Evidence map›Paper›PMID 32661939›Full record

ArticleProbiotics and antimicrobial proteins2021

Recombinant Lactococcus Lactis Displaying Omp31 Antigen of Brucella melitensis Can Induce an Immunogenic Response in BALB/c Mice.

Hoda Shirdast, Fatemeh Ebrahimzadeh, Amir Hossein Taromchi, Yousef Mortazavi, Abdolreza Esmaeilzadeh, Mohammad Hadi Sekhavati, Keivan Nedaei, Esmat Mirabzadeh

Abstract read
PubMed Publisher
In one paragraph

Article in Probiotics and antimicrobial proteins, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 6% 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, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Journal of microbiology and biotechnology · 2025
    Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. A subunit vaccine based onActa biochimica et biophysica Sinica · 2024
    Article
  7. Mucosal Administration ofJournal of microbiology and biotechnology · 2024
    Article
  8. Article
  9. [Construction, Identification, and Expression ofSichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2023
    Article
  10. Review
  11. Article
  12. Immunological Effects of RecombinantFrontiers in immunology · 2022
    Article
  13. Peptide-Based Vaccines for Tuberculosis.Frontiers in immunology · 2022
    Review
  14. Review
  15. Review
  16. Vaccines · 2021
    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 3 institutions in 1 country.

Hoda ShirdastDepartment of Medical Biotechnology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
Fatemeh EbrahimzadehDepartment of Medical Biotechnology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
Amir Hossein TaromchiDepartment of Medical Biotechnology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran. taromchi@zums.ac.ir.ORCID 0000-0003-2268-6544
Yousef MortazaviDepartment of Medical Biotechnology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
Abdolreza EsmaeilzadehCancer Gene Therapy Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.
Mohammad Hadi SekhavatiDepartment of Animal Science, Ferdowsi University of Mashhad, Mashhad, Iran.
Keivan NedaeiDepartment of Medical Biotechnology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
Esmat MirabzadehDepartment of Molecular Medicine, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran.
Zanjan University of Medical Sciences · IRFerdowsi University of Mashhad · IRPasteur Institute of Iran · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since Brucella infection mostly occurs through the mucosal surfaces, immune response induced by vaccine that is delivered by a way of mucosal route can be drastically enhanced to control the brucellosis. Omp31is the major outer membrane protein of Brucella, and is considered as a protective antigen against Brucella infection. Accordingly, Lactococcus lactis has been used as an antigen-delivering vector to develop a vaccine-induced mucosal response for having a safer vaccination against brucellosis. A designed omp31 gene fused to the usp45 signal peptide and M6 cell wall anchor was sub cloned in the pNZ7021 expression vector, and a recombinant L. lactis displaying Omp31 was constructed. Omp31 protein expression was confirmed using Western blotting and immunofluorescence analysis. Animals were orally and intraperitoneally immunized with live or killed L. lactis expressing Omp31, respectively. The humoral and cellular immune responses were evaluated by measuring the specific cytokines and antibodies. sIgA, serum IgA, IgM, and total IgG antibodies significantly increased in the mice immunized with live recombinant L. lactis expressing Omp31 and also serum IgM, and total IgG antibodies significantly increased in mice immunized with killed recombinant L. lactis expressing Omp31. Among IgG subtypes, IgG2a response was significantly higher in both groups compared to IgG1. In mice groups immunized with recombinant L. lactis, the IFN-γ and IL-10 level elevated; however, there was no change in the level of IL-4. These results indicated that recombinants L. lactis induce both humoral and cellular immune responses in mice, and also vaccines based on L. lactis-derived live carriers are promising interventions against Brucella melitensis infections.

Indexed as

Bacterial Outer Membrane ProteinsBrucella VaccineBrucellosisLactococcus lactisMicroorganisms, Genetically-ModifiedAnimalsBrucella melitensisFemaleMiceMice, Inbred BALB CBacterial Outer Membrane ProteinsBrucella VaccineOmp31 protein, Brucella melitensisBrucellaBrucellosisLactococcus lactisOmp31pNZ7021Vaccine

Identifiers

PMID32661939
OpenAlexW3043621662

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.