Abstract
In the present study, we investigated the role of recombinant human phospholipase D2 (rhPLD2) on proliferation and apoptosis in human leukemia HL-60 cells which induced by camptothecin. Our research demonstrated that various concentrations of rhPLD2 inhibit the growth of HL-60 cells in a dose-dependent manner, and rhPLD2 plus camptothecin can produce a synergistic effect on growth inhibition of HL-60 cells in vitro. So, we conclude that rhPLD2 alone cannot induce apoptosis in HL-60 cells, but it can potentiate the apoptosis of HL-60 cells induced by camptothecin. Similarly, we show that both rhPLD2 and standard PLD were able to enhance camptothecin-induced apoptosis of HL-60 cells.
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