Human cardiac organoids for disease modeling and drug discovery.
Publication Year:
2026
PubMed ID:
40914706
Funding Grants:
Public Summary:
Scientists have created "cardiac organoids," which are tiny, self-assembling 3D models of the human heart grown in a lab. Unlike traditional testing methods—like flat cell cultures in a dish or animal models that don't always mimic human biology—these mini-hearts actually replicate the complex structure, multiple cell types, and early growth stages of a real developing human heart. This breakthrough allows researchers to study exactly how the heart forms, how cardiovascular diseases start, and whether new drugs will accidentally damage human heart tissue. As new tools are developed to better analyze the shape and function of these mini-hearts, they are becoming an invaluable tool for safely discovering and testing new heart medications before they ever reach clinical trials.
Scientific Abstract:
Cardiac organoids are 3D self-assembling structures that recapitulate some of the functional, structural, and cellular aspects of the developing heart. Cardiac organoid modeling has overcome many of the limitations of current cardiac modeling systems by providing a human-relevant, multicellular, spatially advanced model that can replicate early key developmental stages of human cardiogenesis. Recent advancements in cardiac organoid modeling have enabled further understanding of cardiogenesis, cardiovascular disease, and drug-induced cardiotoxicity. Emerging tools to effectively characterize cardiac organoid models to understand their morphology, function, and cellular phenotype will enable further understanding of cardiac development, cardiovascular disease, and preclinical drug discovery.