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Probiotic Studies in Neonatal Mice Using Gavage
Published on: January 27, 2019
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新生儿小鼠的微生物群集合是无特定病原体的新生儿小鼠
Elizabeth A Kennedy1, James S Weagley1, Andrew H Kim1
1Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, Missouri, USA.
bioRxiv : the preprint server for biology
|January 27, 2025
概括
早期的小鼠微生物组是在出生后几周内建立起来的,其组成在21日稳定下来. 了解这种微生物发展对于设计新生小鼠有效的疾病模型至关重要.
科学领域:
- 微生物学 微生物学
- 发育生物学 发展生物学
- 动物模型 动物模型
背景情况:
- 新生儿小鼠是人类婴儿疾病的重要模型,其中微生物群落影响疾病的进展.
- 对于小鼠微生物组的生命早期发展,人们对其了解甚少,这阻碍了这些模型的最佳使用.
- 这项研究调查了C57BL/6和BALB/c小鼠从出生到成年时的细菌微生物群的组装.
研究的目的:
- 描述新生儿小鼠微生物组的时间组合.
- 在生命早期识别关键细菌种群及其来源.
- 提供对小鼠疾病模型实验设计的见解.
主要方法:
- 对C57BL/6和BALB/c小鼠的便微生物组分析,从出生到成年.
- 短读猎枪测序用于元基因组概况.
- 基因组组合组的基因组组合,用于先驱物种的菌株水平分析.
主要成果:
- 幼幼的便微生物组最初很简单,由少数具有不清楚母体起源的先驱种群主导.
- 微生物群的多样化大约在第14天左右开始,与共和固体食物消费相吻合.
- 到第21天,幼和母的便细菌群体没有显著差异;菌株水平分析确定了关键的先驱基因.
结论:
- 鼠微生物组组装是一个在出生后的头几周内发生的过程,在第21天基本完成.
- 了解这种发育时间表有助于为小鼠疾病模型设计有针对性的干预措施.
- 开拓者细菌菌株的起源可能是多样化的,在多个母体部位的低水平存在.
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