吉林大学学报(医学版) ›› 2015, Vol. 41 ›› Issue (02): 249-254.doi: 10.13481/j.1671-587x.20150209

• 基础研究 • 上一篇    下一篇

纳米SiO2对人神经母细胞瘤SH-SY5Y细胞的凋亡诱导作用及其机制

杨艳艳1, 金明华1, 李艳博2, 李阳2, 王佳慧1, 郑彤1, 王思惠1, 迟翔宇1, 张宇佳1, 孙志伟1,2   

  1. 1. 吉林大学公共卫生学院卫生检验学教研室, 吉林 长春 130021;
    2. 首都医科大学公共卫生学院卫生毒理与卫生化学学系, 北京 100069
  • 收稿日期:2014-11-18 出版日期:2015-03-28 发布日期:2015-04-04
  • 通讯作者: 孙志伟, 教授, 博士研究生导师(Tel:010-83911507, E-mail:zwsun@hotmail.com);金明华, 副教授, 硕士研究生导师(Tel:0431-85619441, E-mail:jinmh@jlu.edu.cn) E-mail:zwsun@hotmail.com;jinmh@jlu.edu.cn
  • 作者简介:杨艳艳(1986-), 女, 黑龙江省黑河市人, 在读医学硕士, 主要从事卫生毒理学方面的研究。
  • 基金资助:

    国家自然科学基金资助课题(81172704);吉林大学大学生创新创业项目资助课题(20130943)

Induction effect of nano- SiO2 on apoptosis of neuroblastoma SH-SY5Y cells and its mechanism

YANG Yanyan1, JIN Minghua1, LI Yanbo2, LI Yang2, WANG Jiahui1, ZHENG Tong1, WANG Sihui1, CHI Xiangyu1, ZHANG Yujia1, SUN Zhiwei1,2   

  1. 1. Department of Health Inspection, School of Public Health, Jilin University, Changchun 130021, China;
    2. Department of Sanitary Chemistry and Toxicology, School of Public Health, Capital Medical University, Beijing 100069, China
  • Received:2014-11-18 Online:2015-03-28 Published:2015-04-04

摘要:

目的:探讨纳米二氧化硅(SiO2)对人神经母细胞瘤SH-SY5Y细胞凋亡和周期的影响,阐明其作用机制。方法:选取不同浓度粒径为90 nm的SiO2颗粒作用于SH-SY5Y细胞,分别为0、3.125、6.250、12.500、25.000、50.000 mg·L-1 SiO2组,其中0 mg·L-1组为对照组。MTT法检测各组SH-SY5Y细胞存活率;采用AO/EB染色和 Annexin Ⅴ-FITC/PI法检测各组细胞凋亡率;流式细胞术(FCM)检测细胞周期百分比和细胞中活性氧(ROS)水平。结果:MTT检测,6.250、12.500、25.000和50.000 mg·L-1 SiO2组细胞存活率低于对照组 (P<0.05),12.500、25.000和50.000 mg·L-1 SiO2组细胞存活率低于3.125 mg·L-1 SiO2组 (P<0.05)。AO/EB染色和 Annexin V-FITC/PI法检测,6.250、12.500、25.000和50.000 mg·L-1 SiO2组细胞凋亡率高于对照组(P<0.05),12.500、25.000和50.000 mg·L-1 SiO2组细胞凋亡率高于3.125 mg·L-1 SiO2组(P<0.05)。FCM检测,3.125、6.250、12.500、25.000和50.000 mg·L-1 SiO2组细胞中ROS水平高于对照组 (P<0.05)。25.000和50.000 mg·L-1 SiO2组G0/G1期细胞百分比低于3.125 mg·L-1SiO2组和对照组(P<0.05),50.000 mg·L-1 SiO2组G2/M期细胞百分比高于对照组 (P<0.05)。结论:纳米SiO2 可降低SH-SY5Y细胞的活力,诱导细胞凋亡,增加细胞中ROS水平,可干扰细胞周期进程,对SH-SY5Y细胞的增殖具有抑制作用。

关键词: 纳米二氧化硅, SH-SY5Y细胞, 细胞周期, 细胞凋亡

Abstract:

Objective To observe the effects of nano-SiO2 on apoptosis and cell cycle of human neuroblastoma SH-SY5Y cells,and to explore the mechanism.Methods The SH-SY5Y cells were treated with different concentrations of 90 nm SiO2 and divided into 0,3.125,6.250,12.500,25.000, and 50.000 mg·L-1 SiO2 groups. The survival rates of the cells in various groups were assessed by MTT method;the apoptotic rates of SH-SY5Y cells were determined by AO/EB staining and Annexin Ⅴ-FITC/P method; the percentage of cell cycle and the level of intracellular reactive oxygen species(ROS) were tested by flow cytometry(FCM) method.Results The MTT results showed the survival rates of the cells in 6.250,12.500,25.000 and 50.000 mg·L-1 SiO2 groups were significantly lower than that in control group (P<0.05);the survival rates of the cells in 12.500,25.000, and 50.000 mg·L-1 SiO2 groups were significantly lower than that in 3.125 mg·L-1 SiO2 group (P<0.05); the AO/EB staining and Annexin Ⅴ-FITC/PI results showed the apoptotic rates of the cells in 6.250,12.500,25.000,and 50.000 mg·L-1 SiO2 groups were higher than that in control group(P<0.05);the apoptotic rates of the cells in 12.500,25.000,and 50.000 mg·L-1 SiO2 groups were higher than that in 3.125 mg·L-1 group(P<0.05).The FCM results showed the levels of ROS of the cells in 3.125,6.250,12.500,25.000, and 50.000 mg·L-1 SiO2 groups were significantly higher than that in control group (P<0.05); compared with control group,the percentages of the cells at G0/G1 phase in 25.000 and 50.000 mg·L-1 SiO2 groups were increased (P<0.05);the percentage of the cells at G2/M phase in 50.000 mg·L-1 SiO2 group was increasd (P<0.05).Conclusion Nano-SiO2 can decrease the activity of SH-SY5Y cells and increase the apoptosis and the level of ROS,and nano-SiO2 can interfere the cell cycle and inhibit the proliferation of SH-SY5Y cells.

Key words: nano-SiO2, SH-SY5Y cells, cell cycle, apoptosis

中图分类号: 

  • R730.264