Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 300

The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index.

YopJ of Yersinia pseudotuberculosis is required for the inhibition of macrophage TNF‐α production and downregulation of the MAP kinases p38 and JNK

Palmer, Lance E., Hobbie, Silke, Galán, Jorge E., Bliska, James B.·1998·Molecular Microbiology

Abstract

Exposure of macrophages to lipopolysaccharide (LPS) leads to production of the pro‐inflammatory cytokine, tumour necrosis factor alpha (TNF‐α). Previous studies have suggested that pathogenic Yersinia spp. inhibit LPS‐mediated production of TNF‐α in macrophages, and that one of the Yop proteins secreted by the plasmid‐encoded type III pathway is required for this activity. We found that TNF‐α production was inhibited when J774A.1 murine macrophages were infected with wild‐type Y. pseudotuberculosis but not with an isogenic ysc mutant defective for Yop secretion. We inactivated multiple yop genes to identify which of these factors are required for the inhibition of TNF‐α production. A mutant unable to express yopJ was defective for the inhibition of TNF‐α production. Production of TNF‐α is regulated at the transcriptional and translational levels by several mitogen‐activated protein (MAP) kinases. The MAP kinases p38 and JNK underwent sustained activation in macrophages infected with the yopJ mutant. Conversely, p38 and JNK were downregulated in macrophages infected with the wild‐type strain. The ability of the yopJ mutant to downregulate p38 and JNK and to inhibit production of TNF‐α was restored by the expression of yopJ+in trans. Therefore, YopJ is required for Y. pseudotuberculosis to downregulate MAP kinases and inhibit the production of TNF‐α in macrophages.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1046/j.1365-2958.1998.00740.x

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 49 references

Cited by

See all 300

Metadata

Authors
Palmer, L. E., Hobbie, S., Galán, J. E., & Bliska, J. B.
Venue
Molecular Microbiology
Publisher
Wiley
Published
1998-03
Volume
27
Issue
5
Pages
953-965
ISSN
  • 0950-382X (ISSN-L)
  • 1365-2958
OpenAlex
W2129319176
Cited by
300
References
49
FWCI
13.46
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: YopJ of Yersinia pseudotuberculosis is required for the inhibition of macrophage TNF‐α production and downregulation of the MAP kinases p38 and JNK. https://app.cochat.ai/papers/10.1046/j.1365-2958.1998.00740.x
The paper
Palmer, L. E., Hobbie, S., Galán, J. E., & Bliska, J. B. (1998). YopJ of Yersinia pseudotuberculosis is required for the inhibition of macrophage TNF‐α production and downregulation of the MAP kinases p38 and JNK. Molecular Microbiology. https://doi.org/10.1046/j.1365-2958.1998.00740.x

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.