Evidence map›Paper›PMID 33407863›Full record

ArticleBMC research notes2021

Comparison of the effects of introducing the CRISPR/Cas9 system by microinjection and electroporation into porcine embryos at different stages.

Quynh Anh Le, Fuminori Tanihara, Manita Wittayarat, Zhao Namula, Yoko Sato, Qingyi Lin, Koki Takebayashi, Maki Hirata, Takeshige Otoi

Open access · goldAbstract readComparative Study
In one paragraph

Article in BMC research notes, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.4field-weighted citation impact, top 4% 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

25 citing papers in PubMed, 62 citations in OpenAlex.

  1. Article
  2. Review
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  4. Article
  5. CRISPR-Cas9 in the Tailoring of Genetically Engineered Animals.Current issues in molecular biology · 2025
    Review
  6. Article
  7. Article
  8. Article
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  11. Review
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  17. Application of the transgenic pig model in biomedical research: A review.Frontiers in cell and developmental biology · 2022
    Review
  18. Review
  19. Review
  20. Article
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

9 authors at 4 institutions in 3 countries.

Quynh Anh LeLaboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan.
Fuminori TaniharaLaboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan. tanihara@tokushima-u.ac.jp.ORCID http://orcid.org/0000-0002-2158-5808
Manita WittayaratFaculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand.
Zhao NamulaLaboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan.
Yoko SatoSchool of Biological Science, Tokai University, Sapporo, Japan.
Qingyi LinLaboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan.
Koki TakebayashiLaboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan.
Maki HirataLaboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan.
Takeshige OtoiLaboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan.
Tokushima University · JPGuangdong Ocean University · CNPrince of Songkla University · THTokai University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveCytoplasmic microinjection and electroporation of the CRISPR/Cas9 system into zygotes are used for generating genetically modified pigs. However, these methods create mosaic mutations in embryos. In this study, we evaluated whether the gene editing method and embryonic stage for gene editing affect the gene editing efficiency of porcine embryos.

resultsFirst, we designed five guide RNAs (gRNAs) targeting the B4GALNT2 gene and evaluated mutation efficiency by introducing each gRNA with Cas9 protein into zygotes by electroporation. Next, the optimized gRNA with Cas9 protein was introduced into 1-cell and 2-cell stage embryos by either microinjection or electroporation. The sequence of gRNA affected the bi-allelic mutation rate and mutation efficiency of blastocysts derived from electroporated embryos. Microinjection significantly decreased the cleavage rates in each embryonic stage and blastocyst formation rates in 2-cell stage embryos compared with electroporation (p < 0.05). However, the bi-allelic mutation rate and mutation efficiency of blastocysts from the 1-cell stage embryos edited using microinjection were significantly higher (p < 0.05) than those of blastocysts from the 2-cell stage embryos edited by both methods. These results indicate that the gene editing method and embryonic stage for gene editing may affect the genotype and mutation efficiency of the resulting embryos.

Indexed as

Clustered Regularly Interspaced Short Palindromic RepeatsCRISPR-Cas SystemsAnimalsCRISPR-Associated Protein 9ElectroporationMicroinjectionsSwineCRISPR-Associated Protein 9B4GALNT2ElectroporationMicroinjectionPigXenotransplantation

Identifiers

PMID33407863
PMCPMC7788904
OpenAlexW3120612032

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.