Abstract | OBJECTIVES:
Phosphodiesterase 9 (PDE9) is a major isoform of phosphodiesterase hydrolysing cGMP and plays a key role in proliferation of cells, their differentiation and apoptosis, via intracellular cGMP signalling. The study described here was designed to investigate expression, activity and apoptotic effect of PDE9 on human breast cancer cell lines, MCF-7 and MDA-MB-468. MATERIALS AND METHODS: Activity and expression of PDE9 were examined using colorimetric cyclic nucleotide phosphodiesterase assay and real-time RT-PCR methods respectively; cGMP concentration was also measured. MTT viability test, annexin V-FITC staining, Hoechst 33258 staining and caspase3 activity assay were used to detect apoptosis. RESULTS: Treatment of both cell lines with BAY 73-6691 lead to reduction in PDE9 mRNA expression, PDE9 cGMP-hydrolytic activity and elevation of the intracellular cGMP response. BAY 73-6691 significantly reduced cell proliferation in a dose- and time-dependent manner and caused marked increase in apoptosis through caspase3 activation. CONCLUSION:
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Authors | R Saravani, F Karami-Tehrani, M Hashemi, M Aghaei, R Edalat |
Journal | Cell proliferation
(Cell Prolif)
Vol. 45
Issue 3
Pg. 199-206
(Jun 2012)
ISSN: 1365-2184 [Electronic] England |
PMID | 22469131
(Publication Type: Journal Article)
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Copyright | © 2012 Blackwell Publishing Ltd. |
Chemical References |
- BAY 73-6691
- Enzyme Inhibitors
- Pyrazoles
- Pyrimidines
- 3',5'-Cyclic-AMP Phosphodiesterases
- PDE9A protein, human
- Caspase 3
- Cyclic GMP
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Topics |
- 3',5'-Cyclic-AMP Phosphodiesterases
(antagonists & inhibitors, genetics, metabolism)
- Apoptosis
(drug effects)
- Breast Neoplasms
(enzymology, metabolism, pathology)
- Caspase 3
(metabolism)
- Cell Line, Tumor
- Cell Proliferation
(drug effects)
- Cyclic GMP
(metabolism)
- Dose-Response Relationship, Drug
- Enzyme Inhibitors
(chemistry, pharmacology)
- Female
- Humans
- Pyrazoles
(chemistry, pharmacology)
- Pyrimidines
(chemistry, pharmacology)
- Signal Transduction
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