Acceleration of bone regeneration by local application of lithium: Wnt signal-mediated osteoblastogenesis and Wnt signal-independent suppression of osteoclastogenesis

masaki arioka, Fumi Takahashi, Masanori Sasaki, Tatsuya Yoshihara, Sachio Morimoto, Masato Hirata, Yoshihide Mori, Toshiyuki Sasaguri

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Inhibition of glycogen synthase kinase (GSK)-3 and the consequent activation of the Wnt/β-catenin signaling pathway have been reported to increase bone volume. To develop a novel pharmacotherapy for injured bone, we investigated whether GSK-3 inhibitor was effective in promoting bone formation. In in vitro experiments, we examined the effects of GSK-3 inhibitors LiCl and SB216763 on osteoblastogenesis of mesenchymal progenitor C3H10T1/2 cells and osteoclastogenesis of osteoclast precursor RAW-D cells. Both inhibitors promoted osteoblast differentiation, assessed by alkaline phosphatase activity and calcium deposition, stimulating the Wnt/β-catenin signaling pathway and thereby inducing Runx2. On the other hand, the GSK-3 inhibitors suppressed osteoclast differentiation, assessed by tartrate-resistant acid phosphatase staining and number of nuclei in the cells, reducing NFATc1 expression independently of the Wnt/β-catenin signaling pathway. In subsequently performed in vivo studies, we examined the effect of locally administered Li2CO3 on the recovery from a partial defect made on the rat tibia. Computerized tomography and bone histomorphometry showed that Li 2CO3 accelerated bone regeneration in defect lesion with increased lamellar bone ratio compared with the controls. These results suggested that local application of lithium (or other GSK-3 inhibitors) might effectively facilitate recovery from bone injury by promoting osteoblastogenesis and inhibiting osteoclastogenesis.

Original languageEnglish
Pages (from-to)397-405
Number of pages9
JournalBiochemical Pharmacology
Volume90
Issue number4
DOIs
Publication statusPublished - Aug 15 2014

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Glycogen Synthase Kinase 3
Bone Regeneration
Lithium
Osteogenesis
Bone
Catenins
Wnt Signaling Pathway
Bone and Bones
Osteoclasts
Somatostatin-Secreting Cells
Cell Nucleus
Osteoblasts
Tibia
Drug therapy
Recovery
Alkaline Phosphatase
Defects
Computerized tomography
Tomography
Acid Phosphatase

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Pharmacology

Cite this

Acceleration of bone regeneration by local application of lithium : Wnt signal-mediated osteoblastogenesis and Wnt signal-independent suppression of osteoclastogenesis. / arioka, masaki; Takahashi, Fumi; Sasaki, Masanori; Yoshihara, Tatsuya; Morimoto, Sachio; Hirata, Masato; Mori, Yoshihide; Sasaguri, Toshiyuki.

In: Biochemical Pharmacology, Vol. 90, No. 4, 15.08.2014, p. 397-405.

Research output: Contribution to journalArticle

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