| Autor: |
Jain S, Kumar S, Lai L, Linderman S, Malik AA, Ellis ML, Godbole S, Solis D, Sahoo MK, Bechnak K, Paredes I, Tanios R, Kazzi B, Dib SM, Litvack MB, Wimalasena ST, Ciric C, Rostad C, West R, Teng IT, Wang D, Edupuganti S, Kwong PD, Rouphael N, Pinsky BA, Douek DC, Wrammert J, Moreno A, Suthar MS |
| Jazyk: |
angličtina |
| Zdroj: |
BioRxiv : the preprint server for biology [bioRxiv] 2024 Feb 05. Date of Electronic Publication: 2024 Feb 05. |
| DOI: |
10.1101/2024.02.03.578771 |
| Abstrakt: |
The rapid emergence of divergent SARS-CoV-2 variants has led to an update of the COVID-19 booster vaccine to a monovalent version containing the XBB.1.5 spike. To determine the neutralization breadth following booster immunization, we collected blood samples from 24 individuals pre- and post-XBB.1.5 mRNA booster vaccination (∼1 month). The XBB.1.5 booster improved both neutralizing activity against the ancestral SARS-CoV-2 strain (WA1) and the circulating Omicron variants, including EG.5.1, HK.3, HV.1, XBB.1.5 and JN.1. Relative to the pre-boost titers, the XBB.1.5 monovalent booster induced greater total IgG and IgG subclass binding, particular IgG4, to the XBB.1.5 spike as compared to the WA1 spike. We evaluated antigen-specific memory B cells (MBCs) using either spike or receptor binding domain (RBD) probes and found that the monovalent booster largely increases non-RBD cross-reactive MBCs. These data suggest that the XBB.1.5 monovalent booster induces cross-reactive antibodies that neutralize XBB.1.5 and related Omicron variants. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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