Trends in cardiovascular engineering: organizing the human heart

Area of Science:

• Cardiovascular Biology
• Regenerative Medicine
• Biomedical Engineering

Background:

• Heart growth regulation by cellular, molecular, and mechanical factors is not fully understood.
• Proper heart size and function depend on precise developmental regulation.
• In vitro models are needed to study human cardiac development and disease.

Purpose of the Study:

• To characterize in vitro models of human cardiac development.
• To engineer organized, vascularized, contractile human cardiac tissue.
• To explore potential human cardiac therapeutics.

Main Methods:

• Utilized a tissue engineering approach combining mechanical load and vascular cell co-culture.
• Generated organized human myocardium in vitro.
• Modulated cardiomyocyte alignment, proliferation, and hypertrophy within engineered constructs.

Main Results:

• Successfully generated organized human cardiac tissue in vitro.
• Demonstrated control over cardiomyocyte alignment, proliferation, and hypertrophy.
• Measured contractile function and force-length dependence of the engineered tissue.

Conclusions:

• Developed a functional in vitro model of human cardiac tissue.
• This model allows for the study of cardiac development and mechanical regulation.
• Paves the way for developing novel human cardiac therapeutics.