Evidence map›Paper›PMID 19751267›Full record

ReviewScandinavian journal of immunology2009

How do regulatory T cells work?

A Corthay

Registry-linked trialOpen access · bronzeAbstract readReview
In one paragraph

Review in Scandinavian journal of immunology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06427421 (Characterization of Autoreactive Regulatory and Conventional CD4 T Cells in Recent Onset Type 1 Diabetes and Control Individuals), which is not on this map. Cited by 293 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
293citing papers in PubMed, 4 pooled it
11.6field-weighted citation impact, top 1% 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.

NCT06427421 narecruitingnot on this mapstarted 2025, after this paper: background citation

Characterization of Autoreactive Regulatory and Conventional CD4 T Cells in Recent Onset Type 1 Diabetes and Control Individuals

TypeinterventionalSponsorAssistance Publique - Hôpitaux de ParisRan2025 to 2027Enrolled80ConditionsType 1 DiabetesArmsFrequency of Treg and Teffs, Phenotype of Treg and Teffs, RNA seq analysis, HLA typing, beta-cell autoantibody dosage
3 · Its place in the literature

Who cites it

293 citing papers in PubMed, 4 syntheses or guidelines pooled it, 637 citations in OpenAlex.

  1. Hyperprogressive disease in carcinoma induced by immune checkpoint inhibitor therapy: a systematic review.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
    Pooled it
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  7. Exploring cannabidiol effects on inflammatory markers in individuals with cocaine use disorder: a randomized controlled trial.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2021
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  18. Evaluation ofCurrent protein & peptide science · 2026
    Article
  19. Immune Cells in Preeclampsia.International journal of molecular sciences · 2025
    Review
  20. Remote loading of an autoantigen in PLGA nanoparticles for the treatment of multiple sclerosis.Journal of controlled release : official journal of the Controlled Release Society · 2025
    Article

233 more citing papers are in PubMed but not listed here.

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

1 author at 1 institution in 1 country.

A CorthayCentre for Immune Regulation, Institute of Immunology, University of Oslo and Oslo University Hospital, Rikshospitalet, Oslo, Norway. alexandre.corthay@medisin.uio.no
Oslo University Hospital · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

CD4(+) T cells are commonly divided into regulatory T (Treg) cells and conventional T helper (Th) cells. Th cells control adaptive immunity against pathogens and cancer by activating other effector immune cells. Treg cells are defined as CD4(+) T cells in charge of suppressing potentially deleterious activities of Th cells. This review briefly summarizes the current knowledge in the Treg field and defines some key questions that remain to be answered. Suggested functions for Treg cells include: prevention of autoimmune diseases by maintaining self-tolerance; suppression of allergy, asthma and pathogen-induced immunopathology; feto-maternal tolerance; and oral tolerance. Identification of Treg cells remains problematic, because accumulating evidence suggests that all the presently-used Treg markers (CD25, CTLA-4, GITR, LAG-3, CD127 and Foxp3) represent general T-cell activation markers, rather than being truly Treg-specific. Treg-cell activation is antigen-specific, which implies that suppressive activities of Treg cells are antigen-dependent. It has been proposed that Treg cells would be self-reactive, but extensive TCR repertoire analysis suggests that self-reactivity may be the exception rather than the rule. The classification of Treg cells as a separate lineage remains controversial because the ability to suppress is not an exclusive Treg property. Suppressive activities attributed to Treg cells may in reality, at least in some experimental settings, be exerted by conventional Th cell subsets, such as Th1, Th2, Th17 and T follicular (Tfh) cells. Recent reports have also demonstrated that Foxp3(+) Treg cells may differentiate in vivo into conventional effector Th cells, with or without concomitant downregulation of Foxp3.

Indexed as

AnimalsAutoimmunityBiomarkersCell LineageForkhead Transcription FactorsHumansImmune ToleranceT-Lymphocytes, RegulatoryBiomarkersForkhead Transcription FactorsFOXP3 protein, humanFoxp3 protein, mouse

Identifiers

PMID19751267
PMCPMC2784904
OpenAlexW2023214087

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.