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Updated: Jan 3, 2026

Studying RNA Interactors of Protein Kinase RNA-Activated during the Mammalian Cell Cycle
Published on: March 5, 2019
The RNA degradation pathway is involved in PPARα-modulated anti-oral tumorigenesis
Nai-Wen Chang1, Yi-Ping Huang2
1Department of Biochemistry, College of Medicine, China Medical University, Taichung 404, Taiwan.
Background:
The activation of peroxisome proliferator-activated receptor alpha (PPARα) has been shown to reprogram tumor metabolism and exhibits great potential for treating anti-oral tumorigenesis.
Methods:
In this study, we used a pathway-based strategy to explore possible functional pathways involved in the anticancer activity of PPARα in oral cancer cells through next-generation sequencing (NGS) and bioinformatic approaches.
Results:
We found that 3919 genes were upregulated and 1060 genes were downregulated through PPARα activation. These genes were mainly involved in the proteasomal, mRNA surveillance, spliceosomal, RNA transport, and RNA degradation pathways, as indicated by GO and KEGG enrichment analysis. Importantly, a total of 13 upregulated genes in the RNA degradation pathway were identified including 3 core exosome factor genes (RRP43, RRP42, and CSL4), 2 TRAMP complex genes (TRF4 and Mtr4), 2 exosome cofactor genes (RRP6 and MPP6), 2 CCR4-NOT complex genes (CNOT2 and CNOT3), 2 Ski complex genes (SKI2 and Ski3), 1 decapping complex gene (EDC4), and 1 gene involved in 5' exoribonuclease activity (XRN1).
Conclusion:
Our findings suggest that the activation of PPARα to upregulate the RNA degradation pathway might provide a new strategy for oral cancer treatment.
Insights
Activating peroxisome proliferator-activated receptor alpha (PPARα) reprograms oral tumor metabolism. Upregulating the RNA degradation pathway via PPARα activation presents a novel therapeutic strategy for oral cancer.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Peroxisome proliferator-activated receptor alpha (PPARα) activation influences tumor metabolism.
- PPARα shows potential in treating oral tumorigenesis.
Purpose of the Study:
- To investigate functional pathways affected by PPARα activation in oral cancer.
- To explore the anticancer mechanisms of PPARα in oral cancer cells.
Main Methods:
- Utilized a pathway-based strategy for analysis.
- Employed next-generation sequencing (NGS) and bioinformatic approaches.
- Conducted Gene Ontology (GO) and KEGG enrichment analysis.
Main Results:
- PPARα activation led to 3919 upregulated and 1060 downregulated genes.
- Key affected pathways include proteasomal, mRNA surveillance, spliceosomal, RNA transport, and RNA degradation.
- Identified 13 upregulated genes in the RNA degradation pathway, including exosome, TRAMP, CCR4-NOT, and Ski complex components.
Conclusions:
- PPARα activation upregulates the RNA degradation pathway in oral cancer cells.
- This suggests a potential new therapeutic strategy for oral cancer treatment.
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