Identification of a promoter element within the zebrafish colX alpha 1 gene responsive to Runx2 isoforms Osf2/Cbfa1 and til-1 but not to pebp2 alpha A2
Simoes, B., Conceicao, N., Viegas, C. S. B., Pinto, J. P., Gavaia, P. J., Hurst, L. D., Kelsh, R. N. and Cancela, M. L., 2006. Identification of a promoter element within the zebrafish colX alpha 1 gene responsive to Runx2 isoforms Osf2/Cbfa1 and til-1 but not to pebp2 alpha A2. Calcified Tissue International, 79 (4), pp. 230-244.
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Type X collagen is a short chain collagen specifically expressed by hypertrophic chondrocytes during endochondral ossification. We report here the functional analysis of the zebrafish (Danio rerio) collagen X alpha 1 gene (colX alpha 1) promoter with the identification of a region responsive to two isoforms of the runt domain transcription factor runx2. Furthermore, we provide evidence for the presence of dual promoter usage in zebrafish, a finding that should be important to further understanding of the regulation of its restricted tissue distribution and spatial-temporal expression during early development. The zebrafish colX alpha 1 gene structure is comparable to that recently identified by comparative genomics in takifugu and shows homology with corresponding mammalian genes, indicating that its general architecture has been maintained throughout vertebrate evolution. Our data suggest that, as in mammals, runx2 plays a role in the development of the osteogenic lineage, supporting zebrafish as a model for studies of bone and cartilage development.
|Creators||Simoes, B., Conceicao, N., Viegas, C. S. B., Pinto, J. P., Gavaia, P. J., Hurst, L. D., Kelsh, R. N. and Cancela, M. L.|
|Departments||Faculty of Science > Biology & Biochemistry|
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