Abstract
The aim of this study was to culture human urothelium and generate enough cells for subsequent reconstructive surgery. Using a modification of the Rheinwald-Green method for the routine culture of keratinocytes from patients with burns, we successfully cultured 91% of 57 biopsies from the renal pelvis, ureter, bladder and urethra of paediatric patients. The cells could be split one to three up to 9 times at 7–10 day intervals, giving a surface area of 1000 cm2 after a 2 month culture period. Primary cultures could not be initiated in defined medium MCDB153, although cells initiated using the Rheinwald-Green method could subsequently be propagated in this medium. Cytokeratin patterns in vitro were similar to those in vivo in the expression of keratins 7, 18 and 19 (characteristic of simple epithelia) and keratin 13 (characteristic of non-cornified stratified epithelia). Cultured urothelium also expressed keratin 14 (characteristic of cornified stratified epithelium) in about 25% of cells and keratin 16 (characteristic of fast-growing cells). These findings indicate that urothelial cells can be propagated in vitro for autologous grafting, and the next step is to identify substrates suitable for urothelial cell growth and differentiation and surgical manipulation.
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Petzoldt, J.L., Leigh, I.M., Duffy, P.G. et al. Culture and characterisation of human urothelium in vivo and in vitro. Urol Res 22, 67–74 (1994). https://doi.org/10.1007/BF00310994
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DOI: https://doi.org/10.1007/BF00310994