4.6 Review

WNT/β-catenin pathway is a key regulator of cardiac function and energetic metabolism

Journal

ACTA PHYSIOLOGICA
Volume 237, Issue 3, Pages -

Publisher

WILEY
DOI: 10.1111/apha.13912

Keywords

cardiac metabolism; glucose metabolism; lipid metabolism; WNT/beta-catenin signaling; beta-oxidation

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The WNT/beta-catenin pathway plays an important regulatory role in cardiac development and growth. Its activity is low in healthy adult hearts, but even this low activity is essential for maintaining normal heart function. Acute activation of the pathway is considered cardioprotective after infarction, while chronically high activity causes profibrotic and hypertrophic effects in the adult heart.
The WNT/beta-catenin pathway is a master regulator of cardiac development and growth, and its activity is low in healthy adult hearts. However, even this low activity is essential for maintaining normal heart function. Acute activation of the WNT/beta-catenin signaling cascade is considered to be cardioprotective after infarction through the upregulation of prosurvival genes and reprogramming of metabolism. Chronically high WNT/beta-catenin pathway activity causes profibrotic and hypertrophic effects in the adult heart. New data suggest more complex functions of beta-catenin in metabolic maturation of the perinatal heart, establishing an adult pattern of glucose and fatty acid utilization. Additionally, low basal activity of the WNT/beta-catenin cascade maintains oxidative metabolism in the adult heart, and this pathway is reactivated by physiological or pathological stimuli to meet the higher energy needs of the heart. This review summarizes the current state of knowledge of the organization of canonical WNT signaling and its function in cardiogenesis, heart maturation, adult heart function, and remodeling. We also discuss the role of the WNT/beta-catenin pathway in cardiac glucose, lipid metabolism, and mitochondrial physiology.

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