一种肠道微生物代谢物HYA通过激活AMP激活蛋白激酶来改善脂肪细胞缩
Rino Matsushita1, Kaori Sato1, Kunitoshi Uchida2
1Laboratory of Nutritional Physiology, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Suruga-ku, Shizuoka 422-8526, Japan.
Nutrients
|April 26, 2025
概括
10-基-cis-12-octadecenoic 酸 (HYA) 是肠道细菌的代谢物,通过激活 AMPK,可以减少脂肪细胞的大小. 这一发现表明HYA是治疗肥胖和代谢障碍的潜在疗法.
科学领域:
- 微生物学 微生物学
- 代谢过程中的代谢.
- 细胞生物学 细胞生物学
背景情况:
- 肠道微生物群的代谢物影响宿主器官的交叉交流.
- 10-基-cis-12-octadecenoic acid (HYA) 是一种来自乳酸细菌的林诺酸代谢物,表现出代谢和抗炎作用.
- HYA对脂肪组织的直接影响及其潜在机制尚不清楚.
研究的目的:
- 研究HYA对肥胖小鼠脂肪细胞大小的影响.
- 确定HYA对脂肪细胞的直接影响并阐明其作用机制.
主要方法:
- 在高脂肪饮食中的小鼠中给予HYA.
- 在体外研究中,使用3T3-L1脂肪细胞治疗HYA.
- 对脂肪细胞大小,细胞内脂质滴 (油红色O染色),基因表达 (实时qPCR),AMPK酸化 (免疫结晶) 和细胞内Ca2+度 (成像) 的分析.
主要成果:
- 在肥胖小鼠中,HYA的使用显著降低了脂肪细胞的大小,与酸不同.
- 在3T3-L1脂肪细胞中,HYA治疗减少了细胞内脂质滴.
- HYA抑制了脂质生成 (减少了FAS,ACC1表达) 和增强了脂肪酸氧化 (增加了CPT1A表达).
- 在脂肪细胞中,HYA通过增加细胞内Ca2+度激活了AMP激活蛋白激酶 (AMPK).
结论:
- 通过激活脂肪细胞中的AMPK,HYA有效地抑制脂肪细胞缩.
- HYA显示出作为治疗肥胖和相关代谢障碍的治疗剂的潜力.
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