Figure 4

IL-6 and PAI-1 expressions are inhibited by EGFR knockdown. (a) Western-blot analysis of total lysates from IGROV1 cells treated with control or EGFR-specific siRNA. The antibodies used are indicated. β-actin is shown as a control for protein loading. A representative experiment is shown. (b) Luciferase promoter gene assay of EGFR-silenced IGROV1 cells transiently transfected with reporter plasmids containing NFkB binding sites. Data are mean values (±s.d.) normalized for transfection efficiency in three independent experiments performed in triplicate. (c) Real-time RT–PCR analysis for EGFR, PAI-1, IL-6 and IL-8 on total RNA from EGFR-silenced IGROV1. Results are represented as relative mRNA expression normalized for GAPDH mRNA levels. (b, c): Asterisks indicate a significant difference by t-test.