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

The human MYOD1 transgene is suppressed by 5-bromodeoxyuridine in mouse myoblasts.

5-Bromodeoxyuridine (BrdU) immediately and clearly suppresses expression of the mouse Myod1 and human MYOD1 genes in myoblastic cells. Despite various studies, its molecular mechanism remains unknown. We failed to identify a BrdU-responsive element of the genes in experiments in which reporter constructs containing known regulatory sequences were transferred to mouse C2C12 myoblasts. Therefore, we transferred human chromosome 11 containing the MYOD1 gene to the cells by microcell-mediated chromosome transfer. In the resulting microcell hybrids, BrdU suppressed expression of the transgene, as determined by quantitative real-time RT-PCR analysis. We then transfected human PAC clones containing the MYOD1 gene to the cells. In the resulting transfectants, BrdU suppressed the transgene similarly. Deletion analysis suggested that a BrdU-responsive element or chromatin structure exists between 24 and 47 kb upstream of the gene. These results are the first demonstrating BrdU-responsiveness of a transgene for the known BrdU-responsive genes and facilitating determination of its precise responsible structure.[1]


  1. The human MYOD1 transgene is suppressed by 5-bromodeoxyuridine in mouse myoblasts. Ogino, H., Satou, W., Fujii, M., Suzuki, T., He, Y., Michishita, E., Ayusawa, D. J. Biochem. (2002) [Pubmed]
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