Table 1.

Effects of Bay 11-7082 ± UCN-01 on the cell-cycle traverse of U266 cells




Control

Bay 11-7082

UCN-01

Bay + UCN
G0/G1  46.78 ± 0.78   62.39 ± 1.06*  57.30 ± 1.18*  60.17 ± 0.78* 
S   42.55 ± 1.45   26.04 ± 1.53*  35.61 ± 1.68†   30.64 ± 1.98* 
G2/M
 
10.67 ± 0.87
 
11.6 ± 0.51
 
7.12 ± 0.56†
 
9.19 ± 1.45
 



Control

Bay 11-7082

UCN-01

Bay + UCN
G0/G1  46.78 ± 0.78   62.39 ± 1.06*  57.30 ± 1.18*  60.17 ± 0.78* 
S   42.55 ± 1.45   26.04 ± 1.53*  35.61 ± 1.68†   30.64 ± 1.98* 
G2/M
 
10.67 ± 0.87
 
11.6 ± 0.51
 
7.12 ± 0.56†
 
9.19 ± 1.45
 

U226 cells were exposed to 4 μM Bay 11-7082 ± 200 nM UCN-01 for 24 hours, after which PI staining and flow cytometric analysis were performed to monitor effects on each phase of the cell cycle, as described in “Materials and methods.” Values are expressed as the percentage of cells in the indicated phase of the cell cycle relative to the total nonapoptotic cell population and represent the means ± SDs for 3 separate experiments performed in triplicate.

*P < .001 and †P < .01 significantly higher (G0/G1) or lower (S and G2/M) than values for untreated control cells.

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