Hernandezine induces autophagic cell death in human pancreatic cancer cells via activation of the ROS/AMPK signaling pathway

查看全文 作　　者：Chang-feng [1,2,3,4]Song;Yu-heng [1,2,3,4]Hu;Zhi-guo [5]Mang;Zeng [1,2,3,4]Ye;Hai-di [1,2,3,4]Chen;De-sheng [1,2,3,4]Jing;Gui-xiong [1,2,3,4]Fan;Shun-rong [1,2,3,4]Ji;Xian-jun [1,2,3,4]Yu;Xiao-wu [1,2,3,4]Xu;Yi [1,2,3,4]Qin

机构地区：[1]Department of Pancreatic Surgery,Fudan University Shanghai Cancer Center,Shanghai 200032,China;[2]Department of Oncology,Shanghai Medical College,Fudan University,Shanghai 200032,China;[3]Shanghai Pancreatic Cancer Institute,Shanghai 200032,China;[4]Pancreatic Cancer Institute,Fudan University,Shanghai 200032,China;[5]Yujie Biotechnology(Shanghai)Co.,Ltd.,Shanghai 201314,China

出　　处：《Acta Pharmacologica Sinica》索引2023年第44卷第4期,共12页

基　　金：supported by the National Natural Science Foundation of China(No.81871950,81972725 and U21A20374);Shanghai Municipal Science and Technology Major Project(21JC1401500);Scientific Innovation Project of Shanghai Education Committee(2019-01-07-00-07-E00057);Clinical Research Plan of Shanghai Hospital Development Center(SHDC2020CR1006A);Xuhui District Artificial Intelligence Medical Hospital Cooperation Project(2021-011). 摘　　要：Hernandezine(Her)is a bisbenzylisoquinoline alkaloid extracted from the traditional Chinese herbal medicine Thalictrum glandulosissimum.Evidence shows that Her is a natural agonist of adenosine monophosphate(AMP)-activated protein kinase(AMPK)and induces apoptosis and autophagy in tumor cells.In this study,we investigated the role of autophagy in Her-induced cell death in human pancreatic cancer cell lines.We showed that Her dose-dependently suppressed cell proliferation,promoted autophagy and induced autophagic death in pancreatic ductal adenocarcinoma(PDAC)cell lines Capan-1 and SW1990.The IC_(50) values of Her in inhibition of Capan-1 and SW1990 cells were 47.7μM and 40.1μM,respectively.Immunoblotting showed that Her(1−40μM)promoted the conversion of LC3-I to LC3-II,and Her exerted concentration-dependent and time-dependent effects on autophagy activation in PDAC cells.In transmission electron microscopy and fluorescence image analysis,we found that autophagic vacuoles were significantly increased in Her-treated cells.Knockdown of ATG5,a key gene in the autophagy pathway,alleviated the activation of autophagy by Her.These results demonstrated that Her induced autophagy in PDAC cells.Intensely activated autophagy could promote cell death.The autophagy inhibitors,BafA1 and HCQ significantly inhibited Her-induced cell death,implying that Her induced autophagic cell death in PDAC cells.Moreover,we showed that Her activated autophagy by increasing the phosphorylation of AMPK and decreasing the phosphorylation of mTOR/p70S6K.Knockdown of AMPKαrelieves the autophagic cell death induced by Her.Furthermore,Her concentration-dependently enhanced reactive oxygen species(ROS)generation in PDAC cells.Antioxidants could reduce the phosphorylation of AMPK and suppress autophagic cell death induced by Her.Our study provides evidence for the development of Her as a therapeutic agent for the treatment of pancreatic cancer. 关键词：pancreatic cancer hernandezine ROS AUTOPHAGY autophagic cell death

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Hernandezine induces autophagic cell death in human pancreatic cancer cells via activation of the ROS/AMPK signaling pathway

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