Phosphodiesterase 4 regulates the migration of B16-F10 melanoma cells

Watanabe,Yoshihiro; Murata,Taku; Shimizu,Kasumi; Morita,Hiroshi; Inui,Madoka; Tagawa,Toshiro

doi:10.3892/etm.2012.587

August 2012 Volume 4 Issue 2

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August 2012 Volume 4 Issue 2

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Article

Phosphodiesterase 4 regulates the migration of B16-F10 melanoma cells

Authors:
- Yoshihiro Watanabe
- Taku Murata
- Kasumi Shimizu
- Hiroshi Morita
- Madoka Inui
- Toshiro Tagawa
View Affiliations / Copyright

Affiliations: Department of Oral and Maxillofacial Surgery, Division of Reparative and Regenerative Medicine, Institute of Medical Science, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan
Pages: 205-210
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Published online on: May 23, 2012

https://doi.org/10.3892/etm.2012.587
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Abstract

Phosphodiesterases (PDEs) are important regulators of signal transduction processes. Eleven PDE gene families (PDE1-11) have been identified and several PDE isoforms are selectively expressed in various cell types. PDE4 family members specifically hydrolyze cyclic AMP (cAMP). Four genes (PDE4A-D) are known to encode PDE4 enzymes, with additional diversity generated by the use of alternative mRNA splicing and the use of different promoters. While PDE4 selective inhibitors show therapeutic potential for treating major diseases such as asthma and chronic obstructive pulmonary disease, little is known concerning the role of PDE4 in malignant melanoma. In this study, we examined the role of PDE4 in mouse B16-F10 melanoma cells. In these cells, PDE4 activity was found to be ~60% of total PDE activity. RT-PCR detected only PDE4B and PDE4D mRNA. Cell growth was inhibited by the cAMP analog, 8-bromo-cAMP, but not by the specific PDE4 inhibitors, rolipram and denbufylline, which increased intracellular cAMP concentrations. Finally, migration of the B16-F10 cells was inhibited by the PDE4 inhibitors and 8-bromo-cAMP, while migration was increased by a protein kinase A (PKA) inhibitor, PKI14-22, and was not affected by 8-pCPT-2'-O-Me-cAMP, which is an analog of exchange protein activated by cAMP (Epac). The inhibitory effect of rolipram on migration was reversed by PKI14-22. Based on these results, PDE4 appears to play an important role in the migration of B16-F10 cells, and therefore may be a novel target for the treatment of malignant melanoma.

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Journals

International Journal of Molecular Medicine

International Journal of Oncology

Molecular Medicine Reports

Oncology Reports

Experimental and Therapeutic Medicine

Oncology Letters

Biomedical Reports

Molecular and Clinical Oncology

World Academy of Sciences Journal

International Journal of Functional Nutrition

International Journal of Epigenetics

Medicine International

Phosphodiesterase 4 regulates the migration of B16-F10 melanoma cells

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