Adduction of alkynyl-analog 8 to cellular protein.
A, RAW264.7 cells were treated with curcumin (75 μm) or alkynyl-analog 8 (1–75 μm). B, RAW264.7 cells were treated with alkynyl-analogs 8 (oxidizable) or 7 (non-oxidizable) at 10 and 75 μm, respectively. C, pretreatment of cells with curcumin, non-oxidizable 4, or oxidizable 11 (150 μm) followed by treatment with 8 (75 μm) or vehicle. Rhodamine-azide clicked protein samples (25 μg) were resolved by SDS-PAGE (4–20%) and analyzed by fluorescence or Coomassie stain.