Evidence map›Paper›PMID 28362803›Full record

ArticlePloS one2017

PCR artifact in testing for homologous recombination in genomic editing in zebrafish.

Minho Won, Igor B Dawid

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.8field-weighted citation impact, top 14% 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

17 citing papers in PubMed, 34 citations in OpenAlex.

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  3. Transgene Mapping in Animals: What to Choose?International journal of molecular sciences · 2025
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  10. Targeted DNA insertion in plants.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Review
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  16. Article
  17. Zoological research · 2018
    Review
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

2 authors at 2 institutions in 2 countries.

Minho WonSection on Developmental Biology, DDB, National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, United States of America.
Igor B DawidSection on Developmental Biology, DDB, National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, United States of America.ORCID http://orcid.org/0000-0003-0579-5693
Chungnam National University · KREunice Kennedy Shriver National Institute of Child Health and Human Development · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We report a PCR-induced artifact in testing for homologous recombination in zebrafish. We attempted to replace the lnx2a gene with a donor cassette, mediated by a TALEN induced double stranded cut. The donor construct was flanked with homology arms of about 1 kb at the 5' and 3' ends. Injected embryos (G0) were raised and outcrossed to wild type fish. A fraction of the progeny appeared to have undergone the desired homologous recombination, as tested by PCR using primer pairs extending from genomic DNA outside the homology region to a site within the donor cassette. However, Southern blots revealed that no recombination had taken place. We conclude that recombination happened during PCR in vitro between the donor integrated elsewhere in the genome and the lnx2a locus. We conclude that PCR alone may be insufficient to verify homologous recombination in genome editing experiments in zebrafish.

Indexed as

AnimalsArtifactsBlotting, SouthernGene EditingHomologous RecombinationPolymerase Chain ReactionZebrafish

Identifiers

PMID28362803
PMCPMC5375128
OpenAlexW2951315908

What OpenQuestion holds

Textmetadata
LicenceCC0
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.