Glycosaminoglycan/chitosan hydrogel for matrix-associated autologous chondrocyte implantation: An in vitro study

Fang Yu Fan, Chien Chang Chiu, Ching Li Tseng, Hsuan Shu Lee, Yung Ning Pan, Kai Chiang Yang

研究成果: 雜誌貢獻文章

7 引文 斯高帕斯(Scopus)

摘要

Matrix-associated autologous chondrocyte implantation (MACI) is an effective treatment for full-thickness cartilage and osteochondral lesions with encouraging outcomes. However, problems include abnormal growth of chondrocytes during cultivation, cell dedifferentiation, and abnormally regenerated cartilage. A matrix that provides a physicochemical and biological microenvironment for restoring hypertrophic chondrocytes would be beneficial for MACI. Accordingly, this study evaluates the feasibility of using an injectable glycosaminoglycan (GAG)/chitosan hydrogel for MACI. Chitosan gel was prepared and GAGs (hyaluronan and chondroitin-6-sulfate) were added to fabricate a GAG/chitosan matrix. Porcine chondrocytes were isolated from articular cartilage and encapsulated within the GAG/chitosan matrix. Cell viability, material-mediated cytotoxicity, cellular proliferation, collagen production, GAG content, and mRNA gene expression patterns of the chondrocytes were evaluated. The cell viability and material-mediated cytotoxicity assay results show that the GAG/chitosan hydrogel has good biocompatibility. Chondrocytes cultured within the matrix had a slower proliferation but higher GAG production compared to those obtained for a monolayer culture. Real-time polymerase chain reaction results show that the mRNA expression of type II collagen was up-regulated but types I and X collagens were down-regulated. This study demonstrates that incorporating GAGs into a chitosan matrix maintains the normal phenotype of chondrocytes, making the GAG/chitosan matrix a candidate for MACI.
原文英語
頁(從 - 到)211-217
頁數7
期刊Journal of Medical and Biological Engineering
34
發行號3
DOIs
出版狀態已發佈 - 2014

ASJC Scopus subject areas

  • Biomedical Engineering
  • Medicine(all)

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