Research Article

HIF1α Promotes BMP9-Mediated Osteoblastic Differentiation and Vascularization by Interacting with CBFA1

Figure 3

Silencing HIF1α and Runx2 effectively diminishes the BMP9-induced early osteogenic differentiation and late matrix mineralization of iMEFs. (a) Silencing HIF1α and Runx2 inhibited BMP9-induced ALP activity in iMEFs. (b) The matrix mineralization of iMEFs was evaluated by an Alizarin Red S staining assay. Representative gross images and microscopic images of cells subjected to the above treatments are shown after transfection. Alizarin Red S staining shows the effect of silencing HIF1α and Runx2 on BMP9-induced matrix mineralization in iMEFs (). (c) Quantification results showed that silencing HIF1α and Runx2 diminished BMP9-induced ALP activity and matrix mineralization, respectively ().
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