Evidence map›Paper›PMID 33547340›Full record

ArticleScientific reports2021

Extracellular DNA, cell surface proteins and c-di-GMP promote biofilm formation in Clostridioides difficile.

Lisa F Dawson, Johann Peltier, Catherine L Hall, Mark A Harrison, Maria Derakhshan, Helen A Shaw, Neil F Fairweather, Brendan W Wren

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
3.1field-weighted citation impact, top 7% 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

34 citing papers in PubMed, 56 citations in OpenAlex.

  1. Open forum infectious diseases · 2026
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  8. Review
  9. Article
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  11. Genomic study of EuropeanMicrobial genomics · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Clostridioides difficile Biofilm.Advances in experimental medicine and biology · 2024
    Article
  16. Review
  17. Biofilm Formation ofMicroorganisms · 2023
    Review
  18. Article
  19. Article
  20. 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

8 authors at 3 institutions in 2 countries.

Lisa F DawsonDepartment of Infection Biology, London School of Hygiene and Tropical Medicine, London, UK. lisa.dawson@lshtm.ac.uk.
Johann PeltierDepartment of Infection Biology, London School of Hygiene and Tropical Medicine, London, UK.
Catherine L HallDepartment of Infection Biology, London School of Hygiene and Tropical Medicine, London, UK.
Mark A HarrisonDepartment of Infection Biology, London School of Hygiene and Tropical Medicine, London, UK.
Maria DerakhshanDepartment of Infection Biology, London School of Hygiene and Tropical Medicine, London, UK.
Helen A ShawDepartment of Infection Biology, London School of Hygiene and Tropical Medicine, London, UK.
Neil F FairweatherDepartment of Life Sciences, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.
Brendan W WrenDepartment of Infection Biology, London School of Hygiene and Tropical Medicine, London, UK.
London School of Hygiene & Tropical Medicine · GBCentre National de la Recherche Scientifique · FRImperial College London · GB

Funding

Medical Research Council G1000214Medical Research Council MR/K000551/1Medical Research Council MR/N013638/1Wellcome TrustWellcome Trust 086418/ZWellcome Trust 105609/Z/14/Z
6 · The paper itself

Abstract

Clostridioides difficile is the leading cause of nosocomial antibiotic-associated diarrhoea worldwide, yet there is little insight into intestinal tract colonisation and relapse. In many bacterial species, the secondary messenger cyclic-di-GMP mediates switching between planktonic phase, sessile growth and biofilm formation. We demonstrate that c-di-GMP promotes early biofilm formation in C. difficile and that four cell surface proteins contribute to biofilm formation, including two c-di-GMP regulated; CD2831 and CD3246, and two c-di-GMP-independent; CD3392 and CD0183. We demonstrate that C. difficile biofilms are composed of extracellular DNA (eDNA), cell surface and intracellular proteins, which form a protective matrix around C. difficile vegetative cells and spores, as shown by a protective effect against the antibiotic vancomycin. We demonstrate a positive correlation between biofilm biomass, sporulation frequency and eDNA abundance in all five C. difficile lineages. Strains 630 (RT012), CD305 (RT023) and M120 (RT078) contain significantly more eDNA in their biofilm matrix than strains R20291 (RT027) and M68 (RT017). DNase has a profound effect on biofilm integrity, resulting in complete disassembly of the biofilm matrix, inhibition of biofilm formation and reduced spore germination. The addition of exogenous DNase could be exploited in treatment of C. difficile infection and relapse, to improve antibiotic efficacy.

Indexed as

BiofilmsBacterial ProteinsClostridioides difficileClostridium InfectionsCyclic GMPDNA, BacterialHumansBacterial Proteinsbis(3',5')-cyclic diguanylic acidCyclic GMPDNA, Bacterial

Identifiers

PMID33547340
PMCPMC7865049
OpenAlexW3127182623

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.