Cardiac Tissue Regeneration Pathway

The cardiac tissue regeneration pathway encompasses a network of molecular, cellular, and physiological processes that enable the repair or replacement of damaged heart tissue. This pathway is especially active in certain animal models (e.g., zebrafish, neonatal mice) but is limited in adult mammals. It involves the activation and coordination of signaling pathways, transcription factors, growth factors, progenitor cells, and extracellular matrix remodeling to restore functional myocardium after injury. Key components include the Hippo pathway, Neuregulin/ErbB signaling, BMP signaling, FAK pathway, GATA4 and Tbx20 transcription factors, cardiomyocytes, cardiac progenitor cells, fibroblasts, and growth factors such as FGF2, TGFβ, VEGF, HGF, and PDGF. The primary function is to restore lost myocardial mass/function following injury through induction/proliferation of new contractile cells, revascularization, and remodeling/replacement of fibrotic scar with functional myocardium. Understanding/regulating this pathway underpins strategies for treating heart failure/myocardial infarction.

Modulation of signaling pathways (e.g., Hippo, Neuregulin/ErbB, BMP, FAK) to promote cardiomyocyte proliferation, differentiation, and survival. Promotion of angiogenesis and ECM remodeling to restore cardiac function after injury.