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- W2018172813 abstract "Peroxisome proliferator-activated receptors (PPARs) are members of the nuclear receptor family of ligand-activated transcription factors and consist of the three isoforms, PPARα, PPARβ/δ, and PPARγ. Considerable evidence indicates the importance of PPARs in cardiovascular lipid homeostasis and diabetes, yet the isoform-dependent cardiac target genes remain unknown. Here, we constructed murine ventricular clones allowing stable expression of siRNAs to achieve specifically knockdown for each of the PPAR isoforms. By combining gene profiling and computational peroxisome proliferator response element analysis following PPAR isoform activation in normal versus PPAR isoform-deficient cardiomyocyte-like cells, we have, for the first time, determined PPAR isoform-specific endogenous target genes in the heart. Electromobility shift and chromatin immunoprecipitation assays demonstrated the existence of an evolutionary conserved peroxisome proliferator response element consensus-binding site in an insulin-like growth factor-1 (igf-1) enhancer. In line, Wy-14643-mediated PPARα activation in the wild-type mouse heart resulted in up-regulation of igf-1 transcript abundance and provided protection against cardiomyocyte apoptosis following ischemia/reperfusion or biomechanical stress. Taken together, these data confirm igf-1 as an in vivo target of PPARα and the involvement of a PPARα/IGF-1 signaling pathway in the protection of cardiomyocytes under ischemic and hemodynamic loading conditions." @default.
- W2018172813 created "2016-06-24" @default.
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- W2018172813 date "2011-04-01" @default.
- W2018172813 modified "2023-10-07" @default.
- W2018172813 title "Peroxisome Proliferator-activated Receptor (PPAR) Gene Profiling Uncovers Insulin-like Growth Factor-1 as a PPARα Target Gene in Cardioprotection" @default.
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- W2018172813 doi "https://doi.org/10.1074/jbc.m111.220525" @default.
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