Evidence map›Paper›PMID 34880854›Full record

ArticleFrontiers in immunology2021

Analysis of Iron and Iron-Interacting Protein Dynamics During T-Cell Activation.

Megan R Teh, Joe N Frost, Andrew E Armitage, Hal Drakesmith

Open access · goldAbstract read
In one paragraph

Article in Frontiers in immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

34 citing papers in PubMed, 52 citations in OpenAlex.

  1. Review
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  5. Review
  6. Article
  7. Article
  8. Review
  9. Metal Ions Within the Neuro-Immune-Tumor Axis.Journal of immunology research · 2026
    Review
  10. Iron and the immune system.Nature reviews. Immunology · 2025
    Review
  11. Review
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Presetting CAR-T cells during ex vivo biomanufacturing.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  18. Article
  19. Article
  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

4 authors at 2 institutions in 1 country.

Megan R TehMRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.
Joe N FrostMRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.
Andrew E ArmitageMRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.
Hal DrakesmithMRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.
MRC Weatherall Institute of Molecular Medicine · GBUniversity of Oxford · GB

Funding

Medical Research Council MC_UU_00008/10Medical Research Council MC_UU_12010/10
6 · The paper itself

Abstract

Recent findings have shown that iron is a powerful regulator of immune responses, which is of broad importance because iron deficiency is highly prevalent worldwide. However, the underlying reasons of why iron is needed by lymphocytes remain unclear. Using a combination of mathematical modelling, bioinformatic analysis and experimental work, we studied how iron influences T-cells. We identified iron-interacting proteins in CD4+ and CD8+ T-cell proteomes that were differentially expressed during activation, suggesting that pathways enriched with such proteins, including histone demethylation, may be impaired by iron deficiency. Consistent with this, iron-starved Th17 cells showed elevated expression of the repressive histone mark H3K27me3 and displayed reduced RORγt and IL-17a, highlighting a previously unappreciated role for iron in T-cell differentiation. Quantitatively, we estimated T-cell iron content and calculated that T-cell iron demand rapidly and substantially increases after activation. We modelled that these increased requirements will not be met during clinically defined iron deficiency, indicating that normalizing serum iron may benefit adaptive immunity. Conversely, modelling predicted that excess serum iron would not enhance CD8+ T-cell responses, which we confirmed by immunising inducible hepcidin knock-out mice that have very high serum iron concentrations. Therefore, iron deficiency impairs multiple aspects of T-cell responses, while iron overload likely has milder effects.

Indexed as

AnimalsCells, CulturedDatasets as TopicEpigenesis, GeneticGene OntologyHemeHepcidinsHumansIronIron-Binding ProteinsIron DeficienciesIron OverloadLymphocyte ActivationLymphopoiesisMiceMice, KnockoutHamp protein, mouseHemeHepcidinsIronIron-Binding ProteinsProteomeadaptive immunitydemethylationimmunometabolismironiron deficiencyiron overloadT-cellTh17 cells

Identifiers

PMID34880854
PMCPMC8647206
OpenAlexW3195609384

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.