Evidence map›Paper›PMID 24478082›Full record

ArticleInfection and immunity2014

An Escherichia coli Nissle 1917 missense mutant colonizes the streptomycin-treated mouse intestine better than the wild type but is not a better probiotic.

Jimmy Adediran, Mary P Leatham-Jensen, Matthew E Mokszycki, Jakob Frimodt-Møller, Karen A Krogfelt, Krystyna Kazmierczak, Linda J Kenney, Tyrrell Conway, Paul S Cohen

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
7.4field-weighted citation impact, top 3% 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

31 citing papers in PubMed, 42 citations in OpenAlex.

  1. Review
  2. Article
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  4. An Engineered Variant ofACS synthetic biology · 2026
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  7. Nutrition ofEcoSal Plus · 2024
    Review
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  10. Sortase-encoding genes,Frontiers in microbiology · 2024
    Article
  11. Article
  12. Review
  13. Article
  14. ProbioticNutrients · 2021
    Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. A SimpleApplied and environmental microbiology · 2018
    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

9 authors at 4 institutions in 3 countries.

Jimmy AdediranDepartment of Cell and Molecular Biology, University of Rhode Island, Kingston, Rhode Island, USA.
Mary P Leatham-Jensen
Matthew E Mokszycki
Jakob Frimodt-Møller
Karen A Krogfelt
Krystyna Kazmierczak
Linda J Kenney
Tyrrell Conway
Paul S Cohen
University of Rhode Island · USJesse Brown VA Medical Center · USStatens Serum Institut · DKUniversity of Oklahoma · US

Funding

Symbiosis of E. coli and the Intestinal Microbiota in a Mouse ModelR01GM095370 · NIGMS · UNIVERSITY OF OKLAHOMA · PI CONWAY, TYRRELL · 2011 to 2014
$1.6M
OmpR and SsrB Regulation of Salmonella VirulenceI01BX000372 · VA · JESSE BROWN VA MEDICAL CENTER · PI KENNEY, LINDA J. · 2009 to 2017
–
BLRD VA I01 BX000372NIGMS NIH HHS GM095370NIGMS NIH HHS R01 GM095370
6 · The paper itself

Abstract

Previously we reported that the streptomycin-treated mouse intestine selected for two different Escherichia coli MG1655 mutants with improved colonizing ability: nonmotile E. coli MG1655 flhDC deletion mutants that grew 15% faster in vitro in mouse cecal mucus and motile E. coli MG1655 envZ missense mutants that grew slower in vitro in mouse cecal mucus yet were able to cocolonize with the faster-growing flhDC mutants. The E. coli MG1655 envZ gene encodes a histidine kinase that is a member of the envZ-ompR two-component signal transduction system, which regulates outer membrane protein profiles. In the present investigation, the envZP41L gene was transferred from the intestinally selected E. coli MG1655 mutant to E. coli Nissle 1917, a human probiotic strain used to treat gastrointestinal infections. Both the E. coli MG1655 and E. coli Nissle 1917 strains containing envZP41L produced more phosphorylated OmpR than their parents. The E. coli Nissle 1917 strain containing envZP41L also became more resistant to bile salts and colicin V and grew 50% slower in vitro in mucus and 15% to 30% slower on several sugars present in mucus, yet it was a 10-fold better colonizer than E. coli Nissle 1917. However, E. coli Nissle 1917 envZP41L was not better at preventing colonization by enterohemorrhagic E. coli EDL933. The data can be explained according to our "restaurant" hypothesis for commensal E. coli strains, i.e., that they colonize the intestine as sessile members of mixed biofilms, obtaining the sugars they need for growth locally, but compete for sugars with invading E. coli pathogens planktonically.

Indexed as

Mutation, MissenseProbioticsAnimalsBacterial Outer Membrane ProteinsBacterial ProteinsEscherichia coliEscherichia coli ProteinsIntestinesMaleMiceMultienzyme ComplexesTrans-ActivatorsBacterial Outer Membrane ProteinsBacterial ProteinsenvZ protein, E coliEscherichia coli ProteinsMultienzyme Complexesosmolarity response regulator proteinsTrans-Activators

Identifiers

PMID24478082
PMCPMC3911375
OpenAlexW2120883957

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.