ArticleJournal of virology2020
L226Q Mutation on Influenza H7N9 Virus Hemagglutinin Increases Receptor-Binding Avidity and Leads to Biased Antigenicity Evaluation.
Article in Journal of virology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 20 citations in OpenAlex.
- Neutralizing and protective monoclonal antibodies identify antigenic sites in influenza H7 hemagglutinin and select for amino acid substitutions rarely observed at the global level.Microbiology spectrum · 2026Article
- Comparative Immunogenicity of Inactivated H7N9 Avian Influenza Vaccines with Different Internal Gene Backbones.Microorganisms · 2026Article
- MF59-adjuvanted A/Astrakhan influenza vaccine induces cross-neutralizing H5N1 antibodies in ferrets against circulating clade 2.3.4.4b viruses.NPJ vaccines · 2026Article
- Genome-Wide Codon Reprogramming Enables a Multifactorially Attenuated Influenza Vaccine with Broad Cross-Protection.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Cathepsin S contributes to influenza-induced lung injury by driving inflammation, promoting apoptosis, and disrupting epithelial barrier integrity.Microbiology spectrum · 2026Article
- Deep generative optimization of mRNA codon sequences for enhanced mRNA translation and therapeutic efficacy.Nature communications · 2025Article
- Pan-H7 influenza human antibody virus neutralization depends on avidity and steric hindrance.JCI insight · 2025Article
- R229I substitution from oseltamivir induction in HA1 region significantly increased the fitness of a H7N9 virus bearing NA 292K.Emerging microbes & infections · 2024Article
- Article
- Evaluating the epizootic and zoonotic threat of an H7N9 low-pathogenicity avian influenza virus (LPAIV) variant associated with enhanced pathogenicity in turkeys.The Journal of general virology · 2024Article
- Epitopes in the HA and NA of H5 and H7 avian influenza viruses that are important for antigenic drift.FEMS microbiology reviews · 2024Review
- Towards broad-spectrum protection: the development and challenges of combined respiratory virus vaccines.Frontiers in cellular and infection microbiology · 2024Review
- Antigenic Characterization of Human Monoclonal Antibodies for Therapeutic Use against H7N9 Avian Influenza Virus.Journal of virology · 2023Article
- Antigenic characterization of influenza and SARS-CoV-2 viruses.Analytical and bioanalytical chemistry · 2022Review
- Supplementation of H7N9 Virus-Like Particle Vaccine With Recombinant Epitope Antigen Confers Full Protection Against Antigenically Divergent H7N9 Virus in Chickens.Frontiers in immunology · 2022Article
Corrections and comments
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Authors and funding
16 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Since the first outbreak in 2013, the influenza A (H7N9) virus has continued emerging and has caused over five epidemic waves. Suspected antigenic changes of the H7N9 virus based on hemagglutination inhibition (HI) assay during the fifth outbreak have prompted the update of H7N9 candidate vaccine viruses (CVVs). In this study, we comprehensively compared the serological cross-reactivities induced by the hemagglutinins (HAs) of the earlier CVV A/Anhui/1/2013 (H7/AH13) and the updated A/Guangdong/17SF003/2016 (H7/GD16). We found that although H7/GD16 showed poor HI cross-reactivity to immune sera from mice and rhesus macaques vaccinated with either H7/AH13 or H7/GD16, the cross-reactive neutralizing antibodies between H7/AH13 and H7/GD16 were comparably high. Passive transfer of H7/AH13 immune sera also provided complete protection against the lethal challenge of H7N9/GD16 virus in mice. Analysis of amino acid mutations in the HAs between H7/AH13 and H7/GD16 revealed that L226Q substitution increases the HA binding avidity to sialic acid receptors on red blood cells, leading to decreased HI titers against viruses containing HA Q226 and thus resulting in a biased antigenic evaluation based on HI assay. These results suggest that amino acids located in the receptor-binding site could mislead the evaluation of antigenic variation by solely impacting the receptor-binding avidity to red blood cells without genuine contribution to antigenic drift. Our study highlighted that viral receptor-binding avidity and combination of multiple serological assays should be taken into consideration in evaluating and selecting a candidate vaccine virus of H7N9 and other subtypes of influenza viruses.
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