Evidence map›Paper›PMID 28249045›Full record

ArticlePloS one2017

Pili-like proteins of Akkermansia muciniphila modulate host immune responses and gut barrier function.

Noora Ottman, Justus Reunanen, Marjolein Meijerink, Taija E Pietilä, Veera Kainulainen, Judith Klievink, Laura Huuskonen, Steven Aalvink, Mikael Skurnik, Sjef Boeren and 6 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 324 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
324citing papers in PubMed, 1 pooled it
14.9field-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

324 citing papers in PubMed, 1 synthesis or guideline pooled it, 498 citations in OpenAlex.

  1. Nutrients · 2024
    Pooled it
  2. Effect of pasteurizedGut microbes · 2026
    Trial
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  18. mBio · 2026
    Article
  19. Review
  20. Unveiling the Molecular Repertoire ofJournal of microbiology and biotechnology · 2026
    Review

264 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

16 authors at 3 institutions in 3 countries.

Noora OttmanLaboratory of Microbiology, Wageningen University, Wageningen, The Netherlands.ORCID http://orcid.org/0000-0001-5011-9294
Justus ReunanenCancer and Translational Medicine Research Unit, Biocenter Oulu and Faculty of Medicine, University of Oulu, Oulu, Finland.
Marjolein MeijerinkHost-Microbe Interactomics, Animal Sciences, Wageningen University, Wageningen, The Netherlands.
Taija E PietiläDepartment of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
Veera KainulainenPharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
Judith KlievinkDepartment of Bacteriology and Immunology, and Research Programs Unit, Immunobiology, University of Helsinki, Helsinki, Finland.
Laura HuuskonenDepartment of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
Steven AalvinkLaboratory of Microbiology, Wageningen University, Wageningen, The Netherlands.
Mikael SkurnikDepartment of Bacteriology and Immunology, and Research Programs Unit, Immunobiology, University of Helsinki, Helsinki, Finland.
Sjef BoerenLaboratory of Biochemistry, Wageningen University, Wageningen, The Netherlands.
Reetta SatokariDepartment of Bacteriology and Immunology, and Research Programs Unit, Immunobiology, University of Helsinki, Helsinki, Finland.
Annick MercenierHost-Microbe Interactomics, Animal Sciences, Wageningen University, Wageningen, The Netherlands.
Airi PalvaDepartment of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
Hauke SmidtLaboratory of Microbiology, Wageningen University, Wageningen, The Netherlands.
Willem M de VosLaboratory of Microbiology, Wageningen University, Wageningen, The Netherlands.
Clara BelzerLaboratory of Microbiology, Wageningen University, Wageningen, The Netherlands.
University of Helsinki · FIWageningen University & Research · NLUniversity of Oulu · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gut barrier function is key in maintaining a balanced response between the host and its microbiome. The microbiota can modulate changes in gut barrier as well as metabolic and inflammatory responses. This highly complex system involves numerous microbiota-derived factors. The gut symbiont Akkermansia muciniphila is positively correlated with a lean phenotype, reduced body weight gain, amelioration of metabolic responses and restoration of gut barrier function by modulation of mucus layer thickness. However, the molecular mechanisms behind its metabolic and immunological regulatory properties are unexplored. Herein, we identify a highly abundant outer membrane pili-like protein of A. muciniphila MucT that is directly involved in immune regulation and enhancement of trans-epithelial resistance. The purified Amuc_1100 protein and enrichments containing all its associated proteins induced production of specific cytokines through activation of Toll-like receptor (TLR) 2 and TLR4. This mainly leads to high levels of IL-10 similar to those induced by the other beneficial immune suppressive microorganisms such as Faecalibacterium prausnitzii A2-165 and Lactobacillus plantarum WCFS1. Together these results indicate that outer membrane protein composition and particularly the newly identified highly abundant pili-like protein Amuc_1100 of A. muciniphila are involved in host immunological homeostasis at the gut mucosa, and improvement of gut barrier function.

Indexed as

Bacterial Outer Membrane ProteinsCell LineCells, CulturedCytokinesGastrointestinal MicrobiomeHumansIntestinal MucosaToll-Like Receptor 2Toll-Like Receptor 4VerrucomicrobiaBacterial Outer Membrane ProteinsCytokinesTLR2 protein, humanTLR4 protein, humanToll-Like Receptor 2Toll-Like Receptor 4

Identifiers

PMID28249045
PMCPMC5332112
OpenAlexW2594894350

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.