Nicotinamide Mononucleotide Alleviates Cardiomyopathy Phenotypes Caused by Short-Chain Enoyl-Coa Hydratase 1
Ke Cai1, Feng Wang1, Jia-Quan Lu1
1NHC Key Laboratory of Neonatal Diseases, Cardiovascular Center, Children's Hospital of Fudan University, State Key Laboratory of Genetic Engineering, and School of Life Sciences, Fudan University, Shanghai, China.
Abstract:
Short-chain enoyl-CoA hydratase 1 (ECHS1) deficiency plays a role in cardiomyopathy. Whether ECHS1 deficiency causes or is only associated with cardiomyopathy remains unclear. By using Echs1 heterogeneous knockout (Echs1 +/-) mice, we found that ECHS1 deficiency caused cardiac dysfunction, as evidenced by diffuse myocardial fibrosis and upregulated fibrosis-related genes. Mechanistically, ECHS1 interacts with the p300 nuclear localization sequence, preventing its nuclear translocation in fibroblasts. ECHS1 deficiency promotes p300 nuclear translocation, leading to increased H3K9 acetylation, a known risk factor for cardiomyopathy. Nicotinamide mononucleotide-mediated acetylation targeting suppressed ECHS1 deficiency-induced cardiomyopathy phenotypes in Echs1 +/- mice. Thus, enhancing p300-mediated H3K9ac is a potential interventional approach for preventing ECHS1 deficiency-induced cardiomyopathy.
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