Evidence map›Paper›PMID 34518537›Full record

ArticleNPJ vaccines2021

Deimmunization of flagellin for repeated administration as a vaccine adjuvant.

Koemchhoy Khim, Yong Jun Bang, Sao Puth, Yoonjoo Choi, Youn Suhk Lee, Kwangjoon Jeong, Shee Eun Lee, Joon Haeng Rhee

Open access · goldAbstract read
In one paragraph

Article in NPJ vaccines, 2021. 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
2.0field-weighted citation impact, top 13% 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, 37 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Review
  5. Harnessing flagellin ofApplied and environmental microbiology · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Toll-like receptor agonists as cancer vaccine adjuvants.Human vaccines & immunotherapeutics · 2024
    Review
  10. Article
  11. Article
  12. Vaccines · 2024
    Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. 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

8 authors at 2 institutions in 2 countries.

Koemchhoy Khim *Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, Republic of Korea.
Yong Jun Bang *Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, Republic of Korea.
Sao PuthClinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, Republic of Korea.ORCID http://orcid.org/0000-0002-3792-9505
Yoonjoo ChoiCombinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea.ORCID http://orcid.org/0000-0001-9687-8093
Youn Suhk LeeImmunotherapy Innovation Center, Hwasun-gun, Jeonnam, Republic of Korea.
Kwangjoon JeongImmunotherapy Innovation Center, Hwasun-gun, Jeonnam, Republic of Korea.ORCID http://orcid.org/0000-0001-9413-6934
Shee Eun LeeClinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, Republic of Korea. selee@chonnam.ac.kr.ORCID http://orcid.org/0000-0002-2023-3317
Joon Haeng RheeClinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, Republic of Korea. jhrhee@chonnam.ac.kr.ORCID http://orcid.org/0000-0003-4018-3203
Chonnam National University · KRIo Therapeutics (United States) · US

Funding

National Research Foundation of Korea (NRF) 2018R1A5A2024181National Research Foundation of Korea (NRF) NRF-2019R1A5A2027521National Research Foundation of Korea (NRF) NRF-2020M3A9G3080282NIEHS NIH HHS 27302C0038
6 · The paper itself

Abstract

Flagellin, a protein-based Toll-like receptor agonist, is a versatile adjuvant applicable to wide spectrum of vaccines and immunotherapies. Given reiterated treatments of immunogenic biopharmaceuticals should lead to antibody responses precluding repeated administration, the development of flagellin not inducing specific antibodies would greatly expand the chances of clinical applications. Here we computationally identified immunogenic regions in Vibrio vulnificus flagellin B and deimmunized by simply removing a B cell epitope region. The recombinant deimmunized FlaB (dFlaB) maintains stable TLR5-stimulating activity. Multiple immunization of dFlaB does not induce FlaB-specific B cell responses in mice. Intranasally co-administered dFlaB with influenza vaccine enhanced strong Ag-specific immune responses in both systemic and mucosal compartments devoid of FlaB-specific Ab production. Notably, dFlaB showed better protective immune responses against lethal viral challenge compared with wild type FlaB. The deimmunizing B cell epitope deletion did not compromise stability and adjuvanticity, while suppressing unwanted antibody responses that may negatively affected vaccine antigen-directed immune responses in repeated vaccinations. We explain the underlying mechanism of deimmunization by employing molecular dynamics analysis.

Identifiers

PMID34518537
PMCPMC8438039
OpenAlexW3201188452

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Registered trials

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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.