Article ; Online: Prefusion-stabilized SARS-CoV-2 S2-only antigen provides protection against SARS-CoV-2 challenge.
2024 Volume 15, Issue 1, Page(s) 1553
Abstract: ... neutralizing responses against several sarbecoviruses and protects female BALB/c mice from mouse-adapted SARS ... CoV-2 lethal challenge and partially protects female BALB/c mice from mouse-adapted SARS-CoV lethal ...
Abstract | Ever-evolving SARS-CoV-2 variants of concern (VOCs) have diminished the effectiveness of therapeutic antibodies and vaccines. Developing a coronavirus vaccine that offers a greater breadth of protection against current and future VOCs would eliminate the need to reformulate COVID-19 vaccines. Here, we rationally engineer the sequence-conserved S2 subunit of the SARS-CoV-2 spike protein and characterize the resulting S2-only antigens. Structural studies demonstrate that the introduction of interprotomer disulfide bonds can lock S2 in prefusion trimers, although the apex samples a continuum of conformations between open and closed states. Immunization with prefusion-stabilized S2 constructs elicits broadly neutralizing responses against several sarbecoviruses and protects female BALB/c mice from mouse-adapted SARS-CoV-2 lethal challenge and partially protects female BALB/c mice from mouse-adapted SARS-CoV lethal challenge. These engineering and immunogenicity results should inform the development of next-generation pan-coronavirus therapeutics and vaccines. |
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MeSH term(s) | Female ; Animals ; Humans ; Mice ; SARS-CoV-2 ; COVID-19 Vaccines ; COVID-19/prevention & control ; Antigens, Viral/genetics ; Mice, Inbred BALB C ; Spike Glycoprotein, Coronavirus/genetics ; Antibodies, Neutralizing ; Antibodies, Viral |
Chemical Substances | COVID-19 Vaccines ; spike protein, SARS-CoV-2 ; Antigens, Viral ; Spike Glycoprotein, Coronavirus ; Antibodies, Neutralizing ; Antibodies, Viral |
Language | English |
Publishing date | 2024-02-20 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 2553671-0 |
ISSN | 2041-1723 ; 2041-1723 |
ISSN (online) | 2041-1723 |
ISSN | 2041-1723 |
DOI | 10.1038/s41467-024-45404-x |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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