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柠檬酚对人肝癌 HepG2 细胞增殖、迁移和骨架相关蛋白表达的
影响及其与蛋白作用方式研究 Δ
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黄周锋 1,2* ,胡筱希 ,陆国寿 ,黄建猷 ,谭 晓(1.广西壮族自治区中医药研究院,南宁 530022;2.广西中药
质量标准研究重点实验室,南宁 530022)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2020)15-1849-06
DOI 10.6039/j.issn.1001-0408.2020.15.10
摘 要 目的:研究柠檬酚对人肝癌HepG2细胞增殖、迁移及骨架相关蛋白表达的影响,并探讨其与骨架相关蛋白的相互作用方
式。方法:采用CCK-8法检测不同浓度柠檬酚(12.5、25、50、100、200 μmol/L)作用24 h后对HepG2细胞增殖的影响。将HepG2细
胞分为阴性对照组和柠檬酚低、高浓度组(50、100 μmol/L柠檬酚),加入相应药物作用24 h后,采用划痕试验检测细胞的迁移能力
并计算细胞迁移率,采用逆转录-聚合酶链式反应和 Western blotting 法检测细胞中聚合纤维状肌动蛋白(F-actin)、β-微管蛋白
(β-tubulin)及埃兹蛋白(Ezrin)的mRNA和蛋白表达水平。利用分子对接软件Schrodinger 2015分析柠檬酚与上述3种蛋白的分子
作用方式。结果:柠檬酚对HepG2细胞增殖具有显著抑制作用(P<0.05或P<0.01),且呈剂量依赖趋势。与阴性对照组比较,柠
檬酚低、高浓度组细胞迁移率和F-actin、β-tubulin、Ezrin 的mRNA及蛋白表达水平显著降低(P<0.05或P<0.01)。分子对接结果
显示,柠檬酚可与上述3种细胞骨架蛋白形成氢键和疏水键。结论:柠檬酚可抑制肝癌HepG2细胞的增殖和迁移;其作用机制可
能与下调F-actin、β-tubulin、Ezrin 的mRNA及蛋白表达有关;其与骨架相关蛋白的作用方式可能是形成氢键或疏水键。
关键词 柠檬酚;人肝癌HepG2细胞;增殖;迁移;骨架相关蛋白;分子对接
Study on the Effects of Citrusinol on the Proliferation,Migration and the Expression of Skeleton-related
Proteins of Human Hepatocellular Cells HepG2 and Its Interaction Mode with Skeleton-related Proteins
HUANG Zhoufeng ,HU Xiaoxi ,LU Guoshou ,HUANG Jianyou ,TAN Xiao(1. Guangxi Zhuang Autonomous
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Region Institute of TCM,Nanning 530022,China;2. Guangxi Key Laboratory of Traditional Chinese Medicine
Quality Standard,Nanning 530022,China)
ABSTRACT OBJECTIVE:To study the effects of citrusinol on proliferation,migration and the expression of skeleton-related
proteins of human hepatocellular cells HepG2,and to investigate its interaction mode with skeleton-related proteins. METHODS:
CCK-8 assay was used to detect the effects of different concentrations(12.5,25,50,100,200 μ mol/L)of citrusinol on the
proliferation of HepG2 cells for 24 h. HepG2 cells were divided into negative control group,citrusinol low-concentration and
high-concentration groups(50,100 μmol/L citrusinol). After treated for 24 h,the migration of HepG2 cells was detected by cell
scratch test;cell migration rate was calculated. mRNA and protein expression of F-actin,β-tubulin and Ezrin in HepG2 cells were
determined by RT-PCR and Western blotting assay. Molecular docking software Schrodinger 2015 was used to analyze the
interaction mode between citrusinol and above 3 kinds of proteins. RESULTS:Citrusinol showed significant inhibition effect on the
proliferation of HepG2 cells (P<0.05 or P<0.01),in dose-dependent trend. Compared with negative control group,cell
migration, mRNA and protein expression levels of F-actin, β-tubulin, Ezrin were decreased significantly in citrusinol
low-concentration and high-concentration groups(P<0.05 or P<0.01). Molecular docking results showed that the citrusinol could
form hydrogen bond and hydrophobic bond with the above 3 skeleton-related proteins. CONCLUSIONS:Citrusinol can inhibit the
proliferation and migration of HepG2 cells,the mechanism may be associated with the down-regulation of mRNA and protein
expression of F-actin,β-tubulin and Ezrin. The mode of its interaction with skeleton-related proteins may be the formation of
hydrogen bond or hydrophobic bond.
KEYWORDS Citrusinol;HepG2 cells;Proliferation;Migration;Skeleton-related proteins;Molecule docking
Δ 基金项目:广西自然科学基金青年科学项目(No.2017GXNSF-
BA198214);广 西 自 然 科 学 基 金 面 上 项 目(No.2019GXNS- 肝癌是常见的恶性肿瘤之一,发病率和病死率均很
FAA245081);广西科技计划项目(No.桂科 AD18216002,No.桂科 高。近年来研究发现,从中药中提取分离的天然有效成
AD17195002) 分在肿瘤疾病的治疗中起到了积极作用 。柠檬酚是从
[1]
*助理研究员,硕士。研究方向:天然药物化学。电话:0771-
壮瑶药材小槐花中分离得到的活性成分 ,是一种 A 环
[2]
5868986。E-mail:ferhung@126.com
并吡喃环黄酮类化合物(化学结构式见图1)。相关研究
# 通信作者:助理研究员,硕士。研究方向:天然药物化学。电
话:0771-5868986。E-mail:huxiaoxi0124@126.com 发现,具有A环并吡喃环黄酮结构的成分表现出良好的
中国药房 2020年第31卷第15期 China Pharmacy 2020 Vol. 31 No. 15 ·1849 ·