毛の再生技術と創薬研究へのアプローチ(誌上シンポジウム)

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Hair follicles are the organs that produce hair shafts. They periodically regenerate throughout the life of the organisms, which is called the hair cycle. To develop new drugs to treat hair disorders and diseases, reproducible and high throughput assays or screening methods have been required to estimate the efficacy of various factors on hair follicle function. Although organ culture of hair follicles is one of the useful ways to carry out such research, it is not suitable for manipulating the genes or cells present in hair follicles. Patch assay is a method used to reconstruct hair follicles from enzymatically dissociated skin cells and has many advantages compared to the conventional Chamber method. Using the Patch method, transferring genes into follicular cells becomes easier than ever before. Chimeric follicles could be produced with dissociated cells by modifying the combination of cells or by simply merging cells of different origins. These applications certainly help the progress of hair research. However, we recently found that some functions of dermal papillae and follicular epithelia change during the growing phase (anagen) of the hair cycle. Dermal papillae produce different factors in early anagen and mid anagen. The signals from dermal papillae in early anagen could produce hair bulbs with clonogenic epithelial precursors but not with dormant epithelial precursors. On the other hand, the signals from dermal papillae in mid anagen strongly promote hair formation with dormant epithelial precursors. Therefore, more attention should be given to the hair cycle stages when using organ culture of hair follicles and conducting reconstruction experiments with follicularly derived cells.
公益社団法人日本薬学会の論文
2008-01-01

毛の再生技術と創薬研究へのアプローチ(誌上シンポジウム)

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