Sep 16, 2014

A potent antibiofilm agent inhibits and eradicates mono- and multi-species biofilms

bioRxiv
Karo MichaelianPei-Yuan Qian

Abstract

Biofilms are surface-attached multicellular communities that create many problems in human health and various industries. Given the prominence of biofilms in biofouling and infectious diseases, antibiofilm control approaches are highly sought after. In the present study, we identified elasnin as a potent antibiofilm agent through a bioassay-guided approach. Elasnin specifically inhibited the biofilm formation of bacterial mono-species and eradicated the mature biofilm of Gram-positive bacteria at concentrations below 2.5 μg/mL with a low toxic effect on cells and a low resistance risk. Confocal observations illustrated that elasnin decreased cell aggregations and destroyed the biofilm matrix. Furthermore, elasnin-based antibiofilm coatings were prepared and inhibited the formation of multi-species biofilms and the attachment of large biofouling organisms in the field test. These findings suggest that elasnin is a promising antibiofilm agent for future applications in biofilm control.

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