Roles of CCN2 as a mechano-sensing regulator of chondrocyte differentiation

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1 Citation (Scopus)

Abstract

Cellular communication network factor 2 (CCN2) is a cysteine-rich secreted matricellular protein that regulates various cellular functions including cell differentiation. CCN2 is highly expressed under several types of mechanical stress, such as stretch, compression, and shear stress, in mesenchymal cells including chondrocytes, osteoblasts, and fibroblasts. In particular, CCN2 not only promotes cell proliferation and differentiation of various cells but also regulates the stability of mRNA of TRPV4, a mechanosensitive ion channel in chondrocytes. Of note, CCN2 behaves like a biomarker to sense suitable mechanical stress, because CCN2 expression is down-regulated when chondrocytes are subjected to excessive mechanical stress. These findings suggest that CCN2 is a mechano-sensing regulator. CCN2 expression is regulated by the activation of various mechano-sensing signaling pathways, e.g., mechanosensitive ion channels, integrin-focal adhesion-actin dynamics, Rho GTPase family members, Hippo-YAP signaling, and G protein-coupled receptors. This review summarizes the characterization of mechanoreceptors involved in CCN2 gene regulation and discusses the role of CCN2 as a mechano-sensing regulator of mesenchymal cell differentiation, with particular focus on chondrocytes.

Original languageEnglish
Pages (from-to)119-126
Number of pages8
JournalJapanese Dental Science Review
Volume56
Issue number1
DOIs
Publication statusPublished - Nov 2020

Keywords

  • Cellular communication network factor 2 (CCN2)
  • Chondrocytes
  • Mechanical stress
  • Mechanoreceptors

ASJC Scopus subject areas

  • Dentistry(all)

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