Establishment and characterization of chondrocyte cell lines from the costal cartilage of SV40 large T antigen transgenic mice
- 1 January 2001
- journal article
- research article
- Published by Wiley in Journal of Cellular Biochemistry
- Vol. 81 (4), 571-582
- https://doi.org/10.1002/jcb.1075
Abstract
Complete understanding of the physiology and pathology of the cartilage is essential to establish treatments for a variety of cartilage disorders and defects such as rheumatoid arthritis, congenital malformations, and tumors of cartilage. Although synthetic materials have been used in many cases, they possess inherent problems including wear of the materials and low mechanical strength. Autograft has been considered very effective to overcome these problems. However, the limitation of the transplant volume is a major problem in autograft to be overcome. The costal cartilage is the most serious candidate for donor site transplantation, since it is the largest permanent hyaline cartilage in the body. To investigate the possibility using the costal cartilage as a transplant source, we have established and characterized three mouse chondrocyte cell lines (MCC‐2, MCC‐5, and MCC‐35) derived from the costal cartilage of 8‐week‐old male SV40 large T‐antigen transgenic mice. At confluence, all the cell lines formed nodules that could be positively stained with alcian blue (pH 2.5). The size of nodules gradually increased during culturing time. After 2 and 6 weeks of culture, RT‐PCR analysis demonstrated that all three cell lines expressed mRNA from the cartilage‐specific genes for type II collagen, type XI collagen, aggrecan, and link protein. Furthermore, type X collagen expression was detected in MCC‐5 and MCC‐35 but not in MCC‐2. Any phenotypic changes were not observed over 31 cell divisions. Immunocytochemistry showed further that MCC‐2, MCC‐5, and MCC‐35 produced cartilage‐specific proteins type II collagen and type XI collagen, while in addition MCC‐5 and MCC‐35 produced type X collagen. Treatment with 1α, 25‐dihydroxyvitamin D3 inhibited cell proliferation and differentiation of the three cell lines in a dose‐dependent manner. These phenotypic characteristics have been found consistent with chondrocyte cell lines established from cartilage tissues other than costal cartilage. In conclusion, costal cartilage shows phenotypic similarities to other cartilages, i.e., articular cartilage and embryonic limbs, suggesting that costal cartilage may be very useful as the donor transplantation site for the treatment of cartilage disorders. Furthermore, the cell lines established in this study are also beneficial in basic research of cartilage physiology and pathology. J. Cell. Biochem. 81: 571–582, 2001.Keywords
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