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International Journal of Bioprinting                                     Biomimetic osteochondral scaffold





































































            Figure 7. Osteogenic differentiation of rat bone marrow mesenchymal   Figure 8. Chondrogenic differentiation of rat bone marrow mesenchymal
            stem cells (rBMSCs) in the integrated osteochondral scaffolds. (A–C)   stem cell (rBMSC) microspheres in the integrated osteochondral tissue
            Immunofluorescence staining of F-actin (red), osteogenic biomarkers   engineering scaffolds. (A–C) Immunofluorescence staining of F-actin
            (RUNX2, COL I, and OCN) (green), and DAPI (blue) at the subchondral   (red), chondrogenic biomarkers (SOX9, COL II, and ACAN) (green),
            or  cartilage layer  of  the  integrated osteochondral  scaffolds.  (D)   and DAPI (blue) at the cartilage or subchondral layer of the integrated
            Expression of osteogenic genes, including OCN, COL I, and RUNX2,   osteochondral scaffolds. (D) Expression of chondrogenic genes, including
            at the subchondral layer of the integrated osteochondral scaffolds. *p <   SOX9, COL II, and ACAN, at the cartilage layer of the integrated
            0.05; ns denotes p > 0.05. Abbreviations: BMP-2, bone morphogenetic   osteochondral scaffolds. *p < 0.05. Abbreviations: ACAN, aggrecan; BMP-
            protein-2; COL I, collagen I; FGF-18, fibroblast growth factor-18; OCN,   2, bone morphogenetic protein-2; COL II, collagen II; CM, chondrogenic
            osteocalcin; OM, osteogenic medium; RUNX2, runt-related transcription   medium; FGF-18, fibroblast growth factor-18; SOX9, sry-related HMG
            factor factor-2; TCP, tissue culture plate group.   box protein-9; TCP, tissue culture plate group.

            Volume 10 Issue 5 (2024)                       210                                doi: 10.36922/ijb.3229
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