细胞表面粘附体中的功能冗余性对细胞间相互作用和聚合至关重要
Tristan W Wang1, Dimitrios Sofras2, Daniel Montelongo-Jauregui1
1Department of Oncology and Diagnostic Sciences, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA.
Research square
|April 2, 2024
概括
黄菌使用互补的粘附蛋白Als5和Scf1形成生物膜,这对其在医疗保健环境中的持久性和毒性至关重要. 了解这些真菌粘合素是对抗这种新兴病原体的关键.
科学领域:
- 菌类学 菌类学是指菌类学.
- 传染性疾病 传染性疾病
- 微生物病原体的产生
背景情况:
- 黄是一种多药耐药的真菌病原体,引起侵入性感染.
- 在C. auris.中存在不同的聚合性和非聚合性生长表型.
- 生物膜的形成是C. auris持续性和毒性的关键因素.
研究的目的:
- 确定参与C. auris聚合生长和生物膜形成的关键细胞表面粘合素.
- 阐明特定粘附素在调解细胞-细胞粘附和聚合中的作用.
- 研究粘合素在C. auris中的功能冗余和互补作用.
主要方法:
- 转录分析以识别聚合生物膜中的上调附着素.
- 对粘附素 Als5 和 Scf1.1 的零突变的生成和评估.
- 在体外和体内生物膜形成测试.
- 单细胞原子力光谱测量细胞粘附力.
主要成果:
- 鉴定出Als5和Scf1是聚合性C. auris生物膜中调高的关键粘附蛋白.
- 缺少Als5或Scf1的突变体显示细胞对细胞的粘附和聚合受损.
- 结合Als5和Scf1的删除导致聚合和生物膜形成的重大缺陷.
- 单细胞原子力光谱学证实了Als5和Scf1在细胞粘附中的互补作用.
结论:
- Als5和Scf1是关键的互补粘附蛋白,调解C. auris的细胞相互作用和生物膜发育.
- 细胞壁蛋白的功能多样性允许C. auris.的适应和持久性.
- 准这些粘附蛋白可能为对抗C. auris感染提供新的策略.
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