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比菲多细菌的初级继承驱动新生儿微生物群组中的病原体耐药性
Yan Shao1, Cristina Garcia-Mauriño2, Simon Clare3
1Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK. ys4@sanger.ac.uk.
Nature microbiology
|September 6, 2024
概括
新生儿的早期肠道微生物群可以形成不同的状态. 双杆菌,特别是Bifidobacterium breve,促进稳定的肠道微生物群落和婴儿的病原体耐药性.
科学领域:
- 微生物学 微生物学
- 人类微生物组研究研究
- 新生儿生态学 新生儿生态学
背景情况:
- 微生物社区的组建始于出生时,受到母体和环境微生物的影响.
- 生态理论表明,早期殖民者对微生物社区的发展产生了重大影响,但新生儿肠道的优先影响尚未得到充分理解.
研究的目的:
- 研究新生儿肠道微生物群组中的微生物优先影响.
- 在早期的人类肠道微生物组中描述不同的社区状态.
- 了解先驱物种在塑造长期微生物社区结构和功能中的作用.
主要方法:
- 对1288名英国新生儿进行了纵向便元基因组分析.
- 新生儿微生物群的分层成不同的社区状态.
- 没有细菌的小鼠模型来评估病原体的殖民抵抗力.
主要成果:
- 新生儿肠道微生物组组合导致了三个不同的社区状态,受母亲年龄和种族等因素的影响.
- 一个由Enterococcus faecalis主导的状态显示不稳定的组装和持久的病原体存在.
- 由Bifidobacterium (B. longum,B. breve) 主导的国家表现出稳定的组装和病原体殖民抵抗力,与母乳适应有关.
- 在小鼠模型中,Bifidobacterium breve表现出优先效应并赋予病原体耐药性.
结论:
- 开创性肠道微生物在生命早期的微生物群组合中起着至关重要的作用.
- 双杆菌,特别是Bifidobacterium breve,对于在新生儿中建立稳定的肠道社区和病原体耐药性至关重要.
- 双杆菌的菌株特异性适应导致它们在富含母乳的环境中作为主要殖民者取得成功.
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