在大肠炎中操纵微生物群的Axin1的神秘之处
Shari Garrett1,2, Monica C Asada1, Jun Sun1,2,3,4
1Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois Chicago, Chicago, IL, USA.
删除肠道上皮质的Axin1通过增强Akkermansia muciniphila来保护大肠炎. 这项研究揭示了Axin1的存在.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
背景情况:
- 传统上,Axin1被称为Wnt/β-catenin信号调节器.
- Axin1在宿主微生物相互作用中的作用及其对肠道平衡的影响在很大程度上仍未被探索.
研究的目的:
- 为了研究肠表皮Axin1在宿主微生物相互作用中的功能.
- 为了确定Axin1删除对大肠炎和肠道微生物组组成的影响.
- 阐明Axin1影响肠道健康和炎症的机制.
主要方法:
- 使用了淘汰赛小鼠模型,删除了肠道上皮细胞Axin1.1.
- 用德克斯硫酸盐 (DSS) 诱导大肠炎.
- 分析了肠道微生物组的组成,特别是Akkermansia muciniphila的丰富性.
- 评估了Wnt/β-catenin信号传递,细胞增殖,迁移以及杯子/Paneth细胞形态.
主要成果:
- 肠上皮层Axin1删除保护免受DSS诱导的大肠炎.
- 失去Axin1导致Wnt/β-catenin信号传递,细胞增殖和迁移的增加.
- Axin1 缺失特别丰富了Akkermansia muciniphila,它被确定为抗炎的保护因素.
- 玻璃杯和帕内斯细胞的形态变化被观察到,包括改变的Muc2和酶水平.
结论:
- 肠上皮细胞Axin1在调节肠道微生物群的恒常性和对大肠炎的宿主防御方面发挥着至关重要的作用.
- 在特定的肠道细胞中准Axin1为炎症性肠病提供了潜在的治疗策略.
- Axin1影响先天免疫和微生物相互作用,突出了Wnt信号与肠道微生物组调节之间的新联系.
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