Airway epithelial cell surface

The **airway epithelial cell surface** refers to the plasma membrane and associated molecular complexes that form the exterior barrier of epithelial cells lining the respiratory tract. This surface is not a single molecule but a highly organized platform composed of multiple proteins—including tight junctions (e.g., claudins, occludin, ZO proteins), cell adhesion molecules, and mucins—that collectively mediate barrier integrity, mucociliary transport, and immune responses to inhaled pathogens and pollutants. Many critical disease processes in conditions such as asthma, chronic obstructive pulmonary disease (COPD), and respiratory infections involve dysfunction or injury of the airway epithelial cell surface. However, it should be noted that the term as given does not correspond to a specific druggable target (such as a defined receptor, transporter, or enzyme), but instead to the broader structural and functional interface of the cell. As such, it is unsuitable as a unique canonical target for therapeutic development, though individual proteins on the airway epithelial surface may be valid and distinct molecular targets.

Other names

Airway epithelial membraneAirway epithelial cell membraneRespiratory epithelial cell surface