3 years ago

Making human cardiomyocytes up to date: Derivation, maturation state and perspectives

In vitro generation of cardiomyocytes (CMs) from human cells opens the possibility to develop patient-specific therapies to various cardiomyopathies. By establishing the in vitro reprograming methods that produce human CMs, we learn about what is involved in the development of specific CM subtypes. In this review, we summarize the latest achievements in CM generation technologies, emphasizing the differentiation methods of specific CM subtypes. We also relate the biological properties and functions of the in vitro-generated CMs to those of their in vivo counterparts. Furthermore, we describe the main problem of current CM derivation methods – maturation of CMs. We subsequently discuss biochemical and physical stimuli that are used to overcome the maturation problems of in vitro-derived CMs. As a result, a more holistic approach with controllable environment and timing of specific stimuli for creation of more mature engineered heart tissues is described as well. Finally, we propose a novel approach in which enhancing energy transfer mechanisms in the immature CMs might help to overcome the current hurdle of incomplete in vitro differentiation.

Publisher URL: www.sciencedirect.com/science

DOI: S0167527317300517

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