人体肠道微生物芳香氨基酸和相关代谢物通过肠道免疫控制来预防肥胖
Zengliang Jiang1,2,3,4,5, Liuqing He1,3, Diyin Li1,3
1Research Center for Industries of the Future, School of Medicine, School of Life Sciences, Westlake University, Hangzhou, China.
Nature metabolism
|March 15, 2025
概括
肠道微生物产生抗肥胖的芳香氨基酸代谢物. 像4-基酸 (4HPAA) 这样的特定化合物调节免疫反应和脂质吸收,提供对饮食诱导的体重增加的保护.
科学领域:
- 微生物组研究的研究.
- 代谢学 代谢学 代谢学
- 免疫学 免疫学 免疫学
- 肥胖研究的研究.
背景情况:
- 肥胖是一个全球性健康问题,其原因复杂.
- 肠道微生物在体内脂肪积累中的作用是公认的,但尚未完全理解.
- 将微生物活动与宿主代谢联系在一起的机制需要进一步研究.
研究的目的:
- 为了研究微生物芳香氨基酸代谢物和身体脂肪积累之间的关联.
- 为了确定可以预防饮食引起的肥胖的特定代谢物.
- 通过微生物代谢物阐明与免疫相关的机制,以预防肥胖为基础.
主要方法:
- 对大量中国纵向队列中的血清微生物芳香氨基酸代谢物的分析.
- 给高脂肪饮食的雄性小鼠服用4-基酸 (4HPAA) 和类似物.
- 评估免疫细胞 (T细胞,B细胞,先天性淋巴细胞) 在4HPAA介导的肥胖预防中的作用.
- 研究对肠道粘膜,免疫反应和脂质吸收的影响.
主要成果:
- 在血清微生物芳香氨基酸代谢物和身体脂肪积累之间发现了显著的关联.
- 4-基酸 (4HPAA) 和它的类似物在雄性小鼠中显示出对高脂肪饮食引起的肥胖的保护作用.
- 这些代谢物被证明可以调节免疫反应和通过肠道粘膜吸收脂质.
- 对于这种保护作用,T细胞和B细胞并不必不可少,而先天性淋巴细胞则起到了对抗作用.
结论:
- 特定的微生物代谢物,如4HPAA,可以通过调节宿主的免疫系统和脂质代谢来预防肥胖.
- 肠道微生物代谢物是通过免疫系统调节来预防肥胖的关键分子.
- 这项研究建立了一种通过肠道微生物代谢物调节宿主的新机制,这对肥胖症治疗有意义.
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