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- Title
Multiple layers of B cell memory with different effector functions.
- Authors
Dogan, Ismail; Bertocci, Barbara; Vilmont, Valérie; Delbos, Frédéric; Mégret, Jérome; Storck, Sébastien; Reynaud, Claude-Agnès; Weill, Jean-Claude
- Abstract
Memory B cells are at the center of longstanding controversies regarding the presence of antigen for their survival and their re-engagement in germinal centers after secondary challenge. Using a new mouse model of memory B cell labeling dependent on the cytidine deaminase AID, we show that after immunization with a particulate antigen, B cell memory appeared in several subsets, comprising clusters of immunoglobulin M–positive (IgM+) and IgG1+ B cells in germinal center–like structures that persisted up to 8 months after immunization, as well as IgM+ and IgG1+ B cells with a memory phenotype outside of B cell follicles. After challenge, the IgG subset differentiated into plasmocytes, whereas the IgM subset reinitiated a germinal center reaction. This model, in which B cell memory appears in several layers with different functions, reconciles previous conflicting propositions.
- Subjects
B cells; ANTIGENS; IMMUNOGLOBULINS; PLASMA cells; IMMUNIZATION
- Publication
Nature Immunology, 2009, Vol 10, Issue 12, p1292
- ISSN
1529-2908
- Publication type
Article
- DOI
10.1038/ni.1814