ArticleProceedings of the National Academy of Sciences of the United States of America2023
Antibodies elicited in humans upon chimeric hemagglutinin-based influenza virus vaccination confer FcγR-dependent protection in vivo.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
What it found
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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.
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.
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Who cites it
18 citing papers in PubMed, 18 citations in OpenAlex.
- A group 1 hemagglutinin stem vaccine elicits broad humoral responses against influenza in phase 1/2a study.Nature communications · 2026Trial
- Hemagglutinin Stalk-Specific Fc-Mediated Functions Are Associated With Protection Against Influenza Illness After Seasonal Influenza Vaccination.The Journal of infectious diseases · 2024Trial
- A VSV-vector vaccine simultaneously targeting H5N1 hemagglutinin and matrix protein 2 induces robust neutralizing and ADCC antibody responses and provides full protection against lethal H5N1 infection in a mouse model.Journal of virology · 2026Article
- Early Fc-effector antibody signatures impact COVID-19 disease trajectory.medRxiv : the preprint server for health sciences · 2026Article
- Intranasal delivery of a COBRA-based protein vaccine adjuvanted with c-di-AMP enhances breadth of protective immune responses against seasonal influenza viruses.Frontiers in immunology · 2026Article
- Pre-existing cross-reactive immunity to highly pathogenic avian influenza 2.3.4.4b A(H5N1) virus in the United States.Nature communications · 2025Article
- Chimeric hemagglutinin-based universal influenza mRNA vaccine induces protective immunity and bone marrow plasma cells in rhesus macaques.Cell reports. Medicine · 2025Article
- Mucosal immunity and vaccination strategies: current insights and future perspectives.Molecular biomedicine · 2025Review
- Review
- Molecular parameters governing antibody FcγR signaling and effector functions in the context of HIV envelope.Cell reports · 2025Article
- Article
- A Hidden Guardian: The Stability and Spectrum of Antibody-Dependent Cell-Mediated Cytotoxicity in COVID-19 Response in Chinese Adults.Vaccines · 2025Article
- Proteomics-driven screening of artemisinin-based combination ratios and mechanistic insights intoFrontiers in immunology · 2025Article
- Fc-FcγR interactions during infections: From neutralizing antibodies to antibody-dependent enhancement.Immunological reviews · 2024Review
- Linking Effector Function to Antitumor Monoclonal Antibody Efficacy.Journal of immunology (Baltimore, Md. : 1950) · 2024Article
- Meeting Report From "Correlates of Protection for Next Generation Influenza Vaccines: Lessons Learned From the COVID-19 Pandemic".Influenza and other respiratory viruses · 2024Article
- Opportunities and challenges for T cell-based influenza vaccines.Nature reviews. Immunology · 2024Review
- Vaccine Strategies to Elicit Mucosal Immunity.Vaccines · 2024Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 1 country.
Funding
Abstract
Antibody responses against highly conserved epitopes on the stalk domain of influenza virus hemagglutinin (HA) confer broad protection; however, such responses are limited. To effectively induce stalk-specific immunity against conserved HA epitopes, sequential immunization strategies have been developed based on chimeric HA (cHA) constructs featuring different head domains but the same stalk regions. Immunogenicity studies in small animal models, as well as in humans, revealed that cHA immunogens elicit stalk-specific IgG responses with broad specificity against heterologous influenza virus strains. However, the mechanisms by which these antibodies confer in vivo protection and the contribution of their Fc effector function remain unclear. To characterize the role of Fc-FcγR (Fcγ receptor) interactions to the in vivo protective activity of IgG antibodies elicited in participants in a phase I trial of a cHA vaccine candidate, we performed passive transfer studies of vaccine-elicited IgG antibodies in mice humanized for all classes of FcγRs, as well as in mice deficient for FcγRs. IgG antibodies elicited upon cHA vaccination completely protected FcγR humanized mice against lethal influenza virus challenge, while no protection was evident in FcγR-deficient mice, suggesting a major role for FcγR pathways in the protective function of vaccine-elicited IgG antibodies. These findings have important implications for influenza vaccine development, guiding the design of vaccination approaches with the capacity to elicit IgG responses with optimal Fc effector function.
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Registered trials
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.