# Unveiling new horizons in heart research: the promise of multi-chamber cardiac organoids

## TL;DR

Scientists created mini human hearts in the lab that mimic real heart development, offering new ways to study heart diseases and test treatments.

## Contribution

The novel contribution is the generation of multi-chamber cardiac organoids from human pluripotent stem cells that closely resemble embryonic heart complexity.

## Key findings

- The cardioids replicate human embryonic heart tissue architecture and cellular diversity.
- They serve as a valuable in vitro model for studying heart development and disease.
- The organoids offer potential for precision and regenerative medicine applications.

## Abstract

Human cardiac and other organoids have recently emerged as a groundbreaking tool for advancing our understanding the developmental biology of human organs. A recent paper from Sasha Mendjan’s laboratory published in the journal Cell on December 7, 2023, reported the generation of multi-chamber cardioids from human pluripotent stem cells, a transformative technology in the field of cardiology. In this short highlight paper, we summarize their findings. Their cardioids remarkably recapitulate the complexity of the human embryonic heart, including tissue architecture, cellular diversity, and functionality providing an excellent in vitro model for investigation of human heart development, disease modeling, precision medicine, and regenerative medicine. Thus, generating cardioids is an important step forward for understanding human heart development and developing potential therapies for heart diseases.