Memory B Cell Activation, Broad Anti-influenza Antibodies, and Bystander Activation Revealed by Single-Cell Transcriptomics.
Cell Rep
; 30(3): 905-913.e6, 2020 01 21.
Article
em En
| MEDLINE
| ID: mdl-31968262
ABSTRACT
Antibody memory protects humans from many diseases. Protective antibody memory responses require activation of transcriptional programs, cell proliferation, and production of antigen-specific antibodies, but how these aspects of the response are coordinated is poorly understood. We profile the molecular and cellular features of the antibody response to influenza vaccination by integrating single-cell transcriptomics, longitudinal antibody repertoire sequencing, and antibody binding measurements. Single-cell transcriptional profiling reveals a program of memory B cell activation characterized by CD11c and T-bet expression associated with clonal expansion and differentiation toward effector function. Vaccination elicits an antibody clone, which rapidly acquired broad high-affinity hemagglutinin binding during affinity maturation. Unexpectedly, many antibody clones elicited by vaccination do not bind vaccine, demonstrating non-specific activation of bystander antibodies by influenza vaccination. These results offer insight into how molecular recognition, transcriptional programs, and clonal proliferation are coordinated in the human B cell repertoire during memory recall.
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Base de dados:
MEDLINE
Assunto principal:
Linfócitos B
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Ativação Linfocitária
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Efeito Espectador
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Influenza Humana
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Análise de Célula Única
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Transcriptoma
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Memória Imunológica
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Anticorpos Antivirais
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article