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Opg, Rank, and Rankl in tooth development: co-ordination of odontogenesis and osteogenesis
journal contribution
posted on 2023-05-17, 20:43 authored by Ohazama, A, Jo-Maree CourtneyJo-Maree Courtney, Sharpe, PTOsteoprotegerin (OPG), receptor activator of nuclear factor-kappaB (RANK), and RANK ligand (RANKL) are mediators of various cellular interactions, including bone metabolism. We analyzed expression of these three genes during murine odontogenesis from epithelial thickening to cytodifferentiation stages. Opg showed expression in the thickening and bud epithelium. Expression of Opg and Rank was observed in both the internal and the external enamel epithelium as well as in the dental papilla mesenchyme. Although Rankl expression was not detected in tooth epithelium or mesenchyme, it was expressed in pre-osteogenic mesenchymal cells close to developing tooth germs. All three genes were detected in developing dentary bone at P0. The addition of exogenous OPG to explant cultures of tooth primordia produced a delay in tooth development that resulted in reduced mineralization. We propose that the spatiotemporal expression of these molecules in early tooth and bone primordia cells has a role in co-ordinating bone and tooth development.
History
Publication title
Journal of Dental ResearchVolume
83Pagination
241-4ISSN
0022-0345Department/School
Tasmanian School of MedicinePublisher
Int Amer Assoc Dental Researchi A D R/A A D RPlace of publication
1619 Duke St, Alexandria, USA, Va, 22314-3406Repository Status
- Restricted