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Updated: Jul 25, 2025

Oncogene Expression Analysis with Alterations in pH in a Pancreatic Ductal Cell Line
Published on: April 11, 2025
PPAR/PDK4 pathway is involved in the anticancer effects of cGMP in pancreatic cancer
Mai Yamashita1, Motofumi Kumazoe1, Hiroaki Onda1
1Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan.
Abstract:
Pancreatic ductal adenocarcinoma (PDAC) is a type of cancer with a high mortality rate. Current treatments for PDACs often have side effects, and drug resistance in cancer stem cells (CSCs) would be also a problem. Cyclic guanosine monophosphate (cGMP) suppresses the mitochondrial function of PDACs and inhibits their CSC properties. Metabolic regulation plays a crucial role in the maintenance of CSC phenotype, and we hypothesized that cGMP induction suppresses cancer stem cell properties in the cancer cell through energy-related signaling pathways. We demonstrated that induction of cGMP upregulated the PPARα/PDK4 pathway and suppressed CSC properties in PDAC, and patients with pancreatic cancer with high PDK4 gene expression had a better prognosis than those with low gene expression. Therefore, these mechanisms may provide new therapeutic targets for the eradication of pancreatic CSCs.
Insights
Cyclic guanosine monophosphate (cGMP) targets cancer stem cells in pancreatic cancer by upregulating the PPARα/PDK4 pathway. This discovery offers potential new therapeutic strategies for pancreatic ductal adenocarcinoma (PDAC) treatment.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Metabolism
Background:
- Pancreatic ductal adenocarcinoma (PDAC) presents a high mortality rate and challenges with treatment side effects and drug resistance in cancer stem cells (CSCs).
- Cancer stem cells (CSCs) are crucial drivers of tumor progression and treatment failure in PDAC.
- Metabolic dysregulation is fundamental to maintaining the CSC phenotype.
Purpose of the Study:
- To investigate the role of cyclic guanosine monophosphate (cGMP) in suppressing CSC properties within PDAC.
- To explore the hypothesis that cGMP induction combats CSCs via energy-related signaling pathways.
- To identify potential therapeutic targets for eradicating pancreatic CSCs.
Main Methods:
- Induction of cGMP in PDAC cells.
- Analysis of the PPARα/PDK4 signaling pathway.
- Correlation of PDK4 gene expression with patient prognosis in pancreatic cancer.
Main Results:
- cGMP induction was shown to upregulate the PPARα/PDK4 pathway.
- Suppression of CSC properties in PDAC was observed following cGMP induction.
- Higher PDK4 gene expression in pancreatic cancer patients correlated with a better prognosis.
Conclusions:
- The PPARα/PDK4 pathway, modulated by cGMP, plays a significant role in suppressing pancreatic CSC properties.
- PDK4 gene expression serves as a potential prognostic biomarker for pancreatic cancer.
- Targeting cGMP-mediated pathways presents a promising therapeutic avenue for pancreatic CSCs.
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