中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (13): 1982-1988.doi: 10.3969/j.issn.2095-4344.1678

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

低浓度过氧化氢预处理增强骨髓间充质干细胞抗氧化应激损伤的能力

袁大江,彭吾训,张 飞,王贞文,郑应刚   

  1. 贵州医科大学,贵州省贵阳市 550004
  • 修回日期:2018-12-19 出版日期:2019-05-08 发布日期:2019-05-08
  • 通讯作者: 彭吾训,博士,教授,主任医师,贵州医科大学,贵州省贵阳市 550004
  • 作者简介:袁大江,男,山东省阳谷县人,汉族,贵州医科大学在读硕士,主要从事股骨头坏死方面的研究。
  • 基金资助:

    贵州省科技厅贵州医科大学联合基金课题(黔科合LH字[2017]7197号),项目参与人:彭吾训;贵州省卫计委基金项目(gzwjkj 2016-1-001),项目参与人:彭吾训;贵阳市科技局基金项目(GY2016-3),项目负责人:彭吾训

Preincubation with low-concentration hydrogen peroxide enhances anti-oxidative stress ability of bone marrow mesenchymal stem cells

Yuan Dajiang, Peng Wuxun, Zhang Fei, Wang Zhenwen, Zheng Yinggang   

  1. Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Revised:2018-12-19 Online:2019-05-08 Published:2019-05-08
  • Contact: Peng Wuxun, MD, Professor, Chief physician, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • About author:Yuan Dajiang, Master candidate, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Supported by:

    Guizhou Provincial Department of Technology & Guizhou Medical University Joint Fund Project, No. LH[2017]7197 (to PWX); Guizhou Province Health and Welfare Commission Fund Project, No. gzwjkj 2016-1-001 (to PWX); Guiyang Science and Technology Bureau Fund Project, No. GY2016-3 (to PWX)

摘要:

文章快速阅读:

文题释义:
氧化应激:
是指体内活性氧的生成增加和/或清除能力降低,氧化与抗氧化防御系统的失衡,导致细胞内产生过量的活性氧,过量的活性氧会改变细胞内的氧化还原状态,过氧化损伤DNA、蛋白质、脂质等生物大分子,改变完整的细胞结构和功能,活性氧损害线粒体,导致线粒体电子传递链功能障碍和凋亡诱导因子释放,触发多种信号转导途径,最终诱导细胞凋亡。
预处理:是指生物体在低于生理阈值的应激刺激下提高其自身稳态性或抗应激刺激能力以求生存的处理。目前,常用的预处理手段包括物理、化学、药物以及基因修饰等手段,使细胞处于最佳备用状态,以适应体外刺激和抵抗移植后所面临的严重致死性缺血缺氧、氧化应激损伤。过氧化氢预处理是指1次或多次短暂、非致死性低浓度过氧化氢预处理后,细胞获得了对更严重甚至致死性氧化应激耐受性的过程。

 

摘要
背景:
骨髓间充质干细胞移植促进骨坏死区血管再生和骨重建,取得了一定疗效,但是骨坏死区氧化应激微环境极大地限制了移植后骨髓间充质干细胞的存活、增殖和成骨分化能力,降低了对骨坏死区的修复作用。
目的:探讨低浓度过氧化氢预处理对骨髓间充质干细胞抗氧化应激损伤的影响。  
方法:取生长良好的第3代兔骨髓间充质干细胞,实验分为3组:空白对照组,高浓度过氧化氢持续处理组(500 µmol/L过氧化氢处理24 h),低浓度过氧化氢预处理组(50 µmol/L过氧化氢预处理8 h,恢复12 h,再用500 µmol/L过氧化氢处理24 h)。根据实验分组条件进行过氧化氢处理,采用DCFH-DA荧光染料检测细胞活性氧水平,ELISA法检测各组细胞超氧化物歧化酶、过氧化氢酶活力,比色法检测各组细胞丙二醛水平,JC-1法检测细胞线粒体膜电位,CCK-8法检测细胞活力,流式细胞仪和TUNEL/DAPI双染法检测细胞凋亡。
结果与结论:①与高浓度过氧化氢持续处理组相比,低浓度过氧化氢预处理组可有效减少骨髓间充质干细胞内活性氧产生(P < 0.05);同时,低浓度过氧化氢预处理组超氧化物歧化酶、过氧化氢酶活力明显升高(P < 0.05),丙二醛水平明显降低(P < 0.05),线粒体膜电位损伤减轻(P < 0.05),细胞存活率提高(P < 0.05),细胞凋亡减少(P < 0.05);②结果表明低浓度过氧化氢预处理可显著增强骨髓间充质干细胞抗氧化应激损伤能力。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID: 0000-0003-1042-5013(袁大江)

关键词: 骨髓间充质干细胞, 氧化应激, 过氧化氢, 预处理, 活性氧, 线粒体膜电位, 细胞凋亡

Abstract:

BACKGROUND: Bone marrow mesenchymal stem cell transplantation promotes vascular regeneration and bone remodeling in osteonecrosis area, and has achieved certain effects. However, the oxidative stress microenvironment in osteonecrosis area greatly limits the survival, proliferation and osteogenesis of bone marrow mesenchymal stem cells after transplantation, reducing the repairing effect on the osteonecrosis area.
OBJECTIVE: To investigate the effect of low-concentration hydrogen peroxide (H2O2) pretreatment on the anti-oxidative stress injury to bone marrow mesenchymal stem cells.
METHODS: The third generation of well-growing bone marrow mesenchymal stem cells were divided into three groups: blank control group, high-concentration H2O2 treatment group (500 µmol/L H2O2 treatment for 24 hours), low-concentration H2O2 pretreatment group (50 µmol/L H2O2 pretreatment for 8 hours, recovery for 12 hours, and then 500 µmol/L H2O2 treatment for 24 hours). Cellular level of reactive oxygen species was detected by DCFH-DA fluorescent dye; superoxide dismutase and catalase activities were detected by ELISA; malondialdehyde content was detected by colorimetry; mitochondrial membrane potential was detected by JC-1; cell viability was detected by cell counting kit-8; and cell apoptosis was detected by flow cytometry and TUNEL/DAPI double staining.
RESULTS AND CONCLUSION: Compared with the high-concentration H2O2 treatment group, the low-concentration H2O2 pretreatment group could effectively reduce the production of reactive oxygen species in the bone marrow mesenchymal stem cells (P < 0.05); meanwhile, the low-concentration H2O2 pretreatment group showed significantly increased superoxide dismutase and catalase activities (P < 0.05), decreased malondialdehyde content (P < 0.05), reduced mitochondrial membrane potential damage (P< 0.05), increased cell survival rate (P < 0.05) and decreased cell apoptosis (P < 0.05). These findings indicate that low-concentration H2O2 pretreatment could significantly enhance the ability of bone marrow mesenchymal stem cells to resist oxidative stress injury.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Bone Marrow, Mesenchymal Stem Cells, Hydrogen Peroxide, Membrane Potential, Mitochondrial, Apoptosis, Tissue Engineering

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