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《科学》 第391卷 第6786期 · 2026年2月12日 · 中文解读

脂肪燃烧的瓶颈

The bottleneck of fat burning · Angela M. Ramos-Lobo and Pierre Maechler
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这篇讲什么
一项研究发现,线粒体转运蛋白SLC25A45在小鼠需要消耗脂肪时促进肉碱合成,对脂肪燃烧至关重要。
原文开头
A mitochondrial transport protein promotes carnitine synthesis in mice when fat consumption is needed Angela M. Ramos-Lobo and Pierre Maechler L-Carnitine (the form of carnitine found in animals) transports long-chain fatty acids into mitochondria, where they go through b-oxidation, producing energy (1). This process occurs primarily in organs that use fat as energy, such as cardiac and skeletal muscles. For humans who eat meat, most carnitine is obtained from food. However, ~25% of the supply of carnitine in omnivorous humans relies on de novo synthesis, which reaches >90% among strict vegetarians or vegans. Endogenous carnitine is synthesized in the liver and kidneys from two methylated amino acids, lysine and methionine (1). …
摘自《科学》(Science)第391卷 第6786期 · 2026年2月12日,Angela M. Ramos-Lobo and Pierre Maechler。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。
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