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快速回答:MOTS-c 是从线粒体 12S rRNA 编码的 16 氨基酸肽,2015 年由 Lee 等发现(Cell Metabolism)。代表"线粒体衍生肽"新类别。机制:激活 AMPK 通路,增强骨骼肌胰岛素敏感性、葡萄糖摄取、改善肥胖与胰岛素抵抗。Reynolds et al. (2021) 显示 MOTS-c 给药增强老年小鼠运动表现。研究剂量 5-10 毫克皮下每周 2-3 次。CohBar 公司 II 期 NAFLD 试验未达终点。安全数据有限但动物研究无显著毒性。运动后给药可能放大效应。
什么是 MOTS-c(线粒体衍生肽)?
MOTS-c(Mitochondrial Open Reading Frame of the 12S rRNA-c)是从线粒体 12S rRNA 序列编码的 16 氨基酸肽段,由 Lee 等于 2015 年首次描述(Cell Metabolism)。它代表了一类新型"线粒体衍生肽"(MDPs),暗示线粒体本身可作为内分泌器官参与系统代谢调控。MOTS-c 在血浆中循环,跨细胞与组织传递信号,参与代谢、运动响应与衰老相关过程。
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