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人类肠道细菌Bacteroides fragilis菌株638R的基因组规模代谢建模
Maxwell Neal1, Deepan Thiruppathy1, Karsten Zengler1,2,3
1Department of Bioengineering, University of California, San Diego, California, United States of America.
PLoS computational biology
|October 30, 2023
概括
这项研究提出了一个新的代谢模型,用于Bacteroides fragilis,一个关键的肠道细菌. 该模型有助于了解饮食如何影响肠道细菌及其在肥胖和IBD等疾病中的作用.
科学领域:
- 微生物学 微生物学
- 系统生物学 系统生物学
- 代谢工程是代谢工程.
背景情况:
- Bacteroides fragilis是一种占主导地位的肠道共生细菌,与宿主代谢和免疫健康有关.
- 它在肥胖和炎症性肠病 (IBD) 中的作用是显著的,但其代谢途径仍然不完全理解.
- 缺乏全面的系统级代谢表征来连接饮食,宿主和B. fragilis代谢.
研究的目的:
- 开发一个基因组规模的Bacteroides fragilis菌株638R的代谢模型.
- 提供关于B. fragilis与人类饮食有关的代谢的全面分析.
- 预测细菌的代谢产品及其对宿主健康的影响.
主要方法:
- 为B. fragilis 638R.构建基因组规模的代谢模型 (iMN674)
- 纳入了1,634个反应,1,362个代谢物和142个使用的基质.
- 利用计算预测增长率,发酵产品和基因基本性.
主要成果:
- 模型iMN674准确地反映了B. fragilis的代谢能力,包括基质利用.
- 预测揭示了生长速度,各种条件下的发酵产品产量以及必要的基因.
- 该模型确定并解决了B. fragilis碳水化合物代谢和运输方面的知识差距.
结论:
- 开发的代谢模型为研究B. fragilis提供了一个强大的平台.
- 它可以合理预测B. fragilis与宿主和环境的代谢相互作用.
- 该资源将促进对肠道微生物组功能和相关疾病的理解.
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