Temporal mechanisms of myogenic specification in human induced pluripotent stem cells.

TitleTemporal mechanisms of myogenic specification in human induced pluripotent stem cells.
Publication TypeJournal Article
Year of Publication2021
AuthorsP Nayak, A Colas, M Mercola, S Varghese, and S Subramaniam
JournalScience Advances
Volume7
Issue12
Date Published03/2021
Abstract

Understanding the mechanisms of myogenesis in human induced pluripotent stem cells (hiPSCs) is a prerequisite to achieving patient-specific therapy for diseases of skeletal muscle. hiPSCs of different origin show distinctive kinetics and ability to differentiate into myocytes. To address the unique cellular and temporal context of hiPSC differentiation, we perform a longitudinal comparison of the transcriptomic profiles of three hiPSC lines that display differential myogenic specification, one robust and two blunted. We detail temporal differences in mechanisms that lead to robust myogenic specification. We show gene expression signatures of putative cell subpopulations and extracellular matrix components that may support myogenesis. Furthermore, we show that targeted knockdown of ZIC3 at the outset of differentiation leads to improved myogenic specification in blunted hiPSC lines. Our study suggests that β-catenin transcriptional cofactors mediate cross-talk between multiple cellular processes and exogenous cues to facilitate specification of hiPSCs to mesoderm lineage, leading to robust myogenesis.

DOI10.1126/sciadv.abf7412
Short TitleScience Advances