Bacterial cell membrane and oral biofilm extracellular polymeric substance matrix

The bacterial cell membrane and oral biofilm matrix are fundamental structural components that protect and organize microbial communities in the oral cavity. The cell membrane serves as a vital semi-permeable barrier, maintaining cellular homeostasis and facilitating energy transduction through the proton motive force (Sohlenkamp & Geiger, 2016). In contrast, the oral biofilm matrix is a complex assembly of extracellular polymeric substances (EPS), including polysaccharides, proteins, and extracellular DNA, which provides mechanical stability and chemical protection to the embedded bacteria (Flemming & Wingender, 2010). These structures are primary targets for antimicrobial agents like chlorhexidine and cetylpyridinium chloride, which disrupt membrane integrity and cause the leakage of intracellular contents (Jones, 1997). Other therapeutic strategies focus on the enzymatic degradation of the EPS matrix or the inhibition of glucosyltransferases to prevent the formation of the protective biofilm scaffold (Bowen et al., 2018). Targeting these components is crucial for treating dental caries and periodontal diseases, as it destabilizes the pathogenic environment of dental plaque. However, the lack of specificity in targeting these broad structural elements can lead to the disruption of the healthy oral microbiome and potential side effects like mucosal irritation (Marsh, 2010).

Other names

Dental plaque matrixOral biofilm EPSBacterial cytoplasmic membraneExtracellular polymeric substances

Disruption of lipid bilayer integrity, inhibition of glucosyltransferase enzymes responsible for EPS synthesis, and physical degradation of the extracellular matrix to enhance drug penetration.