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• W2043281974 endingPage "e43383" @default.
• W2043281974 startingPage "e43383" @default.
• W2043281974 abstract "Although previous studies have demonstrated that BMP9 is highly capable of inducing osteogenic differentiation and bone formation, the precise molecular mechanism involved remains to be fully elucidated. In this current study, we explore the possible involvement and detail effects of p38 and ERK1/2 MAPKs on BMP9-induced osteogenic differentiation of mesenchymal progenitor cell (MPCs). We find that BMP9 simultaneously stimulates the activation of p38 and ERK1/2 in MPCs. BMP9-induced early osteogenic marker, such as alkaline phosphatase (ALP), and late osteogenic markers, such as matrix mineralization and osteocalcin (OC) are inhibited by p38 inhibitor SB203580, whereas enhanced by ERK1/2 inhibitor PD98059. BMP9-induced activation of Runx2 and Smads signaling are reduced by SB203580, and yet increased by PD98059 in MPCs. The in vitro effects of inhibitors are reproduced with adenoviruses expressing siRNA targeted p38 and ERK1/2, respectively. Using mouse calvarial organ culture and subcutaneous MPCs implantation, we find that inhibition of p38 activity leads to significant decrease in BMP9-induced osteogenic differentiation and bone formation, however, blockage of ERK1/2 results in effective increase in BMP9-indcued osteogenic differentiation in vivo. Together, our results reveal that p38 and ERK1/2 MAPKs are activated in BMP9-induced osteogenic differentiation of MPCs. What is most noteworthy, however, is that p38 and ERK1/2 act in opposition to regulate BMP9-induced osteogenic differentiation of MPCs." @default.
• W2043281974 created "2016-06-24" @default.
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• W2043281974 date "2012-08-17" @default.
• W2043281974 modified "2023-10-17" @default.
• W2043281974 title "P38 and ERK1/2 MAPKs Act in Opposition to Regulate BMP9-Induced Osteogenic Differentiation of Mesenchymal Progenitor Cells" @default.
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• W2043281974 doi "https://doi.org/10.1371/journal.pone.0043383" @default.
• W2043281974 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3422272" @default.
• W2043281974 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22912865" @default.
• W2043281974 hasPublicationYear "2012" @default.
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