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Experimental Exploration for Genes Related to Susceptibility and Resistance to Irinotecan
Suguru Ogata1, Tomoya Sudou1, Fumihiko Fujita2
1Department of Surgery, Kurume University School of Medicine, Kurume, Japan ogata_suguru@kurume-u.ac.jp sudou_tomoya@kurume-u.ac.jp.
Background/Aim:
Anticancer drug resistance is an important issue in cancer treatment. Multiple genes are thought to be involved in resistance to anticancer drugs; however, this is still not fully understood. This study aimed to identify the genes involved in irinotecan resistance and their functional characteristics.
Materials And Methods:
Gene trap insertion mutant Chinese hamster ovary (CHO) cells were used in the experiments, and next-generation sequencing, gene-ontology enrichment, and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were used to evaluate the biological functions of differentially expressed genes (DEGs).
Results:
In total, 2,134 DEGs were identified, including 1,216 up-regulated and 918 down-regulated genes. In KEGG pathways, microRNAs in cancer were significantly associated with up-regulated DEGs, while spliceosome and p53 signaling pathways were significantly associated with down-regulated DEGs. The pathway analysis identified several genes that might be involved in irinotecan resistance.
Conclusion:
Using CHO cells, the genes involved in irinotecan resistance and functional characteristics were predicted. These results provide new clues for predicting irinotecan resistance.
Insights
Researchers identified genes linked to anticancer drug resistance using gene analysis in Chinese hamster ovary cells. This study offers new insights into predicting irinotecan resistance, a crucial factor in cancer treatment.
Area of Science:
- Genomics and Molecular Biology
- Cancer Research
- Pharmacology
Background:
- Anticancer drug resistance poses a significant challenge in cancer therapy.
- The genetic underpinnings of drug resistance are not fully elucidated.
- Understanding these mechanisms is critical for improving treatment efficacy.
Purpose of the Study:
- To identify genes contributing to irinotecan resistance.
- To characterize the functional roles of these identified genes.
- To provide a basis for predicting irinotecan resistance.
Main Methods:
- Utilized gene trap insertion mutant Chinese hamster ovary (CHO) cells.
- Employed next-generation sequencing for comprehensive gene analysis.
- Conducted gene-ontology and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses on differentially expressed genes (DEGs).
Main Results:
- Identified 2,134 differentially expressed genes (DEGs), with 1,216 up-regulated and 918 down-regulated.
- KEGG pathway analysis revealed significant associations between up-regulated DEGs and microRNAs in cancer.
- Down-regulated DEGs were significantly associated with spliceosome and p53 signaling pathways, suggesting their potential role in irinotecan resistance.
Conclusions:
- Successfully predicted genes involved in irinotecan resistance and their functional characteristics in CHO cells.
- The findings offer novel insights for the prediction of irinotecan resistance.
- This research lays the groundwork for future studies on overcoming drug resistance in cancer treatment.
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