Research Paper Volume 12, Issue 20 pp 20111—20126

MicroRNA-143 sensitizes acute myeloid leukemia cells to cytarabine via targeting ATG7- and ATG2B-dependent autophagy

Figure 7. Schematic description of the role and mechanism by which miR-143 influences cytarabine activity against AML. MiR-143 functions to inhibit autophagy induction via targeting ATG7 and ATG2B, whereby erasing the inhibitory role of autophagy in cytarabine-induced caspase-dependent apoptosis and cytotoxicity in AML cells, including primary AML cells and human AML cells lines, HL60 and U937. However, the expression of miR-143 in AML cells is downregulated by cytarabine treatment, thus compromising the cytarabine cytotoxicity against AML cells.