TNF and acute promyelocytic leukemia: 12-O-tetradecanoylphorbol-13-acetate (TPA)-stimulated superoxidegeneration and tumor necrosis factor-α (TNF-α) or interleukin-1αproduction in human promyelocytic leukemia (HL-60) cells as well as on DNA binding ofactivator protein 1 (AP-1) in mouse fibroblast (NIH3T3) cells are also suppressed byyakuchinone A [23,24].