Cited by 376Immunotherapy and Immune ResponsesRNA Interference and Gene DeliveryImmune Response and Inflammation

Tailoring mRNA Vaccine to Balance Innate/Adaptive Immune Response

Open access
Linares-Fernández, Sergio, Lacroix, Céline, Exposito, Jean-Yves, Verrier, Bernard·2020·Trends in Molecular Medicine

Abstract

mRNA vaccine platforms present numerous advantages, such as versatility, rapid production, and induction of cellular and humoral responses. Moreover, mRNAs have inherent adjuvant properties due to their complex interaction with pattern recognition receptors (PRRs). This recognition can be either beneficial in activating antigen-presenting cells (APCs) or detrimental by indirectly blocking mRNA translation. To decipher this Janus effect, we describe the different innate response mechanisms triggered by mRNA molecules and how each element from the 5' cap to the poly-A tail interferes with innate/adaptive immune responses. Then, we emphasize the importance of some critical steps such as production, purification, and formulation as key events to further improve the quality of immune responses and balance innate and adaptive immunity.

Integrity signals

Registry

Crossref · 10.1016/j.molmed.2019.10.002

Cites

91 of 91 references verified0 citation errors · 0 not checkable

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  • UTRs can influence mRNA translation efficiency and resistance to degradation by interacting with RNA-binding proteins and microRNAs.

    “It is known that UTRs are associated with processes of mRNA translation, and by interacting with RNA-binding proteins (RBPs) and microRNAs, UTRs can influence mRNA’s translation efficiency and resistance to degradation [3,4,5,6,7].”
  • The use of CleanCap® cap analogs reduces the probability of reverse capped, uncapped, and cap0 intermediates, and the co-transcribed mRNA only possesses a cap1 structure, therefore capping rate can be 90% or higher.

    “The use of CleanCap® cap analogs reduces the probability of reverse capped, uncapped, and cap0 intermediates, and the co-transcribed mRNA only possesses a cap1 structure, therefore capping rate can be 90% or higher.52,126”

    From Advances in COVID-19 mRNA vaccine development (2022) · cites this paper as [52]

  • The vaccinia capping enzyme (VCE) integrates the enzymatic activity of RTPase, GTase, and G-N7 MTase, which can be capped to generate a cap0 structure, and then 2′-O-MTase can be used to generate a methylated cap1 structure, thus reaching a capping efficiency of 100%.

    “The vaccinia capping enzyme (VCE) integrates the enzymatic activity of RTPase, GTase, and G-N7 MTase, which can be capped to generate a cap0 structure, and then 2′-O-MTase can be used to generate a methylated cap1 structure, thus reaching a capping efficiency of 100%.52”

    From Advances in COVID-19 mRNA vaccine development (2022) · cites this paper as [52]

  • dsRNA can activate PRR such as TLR3, whereas ssRNA activates TLR7 and TLR8 to produce IFN-I, thus inducing inflammation in the host and interrupting mRNA translation.

    “dsRNA can activate PRR such as TLR3,52,156 whereas ssRNA activates TLR7 and TLR8 to produce IFN-I, thus inducing inflammation in the host and interrupting mRNA translation.157,158”

    From Advances in COVID-19 mRNA vaccine development (2022) · cites this paper as [52]

  • Currently, nucleoside-modified mRNA vaccines employ 100% chemically modified nucleosides replacing natural nucleosides, and m1ψ is often used to replace uridine during IVT to improve the safety and stability of mRNA vaccines.

    “Currently, nucleoside-modified mRNA vaccines employ 100% chemically modified nucleosides replacing natural nucleosides, and m1ψ is often used to replace uridine during IVT to improve the safety and stability of mRNA vaccines.52,134,172”

    From Advances in COVID-19 mRNA vaccine development (2022) · cites this paper as [52]

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Authors
Linares-Fernández, S., Lacroix, C., Exposito, J.-Y., & Verrier, B.
Affiliations
Lyon 1 Université (FR)
Corresponding author
Verrier, Bernard
Venue
Trends in Molecular Medicine
Publisher
Elsevier BV
Published
2020-03
Volume
26
Issue
3
Pages
311-323
ISSN
1471-4914 (ISSN-L)
OpenAlex
W2986812831
Cited by
376
References
92
Citations by year
2026: 43 · 2025: 67 · 2024: 65 · 2023: 69 · 2022: 76 · 2021: 47 · 2020: 9
FWCI
2.84
Type
journal article
Language
en
Open access
Locations
  • Trends in Molecular Medicine (acceptedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
  • EuroNanoMed III
  • Agence Nationale de Recherches sur le Sida et les Hépatites Virales
  • Fondation Mérieux
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
mRNA vaccines, innate immune response, adaptive immune response, pattern recognition receptors, antigen-presenting cells, 5' cap, poly(A) tail, mRNA translation inhibition, vaccine formulation
MeSH terms
mRNA Vaccines, Animals, Humans, Immunity, Innate, RNA, Messenger, Vaccines, Synthetic, Receptors, Pattern Recognition, Adaptive Immunity

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