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Comparative Study
. 2007 May;5(5):345-56.
doi: 10.1016/j.cmet.2007.03.007.

Genome-wide orchestration of cardiac functions by the orphan nuclear receptors ERRalpha and gamma

Catherine R Dufour  1 , Brian J Wilson, Janice M Huss, Daniel P Kelly, William A Alaynick, Michael Downes, Ronald M Evans, Mathieu Blanchette, Vincent Giguère
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Free article
Comparative Study

Genome-wide orchestration of cardiac functions by the orphan nuclear receptors ERRalpha and gamma

Catherine R Dufour et al. Cell Metab. 2007 May.
Free article

Abstract

Orphan nuclear receptor ERRalpha (NR3B1) is recognized as a key regulator of mitochondrial biogenesis, but it is not known whether ERRalpha and other ERR isoforms play a broader role in cardiac energetics and function. We used genome-wide location analysis and expression profiling to appraise the role of ERRalpha and gamma (NR3B3) in the adult heart. Our data indicate that the two receptors, acting as nonobligatory heterodimers, target a common set of promoters involved in the uptake of energy substrates, production and transport of ATP across the mitochondrial membranes, and intracellular fuel sensing, as well as Ca(2+) handling and contractile work. Motif-finding algorithms assisted by functional studies indicated that ERR target promoters are enriched for NRF-1, CREB, and STAT3 binding sites. Our study thus reveals that the ERRs orchestrate a comprehensive cardiac transcriptional program and further suggests that modulation of ERR activities could be used to manage cardiomyopathies.

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