Intratracheal trimerized nanobody cocktail protects against SARS-CoV-2 Omicron in mice

Kayoko Nagata,Daichi Utsumi,Masamitsu Asaka,Ryota Maeda,Kotaro Shirakawa,Yasuhiro Kazuma,Ryosuke Nomura,Yoshihito Horisawa,Yohei Yanagida, Yugo Kawai,Kei Sato,Yutaro Yamaoka,Kei Miyakawa,Akihide Ryo,Yasuhiro Yasutomi,Akihiro Imura,Akifumi Takaori-Kondo

Research Square (Research Square)（2022）

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摘要

Abstract SARS-CoV-2 Omicron variants are highly resistant to vaccine-induced immunity and human monoclonal antibodies. Here, we demonstrate that a novel nanobody TP86 potently neutralized both BA.1 and BA.2 Omicron variants, and that the TP17 and TP86 nanobody cocktail broadly neutralized in vitro all VOCs as well as D614G. Furthermore, this cocktail showed therapeutic efficacy in vivo on VOCs using human ACE2 transgenic mice.

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trimerized nanobody cocktail protects,mice,sars-cov

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