Abstract
Embryonic stem (ES) cells can be differentiated into many cell types in vitro, thus providing a potential unlimited supply of cells for cognitive in vitro studies and cell-based therapy. We recently reported the efficient derivation of ectodermal and epidermal cells from murine ES cells. These differentiated ES cells were able to form, in culture, a multilayered epidermis coupled with an underlying dermal compartment, similar to native skin. We clarified the function of BMP-4 in the binary neuroectodermal choice by stimulating sox-1 + neural precursors to undergo specific apoptosis while inducing epidermal differentiation through ΔNp63 gene activation. We further demonstrated that ΔNp63 enhances ES-derived ectodermal cell proliferation and is necessary for epidermal commitment. This unique cellular model further provides a powerful tool for identifying the molecular mechanisms controlling normal skin development and for investigating p63-ectodermal dysplasia human congenital pathologies. To cite this article: D. Aberdam et al., C. R. Biologies 330 (2007).
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