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Home / Publications / An original deal for new molecule: reversal of efflux pump activity, a rational strategy to combat gram-negative resistant bacteria.

An original deal for new molecule: reversal of efflux pump activity, a rational strategy to combat gram-negative resistant bacteria.

  • Authors: Amaral L, Fanning S, Pagès JM
  • Journal: Current Medicinal Chemistry
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/?term=n+original+deal+for+new+molecule%3A+reversal+of+efflux+pump+activity%2C+a+rational+strategy+to+combat+gram-negative+resistant+bacteria

The worldwide dissemination of «multi-drug resistant» (MDR) pathogens has severely reduced the efficacy of our antibiotic arsenal and increased the frequency of therapeutic failure. MDR bacteria over-express efflux pumps and this active mechanism can extrude all classes of antibiotics from the cell. It is necessary to clearly decipher the genetic, structural and functional aspects of this transport system in order to combat this polyselective mechanism. By understanding how efflux pumps work we may be able to develop a new group of antibacterial agents, collectively termed efflux reversals, including membrane permeabilisers, efflux pump inhibitors and flux-competitive agents, specific blockers, energy poisons, etc. Several chemical families of efflux pump inhibitors have been described and characterized. Among them several inhibitor compounds demonstrate efficient blocking of the efflux pump activity involved in the MDR phenotype as observed in many Gram-negative clinical isolates. This new family of molecules represents the first antibacterial class of compound specifically targeting active transport in the bacterial cell.

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About GHTM

GHTM is a R&D Unit that brings together researchers with a track record in Tropical Medicine and International & Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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