Fig. 4.
The Nrf2 activators, CDDO-Im and tBHQ have differential effects on TNFα secretion. Freshly isolated splenocytes from Nrf2-null and wild-type mice were either left untreated (BKG) or were pretreated with vehicle (VEH, 0.01% ethanol for tBHQ or 0.01% DMSO for CDDO-Im), tBHQ, or CDDO-Im for 30 min prior to activation with anti-CD3/anti-CD28. After 24 h, the cell supernatants from A.) tBHQ-treated splenocytes or B.) CDDO-Im treated splenocytes were collected and TNFα was quantified by sandwich ELISA. a = p<0.05 versus wild-type VEH, b = p<0.05 versus Nrf2-null VEH, c = p<0.05 between the wild-type and Nrf2-null genotypes.