The dynamic interactions between virus infections and nonsense-mediated decay
Teun van der Klugt1, Michiel van Gent1
1HerpesLabNL, Department of Viroscience, Erasmus Medical Center, Dr. Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands.
Human Molecular Genetics
|April 28, 2025
Summary
Nonsense-mediated decay (NMD) is a host defense that fights viral infections by degrading viral RNA. Viruses counter this by manipulating NMD to aid their own replication.
Area of Science:
- Molecular Biology
- Virology
- Immunology
Background:
- Humans face constant viral threats causing significant illness and death.
- Nonsense-mediated decay (NMD) is a conserved RNA degradation pathway in hosts.
- NMD has recently been recognized as a key antiviral defense mechanism.
Purpose of the Study:
- To review the role of NMD in controlling viral infections.
- To outline viral strategies for interfering with NMD.
Main Methods:
- Review of existing literature on NMD and viral interactions.
- Analysis of molecular mechanisms of NMD antiviral activity.
- Examination of viral evasion strategies targeting NMD.
Main Results:
- NMD directly degrades viral RNA, including genomic RNA and transcripts.
- NMD regulates host transcripts, contributing to antiviral defense.
- Viruses have evolved mechanisms to subvert NMD for their own benefit.
Conclusions:
- NMD acts as a critical host defense against a wide range of viruses.
- Viral manipulation of NMD highlights a complex host-pathogen interplay.
- Understanding NMD-virus interactions is crucial for developing antiviral strategies.
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