期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 167, 期 -, 页码 66-75出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.11.143
关键词
Surface modification; Cellulose film; Anti-adhesion activity
资金
- Marine Economy Innovation and Development Project [GD2012-D01-002]
- Marine Fishery Science and Technology Promotion Project of Guangdong [A1201301C06]
- Guangdong Academy of Sciences [2017GDASCX-0103, 2017A070701019]
- Department of Science and Technology of Guangdong Province [2019GDASYL-0402002]
In this study, the effectiveness of surface-decorated aryl (beta-amino) ethyl ketones (AAEK) on cellulose films to improve anti-adhesion ability was explored, showing excellent anti-adhesion ability to Staphylococcus aureus and inhibition of bacterial biofilm formation. Additionally, AAEK-CF exhibited no cytotoxicity to mammalian cells and allowed for normal cell growth on the modified surface.
Bacterial adhesion infection caused by medical materials in clinical application has become a serious threat, and it urgently needs new strategies to deal with these clinical challenges. The purpose of this study is to explore the effectiveness of surface-decorated aryl (beta-amino) ethyl ketones (AAEK), a promising sorting enzyme A (SrtA) inhibitor of Staphylococcus aureus, to improve the anti-adhesion ability of biomaterials. AAEK was covalently grafted onto cellulose films (CF) via copper-catalyzed azide-alkyne 1, 3-dipolar cycloaddition click reaction. The data of contact angle measurements, ATR-FTIR and XPS proved the successful covalent attachment of AAEK-CF, and the antimicrobial efficacy of AAEK coating was assessed by CFUs, crystal violet staining, scanning electron microscopy and Living/Dead bacteria staining assay. The results illustrated that AAEK-CF exhibited excellent anti-adhesion ability to Staphylococcus aureus, and significantly reduced the number of bacteria adhering to the film. More importantly, AAEK-CF could hinder the formation of bacterial biofilm. Furthermore, AAEK-CF indicated no cytotoxicity to mammalian cells, and the cells could grow normally on the modified surface. Hence, our present work demonstrated that the grafting of the SrtA inhibitor-AAEK onto cellulose films enabled to combat bacterial biofilm formation in biomedical applications. (C) 2020 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据