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.
- anti-bacterial agents
- cell membrane
- Diterpenes, Abietane
- dose-response relationship, drug
- microbial sensitivity tests
- Staphylococcus aureus
- structure-activity relationship