Evidence map›Paper›PMID 33396657›Full record

ArticleGenes2020

Production of Recombinant Monoclonal Antibodies in the Egg White of Gene-Targeted Transgenic Chickens.

Takehiro Mukae, Sho Okumura, Takuma Watanobe, Kyoko Yoshii, Takahiro Tagami, Isao Oishi

Open access · goldAbstract read
In one paragraph

Article in Genes, 2020. 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
3.6field-weighted citation impact, top 7% 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, 41 citations in OpenAlex.

  1. Review
  2. Article
  3. Manipulating primordial germ cells from chicken and other bird species.The Journal of reproduction and development · 2026
    Review
  4. Chicken Primordial Germ Cell Surface Marker.Animals : an open access journal from MDPI · 2025
    Article
  5. CRISPR-Cas9 in the Tailoring of Genetically Engineered Animals.Current issues in molecular biology · 2025
    Review
  6. Article
  7. Review
  8. Frontiers in immunology · 2025
    Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. 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

6 authors at 3 institutions in 1 country.

Takehiro MukaeBiomedical Research Institute, National Institute of Advanced Industrial Science and Technology, 1-8-31, Ikeda, Osaka 563-8577, Japan.
Sho OkumuraSapporo Division, Cosmo Bio Co. Ltd., 3-513-2, Zenibako, Otaru, Hokkaido 047-0261, Japan.ORCID 0000-0002-2569-3566
Takuma WatanobeSapporo Division, Cosmo Bio Co. Ltd., 3-513-2, Zenibako, Otaru, Hokkaido 047-0261, Japan.
Kyoko YoshiiBiomedical Research Institute, National Institute of Advanced Industrial Science and Technology, 1-8-31, Ikeda, Osaka 563-8577, Japan.
Takahiro TagamiAnimal Breeding and Reproduction Research Division, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, 2 Ikenodai, Tsukuba, Ibaraki 305-0901, Japan.
Isao OishiBiomedical Research Institute, National Institute of Advanced Industrial Science and Technology, 1-8-31, Ikeda, Osaka 563-8577, Japan.
National Institute of Advanced Industrial Science and Technology · JPCosmo Bio (Japan) · JPNational Agriculture and Food Research Organization · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Increased commercial demand for monoclonal antibodies (mAbs) has resulted in the urgent need to establish efficient production systems. We previously developed a transgenic chicken bioreactor system that effectively produced human cytokines in egg whites using genome-edited transgenic chickens. Here, we describe the application of this system to mAb production. The genes encoding the heavy and light chains of humanized anti-HER2 mAb, linked by a 2A peptide sequence, were integrated into the chicken ovalbumin gene locus using a CRISPR/Cas9 protocol. The knock-in hens produced a fully assembled humanized mAb in their eggs. The mAb expression level in the egg white was 1.4-1.9 mg/mL, as determined by ELISA. Furthermore, the antigen binding affinity of the anti-HER2 mAb obtained was estimated to be equal to that of the therapeutic anti-HER2 mAb (trastuzumab). In addition, antigen-specific binding by the egg white mAb was demonstrated by immunofluorescence against HER2-positive and -negative cells. These results indicate that the chicken bioreactor system can efficiently produce mAbs with antigen binding capacity and can serve as an alternative production system for commercial mAbs.

Indexed as

CRISPR-Cas SystemsAnimalsAnimals, Genetically ModifiedAntibodies, MonoclonalBioreactorsChickensEgg WhiteErb-b2 Receptor Tyrosine KinasesFemaleGene EditingHumansPlasmidsTrastuzumabZygoteAntibodies, MonoclonalERBB2 protein, humanErb-b2 Receptor Tyrosine KinasesTrastuzumabantibody productionbioreactorchickengenome editingknock-in

Identifiers

PMID33396657
PMCPMC7823952
OpenAlexW3113762334

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.