articlenpj VaccinesOct 11, 2023GOLD OA

Effect of mRNA-LNP components of two globally-marketed COVID-19 vaccines on efficacy and stability

Scripps Research Institute · Boston Children's Hospital · +5 more institutions

PubMed
Indexed incrossrefdoajpubmed

Abstract

During the COVID-19 pandemic, Pfizer-BioNTech and Moderna successfully developed nucleoside-modified mRNA lipid nanoparticle (LNP) vaccines. SARS-CoV-2 spike protein expressed by those vaccines are identical in amino acid sequence, but several key components are distinct. Here, we compared the effect of ionizable lipids, untranslated regions (UTRs), and nucleotide composition of the two vaccines, focusing on mRNA delivery, antibody generation, and long-term stability. We found that the ionizable lipid, SM-102, in Moderna's vaccine performs better than ALC-0315 in Pfizer-BioNTech's vaccine for intramuscular delivery of mRNA and antibody production in mice and long-term stability at 4 °C. Moreover,…

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