Akkermansia muciniphila外膜蛋白Amuc_0904通过促进杯状细胞分化来调节肠道平衡
Liu Yang1, Jianming Yang1, Xueting Kong1
1Tianjin Institute of Immunology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), School of Basic Medical Sciences, Tianjin Medical University, State Key Laboratory of Experimental Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People's Republic of China.
Gut microbes
|December 22, 2025
概括
一种有益的肠道细菌Akkermansia muciniphila通过增加杯状细胞来帮助肠道恢复. 它的外膜蛋白Amuc_0904促进了肠道屏障功能,并保护大肠炎.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
背景情况:
- 阿克尔曼西亚 (Akkermansia muciniphila) 是一种有前途的益生菌,具有治疗潜力.
- 它在维持肠道平衡的精确机制尚未完全理解.
研究的目的:
- 研究A. muciniphila在调节肠道平衡中的作用和机制.
- 为了确定涉及A. muciniphila介导的肠道保护的特定分子.
主要方法:
- 在小鼠的大肠炎恢复期间研究了A. muciniphila殖民.
- 鉴定和描述了外膜蛋白Amuc_0904.4的特征.
- 研究了Amuc_0904与宿主细胞信号通路 (MET,Wnt/β-catenin) 的相互作用.
- 在大肠炎模型中评估了Amuc_0904和工程益生菌的保护作用.
主要成果:
- 在大肠炎恢复期间,A. muciniphila的丰度显著增加.
- Amuc_0904诱导杯状细胞分化,增强肠道屏障的完整性.
- Amuc_0904调节了MET信号,降低了Wnt/β-catenin的活性,并改善了线粒体功能.
- 在小鼠中,Amuc_0904对大肠炎和与大肠炎相关的结直肠癌提供了保护.
结论:
- A. muciniphila通过Amuc_0904介导的杯状细胞诱导和屏障保护促进肠道平衡的恢复.
- Amuc_0904代表了肠道疾病的新型治疗点.
- 表达Amuc_0904的工程益生菌显示出治疗炎症性肠病和相关癌症的潜力.
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