系统遗传学的方法揭示了宿主粉酶位点,肠道微生物组和超脂性小鼠的代谢特征之间的关联
Qijun Zhang1, Evan R Hutchison1, Calvin Pan2,3
1Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA.
bioRxiv : the preprint server for biology
|March 11, 2024
概括
宿主基因影响肠道微生物. 我们发现了与特定的细菌群体和代谢功能相关的酶基因变异,影响了小鼠的宿主健康和疾病.
科学领域:
- 微生物学 微生物学
- 遗传学 遗传学 是一个
- 代谢学 代谢学 代谢学
背景情况:
- 宿主基因变异对肠道微生物群落和代谢的影响尚不清楚.
- 混合鼠标多样性小组 (HMDP) 为研究宿主遗传学和心脏代谢特征提供了一个资源.
研究的目的:
- 为了确定与肠道微生物肠型和代谢功能相关的宿主基因组位置.
- 探索宿主酶基因变异,肠道细菌和宿主生理表型之间的关系.
主要方法:
- 来自90个HMDP小鼠菌株的Cecal DNA的元基因组分析.
- 全基因组关联分析以将遗传位置与微生物肠型联系起来.
- 门德尔的随机化将宿主表型与肠道微生物群肠型联系起来.
主要成果:
- 粉酶基因附近的基因位点与Firmicutes和Bacteroidetes的丰度有关,影响碳水化合物代谢.
- 较低的氨酶基因拷贝数与肠道里巴库拉ceae水平的增加相关.
- 具有不同碳水化合物降解能力的独特肠型与遗传变异有关.
- 宿主表型如肝纤维化和HDL胆固醇水平与肠型有关.
结论:
- 主体遗传变异显著影响肠道微生物群落及其代谢功能.
- 氨基酶基因变异代表了宿主遗传和肠道微生物组组成之间的关键联系.
- 由宿主遗传学影响的肠道微生物群肠型与宿主生理和疾病状态有关.
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