晨间信号Morning Signal
《科学》 2026年10月1日 · 中文解读

线粒体载体蛋白开启产热机制

A mitochondrial carrier turns on the heat · Martin van der Laan
约 10 分钟Perspectives在小程序里点播,20 到 60 分钟做好
这篇讲什么
德国萨尔兰大学洪堡医学院的马丁·范德兰在《科学》杂志撰文指出,一种名为SLC25A34的孤儿线粒体转运蛋白是棕色脂肪组织中整合昼夜节律、饮食与环境信号的关键节点。该蛋白受REV-ERBα抑制、受寒冷和PPARα/γ激活,其缺失会抑制棕色脂肪细胞的呼吸活性。研究还挑战了哺乳动物线粒体不摄取草酰乙酸的传统观点,并提示SLC25A34可能成为治疗肥胖的新药靶点。
原文开头
As homeothermic organisms, mammals occasionally must spend metabolic energy to maintain body temperature but try to avoid its wasteful expenditure. Brown adipose tissue (BAT) plays a key role in thermogenic metabolism (1). At normal temperature, thermogenesis is switched off, and BAT lipid turnover is repressed by the circadian clock, an internal mechanism that regulates daily physiological processes, including metabolism. Upon exposure to cold, some metabolic energy derived from oxidative respiration in mitochondria is diverted to heat production (2). It has been unclear which molecular mechanisms govern the balance between the circadian clock, BAT lipid metabolism, and thermogenesis. On page 79 of this issue, Karavaeva et al. …
摘自《科学》(Science)2026年10月1日,Martin van der Laan。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
晨间信号小程序码
微信扫码,在小程序里听完整版
不用登录先听一篇 · 或在微信搜索小程序 晨间信号
同期其他文章