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- W4382055551 abstract "Lipid nanoparticle (LNP)-formulated messenger RNA (mRNA) vaccineare a promising platform to prevent infectious diseases as demonstrated by the recent success of SARS-CoV-2 mRNA vaccines. To avoid immune recognition and uncontrolled inflammation, nucleoside-modified mRNA is used. However, such modification largely abrogates the innate immune responses that are critical to orchestrating robust adaptive immunity. Here we develop an LNP component—an adjuvant lipidoid—that can enhance the adjuvanticity of mRNA-LNP vaccines. Our results show that partial substitution of ionizable lipidoid with adjuvant lipidoid not only enhanced mRNA delivery, but also endowed LNPs with Toll-like receptor 7/8-agonistic activity, which significantly increased the innate immunity of the SARS-CoV-2 mRNA-LNP vaccine with good tolerability in mice. Our optimized vaccine elicits potent neutralizing antibodies against multiple SARS-CoV-2 pseudovirus variants, strong Th1-biased cellular immunity, and robust B cell and long-lived plasma cell responses. Importantly, this adjuvant lipidoid substitution strategy works successfully in a clinically relevant mRNA-LNP vaccine, demonstrating its translational potential. A lipid nanoparticle (LNP) component—an adjuvant lipidoid—is developed to enhance the adjuvanticity of LNPs, which significantly increases the innate and adaptive responses of the COVID-19 mRNA vaccines with good tolerability in mice." @default.
- W4382055551 created "2023-06-27" @default.
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- W4382055551 date "2023-06-26" @default.
- W4382055551 modified "2023-10-04" @default.
- W4382055551 title "Adjuvant lipidoid-substituted lipid nanoparticles augment the immunogenicity of SARS-CoV-2 mRNA vaccines" @default.
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- W4382055551 doi "https://doi.org/10.1038/s41565-023-01404-4" @default.
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