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Scaffold-dependent differentiation of human articular chondrocytes

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Matrix-associated autologous chondrocyte transplantation (MACT) is a tissue-engineered approach for the treatment of cartilage defects and combines autologous chondrocytes seeded on biomaterials. The objective of the study is the analysis of growth and differentiation behaviour of human articular chondrocytes grown on three different matrices used for MACT. Human articular chondrocytes were kept in monolayer culture for 42 days and then seeded on matrices consisting of either collagen type I/III, hyaluronan, or gelatine. During the culture time of 4 weeks the constructs were analyzed weekly. Morphological criteria were studied by scanning and transmission electron microscopy. The expression of the main type collagens was analyzed by real-time PCR. The collagen type I/III matrix supported a differentiation that closely resembled the tissue organisation of native cartilage, but cell number and type II collagen synthesis were low and differentiation occurred rather late in the cultivation period. The hyaluronan matrix and the gelatine-based matrix supported a rather rapid differentiation, with a high number of cells and a relatively high amount of type II collagen, but there was no spatial assembly that mimicked native cartilage. These facts indicate that the nature of the matrix is of great influence in the differentiation behaviour of dedifferentiated chondrocytes.
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Document Type: Research Article

Affiliations: Medical University of Vienna, Department of Traumatology, Waehringer Guertel 18-20, A-1090 Vienna, Austria., Email: [email protected]

Publication date: November 1, 2008

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  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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