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一种细菌性 sialidase 通过一个开创性的肠道共生体来调解生命早期的殖民

Ekaterina Buzun¹, Chia-Yun Hsu¹, Kristija Sejane²

¹Department of Pathology, University of California, San Diego, La Jolla, CA 92093, USA.

Cell host & microbe

|January 16, 2024

概括

一个关键的酶,来自 Bacteroides fragilis 的 NanH,有助于在生命早期建立肠道微生物. 这种酶促进了稳定的殖民和弹性,这对婴儿的健康和发育至关重要.

科学领域:

微生物学微生物学
胃肠病学胃肠病学
发展生物学发展生物学

背景情况:

肠道早期的微生物殖民对长期的健康和发育有重大影响.
关键的物种,如细菌类的 Bacteroides spp. 对于肠道生态系统结构至关重要.
控制适应性早期肠道社区形成的机制尚未完全理解.

研究的目的:

调查 Bacteroides fragilis sialidase NanH 在生命早期肠道殖民中的作用.
阐明南如何调解稳定的粘膜占用率,并调节共生计划.
了解南对微生物传播,主导和弹性的影响.

主要方法:

研究了Nanh在Bacteroides fragilis中的功能.
使用了涉及化甘氨酸 (人乳寡糖,肠) 的模型.
在定义的微生物群落中评估了垂直传播,殖民动态和抗生素恢复.

主要成果:

在 Bacteroides fragilis 中的一种单一的 sialidase,NanH,在生命早期驱动着稳定的粘膜殖民.
纳触发了一个由化甘氨酸介导的开始殖民计划.
纳对于母婴传播至关重要,并促进了 Bacteroides fragilis 的主导地位.
南增强了微生物社区的抗生素治疗后的恢复和恢复能力.

结论:

Bacteroides fragilis NanH是生命早期建立稳定的肠道微生物群的关键因素.
宿主衍生的甘氨酸和像NanH这样的微生物酶参与共同进化的相互作用.
这种由NanH和甘氨酸介导的宿主微生物相互作用,促进了稳定的肠道殖民和健康.

关键词:

开始的殖民化.生命早期的微生物组主体-微生物相互作用人类牛奶中的寡糖类.

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