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马钱苷对肝癌细胞HepG2增殖与凋亡的影响及机制研究 Δ
张 聪 ,胡 娜 ,李 珊 ,郑国华 ,邱振鹏 (1.湖北中医药大学药学院,武汉 430065;2.湖北医药学院基础
1*
1 #
2
3
1
医学院,湖北 十堰 442000;3.湖北中医药大学中药资源与中药复方教育部重点实验室,武汉 430065)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2020)07-0782-07
DOI 10.6039/j.issn.1001-0408.2020.07.04
摘 要 目的:研究马钱苷对肝癌细胞 HepG2 增殖及凋亡的影响,并探讨其作用机制。方法:运用 CCK-8 法检测不同质量浓度
(10、25、50、100、150、200、300、400 µg/mL)的马钱苷作用24、48 h对HepG2细胞增殖活性的影响。将HepG2细胞分为对照组和马
钱苷低、中、高浓度组(50、100、150 μg/mL),加药作用24 h后,采用Hoechst 33342荧光染色法检测细胞凋亡形态学变化;采用流式
细胞术检测细胞凋亡和周期分布情况;采用Western blotting法检测各组细胞中G1/S-特异性周期蛋白D1(Cyclin D1)、增殖细胞核
抗原(PCNA)、B 淋巴细胞瘤 2(Bcl-2)、胱天蛋白酶 3(Caspase-3)、活化的 Caspase-3(Cleaved-Caspase-3)、Caspase-9、Cleaved-Cas-
pase-9蛋白的表达水平。结果:马钱苷对HepG2细胞增殖具有抑制作用,且呈浓度依赖趋势。与对照组比较,马钱苷低、中、高浓
度组细胞出现核固缩、碎裂等凋亡现象,细胞凋亡率显著升高(P<0.01);细胞主要阻滞于S期;马钱苷低、中、高浓度组细胞中Cy-
clin D1、PCNA、Caspase-3蛋白的相对表达量均显著降低、Cleaved-Caspase-3蛋白的相对表达量均显著升高(P<0.05或P<0.01),
马钱苷中、高浓度组细胞中 Cleaved-Caspase-9 蛋白的相对表达量均显著升高、Bcl-2 和 Caspase-9 蛋白的相对表达量均显著降低
(P<0.05或P<0.01)。结论:马钱苷对HepG2细胞的增殖具有明显的抑制作用,并可诱导其凋亡,其作用机制可能与抑制Bcl-2蛋
白表达,促进Caspase-3、Caspase-9活化有关。
关键词 马钱苷;肝癌细胞HepG2;增殖;凋亡;机制
Study on the Effects of Loganin on the Proliferation and Apoptosis of Liver Cancer HepG2 Cells and Its
Mechanism
ZHANG Cong ,HU Na ,LI Shan ,ZHENG Guohua ,QIU Zhenpeng(1.College of Pharmacy,Hubei University
2
1
1
1
3
of TCM,Wuhan 430065,China;2.College of Basic Medicine,Hubei University of Medicine,Hubei Shiyan
442000,China;3.Key Laboratory of Chinese Medicine Resource and Compound Prescription,Ministry of
Education,Hubei University of TCM,Wuhan 430065,China)
ABSTRACT OBJECTIVE:To study the effects of loganin on the proliferation and apoptosis of liver cancer HepG2 cells,and to
explore its mechanism. METHODS:CCK-8 assay was used to detect the effects of different concentrations(10,25,50,100,
150,200,300,400 µg/mL)of loganin on the proliferation activity of HepG2 cells for 24 and 48 h. HepG2 cells were divided into
control group,loganin low-concentration,medium-concentration and high-concentration groups (50,100,150 μ g/mL). After
treated for 24 h,morphological changes of apoptosis of cells were detected by Hoechst 33342 fluorescence staining. The apoptosis
and cycle distribution of cells were detected by flow cytometry. Western blotting was used to detect protein expression of Cyclin
D1, PCNA, Bcl-2, Caspase-3, Cleaved-Caspase-3, Caspase-9 and Cleaved-Caspase-9. RESULTS: Loganin inhibited the
proliferation of HepG2 cells, in concentration-dependent trend. Compared with control group, apoptosis as pyknosis and
fragmentation occurred,and the apoptosis rate increased significantly in loganin low-concentration,medium-concentration and
high-concentration groups(P<0.01);the cell were mainly blocked in S phase;relative protein expression of Cyclin D1,PCNA
and Caspase-3 were significantly decreased, while that of Cleaved-Caspase-3 were significantly increased in loganin low-
concentration, medium-concentration and high-concentration groups (P<0.05 or P<0.01); relative protein expression of
Cleaved-Caspase-9 were increased significantly, while that of Bcl-2 and Caspase-9 were decreased significantly in loganin
medium-concentration and high-concentration groups(P<0.05 or P<0.01). CONCLUSIONS:Loganin can significantly inhibit the
proliferation and induce apoptosis of HepG2 cells,the mechanism of which may be associated with inhibiting Bcl-2 protein
expression and promoting Caspase-3,Caspase-9 activation.
KEYWORDS Loganin;Liver cancer HepG2 cells;Prolifera-
Δ 基金项目:国家自然科学基金资助项目(No.81603338);武当特
tion;Apoptosis;Mechanism
色中药研究湖北省重点实验室开放课题(No.WDCM2018006)
* 硕 士 研 究 生 。 研 究 方 向 :中 药 新 制 剂 、新 剂 型 。 E-mail:
肝癌是临床上常见的肝脏恶性肿瘤,其发病率居世
zzcyyc520@126.com
[1]
# 通信作者:副教授,硕士生导师。研究方向:天然药物药效学与 界肿瘤发病率第5位 ,病死率仅次于肺癌,位居世界恶
毒理学。E-mail:whuqq@hotmail.com 性肿瘤病死率的第 2 位 [2-3] 。流行病学研究报告显示,
·782 · China Pharmacy 2020 Vol. 31 No. 7 中国药房 2020年第31卷第7期