Evidence map›Paper›PMID 22044420›Full record

ArticleImmunology2011

Selective culling of high avidity antigen-specific CD4+ T cells after virulent Salmonella infection.

James M Ertelt, Tanner M Johanns, Margaret A Mysz, Minelva R Nanton, Jared H Rowe, Marijo N Aguilera, Sing Sing Way

Open access · greenAbstract read
In one paragraph

Article in Immunology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
4.2field-weighted citation impact, top 8% 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

18 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
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  5. Cytomegalovirus (CMV) Epitope-Specific CD4Journal of immunology (Baltimore, Md. : 1950) · 2017
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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

7 authors at 2 institutions in 1 country.

James M ErteltDepartment of Pediatrics, University of Minnesota School of Medicine, Center for Microbiology and Infectious Disease Translational Research, Minneapolis, MN 55455, USA.
Tanner M Johanns
Margaret A Mysz
Minelva R Nanton
Jared H Rowe
Marijo N Aguilera
Sing Sing Way
University of Minnesota · USUniversity of Minnesota, Duluth · US

Funding

The Immune Pathogenesis of Prenatal Listeria monocytogenes InfectionR01AI100934 · NIAID · UNIVERSITY OF MINNESOTA · PI WAY, SING SING · 2012 to 2016
$2.3M
Regulatory T cells dictate immunity during persistent Salmonella infectionR01AI087830 · NIAID · UNIVERSITY OF MINNESOTA · PI WAY, SING SING · 2010 to 2014
$1.8M
Acute infection overrides PDL-1 mediated T cell suppression in autoimmune DMF30DK084674 · NIDDK · UNIVERSITY OF MINNESOTA · PI ROWE, JARED H. · 2009 to 2013
$208k
Defining the Protective CD4+ T cell Responses to Salmonella typhimuriumF31AI091298 · NIAID · UNIVERSITY OF MINNESOTA · PI NANTON, MINELVA ROMELIA · 2010 to 2012
$116k
NIAID NIH HHS F31 AI091298NIAID NIH HHS F31AI091298NIAID NIH HHS R01 AI087830NIAID NIH HHS R01AI087830NIAID NIH HHS R01 AI100934NIDDK NIH HHS F30 DK084674NIDDK NIH HHS F30DK084674
6 · The paper itself

Abstract

Typhoid fever is a persistent infection caused by host-adapted Salmonella strains adept at circumventing immune-mediated host defences. Given the importance of T cells in protection, the culling of activated CD4+ T cells after primary infection has been proposed as a potential immune evasion strategy used by this pathogen. We demonstrate that the purging of activated antigen-specific CD4+ T cells after virulent Salmonella infection requires SPI-2 encoded virulence determinants, and is not restricted only to cells with specificity to Salmonella-expressed antigens, but extends to CD4+ T cells primed to expand by co-infection with recombinant Listeria monocytogenes. Unexpectedly, however, the loss of activated CD4+ T cells during Salmonella infection demonstrated using a monoclonal population of adoptively transferred CD4+ T cells was not reproduced among the endogenous repertoire of antigen-specific CD4+ T cells identified with MHC class II tetramer. Analysis of T-cell receptor variable segment usage revealed the selective loss and reciprocal enrichment of defined CD4+ T-cell subsets after Salmonella co-infection that is associated with the purging of antigen-specific cells with the highest intensity of tetramer staining. Hence, virulent Salmonella triggers the selective culling of high avidity activated CD4+ T-cell subsets, which re-shapes the repertoire of antigen-specific T cells that persist later after infection.

Indexed as

Lymphocyte ActivationSalmonellaAdoptive TransferAnimalsAntigens, BacterialBacterial ProteinsCD4-Positive T-LymphocytesCoinfectionFemaleListeria monocytogenesListeriosisMajor Histocompatibility ComplexMaleMembrane ProteinsMiceMice, Inbred C57BLAntigens, BacterialBacterial ProteinsMembrane ProteinsSPI-2 protein, Salmonella

Identifiers

PMID22044420
PMCPMC3230801
OpenAlexW1501424248

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.