Evidence map›Paper›PMID 19193240›Full record

ArticleBMC immunology2009

Combined TLR2 and TLR4 ligation in the context of bacterial or helminth extracts in human monocyte derived dendritic cells: molecular correlates for Th1/Th2 polarization.

Elly van Riet, Bart Everts, Kim Retra, Marion Phylipsen, Jaap J van Hellemond, Aloysius G M Tielens, Desiree van der Kleij, Franca C Hartgers, Maria Yazdanbakhsh

Open access · goldAbstract read
In one paragraph

Article in BMC immunology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 6% 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

63 citing papers in PubMed, 1 synthesis or guideline pooled it, 93 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Role of lamin A/C on dendritic cell function in antiviral immunity.Cellular and molecular life sciences : CMLS · 2024
    Article
  5. Review
  6. Article
  7. Article
  8. Ecoimmunology in the field: Measuring multiple dimensions of immune function with minimally invasive, field-adapted techniques.American journal of human biology : the official journal of the Human Biology Council · 2022
    Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Fundamental role of dendritic cells in inducing Th2 responses.The Korean journal of internal medicine · 2018
    Review
  17. Article
  18. Article
  19. Review
  20. Infective Larvae ofFrontiers in immunology · 2018
    Article

3 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

9 authors at 4 institutions in 1 country.

Elly van RietDepartment of Parasitology, Leiden University Medical Center, Leiden, The Netherlands. evanriet@lacdr.leidenuniv.nl
Bart Everts
Kim Retra
Marion Phylipsen
Jaap J van Hellemond
Aloysius G M Tielens
Desiree van der Kleij
Franca C Hartgers
Maria Yazdanbakhsh
Leiden University Medical Center · NLErasmus MC · NLMinistry of Defence · NLUtrecht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRecognition of pathogens by dendritic cells (DCs) through interaction with pattern recognition receptors, including Toll like receptors (TLR), is crucial for the initiation of appropriate polarized T helper (Th) cell responses. Yet, the characteristics and differences in molecular profiles of DCs with different T cell polarizing capacities are still poorly defined. To address this issue, the molecular profile of human monocyte derived DCs was characterized after exposure to TLR4 ligand LPS in combination with the Th1 promoting bacterial extracts from Listeria monocytogenes and Escherichia coli or the Th2 promoting helminth derived phospholipids from Schistosoma mansoni and Ascaris lumbricoides, all with TLR2 activating capacity.

resultsWith regard to the signalling pathways activated upon exposure to LPS and the TLR2 activating compounds, we find that the ratio of activated Mitogen Activated Protein Kinases (MAPK) p-ERK/p-p38 is lower in DCs stimulated with the bacterial products compared to DCs stimulated with the helminth products, which correlates with the Th1 and Th2 polarizing capacity of these compounds. Furthermore, analysis of the mRNA expression levels of a set of 25 carefully selected genes potentially involved in modulation of T cell polarization revealed that the mRNA expression of notch ligand delta-4 and transcription factor c-fos are differentially regulated and show a strong correlation with Th1 and Th2 polarization, respectively.

conclusionThis study shows that combined TLR2 and TLR4 activation in the context of different antigen sources can induce very distinct molecular profiles in DCs and suggests that the Th1/Th2 polarizing capacity of compounds can be predicted with the molecular signature they induce in DCs.

Indexed as

AnimalsAntigens, BacterialAntigens, HelminthAscaris lumbricoidesDendritic CellsEnzyme ActivationEscherichia coliGene ExpressionGene Expression ProfilingHumansListeria monocytogenesMitogen-Activated Protein KinasesMonocytesReverse Transcriptase Polymerase Chain ReactionRNA, MessengerSchistosoma mansoniAntigens, BacterialAntigens, HelminthMitogen-Activated Protein KinasesRNA, MessengerTLR2 protein, humanTLR4 protein, humanToll-Like Receptor 2Toll-Like Receptor 4

Identifiers

PMID19193240
PMCPMC2672924
OpenAlexW2144266158

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.