(A) ARE/mVP24 HEK293T cells were plated in a 384-well plate and treated with increasing concentrations of the indicated compounds in triplicate. Twenty-four hours post-treatment firefly luciferase activity was assessed (left axis, red circles). In parallel, HEK293T cells were plated in a 384-well plate and treated in triplicate with increasing concentrations of compounds. Twenty-four hours post-treatment, ATP content was assessed to determine viability (right axis, black squares). Error bars represent the standard deviation. Structures of compounds are indicated. (B) Immunoprecipitation of Flag-tagged mVP24 in cells also expressing HA-tagged Keap1, 24 hours post-treatment with 5 μM of the indicated compounds. Western blots were performed for Flag and HA. (C) Expression of Flag-tagged mVP24 (red circles) and endogenous Nrf2 (teal squares) expression determined relative to DMSO control for ARE/mVP24 HEK293T cells treated with the indicated compounds at 5 and 1 μM for 24h. The dotted line represents the DMSO control, error bars represent the standard deviation and individual values for each of the triplicate are indicated. (D) ARE/mVP24 HEK293T cells were plated and analyzed as in (A) with the indicated compounds.