Abstract
BackgroundThis study aimed to evaluate soy isoflavones' effect and potential use—specifically genistein—in treating human keloid fibroblast cells (KFs) and in a keloid tissue culture model.MethodsTo investigate the effects of genistein on keloid, a wound-healing assay was performed to detect cell migration. Flow cytometry was used to measure apoptosis. Western blotting and immunofluorescence staining were performed to detect the expression of target proteins. KF tissues were isolated, cultured, and divided into the control, silenced connective tissue growth factor (CTGF) proteins, and shNC (negative control) groups.ResultsGenistein suppressed cell proliferation and migration, triggering the cell cycle at the G2/M phase and increasing the expression of p53 dose-dependent in keloids. Genistein inhibited the expression of COL1A1, FN, and CTGF mRNA and protein. Knockdown CTGF reduced the migrated ability in KFs. Genistein also abated TGF-β1-induced keloid fibrosis through the endocytosis model. Separated and cultured the keloid patient’s tissues decreased the cell migration ability by genistein treatment and was time-dose dependent.ConclusionsThis study indicated that genistein-induced p53 undergoes cell cycle arrest via the CTGF pathway-inhibited keloid cultured cells, and genistein suppressed the primary keloid cell migration, suggesting that our research provides a new strategy for developing drugs for treating keloids.
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