Evidence map›Paper›PMID 34706134›Full record

ArticleJournal of applied microbiology2022

Egg yolk immunoglobulin (IgY) targeting SARS-CoV-2 S1 as potential virus entry blocker.

Lirong Bao, Cheng Zhang, Jinglu Lyu, Ping Yi, Xin Shen, Boyu Tang, Hang Zhao, Biao Ren, Yu Kuang, Linlin Zhou and 1 more

Open access · greenAbstract read
In one paragraph

Article in Journal of applied microbiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
6.1field-weighted citation impact, top 3% 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

22 citing papers in PubMed, 36 citations in OpenAlex.

  1. Trial
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  5. Avian Antibodies as Potential Therapeutic Tools.Antibodies (Basel, Switzerland) · 2025
    Review
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  7. Article
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  16. IgY Antibodies as Biotherapeutics in Biomedicine.Antibodies (Basel, Switzerland) · 2022
    Review
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  18. Article
  19. Article
  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

11 authors at 2 institutions in 1 country.

Lirong BaoState Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.ORCID https://orcid.org/0000-0003-1295-4146
Cheng ZhangState Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.
Jinglu LyuState Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.
Ping YiState Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.
Xin ShenState Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.
Boyu TangState Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.
Hang ZhaoState Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.
Biao RenState Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.
Yu KuangDepartment of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China.
Linlin ZhouDepartment of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China.
Yan LiState Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.
Sichuan University · CNWest China Medical Center of Sichuan University · CN

Funding

Independent Research Project of State Key Laboratory of Oral Diseases SKLOD202004Key Projects of Sichuan Provincial Department of Science and Technology 2020YFSY0008Sichuan University 2020scunCoV10009
6 · The paper itself

Abstract

aimsCOVID-19 pandemic caused by SARS-CoV-2 has become a public health crisis worldwide. In this study, we aimed at demonstrating the neutralizing potential of the IgY produced after immunizing chicken with a recombinant SARS-CoV-2 spike protein S1 subunit. METHODS AND

resultsE. coli BL21 carrying plasmid pET28a-S1 was induced with IPTG for the expression of SARS-CoV-2 S1 protein. The recombinant His-tagged S1 was purified and verified by SDS-PAGE, Western blot and biolayer interferometry (BLI) assay. Then S1 protein emulsified with Freund's adjuvant was used to immunize layer chickens. Specific IgY against S1 (S1-IgY) produced from egg yolks of these chickens exhibited a high titer (1:25,600) and a strong binding affinity to S1 (K

conclusionsWe demonstrated here that after immunization of chickens with our recombinant S1 protein, IgY neutralizing antibodies were generated against the SARS-CoV-2 spike protein S1 subunit; therefore, showing the potential use of IgY to block the entry of this virus. SIGNIFICANCE AND IMPACT OF THE STUDY: IgY targeting S1 subunit of SARS-CoV-2 could be a promising candidate for pre- and post-exposure prophylaxis or treatment of COVID-19. Administration of IgY-based oral preparation, oral or nasal spray may have profound implications for blocking SARS-CoV-2.

Indexed as

AnimalsAntibodies, NeutralizingChickensCOVID-19Egg YolkHumansImmunoglobulinsPandemicsSARS-CoV-2Spike Glycoprotein, CoronavirusVirus InternalizationAntibodies, NeutralizingIgYImmunoglobulinsSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2antibodyCOVID-19egg yolk immunoglobulin Y (IgY)hACE2S1SARS-CoV-2

Identifiers

PMID34706134
PMCPMC8657347
OpenAlexW3210470549

What OpenQuestion holds

Textmetadata
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.