New derivatives of dehydroabietic acid target planktonic and biofilm bacteria in Staphylococcus aureus and effectively disrupt bacterial membrane integrity
摘要:
The combination of the dehydroabietic acid scaffold with different amino acids resulted in the discovery of a new class of hybrid compounds that targets both planktonic and biofilms bacteria in Staphylococcus aureus strains and are far more potent anti-biofilm agents than conventional antibiotics. Unlike dehydroabietic acid, these compounds can disrupt biofilms within a short time period and compromise the integrity of the bacterial membrane. Two of the compounds identified in our study are the most potent abietane-type anti-biofilm agents reported so far and display robust activity against pre-formed biofilms at concentrations only 3-6-fold higher than those required to inhibit biofilm formation. Their easy preparation based on proteolysis-resistant D- and unusual amino acids makes them useful chemical probes to gain a deeper understanding of bacterial biofilms and outstanding candidates for further development into new drugs to fight infections. (C) 2015 Elsevier Masson SAS. All rights reserved.
The present invention relates to the field of wood rosin and resin acid derivatives and more particularly to abietane-type diterpenoids as well as different uses thereof. Furthermore, the present invention relates to methods of coating surfaces, preventing, reducing or inhibiting bacterial biofilm formation, and treating or preventing disorders caused by microbial growth and viability as well as bacterial colonization.