Evidence map›Paper›PMID 21219446›Full record

ArticleFEMS immunology and medical microbiology2011

Shigella enterotoxin-2 is a type III effector that participates in Shigella-induced interleukin 8 secretion by epithelial cells.

Mauricio J Farfán, Cecilia S Toro, Eileen M Barry, James P Nataro

Open access · bronzeAbstract read
In one paragraph

Article in FEMS immunology and medical microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.1field-weighted citation impact, top 15% 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

24 citing papers in PubMed, 58 citations in OpenAlex.

  1. Trial
  2. Molecular Mechanisms ofInternational journal of molecular sciences · 2023
    Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Plasmid-Mediated Quinolone Resistance inFrontiers in microbiology · 2018
    Article
  11. Profiling of Virulence-associated Factors inOsong public health and research perspectives · 2017
    Article
  12. How Do the Virulence Factors ofFrontiers in cellular and infection microbiology · 2017
    Review
  13. Article
  14. Article
  15. Occurrence of genes encoding enterotoxins in uropathogenic Escherichia coli isolates.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2015
    Article
  16. Current tropical medicine reports · 2014
    Article
  17. Article
  18. Review
  19. Review
  20. Progress and pitfalls in Shigella vaccine research.Nature reviews. Gastroenterology & hepatology · 2013
    Review
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 2 countries.

Mauricio J FarfánCentro de Estudios Moleculares, Departamento de Pediatría, Hospital Luis Calvo Mackennna, Facultad de Medicina, Universidad de Chile, Santiago, Chile. mfarfan@med.uchile.cl
Cecilia S Toro
Eileen M Barry
James P Nataro
University of Maryland, Baltimore · USUniversity of Chile · CL

Funding

Virulence in Enteroaggregative Escherichia coliR01AI033096 · NIAID · UNIVERSITY OF VIRGINIA · PI NATARO, JAMES P. · 1996 to 2014
$6.6M
Shigella dysenteriae vaccine constructionR01AI059223 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI BARRY, EILEEN M. · 2006 to 2009
$1.4M
ADHERENCE IN ENTEROAGGREGATIVE E. COLIR29AI033096 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI NATARO, JAMES P. · 1992 to 1996
–
NIAID NIH HHS AI033096NIAID NIH HHS AI059223NIAID NIH HHS R01 AI033096NIAID NIH HHS R01 AI059223
6 · The paper itself

Abstract

We have previously described a protein termed Shigella enterotoxin 2 (ShET-2), which induces rises in short-circuit current in rabbit ileum mounted in the Ussing chamber. Published reports have postulated that ShET-2 may be secreted by the Shigella type III secretion system (T3SS). In this study, we show that ShET-2 secretion into the extracellular space requires the T3SS in Shigella flexneri 2a strain 2457T and a ShET-2-TEM fusion was translocated into epithelial cells in a T3SS-dependent manner. The ShET-2 gene, sen, is encoded downstream of the ospC1 gene of S. flexneri, and we show that sen is cotranscribed with this T3SS-secreted product. Considering that T3SS effectors have diverse roles in Shigella infection and that vaccine constructs lacking ShET-2 are attenuated in volunteers, we asked whether ShET-2 has a function other than its enterotoxic activity. We constructed a ShET-2 mutant in 2457T and tested its effect on epithelial cell invasion, plaque formation, guinea pig keratoconjunctivitis and interleukin 8 (IL-8) secretion from infected monolayers. Although other phenotypes were not different compared with the wild-type parent, we found that HEp-2 and T84 cells infected with the ShET-2 mutant exhibited significantly reduced IL-8 secretion into the basolateral compartment, suggesting that ShET-2 might participate in the Shigella-induced inflammation of epithelial cells.

Indexed as

AnimalsCell LineEnterotoxinsEpithelial CellsHumansInterleukin-8Protein TransportShigella flexneriEnterotoxinsInterleukin-8

Identifiers

PMID21219446
PMCPMC3055916
OpenAlexW1791534875

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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.