Subpopulations of Dermal Skin Fibroblasts Secrete Distinct Extracellular Matrix: Implications for Using Skin Substitutes in the Clinic

    December 2017 in “ British Journal of Dermatology ”
    Martina Ghetti, Helena Topouzi, Georgios Theocharidis, Valentina Papa, Greg Williams, Elena Bondioli, Giovanna Cenacchi, John T. Connelly, Claire A. Higgins
    Studysummary This study found that ECMs from papillary and dermal papilla fibroblasts support normal basement membrane formation, suggesting potential improvements for therapeutic biomaterials in skin engineering. Our plain-language summary of this paper — not a Tressless recommendation.
    The study examined the extracellular matrices (ECMs) produced by three subpopulations of dermal fibroblasts: papillary fibroblasts (Pfi), dermal papilla fibroblasts (DPfi), and reticular fibroblasts (Rfi). It found that these subpopulations secreted ECMs with distinct morphologies and compositions, which could influence the effectiveness of skin substitutes in clinical applications. Pfi-derived matrices had thicker fibers and more interfibrillar space, while DPfi matrices were rich in thrombospondin. These differences suggested that fibroblast subpopulations contribute uniquely to ECM architecture, potentially inspiring the design of better therapeutic biomaterials for skin engineering and improving outcomes in skin repair and regeneration therapies.
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