Objective:To evaluate the effect of erianin on the viability,migration,and invasion of KB cells and elucidate its underlying mechanisms.Methods:Cell Counting Kit-8,colony formation,wound healing,and Transwell assays w...Objective:To evaluate the effect of erianin on the viability,migration,and invasion of KB cells and elucidate its underlying mechanisms.Methods:Cell Counting Kit-8,colony formation,wound healing,and Transwell assays were used to determine the proliferation,migration,and invasion of oral cancer KB cells.Furthermore,malondialdehyde(MDA)and glutathione(GSH)levels were determined.Fluorescent probes were used to detect changes in intracellular reactive oxygen species and iron ions.Additionally,the expressions of ferroptosis-related proteins,NF-E2-related factor 2(Nrf2),ferritin heavy chain 1(FTH1),heme oxygenase 1(HO-1),and glutathione peroxidase 4(GPX4)were analyzed by Western blotting assays.Results:Erianin induced ferroptosis and inhibited the proliferation,migration,and invasion of KB cells.Moreover,erianin decreased GSH level,increased MDA level,elevated intracellular ROS and Fe2+contents,and downregulated the expression of the ferroptosis-related proteins Nrf2,HO-1,GPX4,and FTH1 in KB cells.These effects of erianin were effectively reversed by a ferroptosis inhibitor,ferrostatin-1.Conclusions:Erianin inhibits the proliferation,migration,and invasion of oral cancer cells and induces ferroptosis via the Nrf2/HO-1/GPX4 signaling pathway.Therefore,erianin may be a potential candidate for the treatment of oral cancer.展开更多
目的:基于核因子E2相关因子2(Nrf2)/血红素氧合酶-1(HO-1)/谷胱甘肽过氧化物酶4(GPX4)信号通路探讨真武汤对脾肾阳虚型糖尿病肾病(DKD)小鼠肾脏氧化损伤的干预作用及机制。方法:将25只7周龄SPF级雄性db/m小鼠及95只7周龄SPF级雄性db/db...目的:基于核因子E2相关因子2(Nrf2)/血红素氧合酶-1(HO-1)/谷胱甘肽过氧化物酶4(GPX4)信号通路探讨真武汤对脾肾阳虚型糖尿病肾病(DKD)小鼠肾脏氧化损伤的干预作用及机制。方法:将25只7周龄SPF级雄性db/m小鼠及95只7周龄SPF级雄性db/db小鼠适应性喂养1周。db/m小鼠作为空白组,其余小鼠进行运用灌服生大黄溶液和氢化可的松制备脾肾阳虚型DKD模型,成模后随机分为模型组、厄贝沙坦组(25 mg·kg^(-1))、真武汤高、中、低剂量(33.8、16.9、8.45 g·kg^(-1))组,每组15只,连续灌胃8周。观察小鼠生存状态和计算中医证候评分并测定脾肾阳虚相关、空腹血糖(FBG)及肾功能相关指标;苏木素-伊红(HE)染色观察各组肾脏组织病理学改变;生化试剂盒法测定肾组织中氧化应激相关指标;实时荧光定量聚合酶链式反应(Real-time PCR)和蛋白免疫印迹法(Western blot)检测各组小鼠肾组织中Nrf2、HO-1、谷氨酸半胱氨酸连接酶催化亚基(GCLC)、GPX4 m RNA和蛋白表达水平。结果:与空白组比较,模型组小鼠中医证候积分明显升高(P<0.05),雌二醇(E2)含量明显升高(P<0.05),睾酮(T)、三碘甲状腺原氨酸(T3)、四碘甲状腺原氨酸(T4)含量明显降低(P<0.05);FBG明显升高(P<0.05),肾功能明显下降(P<0.05);肾脏病理显示肾小球肥大,肾小球系膜和基底增厚明显,肾组织中过氧化氢酶(CAT)、总抗氧化能力(T-AOC)、还原型谷胱甘肽(GSH)水平均明显降低(P<0.05),丙二醛(MDA)的含量明显升高(P<0.05),肾组织中Nrf2、HO-1、GCLC、GPX4 m RNA及蛋白表达水平明显下降(P<0.05);与模型组比较,真武汤高、中剂量组中医证候积分明显降低、E2含量明显降低(P<0.05),T、T3、T4含量明显升高(P<0.05);肾功能明显改善(P<0.05),肾脏病理明显改善,真武汤高、中剂量组小鼠肾组织中CAT、T-AOC、GSH水平均明显升高(P<0.05),MDA的含量明显下降(P<0.05),各给药组小鼠肾组织中Nrf2、HO-1、GCLC、GPX4 m RNA及蛋白表达水平明显升高(P<0.05)。结论:真武汤改善脾肾阳虚型db/db小鼠一般状态、肾功能,降低氧化损伤和减轻肾脏病理改变,其作用机制可能与调节Nrf2/HO-1/GPX4通路有关。展开更多
