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Non-leaching antibacterial cotton fabrics based on lipidated peptides

机译:基于脂化肽的非浸出抗菌棉织物

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A set of lipidated peptides was in situ synthesised on cotton fabrics using Fmoc-based peptide synthesis. The resulting modified surfaces exhibit highly potent antibacterial activities in two Gram-negative bacteria including Escherichia coli (ATCC 8739) and Pseudomonas aeruginosa (ATCC 9027), along with moderate antibacterial activities in a Gram-positive bacterium Staphylococcus aureus (ATCC 6538P). As anticipated from covalently bound antimicrobial moieties, a representative membrane disintegration assay suggested that the modified surfaces inhibited bacteria by disrupting the integrity of bacterial cell membranes. Without non-natural D-peptides used in previous studies, this new class of non-leaching antibacterial surfaces offer potent activities while having more practical and economical productions. Furthermore, biocompatibility studies suggest that a selected set of surfaces show no toxicity, thus rendering them suitable for biomedical applications.
机译:使用基于Fmoc的肽合成方法,在棉织物上原位合成了一组脂化肽。修饰后的表面在两种革兰氏阴性细菌(包括大肠杆菌(ATCC 8739)和铜绿假单胞菌(ATCC 9027)中表现出高度有效的抗菌活性,并在革兰氏阳性菌金黄色葡萄球菌(ATCC 6538P)。如从共价结合的抗微生物部分所预期的,代表性的膜崩解试验表明,经修饰的表面通过破坏细菌细胞膜的完整性来抑制细菌。没有以前的研究中使用的非天然 D 肽,这种新型的非浸出抗菌表面可提供强大的活性,同时具有更实用,更经济的生产方式。此外,生物相容性研究表明,选定的一组表面没有毒性,因此使其适合生物医学应用。

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