在小麦纤维上由九个核心肠道细菌形成的稳定的多种生物膜的构建和表征
Ting Zhang1,2, Yue Xiao1,2, Hongchao Wang1,2
1State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China. chenwei66@jiangnan.edu.cn.
Food & function
|July 31, 2024
概括
研究人员开发了一种方法,在小麦纤维上创建多种肠道细菌生物膜. 一个由9个细菌菌株组成的社区 (M9) 显示出优异的生物膜形成,在压力下稳定性和复杂的相互作用,为肠道微生物生态提供了洞察力.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 生物膜研究的研究.
背景情况:
- 肠道微生物聚合通常发生在肠道表面和未消化的食物颗粒上,主要是不溶性食纤维 (IDF).
- 关于肠道细菌是否可以在这些饮食成分上形成多种生物膜的研究有限.
研究的目的:
- 研究核心肠道细菌在不溶性食纤维 (IDF) 上形成多种生物膜的过程.
- 评估这些生物膜在各种条件下的稳定性和特性.
主要方法:
- 使用18个核心肠道细菌通过动态发酵方法制备单种和多种生物膜.
- 评估生物膜形成能力,颗粒大小,在pH值和胆盐应激下稳定性.
- 人类便入侵实验和代谢分析,以研究生物膜粘附和相互作用.
主要成果:
- 一个由9个细菌菌株组成的菌群 (M9) 在小麦纤维上表现出最高的生物膜形成能力.
- 在pH和胆盐压力下,M9生物膜稳定,并在复杂的肠道环境中粘附于小麦纤维.
- 与单个物种生物膜相比,多种生物膜显示出更多的代谢产生和复杂的物种间相互作用.
结论:
- 一种动态发酵方法在体外有效地在小麦纤维上制备多种生物膜.
- M9生物膜模型为了解细菌在生物膜结构中对IDF的利用提供了基础.
- 这项研究揭示了肠道细菌生物膜内的跨物种相互作用和生理功能.
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