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Endogenous Enzymes Enable Antimicrobial Activity.

Kenton J Hetrick1,2, Miguel A Aguilar Ramos1, Ronald T Raines1,2

  • 1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.

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Summary
This summary is machine-generated.

Researchers developed a novel prodrug strategy to combat antimicrobial resistance. By leveraging bacterial esterases, this approach enhances the activity of existing antibiotics against specific bacterial strains, offering a promising new avenue for drug development.

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Area of Science:

  • Microbiology and Infectious Diseases
  • Drug Discovery and Development
  • Biochemistry and Enzymology

Background:

  • Antimicrobial resistance poses a significant global health threat, necessitating the development of novel antimicrobial compounds.
  • Prodrug strategies, which involve inactive compounds converted to active drugs, remain an underutilized approach in antimicrobial research.

Purpose of the Study:

  • To investigate the potential of a prodrug strategy to enhance antimicrobial activity against bacteria possessing specific enzymatic activation capabilities.
  • To identify and characterize esterases responsible for prodrug activation in bacteria.

Main Methods:

  • A library screen identified a sulfurol ester derivative of trans-3-(4-chlorobenzoyl)acrylic acid as a promising prodrug candidate.
  • The sensitivity of Mycolycibacterium smegmatis to the prodrug was assessed, linked to its endogenous esterase activity.
  • Candidate esterases were identified, heterologously produced in Escherichia coli, and their role in conferring prodrug sensitivity was confirmed.

Main Results:

  • The sulfurol ester prodrug demonstrated enhanced antimicrobial activity against Mycolycibacterium smegmatis due to its endogenous esterase.
  • Heterologous expression of identified esterases rendered Escherichia coli sensitive to the prodrug, validating the enzymatic activation mechanism.
  • These findings highlight the potential for targeted antimicrobial delivery via enzyme-activated prodrugs.

Conclusions:

  • This study presents a novel prodrug approach that exploits bacterial enzymatic activity to enhance antimicrobial efficacy.
  • The findings suggest a new paradigm for developing targeted antimicrobial agents by leveraging specific endogenous enzymatic pathways.
  • This strategy offers a promising avenue for combating antimicrobial resistance by creating bacteria-specific drug activation.