Oral mucosal cell membrane

The host cell membranes in the oral mucosa represent the complex lipid bilayer and associated protein structures of the stratified squamous epithelium lining the oral cavity (StatPearls: Anatomy, Head and Neck, Oral Mucosa, 2023). These membranes serve as a primary biological barrier, regulating the passage of ions, nutrients, and drugs while protecting against pathogens and environmental toxins (NCBI: Oral Mucosal Drug Delivery, 2011). While not a single molecular target, they are the site of action for various pharmacological agents, such as local anesthetics (e.g., Lidocaine) that inhibit voltage-gated sodium channels within the membrane to provide analgesia (PubChem: Lidocaine). Additionally, these membranes contain specific receptors like ACE2 and TMPRSS2, which are exploited by viruses such as SARS-CoV-2 for cellular entry (PubMed: PMID 33767405). Therapeutic interventions often target the physical properties of these membranes to improve mucoadhesion or to enhance the permeability of drugs intended for systemic circulation via the buccal or sublingual routes. Disruption of these membranes by antiseptics like chlorhexidine leads to increased permeability and antimicrobial effects but can also cause local tissue irritation (PubChem: Chlorhexidine).

Other names

Oral epithelial cell membraneBuccal mucosa membraneHost cell membrane of the oral cavity

Pharmacological interaction with the oral mucosal cell membrane involves the non-specific disruption of lipid bilayer fluidity by cationic antiseptics, the stabilization of membranes through the inhibition of voltage-gated sodium channels by local anesthetics, and the formation of non-covalent bonds with membrane glycoproteins to achieve mucoadhesion (StatPearls: Local Anesthetics, 2023; PubMed: PMID 21521015).