ArticleApplied microbiology and biotechnology2024
Design of the conserved epitope peptide of SARS-CoV-2 spike protein as the broad-spectrum COVID-19 vaccine.
Article in Applied microbiology and biotechnology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- SARS-CoV-2 membrane protein recruits PP2A to dephosphorylate the nucleocapsid and promote virion production.Journal of biomedical science · 2026Article
- Review
- In Silico Ligand-Based Screening of PDB Database for Searching Unique Motifs Against SARS-CoV-2.Biomolecules · 2026Article
- Comparable immune escape capacity for NB.1 with that of JN.1 variant and survey of infection with severe acute respiratory syndrome coronavirus 2 variants among ChineseFrontiers in immunology · 2026Article
- Novel method for the identification of circulating SARS-CoV-2 variants and clinical characteristics of patient infection with SARS-CoV-2 variants in Central China.Frontiers in cellular and infection microbiology · 2025Article
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5 authors.
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Abstract
Our previous study has found that monoclonal antibodies targeting a conserved epitope peptide spanning from residues 1144 to 1156 of SARS-CoV-2 spike (S) protein, namely S(1144-1156), can broadly neutralize all of the prevalent SARS-CoV-2 strains, including the wild type, Alpha, Epsilon, Delta, and Gamma variants. In the study, S(1144-1156) was conjugated with bovine serum albumin (BSA) and formulated with Montanide ISA 51 adjuvant for inoculation in BALB/c mice to study its potential as a vaccine candidate. Results showed that the titers of S protein-specific IgGs and the neutralizing antibodies in mouse sera against various SARS-CoV-2 variants, including the Omicron sublineages, were largely induced along with three doses of immunization. The significant release of IFN-γ and IL-2 was also observed by ELISpot assays through stimulating vaccinated mouse splenocytes with the S(1144-1156) peptide. Furthermore, the vaccination of the S(1143-1157)- and S(1142-1158)-EGFP fusion proteins can elicit more SARS-CoV-2 neutralizing antibodies in mouse sera than the S(1144-1156)-EGFP fusion protein. Interestingly, the antisera collected from mice inoculated with the S(1144-1156) peptide vaccine exhibited better efficacy for neutralizing Omicron BA.2.86 and JN.1 subvariants than Omicron BA.1, BA.2, and XBB subvariants. Since the amino acid sequences of the S(1144-1156) are highly conserved among various SARS-CoV-2 variants, the immunogen containing the S(1144-1156) core epitope can be designed as a broadly effective COVID-19 vaccine. KEY POINTS: • Inoculation of mice with the S(1144-1156) peptide vaccine can induce bnAbs against various SARS-CoV-2 variants. • The S(1144-1156) peptide stimulated significant release of IFN-γ and IL-2 in vaccinated mouse splenocytes. • The S(1143-1157) and S(1142-1158) peptide vaccines can elicit more SARS-CoV-2 nAbs in mice.
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