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2015 ; 13
(12
): e1002321
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Exceptional Antibodies Produced by Successive Immunizations
#MMPMID26641938
Gearhart PJ
; Castiblanco DP
; Russell Knode LM
PLoS Biol
2015[Dec]; 13
(12
): e1002321
PMID26641938
show ga
Antibodies stand between us and pathogens. Viruses mutate quickly to avoid
detection, and antibodies mutate at similar rates to hunt them down. This death
spiral is fueled by specialized proteins and error-prone polymerases that change
DNA sequences. Here, we explore how B lymphocytes stay in the race by expressing
activation-induced deaminase, which unleashes a tsunami of mutations in the
immunoglobulin loci. This produces random DNA substitutions, followed by
selection for the highest affinity antibodies. We may be able to manipulate the
process to produce better antibodies by expanding the repertoire of specific B
cells through successive vaccinations.