Staphylococcus aureus entanglement in self-assembling β-peptide nanofibres decorated with vancomycin

Jennifer A.E. Payne, Ketav Kulkarni, Thierry Izore, Alex J. Fulcher, Anton Y. Peleg, Marie Isabel Aguilar, Max J. Cryle, Mark P. Del Borgo

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

Abstract

The increasing resistance of pathogenic microbes to antimicrobials and the shortage of antibiotic drug discovery programs threaten the clinical use of antibiotics. This threat calls for the development of new methods for control of drug-resistant microbial pathogens. We have designed, synthesised and characterised an antimicrobial material formed via the self-assembly of a population of two distinct β-peptide monomers, a lipidated tri-β-peptide (β3-peptide) and a novel β3-peptide conjugated to a glycopeptide antibiotic, vancomycin. The combination of these two building blocks resulted in fibrous assemblies with distinctive structures determined by atomic force microscopy and electron microscopy. These fibres inhibited the growth of methicillin resistant Staphylococcus aureus (MRSA) and associated directly with the bacteria, acting as a peptide nanonet with fibre nucleation sites on the bacteria observed by electron microscopy and confocal microscopy. Our results provide insights into the design of peptide based supramolecular assemblies with antibacterial activity and establish an innovative strategy to develop self-assembled antimicrobial materials for future biomedical application. This journal is

Original languageEnglish
Pages (from-to)2607-2616
Number of pages10
JournalNanoscale Advances
Volume3
Issue number9
DOIs
Publication statusPublished - 7 May 2021

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