中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (7): 1090-1096.doi: 10.3969/j.issn.2095-4344.1066

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

人参皂苷Rg1对氧糖剥夺/复氧复糖损伤PC12细胞的保护机制

叶劲涛1,李锋涛1,宋焕瑾1,薛建利1,林  磊2,程  斌1   

  1.  (1西安交通大学医学院第二附属医院骨科,陕西省西安市  710004;2汉中市中心医院骨科,陕西省汉中市  723000)
  • 收稿日期:2018-09-07 出版日期:2019-03-08 发布日期:2019-03-08
  • 通讯作者: 程斌,博士,博士生导师,主任医师,西安交通大学医学院第二附属医院骨科,陕西西安市 710004
  • 作者简介:叶劲涛,男,1993年生,汉族,陕西省西安市人,西安交通大学在读博士,主要从事脊柱外科的研究。
  • 基金资助:

    陕西省自然科学基金面上项目(2014JM2_8157),项目负责人:程斌;陕西省自然科学基金面上项目(2016JM8129),项目负责人:宋焕瑾

Ginsenoside Rg1 protects against oxygen-glucose deprivation/reperfusion injury in PC12 cells

Ye Jintao1, Li Fengtao1, Song Huanjin1, Xue Jianli1, Lin Lei2, Cheng Bin1   

  1. (1Department of Orthopedics, Second Affiliated Hospital of Xi’an Jiaotong University Medical School, Xi’an 710004, Shaanxi Province, China; 2Department of Orthopedics, Hanzhong Central University, Hanzhong 723000, Shaanxi Province, China)
  • Received:2018-09-07 Online:2019-03-08 Published:2019-03-08
  • Contact: Cheng Bin, MD, Doctoral supervisor, Chief physician, Department of Orthopedics, Second Affiliated Hospital of Xi’an Jiaotong University Medical School, Xi’an 710004, Shaanxi Province, China
  • About author:Ye Jintao, Doctorate candidate, Department of Orthopedics, Second Affiliated Hospital of Xi’an Jiaotong University Medical School, Xi’an 710004, Shaanxi Province, China
  • Supported by:

    the Natural Science Foundation of Shaanxi Province (General Projects), No. 2014JM2_8157 (to CB) and 2016JM8129 (to SHJ)

摘要:

文章快速阅读:

文题释义:
缺血再灌注损伤:缺血一定时间恢复血液供应后,其功能不但未能恢复,却出现了更加严重的功能障碍,称为缺血/再灌注损伤,其机制较为复杂,主要与细胞凋亡、自由基过度形成、兴奋性氨基酸毒性作用、细胞内钙超载、炎性反应、线粒体损伤等多种机制有关。在体外模拟神经缺血再灌注损伤时,常使用大鼠肾上腺嗜铬细胞瘤细胞,因其具有:①胞体圆、明亮,可迅速增殖,生长速度较快,接种两三天后,即可在倒置显微镜下看到细胞的贴壁生长;②通过神经生长因子诱导,PC12细胞可以长出大量轴突,最长的轴突超过  500 μm,具有神经元的形态,并且表现出多种神经细胞的生理特性。
存活素(survivin):是凋亡蛋白抑制因子家族中最小的成员,包括142个氨基酸,其功能型为同型二聚体。在细胞中呈周期依赖性表达,与有丝分裂期纺锤体微管相互作用,调节G2/M期,并可直接抑制caspase-3和caspase-7的活性。在肿瘤发生发展中,存活素与肿瘤细胞的凋亡负相关,与细胞增殖活性和血管生成正相关。在缺血/再灌注中考虑其通过直接调控caspase家族参与凋亡,或者通过介导血管生成参与其中。
摘要
背景:
人参皂苷具有抗肿瘤、抗氧化、抗疲劳、抗衰老、降血脂、增强记忆力、提高免疫力等作用,其中Rb1和Rg1是人参皂苷的最主要的活性成分。但人参皂苷Rg1对氧糖剥夺诱导的PC12细胞凋亡是否也有保护作用,尚不清楚。
目的:观察人参皂苷Rg1预处理对于PC12细胞氧糖剥夺/复氧复糖模型中PC12细胞活力、survivin及caspase-3表达和细胞凋亡的影响。
方法:采用构建的PC12细胞氧糖剥夺/复氧复糖模型,并使用5,10,20,40 μmol/L的人参皂苷Rg1对其进行预处理,以正常细胞做对照。通过MTT法检测细胞活性,通过免疫细胞化学技术检测survivin及caspase-3蛋白,通过TUNEL法检测细胞凋亡。
结果与结论:①细胞活力检测氧糖剥夺/复氧复糖组细胞活性明显下降(P < 0.05),人参皂苷Rg1干预后药物组各亚组细胞活性均较氧糖剥夺/复氧复糖组有所恢复,但仍较正常组为低(P < 0.05);②人参皂苷Rg1干预使survivin阳性细胞增多,caspase-3阳性细胞和TUNEL阳性细胞计数值减少;③神经元凋亡出现与人参皂苷Rg1诱导的survivin成负相关,与caspase-3成正相关。④结果说明,人参皂苷Rg1对于PC12细胞氧糖剥夺/复氧复糖处理后的survivin蛋白表达具有促进作用,并通过促进survivin蛋白的表达来对抗caspase-3的表达,从而抑制细胞凋亡,且该作用具有剂量依赖关系。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0003-1572-627X(叶劲涛)

关键词: PC12细胞, 人参皂苷Rg1, survivin蛋白, caspase-3, 组织构建

Abstract:

BACKGROUND: Ginsenoside has anti-tumor, anti-oxidative, anti-fatigue, anti-aging, hypolipidemic, memory enhancement, immunity enhancement effects, and Rb1 and Rg1 are the most important active components of ginsenosides. However, it is unclear whether ginsenoside Rg1 also protects against apoptosis in PC12 cells induced by oxygen-glucose deprivation (OGD).
OBJECTIVE: To investigate the effects of pretreatment with ginsenoside Rg1 on PC12 cell viability, survivin and caspase-3 expression and apoptosis in PC12 cells induced by OGD/reperfusion.
METHODS: In the OGD/reperfusion model, the PC12 cells were pretreated with 5, 10, 20, 40 μmol/L ginsenoside Rg1. Normal cells were used as controls. Cell viability was determined by MTT assay. Expression of survivin and caspase-3 proteins was measured by immunocytochemistry. Apoptosis in PC12 cells was detected by TUNEL assay.
RESULTS AND CONCLUSION: (1) The cell viability was significantly decreased after OGD/reperfusion (P < 0.05). Pretreatment with ginsenoside Rg1 could elevate the cell viability, but it was still lower than the normal level (P < 0.05). (2) Pretreatment with ginsenoside Rg1 increased survivin positive cells, but decreased caspase-3 positive cells and TUNEL positive cells. (3) Neuronal apoptosis was negatively correlated with the ginsenoside Rg1-induced survivin, but positively correlated with the caspase-3. All these findings indicate that ginsenoside Rg1 pretreatment can promote the expression of survivin in PC12 cells after OGD/reperfusion, and moreover, this promotion effect on survivin can further inhibit the expression of caspase-3, thereby suppression apoptosis in PC12 cells, in a dose-dependent manner.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Ginsenosides, Caspase 3, Tissue Engineering

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