Title : 9-cis retinoic acid accelerates calcitriol-induced osteocalcin production and promotes degradation of both vitamin D receptor and retinoid X receptor in human osteoblastic cells.

Pub. Date : 2003 Aug 15

PMID : 12898515






6 Functional Relationships(s)
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1 9-cis retinoic acid accelerates calcitriol-induced osteocalcin production and promotes degradation of both vitamin D receptor and retinoid X receptor in human osteoblastic cells. Alitretinoin bone gamma-carboxyglutamate protein Homo sapiens
2 In this study, we show that 9-cis retinoic acid (9-cisRA), the ligand for RXR, accelerates calcitriol-induced expression of osteocalcin gene, the marker for mature osteoblasts. Alitretinoin bone gamma-carboxyglutamate protein Homo sapiens
3 In this study, we show that 9-cis retinoic acid (9-cisRA), the ligand for RXR, accelerates calcitriol-induced expression of osteocalcin gene, the marker for mature osteoblasts. Alitretinoin bone gamma-carboxyglutamate protein Homo sapiens
4 In combination treatments, 9-cisRA rapidly stimulated osteocalcin mRNA synthesis induced by the different vitamin D(3) compounds. Alitretinoin bone gamma-carboxyglutamate protein Homo sapiens
5 Furthermore, 9-cisRA increased the formation of RXRbeta-VDR-VDRE complex on the osteocalcin gene VDRE. Alitretinoin bone gamma-carboxyglutamate protein Homo sapiens
6 These results suggest that 9-cisRA accelerates calcitriol-induced osteocalcin production in human osteoblastic cells through increased formation of transcriptionally active chromatin complexes and, subsequently, promotes degradation of the heterodimeric complex of VDR and RXR. Alitretinoin bone gamma-carboxyglutamate protein Homo sapiens