The Expression of Angiopoietin-1 and -2 in the Osteogenesis of Mesenchymal Stem Cells
Chen, J.; Yang, G.; Guo, J.; Liu, Y.; Guo, J.; Suo, J.; Yu, H.
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ObjectiveThe objectives of this study are to clarify whether rat bone marrow derived Mesenchymal stem cells (MSCs) express Ang1 and Ang2 and their expression in the process of osteogenesis in vitro. Material and MethodsMSCs were cultured from rat tibia bone marrow cells and the hemopoietic stem cells were deplete by consistently replacement of the culture medium. The MSCs were induced osteogenesis with mineralization conditional medium and Immunohistochemical and immunofluorescent staining were performed to assess the expression of Ang1 and Ang2. ResultsThe method used to expand rat MSCs in vitro was applicable, and the cell morphology is spindle-like shape that is consistent with the privous reports. The immunohistochemical staining results showed that both Ang1 and Ang2 were expressed by rat MSCs. Both Ang1 and Ang2 were up-regulated in the process of osteogenesis of rat MSCs. ConclusionRat MSCs express both Ang1 and Ang2 which might play critical roles in the osteogenesis in vitro.
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