马拉酸-酸盐的穿器支持棕色脂肪细胞中的热生成性脂质调动
Michaela Veliova1, Caroline M Ferreira1,2, Katrina P Montales1
1Department of Molecular and Medical Pharmacology, and Division of Endocrinology, David Geffen School of Medicine, University of California, Los Angeles, USA.
The FEBS journal
|February 18, 2026
概括
酸盐-酸盐穿 (MASh) 对于棕色脂肪组织 (BAT) 热生成至关重要. 这项研究揭示了MASH在BAT中调节脂质代谢和脂解,影响能源消耗.
科学领域:
- 代谢途径 代谢途径
- 细胞呼吸 细胞呼吸
- 脂肪组织生物学 脂肪组织生物学
背景情况:
- 棕色脂肪组织 (BAT) 通过热生成产生热量,需要高效的能量代谢.
- 在BAT中的糖溶性流量取决于NAD+再生,由像酸盐-酸盐穿 (MASh) 这样的途径支持.
- 之前的研究表明,MASH激活会影响棕色脂肪细胞的能量消耗.
研究的目的:
- 阐明酸盐-酸盐穿 (MASh) 在棕色脂肪组织 (BAT) 能量代谢中的特定作用.
- 在BAT中调查MASH对脂质代谢和热生成的直接调节.
- 为了确定MASH成分在BAT脂质平衡中的功能意义.
主要方法:
- 在BAT中评估了酸脱酶和谷氨酸-酸乙酸转胺酶的酶活性.
- 使用一个复制系统与隔离的BAT线粒体和细胞质MASH酶.
- 在棕色脂肪细胞中使用了关键MASH线粒体载体 (Ogc和Aralar1) 的遗传沉默.
主要成果:
- 在BAT中证明了功能MASH,有效地重氧化了额外的线粒体NADH.
- 在沉默Ogc或Aralar时,没有观察到对呼吸速率的影响1.
- 发现沉默Ogc或Aralar1导致脂质滴积累和脂质分解受损.
结论:
- 酸盐-酸盐穿器 (MASh) 是功能性的,在BAT中直接调节脂质代谢.
- 马什在维护BAT脂质平衡中发挥着新的作用.
- 这些发现表明MASH参与调节身体的能量消耗和热生成.
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