Journal of Oral Science Research ›› 2016, Vol. 32 ›› Issue (3): 216-219.DOI: 10.13701/j.cnki.kqyxyj.2016.03.002

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S1P/S1PR1 Regulates Chemotaxis of Osteoclast Precursors under Compressive Stress.

FANG Jie1, YE Xi1, LI Yu-hong1,2*, HUANG Sheng-fu1,3*   

  1. 1. The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School of Stomatology, Wuhan University, Wuhan 430079, China;
    2. Department of Endodontics, School of Stomatology, Wuhan University, Wuhan 430079, China;
    3. Department of Orthodontics, School of Stomatology, Wuhan University, Wuhan 430079, China
  • Received:2016-02-01 Online:2016-03-28 Published:2016-03-29

Abstract: Objective: To investigate the role of Sphingosine-1-phosphate/Sphingosine-1-phosphate receptor 1 (S1P/S1PR1) axis in regulating migration of osteoclast precursors under compressive stress. Methods: Compressed model was built in vitro. The mRNA and protein expression levels of SPHK1 and S1PR1 in Raw 264.7 cell lines under compressive stress were investigated with real-time PCR, Western-blotting and immunofluoresecence. The regulatory role of S1P/S1PR1 signaling on chemotaxis of Raw 264.7 cell lines under compressive stress was explored. Results: Under compressive force of 0.5, 1.0 and 2.0 g/cm2, SPHK1 and S1PR1 expressions and chemotaxis of Raw 264.7 cell lines were downregulated. And S1P/S1PR1 signaling functional antagonist FTY720 increased the chemotaxis of Raw 264.7 cells. Conclusion: S1P/S1PR1 axis regulates migration of osteoclast precursors under compressive stress.

Key words: S1P/S1PR1 axis, Compressive stress , Osteoclast precursors , Migration

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