牛奶和粘素甘氨酸组合合成婴儿肠道微生物群结构
Maryse D Berkhout1, Athanasia Ioannou1, Yuvashankar Kavanal Jayaprakash1
1Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.
FEMS microbiology ecology
|June 25, 2025
概括
人类牛奶寡糖 (HMO) 和粘液糖形成了婴儿的肠道微生物. 粘真菌结构是Akkermansia muciniphila的关键,突出显示了婴儿肠道微生物组在发展中的利基差异化.
科学领域:
- 微生物组研究 微生物组研究
- 葡萄糖生物学 葡萄糖生物学
- 婴儿营养 婴儿营养
背景情况:
- 甘氨酸对婴儿肠道微生物群发育至关重要.
- 人类牛奶寡糖 (HMO) 作为益生菌,刺激肠道微生物.
- 婴儿肠道粘液层也含有甘氨酸,吸引特定的细菌.
研究的目的:
- 为了研究婴儿肠道微生物群落如何形成,当饮食 (HMO) 和粘液糖都可用时.
- 了解甘氨酸在细菌竞争和社区结构中的作用.
主要方法:
- 创建一个合成的婴儿肠道微生物社区 (BabyBac) 与专业的甘氨酸降解剂和交叉养剂.
- 在体外评估社区的各种组合的饮食衍生型甘氨酸 (HMO,GOS,FOS) 和粘液甘氨酸.
- 对社区组成和新陈代谢产量的分析,以应对不同的甘氨酸条件.
主要成果:
- 糖甘的组合显著改变了微生物群体的组成和代谢输出.
- 菌素和HMO是社区变异的主要驱动因素.
- HMO偏爱糖甘降解剂和交叉养剂,而粘氨酸的存在对于Akkermansia muciniphila的生存至关重要,如果没有完整的粘氨酸结构,则无法竞争.
结论:
- 饮食和粘液甘氨酸之间的相互作用推动了婴儿肠道微生物群的利基差异化.
- Akkermansia muciniphila 需要完整的粘素结构来有效地与其他婴儿相关的细菌竞争.
- 了解甘氨酸利用是理解婴儿肠道微生物组组合的关键.
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