Table 1.

Effects of IL-6 and Dexamethasone on Cell-Cycle Distribution

Time Stimulation 8226UCLA #1
G0/G1S/G2 + M G0/G1S/G2 + M
48 h  Control  54  46  65 35  
 IL-6  62  38  60  40  
 Dex 76-150 24-150 85-150 15-150 
 Dex + IL-6  71-150 29-150 81-150 19-150 
72 h  Control  53  47  69 31  
 IL-6  47  53  64  36  
 Dex 79-150 21-150 89-150 11-150 
 Dex + IL-6  76-150 24-150 82-150 18-150 
Time Stimulation 8226UCLA #1
G0/G1S/G2 + M G0/G1S/G2 + M
48 h  Control  54  46  65 35  
 IL-6  62  38  60  40  
 Dex 76-150 24-150 85-150 15-150 
 Dex + IL-6  71-150 29-150 81-150 19-150 
72 h  Control  53  47  69 31  
 IL-6  47  53  64  36  
 Dex 79-150 21-150 89-150 11-150 
 Dex + IL-6  76-150 24-150 82-150 18-150 

Cell-cycle analysis performed by hypotonic PI staining of 8226 or UCLA #1 MM cells 48 or 72 hours after culture in media (control), IL-6 (1,000 U/mL), dexamethasone (Dex; 10−6 mol/L) or Dex + IL-6. Results are percentage of cells in G0/G1versus S/G2 + M, mean of three separate experiments. The standard deviations were all <15% of the mean values.

F0-150

Significantly different from corresponding control (media), P< .05.

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