APO866-mediated cell death involves autophagy. ML-2, Namalwa, Jurkat, or primary AML cells pretreated with either inhibitors of autophagy (wortmannin [WMN], LY294002, 3-methyladenine [3-MA], or bafilomycin A1 [BAFA]) or inhibitor of translation cycloheximide (CHX) were exposed to 10 nM APO866 for either 72 hours (A-D) or 96 hours (E-H). APO866-induced cell death was assessed as described in Figure 1. Percent cell death induced by drug = [(S-C) / (100-C)] × 100; where S = treated sample cell death and C = untreated sample cell death. Data are derived from at least 3 independent experiments.