Bacterial cell membrane and biofilm formation (null)

**Bacterial cell membranes** are phospholipid bilayers that separate the interior of the bacterial cell from the environment. They serve as a barrier for molecular transport, host proteins essential for survival, and play key roles in cell signaling and adhesion[7]. **Biofilm formation** is a multi-step, dynamic process whereby bacteria transition from planktonic (free-living) forms to organized surface-associated communities embedded in a self-produced matrix of extracellular polymeric substances (EPS). The process typically involves initial reversible attachment, irreversible adhesion via specific molecules, EPS production, maturation into complex 3D communities, and eventual dispersal[1][3][5][8]. Biofilms confer protection against environmental stresses, immune defenses, and especially antibiotics, greatly complicating treatment of chronic infections and device-associated microbial disease. Key molecular events include surface sensing, increases in intracellular signaling molecules (such as c-di-GMP), activation of surface adhesins, production of matrix polysaccharides, and community-wide communication via quorum sensing[5][9]. Therapeutic targeting often focuses on molecules and pathways critical for biofilm development (such as adhesins, enzymes involved in EPS synthesis, and QS pathways), as well as general membrane-disrupting agents, since both membrane integrity and biofilm matrix are required for persistent infection and antibiotic resistance[4][7][9]. This entry should be split into separate targets for structured annotation, such as "Bacterial cell membrane" and specific biofilm formation mediators (e.g., key enzymes or adhesins), since "biofilm formation" itself is a complex, multicomponent process, not a single target.

Other names

Bacterial plasma membraneBacterial membraneBiofilmMicrobial biofilm

Membrane disruption, leading to bacterial lysis (by antibiotics, peptides). - Inhibition of extracellular polymer production (agents targeting EPS synthesis). - Quorum sensing blockade, preventing coordinated biofilm formation. - Enzymatic degradation of biofilm matrix (DNase, proteases, dispersin B). - Physical removal or detachment of biofilms (mechanical, chemicals)