Objective To investigate the in vitro inhibitory and radiosensitizing effects of adenovirus-mediated interleukin-24(Ad-IL-24)gene on human lung adenocarcinoma cell SPC-A1.Methods SPC-A1 cells were divided into PBS group,Ad-GFP group,Ad-IL-24 group,radiotherapy group,Ad-GFP combined with radiotherapy group and AdIL-24 combined with radiotherapy group.Then,the expression of IL-24 in SPC-A1 cells were determined by reverse transcription-PCR(RT-PCR)and Western blot.The cell growth in each group was assessed by ...