Dilated cardiomyopathy (DCM) is a progressive heart disease characterized by left ventricular dilation and contractile dysfunction. Although many candidate genes have been identified with mouse models, few of them have been shown to be associated with DCM in humans. Germline depletion of Ncoa6, a nuclear hormone receptor coactivator, leads to embryonic lethality and heart defects. However, it is unclear whether Ncoa6 mutations cause heart diseases in adults. Here, we report that two independent mouse models of NCOA6 dysfunction develop severe DCM with impaired mitochondrial function and reduced activity of peroxisome proliferator-activated receptor δ (PPARδ), an NCOA6 target critical for normal heart function. Sequencing of NCOA6-coding regions revealed three independent nonsynonymous mutations present in 5 of 50 (10%) patients with idiopathic DCM (iDCM). These data suggest that malfunction of NCOA6 can cause DCM in humans.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation (NRF) funded by the Ministry of Education, Science and Technology of the Korean government (2009-0081177, 2010-0020878, and 2012R1A1A2009607); the Bio-industry Technology Development Program, MAFRA (311054232-HD1102), Korea; a Korean Healthcare Technology R&D Project from the Ministry of Health and Welfare (A085136); a grant (14182MFDS978) from the Korean Ministry of Food and Drug Safety in 2014; by the Canadian Institutes of Health Research (CIHR; MOP-125933); and the Canada and NRF of Korea (GRN-2013S1A2A2035348). C.C. is a Chercheur-Boursier Junior of Fonds de recherché du Québec-Santé and CIHR New Investigator awardee, and J.W.L. is supported by the NIH (DK064678).
All Science Journal Classification (ASJC) codes
- Biochemistry, Genetics and Molecular Biology(all)