Figure 4.
Inhibition of Bcl-2 and Bcl-XL fails to revert BMSC-driven drug resistance. OCI-AML2 (A), OCI-AML3 (B), ML-1 (C) and Molm-13 (D) cells were cultured on a HS-5 BMSC layer for 24 h before exposing the cells to a combination of AraC and ABT-737 at the doses indicated (ABT3 = 3 nM, ABT10 = 10 nM, ABT30 = 30 nM and ABT300 = 300 nM) for an additional 24 h. The graphs show the average percentage of live cells ± stdev quantified with Annexin V staining from three independent experiments.