在体外开发的猪肠道微生物生态系统的结构和功能表征
LinShu Liu1, Jenni A Firrman2, Adrienne B Narrowe2
1Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Wyndmoor, PA, 19038, USA. linshu.liu@usda.gov.
Scientific reports
|July 10, 2025
概括
这项研究将猪肠道微生物在动态模拟器 (SPIME) 中与体内样本进行比较. 虽然微生物组成有显著差异,但肠道模拟器在很大程度上保留了微生物功能,这表明它对于研究肠道健康的实用性.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 生物工程是生物工程.
背景情况:
- 哺乳动物的消化道拥有复杂的微生物群落,影响健康.
- 动态肠道模型为研究这些社区提供受控环境.
- 在体外模型与体外数据的验证对于可靠的研究至关重要.
研究的目的:
- 评估猪肠模拟器 (SPIME) 和猪肠体内微生物群落和代谢物之间的相似性.
- 验证机械肠道模型中的体外实验结果是否与体内发现结果密切相匹配.
主要方法:
- 来自四头猪的便样本被用来接种猪肠道微生物生态系统模拟器 (SPIME).
- 在SPIME中培养微生物群落,直到达到稳定状态.
- 浅射门元基因组测序和非向的代谢学被用于分析.
- 在SPIME和体内样本之间比较分类丰富度,元基因组组合基因组 (MAGs) 和代谢物概况.
主要成果:
- 只有12.1%的物种和15%的销售许可证在SPIME和源猪结肠之间共享.
- 尽管组成的差异,功能丰富,MAG级特征,CAZymes和代谢物配置文件显示显著的功能保存.
- 环境选择和细菌功能冗余被确定为推动这些观察的关键因素.
结论:
- 与体内样本相比,SPIME模型表明,尽管微生物组成发生了显著的变化,但功能性保存仍然很大.
- 在动态模型中,环境选择和功能冗余在维持肠道微生物功能方面发挥着关键作用.
- 这些发现支持了像SPIME这样的动态肠道模型对肠道微生物生态和功能体外研究的有用性.
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