Engineering cardiac tissue from embryonic stem cells.

Restoration of cardiac function by replacement of diseased myocardium with functional cardiac myocytes may offer a potential cure for cardiac disease and will likely revolutionize treatment methods. During the past 20 years, we have seen the development of tissue engineering; among these types of tissue engineering is cardiac tissue engineering. This type of cardiac tissue engineering includes growing neonatal cardiomyocytes on preformed polymers, liquid collagen, and temperature-responsive surfaces. It also includes the application of neonatal rat or chick cardiomyocytes to skeletal myoblasts, mesenchymal stem cells and embryonic stem cells, static culture, and bioreactor and stretching cultivation. Progress has come step-by-step, but, in recent years, with great technological advances, the progress has been accelerating, moving this area of research from dream to reality. The engineered cardiac tissue not only reproduces in vitro, but it can also be shaped so that it will, at some time, be able to form valves or endothelial lining. This chapter describes the currently used protocols for cardiac tissue engineering: liquid collagen-based cardiac tissue engineering and cell sheet-based cardiac tissue engineering, especially cardiac tissue engineering using cardiomyocytes derived from embryonic stem cells.