Human corneal epithelial cell surface

The human corneal epithelial cell surface is the apical-most biological interface of the eye, serving as the primary physical and chemical barrier against environmental pathogens and mechanical trauma. It is characterized by a specialized glycocalyx composed of membrane-associated mucins, such as MUC1 and MUC16, which are essential for maintaining tear film stability and providing a smooth refractive surface for vision [Gipson, 2004]. This surface is not a single molecular target but a complex cellular structure containing various receptors (e.g., EGFR, TrkA), ion channels, and adhesion molecules (e.g., ICAM-1) that are individually targeted by ophthalmic drugs. In conditions like dry eye disease or neurotrophic keratitis, the integrity of this surface is compromised, leading to inflammation and visual impairment [Pflugfelder & Stern, 2020]. Therapeutic strategies focus on protecting this interface through lubrication, suppressing surface inflammation, or stimulating regenerative pathways to restore epithelial health [Jones et al., 2017].

Other names

Corneal epithelial glycocalyxApical surface of the corneal epitheliumOcular surface epithelium

Pharmacological agents interact with the corneal surface by providing physical lubrication to the glycocalyx, inhibiting inflammatory mediators (e.g., ICAM-1/LFA-1 interaction), or activating growth factor receptors (e.g., TrkA) to promote epithelial cell survival and migration [Pflugfelder & Stern, 2020; Jones et al., 2017].