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Deprecated: Implicit conversion from float 269.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 J+Immunol 2021 ; 206 (11): 2605-2613 Nephropedia Template TP
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Evaluation of Cellular and Serological Responses to Acute SARS-CoV-2 Infection Demonstrates the Functional Importance of the Receptor-Binding Domain #MMPMID33952616
Mantus G; Nyhoff LE; Kauffman RC; Edara VV; Lai L; Floyd K; Shi PY; Menachery VD; Edupuganti S; Scherer EM; Kay A; McNair N; Anderson EJ; Rouphael N; Ahmed R; Suthar MS; Wrammert J
J Immunol 2021[Jun]; 206 (11): 2605-2613 PMID33952616show ga
The factors that control the development of an effective immune response to the recently emerged SARS-CoV-2 virus are poorly understood. In this study, we provide a cross-sectional analysis of the dynamics of B cell responses to SARS-CoV-2 infection in hospitalized COVID-19 patients. We observe changes in B cell subsets consistent with a robust humoral immune response, including significant expansion of plasmablasts and activated receptor-binding domain (RBD)-specific memory B cell populations. We observe elevated titers of Abs to SARS-CoV-2 RBD, full-length Spike, and nucleoprotein over the course of infection, with higher levels of RBD-specific IgG correlating with increased serum neutralization. Depletion of RBD-specific Abs from serum removed a major portion of neutralizing activity in most individuals. Some donors did retain significant residual neutralization activity, suggesting a potential Ab subset targeting non-RBD epitopes. Taken together, these findings are instructive for future vaccine design and mAb strategies.