Amelogenin stimulates bone sialoprotein (BSP) expression through fibroblast growth factor 2 response element and transforming growth factor-β1 activation element in the promoter of the BSP gene
2005
Background: Amelogenins are a complex mixture of hydrophobic proteins that are the major organic component of developing enamel. The principal function of the amelogenins and their degradation products has been assigned to structural roles in creating the space and milieu for promoting enamel mineralization. Enamel matrix derivative (EMD) has been used clinically for periodontal regeneration and its therapeutic effectiveness has been attributed to amelogenin, non-amelogenin enamel matrix proteins, and growth factors. While EMD is believed to induce periodontal regeneration, the precise mechanism is not known. Bone sialoprotein (BSP), an early phenotypic marker of osteoblast and cementoblast differentiation, has been implicated in the nucleation of hydroxyapatite during bone formation. In this study, we examined the ability of amelogenin to regulate BSP gene transcription in osteoblast like cells. Methods: We conducted Northern hybridization, transient transfection analyses, and gel mobility shift assays u...
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