Cited by 354RNA Interference and Gene DeliveryRNA and protein synthesis mechanismsImmunotherapy and Immune Responses

Impact of mRNA chemistry and manufacturing process on innate immune activation

Open access
Nelson, Jennifer, Sorensen, Elizabeth W., Mintri, Shrutika, Rabideau, Amy E., Zheng, Wei, Besin, Gilles, Khatwani, Nikhil, Su, Stephen V. +5 more·2020·Science Advances

Abstract

1-methyl-pseudouridine (1mΨ), synthesized by either a standard process shown to have double-stranded RNA (dsRNA) impurities or a modified process that yields a highly purified mRNA preparation. Our data demonstrate that the lowest stimulation of immune endpoints was with 1mΨ made by the modified process, while mRNA containing canonical uridine was immunostimulatory regardless of process. These findings confirm that uridine modification and the reduction of dsRNA impurities are both necessary and sufficient at controlling the immune-activating profile of therapeutic mRNA.

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Crossref · 10.1126/sciadv.aaz6893

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  • Moderna claimed that with modified nucleotide and dsRNA removal, both local and systemic innate immune effects upon mRNA vaccine administration can be limited to a bare minimum in mice.

    “Moderna claimed that with such an approach, both local and systemic innate immune effects upon mRNA (vaccine) administration can be limited to a bare minimum in mice [37]”

    From The dawn of mRNA vaccines: the COVID-19 case (2021) · cites this paper as [37]

  • BNT162b2 and mRNA-1273 implement a combination of modified nucleotide 1mΨ replacement and removal of dsRNA fragments, which strongly reduces innate immune signaling in response to mRNA through decreased activation of TLR signaling and cytosolic RNA sensors.

    “BNT162b2 and mRNA-1273 implement a combination of modified nucleotide 1mΨ replacement and removal of dsRNA fragments in the mRNA production process, which strongly reduces the innate immune signaling in response to mRNA through decreased activation of TLR signaling and cytosolic RNA sensors.”

    From The dawn of mRNA vaccines: the COVID-19 case (2021) · cites this paper as [37]

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Authors
Nelson, J., Sorensen, E. W., Mintri, S., Rabideau, A. E., Zheng, W., Besin, G., Khatwani, N., Su, S. V., Miracco, E. J., Issa, W. J., Hoge, S., Stanton, M. G., & Joyal, J. L.
Affiliations
Moderna Inc., 200 Technology Square, Cambridge, MA, USA.
Corresponding author
Joyal, John L.
Venue
Science Advances
Published
2020-06-26
Volume
6
Issue
26
Pages
eaaz6893-eaaz6893
ISSN
2375-2548 (ISSN-L)
OpenAlex
W3037578051
Cited by
354
References
51
Citations by year
2026: 51 · 2025: 57 · 2024: 66 · 2023: 59 · 2022: 74 · 2021: 44 · 2020: 2
FWCI
14.45
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Science Advances (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
Moderna, Inc.
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
mRNA vaccines, production process, innate immune activation, immune enhancement

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