Effect of cardiomyocyte-specific deletion of glucocorticoid receptor on gene expression of the cardiac tissue during early postnatal development

To investigate the role of the glucocorticoid receptor (GR) in the regulation of cardiomyocyte maturation and proliferation, we established a cardiomyocyte-specific GR knock-out (GR-cKO) mouse model by Cre-Lox technology. We thus performed gene expression profiling analysis using data obtained from RNA-seq of the cardiac tissue of GR-cKO and control mouse models extracted during the early postnatal development. Our analyses unveiled a role for GR in regulating gene networks related to the energetic metabolism, which in turn may impact on cardiomyocyte proliferative and regenerative ability. Comparative gene expression profiling analysis of RNA-seq data of cardiac tissue lysates from GR-cKO and control mouse models at postnatal-day-7 (P7).