Research Article

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

Figure 1

HIF1α and Runx2 potentiate BMP9-induced early osteogenic differentiation and late matrix mineralization of iMEFs. (a) Overexpression of HIF1α promotes BMP9-induced alkaline phosphatase (ALP) activity in iMEFs. (b) An Alizarin Red S staining assay was used to evaluate the matrix mineralization of iMEFs. Representative gross images and microscopic images in response to the above treatments are shown after transfection. Alizarin Red S staining shows the effect of HIF1α and Runx2 on BMP9-induced matrix mineralization in iMEFs (). (c) Quantification results showed that HIF1α and Runx2 enhanced BMP9-induced ALP activity and matrix mineralization, respectively ().
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