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成年犬胫骨软骨来源的琼脂糖培养软骨细胞和分离软骨粒中VI型胶原蛋白与纤连蛋白的结构共定位

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

作者信息

Chang J, Nakajima H, Poole C A

机构信息

Department of Anatomy, Faculty of Medicine and Health Sciences, University of Auckland, New Zealand.

出版信息

J Anat. 1997 May;190 ( Pt 4)(Pt 4):523-32. doi: 10.1046/j.1469-7580.1997.19040523.x.

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.

摘要

细胞与基质以及基质与基质之间的相互作用对于调节关节软骨的发育、维持和修复至关重要。在本研究中,我们检测了从正常成年犬关节软骨中提取的分离软骨细胞团和长期琼脂糖培养的软骨细胞中VI型胶原蛋白和纤连蛋白的结构共定位情况。通过结合双通道共聚焦显微镜和数字图像处理的双重标记免疫组织化学方法,我们证明VI型胶原蛋白和纤连蛋白以相似的染色模式分布,并在培养的软骨细胞和分离的软骨细胞团表面共定位。结果表明,VI型胶原蛋白和纤连蛋白可能在关节软骨软骨细胞周围的细胞外微环境中的细胞与基质黏附以及基质与基质黏附中发挥作用。

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