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- W3184135058 abstract "Abstract Background: Osteoarthritis (OA) is a debilitating disease that inflicts intractable pain, a major problem that humanity faces, especially in aging populations. Stem cells have been used in the treatment of many chronic diseases, including OA. Cartilage progenitor cells (CPCs) are a type of stem cells with the ability to self- renew and differentiate. They hold a promising future for the understanding of the progression of OA and for its treatment. Previous studies have reported the relationship between mitochondrial dynamics and mesenchymal stem cell (MSC) proliferation, differentiation and aging. Mitochondrial dynamic and morphology change during stem cell differentiation. Methods: This study was performed to access the relationship between mitochondrial dynamics and chondrogenic differentiation of CPCs. Mitochondrial fusion and fission levels were measured during the chondrogenic differentiation process of CPCs. After that, we used mitochondrial fusion promoter to induce fusion in CPCs and then the chondrogenic markers were measured. Using Transmission Elecron Microscopy (TEM) and confocal microscopy to capture the mass and fusion status of mitochondria. Lentiviruses were used to detect the role of mitofusin 2 (MFN2) in CPC chondrogenic differentiation. In vivo , MNF2 was over-expressed in sheets of rCPCs, which were then injected intra-articularly into the knees of rats. Results: Mitochondrial fusion markers were upregulated during the chondrogenic induction process of CPCs. The mass of mitochondria was higher in differentiated CPC and the fusion status was obvious relative to un-differentiated CPC. Chondrogenesis of CPCs was upregulated with the induction by mitochondrial fusion promoter. MFN2 over-expression significantly increased chondrocyte-specific gene expression and reversed OA through Notch2 signal pathway. Conclusions: Our study demonstrated that the mitochondrial fusion promotes chondrogenesis differentiation of CPCs. MFN2 accelerates the chondrogenesis differentiation of CPCs through Notch2. In vivo , MNF2-OE in sheets of rCPCs ameliorated OA in the rat model." @default.
- W3184135058 created "2021-08-02" @default.
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- W3184135058 date "2021-07-20" @default.
- W3184135058 modified "2023-09-25" @default.
- W3184135058 title "The Effect of Mitochondrial Fusion on Chondrogenic Differentiation of Cartilage Progenitor Cells via Notch2 Signal Pathway" @default.
- W3184135058 doi "https://doi.org/10.21203/rs.3.rs-716861/v1" @default.
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