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Contribution of single mutations to selected SARS-CoV-2 emerging variants spike antigenicity

Virology. 2021-09; 
Shang Yu Gong, Debashree Chatterjee, Jonathan Richard, Jérémie Prévost, Alexandra Tauzin, Romain Gasser, Yuxia Bo, Dani Vézina, Guillaume Goyette, Gabrielle Gendron-Lepage, Halima Medjahed, Michel Roger, Marceline Côté, Andrés Finzi
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摘要

Towards the end of 2020, multiple variants of concern (VOCs) and variants of interest (VOIs) have arisen from the original SARS-CoV-2 Wuhan-Hu-1 strain. Mutations in the Spike protein are highly scrutinized for their impact on transmissibility, pathogenesis and vaccine efficacy. Here, we contribute to the growing body of literature on emerging variants by evaluating the impact of single mutations on the overall antigenicity of selected variants and their binding to the ACE2 receptor. We observe a differential contribution of single mutants to the global variants phenotype related to ACE2 interaction and antigenicity. Using biolayer interferometry, we observe that enhanced ACE2 interaction is mostly modulated by... More

关键词

ACE2, COVID-19, Coronavirus, RBD, SARS-CoV-2, Spike glycoproteins, Temperature, Vaccines, Variants of concern