Experimental Study of the Inhibiting Effects of Ilexgenin A from Ilex Hainanensis on Tumor Cell HepG2

LI Hong-liang1; XU Xian-yun2; SUN Li-bo3; CHEN Qi-lai1

doi:10.13422/j.cnki.syfjx.2012.15.071

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Experimental Study of the Inhibiting Effects of Ilexgenin A from Ilex Hainanensis on Tumor Cell HepG2

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- Experimental Study of the Inhibiting Effects of Ilexgenin A from Ilex Hainanensis on Tumor Cell HepG2
- Chinese Journal of Experimental Traditional Medical Formulae Vol. 18, Issue 15, Pages: 238-241(2012)
- 作者机构：
  
  1. 赣南医学院药学院
  2. 赣南医学院基础医学院
  3. 青岛大学医学院附属医院
- 作者简介：
- 基金信息：
- DOI：10.13422/j.cnki.syfjx.2012.15.071
  CLC： R285.5
- Published：2012
- 稿件说明：
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[1]李洪亮,徐仙赟,孙立波,程齐来.山绿茶中Ilexgenin A对HepG2肿瘤细胞抑制作用的研究[J].中国实验方剂学杂志,2012,18(15):238-241.

LI Hong-liang1, XU Xian-yun2, SUN Li-bo3, et al. Experimental Study of the Inhibiting Effects of Ilexgenin A from Ilex Hainanensis on Tumor Cell HepG2[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(15): 238-241.
[1]李洪亮,徐仙赟,孙立波,程齐来.山绿茶中Ilexgenin A对HepG2肿瘤细胞抑制作用的研究[J].中国实验方剂学杂志,2012,18(15):238-241. DOI： 10.13422/j.cnki.syfjx.2012.15.071.

LI Hong-liang1, XU Xian-yun2, SUN Li-bo3, et al. Experimental Study of the Inhibiting Effects of Ilexgenin A from Ilex Hainanensis on Tumor Cell HepG2[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(15): 238-241. DOI： 10.13422/j.cnki.syfjx.2012.15.071.

摘要

目的:探讨3β

19α-二羟基乌苏-12-烯-24

28-二羧酸（IA）对肝癌细胞株HepG2细胞周期、凋亡的影响及其作用机制。方法:人肝癌细胞株HepG2以IA 20

80 g·L-1作用不同的时间后

分别使用四甲基偶氮唑蓝比色法（MTT）

吖啶橙（AO）荧光染色法

免疫细胞化学SP法

流式细胞术检测HepG2细胞的增殖抑制情况

细胞周期和凋亡的形态学变化

以及细胞内凋亡相关蛋白Bcl-2

Bax表达的变化。结果:IA对HepG2细胞增殖有抑制作用

其作用随着药物浓度和作用时间的增加而增强。IA作用24 h后HepG2细胞周期的主要特点是大量细胞累积于G1期

进入S期的细胞减少

IA能够诱导HepG2细胞凋亡

IA（40

80 g·L-1）经过24 h作用后

细胞凋亡率分别为7.89%

8.37%

9.93%

AO染色观察到大量凋亡细胞

凋亡细胞染色减弱、荧光较暗、呈均匀一致的圆状或固缩状

细胞内Bcl-2的表达随着药物浓度增加逐渐减少;Bax蛋白的表达随着药物浓度增加逐渐增加。结论:IA能够抑制HepG2细胞的增殖

并使细胞大量累积于G1期

进入S期的细胞减少

通过影响凋亡蛋白表达诱导细胞凋亡。

Abstract

Objective:To investigate the proliferation inhibition and apoptosis in human hepatic cancer cell strain HepG2 by ilexgenin A and its mechanism.Method:HepG2 were treated by iexgenin A with different concentration and time.MTT assay

around totally orange（AO） fluorescence staining method

flow cytometry（FCM）

SP method of immunocytechemistry were used to determine the inhibiting effect on HepG2 cells

the cell cycle and apoptosis morphological changes and the expressions of Bcl-2

Bax.Result:Ilexgenin A inhibited the proliferation of HepG2 cells in dosage and time dependent manner.After HepG2 cells were treated by ilexgenin A for 24 hour

ilexgenin A induced a G1 cell cycle arrest and reduced the cell population in S phase and the apoptosis rate were 7.89%

8.37%

9.93%

respectively.With the increasing of the medicine density

the expression of Bcl-2 was down-regulated

while the expression of Bax up-regulated in the apoptosis.Conclusion:Ilexgenin A can inhibit proliferation of the HepG2 cells and induced a G1 cell cycle arrest and reduced the cell population in S phase.It also can induce apoptosis of human prostatic carcinoma through down-regulating the expressions of Bcl-2

up-regulating the expression of Bax.

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