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Vitamin D represses dentin matrix protein 1 in cementoblasts and osteocytes
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نویسنده
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nociti f.h. ,foster b.l. ,tran a.b. ,dunn d. ,presland r.b. ,wang l. ,bhattacharyya n. ,collins m.t. ,somerman m.j.
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منبع
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journal of dental research - 2014 - دوره : 93 - شماره : 2 - صفحه:148 -154
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چکیده
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Calcium and phosphorus homeostasis is achieved by interplay among hormones,including 1,25(oh)2d3 (1,25d),parathyroid hormone,and fibroblast growth factor 23 (fgf23),and their interactions with other proteins. for example,mutations in dentin matrix protein 1 (dmp-1) result in increased fgf23 and hypophosphatemic rickets. 1,25d is reported to modulate fgf23; thus,we hypothesized that 1,25d may be involved in modulating dmp-1 in an intermediary step. murine cementoblasts (occm-30) and osteocyte-like cells (mlo-y4 and mlo-a5),known to express dmp-1,were used to analyze effects of 1,25d on dmp-1 expression in vitro. dmp-1 mrna levels decreased by 50% (p <.05) in the presence of 1,25d in all cell types,while use of a vitamin d receptor (vdr) agonist (eb1089) and antagonist (23s,25s)-dlam-2p confirmed that vdr pathway activation was required for this response. further analysis showed that histone deacetylase recruitment was necessary,but neither protein kinase a nor c pathways were required. in conclusion,our results support the hypothesis that 1,25d regulates dmp-1 expression through a vdr-dependent mechanism,possibly contributing to local changes in bone/tooth mineral homeostasis. © international & american associations for dental research.
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کلیدواژه
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fibroblast growth factor 23; osteogenesis; phosphate homeostasis; phosphate regulating endopeptidase homolog; SIBLING family; Vitamin D receptor
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آدرس
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national institute of arthritis and musculoskeletal and skin diseases,national institutes of health,bethesda,md,united states,department of prosthodontics and periodontics,piracicaba dental school,state university of campinas,piracicaba,são paulo, Brazil, national institute of arthritis and musculoskeletal and skin diseases,national institutes of health,bethesda,md, United States, national institute of arthritis and musculoskeletal and skin diseases,national institutes of health,bethesda,md, United States, department of periodontics,university of washington school of dentistry,seattle,wa, United States, department of oral health sciences,university of washington school of dentistry,seattle,wa, United States, national institute of arthritis and musculoskeletal and skin diseases,national institutes of health,bethesda,md, United States, national institute of dental and craniofacial research,national institutes of health,bethesda,md, United States, national institute of dental and craniofacial research,national institutes of health,bethesda,md, United States, national institute of arthritis and musculoskeletal and skin diseases,national institutes of health,bethesda,md, United States
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Authors
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