Ginsenoside Rg1 Improves Differentiation by Inhibiting Senescence of Human Bone Marrow Mesenchymal Stem Cell Via GSK-3 and -Catenin
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Objectives: To demonstrate the effect of Ginsenoside Rg1 on the differentiation of human bone marrow-derived mesenchymal stem cells (hBM-MSCs). Subsequently, a rational mechanism for the detection of Rg1 which affects mesenchymal stem cell differentiation was explored.
Methods: Flow cytometry is used for cell identification. The differentiation ability of hBM-MSCs was studied by differentiation culture. SA--gal staining is used to detect cell senescence levels. Western blot and immunofluorescence were used to determine protein expression levels. RT-qPCR is used to detect mRNA expression levels.
Results: Rg1 regulates the differentiation of hBM-MSCs. Differentiation culture analysis showed that Rg1 promoted cells to osteogenesis and chondrogenesis. Western blot results showed that Rg1 regulated the overactivation of the -catenin signaling pathway and significantly adjusted the phosphorylation of GSK-3. GSK-3 inhibitor (Licl) significantly increased Rg1-induced phosphorylation of GSK-3, which in turn reduced Rg1-induced differentiation of hBM-MSCs.
Conclusion: Ginsenoside Rg1 can reduce the excessive activation of the Wnt pathway in senescent cells by inhibiting the phosphorylation of GSK-3 and regulate the mesenchymal stem cell differentiation ability.
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