Integrated evolutionary analysis reveals antimicrobial peptides with limited resistance.

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ID: 57734
2019
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Abstract
Antimicrobial peptides (AMPs) are promising antimicrobials, however, the potential of bacterial resistance is a major concern. Here we systematically study the evolution of resistance to 14 chemically diverse AMPs and 12 antibiotics in Escherichia coli. Our work indicates that evolution of resistance against certain AMPs, such as tachyplesin II and cecropin P1, is limited. Resistance level provided by point mutations and gene amplification is very low and antibiotic-resistant bacteria display no cross-resistance to these AMPs. Moreover, genomic fragments derived from a wide range of soil bacteria confer no detectable resistance against these AMPs when introduced into native host bacteria on plasmids. We have found that simple physicochemical features dictate bacterial propensity to evolve resistance against AMPs. Our work could serve as a promising source for the development of new AMP-based therapeutics less prone to resistance, a feature necessary to avoid any possible interference with our innate immune system.
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Authors Spohn, Réka;Daruka, Lejla;Lázár, Viktória;Martins, Ana;Vidovics, Fanni;Grézal, Gábor;Méhi, Orsolya;Kintses, Bálint;Számel, Mónika;Jangir, Pramod K;Csörgő, Bálint;Györkei, Ádám;Bódi, Zoltán;Faragó, Anikó;Bodai, László;Földesi, Imre;Kata, Diána;Maróti, Gergely;Pap, Bernadett;Wirth, Roland;Papp, Balázs;Pál, Csaba;
Journal Nature communications
Year 2019
DOI 10.1038/s41467-019-12364-6
URL
Keywords
TNF-ι inflammation viral load nfκb antibodies il-1β hhv-8 il-12

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