Evidence map›Paper›PMID 25714717›Full record

ArticlemBio2015

Toxin synthesis by Clostridium difficile is regulated through quorum signaling.

Charles Darkoh, Herbert L DuPont, Steven J Norris, Heidi B Kaplan

Open access · goldAbstract read
In one paragraph

Article in mBio, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed
8.9field-weighted citation impact, top 1% 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

69 citing papers in PubMed, 116 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Biofilm Formation ofMicroorganisms · 2023
    Review
  11. Review
  12. Chemical and biomolecular insights into theIsrael journal of chemistry · 2023
    Article
  13. Regulatory transcription factors ofCritical reviews in microbiology · 2023
    Review
  14. Low-toxinEmerging microbes & infections · 2022
    Article
  15. Article
  16. Iron Effects onAntibiotics (Basel, Switzerland) · 2022
    Article
  17. Article
  18. Review
  19. Review
  20. Regulation of Clostridioides difficile toxin production.Current opinion in microbiology · 2022
    Review

9 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 1 country.

Charles DarkohThe University of Texas Health Science Center, School of Public Health, Division of Epidemiology, Human Genetics, and Environmental Sciences, Center For Infectious Diseases, Houston, Texas, USA Charles.darkoh@uth.tmc.edu.ORCID http://orcid.org/0000-0003-0063-7856
Herbert L DuPont
Steven J Norris
Heidi B KaplanThe University of Texas Medical School, Department of Microbiology and Molecular Genetics, Houston, Texas, USA.
Baylor College of Medicine · USThe University of Texas Health Science Center at Houston · US

Funding

Tissue Analysis & Molecular Imaging CoreP30DK056338 · NIDDK · BAYLOR COLLEGE OF MEDICINE · PI Geoffrey A Preidis · 2001 to 2026
$28.3M
Molecular Basis of Infectious Diseases Training GrantT32AI055449 · NIAID · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI LORENZ, MICHAEL C · 2005 to 2025
$2.6M
Targeting the Toxins: A Novel Non-Antimicrobial Approach to Combat Clostridium difficile infectionsR01AI116914 · NIAID · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI DARKOH, CHARLES · 2015 to 2019
$1.9M
NIAID NIH HHS R01 AI116914NIAID NIH HHS T32 AI055449NIAID NIH HHS T32AI055449NIDDK NIH HHS DK56338NIDDK NIH HHS P30 DK056338
6 · The paper itself

Abstract

unlabelledClostridium difficile infection (CDI) is dramatically increasing as a cause of antibiotic- and hospital-associated diarrhea worldwide. C. difficile, a multidrug-resistant pathogen, flourishes in the colon after the gut microbiota has been altered by antibiotic therapy. Consequently, it produces toxins A and B that directly cause disease. Despite the enormous public health problem posed by this pathogen, the molecular mechanisms that regulate production of the toxins, which are directly responsible for disease, remained largely unknown until now. Here, we show that C. difficile toxin synthesis is regulated by an accessory gene regulator quorum-signaling system, which is mediated through a small (<1,000-Da) thiolactone that can be detected directly in stools of CDI patients. These findings provide direct evidence of the mechanism of regulation of C. difficile toxin synthesis and offer exciting new avenues both for rapid detection of C. difficile infection and development of quorum-signaling-based non-antibiotic therapies to combat this life-threatening emerging pathogen. IMPORTANCE: Clostridium difficile infection (CDI) is the most common definable cause of hospital-acquired and antibiotic-associated diarrhea in the United States, with the total cost of treatment estimated between 1 and 4.8 billion U.S. dollars annually. C. difficile, a Gram-positive, spore-forming anaerobe, flourishes in the colon after the gut microbiota has been altered by antibiotic therapy. As a result, there is an urgent need for non-antibiotic CDI treatments that preserve the colonic microbiota. C. difficile produces toxins A and B, which are directly responsible for disease. Here, we report that C. difficile regulates its toxin synthesis by quorum signaling, in which a novel signaling peptide activates transcription of the disease-causing toxin genes. This finding provides new therapeutic targets to be harnessed for novel nonantibiotic therapy for C. difficile infections.

Indexed as

Gene Expression Regulation, BacterialQuorum SensingSignal TransductionBacterial ProteinsBacterial ToxinsClostridioides difficileEnterotoxinsBacterial ProteinsBacterial ToxinsEnterotoxinstcdA protein, Clostridium difficiletoxB protein, Clostridium difficile

Identifiers

PMID25714717
PMCPMC4453554
OpenAlexW2161658379

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.