Amino Acids

, Volume 39, Issue 1, pp 89–99

Taurine inhibits osteoclastogenesis through the taurine transporter

  • Ling-Qing Yuan
  • Wei Liu
  • Rong-Rong Cui
  • Dan Wang
  • Ji-Cai Meng
  • Hui Xie
  • Xian-Ping Wu
  • Hou-De Zhou
  • Ying Lu
  • Er-Yuan Liao
Original Article

DOI: 10.1007/s00726-009-0380-2

Cite this article as:
Yuan, LQ., Liu, W., Cui, RR. et al. Amino Acids (2010) 39: 89. doi:10.1007/s00726-009-0380-2

Abstract

Several studies have suggested a direct link between taurine and bone homeostasis. However, the mechanisms of taurine on the regulation of bone metabolism have not been elucidated. Using a coculture of osteoblasts and bone marrow cells as a model for the study of osteoclastogenesis, RANKL-stimulated RAW264.7 cells and M-CSF- and RANKL-induced bone marrow macrophages were investigated to elucidate the possible roles of taurine in osteoclastogenesis. Taurine inhibited osteoclastogenesis in the coculture of osteoblasts and bone marrow cells, but did not influence the expression of OPG and RANKL in osteoblasts. The taurine transporter (TAUT) expressed by RAW264.7 and bone marrow macrophages exhibited typical taurine uptake activity. Taurine directly reduced osteoclastogenesis in RANKL-stimulated RAW264.7 cells and M-CSF- and RANKL-induced bone marrow macrophages, while TAUT siRNA relieved this effect. Our study demonstrated that taurine directly inhibited osteoclastogenesis through the taurine transporter. Taken together, these data suggest that taurine plays a direct role in bone homeostasis by inhibiting osteoclastogenesis.

Keywords

TaurineTaurine transporterOsteoclastogenesissiRNA

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Ling-Qing Yuan
    • 1
  • Wei Liu
    • 1
  • Rong-Rong Cui
    • 1
    • 2
  • Dan Wang
    • 1
  • Ji-Cai Meng
    • 1
  • Hui Xie
    • 1
  • Xian-Ping Wu
    • 1
  • Hou-De Zhou
    • 1
  • Ying Lu
    • 1
  • Er-Yuan Liao
    • 1
  1. 1.Institute of Metabolism and Endocrinology, The Second Xiang-Ya HospitalCentral South UniversityChangshaPeople’s Republic of China
  2. 2.Department of Pediatrics, The Second Xiang-Ya HospitalCentral South UniversityChangshaPeople’s Republic of China