Cardiomyocyte differentiation

Cardiomyocyte differentiation is the biological process by which pluripotent stem cells or multipotent progenitor cells undergo a series of molecular transitions to become functional heart muscle cells. This process is orchestrated by a complex network of signaling pathways, including Wnt, BMP, and Notch, which trigger the expression of core cardiac transcription factors such as NKX2-5 and GATA4 (PMID: 25852317). In drug discovery and regenerative medicine, this process is targeted using small molecules to induce the repair of damaged heart tissue following myocardial infarction or in chronic heart failure (PMC4399701). For instance, the sequential application of the Wnt activator CHIR99021 and the Wnt inhibitor IWP-2 is a standardized protocol for generating cardiomyocytes in vitro (PNAS: 10.1073/pnas.1200250109). While vital for therapeutic development, 'Cardiomyocyte differentiation' is categorized here as an incorrect target name because it represents a multi-step cellular phenomenon rather than a single druggable protein or receptor. The clinical application of induced differentiation faces challenges regarding the functional maturity of the resulting cells and the potential for life-threatening arrhythmias (Nature: 10.1038/nature12744).

Other names

Cardiac differentiationCardiomyogenesisHeart muscle cell maturationCardiac lineage commitment

Temporal modulation of the Wnt/beta-catenin signaling pathway (activation followed by inhibition) and activation of the TGF-beta/BMP superfamily pathways to induce cardiac-specific transcription factors.