Particulate multivalent presentation of the receptor binding domain induces protective immune responses against MERS-CoV
| Autor: | Nisreen M. A. Okba, Ivy Widjaja, Brenda van Dieren, Andrea Aebischer, Geert van Amerongen, Leon de Waal, Koert J. Stittelaar, Debby Schipper, Byron Martina, Judith M. A. van den Brand, Martin Beer, Berend-Jan Bosch, Bart L. Haagmans |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Emerging Microbes and Infections, Vol 9, Iss 1, Pp 1080-1091 (2020) |
| Druh dokumentu: | article |
| ISSN: | 22221751 2222-1751 |
| DOI: | 10.1080/22221751.2020.1760735 |
| Popis: | ABSTRACTMiddle East respiratory syndrome coronavirus (MERS-CoV) is a WHO priority pathogen for which vaccines are urgently needed. Using an immune-focusing approach, we created self-assembling particles multivalently displaying critical regions of the MERS-CoV spike protein ─fusion peptide, heptad repeat 2, and receptor binding domain (RBD) ─ and tested their immunogenicity and protective capacity in rabbits. Using a “plug-and-display” SpyTag/SpyCatcher system, we coupled RBD to lumazine synthase (LS) particles producing multimeric RBD-presenting particles (RBD-LS). RBD-LS vaccination induced antibody responses of high magnitude and quality (avidity, MERS-CoV neutralizing capacity, and mucosal immunity) with cross-clade neutralization. The antibody responses were associated with blocking viral replication and upper and lower respiratory tract protection against MERS-CoV infection in rabbits. This arrayed multivalent presentation of the viral RBD using the antigen-SpyTag/LS-SpyCatcher is a promising MERS-CoV vaccine candidate and this platform may be applied for the rapid development of vaccines against other emerging viruses such as SARS-CoV-2. |
| Databáze: | Directory of Open Access Journals |
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