Recombinant protein HR212 targeting heptad repeat 2 domain in spike protein S2 subunit elicits broad‐spectrum neutralizing antibodies against SARS‐CoV‐2 and its variants

Abstract excerpt

SARS-CoV-2 variants are under continuous emergence carry numerous mutations within S1 subunit in spike protein and have escaped neutralization through many currently used vaccines and antibodies. The development of next-generation vaccines is a continuing and long-term need. In our prior research, the recombinant protein vaccine HR121 targeting the heptad repeat (HR) 1 domain of S2 subunit was constructed, which...

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