Evidence map›Paper›PMID 23752310›Full record

ArticleMolecular therapy : the journal of the American Society of Gene Therapy2013

Kinetics and epigenetics of retroviral silencing in mouse embryonic stem cells defined by deletion of the D4Z4 element.

Sylvie Rival-Gervier, Mandy Ym Lo, Shahryar Khattak, Peter Pasceri, Matthew C Lorincz, James Ellis

Open access · hybridAbstract read
In one paragraph

Article in Molecular therapy : the journal of the American Society of Gene Therapy, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

16 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
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  6. Article
  7. Molecular Therapies for Muscular Dystrophies.Current treatment options in neurology · 2018
    Review
  8. Article
  9. Article
  10. Article
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  12. Wnt/β-catenin signaling promotes self-renewal and inhibits the primed state transition in naïve human embryonic stem cells.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  13. Review
  14. Review
  15. Article
  16. Toward position-independent retroviral vector expression in pluripotent stem cells.Molecular therapy : the journal of the American Society of Gene Therapy · 2013
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Sylvie Rival-GervierDevelopmental and Stem Cell Biology, Hospital for Sick Children, Toronto, Ontario, Canada.
Mandy Ym Lo
Shahryar Khattak
Peter Pasceri
Matthew C Lorincz
James Ellis
Hospital for Sick Children · CAUniversity of British Columbia · CA

Funding

Canadian Institutes of Health Research IG1-102956Canadian Institutes of Health Research MOP-111065Canadian Institutes of Health Research RMF-92090
6 · The paper itself

Abstract

Retroviral vectors are silenced in embryonic stem (ES) cells by epigenetic mechanisms whose kinetics are poorly understood. We show here that a 3'D4Z4 insulator directs retroviral expression with persistent but variable expression for up to 5 months. Combining an internal 3'D4Z4 with HS4 insulators in the long terminal repeats (LTRs) shows that these elements cooperate, and defines the first retroviral vector that fully escapes long-term silencing. Using FLP recombinase to induce deletion of 3'D4Z4 from the provirus in ES cell clones, we established retroviral silencing at many but not all integration sites. This finding shows that 3'D4Z4 does not target retrovirus integration into favorable epigenomic domains but rather protects the transgene from silencing. Chromatin analyses demonstrate that 3'D4Z4 blocks the spread of heterochromatin marks including DNA methylation and repressive histone modifications such as H3K9 methylation. In addition, our deletion system reveals three distinct kinetic classes of silencing (rapid, gradual or not silenced), in which multiple epigenetic pathways participate in silencing at different integration sites. We conclude that vectors with both 3'D4Z4 and HS4 insulator elements fully block silencing, and may have unprecedented utility for gene transfer applications that require long-term gene expression in pluripotent stem (PS) cells.

Indexed as

Epigenesis, GeneticGene SilencingInsulator ElementsSequence DeletionAnimalsChromatinDNA MethylationEmbryonic Stem CellsGene Expression RegulationGene OrderGenetic VectorsHistonesHomologous RecombinationKineticsMethylationMiceChromatinHistones

Identifiers

PMID23752310
PMCPMC3734652
OpenAlexW2050229128

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.