Versatile human cardiac tissues engineered with perfusable heart extracellular microenvironment for biomedical...

Area of Science:

• Biomedical Engineering
• Stem Cell Biology
• Cardiovascular Research

Background:

• Engineered human cardiac tissues are crucial for drug testing, disease modeling, and regenerative medicine.
• Current human pluripotent stem cell-derived cardiac tissues often lack maturity and functionality, limiting their applications.
• There is a need for advanced culture systems that promote better development and maturation of cardiac tissues.

Purpose of the Study:

• To establish a perfusable culture system that mimics in vivo-like heart microenvironments.
• To enhance the fabrication, development, and maturation of human cardiac tissues.
• To create a versatile platform for various biomedical applications using engineered cardiac tissues.

Main Methods:

• Integration of a microfluidic chip with a 3D heart extracellular matrix.
• Fabrication of macroscale human cardiac tissues using cardiovascular lineage cells derived from human induced pluripotent stem cells (hiPSCs).
• Inclusion of cardiomyocytes, cardiac fibroblasts, and vascular endothelial cells in the engineered tissues.

Main Results:

• The developed culture system significantly improved structural and functional maturation of human cardiac tissues.
• The engineered tissues demonstrated enhanced efficacy in drug testing, including assessment of arrhythmia risk.
• The platform proved effective for disease modeling (Long QT Syndrome, cardiac fibrosis) and regenerative therapy (myocardial infarction).

Conclusions:

• The novel perfusable culture system effectively enhances human cardiac tissue engineering.
• This platform provides a robust solution for generating mature and functional cardiac tissues.
• The system offers a highly effective approach for diverse biomedical applications, including advanced drug screening and regenerative medicine.