GAO Ling, LI Fengsheng, CHEN Xiaohua, et al. Effects of ionizing radiation on the STAT3 expression of gastric adenocarcinoma cells[J]. Journal of Radiation Research and Radiation Processing, 2011,29(2):113-116.
GAO Ling, LI Fengsheng, CHEN Xiaohua, et al. Effects of ionizing radiation on the STAT3 expression of gastric adenocarcinoma cells[J]. Journal of Radiation Research and Radiation Processing, 2011,29(2):113-116.DOI:
This study is to investigate the effect of ionizing radiation on the activity and localization of STAT3 in gastric adenocarcinoma cells. After irradiated with ,60,Co γ-rays, the content and activity of STAT3 in gastric adenocarcinoma BGC-823 cells were detected by Western blot. The content of STAT3 in nucleus of BGC-823 was further detected by Western blot after the total protein in nucleus of irradiated BGC-823 was extracted. Finally, the distribution of p-STAT3,(Y705), in BGC-823 treated with or without irradiation was examined by immunofluorescence staining. The results showed that the level of p-STAT3,(Y705), in BGC-823 cells decreased significantly after ,60,Co γ-rays irradiation, and the content of STAT3 in BGC-823 cells nuclei also decreased after irradiation. As predicted, the p-STAT3 ,(Y705), localized in nucleus of BGC-823 cells also decreased significantly. ,60,Co γ-rays irradiation inhibited the phosphorylation of p-STAT3 ,(Y705), and further suppress the nucleus localization of STAT3, which might be involved in radiation-induced cell proliferation inhibition and apoptosis of gastric adenocarcinoma cells.