Evidence map›Paper›PMID 25610812›Full record

ArticleFrontiers in cellular and infection microbiology2014

Coxiella burnetii lipopolysaccharide blocks p38α-MAPK activation through the disruption of TLR-2 and TLR-4 association.

Filippo Conti, Nicolas Boucherit, Veronica Baldassarre, Virginie Trouplin, Rudolf Toman, Giovanna Mottola, Jean-Louis Mege, Eric Ghigo

Open access · goldAbstract read
In one paragraph

Article in Frontiers in cellular and infection microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
0.7field-weighted citation impact, top 31% 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

22 citing papers in PubMed, 21 citations in OpenAlex.

  1. Review
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  3. Review
  4. Review
  5. Article
  6. Article
  7. Infection and immunity · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. Protective Effects ofInternational journal of molecular sciences · 2021
    Article
  12. Review
  13. Recent Advances on the Innate Immune Response toFrontiers in cellular and infection microbiology · 2021
    Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Coxiella burnetii Lipopolysaccharide: What Do We Know?International journal of molecular sciences · 2017
    Review
  20. Article
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

8 authors at 4 institutions in 2 countries.

Filippo ContiCNRS UMR 7278, IRD198, INSERM U1095, Aix-Marseille Université Marseille, France.
Nicolas BoucheritCNRS UMR 7278, IRD198, INSERM U1095, Aix-Marseille Université Marseille, France.
Veronica BaldassarreCNRS UMR 7278, IRD198, INSERM U1095, Aix-Marseille Université Marseille, France.
Virginie TrouplinCNRS UMR 7278, IRD198, INSERM U1095, Aix-Marseille Université Marseille, France.
Rudolf TomanLaboratory for Diagnosis and Prevention of Rickettsial and Chlamydial Infections, Institute of Virology, Slovak Academy of Sciences Bratislava, Slovakia.
Giovanna MottolaUMR MD2, Faculté de Médecine NORD, Aix-Marseille Université and IRBA (Institute of Research in Biology of the French Army) Marseille, France ; Laboratory of Biochemistry, La Timone University Hospital, Assistance Publique Hôpitaux de Marseille Marseille, France.
Jean-Louis MegeCNRS UMR 7278, IRD198, INSERM U1095, Aix-Marseille Université Marseille, France.
Eric GhigoCNRS UMR 7278, IRD198, INSERM U1095, Aix-Marseille Université Marseille, France.
Aix-Marseille Université · FRInserm · FRInstitute of Virology of the Slovak Academy of Sciences · SKLaboratoire de Biochimie · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To survive in macrophages, Coxiella burnetii hijacks the activation pathway of macrophages. Recently, we have demonstrated that C. burnetii, via its lipopolysaccharide (LPS), avoids the activation of p38α-MAPK through an antagonistic engagement of Toll-like receptor (TLR)-4. We investigated the fine-tuned mechanism leading to the absence of activation of the p38α-MAPK despite TLR-4 engagement. In macrophages challenged with LPS from the avirulent variants of C. burnetii, TLR-4 and TLR-2 co-immunoprecipitated. This association was absent in cells challenged by the LPS of pathogenic C. burnetii. The disruption makes TLRs unable to signal during the recognition of the LPS of pathogenic C. burnetii. The disruption of TLR-2 and TLR-4 was induced by the re-organization of the macrophage cytoskeleton by C. burnetii LPS. Interestingly, blocking the actin cytoskeleton re-organization relieved the disruption of the association TLR-2/TLR-4 by pathogenic C. burnetii and rescued the p38α-MAPK activation by C. burnetii. We elucidated an unexpected mechanism allowing pathogenic C. burnetii to avoid macrophage activation by the disruption of the TLR-2 and TLR-4 association.

Indexed as

AnimalsCells, CulturedCoxiella burnetiiEnzyme ActivationHost-Pathogen InteractionsHumansLipopolysaccharidesMacrophagesMiceMice, Inbred C57BLMitogen-Activated Protein Kinase 14Protein BindingQ FeverToll-Like Receptor 2Toll-Like Receptor 4LipopolysaccharidesMitogen-Activated Protein Kinase 14Tlr2 protein, mouseTlr4 protein, mouseToll-Like Receptor 2Toll-Like Receptor 4Coxiella burnetiicytoskeletonmacrophagesTLR-2TLR-4

Identifiers

PMID25610812
PMCPMC4285172
OpenAlexW2025779965

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.