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Identification of Linear Peptide Immunogens with Verified Broad-spectrum Immunogenicity from the Conserved Regions within the Hemagglutinin Stem Domain of H1N1 Influenza Virus
Li, Shuang1; Qiao, Yongbo1; Xu, Yan2; Li, Pengju1; Nie, Jiaojiao1; Zhao, Qi3; Chai, Wen4; Shi, Yuhua1; Kong, Wei1,5; Shan, Yaming1,3,5
2022-02-17
Source PublicationImmunological Investigations
ISSN0882-0139
Volume51Issue:2Pages:411-424
Abstract

Background: Influenza A viruses (IAVs) induce acute respiratory disease and cause severe epidemics and pandemics. Since IAVs exhibit antigenic variation and genome reassortment, the development of broad-spectrum influenza vaccines is crucial. The stem of the hemagglutinin (HA) is highly conserved across IAV strains and thus has been explored in broad-spectrum influenza vaccine studies. The present study aimed to identify viral epitopes capable of eliciting effective host immune responses, which can be explored for the development of broad-spectrum non-strain specific prophylactic options against IAV. Methods: In this study, a series of conserved linear sequences from the HA stem of IAV (H1N1) was recognized by sequence alignment and B/T-cell epitope prediction after being chemically coupled to the Keyhole Limpet Hemocyanin (KLH) protein. The predicted linear epitopes were identified by enzyme-linked immunosorbent assay (ELISA) after animal immunization and then fused with ferritin carriers. Results: Three predicted linear epitopes with relatively strong immunogenicity, P3, P6 and P8 were fused with ferritin carriers P3F, P6F and P8F, respectively to further improve their immunogenicity. Antibody titre of the sera of mice immunized with the recombinant immunogens revealed the elicitation of specific antibody-binding activities by the identified sequences. While hemagglutinin-inhibition activities were not detected in the antisera, neutralizing antibodies against the H1 and H3 virus subtypes were detected by the microneutralization assay. Conclusion: The linear epitopes fused with ferritin identified in this study can lay the foundation for future advancements in development of broad-spectrum subunit vaccine against IAV (H1N1), and give rise to the potential future applicability of ferritin-based antigen delivery nanoplatforms.

KeywordBroad-spectrum Influenza Vaccines Ferritin Hemagglutinin Stem Influenza a Viruses Neutralizing Activities
DOI10.1080/08820139.2020.1834579
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaImmunology
WOS SubjectImmunology
WOS IDWOS:000579692200001
PublisherTAYLOR & FRANCIS INC, 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106
Scopus ID2-s2.0-85114022422
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionCancer Centre
Faculty of Health Sciences
Co-First AuthorLi, Shuang
Corresponding AuthorShi, Yuhua; Shan, Yaming
Affiliation1.National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, Jilin, China
2.Laboratory of Molecular Immunology, State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China
3.Cancer Centre, Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Taipa, Macao
4.Changchun Institute of Biological Products Co., Ltd, Changchun, Jilin, China
5.Key Laboratory for Molecular Enzymology and Engineering, the Ministry of Education, School of Life Sciences, Jilin University, Changchun, Jilin, China
Corresponding Author AffilicationCancer Centre
Recommended Citation
GB/T 7714
Li, Shuang,Qiao, Yongbo,Xu, Yan,et al. Identification of Linear Peptide Immunogens with Verified Broad-spectrum Immunogenicity from the Conserved Regions within the Hemagglutinin Stem Domain of H1N1 Influenza Virus[J]. Immunological Investigations, 2022, 51(2), 411-424.
APA Li, Shuang., Qiao, Yongbo., Xu, Yan., Li, Pengju., Nie, Jiaojiao., Zhao, Qi., Chai, Wen., Shi, Yuhua., Kong, Wei., & Shan, Yaming (2022). Identification of Linear Peptide Immunogens with Verified Broad-spectrum Immunogenicity from the Conserved Regions within the Hemagglutinin Stem Domain of H1N1 Influenza Virus. Immunological Investigations, 51(2), 411-424.
MLA Li, Shuang,et al."Identification of Linear Peptide Immunogens with Verified Broad-spectrum Immunogenicity from the Conserved Regions within the Hemagglutinin Stem Domain of H1N1 Influenza Virus".Immunological Investigations 51.2(2022):411-424.
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