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Updated: Jun 23, 2026
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Fabrication of Myogenic Engineered Tissue Constructs
Published on: May 1, 2009
Fabrication of myogenic engineered tissue constructs
Christina A Pacak1, Douglas B Cowan
1Department of Anesthesiology, Children's Hospital Boston, Harvard Medical School, USA.
Journal of Visualized Experiments : Jove
|May 5, 2009
Summary
This study explores a novel biological pacemaker alternative for children, using a collagen-based hydrogel with cells to conduct electrical signals. This innovative approach aims to improve quality of life and reduce surgeries for pediatric cardiac patients.
Area of Science:
- Biomedical Engineering
- Regenerative Medicine
- Pediatric Cardiology
Background:
- Electronic pacemakers face challenges in pediatric patients due to growth and size limitations.
- A need exists for innovative therapies for pediatric cardiac rhythm disorders.
- Biological alternatives could offer better adaptation to growth and reduce revision surgeries.
Purpose of the Study:
- To develop a conductive biological alternative for pediatric cardiac rhythm disorders.
- To create a surgically-implantable tissue construct for electrical conduction.
- To restore atrioventricular electrical conduction in children with complete heart block.
Main Methods:
- Incorporating primary skeletal myoblast cell cultures within a collagen-based hydrogel matrix.
- Isolating myoblasts from neonatal Lewis rats and culturing them.
- Mixing cells with collagen, Matrigel, and antibiotics to form a moldable solution.
- Utilizing type 1 collagen from fetal lamb skin for tissue constructs.
Main Results:
- A viscous, uniform solution was created, castable into various shapes.
- Solidified tissue constructs were formed and allowed to condense.
- The engineered tissue is ready for in vitro assessment or surgical implantation.
Conclusions:
- A collagen-based hydrogel matrix with autologous cells shows promise as a biological pacemaker alternative.
- This approach could potentially adapt to pediatric growth, reducing the need for repeat surgeries.
- The engineered tissue construct serves as an electrical conduit, aiming to restore heart function.
