Skin Telocyte Secretome as Conditioned Medium Prevents Profibrotic Differentiation of Skin Fibroblasts into Myofibroblasts.

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Tác giả: Elena Andreucci, Alessio Biagioni, Bianca Saveria Fioretto, Mirko Manetti, Eloisa Romano, Irene Rosa

Ngôn ngữ: eng

Ký hiệu phân loại: 636.0885 Animal husbandry

Thông tin xuất bản: Switzerland : International journal of molecular sciences , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 70595

Telocytes (TCs) are distinctive cells widely localized in the stromal compartment of several human organs, including the skin. By means of their peculiar prolongations named telopodes, skin TCs are organized in networks interconnected with a variety of adjacent cells, being thus supposed to take part in skin homeostasis through both cell-to-cell contacts and the release of extracellular vesicles. A disarrangement/loss of the TC network was shown in human fibrotic skin as well as in the murine model of bleomycin-induced cutaneous fibrosis, but whether such TC alterations may represent just a consequence or a trigger of the fibrotic process still remains to be clarified. Thus, we investigated the effects of skin TC secretome as conditioned medium (TC-CM) on the transition of skin fibroblasts into myofibroblasts promoted by the master profibrotic cytokine transforming growth factor β1 (TGFβ1). Primary cultures of both adult human skin TCs and fibroblasts were obtained by means of immunomagnetic cell separation. Nanoparticle tracking analysis was carried out to measure extracellular vesicles in TC-CM. The combination of multiple morphological, gene/protein expression, and functional assessments demonstrated that TC-CM was able to significantly prevent TGFβ1-induced fibroblast-to-myofibroblast transition. TC-CM did not influence cell viability, while it effectively inhibited TGFβ1-induced fibroblast proliferation, migration, and morphological changes. Indeed, TC-CM was able to reduce TGFβ1-mediated skin fibroblast phenotypic and functional differentiation into myofibroblasts, as shown by a significant decrease in
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