Cited by 2,474interferon and immune responsesImmune Response and InflammationRNA regulation and disease

5'-Triphosphate RNA Is the Ligand for RIG-I

Hornung, Veit, Ellegast, Jana, Kim, Sarah, Brzózka, Krzysztof, Jung, Andreas, Kato, Hiroki, Poeck, Hendrik, Akira, Shizuo +4 more·2006·Science

Abstract

The structural basis for the distinction of viral RNA from abundant self RNA in the cytoplasm of virally infected cells is largely unknown. We demonstrated that the 5′-triphosphate end of RNA generated by viral polymerases is responsible for retinoic acid–inducible protein I (RIG-I)–mediated detection of RNA molecules. Detection of 5′-triphosphate RNA is abrogated by capping of the 5′-triphosphate end or by nucleoside modification of RNA, both occurring during posttranscriptional RNA processing in eukaryotes. Genomic RNA prepared from a negative-strand RNA virus and RNA prepared from virus-infected cells (but not from noninfected cells) triggered a potent interferon-α response in a phosphatase-sensitive manner. 5′-triphosphate RNA directly binds to RIG-I. Thus, uncapped 5′-triphosphate RNA (now termed 3pRNA) present in viruses known to be recognized by RIG-I, but absent in viruses known to be detected by MDA-5 such as the picornaviruses, serves as the molecular signature for the detection of viral infection by RIG-I.

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Crossref · 10.1126/science.1132505

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19 of 19 references verified0 citation errors · 0 not checkable

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  • Several RNA structural features are immunostimulatory due to interactions with RNA sensors such as Toll-like receptors, RIG-I, and PKR.

    “However, several RNA structural features have been described as immunostimulatory due to interactions with various RNA sensors such as Toll-like receptors, RIG-I, and PKR.”
  • ψ and m1ψ substitutions for U have been widely adopted for mRNA therapeutics and vaccines due to improved in-cell translation and better control of innate immune responses.

    “In particular, we focused on ψ and m1ψ, since these substitutions for U have been widely adopted for mRNA therapeutics and vaccines due to improved in-cell translation and to better control of innate immune responses2,3,8,67 through avoidance of recognition by cellular toll-like receptors (TLR7 and TLR8)68, RIG‑I, and PKR69–71.”
  • Nucleoside-modified mRNA can reduce the activation of TLRs, retinoic acid-inducible gene I (RIG-I), protein kinase R (PKR), and 2′-5′-oligoadenylate synthetase (OAS); additionally, nucleoside modification increases translation activity and resistance against RNase L-mediated degradation.

    “Nucleoside-modified mRNA can reduce the activation of TLRs, retinoic acid-inducible gene I (RIG-I), protein kinase R (PKR), and 2′-5′-oligoadenylate synthetase (OAS). Additionally, nucleoside modification increases translation activity and resistance against RNase L-mediated degradation.54,81,173–176”

    From Advances in COVID-19 mRNA vaccine development (2022) · cites this paper as [54]

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Authors
Hornung, V., Ellegast, J., Kim, S., Brzózka, K., Jung, A., Kato, H., Poeck, H., Akira, S., Conzelmann, K.-K., Schlee, M., Endres, S., & Hartmann, G.
Affiliations
  • University of Bonn (DE)
  • Division of Clinical Pharmacology, Department of Internal Medicine, University of Munich, 80336 Munich, Germany.
Corresponding author
Hartmann, Gunther
Venue
Science
Published
2006-11-10
Volume
314
Issue
5801
Pages
994-997
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2017515700
Cited by
2,474
References
19
Citations by year
2026: 66 · 2025: 88 · 2024: 105 · 2023: 83 · 2022: 108 · 2021: 122 · 2020: 115 · 2019: 127 · 2018: 104 · 2017: 94 · 2016: 103 · 2015: 117 · 2014: 148 · 2013: 153 · 2012: 143
FWCI
58.24
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
Keywords
RIG-I, 5'-triphosphate RNA, RNA sensing, antiviral innate immunity, interferon-alpha, viral RNA detection, RNA capping, MDA5, negative-strand RNA viruses, picornavirus
MeSH terms
DEAD Box Protein 58, Animals, Cell Line, Cells, Cultured, Cytosol, Humans, Ligands, Monocytes, Oligoribonucleotides, Phosphates, Phosphorylation, Rabies virus, Receptors, Immunologic, RNA, RNA Caps, DNA-Directed RNA Polymerases, RNA, Double-Stranded, RNA, Viral, Transcription, Genetic, Transfection, Viral Proteins, Virus Replication, Interferon-alpha, Interferon-beta, Mice, DEAD-box RNA Helicases

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