Evidence map›Paper›PMID 19187284›Full record

ArticleEnvironmental microbiology2009

Synergistic role of curli and cellulose in cell adherence and biofilm formation of attaching and effacing Escherichia coli and identification of Fis as a negative regulator of curli.

Zeus Saldaña, Juan Xicohtencatl-Cortes, Fabiola Avelino, Alan D Phillips, James B Kaper, José L Puente, Jorge A Girón

Open access · greenAbstract read
In one paragraph

Article in Environmental microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 117 papers.

0numbers the graph read from it
0cells of the map it votes in
117citing papers in PubMed
11.2field-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

117 citing papers in PubMed, 220 citations in OpenAlex.

  1. Article
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  8. Serrapeptase EliminatesMicroorganisms · 2025
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  12. Antibiofilm Activities of Halogenated Pyrimidines Against EnterohemorrhagicInternational journal of molecular sciences · 2025
    Article
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  16. Gut microbes · 2023
    Article
  17. Article
  18. CsgI (YccT) Is a Novel Inhibitor of Curli Fimbriae Formation inInternational journal of molecular sciences · 2023
    Article
  19. Bacterial biofilms in the human body: prevalence and impacts on health and disease.Frontiers in cellular and infection microbiology · 2023
    Review
  20. Article

57 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

7 authors at 1 institution in 1 country.

Zeus SaldañaDepartment of Immunobiology, University of Arizona, 1501 N. Tucson, AZ 85724, USA.
Juan Xicohtencatl-Cortes
Fabiola Avelino
Alan D Phillips
James B Kaper
José L Puente
Jorge A Girón
Universidad Nacional Autónoma de México · MX

Funding

Molecular Genetics of Enteropathogenic E. Coli AdhesionR37AI021657 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI KAPER, JAMES B · 2004 to 2013
$4.8M
YagZ Pilus Adhesin of Attaching and Effacing E. coliR01AI066012 · NIAID · UNIVERSITY OF FLORIDA · PI GIRON, JORGE A · 2006 to 2010
$1.6M
MOLECULAR GENETICS OF ENTEROPATHOGENIC E COLI ADHESIONR01AI021657 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI KAPER, JAMES B · 1989 to 2003
$1.4M
Novel YcbQ Pili of Enterohemorrhagic E. coli O157:H7R01AI063211 · NIAID · UNIVERSITY OF ARIZONA · PI GIRON, JORGE A · 2004 to 2007
$901k
MOLECULAR GENETICS OF ENTEROPATHOGENIC E. COLI ADHESIONR22AI021657 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI KAPER, JAMES B · 1986 to 1991
–
NIAID NIH HHS AI063211NIAID NIH HHS AI066012NIAID NIH HHS AI21657NIAID NIH HHS R01 AI021657NIAID NIH HHS R01 AI063211NIAID NIH HHS R37 AI021657
6 · The paper itself

Abstract

Curli are adhesive fimbriae of Escherichia coli and Salmonella enterica. Expression of curli (csgA) and cellulose (bcsA) is co-activated by the transcriptional activator CsgD. In this study, we investigated the contribution of curli and cellulose to the adhesive properties of enterohaemorragic (EHEC) O157:H7 and enteropathogenic E. coli (EPEC) O127:H6. While single mutations in csgA, csgD or bcsA in EPEC and EHEC had no dramatic effect on cell adherence, double csgAbcsA mutants were significantly less adherent than the single mutants or wild-type strains to human colonic HT-29 epithelial cells or to cow colon tissue in vitro. Overexpression of csgD (carried on plasmid pCP994) in a csgD mutant, but not in the single csgA or bscA mutants, led to significant increase in adherence and biofilm formation in EPEC and EHEC, suggesting that synchronized over-production of curli and cellulose enhances bacterial adherence. In line with this finding, csgD transcription was activated significantly in the presence of cultured epithelial cells as compared with growth in tissue culture medium. Analysis of the influence of virulence and global regulators in the production of curli in EPEC identified Fis (factor for inversion stimulation) as a, heretofore unrecognized, negative transcriptional regulator of csgA expression. An EPEC E2348/69Deltafis produced abundant amounts of curli whereas a double fis/csgD mutant yielded no detectable curli production. Our data suggest that curli and cellulose act in concert to favour host colonization, biofilm formation and survival in different environments.

Indexed as

Bacterial AdhesionAnimalsBiofilmsCattleCell LineCelluloseEnteropathogenic Escherichia coliEpithelial CellsEscherichia coli O157Escherichia coli ProteinsFactor For Inversion Stimulation ProteinGene DeletionGene DosageGene Expression Regulation, BacterialHumansRepressor ProteinsCellulosecsgA protein, E coliCsgD protein, E coliEscherichia coli ProteinsFactor For Inversion Stimulation ProteinFis protein, E coliRepressor ProteinsTrans-Activators

Identifiers

PMID19187284
PMCPMC2672964
OpenAlexW2093674717

What OpenQuestion holds

Textmetadata
LicenceTDM
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.