OBJECTIVE:To investigate the effect of edelfosine on the proliferation of Hela cells and its mechanism.METHODS:Hela cells were treated with edelfosine at doses of 0(control),0.5,1.0,5.0,10.0 ?mol?L-1 for 96 h.MTT assay,flow cytometry,and staining were performed to determine the cell proliferation activity,cell cycle,and apoptotic rate.RESULTS:As compared with control,the cell proliferation activity of Hela cells was inhibited in a dose-and time-dependent manner after being treated by edelfosine for 24~96 h.After being treated by edelfosine(1.0,5.0,10.0 ?mol?L-1) for 72 h,the number of Hela cells significantly increased in G0/G1 phase but decreased in S phase(P