Figure 4. Curcumin inhibits growth of HL cells.
A) HL cells from the indicated cell lines and peripheral blood mononuclear cells (PBMC) were incubated for 24 hours with 25 μM curcumin (Sigma, Taufkirchen, Germany). Cell viability was assessed by 2,3-bis-(2-methoxy-4- nitro- 5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) assay (Roche, Mannheim, Germany). Shown are means and standard errors from 4 replicates. B) Cells of the HL cell line L-428 were incubated with 1.25 μM curcumin or with carrier. The cells were treated with 6.25 and 12.5 μg/mL cisplatin (Sigma) or with the same concentrations of carrier (dimethylformamide). After 24 hours the cell viability was assessed using XTT assay (Roche). Shown are means and standard errors from triplicates.