Specific effects of nelarabine on PI3K/AKT and MEK/ERK1/2 pathways. Western blotting analyses for the expression of p-AKT and p-ERK in resistant T-ALL cell lines treated with the specific inhibitors LY294002 (PI3K inhibitor), CCI-779 (mTOR allosteric inhibitor) or trametinib (MEK1/2 inhibitor) alone or in combination with nelarabine. Thirty micrograms of protein was blotted to each lane. Antibody to β-actin served as a loading control. Molecular weights are indicated on the right. CTRL: untreated cells; Nela and N: nelarabine at 10 μM; LY: LY294002 at 10 μM; CCI: CCI-779 at 100 nM; Tram: trametinib at 1 μM. Cells were treated for 48 h
