来自微生物群的IPA通过调节肠道HMGCS2-介导的生成来保护大肠炎,以促进粘膜的愈合
Yanan Zhang1, Shuyu Tu1,2, Xian Shao3
1Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China.
微生物代谢物英多尔-3-酸 (IPA) 通过刺激干细胞促进肠道愈合. 恢复IPA或BHB有助于从结肠炎中恢复,为炎症性肠病提供治疗潜力.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 代谢学 代谢学 代谢学
背景情况:
- 肠道微生物群对于肠道平衡至关重要.
- 微生物代谢物影响表皮质修复的机制尚未完全理解.
研究的目的:
- 为了识别调节粘膜愈合的微生物代谢物.
- 阐明从微生物代谢物到肠道干细胞功能的信号通路.
主要方法:
- 使用了没有细菌的小鼠模型和细菌Peptostreptococcus russellii.
- 研究了英多尔-3-酸 (IPA) 的作用及其下游效应.
- 分析了基因转录,代谢物产生 (BHB) 和干细胞活性.
主要成果:
- 鉴定了三甲的代谢产物 indole-3-propionic acid (IPA) 作为粘膜愈合的关键调节剂.
- IPA在上皮细胞中激活PPARα,增加HMGCS2的表达和BHB的产生.
- BHB刺激LGR5+肠干细胞,增强上皮细胞的再生.
- 饮食中的托芬和特定的食源保持IPA水平,这对结肠炎恢复至关重要.
- 恢复IPA或BHB可以减少炎症和屏障缺陷.
结论:
- 涉及IPA和BHB的微生物群-代谢物-干细胞轴对肠道修复至关重要.
- 这个轴代表了炎症性肠道疾病和障碍障碍的潜在治疗标.
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