Figure 4. Analysis of sulindac sulfide-responsive elements in the DR5 promoter.
(a)(b) The luciferase assay was performed as described in Figure 3 with the indicated reporter plasmids. Data represent the means of triplicate experiments (bars, S.D.). +: treated with 200 μM sulindac sulfide for 24 h, −: treated with solvent DMSO. *: p < 0.05.