Why the study?
Adult mammalian cardiomyocytes have limited proliferative capacity to compensate for cardiomyocyte loss, and the mechanisms by which metabolic changes control cycling genes to promote cardiac regeneration remained unknown.
Does inhibiting fatty acid oxidation via Cpt1b knockout promote cardiomyocyte proliferation and heart regeneration in preclinical models?
Population
Constitutive alphaMHC-Cre or tamoxifen-inducible alphaMHC-MerCreMer Cpt1b knockout mice and cultured neonatal cardiomyocytes
Comparison
Cpt1b knockout or metabolic/epigenetic manipulation vs controls
Design
Preclinical animal and cell-culture study
Key result
Inhibiting fatty acid oxidation via Cpt1b knockout promoted adult cardiomyocyte proliferation and heart regeneration by increasing α-ketoglutarate levels and altering epigenetic modifications.
Authors
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Hypothesis-generating for metabolic modulation of cardiomyocyte proliferation; prospective trials needed before clinical consideration in heart failure.
Does inhibiting fatty acid oxidation via Cpt1b knockout promote cardiomyocyte proliferation and heart regeneration in preclinical models?
Inhibiting fatty acid oxidation via Cpt1b knockout promotes adult cardiomyocyte proliferation and heart regeneration by altering metabolic fluxes and epigenetic modifications, offering a potential therapeutic target for heart failure.
Liu et al. (2023) conducted an editorial in Heart failure. Cpt1b knockout vs. Control was evaluated on Cardiomyocyte proliferation. Inhibiting fatty acid oxidation via Cpt1b knockout promoted adult cardiomyocyte proliferation and heart regeneration by increasing α-ketoglutarate levels and altering epigenetic modifications.
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