Ocular surface receptors

Ocular surface receptors represent a heterogeneous collection of signaling proteins located on the cornea, conjunctiva, and associated glandular tissues (PMID: 16123415). These receptors, including G protein-coupled receptors (GPCRs), ion channels, and receptor tyrosine kinases, play vital roles in maintaining the ocular surface microenvironment and tear film stability (PMID: 15110635). They are involved in diverse biological processes such as innate immune defense via Toll-like receptors, wound healing through growth factor signaling (PMID: 11775431), and the regulation of tear secretion. In pathological states like dry eye disease, allergic conjunctivitis, and corneal ulcers, these receptors serve as critical points for therapeutic intervention. For instance, integrin receptors like LFA-1 are targeted by lifitegrast to reduce inflammation (FDA Label, Xiidra), while neurotrophic receptors like TrkA are activated by cenegermin to promote epithelial repair (PMID: 29473773). Additionally, nicotinic acetylcholine receptors are targeted by varenicline to stimulate natural tear production (PMID: 34415306). Because this term refers to a broad class of proteins rather than a single molecular entity, it is typically used to describe the collective pharmacological landscape of the eye's exterior.

Other names

Ocular surface receptors broadlyCorneal receptorsConjunctival receptorsOcular surface signaling proteins

Agonism of muscarinic and nicotinic receptors to stimulate tear production; antagonism of adrenergic and prostaglandin receptors to manage intraocular pressure; inhibition of integrin-mediated T-cell adhesion; and activation of neurotrophic tyrosine kinase receptors for corneal repair.