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Updated: Apr 11, 2026
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Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency
Published on: June 16, 2011
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tRNA modifications in viral replication
Chathuri Pathirage1, Kristin S Koutmou1, Karin Musier-Forsyth2
1Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA.
The Journal of Biological Chemistry
|April 9, 2026
Summary
Viral infections alter transfer RNA (tRNA) modifications, impacting gene expression and viral replication. Understanding these tRNA changes is crucial for developing antiviral strategies.
Area of Science:
- Molecular Biology
- Virology
- Genetics
Background:
- Transfer RNAs (tRNAs) and their modifications are critical for gene expression, especially under stress conditions like viral infection.
- Viral infections can significantly alter host cell tRNA pools and modification patterns, influencing both host and viral processes.
- These alterations can affect viral protein production, reverse transcription, and innate antiviral responses.
Purpose of the Study:
- To explore the multifaceted roles of tRNA modifications during viral infections.
- To highlight how changes in tRNA modifications can reprogram host and viral proteomes.
- To emphasize the need for global tRNAome analysis to understand viral-host interactions.
Main Methods:
- Review of existing literature on tRNA modifications in viral infections.
- Analysis of mechanisms by which tRNA modifications influence viral replication and host defense.
- Discussion of emerging technologies for tRNAome analysis, including direct tRNA sequencing and mass spectrometry.
Main Results:
- tRNA modifications are involved in programmed ribosomal frameshifting for viral protein synthesis.
- Host tRNAs are used as primers for retroviral reverse transcription, with modifications potentially regulating this process.
- Viruses can manipulate tRNA modification enzymes, and some modified tRNAs are packaged into virions.
- tRNA modifications play a role in antiviral defense, such as through the generation of tRNA-derived fragments.
Conclusions:
- Host tRNA modifications are significantly altered during viral infections, impacting multiple stages of the viral life cycle.
- Further global tRNAome analyses are necessary to fully elucidate the functional implications of these modifications.
- Emerging technologies offer promising avenues for comprehensive tRNA modification profiling in the context of viral infections.
Keywords:
RNA modificationanti-viral immune responsecodon usagereverse transcriptiontRNA-derived RNA (tDR)tRNA-like structures (TLS)tRNA-modifying enzymestransfer RNA (tRNA)translation regulationviral replicationMore Related Videos
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