Evidence map›Paper›PMID 19648107›Full record

ArticleThe Journal of biological chemistry2009

Inflammasome-dependent caspase-1 activation in cervical epithelial cells stimulates growth of the intracellular pathogen Chlamydia trachomatis.

Ali A Abdul-Sater, Evonne Koo, Georg Häcker, David M Ojcius

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
6.5field-weighted citation impact, top 3% 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

71 citing papers in PubMed, 119 citations in OpenAlex.

  1. Trial
  2. Review
  3. Review
  4. Article
  5. Review
  6. Review
  7. Therapeutic Significance of NLRP3 Inflammasome in Cancer: Friend or Foe?International journal of molecular sciences · 2024
    Review
  8. Review
  9. Review
  10. Review
  11. Review
  12. Inflammasome Activation in Gingival Epithelial Cells.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  13. Article
  14. Focusing on the Cell Type Specific Regulatory Actions of NLRX1.International journal of molecular sciences · 2021
    Review
  15. Review
  16. Article
  17. Article
  18. Microbial cell (Graz, Austria) · 2019
    Article
  19. Article
  20. Article

11 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

4 authors at 2 institutions in 2 countries.

Ali A Abdul-SaterHealth Sciences Research Institute and School of Natural Sciences, University of California, Merced, California 95343, USA.
Evonne Koo
Georg Häcker
David M Ojcius
University of California, Merced · USUniversity of Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Inflammasomes have been extensively characterized in monocytes and macrophages, but not in epithelial cells, which are the preferred host cells for many pathogens. Here we show that cervical epithelial cells express a functional inflammasome. Infection of the cells by Chlamydia trachomatis leads to activation of caspase-1, through a process requiring the NOD-like receptor family member NLRP3 and the inflammasome adaptor protein ASC. Secretion of newly synthesized virulence proteins from the chlamydial vacuole through a type III secretion apparatus results in efflux of K(+) through glibenclamide-sensitive K(+) channels, which in turn stimulates production of reactive oxygen species. Elevated levels of reactive oxygen species are responsible for NLRP3-dependent caspase-1 activation in the infected cells. In monocytes and macrophages, caspase-1 is involved in processing and secretion of pro-inflammatory cytokines such as interleukin-1beta. However, in epithelial cells, which are not known to secrete large quantities of interleukin-1beta, caspase-1 has been shown previously to enhance lipid metabolism. Here we show that, in cervical epithelial cells, caspase-1 activation is required for optimal growth of the intracellular chlamydiae.

Indexed as

Amino Acid Chloromethyl KetonesBacterial ProteinsBlotting, WesternCarrier ProteinsCaspase 1Caspase InhibitorsChlamydia trachomatisEnzyme ActivationEpithelial CellsFemaleHeLa CellsHost-Pathogen InteractionsHumansInflammation MediatorsIon TransportMicroscopy, FluorescenceAmino Acid Chloromethyl KetonesBacterial Proteinsbenzyloxycarbonyltyrosyl-valyl-alanyl-aspartic acid fluoromethyl ketoneCarrier ProteinsCaspase 1Caspase InhibitorsInflammation MediatorsNLR Family, Pyrin Domain-Containing 3 ProteinNLRP3 protein, humanPotassiumReactive Oxygen Species

Identifiers

PMID19648107
PMCPMC2785367
OpenAlexW2028789055

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.