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Structural colocalisation of type VI collagen and fibronectin in agarose cultured chondrocytes and isolated chondrons extracted from adult canine tibial cartilage

Published online by Cambridge University Press:  01 June 1997

JIANG CHANG
Affiliation:
Department of Anatomy, Faculty of Medicine and Health Sciences, University of Auckland, New Zealand
HIDETO NAKAJIMA
Affiliation:
Department of Orthopaedic Surgery, National Defense Medical College, Saitama, Japan
C. ANTHONY POOLE
Affiliation:
Department of Anatomy, Faculty of Medicine and Health Sciences, University of Auckland, New Zealand
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Abstract

Cell–matrix and matrix–matrix interactions are of critical importance in regulating the development, maintenance and repair of articular cartilage. In this study, we examined the structural colocalisation of type VI collagen and fibronectin in isolated chondrons and long-term agarose cultured chondrocytes extracted from normal adult canine articular cartilage. Using double labelling immunohistochemistry in conjunction with dual channel confocal microscopy and digital image processing we demonstrate that type VI collagen and fibronectin are distributed in a similar staining pattern and are colocalised at the surface of cultured chondrocytes and isolated chondrons. The results suggest that type VI collagen and fibronectin may play a role in both cell–matrix adhesion and matrix–matrix cohesion in the pericellular microenvironment surrounding articular cartilage chondrocytes.

Type
Research Article
Copyright
© Anatomical Society of Great Britain and Ireland 1997

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