Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 367

The DOI matches its Crossref record; 48 of the 48 references it cites were found in a registry or an index.

Induction of the cyclic nucleotide phosphodiesterase PDE4B is essential for LPS-activated TNF-α responses

Open access
Jin, S.-L. Catherine, Conti, Marco·2002·Proceedings of the National Academy of Sciences

Abstract

Lipopolysaccharide (LPS) stimulation of the innate immune response requires the activation of signaling cascades that culminate in the synthesis and secretion of proinflammatory cytokines. Given the inhibitory effects of phosphodiesterase (PDE) inhibitors on LPS-induced cytokine production, we have investigated LPS responses in mice deficient in PDE4 (type 4 cAMP-specific PDE)-B and PDE4D. LPS stimulation of mouse peripheral leukocytes induced PDE4B mRNA accumulation and increased PDE4 activity. This response was completely absent in mice deficient in PDE4B but not PDE4D. LPS induction of tumor necrosis factor-α secretion by circulating leukocytes was decreased by approximately 90% in mice deficient in PDE4B but not in mice lacking PDE4D. The impaired LPS response was evident regardless of the LPS dose used for stimulation and was associated with a more than 90% decrease in tumor necrosis factor-α mRNA accumulation. A decreased responsiveness to LPS was also present in other inflammatory cells, including peritoneal and lung macrophages. These findings demonstrate that PDE4B gene activation by LPS constitutes a feedback regulation essential for an efficient immune response.

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 · 10.1073/pnas.122041599

Cites

48 of 48 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 48 references

Cited by

See all 367

Metadata

Authors
Jin, S.-L. C., & Conti, M.
Venue
Proceedings of the National Academy of Sciences
Published
2002-05-21
Volume
99
Issue
11
Pages
7628-7633
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2159269771
Cited by
367
References
48
FWCI
7.13
Type
journal article
Language
en
Open access
green

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: Induction of the cyclic nucleotide phosphodiesterase PDE4B is essential for LPS-activated TNF-α responses. https://app.cochat.ai/papers/10.1073/pnas.122041599
The paper
Jin, S.-L. C., & Conti, M. (2002). Induction of the cyclic nucleotide phosphodiesterase PDE4B is essential for LPS-activated TNF-α responses. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.122041599

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.