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Reduced sensitivity of the SARS-CoV-2 Lambda variant to monoclonal antibodies and neutralizing antibodies induced by infection and vaccination

Emerg Microbes Infect. 2022-12; 
Meiyu Wang, Li Zhang, Qianqian Li, Bo Wang, Ziteng Liang, Yeqing Sun, Jianhui Nie, Jiajing Wu, Xiaodong Su, Xiaowang Qu, Yuhua Li, Youchun Wang, Weijin Huang
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Abstract

Severe acute respiratory syndrome coronavirus 2 variants have continued to emerge in diverse geographic locations with a temporal distribution. The Lambda variant containing multiple mutations in the spike protein, has thus far appeared mainly in South America. The variant harbours two mutations in the receptor binding domain, L452Q and F490S, which may change its infectivity and antigenicity to neutralizing antibodies. In this study, we constructed 10 pseudoviruses to study the Lambda variant and each individual amino acid mutation's effect on viral function, and used eight cell lines to study variant infectivity. In total, 12 monoclonal antibodies, 14 convalescent sera, and 23 immunized sera induced by mRNA v... More

Keywords

C.37, Lambda variant, SARS-CoV-2, convalescent serum, monoclonal antibodies, neutralization, vaccines