Extra Sugar on Vancomycin: New Analogues for Combating Multidrug-Resistant Staphylococcus aureus and Vancomycin-Resistant Enterococci

J Med Chem. 2018 Jan 11;61(1):286-304. doi: 10.1021/acs.jmedchem.7b01345. Epub 2018 Jan 2.

Abstract

Lipophilic substitution on vancomycin is an effective strategy for the development of novel vancomycin analogues against drug-resistant bacteria by enhancing bacterial cell wall interactions. However, hydrophobic structures usually lead to long elimination half-life and accumulative toxicity; therefore, hydrophilic fragments were also introduced to the lipo-vancomycin to regulate their pharmacokinetic/pharmacodynamic properties. Here, we synthesized a series of new vancomycin analogues carrying various sugar moieties on the seventh-amino acid phenyl ring and lipophilic substitutions on vancosamine with extensive structure-activity relationship analysis. The optimal analogues indicated 128-1024-fold higher activity against methicillin-susceptible S. aureus, vancomycin-intermediate resistant S. aureus (VISA), and vancomycin-resistant Enterococci (VRE) compared with that of vancomycin. In vivo pharmacokinetics studies demonstrated the effective regulation of extra sugar motifs, which shortened the half-life and addressed concerns of accumulative toxicity of lipo-vancomycin. This work presents an effective strategy for lipo-vancomycin derivative design by introducing extra sugars, which leads to better antibiotic-like properties of enhanced efficacy, optimal pharmacokinetics, and lower toxicity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / metabolism
  • Anti-Bacterial Agents / pharmacology
  • Anti-Bacterial Agents / toxicity
  • Cell Line
  • Drug Resistance, Multiple / drug effects*
  • Female
  • Humans
  • Hydrophobic and Hydrophilic Interactions
  • Male
  • Mice
  • Microbial Sensitivity Tests
  • Peptidoglycan / metabolism
  • Staphylococcus aureus / drug effects*
  • Structure-Activity Relationship
  • Sugars / chemistry*
  • Vancomycin / chemistry*
  • Vancomycin / metabolism
  • Vancomycin / pharmacology*
  • Vancomycin / toxicity
  • Vancomycin-Resistant Enterococci / drug effects*

Substances

  • Anti-Bacterial Agents
  • Peptidoglycan
  • Sugars
  • Vancomycin