FIGURE 7.
Overexpression of Nrf2 does not alter XBP1 expression in ARPE-19 cells. (A) ARPE-19 cells were transfected with adenovirus overexpressing Nrf2 or LacZ as control for 24 h, mRNA level of HO-1, spliced XBP1 and total XBP1 was determined by real-time RT PCR (mean ± SD, n = 3, ∗∗p < 0.01 vs. ad-LacZ transfected cells). (B) ARPE-19 cells were transfected with adenovirus overexpressing Nrf2 or LacZ for 48 h, Nrf2, unspliced XBP1 (XBP1u) and spliced XBP1 (XBP1s) level was detected by Western blot analysis (representative of 3 independent experiments). (C) XBP1u expression was semi-quantified by densitometry (mean ± SD, n = 3).