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Enhancement of osteoblast differentiation that is inhibited by titanium particles through inactivation of NFATc1 by VIVIT peptide
Author(s) -
Maoqiang Li,
Zhenan Zhu,
Fengxiang Liu,
Gang Wang,
Yuanqing Mao,
Ming Liu,
Xin Zhao,
Tingting Tang
Publication year - 2010
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.32891
Subject(s) - osteoblast , osteolysis , calvaria , materials science , osteoclast , microbiology and biotechnology , peptide , mineralization (soil science) , cellular differentiation , cell culture , cancer research , biophysics , chemistry , biology , biochemistry , in vitro , medicine , dentistry , genetics , organic chemistry , gene , nitrogen
Bone formation, which is inhibited by particulate wear debris, is a pathological factor that contributes to periprosthetic osteolysis. Although the nuclear factor of activated T cells c1 (NFATc1) is known to be involved in osteoblast differentiation, and its effect on osteoblasts in response to wear particles remains unclear. In this study, we investigated the role of NFATc1 in the regulation of osteoblastic differentiation of rat calvaria (RC) cells (a cell‐culture model comprising many osteoprogenitors) that were challenged with titanium (Ti) particles. The results showed that the Ti particles inhibited osteoblastic differentiation and mineralization of RC cells. NFATc1 plays a critical role in the Ti‐particle inhibition process of the osteoblastic differentiation in RC cells. Inactivation of NFATc1 by the 11R‐VIVIT peptide potently enhanced osteoblast differentiation and mineralization inhibition by the Ti particles. The 11R‐VIVIT peptide does not have a toxic effect on the RC cells. On the basis of these data, we conclude that inactivation of NFATc1 by the 11R‐VIVIT peptide may provide a promising therapeutic target for the treatment of periprosthetic osteolysis by increasing bone formation. © 2010 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2010.