Fusobacterium nucleatum 通过跨物种生物膜形成增强了Vibrio cholerae的肠道适应
Guozhong Chen1,2, Jiamin Chen1, Xiangfeng Wang1
1Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
Microorganisms
|January 28, 2026
概括
Fusobacterium nucleatum通过特定的代谢物增强了Vibrio cholerae生物膜的形成,有助于在肠道中共同感染. 这一发现揭示了V. cholerae肠道适应性的新机制.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 我们的肠道微生物组.
背景情况:
- 生物膜的形成对于宿主肠道中的Vibrio cholerae生存至关重要.
- 以前对V. cholerae生物膜的研究主要集中在单个物种和遗传调节上.
- 涉及V. cholerae和其他肠道病原体的双种生物膜的作用在很大程度上仍未被探索.
研究的目的:
- 调查V. cholerae和其他肠道细菌之间双种生物膜形成的可能性.
- 确定促进V. cholerae肠道殖民的特定细菌相互作用和分子机制.
- 了解共感染病原体可能如何影响V. cholerae的病原性.
主要方法:
- 从患者和健康样本中识别与V. cholerae共聚的细菌.
- 不针对性的代谢分析,以确定影响V. cholerae生物膜形成的细菌代谢物.
- 基因表达分析以确定已识别的代谢物对V. cholerae的调节作用.
- 使用成年老鼠模型进行感染研究,以评估共感染对V. cholerae肠道适应性的影响.
主要成果:
- 鉴定出Fusobacterium nucleatum是一种与V. cholerae.共同聚集的物种.
- 发现F.核衍生代谢物,特别是6-素,显著增强了V.霍乱生物膜的形成.
- 这些代谢物被证明可以调节V. cholerae生物膜调节基因,vpsT.
- 在小鼠中与F. nucleatum和V. cholerae同时感染,导致V. cholerae与V. cholerae单一感染相比,肠道适应能力提高.
结论:
- F. nucleatum通过特定的分泌代谢物积极促进V. cholerae生物膜的形成和肠道殖民.
- 通过F. nucleatum代谢物对vpsT的上调调节是推动共同感染期间增强V. cholerae适应性的关键机制.
- 这项研究阐明了一种新的途径,即开始性或致病性细菌可以促进V. cholerae感染,影响我们对多微生物肠道感染的理解.
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