Abstract:
:Functional hepatocytes, cardiomyocytes, neurons, and retinal pigment epithelial (RPE) cells derived from human embryonic stem cells (hESCs) or human induced pluripotent stem cells (hiPSCs) could provide a defined and renewable source of human cells relevant for cell replacement therapies, drug discovery, toxicology testing, and disease modeling. In this study, we investigated the differences between the differentiation potentials of three hESC lines, four retrovirally derived hiPSC lines, and one hiPSC line derived with the nonintegrating Sendai virus technology. Four independent protocols were used for hepatocyte, cardiomyocyte, neuronal, and RPE cell differentiation. Overall, cells differentiated from hESCs and hiPSCs showed functional similarities and similar expression of genes characteristic of specific cell types, and differences between individual cell lines were also detected. Reactivation of transgenic OCT4 was detected specifically during RPE differentiation in the retrovirally derived lines, which may have affected the outcome of differentiation with these hiPSCs. One of the hiPSC lines was inferior in all directions, and it failed to produce hepatocytes. Exogenous KLF4 was incompletely silenced in this cell line. No transgene expression was detected in the Sendai virus-derived hiPSC line. These findings highlight the problems related to transgene expression in retrovirally derived hiPSC lines.
journal_name
Stem Cells Transl Medjournal_title
Stem cells translational medicineauthors
Toivonen S,Ojala M,Hyysalo A,Ilmarinen T,Rajala K,Pekkanen-Mattila M,Äänismaa R,Lundin K,Palgi J,Weltner J,Trokovic R,Silvennoinen O,Skottman H,Narkilahti S,Aalto-Setälä K,Otonkoski Tdoi
10.5966/sctm.2012-0047subject
Has Abstractpub_date
2013-02-01 00:00:00pages
83-93issue
2eissn
2157-6564issn
2157-6580pii
sctm.2012-0047journal_volume
2pub_type
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