Abstract
Circadian rhythms are the daily oscillations of multiple biological processes regulated by an endogenous clock. The Period! gene is essential in controlling the circadian rhythm and plays an important role in tumor suppression. We examined whether the overexpression of the mouse Period! gene (mPer2) in cultured tumor cells from human tissues inhibits cell growth, using the recombinant adenovirus vector AdmPer2. The overexpression of mPer2 in human pancreatic cancer cells (Panel, Aspcl) reduced cellular proliferation and induced apoptotic cell death. Infection with AdmPer2 also inhibited cell-cycle progression, inducing arrest at the G 2-Mphase. Western blotting analyses confirmed that infection with AdmPer2 reduced Bcl-X L, Cdc2 and cyclin Bl protein, whereas it increased Box protein in Aspcl cells. The overexpression of mPer2 suppressed Cdc2 kinase activity. Moreover, infection with AdmPer2 resulted in.
Original language | English |
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Pages (from-to) | 1201-1210 |
Number of pages | 10 |
Journal | Anticancer Research |
Volume | 29 |
Issue number | 4 |
Publication status | Published - 2009 Apr |
Keywords
- Apoptosis
- Cell cycle arrest
- Circadian rhythm
- Cisplatin
- Clock genes
- Mouse period2 gene
- Synergic effect
- Tumor suppression