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Updated: Aug 5, 2026

Suppression of Pro-fibrotic Signaling Potentiates Factor-mediated Reprogramming of Mouse Embryonic Fibroblasts into Induced Cardiomyocytes
Published on: June 3, 2018
Signaling pathways regulating cardiac regeneration
Jianan Li1, Minjie Hu1, Lu Ding1
1Department of Cell Biology, Institute of Hypoxia Medicine, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China.
Abstract:
Cardiac regeneration represents a pivotal frontier in addressing cardiovascular diseases, the leading global cause of mortality. This review integrates current advancements in understanding the molecular mechanisms driving cardiomyocyte proliferation and myocardial repair. Key signaling pathways-including Hippo/YAP, Wnt/β-catenin, NRG1-ErbB, MAPK, and Notch-orchestrate cardiomyocyte dedifferentiation, cell cycle re-entry, and tissue remodeling. Hippo inhibition promotes cardiomyocyte proliferation and cytoskeletal reorganization, while Wnt/β-catenin exhibits dual roles depending on developmental context and injury phase. NRG1-ErbB and MAPK/ERK pathways integrate metabolic reprogramming and paracrine signaling to enhance regeneration. Transcriptional regulators such as Meis1, GATA4, and Tbx20 modulate cell cycle dynamics, while extracellular matrix components (e.g., Agrin, FSTL1, POSTN) and growth factors (PDGF, FGF, VEGF, Ang-1) reshape the regenerative microenvironment. Despite progress, challenges persist in spatiotemporal control of proliferation, interspecies pathophysiological disparities, and therapeutic delivery precision. Emerging technologies-engineered myocardial grafts, transient modified mRNA systems (e.g., SMRTs), and hypoxia-mediated metabolic switching-highlight translational potential. Future strategies demand integration of multi-omics, biomaterials, and combinatorial interventions to bridge mechanistic insights with clinical applications.
Insights
This review explores cardiac regeneration, focusing on molecular pathways like Hippo/YAP and Wnt/β-catenin that control cardiomyocyte proliferation and repair. Advances in regenerative medicine offer hope for treating heart disease.
Area of Science:
- Cardiovascular Research
- Regenerative Medicine
- Molecular Biology
Background:
- Cardiovascular diseases are the leading cause of death globally.
- Cardiac regeneration is crucial for myocardial repair and addressing heart failure.
- Understanding cardiomyocyte proliferation mechanisms is key to developing new therapies.
Purpose of the Study:
- To review current advancements in cardiac regeneration.
- To integrate knowledge on molecular mechanisms driving cardiomyocyte proliferation and myocardial repair.
- To discuss challenges and emerging technologies in the field.
Main Methods:
- Literature review of molecular mechanisms in cardiac regeneration.
- Analysis of key signaling pathways (Hippo/YAP, Wnt/β-catenin, NRG1-ErbB, MAPK, Notch).
- Examination of transcriptional regulators, extracellular matrix components, and growth factors involved.
Main Results:
- Identified key signaling pathways orchestrating cardiomyocyte dedifferentiation, cell cycle re-entry, and tissue remodeling.
- Highlighted the roles of specific regulators (Meis1, GATA4, Tbx20) and microenvironment factors.
- Noted challenges in controlling proliferation, interspecies differences, and delivery methods.
Conclusions:
- Emerging technologies like engineered grafts and mRNA systems show translational potential.
- Future strategies require integrating multi-omics, biomaterials, and combinatorial approaches.
- Bridging mechanistic insights with clinical applications is essential for advancing cardiac regeneration.
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