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G6PD 调控 PI3K/Akt 信号通路诱导肝癌细胞索拉非尼耐药的机

          制研究        Δ


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          杨蕙华    1,2* ,陈大红 ,刁文婧 ,吴亚菲 ,李 琴 ,刘皋林 (1.上海交通大学药学院,上海 200240;2.上海交
                                                             1,2 #b
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          通大学医学院附属第一人民医院临床药学科,上海 200080)
          中图分类号 R965;R735.7         文献标志码 A           文章编号 1001-0408(2022)19-2338-05
          DOI  10.6039/j.issn.1001-0408.2022.19.07

          摘   要  目的 基于磷脂酰肌醇3激酶/蛋白激酶B(PI3K/Akt)信号通路研究葡萄糖-6-磷酸脱氢酶(G6PD)诱导肝癌细胞索拉非尼
          耐药的机制。方法 以肝癌细胞Huh7、索拉非尼耐药肝癌细胞Huh7-SR、G6PD稳定过表达的肝癌细胞Huh7-G6PD及其对照细胞
          Huh7-CT为研究对象,以索拉非尼或G6PD抑制剂(6-氨基烟酰胺)为干预药物,采用CCK-8法检测细胞活力,采用Western blot法
          检测G6PD蛋白表达水平及PI3K/Akt信号通路相关蛋白的磷酸化水平,采用流式细胞术检测细胞凋亡水平。结果 与Huh7细胞比
          较,Huh7-SR细胞中G6PD的表达水平显著升高(P<0.05)。经6-氨基烟酰胺和索拉非尼联合干预后,Huh7-SR细胞存活率显著降
          低(P<0.01)。经索拉非尼干预后,与 Huh7-CT 细胞比较,Huh7-G6PD 细胞存活率显著升高(P<0.01),凋亡率显著降低(P<
          0.01)。经6-氨基烟酰胺干预后,Huh7-SR细胞中PI3K、Akt蛋白的磷酸化水平均显著降低(P<0.05)。不加药物干预时,与Huh7-
          CT细胞比较,Huh7-G6PD细胞中PI3K、Akt蛋白的磷酸化水平均显著升高(P<0.01)。结论 G6PD可通过激活PI3K/Akt信号通路
          诱导肝癌细胞索拉非尼耐药。
          关键词    葡萄糖-6-磷酸脱氢酶;索拉非尼;耐药;磷脂酰肌醇3激酶/蛋白激酶B信号通路;肝癌细胞

          Study on the mechanism of G6PD-induced sorafenib-resistance in hepatocarcinoma cell by activating PI3K/
          Akt signaling pathway
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          YANG Huihua ,CHEN Dahong ,DIAO Wenjing ,WU Yafei ,LI Qin ,LIU Gaolin (1. School of Pharmacy,
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          Shanghai Jiao Tong University,Shanghai 200240,China;2. Dept. of Clinical Pharmacy,Shanghai General
          Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai 200080,China)
          ABSTRACT OBJECTIVE To investigate the mechanism of glucose-6-phosphate dehydrogenase(G6PD)-induced sorafenib-
          resistance in hepatocarcinoma cell based on phoshorylated 3-kinase/protein kinase B(PI3K/Akt)signaling pathway. METHODS Cell
          lines including hepatocarcinoma cell Huh7,sorafenib-resistant cell Huh7-SR,G6PD overexpressed cell Huh7-G6PD and its control
          cell Huh7-CT,and compounds including G6PD inhibitor (6-Aminonicotinamide,6AN) and sorafenib were used as objects or
          intervention drugs in these research. CCK8 assay was applied to evaluate cell viability. The protein levels of G6PD and the
          phosphorylation levels of PI3K/Akt signaling pathway were detected by Western blot. Flow cytometry was utilized to investigate cell
          apoptosis. RESULTS Compared with Huh7 cells,the protein level of G6PD was significantly increased in Huh7-SR cells(P<
          0.05). The combination of 6AN and sorafenib reduced cell viability of Huh7-SR cells(P<0.01). However,compared with Huh7-
          CT,increased cell viability and decreased cell apoptosis rate were observed in Huh7-G6PD cells while cells were treated with
          sorafenib(P<0.01). Mechanistically,the phosphorylation levels of PI3K and Akt were significantly decreased in Huh7-SR cells
          that were treated with 6AN(P<0.05). Moreover,under the condition of no drug intervention,the phosphorylation levels of PI3K
          and Akt were significantly elevated in Huh7-G6PD cells when compared with Huh7-CT(P<0.01). CONCLUSION G6PD could
          induce sorafenib-resistance in hepatocarcinoma cell by activating PI3K/Akt signaling pathway.
          KEYWORDS     glucose-6-phosphate dehydrogenase;sorafenib; resistance; phoshorylated 3-kinase/protein kinase B signaling
          pathway;hepatocarcinoma cell


              Δ 基金项目 国家自然科学基金资助项目(No.81572449);上海申                肝细胞癌(hepatocellular carcinoma,HCC)是全球发
          康 医 院 发 展 中 心 临 床 三 年 行 动 计 划 重 大 临 床 研 究 项 目(No.   病率增长最迅速的癌症之一,其主要危险因素包括肥
          SHDC2020CR4076)                                     胖、吸烟、乙型肝炎病毒及酒精性肝炎,患者的5年生存
             *第一作者 硕士研究生。研究方向:肿瘤药理学。E-mail:                           [1]
                                                              率仅20% 。索拉非尼是一种多激酶抑制剂,可抑制Raf
          huihuayang@163.com
                                                              激酶、血管内皮细胞生长因子受体、血小板衍生生长因
              #a通信作者 副教授,硕士生导师,博士。研究方向:肿瘤药理学。
          电话:021-37798731。E-mail:liqin0626@hotmail.com        子受体、Fms样酪氨酸激酶3、原癌基因c-Kit及孤儿受体
                                                              酪氨酸激酶等的活性,具有抑制肿瘤生长和阻断肿瘤新
              #b 通信作者 教授,博士生导师,博士。研究方向:肿瘤药理学与
                                                                                        [2]
          临床药学。电话:021-37798312。 E-mail:gaolinliu@aliyun.com   生血管形成的双重抗肿瘤效应 。2007年索拉非尼被批

          ·2338·   China Pharmacy 2022 Vol. 33 No. 19                                 中国药房    2022年第33卷第19期
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