Growth of human keratinocytes on fibronectin -coated plates

Cell Biology International Reports
B A GilchrestT Maciag

Abstract

Keratinocytes derived from the skin of newborns and of adults aged 19 to 57 years were grown on plates coated with human fibronectin (HFN) in the absence of a 3T3 monolayer. The cells grew well, attained confluence and could be sub-cultivated at densities approximately 10% of those necessary for successful cultivation of human keratinocytes on collagen coated dishes. Growth was excellent at concentrations of fetal bovine serum (FBS) as low as 5%, and appreciable growth occurred over a six day period even in the complete absence of serum. Growth was enhanced by addition of cholera toxin to the medium. Fibroblast overgrowth of the keratinocyte colonies was not observed. The observation that keratinocytes grow well on fibronectin in the absence of a fibroblast feeder-layer should simplify further study of this fastidious cell type and increases our understanding of keratinocyte growth requirements in vitro.

Citations

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