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| http://purl.uniprot.org/citations/30910359 | http://www.w3.org/2000/01/rdf-schema#comment | "The mammalian Ste20-like kinase (MST) pathway or Hippo pathway plays essential roles in cell proliferation, apoptosis, organ size control, and development. Runx2 is a key transcription factor in osteoblast differentiation. The objective of this study was to investigate whether the MST pathway could modulate Runx2 and osteoblast differentiation. First, we found that Runx2 interacted with MST2 and SAV1 via the WW domain of SAV1 and amino acid 292-445 of Runx2 containing a PY motif. Results of OSE luciferase reporter assay revealed that co-expression of MST2 and SAV1 inhibited the transcriptional activity of Runx2 whereas siRNA-mediated down-regulation of Mst1 and Mst2 increased its activity. MST2 and SAV1 significantly reduced mRNA levels of osteoblast differentiation marker genes such as alkaline phosphatase and osteocalcin in differentiating C2C12 cells. MST2 and SAV1 also hampered osteoblast differentiation of C2C12 cells induced by Runx2 as shown by alkaline phosphatase activity assay and Alizarin Red staining. Mass spectrometric analysis of immunoprecipitated Runx2 protein from HEK293 cells overexpressing MST2 and SAV1 revealed two novel phosphorylation sites at Ser-339 and Ser-370 residues of mouse Runx2 protein. Mutation of both serine residues to alanine interfered with the inhibitory effect of MST2 and SAV1 on the transcriptional activity of Runx2 and osteoblast differentiation induced by Runx2. Our results suggest that the MST kinase pathway can directly regulate osteoblast differentiation by modulating Runx2 activity through phosphorylation."xsd:string |
| http://purl.uniprot.org/citations/30910359 | http://purl.org/dc/terms/identifier | "doi:10.1016/j.bbrc.2019.03.097"xsd:string |
| http://purl.uniprot.org/citations/30910359 | http://purl.uniprot.org/core/author | "Lee Y."xsd:string |
| http://purl.uniprot.org/citations/30910359 | http://purl.uniprot.org/core/author | "Lee Y.H."xsd:string |
| http://purl.uniprot.org/citations/30910359 | http://purl.uniprot.org/core/author | "Sung M."xsd:string |
| http://purl.uniprot.org/citations/30910359 | http://purl.uniprot.org/core/author | "Won G.W."xsd:string |
| http://purl.uniprot.org/citations/30910359 | http://purl.uniprot.org/core/date | "2019"xsd:gYear |
| http://purl.uniprot.org/citations/30910359 | http://purl.uniprot.org/core/name | "Biochem Biophys Res Commun"xsd:string |
| http://purl.uniprot.org/citations/30910359 | http://purl.uniprot.org/core/pages | "591-597"xsd:string |
| http://purl.uniprot.org/citations/30910359 | http://purl.uniprot.org/core/title | "MST2 kinase regulates osteoblast differentiation by phosphorylating and inhibiting Runx2 in C2C12 cells."xsd:string |
| http://purl.uniprot.org/citations/30910359 | http://purl.uniprot.org/core/volume | "512"xsd:string |
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