乙化抑制它,表明这些PTM的作用相反. 鉴定出Sirtuin3 (SIRT3) 是一个关键的酶,可以调节DLD的克罗托尼和脱乙基化.
结论:
- DLD是白色脂肪细胞色的关键调节者,主要通过激活线粒体功能.
- 对DLD的克罗化修饰对于促进色至关重要,与乙化的抑制作用形成鲜明对比.
- 这些发现提供了对DLD在脂肪细胞代谢中的作用的机制理解,并为肥胖提供了潜在的治疗策略.
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