Skip to main navigation Skip to search Skip to main content

Impaired bone fracture healing in matrix metalloproteinase-13 deficient mice

  • Naoto Kosaki
  • , Hironari Takaishi
  • , Satoru Kamekura
  • , Tokuhiro Kimura
  • , Yasunori Okada
  • , Li Minqi
  • , Norio Amizuka
  • , Ung il Chung
  • , Kozo Nakamura
  • , Hiroshi Kawaguchi
  • , Yoshiaki Toyama
  • , Jeanine D'Armiento

Research output: Contribution to journalArticlepeer-review

Abstract

Vascular and cellular invasion into the cartilage is a critical step in the fracture healing. Matrix metalloproteinase-13 (MMP-13) is a member of the zinc-dependent endopeptidase family and plays an important role in remodeling of extracellular matrix. Therefore we investigated the possible involvement of MMP-13 in a murine model of stabilized bone fracture healing. Repair of the fracture in MMP-13 deficient (MMP-13-/-) mice was significantly delayed and characterized by a retarded cartilage resorption in the fracture callus. Immunohistochemistry indicated severe defects in vascular penetration and chondroclast recruitment to the fracture callus in MMP-13-/- mice. Consistent with the observations, the chondrocyte pellets cultured from the MMP13-/- mice exhibited diminished angiogenic activities when the pellets were co-cultured with endothelial cells. These results suggest that MMP-13 is crucial to the process of angiogenesis during healing of fracture, especially in the cartilage resorption process.

Original languageEnglish
Pages (from-to)846-851
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume354
Issue number4
DOIs
Publication statusPublished - 2007 Mar 23
Externally publishedYes

Keywords

  • Angiogenesis
  • Chondroclast
  • Extracellular matrix
  • Fracture healing
  • MMP-13

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

Fingerprint

Dive into the research topics of 'Impaired bone fracture healing in matrix metalloproteinase-13 deficient mice'. Together they form a unique fingerprint.

Cite this