Evidence map›Paper›PMID 28494940›Full record

ArticleStem cell reports2017

Differentiation-Defective Human Induced Pluripotent Stem Cells Reveal Strengths and Limitations of the Teratoma Assay and In Vitro Pluripotency Assays.

Marga J Bouma, Maarten van Iterson, Bart Janssen, Christine L Mummery, Daniela C F Salvatori, Christian Freund

Abstract read
In one paragraph

Article in Stem cell reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Marga J BoumaDepartment of Anatomy & Embryology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, the Netherlands.
Maarten van ItersonDepartment of Molecular Epidemiology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, the Netherlands.
Bart JanssenGenomeScan B.V., Plesmanlaan 1D, 2333 BZ Leiden, the Netherlands.
Christine L MummeryDepartment of Anatomy & Embryology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, the Netherlands.
Daniela C F SalvatoriCentral Laboratory Animal Facility, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, the Netherlands. Electronic address: d.c.f.salvatori@lumc.nl.
Christian FreundDepartment of Anatomy & Embryology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, the Netherlands. Electronic address: c.m.a.h.freund@lumc.nl.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

Cell DifferentiationAnimalsCarcinogenicity TestsCell LineHumansInduced Pluripotent Stem CellsMaleMiceMice, Inbred NODMice, SCIDTeratomaXenograft Model Antitumor Assaysdifferentiation-defectivehPSC ScoreCardhuman pluripotent stem cellmalignancypluripotency assayPluriTestteratomaTeratoScoretumorigenicity

Identifiers

PMID28494940
PMCPMC5425621

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.