Related Experiment Video
Updated: Jan 9, 2026
08:55
The Colon-26 Carcinoma Tumor-bearing Mouse as a Model for the Study of Cancer Cachexia
Published on: November 30, 2016
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PDE4 modulates muscle signaling in cancer cachexia
Renming Fan1, Bingjie Zhang1, Gaofei Wei1
1Laboratory of Cellular Metabolism and Precision Therapeutics, Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China; Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China.
Trends in Pharmacological Sciences
|December 10, 2025
Summary
Cancer cachexia causes muscle wasting via mitochondrial dysfunction. Inhibiting phosphodiesterase 4 (PDE4) restored mitochondrial function by targeting the cAMP-protein kinase A (PKA)-CREB1 axis, offering a potential treatment for cachexia.
Area of Science:
- Biochemistry
- Cell Biology
- Oncology
Background:
- Cancer cachexia is characterized by a bioenergetic crisis and muscle wasting.
- Mitochondrial dysfunction is an early event in the development of cancer cachexia.
- Tumor-derived signals play a critical role in mediating these pathological processes.
Purpose of the Study:
- To investigate the molecular mechanisms underlying tumor-induced mitochondrial dysfunction in cancer cachexia.
- To identify potential therapeutic targets for mitigating muscle wasting in cancer cachexia.
Main Methods:
- Analysis of the cAMP-protein kinase A (PKA)-CREB1 signaling pathway in muscle tissue.
- Assessment of mitochondrial function and homeostasis.
- Pharmacological inhibition of phosphodiesterase 4 (PDE4) to restore cAMP signaling.
Main Results:
- Tumor-derived signals were found to suppress the cAMP-PKA-CREB1 axis.
- This suppression led to the destabilization of mitochondrial homeostasis and impaired energy production.
- Inhibition of PDE4 successfully restored cAMP signaling and rescued mitochondrial function.
Conclusions:
- The cAMP-PKA-CREB1 axis is a key mediator of mitochondrial dysfunction in cancer cachexia.
- Targeting PDE4 represents a promising therapeutic strategy to combat muscle wasting and bioenergetic deficits in cancer patients.
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