Summary
The morphology of human scalp hair follicle keratinocytes, cultured on the bovine eye lens capsule, is studied by light and electron microscopy.
The hair follicle keratinocytes in the stratified cultures are characterized by the presence of numerous tonofilaments, desmosomes and lysosomes and by the presence of glycogen accumulations. The cells in the upper layers develop a cornified envelope. Moreover, an incomplete basal lamina is found between the capsule and the basal cells. However, some features of epidermal keratinocytes in vivo, such as keratohyalin granules and stratum corneum formation, are absent. Analysis of the polypeptides by sodium dodecylsulfate polyacrylamide gel electrophoresis also reveals differences between the cultured hair follicle cells and epidermis, whilst the patterns of cultured cells and hair follicle sheaths are similar. The morphological and protein biosynthetic aspects of terminal differentiation of the keratinocytes in vitro are correlated. These results are discussed in the light of the findings with cultured epidermal keratinocytes, reported in the literature.
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Weterings, P.J.J.M., Verhagen, H., Wirtz, P. et al. Differentiation of human scalp hair follicle keratinocytes in culture. Virchows Archiv B Cell Pathol 45, 255–266 (1984). https://doi.org/10.1007/BF02889868
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DOI: https://doi.org/10.1007/BF02889868