ジャーナル: Commun Biol / 年: 2024 タイトル: Broadly potent spike-specific human monoclonal antibodies inhibit SARS-CoV-2 Omicron sub-lineages. 著者: Melanie R Walker / Alexander Underwood / Kasper H Björnsson / Sai Sundar Rajan Raghavan / Maria R Bassi / Alekxander Binderup / Long V Pham / Santseharay Ramirez / Mette Pinholt / Robert ...著者: Melanie R Walker / Alexander Underwood / Kasper H Björnsson / Sai Sundar Rajan Raghavan / Maria R Bassi / Alekxander Binderup / Long V Pham / Santseharay Ramirez / Mette Pinholt / Robert Dagil / Anne S Knudsen / Manja Idorn / Max Soegaard / Kaituo Wang / Andrew B Ward / Ali Salanti / Jens Bukh / Lea Barfod / 要旨: The continuous emergence of SARS-CoV-2 variants of concern has rendered many therapeutic monoclonal antibodies (mAbs) ineffective. To date, there are no clinically authorized therapeutic antibodies ...The continuous emergence of SARS-CoV-2 variants of concern has rendered many therapeutic monoclonal antibodies (mAbs) ineffective. To date, there are no clinically authorized therapeutic antibodies effective against the recently circulating Omicron sub-lineages BA.2.86 and JN.1. Here, we report the isolation of broad and potent neutralizing human mAbs (HuMabs) from a healthcare worker infected with SARS-CoV-2 early in the pandemic. These include a genetically unique HuMab, named K501SP6, which can neutralize different Omicron sub-lineages, including BQ.1, XBB.1, BA.2.86 and JN.1, by targeting a highly conserved epitope on the N terminal domain, as well as an RBD-specific HuMab (K501SP3) with high potency towards earlier circulating variants that was escaped by the more recent Omicron sub-lineages through spike F486 and E484 substitutions. Characterizing SARS-CoV-2 spike-specific HuMabs, including broadly reactive non-RBD-specific HuMabs, can give insight into the immune mechanisms involved in neutralization and immune evasion, which can be a valuable addition to already existing SARS-CoV-2 therapies.