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Updated: Jul 7, 2026
10:53
Isolation of Cognate RNA-protein Complexes from Cells Using Oligonucleotide-directed Elution
Published on: January 16, 2017
Cytoplasmic recognition of RNA
Mitsutoshi Yoneyama1, Koji Onomoto, Takashi Fujita
1Laboratory of Molecular Genetics, Department of Genetics and Molecular Biology, Institute for Virus Research, Kyoto University, Kyoto, Japan.
Advanced Drug Delivery Reviews
|February 12, 2008
Summary
Cytoplasmic sensors known as RIG-I-like receptors (RLRs) detect viral RNA to trigger immune responses. Different viral RNA structures are recognized by specific RLRs, initiating immunity.
Area of Science:
- Immunology
- Virology
- Molecular Biology
Background:
- Non-self RNA from viral replication is recognized by cytoplasmic sensors.
- RIG-I-like receptors (RLRs), including RIG-I, MDA5, and LGP2, are key DExD/H helicase sensors.
- Understanding RLRs is crucial for deciphering innate antiviral immunity.
Purpose of the Study:
- To elucidate the domain structures of RLRs involved in non-self RNA detection.
- To explain how RLRs relay signals downstream for immune activation.
- To highlight the differential sensing of viral RNA species by RLRs.
Main Methods:
- Structural biology techniques to determine RLR domain organization.
- Biochemical assays to study RNA binding and helicase activity.
- Cell-based assays to assess RLR-mediated antiviral signaling.
Main Results:
- The domain structures of RLRs for RNA detection and signal transduction have been elucidated.
- RLRs exhibit differential recognition of various viral RNA structures.
- This differential sensing initiates distinct antiviral responses.
Conclusions:
- RLRs are critical sensors of viral RNA, initiating innate immunity.
- Structural insights into RLRs explain their RNA recognition mechanisms.
- Differential viral RNA sensing by RLRs is fundamental to initiating adaptive immunity.
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