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Updated: Feb 28, 2026
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急性高切割应力增强了真菌细胞/基板的粘附性
Md Adnan Karim1, Dennis LaJeunesse1
1Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina Greensboro, Greensboro, North Carolina, USA.
Microbiology spectrum
|February 27, 2026
概括
高剪压通过激活细胞壁蛋白质迅速增强酵母粘附,使其更快地适应表面. 这一发现对于控制微生物生物膜和设计医疗器械至关重要.
科学领域:
- 微生物学 微生物学
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
背景情况:
- 机械力,特别是剪流,显著影响微生物生物膜的形成.
- 生物膜保护微生物免受环境威胁,最初的细胞粘附是关键步骤.
- 像Flo11p和ALS1p这样的真菌粘合素介于附着,其活性由外部剪切力调节.
研究的目的:
- 为了研究急性,高水力动态剪切应力对*Saccharomyces cerevisiae*和*Candida albicans*的粘附性的影响.
- 为了确定高切削力是否可以快速增强真菌细胞粘附.
主要方法:
- 使用微流体来控制剪切应力暴露.
- 开发并采用了一种基于花的新型测定方法,即珠子粘附沉测定方法,以量化酵母粘附.
- 暴露酵母细胞在高值水平的剪切菌株.
主要成果:
- 短时间暴露在高水力动力切割应力下,显著提高了*S. cerevisiae*和*C. albicans*的粘合能力.
- 细胞表现出对高剪切力的快速适应性反应,增加了它们的粘附力.
- 这种反应涉及到细胞壁粘附蛋白的激活和重组.
结论:
- 细胞可以通过增加它们的表面粘附来快速适应高剪切环境.
- 了解这种快速适应对于旨在控制真菌生物膜的战略至关重要.
- 这些发现对生物医学设备的设计产生了影响,以防止或管理微生物殖民.
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