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Experimental dermatology

Hair-inducing ability of human dermal papilla cells cultured under Wnt/β-catenin signalling activation.


PMID 22417309

Abstract

It is well known that dermal papilla cells (DPCs) play crucial roles in hair follicle induction. In this study, we examined whether Wnt/β-catenin activation results in maintenance of the hair-inducing ability of human DPCs. Expression of DPC marker genes was maintained under Wnt/β-catenin signalling stimulation by GSK-3β inhibition. Furthermore, human DPCs showed constant hair induction when transplanted with murine epidermal cell fraction. Alu-positive human DPCs were essentially detected adjacent to the reconstructing epidermal structure positive for P-cadherin immunoreactivity. The transplanted human DPCs were abundant in the surrounding dermal sheath portion of the fully regenerated hair follicles. These results support the importance of Wnt/β-catenin signalling in hair follicle induction. This study may provide valuable information to establish a culture method of human DPCs for cell-based therapy.

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