Nature nanotechnology

Custom-designed lipid nanoparticles with siloxane improve cell processing for targeted mRNA therapy delivery

Updated

Abstract

Siloxane-based ionizable lipids improve mRNA delivery efficacy in mice, enabling targeted gene editing and recovery from lung damage.

  • Siloxane moieties enhance the cellular uptake of mRNA lipid nanoparticles (LNPs) and their ability to escape endosomes.
  • Organ-specific siloxane-incorporated LNPs (SiLNPs) facilitate effective gene knockout in the liver and lungs of various mouse models.
  • Lung-targeted Si-N14 LNPs promote recovery from damage caused by viral infections in the lungs.
  • The findings suggest potential applications of SiLNPs in mRNA therapeutics for tissue-specific treatments.

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Funding

Competing interests

Competing interests: L.X. and M.J.M. are inventors on a patent filed by the Trustees of the University of Pennsylvania (International Patent Application No. PCT/US23/66564) describing the lipid nanoparticle technology in this study. J.M.W. is a paid advisor to and holds equity in iECURE, Passage Bio and the Center for Breakthrough Medicines (CBM). He also holds equity in the former G2 Bio asset companies and Ceva Santé Animale. He has sponsored research agreements with Alexion Pharmaceuticals, Amicus Therapeutics, CBM, Ceva Santé Animale, Elaaj Bio, FA212, Foundation for Angelman Syndrome Therapeutics, former G2 Bio asset companies, iECURE and Passage Bio, which are licensees of Penn Technology. J.M.W., L.W. and C.C.W are inventors on patents that have been licensed to various biopharmaceutical companies and for which they may receive payments. D.W. is named on patents that describe the use of nucleoside-modified mRNA as a platform to deliver therapeutic proteins and vaccines. M.J.M., D.W. and M.-G.A. are also named on patents describing the use of lipid nanoparticles and lipid compositions for nucleic acid delivery. The other authors declare no competing interests.
PubMed

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