Cited by 1,014RNA Interference and Gene DeliveryNanoparticle-Based Drug DeliveryRNA and protein synthesis mechanisms

Expression kinetics of nucleoside-modified mRNA delivered in lipid nanoparticles to mice by various routes

Open access
Pardi, Norbert, Tuyishime, Steven, Muramatsu, Hiromi, Kariko, Katalin, Mui, Barbara L., Tam, Ying K., Madden, Thomas D., Hope, Michael J. +1 more·2015·Journal of Controlled Release

Abstract

In recent years, in vitro transcribed messenger RNA (mRNA) has emerged as a potential therapeutic platform. To fulfill its promise, effective delivery of mRNA to specific cell types and tissues needs to be achieved. Lipid nanoparticles (LNPs) are efficient carriers for short-interfering RNAs and have entered clinical trials. However, little is known about the potential of LNPs to deliver mRNA. Here, we generated mRNA-LNPs by incorporating HPLC purified, 1-methylpseudouridine-containing mRNA comprising codon-optimized firefly luciferase into stable LNPs. Mice were injected with 0.005-0.250mg/kg doses of mRNA-LNPs by 6 different routes and high levels of protein translation could be measured using in vivo imaging. Subcutaneous, intramuscular and intradermal injection of the LNP-encapsulated mRNA translated locally at the site of injection for up to 10days. For several days, high levels of protein production could be achieved in the lung from the intratracheal administration of mRNA. Intravenous and intraperitoneal and to a lesser extent intramuscular and intratracheal deliveries led to trafficking of mRNA-LNPs systemically resulting in active translation of the mRNA in the liver for 1-4 days. Our results demonstrate that LNPs are appropriate carriers for mRNA in vivo and have the potential to become valuable tools for delivering mRNA encoding therapeutic proteins.

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Crossref · 10.1016/j.jconrel.2015.08.007

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  • BNT162b2 is a lipid nanoparticle-formulated, nucleoside-modified RNA vaccine encoding a prefusion stabilized, membrane-anchored SARS-CoV-2 full-length spike protein.

    “BNT162b2 is a lipid nanoparticle–formulated, nucleoside-modified RNA vaccine that encodes a prefusion stabilized, membrane-anchored SARS-CoV-2 full-length spike protein.”

    From Safety and Efficacy of the BNT162b2 mRNA Covid-19 Vaccine (2020) · cites this paper as [5]

    The Materials and methods sections 2.3–2.4 describe nucleoside-modified mRNA encapsulated in lipid nanoparticles, supporting the general formulation described. But the mRNA studied encoded firefly luciferase; the paper does not identify BNT162b2 or describe a prefusion-stabilized, membrane-anchored SARS-CoV-2 spike protein. Page numbers are not available in our copy. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • LNP mRNA complexes have excellent biocompatibility and can transfect a variety of tissues and organs.

    “LNP mRNA complexes have excellent biocompatibility and can transfect a variety of tissues and organs (5–9).”

    From Lipid Nanoparticles Deliver mRNA to the Brain after an Intracerebral Injection (2023) · cites this paper as [5]

    The Results (§3.2; page unavailable) report mRNA-LNP-driven protein production in mouse liver, lung, and muscle, supporting delivery to multiple tissues and organs. The paper does not establish that the mRNA-LNP complexes have “excellent biocompatibility”; its Introduction describes safety evidence for similarly composed LNPs used to deliver siRNA, not the mRNA-LNP complexes studied here. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • mRNA vaccines have many different but convenient routes for vaccine administration, including subcutaneous, intramuscular, intradermal, intratracheal, intravenous and intraperitoneal routes.

    “This highlights one advantage of mRNA vaccines because it has many different but convenient routes for vaccine administration, including subcutaneous, intramuscular, intradermal, intratracheal, intravenous and intraperitoneal routes [31].”

    From Detailed Dissection and Critical Evaluation of the Pfizer/BioNTech and Moderna mRNA Vaccines (2021) · cites this paper as [31]

    The Discussion lists all six routes used to deliver nucleoside-modified mRNA-LNPs, and the Abstract reports protein expression after administration to mice. The study tested luciferase expression, not vaccine administration or whether these routes are convenient for vaccination. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • The expression pattern was similar to results from other LNP formulations.

    “which was similar to the results from other LNP formulations (Bahl et al., 2017; Pardi et al., 2015).”

    From A thermostable mRNA vaccine against COVID-19 (2020) · cites this paper as Pardi et al., 2015

  • Pardi et al. found that after intravenous injection of luciferase mRNA LNPs, the highest measured luminescence was at 0.2 days.

    “For instance, Pardi et al. found that after intravenous injection of luciferase mRNA LNPs, the highest measured luminescence was at 0.2 days.47”

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Authors
Pardi, N., Tuyishime, S., Muramatsu, H., Kariko, K., Mui, B. L., Tam, Y. K., Madden, T. D., Hope, M. J., & Weissman, D.
Affiliations
  • University of Pennsylvania (US)
  • Acuitas Therapeutics (Canada) (CA)
Corresponding author
Weissman, Drew
Venue
Journal of Controlled Release
Publisher
Elsevier BV
Published
2015-11
Volume
217
Pages
345-351
ISSN
0168-3659 (ISSN-L)
OpenAlex
W1420726270
Cited by
1,014
References
27
Citations by year
2026: 125 · 2025: 137 · 2024: 145 · 2023: 161 · 2022: 142 · 2021: 145 · 2020: 53 · 2019: 32 · 2018: 37 · 2017: 26 · 2016: 8 · 2015: 3
FWCI
9.73
Type
journal article
Language
en
Open access
Locations
  • Journal of Controlled Release (acceptedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
Bill and Melinda Gates Foundation CAVD (R01-AI-050484, R01-AI-090788)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
mRNA delivery, lipid nanoparticles, nucleoside-modified mRNA, firefly luciferase, codon optimization, in vivo gene expression, route of administration, intratracheal administration, intramuscular injection, intradermal injection, intravenous injection, intraperitoneal injection, subcutaneous injection, in vivo imaging
MeSH terms
Animals, Cells, Cultured, Dendritic Cells, Female, Humans, Kinetics, Lung, Mice, Inbred BALB C, Phosphatidylethanolamines, Pseudouridine, RNA, Messenger, Transfection, Luciferases, Firefly, Nanoparticles, HEK293 Cells

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