酸通过PPARγ-FABP4/CD36通路促进肌肉内脂肪沉积
Hengwei Yu1, Juntao Guo1, Bingzhi Li2
1College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
International journal of biological macromolecules
|January 21, 2025
概括
酸 (EA) 通过激活特定的基因和蛋白质,增加了牛肌肉细胞中的脂肪储存. 这一发现为改善肉质和了解新陈代谢健康提供了洞察力.
科学领域:
- 生物化学 生物化学
- 动物科学动物科学
- 代谢研究研究 代谢研究
背景情况:
- 肌肉内脂肪 (IMF) 积累影响牛肉质量,并与人类的代谢障碍,如肥胖和胰岛素抵抗有关.
- 调节骨肌肉脂肪沉积的精确机制仍然不完全理解.
- 酸 (EA) 之前被确定为潜在的关键代谢物,影响国际货币基金组织的沉积.
研究的目的:
- 研究酸 (EA) 在调节肌内脂肪 (IMF) 沉积中的作用.
- 阐明EA影响牛骨肌肉中的脂质积累的分子机制.
- 评估EA对脂肪沉积和相关基因/蛋白质表达 in vivo 的影响.
主要方法:
- 在体外实验中使用了牛肉肌内预脂细胞.
- 评估了脂质储存,FABP4和CD36的mRNA表达,以及ERK1/2酸化.
- 在小鼠体内进行了体内研究,以验证关于脂肪积累和蛋白质水平的发现.
主要成果:
- 在依赖剂量的情况下,EA治疗增加了牛前脂质细胞中的脂质储存.
- EA增强了FABP4和CD36的mRNA表达,并促进了ERK1/2酸化和PPARγ表达.
- 在体内研究证实EA刺激骨肌肉脂肪积累,并增加FABP4和CD36蛋白水平.
结论:
- 酸 (EA) 通过ERK1/2-PPARγ通路直接促进前脂肪细胞中的脂质滴形成.
- EA增强了骨肌肉中的脂肪积累,为改善肉质提供了潜在的目标.
- 了解EA的作用为管理与骨肌肉脂肪沉积相关的代谢障碍提供了洞察力.
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