Evidence map›Paper›PMID 26974849›Full record

ArticleThe Journal of general virology2016

Effects of egg-adaptation on receptor-binding and antigenic properties of recent influenza A (H3N2) vaccine viruses.

Lauren Parker, Stephen A Wharton, Stephen R Martin, Karen Cross, Yipu Lin, Yan Liu, Ten Feizi, Rodney S Daniels, John W McCauley

Open access · hybridAbstract read
In one paragraph

Article in The Journal of general virology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
6.9field-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

56 citing papers in PubMed, 80 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Article
  5. Interim 2025/26 influenza vaccine effectiveness estimates with immuno-epidemiological considerations for A(H3N2) subclade K protection, Canada, January 2026.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2026
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Review
  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

9 authors at 2 institutions in 1 country.

Lauren ParkerThe Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, London, NW7 1AA, UK.
Stephen A WhartonThe Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, London, NW7 1AA, UK.
Stephen R MartinThe Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, London, NW7 1AA, UK.
Karen CrossThe Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, London, NW7 1AA, UK.
Yipu LinThe Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, London, NW7 1AA, UK.
Yan LiuDepartment of Medicine, Glycosciences Laboratory, Imperial College London, Du Cane Road, London, W12 0NN, UK.
Ten FeiziDepartment of Medicine, Glycosciences Laboratory, Imperial College London, Du Cane Road, London, W12 0NN, UK.
Rodney S DanielsThe Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, London, NW7 1AA, UK.
John W McCauleyFormerly Divisions of Virology, MRC National Institute for Medical Research, The Ridgeway, Mill Hill, London, NW7 1AA, UK.
The Francis Crick Institute · GBImperial College London · GB

Funding

Medical Research Council MC_U117512723Medical Research Council MC_U117585868Wellcome TrustWellcome Trust WT099197MA
6 · The paper itself

Abstract

Influenza A virus (subtype H3N2) causes seasonal human influenza and is included as a component of influenza vaccines. The majority of vaccine viruses are isolated and propagated in eggs, which commonly results in amino acid substitutions in the haemagglutinin (HA) glycoprotein. These substitutions can affect virus receptor-binding and alter virus antigenicity, thereby, obfuscating the choice of egg-propagated viruses for development into candidate vaccine viruses. To evaluate the effects of egg-adaptive substitutions seen in H3N2 vaccine viruses on sialic acid receptor-binding, we carried out quantitative measurement of virus receptor-binding using surface biolayer interferometry with haemagglutination inhibition (HI) assays to correlate changes in receptor avidity with antigenic properties. Included in these studies was a panel of H3N2 viruses generated by reverse genetics containing substitutions seen in recent egg-propagated vaccine viruses and corresponding cell culture-propagated wild-type viruses. These assays provide a quantitative approach to investigating the importance of individual amino acid substitutions in influenza receptor-binding. Results show that viruses with egg-adaptive HA substitutions R156Q, S219Y, and I226N, have increased binding avidity to α2,3-linked receptor-analogues and decreased binding avidity to α2,6-linked receptor-analogues. No measurable binding was detected for the viruses with amino acid substitution combination 156Q+219Y and receptor-binding increased in viruses where egg-adaptation mutations were introduced into cell culture-propagated virus. Substitutions at positions 156 and 190 appeared to be primarily responsible for low reactivity in HI assays with post-infection ferret antisera raised against 2012-2013 season H3N2 viruses. Egg-adaptive substitutions at position 186 caused substantial differences in binding avidity with an insignificant effect on antigenicity.

Indexed as

Adaptation, BiologicalVirus AttachmentVirus CultivationAmino Acid SubstitutionAnimalsAntibodies, ViralChickensFerretsHemagglutination Inhibition TestsHemagglutinin Glycoproteins, Influenza VirusHumansInfluenza A Virus, H3N2 SubtypeInfluenza VaccinesOvumSialic AcidsAntibodies, ViralHemagglutinin Glycoproteins, Influenza VirusInfluenza VaccinesSialic Acids

Identifiers

PMID26974849
PMCPMC5394856
OpenAlexW2297126587

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.