Abstract
Chondrocyte- or chondrosarcoma cell line (HCS)-specific DNA fragments were obtained using differential display-PCR. Nucleotide sequences of 32 species derived from HCS cells were determined. One of the sequence tags (tag no. 24) corresponded to the nucleotide sequence of connective tissue growth factor (CTGF). Northern blot analysis showed that CTGF was highly expressed in HCS cells and rabbit growth cartilage cells in culture but was not expressed in osteoblastic cells in culture. In situ hybridization revealed that CTGF was expressed only in the hypertrophic chondrocytes of costal cartilage and the vertebral column in embryonic mice. The expression of CTGF in HCS cells was up-regulated by the addition of TGF-beta or BMP-2. These findings suggest that CTGF participates in endochondral ossification.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Blotting, Northern
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Bone Morphogenetic Protein 2
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Bone Morphogenetic Proteins / pharmacology
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Cartilage / cytology
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Cartilage / metabolism*
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Cells, Cultured
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Cloning, Molecular
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Connective Tissue Growth Factor
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DNA Primers
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Gene Expression Regulation
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Growth Substances / genetics*
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Growth Substances / isolation & purification
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Humans
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Immediate-Early Proteins*
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In Situ Hybridization
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Intercellular Signaling Peptides and Proteins*
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Mice
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Polymerase Chain Reaction
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RNA, Messenger / metabolism
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Rabbits
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Sequence Homology, Nucleic Acid
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Transforming Growth Factor beta / pharmacology
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Tumor Cells, Cultured
Substances
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BMP2 protein, human
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Bmp2 protein, mouse
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Bone Morphogenetic Protein 2
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Bone Morphogenetic Proteins
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CCN2 protein, human
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CCN2 protein, mouse
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DNA Primers
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Growth Substances
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Immediate-Early Proteins
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Intercellular Signaling Peptides and Proteins
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RNA, Messenger
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Transforming Growth Factor beta
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Connective Tissue Growth Factor