Other corneal stromal extracellular matrix proteins

The corneal stromal extracellular matrix (ECM) is a highly specialized and organized framework that accounts for approximately 90% of the total corneal thickness, providing the eye with both structural integrity and the precise optical properties required for transparency (Meek & Knupp, 2015). This matrix is primarily composed of a lattice of collagen fibrils (predominantly Types I, V, and VI) interspersed with small leucine-rich proteoglycans (SLRPs) such as lumican, keratocan, and decorin, which are critical for regulating fibril diameter and interfibrillar spacing (Hassell & Birk, 2010). Mutations or dysregulation of these proteins can lead to severe visual impairment through conditions like keratoconus, where the matrix thins and bulges, or corneal dystrophies and scarring, where the loss of organization results in opacity (Funderburgh, 2000). Therapeutic interventions often target the ECM by strengthening it through collagen cross-linking using riboflavin and UV-A light or by using drugs like losartan to inhibit the fibrotic response following injury (Wilson, 2020). As a target designation, 'Other corneal stromal extracellular matrix proteins' is considered a non-specific collective category rather than a single molecular entity, typically used in pharmacological databases to group various structural components of the corneal stroma.

Other names

Corneal stromal ECMStromal matrix proteinsCorneal proteoglycansCorneal glycoproteins

Photo-oxidative collagen cross-linking to increase mechanical stiffness; inhibition of TGF-beta-mediated myofibroblast transformation to reduce fibrotic ECM deposition; modulation of matrix metalloproteinase activity to prevent ECM degradation.