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<p>Antibiotic resistance is a global health threat, driving the need for new molecules that kill bacteria via nontraditional mechanisms. Here, we present a computational de novo design strategy for α-helical peptides that self-assemble into large, stable and membrane-spanning nanopores with antimicrobial activity, including in vivo efficacy against drug-resistant pathogens. Molecular dynamics simulations guided the selection of sequences for transmembrane barrel-stave pore formation, which were validated by microscopy, electrophysiology and fluorescence assays. Using computational and experimental analyses, including negative design controls, we developed general design guidelines and 52 modular sequence templates with tunable antimicrobial, pore-forming properties. Mechanistic studies confirmed bacterial cytoplasmic membrane disruption via designed nanopore formation. A tuned lead peptide selectively killed drug-resistant ESKAPEE bacteria, including <i>Acinetobacter baumannii</i>, without harming human cells, and showed anti-infective efficacy in preclinical mouse infection models. The framework presented here enables the design of synthetic peptide nanopores for precision antimicrobials, anticancer agents, molecular sensors and delivery systems.</p><p></p>

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Computational design of antimicrobial peptide nanopores

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年8月3日

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  • Rahul Deb,
  • Marcelo D. T. Torres,
  • Ivo Kabelka,
  • Jan Přibyl,
  • Kateřina Dvořáková Bendová,
  • Edo Vreeker,
  • Markéta Koběrská,
  • Gabriela Balíková Novotná,
  • Miloš Petřík,
  • Giovanni Maglia,
  • Cesar de la Fuente-Nunez,
  • Robert Vácha

摘要

Antibiotic resistance is a global health threat, driving the need for new molecules that kill bacteria via nontraditional mechanisms. Here, we present a computational de novo design strategy for α-helical peptides that self-assemble into large, stable and membrane-spanning nanopores with antimicrobial activity, including in vivo efficacy against drug-resistant pathogens. Molecular dynamics simulations guided the selection of sequences for transmembrane barrel-stave pore formation, which were validated by microscopy, electrophysiology and fluorescence assays. Using computational and experimental analyses, including negative design controls, we developed general design guidelines and 52 modular sequence templates with tunable antimicrobial, pore-forming properties. Mechanistic studies confirmed bacterial cytoplasmic membrane disruption via designed nanopore formation. A tuned lead peptide selectively killed drug-resistant ESKAPEE bacteria, including Acinetobacter baumannii, without harming human cells, and showed anti-infective efficacy in preclinical mouse infection models. The framework presented here enables the design of synthetic peptide nanopores for precision antimicrobials, anticancer agents, molecular sensors and delivery systems.