肠道平衡与年龄相关的变化是微生物群依赖的
Yingli Jing1,2, Qiuying Wang1,2, Fan Bai1,2
1China Rehabilitation Science Institute, China Rehabilitation Research Center, Beijing Key Laboratory of Neural Injury and Rehabilitation, and School of Rehabilitation Medicine, Capital Medical University, Beijing, China.
NPJ biofilms and microbiomes
|March 26, 2025
概括
在老年小鼠中重新塑造肠道微生物群改善了肠道屏障完整性和免疫功能. 这些发现表明,针对微生物群的干预措施可以对抗与年龄相关的生理衰退.
科学领域:
- 胃肠道学和衰老研究研究
- 微生物组科学 微生物组科学
- 免疫学 免疫学 免疫学
背景情况:
- 衰老会破坏肠道平衡,影响肠道屏障的完整性和免疫反应.
- 肠道微生物群在与年龄相关的肠道压力和免疫力中的作用需要进一步阐明.
- 现有数据表明,微生物群调节可能改善与衰老相关的不平衡.
研究的目的:
- 研究肠道微生物群对肠道屏障完整性和衰老期间免疫反应的影响.
- 探索针对微生物群的干预措施,以改善与衰老相关的生理衰退的潜力.
- 确定肠道微生物群组成和与年龄相关的基因表达变化之间的关系.
主要方法:
- 在年轻和老小鼠中对结肠和介质淋巴结进行转录组测序和生物信息学分析.
- 在老年小鼠中使用抗生素减少微生物群.
- 从年轻小鼠移植到老小鼠的便微生物群移植 (FMT).
- 评估肠道屏障完整性和炎症标志物.
主要成果:
- 老老鼠表现出肠道屏障完整性受损以及与压力和免疫反应相关的基因表达改变.
- 肠道微生物群与老年小鼠的差异性表达基因有显著的关联.
- 老老鼠的微生物群枯竭改善了肠道屏障的完整性,并减少了炎症.
- 从年轻小鼠到老小鼠的FMT恢复了肠道屏障的完整性和免疫平衡.
结论:
- 肠道微生物群在维持肠道屏障完整性和衰老过程中免疫平衡中发挥着至关重要的作用.
- 准肠道微生物群对于治疗与年龄相关的生理衰退的治疗干预具有显著的潜力.
- 进一步的研究是有必要的,以充分理解和利用微生物群调节在衰老的好处.
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