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表没食子儿茶素没食子酸酯提高肝癌细胞对仑伐替尼敏感性的
机制 Δ
宋传芳 ,艾 江,温 超,张 杰,崔江河(牡丹江医科大学附属红旗医院消化内科,黑龙江 牡丹江 157011)
#
*
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2025)18-2256-06
DOI 10.6039/j.issn.1001-0408.2025.18.07
摘 要 目的 基于磷脂酰肌醇3激酶(PI3K)/蛋白激酶B(Akt)信号通路探讨表没食子儿茶素没食子酸酯(EGCG)提高肝癌细胞
对仑伐替尼敏感性的潜在机制。方法 以HepG2、Huh-7、SMMC-7721、SNU-368、SNU-739 5种人肝癌细胞为对象,探讨仑伐替尼、
EGCG+仑伐替尼对细胞存活率、克隆形成数、增殖率、侵袭数和通路相关mRNA及蛋白表达的影响;引入PI3K激动剂[胰岛素样
生长因子1(IGF-1)],考察激活PI3K/Akt信号通路对EGCG增敏作用的影响。结果 与对照组比较,仑伐替尼组(10 μmol/L)、不同
质量浓度EGCG+仑伐替尼组(1、5、10 μg/mL EGCG+10 μmol/L仑伐替尼)5种肝癌细胞的存活率和克隆形成数均呈浓度依赖性降
低(P<0.05);仑伐替尼组(10 μmol/L)、EGCG+仑伐替尼组(10 μg/mL EGCG+10 μmol/L仑伐替尼)5种肝癌细胞的增殖率和侵袭
数,HepG2细胞或5种细胞中PI3K、Akt、哺乳动物雷帕霉素靶蛋白(mTOR)、P70S6K、4EBP mRNA的表达以及PI3K、Akt蛋白的磷
酸化水平和 mTOR、B 细胞淋巴瘤 2(Bcl-2)蛋白的表达均显著降低或下调,而第 10 号染色体缺失的磷酸酶及张力蛋白同源物
(PTEN)mRNA及蛋白、胱天蛋白酶3(caspase-3)、剪切的胱天蛋白酶3(cleaved caspase-3)的表达均显著上调(P<0.05);且EGCG+
仑伐替尼组上述指标的变化较仑伐替尼组更为显著(P<0.05)。与仑伐替尼组、EGCG+仑伐替尼组比较,EGCG+仑伐替尼+IGF-1
组(10 μg/mL EGCG+10 μmol/L 仑伐替尼+50 ng/mL IGF-1)HepG2 细胞的克隆形成数、增殖率及侵袭数均显著升高(P<0.05)。
结论 EGCG可增加肝癌细胞对仑伐替尼的敏感性,其作用机制可能与抑制PI3K/Akt信号通路激活有关。
关键词 表没食子儿茶素没食子酸酯;肝癌;仑伐替尼;增敏作用;PI3K/Akt信号通路
The mechanism of epigallocatechin gallate enhancing the sensitivity of hepatocellular carcinoma cells to
lenvatinib
SONG Chuanfang,AI Jiang,WEN Chao,ZHANG Jie,CUI Jianghe(Dept. of Gastroenterology, Hongqi Hospital
Affiliated to Mudanjiang Medical University, Heilongjiang Mudanjiang 157011, China)
ABSTRACT OBJECTIVE To investigate the potential mechanism of epigallocatechin gallate (EGCG) enhancing the sensitivity
of hepatocellular carcinoma (HCC) cells to lenvatinib based on the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt)
signaling pathway. METHODS Five human HCC cell lines (HepG2, Huh-7, SMMC-7721, SNU-368 and SNU-739) were used to
evaluate the effects of lenvatinib alone and in combination with EGCG on survival rates, clone number, proliferation rate, invasion
number and the expressions of mRNAs and proteins related to the PI3K/Akt signaling pathway. The PI3K activator insulin-like
growth factor-1 (IGF-1) was introduced to investigate the effect of activating the PI3K/Akt signaling pathway on the sensitization
effect of EGCG. RESULTS Compared with the control group, lenvatinib (10 μmol/L) and different concentrations of EGCG+
lenvatinib (1, 5 and 10 μg/mL EGCG+10 μmol/L lenvatinib) significantly reduced the survival rates and clone numbers of all five
HCC cell lines in a dose-dependent manner (P<0.05). Lenvatinib (10 μmol/L) and EGCG+lenvatinib (10 μg/mL EGCG+10 μmol/L
lenvatinib) also markedly inhibited the proliferation rate and invasion numbers of these cells, and decreased the mRNA expressions
of PI3K, Akt, mammalian target of rapamycin (mTOR), P70S6K and 4EBP, and the phosphorylation levels of PI3K and Akt, as
well as the protein expressions of mTOR and B cell lymphoma-2 (Bcl-2) in HepG2 cells or all five HCC cells; conversely, the
mRNA and protein expressions of phosphatase and tensin homologue deleted on chromosome 10(PTEN), and the protein
expressions of caspase-3 and cleaved caspase-3 were significantly upregulated, with more pronounced effects observed in the
EGCG+lenvatinib group than in the lenvatinib group (P<0.05). Compared with the lenvatinib group and the EGCG+lenvatinib
group, the clone number, proliferation rate and invasion number of HepG2 cells in the EGCG+lenvatinib+IGF-1 group (10 μg/mL
EGCG+10 μmol/L lenvatinib+50 ng/mL IGF-1) were significantly increased (P<0.05). CONCLUSIONS EGCG can enhance the
sensitivity of HCC cells to lenvatinib, and its underlying mechanism may be related to the inhibition of the activation of PI3K/Akt
signaling pathway activation.
Δ 基金项目 黑龙江省自然科学基金项目(No.2023JJ0008) KEYWORDS epigallocatechin gallate; hepatocellular car-
*第一作者 主治医师,硕士。研究方向:消化系统肿瘤。E-mail:
cinoma; lenvatinib; sensitization effect; PI3K/Akt signaling
songchuanfang1988@163.com
pathway
# 通信作者 副主任医师。研究方向:消化系统肿瘤。E-mail:
18215039@qq.com
· 2256 · China Pharmacy 2025 Vol. 36 No. 18 中国药房 2025年第36卷第18期

