Matches in SemOpenAlex for { <https://semopenalex.org/work/W2980784028> ?p ?o ?g. }
- W2980784028 abstract "Abstract Generating sufficient antibody to block infection is a key challenge for vaccines against malaria. Here we show that antibody titres to a key target, the repeat region of the Plasmodium falciparum circumsporozoite protein ( Pf CSP), plateaued after two immunizations in a clinical trial of the radiation-attenuated sporozoite vaccine. To understand the mechanisms limiting vaccine responsiveness, we developed Ig-knockin mice with elevated numbers of Pf CSP-binding B cells. We determined that recall responses were inhibited by antibody feedback via epitope masking of the immunodominant Pf CSP repeat region. Importantly, the amount of antibody that prevents boosting is below the amount of antibody required for protection. Finally, while antibody feedback limited responses to the Pf CSP-repeat region in vaccinated volunteers, potentially protective subdominant responses to C-terminal regions did expand with subsequent boosts. These data suggest that antibody feedback drives the diversification of immune responses and that vaccination for malaria will require the targeting of multiple antigens." @default.
- W2980784028 created "2019-10-25" @default.
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- W2980784028 date "2019-10-18" @default.
- W2980784028 modified "2023-10-18" @default.
- W2980784028 title "Antibody feedback limits the expansion of cognate memory B cells but drives the diversification of vaccine-induced antibody responses" @default.
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- W2980784028 doi "https://doi.org/10.1101/808543" @default.
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