Open AccessMechanical force modulates periodontal ligament stem cell characteristics during bone remodelling via TRPV4
Author(s) -
Jin ShanShan,
He DanQing,
Wang Yu,
Zhang Ting,
Yu HuaJie,
Li ZiXin,
Zhu LiSha,
Zhou YanHeng,
Liu Yan
Publication year - 2020
Publication title -
cell proliferation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.647
H-Index - 74
eISSN - 1365-2184
pISSN - 0960-7722
DOI - 10.1111/cpr.12912
Subject(s) - periodontal ligament stem cells , microbiology and biotechnology , osteoclast , rankl , periodontal fiber , stem cell , chemistry , mesenchymal stem cell , proinflammatory cytokine , cellular differentiation , mapk/erk pathway , osteoblast , signal transduction , immunology , biology , in vitro , medicine , inflammation , dentistry , activator (genetics) , biochemistry , receptor , alkaline phosphatase , gene , enzyme
Abstract Objectives Mechanical force plays an important role in modulating stem cell fate and behaviours. However, how periodontal ligament stem cells (PDLSCs) perceive mechanical stimulus and transfer it into biological signals, and thereby promote alveolar bone remodelling, is unclear. Materials and Methods An animal model of force‐induced tooth movement and a compressive force in vitro was used. After force application, tooth movement distance, mesenchymal stem cell and osteoclast number, and proinflammatory cytokine expression were detected in periodontal tissues. Then, rat primary PDLSCs with or without force loading were isolated, and their stem cell characteristics including clonogenicity, proliferation, multipotent differentiation and immunoregulatory properties were evaluated. Under compressive force in vitro, the effects of the ERK signalling pathway on PDLSC characteristics were evaluated by Western blotting. Results Mechanical force in vivo induced PDLSC proliferation, which was accompanied with inflammatory cytokine accumulation, osteoclast differentiation and TRPV4 activation; the force‐stimulated PDLSCs showed greater clonogenicity and proliferation, reduced differentiation ability, improved induction of macrophage migration, osteoclast differentiation and proinflammatory factor expression. The biological changes induced by mechanical force could be partially suppressed by TRPV4 inhibition. Mechanistically, force‐induced activation of TRPV4 in PDLSCs regulated osteoclast differentiation by affecting the RANKL/OPG system via ERK signalling. Conclusions Taken together, we show here that TRPV4 activation in PDLSCs under mechanical force contributes to changing their stem cell characteristics and modulates bone remodelling during tooth movement.