Author:
Jiang Connie L.,Goyal Yogesh,Jain Naveen,Wang Qiaohong,Truitt Rachel E.,Coté Allison J.,Emert Benjamin,Mellis Ian A.,Kiani Karun,Yang Wenli,Jain Rajan,Raj Arjun
Abstract
Abstract
Background
Cardiac differentiation of human-induced pluripotent stem (hiPS) cells consistently produces a mixed population of cardiomyocytes and non-cardiac cell types, even when using well-characterized protocols. We sought to determine whether different cell types might result from intrinsic differences in hiPS cells prior to the onset of differentiation.
Results
By associating individual differentiated cells that share a common hiPS cell precursor, we tested whether expression variability is predetermined from the hiPS cell state. In a single experiment, cells that shared a progenitor were more transcriptionally similar to each other than to other cells in the differentiated population. However, when the same hiPS cells were differentiated in parallel, we did not observe high transcriptional similarity across differentiations. Additionally, we found that substantial cell death occurs during differentiation in a manner that suggested all cells were equally likely to survive or die, suggesting that there is no intrinsic selection bias for cells descended from particular hiPS cell progenitors. We thus wondered how cells grow spatially during differentiation, so we labeled cells by expression of marker genes and found that cells expressing the same marker tended to occur in patches. Our results suggest that cell type determination across multiple cell types, once initiated, is maintained in a cell-autonomous manner for multiple divisions.
Conclusions
Altogether, our results show that while substantial heterogeneity exists in the initial hiPS cell population, it is not responsible for the variability observed in differentiated outcomes; instead, factors specifying the various cell types likely act during a window that begins shortly after the seeding of hiPS cells for differentiation.
Funder
National Human Genome Research Institute
National Institute of Diabetes and Digestive and Kidney Diseases
National Institute of General Medical Sciences
Burroughs Wellcome Fund
Eunice Kennedy Shriver National Institute of Child Health and Human Development
National Cancer Institute
National Institute of Neurological Disorders and Stroke
National Institutes of Health
U.S. Department of Defense
National Center for Advancing Translational Sciences
Perelman School of Medicine, University of Pennsylvania
Allen Foundation
American Heart Association
Division of Emerging Frontiers in Research and Innovation
Publisher
Springer Science and Business Media LLC
Cited by
10 articles.
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