流体流结构肠道微生物群生物膜社区通过分发公共产品
Jeremy P H Wong1,2, Michaela Fischer-Stettler3, Samuel C Zeeman3
1Institute of Bioengineering and Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland.
概括
液体流通过影响物种之间的代谢相互作用来塑造肠道细菌群落. 这种机械因素可以促进或抑制生物膜的形成,影响微生物组成和潜在的宿主健康.
科学领域:
- 微生物学 微生物学
- 生物物理学的生物物理.
- 系统生物学 系统生物学
背景情况:
- 肠道共生细菌居住在一个复杂的粘膜环境中.
- 众所周知,化学因素会影响微生物群落,但像流体流动这样的物理力量的作用不太清楚.
研究的目的:
- 研究流体流动对肠道细菌生物膜的空间组织和代谢相互作用的影响.
- 阐明机械力量在塑造肠道微生物群落组成中的作用.
主要方法:
- 在流动生物膜实验中使用了*Bacteroides thetaiotaomicron* (Bt) 和*Bacteroides fragilis* (Bf) 的模型社区.
- 结合计算模拟和实验数据来分析物种相互作用和空间组织.
- 鉴定了德克斯代谢及其副产品作为物种间代谢交换的关键因素.
主要成果:
- 液体流动对肠道生物膜社区的空间组织和组成产生重大影响.
- Bt会代谢德克斯,产生促进Bf生长和生物膜形成的公共产品.
- 流动运输这些代谢副产品,将Bf定位在Bt的下游,但强流可以通过减少公共利益度来抑制Bf生物膜的形成.
结论:
- 机械因素,特别是流体流动,在结构化肠道微生物群落中起着至关重要的作用.
- 由流动影响的物种间代谢交换,有助于肠道生物膜的空间组织.
- 了解肠道中的物理力量对于理解微生物社区动态及其对宿主健康的影响至关重要.
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