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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA

Published on: February 9, 2011

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Evaluation of Platensimycin and Platensimycin-Inspired Thioether Analogues against Methicillin-Resistant

Meng Su1, Lin Qiu1, Youchao Deng1

  • 1Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China.

Molecular Pharmaceutics
|June 28, 2019
PubMed

Insights

Platensimycin (PTM) and its derivative PTM-2t effectively inhibit Staphylococcus aureus biofilms and treat wound infections in mice. Prodrug strategies may enhance PTM

Area of Science:

  • Microbiology
  • Natural Products Chemistry
  • Pharmacology

Background:

  • Staphylococcus aureus is a major cause of hospital and community infections.
  • Methicillin-resistant S. aureus (MRSA) biofilms are challenging to treat with antibiotics.
  • Platensimycin (PTM) targets bacterial fatty acid synthases and shows antibiotic potential.

Purpose of the Study:

  • To evaluate the efficacy of platensimycin (PTM) and its derivative PTM-2t against Staphylococcus aureus biofilms and infections.
  • To explore the potential of PTM and its analogues as topical treatments for MRSA infections.
  • To investigate the use of prodrug strategies to improve PTM's pharmacokinetic properties.

Main Methods:

  • In vitro assessment of biofilm inhibition by PTM and PTM-2t against S. aureus ATCC 29213.
  • In vivo topical treatment of MRSA burn wound infections in a mouse model using PTM and PTM-2t ointments.
  • Evaluation of PTM-2t's efficacy in a mouse peritonitis model to assess prodrug potential.

Main Results:

  • PTM and PTM-2t reduced S. aureus biofilm formation by over 95% in vitro at 2 μg/mL.
  • Topical ointments containing PTM or PTM-2t successfully treated MRSA infections in a mouse burn wound model.
  • PTM-2t demonstrated improved in vivo efficacy compared to PTM in a mouse peritonitis model.

Conclusions:

  • PTM and its analogue PTM-2t show significant potential for topical or local treatment of bacterial infections, particularly MRSA.
  • Prodrug strategies, exemplified by PTM-2t, are promising for overcoming the pharmacokinetic limitations of PTM.
  • Further development of PTM-based compounds could lead to novel therapies against resistant bacterial infections.
Keywords:
Staphylococcus aureusantibioticperitonitisplatensimycinprodrugskin infection

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