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Maintenance of cardiac energy metabolism by histone deacetylase 3 in mice
Rusty L. Montgomery, … , Rhonda Bassel-Duby, Eric N. Olson
Rusty L. Montgomery, … , Rhonda Bassel-Duby, Eric N. Olson
Published October 1, 2008
Citation Information: J Clin Invest. 2008;118(11):3588-3597. https://doi.org/10.1172/JCI35847.
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Research Article Article has an altmetric score of 16

Maintenance of cardiac energy metabolism by histone deacetylase 3 in mice

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Abstract

Histone deacetylase (HDAC) inhibitors show remarkable therapeutic potential for a variety of disorders, including cancer, neurological disease, and cardiac hypertrophy. However, the specific HDAC isoforms that mediate their actions are unclear, as are the physiological and pathological functions of individual HDACs in vivo. To explore the role of Hdac3 in the heart, we generated mice with a conditional Hdac3 null allele. Although global deletion of Hdac3 resulted in lethality by E9.5, mice with a cardiac-specific deletion of Hdac3 survived until 3–4 months of age. At this time, they showed massive cardiac hypertrophy and upregulation of genes associated with fatty acid uptake, fatty acid oxidation, and electron transport/oxidative phosphorylation accompanied by fatty acid–induced myocardial lipid accumulation and elevated triglyceride levels. These abnormalities in cardiac metabolism can be attributed to excessive activity of the nuclear receptor PPARα. The phenotype associated with cardiac-specific Hdac3 gene deletion differs from that of all other Hdac gene mutations. These findings reveal a unique role for Hdac3 in maintenance of cardiac function and regulation of myocardial energy metabolism.

Authors

Rusty L. Montgomery, Matthew J. Potthoff, Michael Haberland, Xiaoxia Qi, Satoshi Matsuzaki, Kenneth M. Humphries, James A. Richardson, Rhonda Bassel-Duby, Eric N. Olson

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