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人类病原性细菌对内皮细胞的粘附是由纤维内素的相互作用促进的
Diana J Vaca1, Fabienne Frenzel1, Wibke Ballhorn1
1Institute of Medical Microbiology and Infection Control, Goethe University, Paul Ehrlich Straße 40, 60596, Frankfurt, Germany.
Microbes and infection
|June 21, 2023
概括
人类致病细菌通过与细胞外基质 (ECM) 中的纤维素 (Fn) 相互作用,粘附于血管内皮细胞 (ECs). 删除Fn显著降低了细菌粘附,突出Fn.
科学领域:
- 微生物学 微生物学
- 细胞生物学 细胞生物学
- 传染性疾病 传染性疾病
背景情况:
- 血液中的人类致病细菌必须与内皮细胞 (ECs) 相互作用,以感染和殖民宿主.
- 细胞外基质 (ECM) 的ECs,特别是纤维菌素 (Fn),是潜在的细菌粘附的初始目标.
- 在欧洲共同体的ECM环境中,Fn的表达很高,而且很丰富.
研究的目的:
- 分析EC表达纤维素 (Fn) 在细菌粘附中的一般作用.
- 为了研究Fn在细菌细胞与宿主粘附中的中介作用.
主要方法:
- 在不同的EC中评估ECM编码基因表达.
- 在EC上使用Acinetobacter baumannii,Bartonella henselae,Borrelia burgdorferi和Staphylococcus aureus进行了粘附测试.
- 使用共聚焦激光扫描显微镜观察Fn纤维的细菌聚合.
- 通过静态和动态测试评估了Fn缺乏 (FN1淘汰) ECs的细菌粘附性,并通过qPCR量化.
主要成果:
- 确定Fn是ECs中最高度表达的ECM基因.
- 细菌在EC上表现出与Fn纤维的局部化.
- 从ECM中去除Fn在静态和动态条件下显著降低了细菌对EC的附着性.
结论:
- 内皮细胞 (EC) 细胞外基质 (ECM) 中的纤维素 (Fn) 是细菌粘附的关键媒介.
- 细菌粘合素和Fn之间的相互作用对于各种人类病原性细菌最初附着于ECs至关重要.
- 准Fn介导相互作用可能是防止细菌殖民内皮细胞的策略.
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