相关实验视频

Updated: Sep 19, 2025

Standardized In vitro Assays to Visualize and Quantify Interactions between Human Neutrophils and Staphylococcus aureus Biofilms

Standardized In vitro Assays to Visualize and Quantify Interactions between Human Neutrophils and Staphylococcus aureus Biofilms

Published on: June 8, 2022

骨科植入物上的 Staphylococcus aureus 生物膜成熟的蛋白质学签名

C Kuik¹, C de Boer², S W G van Hoogstraten²

¹Maastricht MultiModal Molecular Imaging Institute (M4i), Maastricht University, Maastricht, the Netherlands.

|June 16, 2025

概括

骨科植入物的表面粗性会影响细菌生物膜的发展. 这项研究使用蛋白质组学来识别Staphylococcus aureus生物膜中的关键蛋白质,揭示了新抗菌疗法的标.

科学领域:

生物材料科学生物材料科学
微生物学微生物学
蛋白质组学是指蛋白质组学.

背景情况:

植入物相关的感染是骨科的一个主要挑战,通常与细菌生物膜形成有关.
整形植入物的表面特性 (粗性,多孔性) 影响骨质整合,但也可以促进细菌粘附.
对植入物上的生物膜感染开发有效的治疗方法仍然至关重要.

研究的目的:

在各种骨科植入物表面地形上研究未成熟和成熟的金黄色葡萄球菌生物膜之间的蛋白质差异.
识别潜在的蛋白质点,用于针对植入物相关感染的新型抗菌策略.
评估表面粗度对生物膜发育和细菌反应的影响.

主要方法:

开发一个自动化的单固相增强样品准备协议 (SP3) 工作流程.
在不同粗度的 (Ti) 表面 (抛光,金刚石喷射) 和用等离子体喷射的微孔酸涂层表面 (等离子体孔) 上种植的金黄色葡萄球菌生物膜的蛋白质组学分析.
在不成熟和成熟的生物膜之间比较蛋白质表达特征.

主要成果:

成熟的生物膜表现出与毒素活性和三碳酸 (TCA) 循环相关的蛋白质增加.
未成熟的生物膜显示了参与结合,催化活动和新陈代谢的蛋白质水平升高.
表面地形对S. aureus生物膜的蛋白质结构和发育阶段产生重大影响.

结论:

细菌的蛋白质反应在不成熟和成熟的生物膜之间有所不同,受植入物表面地形的影响.
已识别的蛋白质代表了开发新抗微生物涂层或骨科植入物治疗的潜在目标.
蛋白质组学是评估植入物相关感染中的细菌和宿主反应的宝贵工具.

关键词:

抗菌药物反症 (AMR) 是一种细菌感染是一种细菌感染.生物膜是一种生物膜.整形外科的植入物.蛋白质组学是指蛋白质组学.

更多相关视频

A Zebrafish Embryo Model for In Vivo Visualization and Intravital Analysis of Biomaterial-associated Staphylococcus aureus Infection

A Zebrafish Embryo Model for In Vivo Visualization and Intravital Analysis of Biomaterial-associated Staphylococcus aureus Infection

Published on: January 7, 2019

A Unique Mouse Model for Quantitative Assessment of Biofilm Formation on Surgical Implants in Subcutaneous Abscess

A Unique Mouse Model for Quantitative Assessment of Biofilm Formation on Surgical Implants in Subcutaneous Abscess

Published on: June 6, 2025

相关概念视频

Biofilms

Biofilms

Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...

Bacterial Signaling

Bacterial Signaling

Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...