Evidence map›Paper›PMID 24508234›Full record

ArticleImmunity2014

The cytokine IL-22 promotes pathogen colonization by suppressing related commensal bacteria.

Judith Behnsen, Stefan Jellbauer, Christina P Wong, Robert A Edwards, Michael D George, Wenjun Ouyang, Manuela Raffatellu

Open access · bronzeAbstract read
In one paragraph

Article in Immunity, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 192 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
192citing papers in PubMed, 1 pooled it
18.3field-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

192 citing papers in PubMed, 1 synthesis or guideline pooled it, 281 citations in OpenAlex.

  1. Mucosal immune response in biology, disease prevention and treatment.Signal transduction and targeted therapy · 2025
    Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Infection strategies ofGut microbes reports · 2026
    Review
  12. Review
  13. Article
  14. Article
  15. Cecal Metabolome Profiles of Turkey Poults in Response toAnimals : an open access journal from MDPI · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review

132 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Judith BehnsenDepartment of Microbiology, University of California, Irvine, Irvine, CA 92697, USA; Institute for Immunology, University of California, Irvine, Irvine, CA 92697, USA.
Stefan JellbauerDepartment of Microbiology, University of California, Irvine, Irvine, CA 92697, USA; Institute for Immunology, University of California, Irvine, Irvine, CA 92697, USA.
Christina P WongDepartment of Microbiology, University of California, Irvine, Irvine, CA 92697, USA; Institute for Immunology, University of California, Irvine, Irvine, CA 92697, USA.
Robert A EdwardsInstitute for Immunology, University of California, Irvine, Irvine, CA 92697, USA; Department of Pathology and Laboratory Medicine, University of California, Irvine, Irvine, CA 92697, USA.
Michael D GeorgeDepartment of Medical Microbiology and Immunology, School of Medicine, University of California, Davis, CA 95616, USA.
Wenjun OuyangDepartment of Immunology, Genentech, South San Francisco, CA 94080, USA.
Manuela RaffatelluDepartment of Microbiology, University of California, Irvine, Irvine, CA 92697, USA; Institute for Immunology, University of California, Irvine, Irvine, CA 92697, USA. Electronic address: manuelar@uci.edu.
University of California, Irvine · USUniversity of California, Davis · US

Funding

Vaccines and Diagnostics TrialsU54AI065359 · NIAID · UNIVERSITY OF CALIFORNIA-IRVINE · PI BARBOUR, ALAN G. · 2005 to 2013
$88.8M
Mucosal barrier function during Salmonella infectionR01AI083663 · NIAID · UNIVERSITY OF CALIFORNIA-IRVINE · PI RAFFATELLU, MANUELA · 2010 to 2014
$1.9M
Metal withholding responses in the gut mucosaR21AI083619 · NIAID · UNIVERSITY OF CALIFORNIA-IRVINE · PI RAFFATELLU, MANUELA · 2009 to 2010
$419k
NIAID NIH HHS AI083663NIAID NIH HHS R01 AI083663NIAID NIH HHS R21 AI083619NIAID NIH HHS U54 AI065359NIAID NIH HHS U54AI065359
6 · The paper itself

Abstract

Interleukin-22 (IL-22) is highly induced in response to infections with a variety of pathogens, and its main functions are considered to be tissue repair and host defense at mucosal surfaces. Here we showed that IL-22 has a unique role during infection in that its expression suppressed the intestinal microbiota and enhanced the colonization of a pathogen. IL-22 induced the expression of antimicrobial proteins, including lipocalin-2 and calprotectin, which sequester essential metal ions from microbes. Because Salmonella enterica ser. Typhimurium can overcome metal ion starvation mediated by lipocalin-2 and calprotectin via alternative pathways, IL-22 boosted its colonization of the inflamed intestine by suppressing commensal Enterobacteriaceae, which are susceptible to the antimicrobial proteins. Thus, IL-22 tipped the balance between pathogenic and commensal bacteria in favor of a pathogen. Taken together, IL-22 induction can be exploited by pathogens to suppress the growth of their closest competitors, thereby enhancing pathogen colonization of mucosal surfaces.

Indexed as

Host-Pathogen InteractionsAnimalsCytokinesInterleukin-22InterleukinsIntestinesMiceMice, Inbred C57BLModels, BiologicalReal-Time Polymerase Chain ReactionSalmonella InfectionsSymbiosisUp-RegulationCytokinesInterleukin-22Interleukins

Identifiers

PMID24508234
PMCPMC3964146
OpenAlexW2094129900

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.