Direct interaction between CCN family protein 2 and fibroblast growth factor 1

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Abstract

In an attempt to find out a new molecular counterpart of CCN family protein 2 (CCN2), a matricellular protein with multiple functions, we performed an interactome analysis and found fibroblast growth factor (FGF) -1 as one of the candidates. Solid-phase binding assay indicated specific binding between CCN2 and FGF-1. This binding was also confirmed by surface plasmon resonance (SPR) analysis that revealed a dissociation constant (Kd) of 3.98 nM indicating strong molecular interaction between the two. RNA analysis suggested that both FGF-1 and CCN2 could be produced by chondrocytes and thus their interaction in the cartilage is possible. These findings for the first time indicate the direct interaction of CCN2 and FGF-1 and suggest the co-presence of these molecules in the cartilage microenvironment. CCN2 is a well-known promoter of cartilage development and regeneration, whereas the physiological and pathological role of FGF-1 in cartilage mostly remains unclear. Biological role of FGF-1 itself in cartilage is also suspected.

Original languageEnglish
Pages (from-to)157-163
Number of pages7
JournalJournal of Cell Communication and Signaling
Volume8
Issue number2
DOIs
Publication statusPublished - 2014

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Keywords

  • Cartilage
  • CCN2
  • Chondrocyte
  • CTGF
  • FGF-1

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Molecular Biology

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