[HTML][HTML] SARS-CoV-2 specific memory B-cells from individuals with diverse disease severities recognize SARS-CoV-2 variants of concern.

ZL Lyski, AE Brunton, MI Strnad, PE Sullivan… - medRxiv, 2021 - ncbi.nlm.nih.gov
ZL Lyski, AE Brunton, MI Strnad, PE Sullivan, SAR Siegel, FG Tafesse, MK Slifka…
medRxiv, 2021ncbi.nlm.nih.gov
In this investigation we examined the magnitude, breadth, and durability of SARS-CoV-2
specific antibodies in two distinct B-cell compartments: long-lived plasma cell-derived
antibodies in the plasma, and peripheral memory B-cells along with their associated
antibody profiles elicited after in vitro stimulation. We found that magnitude varied amongst
individuals, but was the highest in hospitalized subjects. Variants of concern (VoC)-RBD-
reactive antibodies were found in the plasma of 72% of samples in this investigation, and …
Abstract
In this investigation we examined the magnitude, breadth, and durability of SARS-CoV-2 specific antibodies in two distinct B-cell compartments: long-lived plasma cell-derived antibodies in the plasma, and peripheral memory B-cells along with their associated antibody profiles elicited after in vitro stimulation. We found that magnitude varied amongst individuals, but was the highest in hospitalized subjects. Variants of concern (VoC)-RBD-reactive antibodies were found in the plasma of 72% of samples in this investigation, and VoC-RBD-reactive memory B-cells were found in all but 1 subject at a single time-point. This finding, that VoC-RBD-reactive MBCs are present in the peripheral blood of all subjects including those that experienced asymptomatic or mild disease, provides a reason for optimism regarding the capacity of vaccination, prior infection, and/or both, to limit disease severity and transmission of variants of concern as they continue to arise and circulate.
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