Bonvin, Etienne; Personne, Hippolyte; Paschoud, Thierry; Reusser, Jérémie; Gan, Bee-Ha; Luscher, Alexandre; Köhler, Thilo; van Delden, Christian; Reymond, Jean-Louis (2023). Antimicrobial Peptide-Peptoid Hybrids with and without Membrane Disruption. ACS infectious diseases, 9(12), pp. 2593-2606. American Chemical Society 10.1021/acsinfecdis.3c00421
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bonvin-et-al-2023-antimicrobial-peptide-peptoid-hybrids-with-and-without-membrane-disruption.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (5MB) | Preview |
Among synthetic analogues of antimicrobial peptides (AMPs) under investigation to address antimicrobial resistance, peptoids (N-alkylated oligoglycines) have been reported to act both by membrane disruption and on intracellular targets. Here we gradually introduced peptoid units into the membrane-disruptive undecapeptide KKLLKLLKLLL to test a possible transition toward intracellular targeting. We found that selected hybrids containing up to five peptoid units retained the parent AMP's α-helical folding, membrane disruption, and antimicrobial effects against Gram-negative bacteria including multidrug-resistant (MDR) strains of Pseudomonas aeruginosa and Klebsiella pneumoniae while showing reduced hemolysis and cell toxicities. Furthermore, some hybrids containing as few as three peptoid units as well as the full peptoid lost folding, membrane disruption, hemolysis, and cytotoxicity but displayed strong antibacterial activity under dilute medium conditions typical for proline-rich antimicrobial peptides (PrAMPs), pointing to intracellular targeting. These findings parallel previous reports that partially helical amphiphilic peptoids are privileged oligomers for antibiotic development.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) 04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) |
UniBE Contributor: |
Bonvin, Etienne, Personne, Hippolyte Jean-Claude René, Paschoud, Thierry, Reusser, Jérémie, Gan, Bee Ha, Reymond, Jean-Louis |
Subjects: |
500 Science > 570 Life sciences; biology 500 Science > 540 Chemistry 600 Technology > 610 Medicine & health |
ISSN: |
2373-8227 |
Publisher: |
American Chemical Society |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
11 Dec 2023 16:04 |
Last Modified: |
12 Dec 2023 04:16 |
Publisher DOI: |
10.1021/acsinfecdis.3c00421 |
PubMed ID: |
38062792 |
Uncontrolled Keywords: |
Antimicrobial peptides membrane disruption peptoids secondary structure |
BORIS DOI: |
10.48350/190066 |
URI: |
https://boris.unibe.ch/id/eprint/190066 |
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