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Immunity . Dissecting the intricacies of human antibody responses to SARS-CoV-1 and SARS-CoV-2 infection

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  • Immunity . Dissecting the intricacies of human antibody responses to SARS-CoV-1 and SARS-CoV-2 infection

    Immunity


    . 2023 Oct 27:S1074-7613(23)00447-8.
    doi: 10.1016/j.immuni.2023.10.007. Online ahead of print. Dissecting the intricacies of human antibody responses to SARS-CoV-1 and SARS-CoV-2 infection

    Ruoke Wang 1 , Yang Han 2 , Rui Zhang 3 , Jiayi Zhu 4 , Xuanyu Nan 4 , Yaping Liu 3 , Ziqing Yang 3 , Bini Zhou 5 , Jinfang Yu 6 , Zichun Lin 6 , Jinqian Li 3 , Peng Chen 3 , Yangjunqi Wang 4 , Yujie Li 5 , Dongsheng Liu 5 , Xuanling Shi 3 , Xinquan Wang 6 , Qi Zhang 3 , Yuhe R Yang 7 , Taisheng Li 8 , Linqi Zhang 9



    AffiliationsAbstract

    The 2003 severe acute respiratory syndrome coronavirus (SARS-CoV-1) causes more severe disease than SARS-CoV-2, which is responsible for COVID-19. However, our understanding of antibody response to SARS-CoV-1 infection remains incomplete. Herein, we studied the antibody responses in 25 SARS-CoV-1 convalescent patients. Plasma neutralization was higher and lasted longer in SARS-CoV-1 patients than in severe SARS-CoV-2 patients. Among 77 monoclonal antibodies (mAbs) isolated, 60 targeted the receptor-binding domain (RBD) and formed 7 groups (RBD-1 to RBD-7) based on their distinct binding and structural profiles. Notably, RBD-7 antibodies bound to a unique RBD region interfaced with the N-terminal domain of the neighboring protomer (NTD proximal) and were more prevalent in SARS-CoV-1 patients. Broadly neutralizing antibodies for SARS-CoV-1, SARS-CoV-2, and bat and pangolin coronaviruses were also identified. These results provide further insights into the antibody response to SARS-CoV-1 and inform the design of more effective strategies against diverse human and animal coronaviruses.

    Keywords: RBD antibody; SARS-CoV-1; SARS-CoV-2; antibody grouping; antibody response; cross reactivity; cryo-EM structure; epitope mapping; monoclonal antibody; neutralizing antibodies.

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