Effects of high glucose state on oxidative stress in prostate cancer cells
ZHANG Zhitao1 ZHANG Hongyan2 NIU Fangfang1
1.The Second Department of Uropoiesis Surgical, Handan Central Hospital, Hebei Province, Handan 056001, China;
2.Department of Inspection, Medical College of Hebei Engineering University , Hebei Province, Handan 056001, China
Abstract:Objective To explore the effects of high glucose state on oxidative stress in prostate cancer cells. Methods Human prostate cancer cell line LNCap was treated with different glucose concentrations, and the level of LNCap cells reactive oxygen species (ROS) was detected by DCFH-DA fluorescent probe. The hydrogen peroxide (H2O2), total superoxide dismutase (T-SOD), catalase (CAT) and glutathione peroxidase (GPX) kits were used to detect H2O2 level and antioxidant enzymes activities in LNCap cells. Western blot was used to detect the expression levels of SOD1 and SOD2 protein in LNCap cells. The level of H2O2 was detected after LNCap cells transfected with si-SOD2. Results The levels of ROS and H2O2 in LNCap cells were increased with the increase of glucose concentration, and were concentration-dependent (P < 0.05). The activities of T-SOD and CAT in LNCap cells were increased significantly in the high glucose environment (P < 0.05), but there was no significant change in the activity of GPX (P > 0.05). In the high glucose environment, the expression level of SOD2 in LNCap cells was increased significantly (P < 0.05), but the expression level of SOD1 was not significantly changed (P > 0.05). After the SOD2 gene was silenced, the level of H2O2 in the LNCap cells was decreased significantly in the high glucose environment (P < 0.05). Conclusion High glucose state can promote the oxidative stress level of prostate cancer cells, and the increase of H2O2 level may be regulated by the expression of SOD2.
张志涛1 张红艳2 牛芳芳1. 高糖状态对前列腺癌细胞氧化应激状态的影响[J]. 中国医药导报, 2018, 15(14): 17-20.
ZHANG Zhitao1 ZHANG Hongyan2 NIU Fangfang1. Effects of high glucose state on oxidative stress in prostate cancer cells. 中国医药导报, 2018, 15(14): 17-20.
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