Biofilm destabilizing agent

A biofilm destabilizing agent is a therapeutic substance designed to weaken or dismantle the extracellular polymeric substance (EPS) matrix that protects bacterial communities in a biofilm [1, 3, 4]. Biofilms are highly structured environments that provide bacteria with a significant survival advantage, often rendering them up to 1,000 times more resistant to antibiotics than their planktonic counterparts [5, 6]. These agents target the structural 'glue' of the biofilm, which is composed of extracellular DNA (eDNA), polysaccharides, and proteins, or they interfere with signaling mechanisms such as quorum sensing that coordinate biofilm maintenance [2, 3, 9]. By disrupting this protective barrier, biofilm destabilizing agents restore the effectiveness of conventional antibiotics and the host immune system, facilitating the clearance of chronic and persistent infections [3, 7, 8]. Clinical applications include the use of dornase alfa (recombinant human DNase I) in cystic fibrosis to target eDNA, while ongoing research explores novel enzymes like alginate lyase and small-molecule inhibitors [7, 9].

Other names

Anti-biofilm agentBiofilm disruptorBiofilm dispersing agentBiofilm inhibitorEPS-degrading agent

Biofilm destabilizing agents function by enzymatically degrading the structural components of the extracellular polymeric substance (EPS) matrix, such as extracellular DNA (eDNA), exopolysaccharides (e.g., alginate), and proteins, or by disrupting the signaling pathways (e.g., quorum sensing, c-di-GMP) that regulate biofilm maintenance and physical integrity [1, 3, 4, 9].