Dual-Target Cardiac Regeneration: Controllable Nfyb/Nr3c1 Cointervention Spurs Cardiomyocyte Cytokinesis After Myocardial Infarction.

Dual Nfyb activation and Nr3c1 inhibition significantly increase cardiomyocyte proliferation, with 28% forming clustered new cells, over 28-fold compared to controls in mice.

• Why it matters: Effective cardiac regeneration strategies are lacking after myocardial infarction due to barriers like cytokinesis inhibition, which limits adult cardiomyocyte proliferation.
• What they did: The study used transcriptomic analysis, genetic models, and a controlled adeno-associated virus system to overexpress Nfyb and delete Nr3c1, assessing regenerative effects in mice and human tissues.
• The result: The dual intervention synergistically promoted cardiomyocyte proliferation, improved cardiac function, and reduced infarct size, suggesting a promising new approach for cardiac regeneration therapy.