Evidence map›Paper›PMID 21778203›Full record

ArticleMicrobiology (Reading, England)2011

Characterization of IcmF of the type VI secretion system in an avian pathogenic Escherichia coli (APEC) strain.

Fernanda de Pace, Jacqueline Boldrin de Paiva, Gerson Nakazato, Marcelo Lancellotti, Marcelo Palma Sircili, Eliana Guedes Stehling, Wanderley Dias da Silveira, Vanessa Sperandio

Open access · greenAbstract read
In one paragraph

Article in Microbiology (Reading, England), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

43 citing papers in PubMed, 84 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. The Role ofFoods (Basel, Switzerland) · 2022
    Article
  8. Article
  9. Article
  10. Avian PathogenicPathogens (Basel, Switzerland) · 2021
    Review
  11. International journal of molecular sciences · 2021
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Two Type VI Secretion Systems ofFrontiers in microbiology · 2020
    Article
  17. Article
  18. Type VI Secretion System in PathogenicFrontiers in microbiology · 2019
    Review
  19. Review
  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 4 institutions in 2 countries.

Fernanda de PaceDepartment of Genetics, Evolution and Bioagents, Institute of Biology, State University of Campinas - Unicamp, Campinas, SP CP6109, Brazil.
Jacqueline Boldrin de PaivaDepartment of Genetics, Evolution and Bioagents, Institute of Biology, State University of Campinas - Unicamp, Campinas, SP CP6109, Brazil.
Gerson NakazatoState University of Londrina - UEL, Londrina, PR, Brazil.
Marcelo LancellottiDepartment of Biochemistry, Institute of Biology, State University of Campinas - Unicamp, Campinas, SP CP6109, Brazil.
Marcelo Palma SirciliLaboratory of Bacteriology, Butantan Institute, São Paulo, CP 05503-900, Brazil.
Eliana Guedes StehlingDepartment of Genetics, Evolution and Bioagents, Institute of Biology, State University of Campinas - Unicamp, Campinas, SP CP6109, Brazil.
Wanderley Dias da SilveiraDepartment of Genetics, Evolution and Bioagents, Institute of Biology, State University of Campinas - Unicamp, Campinas, SP CP6109, Brazil.
Vanessa SperandioUniversity of Texas Southwestern Medical Center, Dallas, TX 75390-9048, USA.
Universidade Estadual de Campinas (UNICAMP) · BRInstituto Butantan · BRThe University of Texas Southwestern Medical Center · USUniversidade Estadual de Londrina · BR

Funding

Quorum sensing regulation of EHEC virulence genesR01AI053067 · NIAID · UT SOUTHWESTERN MEDICAL CENTER · PI SPERANDIO, VANESSA · 2003 to 2017
$6.3M
Quorum Sensing Regulation of EHEC Virulence GenesR37AI053067 · NIAID · UT SOUTHWESTERN MEDICAL CENTER · PI VANESSA SPERANDIO · 2018 to 2026
$5.3M
NIAID NIH HHS AI053067NIAID NIH HHS R01 AI053067NIAID NIH HHS R37 AI053067
6 · The paper itself

Abstract

The intracellular multiplication factor (IcmF) protein is a component of the recently described type VI secretion system (T6SS). IcmF has been shown to be required for intra-macrophage replication and inhibition of phagosome-lysosome fusion in Legionella pneumophila. In Vibrio cholerae it is involved in motility, adherence and conjugation. Given that we previously reported that two T6SS genes (hcp and clpV) contribute to the pathogenesis of a septicaemic strain (SEPT362) of avian pathogenic Escherichia coli (APEC), we investigated the function of IcmF in this strain. Further elucidation of the virulence mechanisms of APEC is important because this pathogen is responsible for financial losses in the poultry industry, and is closely related to human extraintestinal pathogenic E. coli (ExPEC) strains, representing a potential zoonotic risk, as well as serving as a reservoir of virulence genes. Here we show that an APEC icmF mutant has decreased adherence to and invasion of epithelial cells, as well as decreased intra-macrophage survival. The icmF mutant is also defective for biofilm formation on abiotic surfaces. Additionally, expression of the flagella operon is decreased in the icmF mutant, leading to decreased motility. The combination of these phenotypes culminates in this mutant being altered for infection in chicks. These results suggest that IcmF in APEC may play a role in disease, and potentially also in the epidemiological spread of this pathogen through enhancement of biofilm formation.

Indexed as

Bacterial Secretion SystemsAnimalsBacterial AdhesionBiofilmsCell LineChickensEscherichia coliEscherichia coli InfectionsEscherichia coli ProteinsHumansPoultry DiseasesVirulenceBacterial Secretion SystemsEscherichia coli Proteins

Identifiers

PMID21778203
PMCPMC3353391
OpenAlexW2133249659

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.