Summary
Differentiation of human embryonic stem cells (hESCs) into cardiomyocytes in culture
may offer unique opportunities for modeling genetic disorders, screening potentially
cardiotoxic pharmaceutical agents or replacing cells of the diseased heart. However,
before clinical utility can be realized, numerous hurdles must be overcome. Comprehensive
molecular and phenotypic characterization is required but has so far been restricted
to cardiomyocytes derived from a limited subset of hESC lines. Thus, we have initiated
analysis of cardiomyocyte differentiation and function from a further two independently
derived lines, BG01 and HUES-7. The challenge of improving cardiac cell induction,
enrichment and maturation must also be addressed to meet the demands of high throughput
pharmaceutical screening or to provide sufficient cells to repair an infarcted heart.
Transplanted cells must functionally integrate without inducing arrhythmias, while
survival and evasion of immune surveillance must be accomplished without tumorigenicity.
This review evaluates the opportunities presented by hESC-derived cardiomyocytes and
the progress towards surmounting the challenges of clinical translation.
Keywords
Human embryonic stem cells (hESC) - characterization - cardiomyocytes - differentiation
- clinical translation