单碳酸盐转运体促进了氨酸被棕色脂肪细胞吸收
Anita Reddy1,2, Sally Winther3, Nhien Tran4,5
1Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA.
Nature metabolism
|February 21, 2024
概括
棕色脂肪组织 (BAT) 使用单碳酸盐运输体 (MCT) 来进口酸盐,这是增加能量消耗和对抗小鼠肥胖和炎症的关键过程.
科学领域:
- 代谢研究的研究.
- 脂肪细胞生物学 脂肪细胞生物学
- 线粒体功能 线粒体功能
背景情况:
- 棕色脂肪组织 (BAT) 和色脂肪对能量消耗和代谢健康至关重要.
- 这些组织的酸盐吸收已知可以抵消肥胖和炎症.
- 负责酸盐进口到脂肪细胞的特定载体以前未被确定.
研究的目的:
- 阐明酸盐进口到棕色脂肪组织 (BAT) 的机制.
- 确定参与BAT吸收糖酸盐的等离子体膜输送体.
- 了解如何通过BAT吸收酸盐有助于其代谢益处.
主要方法:
- 研究了酸盐对其单碳酸盐形式的运输依赖性.
- 使用单碳酸盐载体 (MCTs) 来研究酸进口.
- 研究了细胞质化和上腺受体刺激的作用.
- 专注于MCT1作为棕色脂肪细胞中的主要载体.
- 在雄性小鼠中使用药理抑制和MCT1的遗传枯竭.
主要成果:
- 苏酸盐转移到BAT取决于其单碳酸盐形式.
- 单碳酸盐运输体 (MCTs) 促进了酸盐的吸收.
- 由上腺受体刺激诱导的细胞质化促进了酸进口.
- MCT1是棕色脂肪细胞中糖酸盐吸收的主要载体.
- 抑制或耗尽MCT1减少了BAT中的酸盐吸收和代谢.
结论:
- 定义了一种通过MCT介导的BAT中苏酸盐吸收的新机制.
- 确定了MCT1作为关键的载体,促进了酸盐进口到棕色脂肪细胞中.
- 这种机制是BAT在代谢性疾病模型中的保护作用的基础.
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