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Development of human corneal epithelium on organized fibrillated transparent collagen matrices synthesized at high concentration

Abstract : Several diseases can lead to opacification of cornea requiring transplantation of donor tissue to restore vision. In this context, transparent collagen I fibrillated matrices have been synthesized at 15, 30, 60 and 90 mg/mL. The matrices were evaluated for fibril organizations, transparency, mechanical properties and ability to support corneal epithelial cell culture. The best results were obtained with 90 mg/mL scaffolds. At this concentration, the fibril organization presented some similarities to that found in corneal stroma. Matrices had a mean Young's modulus of 570 kPa and acellular scaffolds had a transparency of 87% in the 380-780 nm wavelength range. Human corneal epithelial cells successfully colonized the surface of the scaffolds and generated an epithelium with characteristics of corneal epithelial cells (i.e. expression of cytokeratin 3 and presence of desmosomes) and maintenance of stemness during culture (i.e. expression of Delta Np63 alpha and formation of holoclones in colony formation assay). Presence of cultured epithelium on the matrices was associated with increased transparency (89%). (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Submitted on : Monday, February 15, 2016 - 4:58:33 PM
Last modification on : Thursday, December 19, 2019 - 2:12:50 AM

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Aurelien Tidu, Djida Ghoubay-Benallaoua, Barbara Lynch, Bernard Haye, Corinne Illoul, et al.. Development of human corneal epithelium on organized fibrillated transparent collagen matrices synthesized at high concentration. Acta Biomaterialia, Elsevier, 2015, 22, pp.50-58. ⟨10.1016/j.actbio.2015.04.018⟩. ⟨hal-01274330⟩

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