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Phosphatidylinositol 3-Kinase Inhibitor LY294002 Suppresses Proliferation and Sensitizes Doxorubicin Chemotherapy in Bladder Cancer Cells.
- Source :
- Urologia Internationalis; Aug2011, Vol. 87 Issue 1, p105-113, 9p, 1 Chart, 5 Graphs
- Publication Year :
- 2011
-
Abstract
- Background: Phosphatidylinositol 3-kinase (PI3K)-AKT signaling is a well-characterized pathway involved in the control of cell proliferation, apoptosis and oncogenesis. LY294002 is a commonly used pharmacologic inhibitor which acts at the ATP-binding site of the PI3K enzyme, thus selectively inhibiting the PI3K-AKT nexus. The purpose of the present study was to examine whether PI3K inhibited by LY294002 had an effect on human bladder cancer cells. Methods: After treatment with LY294002, MTT assay, chemosensitivity test, colony formation assay, apoptosis assay and Western blot analysis were conducted in EJ cells. Result: EJ cells treated with LY294002 showed significant AKT phosphorylation suppression in a dose-response manner. Also, PI3K/AKT signaling inhibitor LY294002 suppressed cell proliferation and enhanced the chemosensitivity of doxorubicin in human bladder cancer EJ cells. Furthermore, LY294002 increased cell apoptosis to doxorubicin. Conclusion: The augmentation of doxorubicin with PI3K inhibitor LY294002 may resolve the multidrug resistance of bladder cancer, and this may be a new strategy for achieving tolerance for chemotherapeutic agents in bladder cancer therapy. Copyright © 2011 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00421138
- Volume :
- 87
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Urologia Internationalis
- Publication Type :
- Academic Journal
- Accession number :
- 64064953
- Full Text :
- https://doi.org/10.1159/000322849