以PRMT3为媒介的食后翻译性适应调节了代谢灵活性
Zhengyun Huang1, Xiangpeng Liu1, Xiyue Chen2
1Cambridge-Suda Genomic Resource Center, The Fourth Affiliated Hospital, Suzhou Medical College, Soochow University, Suzhou, China.
Nature communications
|February 2, 2026
概括
时间限制养 (TRF) 和PRMT3抑制改善了肥胖患者的代谢灵活性. 这项研究确定了PRMT3介导的氨酸甲基化作为营养反应的关键调节器和肥胖症的潜在治疗标.
科学领域:
- 代谢研究的研究.
- 肥胖研究的研究.
- 分子生物学分子生物学
背景情况:
- 肥胖严重损害了新陈代谢的灵活性,阻碍了身体适应不断变化的能量需求的能力.
- 饮食干预措施,如时间限制养 (TRF),在恢复代谢灵活性方面表现有前途.
- 关联肥胖,代谢灵活性和食模式的精确分子机制需要进一步阐明.
研究的目的:
- 为了研究PRMT3和阿金宁甲基化在调节食和禁食状态期间代谢灵活性中的作用.
- 探索针对肥胖和代谢功能障碍的PRMT3的治疗潜力.
- 为了阐明下游目标和信号通路受到PRMT3在脂肪细胞中的影响.
主要方法:
- 使用一种饮食诱导肥胖 (DIO) 鼠标模型.
- 研究了药理学PRMT3抑制和TRF (16:8疗法) 的影响.
- 在内脏白脂肪组织 (vWAT) 中分析了包括PRMT3,ADMA和SLC25A1在内的基因和蛋白质表达.
- 进行了脂肪细胞特异性基因删除研究 (Slc25a1).
主要成果:
- 食通过胰岛素-pAKT信号调节PRMT3和ADMA;禁食减少了它们的表达.
- 在雄性小鼠中,PRMT3抑制减弱了DIO和增强了脂肪细胞糖解.
- PRMT3直接甲基化氨酸残留物,在养过程中驱动SLC25A1的表达.
- 16:8 TRF疗法使PRMT3和ADMA水平正常化,并抑制了SLC25A1.1.
- 抑制PRMT3模仿了TRF的益处,改善了代谢灵活性.
- 脂肪细胞特异性Slc25a1删除保护DIO和改善胰岛素敏感性.
结论:
- 在vWAT中以PRMT3为媒介的氨酸甲基化作为营养反应轴,损害肥胖的代谢灵活性.
- 向PRMT3代表了对抗肥胖和相关代谢障碍的潜在治疗策略.
- PRMT3-ADMA-SLC25A1通路是脂肪细胞功能和全身代谢健康的关键调节者.
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