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  • 1
    ISSN: 1432-069X
    Keywords: Outer root sheath cells ; Hair papilla cells ; Dermal fibroblasts ; Co-culture ; Epithelium mesenchyme interactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Depending on environmental influences, follicular outer root sheath (ORS) cells in vivo can differentiate either towards interfollicular keratinocytes or, as demonstrated in the rat vibrissa, hair matrix cells. Crucial regulators of both their proliferation and differentiation are the mesenchymal cells of the respective tissues. The interactions of human ORS cells with human hair papilla cells (HPC) or human dermal fibroblasts (HDF) were studied using a two-chamber model separating the two cell types either by a microporous membrane or additionally by a medium layer. The results of 3H-thymidine incorporation studies indicated that ORS cell growth was markedly enhanced in co-culture with either HPC or HDF, the highest stimulatory effect resulting when ORS cells were in close association with the mesenchymal cells. No correlation was found between ORS cell proliferation and IL-6 production in the co-culture system, thus pointing to the secretion by HPC and HDF of growth-promoting soluble factors that are different form IL-6 as well as from EGF, bFGF and insulin present in the culture medium.
    Type of Medium: Electronic Resource
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