The sensitivity of A549 cells to chemotherapeutic agents is increased by inhibition of the PI3K-PKB/Akt pathway
A549 cells were seeded and grown in 96-well plates for 24 h before being subjected to serum depletion (in 0.1% FBS) for 16 h.
A) The A549 cells were then pretreated for 8 h with LY294002, or LY294002 plus CT99021, before they were challenged with various doses of acrolein, cisplatin or chlorambucil for 48 h and cytotoxicity measured using the MTT assay.
B) The A549 cells were pretreated with MK-2206, or MK-2206 plus CT99021, for 8 h before being exposed to acrolein, cisplatin or chlorambucil for 48 h and MTT cytotoxicity testing performed.
C) An MTT curve for A549 cells treated for 48 h with different doses of LY294002, MK-2206 or CT99021 in medium containing 0.1% FBS is shown as a control.