
Vaccines, Journal Year: 2024, Volume and Issue: 12(7), P. 714 - 714
Published: June 26, 2024
SARS-CoV-2 new waves are primarily caused by changes to the spike protein (S), which can substantially decrease efficacy of vaccines. Therefore, we tested several multivalent mRNA-LNP vaccines, targeting full-length S proteins different variants, and identified an optimal combination for protection against VOCs in BALB/c mice. The formulations included trivalent (WT + BA.5 XBB.1.5), pentavalent XBB.1.5 BQ.1.1 CH.1.1), octavalent CH.1.1 Alpha Delta BA.2) Among these vaccine showed superior almost all variants. Despite this, each elicited greater broad-spectrum neutralizing antibodies than previously evaluated bivalent BA.5). Subsequently, redesigned efficiently generate recent VOCs, including EG.5.1. Immunization with EG.5.1 XBB.1.16 BA.5) moderate levels Omicron VOCs. Results suggest that neutralization activity vaccines is better those WT Moreover, developed may be highly useful
Language: Английский