Evidence map›Paper›PMID 25824837›Full record

ArticleInfection and immunity2015

The Cpx system regulates virulence gene expression in Vibrio cholerae.

Nicole Acosta, Stefan Pukatzki, Tracy L Raivio

Abstract read
In one paragraph

Article in Infection and immunity, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
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

22 citing papers in PubMed.

  1. Review
  2. Article
  3. ThemBio · 2026
    Article
  4. Article
  5. Anti-infective compounds forSustainable microbiology · 2026
    Review
  6. Review
  7. Cpx-signalling innpj antimicrobials and resistance · 2024
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. On or Off: Life-Changing Decisions Made byInfectious microbes & diseases · 2020
    Review
  15. Article
  16. Article
  17. Virulence Regulation and Innate Host Response in the Pathogenicity ofFrontiers in cellular and infection microbiology · 2020
    Review
  18. Review
  19. Article
  20. The CpxA/CpxR Two-Component System Affects Biofilm Formation and Virulence inFrontiers in cellular and infection microbiology · 2018
    Article
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

3 authors.

Nicole AcostaDepartment of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
Stefan PukatzkiDepartment of Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada.
Tracy L RaivioDepartment of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada traivio@ualberta.ca.

Funding

Canadian Institutes of Health Research MOP 199847Canadian Institutes of Health Research MOP-84473
6 · The paper itself

Abstract

Bacteria possess signal transduction pathways capable of sensing and responding to a wide variety of signals. The Cpx envelope stress response, composed of the sensor histidine kinase CpxA and the response regulator CpxR, senses and mediates adaptation to insults to the bacterial envelope. The Cpx response has been implicated in the regulation of a number of envelope-localized virulence determinants across bacterial species. Here, we show that activation of the Cpx pathway in Vibrio cholerae El Tor strain C6706 leads to a decrease in expression of the major virulence factors in this organism, cholera toxin (CT) and the toxin-coregulated pilus (TCP). Our results indicate that this occurs through the repression of production of the ToxT regulator and an additional upstream transcription factor, TcpP. The effect of the Cpx response on CT and TCP expression is mostly abrogated in a cyclic AMP receptor protein (CRP) mutant, although expression of the crp gene is unaltered. Since TcpP production is controlled by CRP, our data suggest a model whereby the Cpx response affects CRP function, which leads to diminished TcpP, ToxT, CT, and TCP production.

Indexed as

Bacterial ProteinsDown-RegulationGene DeletionGene Expression Regulation, BacterialGene Expression Regulation, EnzymologicOperonPromoter Regions, GeneticProtein KinasesVibrio choleraeVirulenceBacterial ProteinsCpxR protein, BacteriaProtein Kinases

Identifiers

PMID25824837
PMCPMC4432731

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.