Evidence map›Paper›PMID 24891088›Full record

ArticleImmunology2014

The serodominant secreted effector protein of Salmonella, SseB, is a strong CD4 antigen containing an immunodominant epitope presented by diverse HLA class II alleles.

Catherine J Reynolds, Claire Jones, Christoph J Blohmke, Thomas C Darton, Amelie Goudet, Ruhena Sergeant, Bernard Maillere, Andrew J Pollard, Daniel M Altmann, Rosemary J Boyton

Open access · hybridAbstract read
In one paragraph

Article in Immunology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 9% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Pathogens (Basel, Switzerland) · 2022
    Article
  8. Evasion of MAIT cell recognition by the AfricanProceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Polyphyletic Nature ofFrontiers in microbiology · 2018
    Article
  14. Article
  15. Vaccination against Salmonella Infection: the Mucosal Way.Microbiology and molecular biology reviews : MMBR · 2017
    Review
  16. Dual Immunization with SseB/Flagellin Provides Enhanced Protection againstJournal of immunology (Baltimore, Md. : 1950) · 2017
    Article
  17. Article
  18. Article
  19. Review
  20. Review
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

10 authors at 5 institutions in 2 countries.

Catherine J ReynoldsSection of Infectious Diseases and Immunity, Department of Medicine, Imperial College, Hammersmith Hospital, London, UK.
Claire Jones
Christoph J Blohmke
Thomas C Darton
Amelie Goudet
Ruhena Sergeant
Bernard Maillere
Andrew J Pollard
Daniel M Altmann
Rosemary J Boyton
Hammersmith Hospital · GBOxford BioMedica (United Kingdom) · GBUniversity of Oxford · GBCEA Paris-Saclay · FRInstitut de Biologie et Technologies · FR

Funding

NIAID NIH HHS HHSN272200900046CWellcome TrustWellcome Trust 092661
6 · The paper itself

Abstract

Detailed characterization of the protective T-cell response in salmonellosis is a pressing unmet need in light of the global burden of human Salmonella infections and the likely contribution of CD4 T cells to immunity against this intracellular infection. In previous studies screening patient sera against antigen arrays, SseB was noteworthy as a serodominant target of adaptive immunity, inducing significantly raised antibody responses in HIV-seronegative compared with seropositive patients. SseB is a secreted protein, part of the Espa superfamily, localized to the bacterial surface and forming part of the translocon of the type III secretion system (T3SS) encoded by Salmonella pathogenicity island 2. We demonstrate here that SseB is also a target of CD4 T-cell immunity, generating a substantial response after experimental infection in human volunteers, with around 0.1% of the peripheral repertoire responding to it. HLA-DR/peptide binding studies indicate that this protein encompasses a number of peptides with ability to bind to several different HLA-DR alleles. Of these, peptide 11 (p11) was shown in priming of both HLA-DR1 and HLA-DR4 transgenic mice to contain an immunodominant CD4 epitope. Analysis of responses in human donors showed immunity focused on p11 and another epitope in peptide 2. The high frequency of SseB-reactive CD4 T cells and the broad applicability to diverse HLA genotypes coupled with previous observations of serodominance and protective vaccination in mouse challenge experiments, make SseB a plausible candidate for next-generation Salmonella vaccines.

Indexed as

AllelesAmino Acid SequenceAnimalsAntigen PresentationBacterial ProteinsCD4 AntigensCD4-Positive T-LymphocytesEpitopes, T-LymphocyteGenotypeHistocompatibility Antigens Class IIHLA-DR AntigensHumansImmunodominant EpitopesMiceMice, TransgenicMolecular ChaperonesBacterial ProteinsCD4 AntigensEpitopes, T-LymphocyteHistocompatibility Antigens Class IIHLA-DR AntigensImmunodominant EpitopesMolecular ChaperonesPeptide FragmentsSseB protein, Salmonella typhimuriumCD4 epitopeHLA-DR transgenicSalmonellaSseBtype 3 secretion system

Identifiers

PMID24891088
PMCPMC4212957
OpenAlexW2078896359

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.