Memory B cells targeting SARS-CoV-2 spike protein and their dependence on CD4+ T cell help.
Cell Rep
; 35(13): 109320, 2021 06 29.
Article
in English
| MEDLINE | ID: covidwho-1275189
ABSTRACT
Memory B cells seem to be more durable than antibodies and thus crucial for the long-term immunity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Here we investigate SARS-CoV-2 spike-specific memory B cells and their dependence on CD4+ T cell help in different settings of coronavirus disease 2019 (COVID-19). Compared with severely ill individuals, those who recovered from mild COVID-19 develop fewer but functionally superior spike-specific memory B cells. Generation and affinity maturation of these cells is best associated with IL-21+CD4+ T cells in recovered individuals and CD40L+CD4+ T cells in severely ill individuals. The increased activation and exhaustion of memory B cells observed during COVID-19 correlates with CD4+ T cell functions. Intriguingly, CD4+ T cells recognizing membrane protein show a stronger association with spike-specific memory B cells than those recognizing spike or nucleocapsid proteins. Overall, we identify CD4+ T cell subsets associated with the generation of B cell memory during SARS-CoV-2 infection.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
B-Lymphocytes
/
CD4-Positive T-Lymphocytes
/
Spike Glycoprotein, Coronavirus
/
SARS-CoV-2
/
COVID-19
Type of study:
Randomized controlled trials
Limits:
Humans
Language:
English
Journal:
Cell Rep
Year:
2021
Document Type:
Article
Affiliation country:
J.celrep.2021.109320
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