Bacterial biofilm matrix and extracellular proteases

The bacterial biofilm matrix, primarily composed of the extracellular polymeric substance (EPS), serves as a protective scaffold for microbial communities in chronic wounds (Flemming & Wingender, 2010, Nature Reviews Microbiology). This matrix consists of polysaccharides, extracellular DNA (eDNA), and proteins that shield bacteria from host immune responses and antibiotic penetration (Percival et al., 2015, Wound Repair and Regeneration). Concurrently, bacteria within the biofilm secrete extracellular proteases, such as elastases and collagenases, which degrade host tissue and essential growth factors, thereby stalling the wound healing process (Gibson et al., 2009, Journal of Wound Care). Therapeutic targeting of this environment involves the use of agents like collagenase clostridium histolyticum or cadexomer iodine to physically disrupt the EPS and neutralize bacterial enzymes (Schultz et al., 2017, Wound Repair and Regeneration). By degrading these structural and functional components, treatments aim to reduce the microbial burden and transition the wound from a chronic inflammatory state to an active healing phase.

Other names

Extracellular polymeric substanceEPSBiofilm matrixMicrobial extracellular proteasesWound biofilm environment

Enzymatic degradation of the extracellular polymeric substance (EPS) and inhibition of bacterial-derived proteolytic enzymes to disrupt biofilm integrity and promote wound healing.