Figure 8.
Z-VAD-FMK suppresses 15d-PGJ2-, but not MEHP-, induced Bid cleavage (A) and cytochrome c release (B). Following a 30 min pretreatment with Vh or Z-VAD-FMK (30 μM) and treatment with Vh, 15d-PGJ2 (10 μM), or MEHP for 6 hr, cytoplasmic extracts from digitonin-permeabilized cells were prepared and analyzed by immunoblotting for full-length Bid and cytochrome c. Protein expression levels were quantified as described in the Methods. Data are presented as means ± SE from at least 3 independent experiments. *Statistically different than Vh-treated (p<0.05, ANOVA, Tukey-Kramer). **Statistically different than 15d-PGJ2 alone (p<0.05, ANOVA, Tukey-Kramer).