Abstract:
:The ability to form teratomas in vivo containing multiple somatic cell types is regarded as functional evidence of pluripotency for human pluripotent stem cells (hPSCs). Since the Teratoma assay is animal dependent, laborious, and only qualitative, the PluriTest and the hPSC ScoreCard assay have been developed as in vitro alternatives. Here we compared normal hPSCs, induced hPSCs (hiPSCs) with reactivated reprogramming transgenes, and human embryonal carcinoma cells (hECs) in these assays. While normal hPSCs gave rise to typical teratomas, the xenografts of the hECs and the hiPSCs with reactivated reprogramming transgenes were largely undifferentiated and malignant. The hPSC ScoreCard assay confirmed the line-specific differentiation propensities in vitro. However, when undifferentiated cells were analyzed by the PluriTest, only hECs were identified as abnormal whereas all other cell lines were indistinguishable and resembled normal hPSCs. Our results indicate that pluripotency assays are best selected on the basis of intended downstream applications.
journal_name
Stem Cell Reportsjournal_title
Stem cell reportsauthors
Bouma MJ,van Iterson M,Janssen B,Mummery CL,Salvatori DCF,Freund Cdoi
10.1016/j.stemcr.2017.03.009subject
Has Abstractpub_date
2017-05-09 00:00:00pages
1340-1353issue
5issn
2213-6711pii
S2213-6711(17)30115-7journal_volume
8pub_type
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