在小鼠大肠炎中以基为媒介的刺道激活和肠道微生物群调节
Xixiang Huang1, Tong Sun1, Linxia Xu1
1Department of Gastroenterology, The First Affiliated Hospital of Bengbu Medical University, No. 287, Changhuai Road, Bengbu, 233000, Anhui, China.
Scientific reports
|August 23, 2025
概括
通过调节刺信号通路和改变肠道微生物群组成,提摩 (TQ) 显示出治疗性结肠炎的前景. 这种天然化合物可能为这种炎症性肠道疾病提供一种新的治疗方法.
科学领域:
- 胃肠病学
- 免疫学
- 微生物学
背景情况:
- 性结肠炎 (UC) 是一种具有复杂病因的慢性炎症性肠病.
- 目前对UC的治疗有局限性和副作用.
- 越来越多地认识到刺信号通路和肠道微生物群在UC的发病过程中的作用.
研究的目的:
- 在性结肠炎的小鼠模型中研究基的治疗潜力.
- 阐明TQ的作用背后的机制,重点关注刺信号通路和肠道微生物群.
- 评估TQ对炎症标志物和肠道屏障完整性的影响.
主要方法:
- 建立一个UC鼠标模型.
- 低剂量 (20 mg/ kg) 和高剂量 (80 mg/ kg) 的提摩.
- 酶相关免疫吸收试验 (ELISA) 用于血清细胞因子分析 (IL-1β,TNF-α,IL-10,TGF-β).
- 对于结肠基因和蛋白质表达的RT-qPCR,西部斑块和免疫组织化学 (刺途径组件,ZO-1,奥克卢丁).
- 用RNA测序 (RNA-seq) 对肠道微生物群体组成进行综合分析.
主要成果:
- 提摩治疗改善了临床结果,包括降低疾病活性指数和正常化体重.
- 在结肠中,TQ上调了刺信号通路 (Shh,Smo,Gli1,Ptch1) 和紧结蛋白 (ZO-1,Occludin) 的关键组成部分.
- TQ调节了肠道微生物组成,增加了有益的细菌 (如Bacteroidota,Akkermansiaceae) 并减少了有害的细菌 (如Proteobacteria,Enterobacteriaceae).
- 在周围血液中,TQ抑制了促炎细胞因子 (IL- 1β,TNF- α,TGF- β),并促进了抗炎细胞因子IL- 10.
结论:
- 基对性结肠炎具有显著的治疗潜力.
- 通过调节子信号通路并恢复肠道屏障功能来发挥其作用.
- TQ对肠道微生物生态系统产生积极影响,这表明它在调节与UC相关的肠道失调中发挥了作用.
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