Retinal pigment epithelial cells can be cultured on fluocinolone acetonide treated nanofibrous scaffold

Engineered tissue currently lacks requisite capacity to sustain cell viability and functionality. Here we demonstrate that human RPE cell lines (ARPE-19) can be cultured on ultrathin suspended electrospun nanofibre scaffolds (ENS) composed of hydrophobic polymer polyacrylonitrile (PAN) and a water-soluble aliphatic diamine, without (untreated) or with (treated) fluocinolone acetonide (FA). Cells survived and retained their characteristic morphology for up to 150 days with FA-treated ENS and manifested a morphological epithelial phenotype with expression of biomarkers critical for maintaining retinal physiological characteristics. This novel technique for producing culture substrates provides suitable hydrophilicity and a protective environment for prolonged RPE culture and has immense potential for subretinal transplantation. The findings indicate that FA-treated ENS is an excellent matrix for retaining the differentiated and epithelial phenotype