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- W2058744963 abstract "The mechanisms of secondary changes in antibody repertoires remain unclear. McHeyzer-Williams and colleagues define the stages of reentry of class-switched memory B cells into germinal centers to remodel existing antibody specificities. Effective vaccines induce high-affinity memory B cells and durable antibody responses through accelerated mechanisms of natural selection. Secondary changes in antibody repertoires after vaccine boosts suggest progressive rediversification of B cell receptors (BCRs), but the underlying mechanisms remain unresolved. Here, the integrated specificity and function of individual memory B cell progeny revealed ongoing evolution of polyclonal antibody specificities through germinal center (GC)-specific transcriptional activity. At the clonal and subclonal levels, single-cell expression of the genes encoding the costimulatory molecule CD83 and the DNA polymerase Polη segregated the secondary GC transcriptional program into four stages that regulated divergent mechanisms of memory BCR evolution. Our studies demonstrate that vaccine boosts reactivate a cyclic program of GC function in class-switched memory B cells to remodel existing antibody specificities and enhance durable immunological protection." @default.
- W2058744963 created "2016-06-24" @default.
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- W2058744963 date "2015-02-02" @default.
- W2058744963 modified "2023-10-17" @default.
- W2058744963 title "Class-switched memory B cells remodel BCRs within secondary germinal centers" @default.
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- W2058744963 doi "https://doi.org/10.1038/ni.3095" @default.
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