Evidence map›Paper›PMID 19487460›Full record

ArticleMolecular and cellular biology2009

Defective histone acetylation is responsible for the diminished expression of cyclooxygenase 2 in idiopathic pulmonary fibrosis.

William R Coward, Keiria Watts, Carol A Feghali-Bostwick, Alan Knox, Linhua Pang

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 96 papers.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed
9.3field-weighted citation impact, top 2% 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

96 citing papers in PubMed, 172 citations in OpenAlex.

  1. Matrices of physiologic stiffness potently inactivate idiopathic pulmonary fibrosis fibroblasts.American journal of respiratory cell and molecular biology · 2013
    Trial
  2. Hallmarks of the ageing lung: 10 years later.The European respiratory journal · 2026
    Review
  3. Review
  4. Review
  5. Review
  6. [Therapeutic mechanism ofNan fang yi ke da xue xue bao = Journal of Southern Medical University · 2025
    Article
  7. Linking Lipid Metabolism and Immune Function: New Insights into Chronic Respiratory Diseases.Pathophysiology : the official journal of the International Society for Pathophysiology · 2025
    Review
  8. Review
  9. The evolution ofEuropean respiratory review : an official journal of the European Respiratory Society · 2024
    Review
  10. Review
  11. Review
  12. Article
  13. Review
  14. Epigenetics as a versatile regulator of fibrosis.Journal of translational medicine · 2023
    Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Airway remodeling: TheFrontiers in allergy · 2022
    Review
  20. Review

36 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

5 authors at 2 institutions in 2 countries.

William R CowardDivision of Respiratory Medicine, City Hospital, University of Nottingham, Hucknall Road, Nottingham, United Kingdom.
Keiria Watts
Carol A Feghali-Bostwick
Alan Knox
Linhua Pang
University of Nottingham · GBUniversity of Pittsburgh · US

Funding

Medical Research Council G0600890Medical Research Council G0600890(78993)
6 · The paper itself

Abstract

Diminished cyclooxygenase 2 (COX-2) expression in fibroblasts, with a resultant defect in the production of the antifibrotic mediator prostaglandin E(2), plays a key role in the pathogenesis of idiopathic pulmonary fibrosis (IPF). Here, we have characterized the molecular mechanism. We found that COX-2 mRNA levels in fibroblasts from patients with IPF (F-IPF) were significantly lower than those in fibroblasts from nonfibrotic lungs (F-NL) after transforming growth factor beta1 and interleukin-1beta treatment but that COX-2 mRNA degradation rates were similar, suggesting defective transcription. A reporter gene assay showed that there were no clear differences between F-IPF and F-NL in transcription factor involvement and activation in COX-2 gene transcription. However, a chromatin immunoprecipitation assay revealed that transcription factor binding to the COX-2 promoter in F-IPF was reduced compared to that in F-NL, an effect that was dynamically linked to reduced histone H3 and H4 acetylation due to decreased recruitment of histone acetyltransferases (HATs) and increased recruitment of transcriptional corepressor complexes to the COX-2 promoter. The treatment of F-IPF with histone deacetylase (HDAC) inhibitors together with cytokines increased histone H3 and H4 acetylation. Both HDAC inhibitors and the overexpression of HATs restored cytokine-induced COX-2 mRNA and protein expression in F-IPF. The results demonstrate that epigenetic abnormality in the form of histone hypoacetylation is responsible for diminished COX-2 expression in IPF.

Indexed as

Gene Expression Regulation, EnzymologicAcetylationBlotting, WesternCells, CulturedCyclooxygenase 2DinoprostoneFibroblastsHistone AcetyltransferasesHistone DeacetylasesHistonesHumansIdiopathic Pulmonary FibrosisInterleukin-1betaLuciferasesPromoter Regions, GeneticProtein BindingCyclooxygenase 2DinoprostoneHistone AcetyltransferasesHistone DeacetylasesHistonesInterleukin-1betaLuciferasesRNA, MessengerTranscription FactorsTransforming Growth Factor beta1

Identifiers

PMID19487460
PMCPMC2715818
OpenAlexW2103966606

What OpenQuestion holds

Textmetadata
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.