Title | Circadian clock genes cause activation of the human PAI-1 gene promoter with 4G/5G allelic preference |
---|
Authors | Chong, Nelson W., Codd, V., Chan, D. and Samani, N.J. |
---|
Abstract | Increased plasminogen activator inhibitor-1 (PAI-1) activity is associated with greater risk of myocardial infarction. PAI-1 expression is regulated by a 4G/5G promoter polymorphism. The 4G allele is associated with higher PAI-levels and greater circadian variation. Here we show that clock protein heterodimers BMAL/CLOCK cause greater activation (≈2-fold, P < 0.05) of the 4G allele. Site-directed mutagenesis studies suggest that clock genes act on two canonical E-boxes to regulate PAI-1 promoter activity. These results identify a potential novel mechanism whereby allele-specific clock genes – mediated modulation of PAI-1 expression may contribute to circadian variation in cardiac risk. |
---|
Journal | FEBS Letters |
---|
Journal citation | 580 (18), pp. 4469-4472 |
---|
ISSN | 0014-5793 |
---|
Year | 2006 |
---|
Publisher | Elsevier |
---|
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.febslet.2006.07.014 |
---|
Publication dates |
---|
Published | Aug 2006 |
---|