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Delivery of Antibiotics by Cell-Penetrating Peptides to Kill Intracellular Pathogens

Christian Rüter1

  • 1Center for Molecular Biology of Inflammation (ZMBE), Institute of Infectiology, University of Muenster, Münster, Germany. rueterc@uni-muenster.de.

Methods in Molecular Biology (Clifton, N.J.)
|November 12, 2021
PubMed

Insights

Multidrug-resistant bacteria pose a significant threat. Cell-penetrating peptides (CPP) offer a novel strategy to deliver antimicrobial agents into host cells, effectively targeting intracellular pathogens and combating infections.

Area of Science:

  • Microbiology
  • Pharmacology
  • Biotechnology

Background:

  • Rising rates of multidrug-resistant bacteria necessitate novel therapeutic strategies.
  • Intracellular and facultative intracellular bacteria are challenging to treat with conventional antibiotics due to poor intracellular penetration.
  • Cell-penetrating peptides (CPP) show potential for delivering antimicrobial agents into host cells.

Purpose of the Study:

  • To describe the conjugation of CPPs with antimicrobial agents for targeted delivery into infected cells.
  • To outline antimicrobial activity assays for evaluating CPP-mediated drug delivery.
  • To demonstrate the application of CPPs in treating intracellular bacterial infections.

Main Methods:

  • Conjugation of cell-penetrating peptides (CPP) with antimicrobial compounds.
  • In vitro antimicrobial activity assays.
  • Evaluation of CPP-mediated delivery for intracellular pathogen killing.

Main Results:

  • Successful conjugation of CPPs with antimicrobial agents.
  • Demonstration of enhanced antimicrobial efficacy against intracellular bacteria via CPP-mediated delivery.
  • Validation of antimicrobial activity assays for assessing treatment effectiveness.

Conclusions:

  • CPP-mediated delivery is a promising approach to overcome antibiotic resistance and target intracellular bacterial infections.
  • This strategy enhances the efficacy of antimicrobial agents by enabling their entry into host cells.
  • Further research into CPP-drug conjugates holds potential for developing new treatments against resistant pathogens.
Keywords:
Antimicrobial activityAntimicrobial drug deliveryCPP-translocated antimicrobialsCell-penetrating peptidesGentamicinIntracellular pathogenic bacteria

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