微生物组产生的尼古丁酸控制着结肠的区域性身份和受伤易感性
Jérémie Rispal1, Jasmine R Garcia1, Brisa Palikuqi1
1Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA.
Cell
|March 11, 2026
概括
肠道微生物组通过产生尼古丁酸来建立结肠区域化,这促进了结肠细胞的身份,并保护其免受伤害. 这种依赖微生物群的区域化在人类疾病中发生了变化.
科学领域:
- 胃肠病学 胃肠病学
- 微生物学 微生物学
- 细胞生物学 细胞生物学
背景情况:
- 肠上皮的区域结构对功能至关重要,但其建立和疾病影响尚不清楚.
- 疾病易感性往往在肠道内表现出区域偏差,这凸显了理解区域化的重要性.
- 肠道微生物组在塑造肠道区域化的作用在很大程度上尚未被探索.
研究的目的:
- 调查肠道微生物组在建立结肠区域化中的作用.
- 确定微生物组诱导的结肠区域化如何影响疾病易感性.
- 研究人类结肠中的区域化及其在疾病状态中的变化.
主要方法:
- 利用无菌小鼠模型来评估微生物组缺失对结肠区域化的影响.
- 分析了微生物代谢物,特别是尼古丁酸,以及它们对结肠细胞基因表达 (Pparα) 的影响.
- 检查了健康和疾病状态的人体受试者的结肠组织.
主要成果:
- 缺乏微生物组的小鼠表现出被破坏的近距离结肠细胞身份.
- 靠近的结肠微生物组产生尼古丁酸,诱导Pparα表达并建立靠近的结肠细胞身份.
- 在小鼠中,微生物组诱导的近位标识给予了对肠道组织损伤的保护.
- 人的结肠在区域上是不同的,并且在某些疾病中失去近邻的身份.
结论:
- 肠道微生物组对于建立结肠区域化和近距离结肠细胞身份至关重要.
- 来自微生物组的尼古丁酸在通过Pparα诱导近端结肠细胞身份方面发挥着关键作用.
- 微生物组介导的区域化提供了对肠道损伤的保护,这对人类结肠疾病有影响.
关键词:
结肠结肠结肠结肠是什么意思结肠细胞是什么意思德克斯酸硫酸盐是什么意思它的表皮质 (epithelium) 是一个表皮质.主体-微生物群相互作用炎症性肠病是一种炎症性肠病.代谢 代谢 代谢 代谢微生物组是一个微生物组.尼古丁酸是一种尼古丁酸.地区化地区化.更多相关视频
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