Pseudomonas aeruginosa biofilm formation and motility

Pseudomonas aeruginosa biofilm formation and motility represent critical virulence mechanisms that enable this opportunistic pathogen to establish chronic, antibiotic-resistant infections. Biofilms are structured communities of bacteria encased in a self-produced matrix of extracellular polymeric substances (EPS), which protects the microbes from host immune responses and antimicrobial agents (Source: Nature Reviews Microbiology, 2015). Motility, including swimming, swarming, and twitching, is essential for the initial stages of surface colonization and the subsequent dispersal of bacteria from mature biofilms (Source: Microbiology and Molecular Biology Reviews, 2011). These processes are tightly regulated by complex signaling networks, most notably quorum sensing (QS) systems and the secondary messenger cyclic-di-GMP (Source: Frontiers in Microbiology, 2019). Therapeutic strategies targeting these pathways aim to disarm the bacteria rather than kill them directly, potentially reducing the selective pressure for antibiotic resistance. Current research focuses on small molecule inhibitors of QS receptors like LasR and PqsR, as well as agents that degrade the biofilm matrix or modulate c-di-GMP levels to promote a transition from a sessile to a more vulnerable planktonic state (Source: Journal of Medicinal Chemistry, 2020).

Other names

Biofilm developmentBacterial motilityP. aeruginosa virulence factorsQuorum sensing-regulated phenotypes

Quorum sensing inhibition, c-di-GMP modulation, Extracellular polymeric substance (EPS) degradation, Iron metabolism interference, Type IV pili inhibition