ArticleProceedings of the National Academy of Sciences of the United States of America2026
Nonsense-mediated decay controls a negative feedback loop in innate immune sensing.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- A targetable dependency on nonsense-mediated decay for cellular homeostasis and immune control in small cell lung cancer.Molecular cancer · 2026Article
- A dual-pronged host-directed therapeutic targeting cyclophilin A and pathogenic interferon response abrogates virus-triggered pregnancy pathologies.Nature communications · 2026Article
- Nonsense-mediated mRNA decay and associated splicing patterns in neurodevelopmental disorders.Frontiers in molecular biosciences · 2026Review
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7 authors.
Funding
Abstract
Nonsense-mediated decay (NMD) is an mRNA decay pathway which degrades potential harmful transcripts that contain premature termination codons. However, NMD's importance also extends to the control of isoform abundance under physiological conditions. During viral infection, NMD is inhibited through numerous mechanisms; however, NMD has been shown to have both antiviral as well as proviral activities, raising further questions into the role and control of NMD during viral infection. These observations have led us to investigate the potential involvement of NMD in dsRNA sensing as a mechanism that might explain these discrepancies. Using EIF4A2 exon 10B inclusion as an example of AS-NMD isoform accumulating during viral infection, we show that dsRNA sensing inhibits NMD. This effect is correlated with translational blockade and is driven primarily by RNaseL activation, and by PKR in the absence of RNaseL activation. Surprisingly, NMD inhibition limits the induction of IFN-β as well as interferon-stimulated genes, and this effect is upstream of IRF3 phosphorylation and translocation to the nucleus. NMD inhibition also decreases PKR and RNaseL activation as well as PIC-mediated cell death by decreasing the dsRNA content, suggesting NMD directly controls dsRNA sensing by controlling the dsRNA load. Therefore, inhibition of NMD upon dsRNA sensing provides a negative feedback loop that contributes to shaping the innate immune sensing pathways.
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