Ghrelin Fights Against Titanium Particle-Induced Inflammatory Osteolysis Through Activation of β-Catenin Signaling Pathway

Ruize Qu, Xiaomin Chen, Yongjian Yuan, Wenhan Wang, Cheng Qiu, Long Liu, Peng Li, Zhaoyang Zhang, Krasimir Vasilev, Liang Liu, John Hayball, Yunpeng Zhao, Yuhua Li, Weiwei Li

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Aseptic loosening is a major complication of prosthetic joint surgery, in which exaggerated inflammation and impaired osteoblastogenesis are detected. Ghrelin is a recently discovered neuropeptide that is closely associated with inflammatory conditions and bone regeneration. Here, we report that titanium particles inhibited ghrelin expression in MC3T3-E1 cells. Furthermore, exogenous ghrelin effectively inhibited titanium particle-induced inflammation in vitro by interacting with its receptor GHSR1a; as an inhibitor of GHSR1a, Dlys repressed the function of ghrelin. Moreover, ghrelin attenuated the impairment of osteoblastogenesis and the exaggeration of osteolysis induced by titanium particles. Furthermore, the protective role of ghrelin in aseptic loosening might be associated with the Wnt/β-catenin signaling pathway. Collectively, these findings suggest that ghrelin might be a potential therapeutic target for wear-debris-induced inflammation and osteolysis.

Original languageEnglish
Pages (from-to)1652-1665
Number of pages14
JournalINFLAMMATION
Volume42
Issue number5
DOIs
Publication statusPublished - 15 Oct 2019
Externally publishedYes

Keywords

  • ghrelin
  • osteoblastogenesis
  • osteolysis
  • wear debris
  • β-catenin

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