Abstract
OVO homologue-like 1 (OVOL1) encodes a C2H2 zinc finger protein and is an evolutionarily conserved gene in mammals. The OVOL1 expression is required for development. However, the function of OVOL1 in bone metabolism remains unreported. Here, we show for the first time the role of OVOL1 in osteoblast differentiation. To determine the role of OVOL1 in osteogenic differentiation, we analyzed OVOL1 expression in the preosteoblastic cell line. OVOL1 messenger RNA expression was induced during osteoblast differentiation. In addition, OVOL1 overexpression enhanced the expression of osteogenic genes including bone morphogenetic protein 2 (BMP2), the inhibitor of DNA binding 1 (Id1), distal-less homeobox 5 (Dlx5), runt-related transcription factor 2 (Runx2), osteocalcin (OC), and alkaline phosphatase (ALP). Moreover, mineralization of the extracellular matrix was increased by OVOL1 overexpression in MC3T3-E1 cells. Furthermore, knockdown of the OVOL1 experiment demonstrated that OVOL1 is required for osteoblast differentiation. Collectively, these results suggest that OVOL1 function as an important regulator of osteoblast differentiation by inducing BMP2 expression in MC3T3-E1 cells.
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