Year: 2025
Type: article
Abstract: Cardiac maturation is crucial for postnatal cardiac development and is increasingly known to be regulated by a series of transcription factors. However, post-translational mechanisms regulating this process remain poorly understood. Here we report the indispensable role of neddylation in cardiac maturation. Mosaic deletion of NAE1, an essential enzyme for neddylation, in neonatal hearts results in the rapid development of cardiomyopathy and heart failure. NAE1 deficiency disrupts transverse tubule formation, inhibits physiological hypertrophy, and represses fetal-to-adult isoform switching, thus culminating in cardiomyocyte immaturation. Mechanistically, we find that neddylation is needed for the perinatal metabolic transition from glycolytic to oxidative metabolism in cardiomyocytes. Further, we show that HIF1α is a putative neddylation target and that inhibition of neddylation accumulates HIF1α and impairs fatty acid utilization and bioenergetics in cardiomyocytes. Together, our data identify neddylation as a pivotal mechanism regulating cardiomyocyte maturation through promoting oxidative metabolism in the developing heart.
Source: Figshare
Authors: Jianqiu Zou, Wenjuan Wang, Yi Lu, Juan Ayala, Kunzhe Dong, Hongyi Zhou, Jinxi Wang, Weiqin Chen, Neal L. Weintraub, Jiliang Zhou, Jie Li, Huabo Su
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: green
Funder: American Heart Association
OpenAlex ID: W6902215703
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