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- W2894881231 abstract "Pfs25 is a malaria transmission-blocking vaccine antigen candidate, but its apparently limited immunogenicity in humans has hindered clinical development. Here, we show that recombinant, polyhistidine-tagged (his-tagged) Pfs25 can be mixed at the time of immunization with pre-formed liposomes containing cobalt porphyrin–phospholipid, resulting in spontaneous nanoliposome antigen particleization (SNAP). Antigens are stably presented in uniformly orientated display via his-tag insertion in the cobalt porphyrin–phospholipid bilayer, without covalent modification or disruption of antigen conformation. SNAP immunization of mice and rabbits is well tolerated with minimal local reactogenicity, and results in orders-of-magnitude higher functional antibody generation compared with other ‘mix-and-inject’ adjuvants. Serum-stable antigen binding during transit to draining lymph nodes leads to enhanced antigen uptake by phagocytic antigen-presenting cells, with subsequent generation of long-lived, antigen-specific plasma cells. Seamless multiplexing with four additional his-tagged Plasmodium falciparum polypeptides induces strong and balanced antibody production, illustrating the simplicity of developing multistage particulate vaccines with SNAP immunization. Mixing antigens with liposomes containing cobalt porphyrin leads to the spontaneous formation of a malaria nanovaccine with increased uptake by phagocytic antigen-presenting cells, boosting the production of long-lasting functional antibodies in mice and rabbits." @default.
- W2894881231 created "2018-10-12" @default.
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- W2894881231 date "2018-10-08" @default.
- W2894881231 modified "2023-10-16" @default.
- W2894881231 title "A malaria vaccine adjuvant based on recombinant antigen binding to liposomes" @default.
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- W2894881231 doi "https://doi.org/10.1038/s41565-018-0271-3" @default.
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