Evidence map›Paper›PMID 24523886›Full record

ArticlePloS one2014

MVA vectors expressing conserved influenza proteins protect mice against lethal challenge with H5N1, H9N2 and H7N1 viruses.

Annett Hessel, Helga Savidis-Dacho, Sogue Coulibaly, Daniel Portsmouth, Thomas R Kreil, Brian A Crowe, Michael G Schwendinger, Andreas Pilz, P Noel Barrett, Falko G Falkner and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
6.6field-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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 63 citations in OpenAlex.

  1. Viral vector-based influenza vaccines.Human vaccines & immunotherapeutics · 2016
    Pooled it
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  3. Review
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  13. Harnessing Cross-Reactive CD8Viral immunology · 2020
    Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. The Quest for a Truly Universal Influenza Vaccine.Frontiers in cellular and infection microbiology · 2019
    Review
  19. Article
  20. 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

11 authors at 1 institution in 1 country.

Annett HesselVaccine R&D, Baxter Bioscience, Orth/Donau, Austria.
Helga Savidis-DachoPharmacology, Baxter Bioscience, Orth/Donau, Austria.
Sogue CoulibalyPharmacology, Baxter Bioscience, Orth/Donau, Austria.
Daniel PortsmouthVaccine R&D, Baxter Bioscience, Orth/Donau, Austria.
Thomas R KreilGlobal Pathogen Safety, Baxter Bioscience, Vienna, Austria.
Brian A CroweVaccine R&D, Baxter Bioscience, Orth/Donau, Austria.
Michael G SchwendingerVaccine R&D, Baxter Bioscience, Orth/Donau, Austria.
Andreas PilzVaccine R&D, Baxter Bioscience, Orth/Donau, Austria.
P Noel BarrettVaccine R&D, Baxter Bioscience, Orth/Donau, Austria.
Falko G FalknerBiologicals R&D, Baxter Bioscience, Orth/Donau, Austria.
Birgit SchäferVaccine R&D, Baxter Bioscience, Orth/Donau, Austria.
Baxter (Austria) · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe availability of a universal influenza vaccine able to induce broad cross-reactive immune responses against diverse influenza viruses would provide an alternative to currently available strain-specific vaccines. We evaluated the ability of vectors based on modified vaccinia virus Ankara (MVA) expressing conserved influenza proteins to protect mice against lethal challenge with multiple influenza subtypes.

methodsMice were immunized with MVA vectors expressing H5N1-derived nucleoprotein (NP), the stem region of hemagglutinin (HA), matrix proteins 1 and 2 (M1 and M2), the viral polymerase basic protein 1 (PB1), or the HA stem fused to a quadrivalent matrix protein 2 extracellular domain (M2e). Immunized mice were challenged with lethal doses of H5N1, H7N1 or H9N2 virus and monitored for disease symptoms and weight loss. To investigate the influence of previous exposure to influenza virus on protective immune responses induced by conserved influenza proteins, mice were infected with pandemic H1N1 virus (H1N1pdm09) prior to immunization and subsequently challenged with H5N1 virus. Antibody and T cell responses were assessed by ELISA and flow cytometry, respectively.

resultsMVA vectors expressing NP alone, or co-expressed with other conserved influenza proteins, protected mice against lethal challenge with H5N1, H7N1 or H9N2 virus. Pre-exposure to H1N1pdm09 increased protective efficacy against lethal H5N1 challenge. None of the other conserved influenza proteins provided significant levels of protection against lethal challenge. NP-expressing vectors induced high numbers of influenza-specific CD4(+) and CD8(+) T cells and high titer influenza-specific antibody responses. Higher influenza-specific CD4(+) T cell responses and NP-specific CD8(+) T cell responses were associated with increased protective efficacy.

conclusionsMVA vectors expressing influenza NP protect mice against lethal challenge with H5N1, H7N1 and H9N2 viruses by a mechanism involving influenza-specific CD4(+) and CD8(+) T cell responses.

Indexed as

AnimalsEnzyme-Linked Immunosorbent AssayFemaleInfluenza A Virus, H5N1 SubtypeInfluenza A Virus, H7N1 SubtypeInfluenza A Virus, H9N2 SubtypeInfluenza VaccinesMiceMice, Inbred BALB COrthomyxoviridae InfectionsT-LymphocytesVaccinia virusInfluenza Vaccines

Identifiers

PMID24523886
PMCPMC3921149
OpenAlexW2037324016

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.