Evidence map›Paper›PMID 31146794›Full record

ArticleMicrobiome2019

Nasal commensal Staphylococcus epidermidis enhances interferon-λ-dependent immunity against influenza virus.

Hyun Jik Kim, Ara Jo, Yung Jin Jeon, Sujin An, Kang-Mu Lee, Sang Sun Yoon, Jae Young Choi

Open access · goldAbstract read
In one paragraph

Article in Microbiome, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 6% 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

66 citing papers in PubMed, 1 synthesis or guideline pooled it, 96 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Observational
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review

6 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

7 authors at 4 institutions in 1 country.

Hyun Jik KimDepartment of Otorhinolaryngology, Seoul National University College of Medicine, Seoul, Republic of Korea.
Ara JoDepartment of Otorhinolaryngology, Seoul National University College of Medicine, Seoul, Republic of Korea.
Yung Jin JeonDepartment of Otorhinolaryngology, Gyeongsang National University Hospital, Jinju, Republic of Korea.
Sujin AnDepartment of Otorhinolaryngology, Seoul National University College of Medicine, Seoul, Republic of Korea.
Kang-Mu LeeDepartment of Microbiology and Immunology, Brain Korea 21 PLUS Project for Medical Sciences, Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
Sang Sun YoonDepartment of Microbiology and Immunology, Brain Korea 21 PLUS Project for Medical Sciences, Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea. sangsun_yoon@yuhs.ac.
Jae Young ChoiDepartment of Otorhinolaryngology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea. jychoi@yuhs.ac.
Yonsei University · KRSeoul National University · KRGyeongsang National University Hospital · KRSeoul National University Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStaphylococcus epidermidis is one of the most abundant colonizers of healthy human mucosa including that in the respiratory tract. As the respiratory microbiome has been linked to host immune responses, this study sought to determine the role of nasal mucosa-associated S. epidermidis in innate immune responses against the influenza A virus (IAV). S. epidermidis strains were isolated from nasal mucus samples of healthy individuals. The effects of these mucosa-derived commensal strains on interferon (IFN)-dependent innate immunity and IAV infection dynamics were tested in vitro using normal human nasal epithelial (NHNE) cells and human turbinate mucosa. The effects of S. epidermidis on antiviral immunity were also tested in vivo using an acute IAV infection mouse model.

resultsExposure of NHNE cells to nasal mucosa-derived S. epidermidis increased IFN-λ mRNA and secreted protein levels in the absence of viral stimulation. In the context of IAV infection, NHNE exposure to S. epidermidis prevented an increase in the viral burden, as revealed by IAV PA mRNA abundance, IAV nucleoprotein levels, and viral titers. S. epidermidis also enhanced transcription of IFN-stimulated genes independently of Toll-like receptor 2 and further induced IFN-λ production in IAV-infected cells by promoting phosphorylation of interferon regulatory factor 7. In a murine infection model, S. epidermidis prevented the spread of IAV to the lungs by stimulating IFN-λ innate immunity and suppressing IAV replication in the nasal mucosa.

conclusionThe human nasal commensal S. epidermidis mediates front-line antiviral protection against IAV infection through modulation of IFN-λ-dependent innate immune mechanisms in the nasal mucosa, thereby demonstrating the role of host-bacterial commensalism in shaping human antiviral responses.

Indexed as

SymbiosisAdultAnimalsCells, CulturedHost-Pathogen InteractionsHumansImmunity, InnateInfluenza, HumanInterferonsMaleMiceMice, Inbred C57BLNasal MucosaNoseOrthomyxoviridae InfectionsStaphylococcus epidermidisInterferonsInfluenza A virusInnate immunityInterferonMicrobiomeNasal commensal

Identifiers

PMID31146794
PMCPMC6542144
OpenAlexW2946915008

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.