Cyclosporin A Promotes Hair Epithelial Cell Proliferation and Modulates Protein Kinase C Expression and Translocation in Hair Epithelial Cells

    September 2001 in “ Journal of Investigative Dermatology
    Tomoya Takahashi, Ayako Kamimura
    TLDR Cyclosporin A promotes hair cell growth and affects protein kinase C levels.
    The study investigated the effects of Cyclosporin A on murine hair epithelial cells and epidermal keratinocytes, finding that it promoted cell growth by 150%-160% and 140% respectively at certain concentrations, but inhibited growth at doses above 3 µg/ml. Cyclosporin A also reduced the expression and translocation of specific protein kinase C (PKC) isozymes, which negatively affect hair growth, suggesting its hair-growing activity might be due to this modulation. The study used primary cultures from 50 neonatal mice, confirming results in multiple experiments, and highlighted the need for further research into PKC isozyme expression in hair cell proliferation.
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