Evidence map›Paper›PMID 22760542›Full record

ArticleMolecular therapy : the journal of the American Society of Gene Therapy2012

Valproic acid confers functional pluripotency to human amniotic fluid stem cells in a transgene-free approach.

Dafni Moschidou, Sayandip Mukherjee, Michael P Blundell, Katharina Drews, Gemma N Jones, Hassan Abdulrazzak, Beata Nowakowska, Anju Phoolchund, Kenneth Lay, T Selvee Ramasamy and 13 more

Expression of concernOpen access · hybridAbstract read
In one paragraph

Article in Molecular therapy : the journal of the American Society of Gene Therapy, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It carries an expression of concern. Cited by 77 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
77citing papers in PubMed, 1 pooled it
8.6field-weighted citation impact, top 1% of its field
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

77 citing papers in PubMed, 1 synthesis or guideline pooled it, 152 citations in OpenAlex.

  1. Pluripotent stem cells: induction and self-renewal.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2018
    Pooled it
  2. Trial
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  10. Article
  11. Amniotic Fluid Stem Cells: What They Are and What They Can Become.Current stem cell research & therapy · 2023
    Article
  12. Amniotic fluid characteristics and its application in stem cell therapy: A review.International journal of reproductive biomedicine · 2022
    Review
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Article
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17 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

23 authors at 8 institutions in 5 countries.

Dafni MoschidouImperial College London, London, UK.
Sayandip Mukherjee
Michael P Blundell
Katharina Drews
Gemma N Jones
Hassan Abdulrazzak
Beata Nowakowska
Anju Phoolchund
Kenneth Lay
T Selvee Ramasamy
Mara Cananzi
Daniel Nettersheim
Mark Sullivan
Jennifer Frost
Gudrun Moore
Joris R Vermeesch
Nicholas M Fisk
Adrian J Thrasher
Anthony Atala
James Adjaye
Hubert Schorle
Paolo De Coppi
Pascale V Guillot
Imperial College London · GBUniversity College London · GBKU Leuven · BEUniversity of Bonn · DEForest Institute · USHeinrich Heine University Düsseldorf · DEMax Planck Institute for Molecular Genetics · DEUniversity of Queensland · AU

Funding

Wellcome Trust 090233
6 · The paper itself

Abstract

Induced pluripotent stem cells (iPSCs) with potential for therapeutic applications can be derived from somatic cells via ectopic expression of a set of limited and defined transcription factors. However, due to risks of random integration of the reprogramming transgenes into the host genome, the low efficiency of the process, and the potential risk of virally induced tumorigenicity, alternative methods have been developed to generate pluripotent cells using nonintegrating systems, albeit with limited success. Here, we show that c-KIT+ human first-trimester amniotic fluid stem cells (AFSCs) can be fully reprogrammed to pluripotency without ectopic factors, by culture on Matrigel in human embryonic stem cell (hESC) medium supplemented with the histone deacetylase inhibitor (HDACi) valproic acid (VPA). The cells share 82% transcriptome identity with hESCs and are capable of forming embryoid bodies (EBs) in vitro and teratomas in vivo. After long-term expansion, they maintain genetic stability, protein level expression of key pluripotency factors, high cell-division kinetics, telomerase activity, repression of X-inactivation, and capacity to differentiate into lineages of the three germ layers, such as definitive endoderm, hepatocytes, bone, fat, cartilage, neurons, and oligodendrocytes. We conclude that AFSC can be utilized for cell banking of patient-specific pluripotent cells for potential applications in allogeneic cellular replacement therapies, pharmaceutical screening, and disease modeling.

Indexed as

Amniotic FluidCell DifferentiationCell LineDNA-Binding ProteinsFemaleGenome, HumanHistone Deacetylase InhibitorsHomeodomain ProteinsHumansInduced Pluripotent Stem CellsKaryotypingKineticsKruppel-Like Factor 4Kruppel-Like Transcription FactorsMaleNanog Homeobox ProteinDNA-Binding ProteinsHistone Deacetylase InhibitorsHomeodomain ProteinsKruppel-Like Factor 4Kruppel-Like Transcription FactorsMYCBP protein, humanNanog Homeobox ProteinNANOG protein, humanOctamer Transcription Factor-3POU5F1 protein, humanSOX2 protein, humanSOXB1 Transcription FactorsTranscription FactorsValproic Acid

Identifiers

PMID22760542
PMCPMC3464631
OpenAlexW2129572589

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.