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  • Title: Immortalization of human corneal endothelial cells using electroporation protocol optimized for human corneal endothelial and human retinal pigment epithelial cells.
    Author: Bednarz J, Teifel M, Friedl P, Engelmann K.
    Journal: Acta Ophthalmol Scand; 2000 Apr; 78(2):130-6. PubMed ID: 10794243.
    Abstract:
    PURPOSE: In this study we established a protocol for transfection of human corneal endothelial and human retinal pigment epithelial cells. This protocol was used for immortalization of human corneal endothelial cells. METHODS: Transfection was performed by means of electroporation. For immortalization a plasmid encoding large and small SV40 T-antigen was used. RESULTS: The established electroporation protocol was suitable for both cell types. This protocol was used for transfection of human corneal endothelial cells with a plasmid containing the early region of SV40. The transfected cultures exhibited an increased life-span before they entered crisis. One culture recovered from crisis and was cultivated for 300 population doublings. The cells exhibited an in vivo-like morphology usually lost during cell culture. CONCLUSIONS: We describe for the first time a culture of SV40 transfected human corneal endothelial cells which recovered from crisis and can therefore be regarded as immortalized.
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