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Harnessing RGDS peptides to regulate bacterial-host interfaces for targeted antimicrobial therapy.

Yuting Feng1, Wenyue Xie1, Zhuo Wan1

  • 1Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China.

Journal of Controlled Release : Official Journal of the Controlled Release Society
|June 3, 2025
PubMed
Summary

A novel mechanobiology-based strategy uses Arg-Gly-Asp-Ser (RGDS) peptides to disrupt bacterial adhesion, combating multidrug-resistant infections. This approach significantly reduces antibiotic dosage and shows efficacy in animal models.

Keywords:
Adhesion forcesAntibiotic adjuvantAntimicrobial strategyBacterial-host interfacial interactionRGDS peptides

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Area of Science:

  • Microbiology
  • Biophysics
  • Infectious Diseases

Background:

  • Multidrug-resistant bacterial infections present a critical global health challenge.
  • Host-directed antimicrobial strategies offer a promising alternative to traditional antibiotics.
  • Understanding bacterial-host interactions is key to developing new treatments.

Purpose of the Study:

  • To propose and validate a mechanobiology-based host-directed antimicrobial strategy using Arg-Gly-Asp-Ser (RGDS) peptides.
  • To investigate the effect of RGDS peptides on bacterial-host adhesion forces.
  • To evaluate the efficacy of RGDS as an antibiotic adjuvant against multidrug-resistant bacteria.

Main Methods:

  • Utilized Arg-Gly-Asp-Ser (RGDS) peptides to interfere with bacterial-host adhesion.
  • Employed single-cell force spectroscopy (SCFS) to quantify changes in adhesion forces.
  • Assessed the in vivo antimicrobial efficacy in three distinct animal models.

Main Results:

  • RGDS peptides effectively regulated bacterial-host interfacial adhesion forces.
  • RGDS demonstrated significant potential as an antibiotic adjuvant, reducing antibiotic dosage by 75%.
  • RGDS-enhanced low-dose antibiotic treatment showed validated in vivo antimicrobial efficacy.

Conclusions:

  • Mechanobiology-based host-directed strategies offer a novel approach to combatting drug-resistant bacteria.
  • RGDS peptides can be utilized to inhibit bacterial colonization and enhance antibiotic effectiveness.
  • This strategy holds broad potential for addressing the global threat of antibiotic resistance.