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A novel mechanism for the loss of mRNA activity in lipid nanoparticle delivery systems

Author

Listed:
  • Meredith Packer

    (Moderna, Inc., 200 Technology Square)

  • Dipendra Gyawali

    (Moderna, Inc., 200 Technology Square)

  • Ravikiran Yerabolu

    (Moderna, Inc., 200 Technology Square)

  • Joseph Schariter

    (Moderna, Inc., 200 Technology Square)

  • Phil White

    (Moderna, Inc., 200 Technology Square)

Abstract

Lipid nanoparticle (LNP)-formulated mRNA vaccines were rapidly developed and deployed in response to the SARS-CoV-2 pandemic. Due to the labile nature of mRNA, identifying impurities that could affect product stability and efficacy is crucial to the long-term use of nucleic-acid based medicines. Herein, reversed-phase ion pair high performance liquid chromatography (RP-IP HPLC) was used to identify a class of impurity formed through lipid:mRNA reactions; such reactions are typically undetectable by traditional mRNA purity analytical techniques. The identified modifications render the mRNA untranslatable, leading to loss of protein expression. Specifically, electrophilic impurities derived from the ionizable cationic lipid component are shown to be responsible. Mechanisms implicated in the formation of reactive species include oxidation and subsequent hydrolysis of the tertiary amine. It thus remains critical to ensure robust analytical methods and stringent manufacturing control to ensure mRNA stability and high activity in LNP delivery systems.

Suggested Citation

  • Meredith Packer & Dipendra Gyawali & Ravikiran Yerabolu & Joseph Schariter & Phil White, 2021. "A novel mechanism for the loss of mRNA activity in lipid nanoparticle delivery systems," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26926-0
    DOI: 10.1038/s41467-021-26926-0
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    References listed on IDEAS

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    1. Juan I. Garaycoechea & Gerry P. Crossan & Frédéric Langevin & Lee Mulderrig & Sandra Louzada & Fentang Yang & Guillaume Guilbaud & Naomi Park & Sophie Roerink & Serena Nik-Zainal & Michael R. Stratton, 2018. "Alcohol and endogenous aldehydes damage chromosomes and mutate stem cells," Nature, Nature, vol. 553(7687), pages 171-177, January.
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