Channeled ECM-Based Nanofibrous Hydrogel for Engineering Vascularized Cardiac Tissues

Area of Science:

• Biomaterials Science
• Cardiovascular Research
• Tissue Engineering

Background:

• Hydrogels are common in cardiac tissue engineering but suffer from poor mass transfer, limiting cell viability in engineered tissues.
• Developing vascularized cardiac tissue is crucial for clinical applications.

Purpose of the Study:

• To develop and evaluate a channeled extracellular matrix (ECM)-based nanofibrous hydrogel for engineering vascularized cardiac tissue.
• To assess the impact of engineered channels on cell viability and the potential for forming a functional cardiac patch.

Main Methods:

• Fabrication of a nanofibrous hydrogel using omentum ECM.
• Patterning the hydrogel to create internal channels.
• Encapsulation of cardiac cells within the hydrogel.
• Seeding endothelial cells into the channels to form lumens.
• Utilizing a mathematical model to analyze mass transfer and cell viability.

Main Results:

• The channeled hydrogel design facilitates vascularization by creating open cellular lumens with endothelial cells.
• Mathematical modeling indicated the necessity of channels for maintaining cell viability within the engineered cardiac tissue.
• The study demonstrated the potential of this vascularized hydrogel for creating a viable cardiac patch.

Conclusions:

• Channeled ECM-based nanofibrous hydrogels represent a promising strategy for overcoming mass transfer limitations in cardiac tissue engineering.
• The developed vascularized hydrogel system enhances cell viability and holds potential for creating functional cardiac patches.