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Herman, Jonathan D; Wang, Chuangqi; Loos, Carolin; Yoon, Hyunah; Rivera, Johanna; Eugenia Dieterle, M; Haslwanter, Denise; Jangra, Rohit K; Bortz, 3rd, Robert H; Bar, Katharine J; Julg, Boris; Chandran, Kartik; Lauffenburger, Douglas; Pirofski, Liise-Anne; Alter, Galit
Nature communications, 11/2021, Volume: 12, Issue: 1Journal Article
Transfer of convalescent plasma (CP) had been proposed early during the SARS-CoV-2 pandemic as an accessible therapy, yet trial results worldwide have been mixed, potentially due to the heterogeneous nature of CP. Here we perform deep profiling of SARS-CoV-2-specific antibody titer, Fc-receptor binding, and Fc-mediated functional assays in CP units, as well as in plasma from hospitalized COVID-19 patients before and after CP administration. The profiling results show that, although all recipients exhibit expanded SARS-CoV-2-specific humoral immune responses, CP units contain more functional antibodies than recipient plasma. Meanwhile, CP functional profiles influence the evolution of recipient humoral immunity in conjuncture with the recipient's pre-existing SARS-CoV2-specific antibody titers: CP-derived SARS-CoV-2 nucleocapsid-specific antibody functions are associated with muted humoral immune evolution in patients with high titer anti-spike IgG. Our data thus provide insights into the unexpected impact of CP-derived functional anti-spike and anti-nucleocapsid antibodies on the evolution of SARS-CoV-2-specific response following severe infection.
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