尤巴细菌直肠杆菌的排毒机制增加了肠道环境的弹性
bioRxiv : the preprint server for biology
|May 20, 2024
概括
欧细菌直肠菌 (Eubacterium rectale) 是一个 Lachnospiraceae 的微生物,可以缓解肠道炎症和氧化应激. 其产物谷氨酸减少活性氧物种 (ROS) 并降低结肠细胞中的压力基因.
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:
- 拉克诺斯皮拉属 (Lachnospiraceae) 是各种各样的肠道微生物,具有双重作用,可能导致或预防炎症.
- 干白素-10淘汰赛 (IL-10KO) 鼠标表现出肠道失调,但与对照物体有相似的生理学.
- 研究特定的Lachnospiraceae菌株对于了解它们对肠道健康的影响至关重要.
研究的目的:
- 评估五个Lachnospiraceae菌株的遗传变异对减少细胞炎症和活性氧物种 (ROS) 的影响.
- 为了确定Eubacterium rectale是否可以减轻压力结肠细胞中的ROS和氧化水平.
- 阐明E. rectale产品缓解宿主氧化应激的分子机制.
主要方法:
- 培养Lachnospiraceae菌株,并制备无细胞消耗介质 (CFSM).
- 用CFSM治疗应激结肠细胞并测量ROS和氧化水平.
- 多omics分析,包括宿主RNA测序,以确定分子变化.
主要成果:
- 来自Eubacterium rectale的CFSM显著降低了应激结肠细胞中的ROS和氧化水平.
- 由E. rectale生物合成的谷氨酸 (GSH) 被确定为缓解宿主ROS损伤的关键调解剂.
- 主体RNA测序揭示了细胞压力和免疫反应基因的下调,表明微生物产品的疗效.
结论:
- 欧细菌直肠菌具有有益的特性,可以缓解肠道炎症和氧化应激.
- 由E. rectale产生的微生物谷氨在保护宿主细胞免受ROS损伤方面发挥着至关重要的作用.
- E. rectale及其产品代表了管理肠道压力和炎症的潜在治疗策略.
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