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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Expression of cartilage-specific functional matrix chondromodulin-I mRNA in rabbit growth plate chondrocytes and its responsiveness to growth stimuli in vitro.

Cartilage-specific functional matrix chondromodulin-I (ChM-I) is a 25 kDa glycoprotein purified from fetal bovine epiphyseal cartilage which stimulates the growth of rabbit chondrocytes and the colony formation of the cells in agarose. In the present study, we isolated rabbit ChM-I precursor CDNA by reverse transcription-polymerase chain reactions. Northern blot analysis revealed that the expression of ChM-I mRNA occurred in a tissue-specific manner in cartilage. Moreover, the ChM-I mRNA level was markedly changed in response to growth and differentiation stimuli in primary cultured chondrocytes. Among others, fibroblast growth factor-2, transforming growth factor-beta, and parathyroid hormone related peptide each markedly down-regulated the expression of ChM-I mRNA in chondrocytes. These results indicated that the expression ChM-I was placed under the dynamic control of local growth and differentiation factors.[1]


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