Enzyme-Catalyzed One-Step Synthesis of Ionizable Cationic Lipids for Lipid Nanoparticle-Based mRNA COVID-19 Vaccines

Oct 21, 2022ACS nano

Enzyme-made charged fats for lipid nanoparticles in mRNA COVID-19 vaccines

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Abstract

The AA3-DLin lipid nanoparticles (LNPs) demonstrated outstanding mRNA delivery efficacy and long-term storage capability.

  • Ionizable cationic lipid-containing LNPs are advanced non-viral gene delivery platforms with potential in gene therapeutics.
  • The AA3-DLin LNPs encapsulating SARS-CoV-2 spike mRNAs induced strong immunogenicity in a BALB/c mouse model.
  • Immunogenicity was assessed through antibody titers, virus challenge, and T cell immune response studies.
  • A chemical library of ionizable cationic lipids was developed using a one-step enzyme-catalyzed esterification method.
  • The study provides insights into lipid design, synthesis, screening, optimization, fabrication, characterization, and application.

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