Evidence map›Paper›PMID 24521784›Full record

ArticleClinical and vaccine immunology : CVI2014

Trained immunity or tolerance: opposing functional programs induced in human monocytes after engagement of various pattern recognition receptors.

Daniela C Ifrim, Jessica Quintin, Leo A B Joosten, Cor Jacobs, Trees Jansen, Liesbeth Jacobs, Neil A R Gow, David L Williams, Jos W M van der Meer, Mihai G Netea

Open access · diamondAbstract read
In one paragraph

Article in Clinical and vaccine immunology : CVI, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 221 papers.

0numbers the graph read from it
0cells of the map it votes in
221citing papers in PubMed
6.7field-weighted citation impact, top 2% 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

221 citing papers in PubMed, 342 citations in OpenAlex.

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  14. Host- and pathogen-related determinants of pulmonaryEuropean respiratory review : an official journal of the European Respiratory Society · 2026
    Review
  15. Article
  16. Review
  17. Introduction to the Immune System.Methods in molecular biology (Clifton, N.J.) · 2026
    Review
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  19. Review
  20. Article

161 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

10 authors at 4 institutions in 3 countries.

Daniela C IfrimRadboud University Medical Center, Department of Internal Medicine, Division of Experimental Internal Medicine, Nijmegen, The Netherlands.
Jessica Quintin
Leo A B Joosten
Cor Jacobs
Trees Jansen
Liesbeth Jacobs
Neil A R Gow
David L Williams
Jos W M van der Meer
Mihai G Netea
Radboud University Medical Center · NLRadboud University Nijmegen · NLEast Tennessee State University · USUniversity of Aberdeen · GB

Funding

AMELIORATION OF SEPSIS BY MACROPHAGE ACTIVATIONR01GM053522 · NIGMS · EAST TENNESSEE STATE UNIVERSITY · PI WILLIAMS, DAVID L. · 1996 to 2015
$3.4M
NIGMS NIH HHS GM53522NIGMS NIH HHS R01 GM053522Wellcome Trust
6 · The paper itself

Abstract

Upon priming with Candida albicans or with the fungal cell wall component β-glucan, monocytes respond with an increased cytokine production upon restimulation, a phenomenon termed "trained immunity." In contrast, the prestimulation of monocytes with lipopolysaccharide has long been known to induce tolerance. Because the vast majority of commensal microorganisms belong to bacterial or viral phyla, we sought to systematically investigate the functional reprogramming of monocytes induced by the stimulation of pattern recognition receptors (PRRs) with various bacterial or viral ligands. Monocytes were functionally programmed for either enhanced (training) or decreased (tolerance) cytokine production, depending on the type and concentration of ligand they encountered. The functional reprogramming of monocytes was also associated with cell shape, granulocity, and cell surface marker modifications. The training effect required p38- and Jun N-terminal protein kinase (JNK)-mediated mitogen-activated protein kinase (MAPK) signaling, with specific signaling patterns directing the functional fate of the cell. The long-term effects on the function of monocytes were mediated by epigenetic events, with both histone methylation and acetylation inhibitors blocking the training effects. In conclusion, our experiments identify the ability of monocytes to acquire adaptive characteristics after prior activation with a wide variety of ligands. Trained immunity and tolerance are two distinct and opposing functional programs induced by the specific microbial ligands engaging the monocytes.

Indexed as

Immune ToleranceAntigens, BacterialAntigens, ViralBacteriaCandida albicansCytokinesHumansMonocytesReceptors, Pattern RecognitionVirusesAntigens, BacterialAntigens, ViralCytokinesReceptors, Pattern Recognition

Identifiers

PMID24521784
PMCPMC3993125
OpenAlexW2114749317

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.