小檗碱通过调控IGF-1R信号通路抑制食管癌细胞增殖和诱导细胞凋亡的实验
DOI: 10.3971/j.issn.1000-8578.2018.17.1500
Keywords: 小檗碱,食管癌细胞,胰岛素样生长因子1受体,细胞凋亡,Antitumor and Apoptosis Induction Effects of Gold Nanorods-mediated Near-infrared Photothermal Therapy on Gastric Cancer SGC-7901 Cells in vitro,Effects of MicroRNA-4465 on Apoptosis and Invasion of Colon Cancer Cells,Effects of Pachymaran on Proliferation, Migration and Pro-apoptosis of Human Cervical Carcinoma HeLa Cells and Its Mechanism,Effects of Long Non-coding RNA-MALAT1 on Proliferation and Apoptosis of Prostate Cancer Cells,Effect of STAT1 on Cell Cycle of Human Glioma U251 Cells and Related Mechanism,Effect of SCD1 Inhibitor on Proliferation and Apoptosis of Breast Cancer Cells and Related Mechanism,MCM7 Knockdown Inhibits Migration and Invasion While Induces Apoptosis of Cutaneous Malignant Melanoma Cells Through AKT Signaling Pathway,Expression and Clinical Significance of ZMYND11 in Glioblastoma Multiforme,Combination of SAHA and Paclitaxel Induce Apoptosis of Human Cervical Cancer HeLa Cells,Apoptosis Induction of Lycorine on Lung Cancer NCI-H460 Cells and Related Mechanism,Apoptotic Effect of Quinalizarin on Human Hepatoma Huh7 Cells and Its Antitumor Mechanism,Effects of RNAi Silencing GTPBP4 Gene on Proliferation and Apoptosis of Colon Cancer RKO Cells,Effects of FEN1 Overexpression on Biological Behaviors of Hepatocellular Carcinoma Cells and Prognosis of Patients,Effect of GANT61 on Apoptosis of Esophageal Squamous Carcinoma Cells and Its Mechanism,Cryptotanshinone Promotes Apoptosis of A549 Cells via Inhibiting Cap-dependent mRNA Translation
Abstract:
摘要 目的 检测小檗碱对食管癌细胞增殖、周期和凋亡的影响,并探讨其作用机制。 方法 MTT法检测细胞的增殖抑制作用;碘化丙啶(Propidium iodide, PI)染色法检测细胞周期进程;Annexin V-FITC和PI双染法结合流式细胞技术检测小檗碱的凋亡诱导作用;Western blot技术检测小檗碱对胰岛素样生长因子1受体(IGF-1R)的活化及下游主要信号分子AKT和p44/42MAPK(ERK)磷酸化水平的影响。结果 小檗碱在体外可浓度依赖性地抑制四种食管癌细胞系的增殖,且其IC50值与细胞表面IGF-1R的表达水平呈负相关。小檗碱可使细胞阻滞在G2/M期。细胞凋亡实验结果显示,小檗碱可浓度依赖性地诱导食管癌细胞发生凋亡,并且在相同浓度下KYSE450细胞(IGF-1R高表达)的凋亡率显著高于KYSE150细胞(IGF-1R低表达)。Western blot结果显示,小檗碱处理可显著抑制IGF-1R的磷酸化,并抑制AKT和ERK的活化,且抑制作用随着小檗碱浓度的增加而增强。结论 小檗碱可通过对IGF-1R及其介导的下游信号通路的调控来发挥抑制食管癌细胞增殖、阻断细胞周期进程以及诱导食管癌细胞凋亡的作用
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