Evidence map›Paper›PMID 22850671›Full record

ArticleThe EMBO journal2012

Staphylococcus aureus Staphopain A inhibits CXCR2-dependent neutrophil activation and chemotaxis.

Alexander J Laarman, Gerdien Mijnheer, Joe M Mootz, Willemien J M van Rooijen, Maartje Ruyken, Cheryl L Malone, Erik C Heezius, Richard Ward, Graeme Milligan, Jos A G van Strijp and 4 more

Open access · greenAbstract read
In one paragraph

Article in The EMBO journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed
2.7field-weighted citation impact, top 10% 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, 107 citations in OpenAlex.

  1. Article
  2. The secreted proteasesVirulence · 2025
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  6. Article
  7. DNA and cell biology · 2024
    Review
  8. CXCR2 perturbation promotesJournal of medical microbiology · 2024
    Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Activation of Human Platelets byPathogens (Basel, Switzerland) · 2022
    Article
  20. Review

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

14 authors at 3 institutions in 3 countries.

Alexander J LaarmanDepartment of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands.
Gerdien Mijnheer
Joe M Mootz
Willemien J M van Rooijen
Maartje Ruyken
Cheryl L Malone
Erik C Heezius
Richard Ward
Graeme Milligan
Jos A G van Strijp
Carla J C de Haas
Alexander R Horswill
Kok P M van Kessel
Suzan H M Rooijakkers
University Medical Center Utrecht · NLUniversity of Iowa · USUniversity of Glasgow · GB

Funding

Quorum sensing-dependent interactions with biofilms and innate immunity defensesR01AI078921 · NIAID · UNIVERSITY OF IOWA · PI HORSWILL, ALEXANDER R · 2008 to 2012
$2.0M
NIAID NIH HHS AI078921NIAID NIH HHS R01 AI078921
6 · The paper itself

Abstract

The CXC chemokine receptor 2 (CXCR2) on neutrophils, which recognizes chemokines produced at the site of infection, plays an important role in antimicrobial host defenses such as neutrophil activation and chemotaxis. Staphylococcus aureus is a successful human pathogen secreting a number of proteolytic enzymes, but their influence on the host immune system is not well understood. Here, we identify the cysteine protease Staphopain A as a chemokine receptor blocker. Neutrophils treated with Staphopain A are unresponsive to activation by all unique CXCR2 chemokines due to cleavage of the N-terminal domain, which can be neutralized by specific protease inhibitors. Moreover, Staphopain A inhibits neutrophil migration towards CXCR2 chemokines. By comparing a methicillin-resistant S. aureus (MRSA) strain with an isogenic Staphopain A mutant, we demonstrate that Staphopain A is the only secreted protease with activity towards CXCR2. Although the inability to cleave murine CXCR2 limits in-vivo studies, our data indicate that Staphopain A is an important immunomodulatory protein that blocks neutrophil recruitment by specific cleavage of the N-terminal domain of human CXCR2.

Indexed as

AnimalsBacterial ProteinsCells, CulturedChemotaxis, LeukocyteCysteine EndopeptidasesFemaleHEK293 CellsHumansMiceMice, Inbred C57BLNeutrophil ActivationNeutrophil InfiltrationNeutrophilsReceptors, Interleukin-8BU937 CellsBacterial ProteinsCysteine EndopeptidasesReceptors, Interleukin-8Bstaphopain A protein, Staphylococcus aureus

Identifiers

PMID22850671
PMCPMC3433787
OpenAlexW2129016377

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.