The Wnt/β-catenin pathway has a role in osteoblast differentiation and bone formation. We screened 100 plant extracts and identified an extract from Euodia sutchuenensis Dode (ESD) leaf and young branch as an effective activator of the Wnt/β-catenin pathway. ESD extract increased β-catenin levels and β-catenin nuclear accumulation in murine primary osteoblasts. The ESD extract also increased mRNA levels of osteoblast markers, including RUNX2, BMP2 and COL1A1, and enhanced alkaline phosphatase (ALP) activity in murine primary osteoblasts. Both ESD extract-induced β-catenin increment and ALP activation were abolished by β-catenin knockdown, confirming that the Wnt/β-catenin pathway functions in osteoblast differentiation. ESD extract enhanced terminal osteoblast differentiation as shown by staining with Alizarin Red S and significantly increased murine calvarial bone thickness. This study shows that ESD extract stimulates osteoblast differentiation via the Wnt/β-catenin pathway and enhances murine calvarial bone formation ex vivo.
|Journal||Experimental and Molecular Medicine|
|Publication status||Published - 2015|
Bibliographical noteFunding Information:
This work was supported by grants from the National Research Foundation (NRF) funded by the Ministry of Education, Science and Technology of Korea (the Mid-career Researcher Program (2012-010285), Translational Research Center for Protein Function Control; 2009-0083522) and Stem Cell Research Project (2010-0020235). This work was also supported by a grant from the Korea Research Institute of Chemical Technology (SI-095). J-H Hwang was supported by a BK21 scholarship from the Ministry of Education and Human Resources Development.
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All Science Journal Classification (ASJC) codes
- Molecular Medicine
- Molecular Biology
- Clinical Biochemistry