文摘Objective:To evaluate the effect of erianin on the viability,migration,and invasion of KB cells and elucidate its underlying mechanisms.Methods:Cell Counting Kit-8,colony formation,wound healing,and Transwell assays were used to determine the proliferation,migration,and invasion of oral cancer KB cells.Furthermore,malondialdehyde(MDA)and glutathione(GSH)levels were determined.Fluorescent probes were used to detect changes in intracellular reactive oxygen species and iron ions.Additionally,the expressions of ferroptosis-related proteins,NF-E2-related factor 2(Nrf2),ferritin heavy chain 1(FTH1),heme oxygenase 1(HO-1),and glutathione peroxidase 4(GPX4)were analyzed by Western blotting assays.Results:Erianin induced ferroptosis and inhibited the proliferation,migration,and invasion of KB cells.Moreover,erianin decreased GSH level,increased MDA level,elevated intracellular ROS and Fe2+contents,and downregulated the expression of the ferroptosis-related proteins Nrf2,HO-1,GPX4,and FTH1 in KB cells.These effects of erianin were effectively reversed by a ferroptosis inhibitor,ferrostatin-1.Conclusions:Erianin inhibits the proliferation,migration,and invasion of oral cancer cells and induces ferroptosis via the Nrf2/HO-1/GPX4 signaling pathway.Therefore,erianin may be a potential candidate for the treatment of oral cancer.
文摘目的:基于核因子E2相关因子2(Nrf2)/血红素氧合酶-1(HO-1)/谷胱甘肽过氧化物酶4(GPX4)信号通路探讨真武汤对脾肾阳虚型糖尿病肾病(DKD)小鼠肾脏氧化损伤的干预作用及机制。方法:将25只7周龄SPF级雄性db/m小鼠及95只7周龄SPF级雄性db/db小鼠适应性喂养1周。db/m小鼠作为空白组,其余小鼠进行运用灌服生大黄溶液和氢化可的松制备脾肾阳虚型DKD模型,成模后随机分为模型组、厄贝沙坦组(25 mg·kg^(-1))、真武汤高、中、低剂量(33.8、16.9、8.45 g·kg^(-1))组,每组15只,连续灌胃8周。观察小鼠生存状态和计算中医证候评分并测定脾肾阳虚相关、空腹血糖(FBG)及肾功能相关指标;苏木素-伊红(HE)染色观察各组肾脏组织病理学改变;生化试剂盒法测定肾组织中氧化应激相关指标;实时荧光定量聚合酶链式反应(Real-time PCR)和蛋白免疫印迹法(Western blot)检测各组小鼠肾组织中Nrf2、HO-1、谷氨酸半胱氨酸连接酶催化亚基(GCLC)、GPX4 m RNA和蛋白表达水平。结果:与空白组比较,模型组小鼠中医证候积分明显升高(P<0.05),雌二醇(E2)含量明显升高(P<0.05),睾酮(T)、三碘甲状腺原氨酸(T3)、四碘甲状腺原氨酸(T4)含量明显降低(P<0.05);FBG明显升高(P<0.05),肾功能明显下降(P<0.05);肾脏病理显示肾小球肥大,肾小球系膜和基底增厚明显,肾组织中过氧化氢酶(CAT)、总抗氧化能力(T-AOC)、还原型谷胱甘肽(GSH)水平均明显降低(P<0.05),丙二醛(MDA)的含量明显升高(P<0.05),肾组织中Nrf2、HO-1、GCLC、GPX4 m RNA及蛋白表达水平明显下降(P<0.05);与模型组比较,真武汤高、中剂量组中医证候积分明显降低、E2含量明显降低(P<0.05),T、T3、T4含量明显升高(P<0.05);肾功能明显改善(P<0.05),肾脏病理明显改善,真武汤高、中剂量组小鼠肾组织中CAT、T-AOC、GSH水平均明显升高(P<0.05),MDA的含量明显下降(P<0.05),各给药组小鼠肾组织中Nrf2、HO-1、GCLC、GPX4 m RNA及蛋白表达水平明显升高(P<0.05)。结论:真武汤改善脾肾阳虚型db/db小鼠一般状态、肾功能,降低氧化损伤和减轻肾脏病理改变,其作用机制可能与调节Nrf2/HO-1/GPX4通路有关。