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Updated: Jan 30, 2026

Corneal Tissue Engineering: An In Vitro Model of the Stromal-nerve Interactions of the Human Cornea
Published on: January 24, 2018
QobuR - A new in vitro human corneal epithelial model for preclinical drug screening
Manuel Chacón1, Natalia Vázquez1, Silvia Berisa2
1Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Oviedo, Spain.
Abstract:
A new in vitro human corneal epithelial model (QobuR) obtained from normal limbal tissue has been developed to study ocular irritancy of different ophthalmic compounded drugs. Phenotypical characterization and trans-epithelial electrical resistance (TEER) of QobuR revealed essential similarities compared with a native human cornea, displaying functional markers and TEER values near 1500 Ωcm2 at day 7th of cellular differentiation. Using this model, ocular irritancy and barrier integrity alterations were evaluated using MTT reaction and variations in TEER. We found that some of the Non-Irritant products evaluated still damage the corneal epithelial integrity and current protocols for ocular irritancy should therefore include a barrier integrity evaluation. Moreover, in order to comprehensively evaluate corneal permeability of the active ingredients, we propose the use of QobuR as an all-in-one alternative method for evaluating ocular irritancy, barrier disruptions and permeability rates of topically applied ocular drugs to improve current in vitro drug testing procedures.
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