Comparative morphological and growth kinetics studies of human hair bulb papilla cells and root sheath fibroblasts in vitro.
Dermal papillae isolated from anagen hair bulbs obtained from biopsy specimens from five subjects with normal hair pattern, and fibroblasts derived from the mesenchymal root sheaths (RSF) of the same hair follicles were separately grown in culture and the cell-cycle distribution pattern on different days was analyzed by applying DNA flow cytometry (FCM). Papilla cells (PC) exhibited distinctive morphological features by forming cell aggregates differing from RSF with respect to cell shape and growth pattern. They also proliferated remarkably more slowly than RSF. DNA-FCM analysis showed that both PC and RSF demonstrated synchronous fluctuations in the percentage of cells in G1/0, S and G2 + M phases during the period of subculture.
D000328:Adult; D002455:Cell Division; D004247:DNA / Q000378:metabolism; D004847:Epithelial Cells; D005260:Female; D005347:Fibroblasts / Q000166:cytology; D005434:Flow Cytometry; D006197:Hair / Q000166:cytology*; D006801:Humans; D008297:Male; D008875:Middle Aged
D004247:DNA