中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (9): 1332-1337.doi: 10.3969/j.issn.2095-4344.0461

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

二氮嗪对低氧环境下骨髓间充质干细胞增殖活力及凋亡的影响

李红波1,林诗炜1,姚江凌2,卞阳阳2,曲 野1,王雷涛2,彭 磊2   

  1. 1海南医学院第二附属医院;海南医学院研究生院,海南省海口市 570102;2海南医学院第一附属医院创伤中心,海南省海口市 570102
  • 修回日期:2017-12-21 出版日期:2018-03-28 发布日期:2018-04-03
  • 通讯作者: 彭磊,博士,主任医师,教授,海南医学院第一附属医院创伤中心,海南省海口市 570102
  • 作者简介:李红波,男,1983年生,湖北省孝感市人,汉族,2017年海南医学院研究生院毕业,硕士,主治医师,主要从事干细胞成骨诱导分化及关节损伤研究。 并列第一作者:林诗炜,男,1961年生,海南省琼海市人,汉族,1983年广州医科大学毕业,主任医师,主要从事骨关节外科、创伤骨科、运动创伤关节镜外科的工作。
  • 基金资助:

    国家自然科学基金(81460339);海南省自然科学基金(30863);海南医学院培育基金(HY2018-22)

Diazoxide effects on proliferation and apoptosis of bone marrow mesenchymal stem cells under hypoxic conditions

Li Hong-bo1, Lin Shi-wei1, Yao Jiang-ling2, Bian Yang-yang2, Qu Ye1, Wang Lei-tao2, Peng Lei2   

  1. 1The Second Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China; 2The First Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China
  • Revised:2017-12-21 Online:2018-03-28 Published:2018-04-03
  • Contact: Peng Lei, M.D., Chief physician, Professor, the First Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China
  • About author:Li Hong-bo, Master, Attending physician, the Second Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China. Lin Shi-wei, Chief physician, the Second Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China. Li Hongbo and Lin Shi-wei contributed equally to this work.
  • Supported by:

    the National Natural Science Foundation of China, No. 81460339; the Natural Science Foundation of Hainan Province, No. 30863; the Culture Fund of Hainan Medical University, No. HY2018-22

摘要:

文章快速阅读:

文题释义:
Mito-KATP通道:
线粒体内膜ATP依赖性K通道,Mito-KATP参与调节线粒体离子稳态,特别是在缺血再灌注损伤中,活性氧激活Mito-KATP通道可以提供内源性保护。
二氮嗪:Mito KATP 通道激活剂二氮嗪有助于减少氧自由基,有利于线粒体ATP能量转换,从而有利于细胞能量代谢和细胞分化。加入Mito KATP通道激活剂二氮嗪在一定浓度范围内对骨髓间充质干细胞的活力及增殖无明显影响,可以减少骨髓间充质干细胞凋亡的发生。

 

摘要
背景:
如何有效干预骨髓间充质干细胞进行缺氧预适应使得其移植后发挥应有的疗效是目前急需解决的问题。  
目的:探讨抗氧自由基药物Mito-KATP通道激活剂二氮嗪对低氧环境中小鼠骨髓间充质干细胞增殖活力及凋亡的影响。
方法:将购买的小鼠骨髓间充质干细胞分为4组:空白对照组、0.16 μmol/L二氮嗪组、0.8 μmol/L二氮嗪组、4 μmol/L二氮嗪组,各组在二氮嗪干预下放置于体积分数为10%O2培养箱培养。分别干预1,2,4,6,8 d进行MTT检测细胞增殖活性。干预后第14天进行Hoechst 33258染色,观察细胞凋亡情况。
结果与结论:①建系的小鼠骨髓间充质干细胞纯度较高,形态均一,但增殖分化能力较弱;②不同浓度二氮嗪作用下骨髓间充质干细胞活力差异无显著性意义(P > 0.05);③空白对照组细胞核浓缩,颜色深蓝,核聚集,发现数个类圆形凋亡小体,二氮嗪组偶发现凋亡小体,3个浓度二氮嗪组间无明显差异,3组均低于空白对照组;④一定浓度的抗氧自由基Mito KATP通道激活剂二氮嗪在低氧环境下(体积分数为10%O2)不影响小鼠骨髓间充质干细胞增殖活力但可减少细胞凋亡。

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:
0000-0002-3588-2600(李红波)

关键词: 干细胞, 骨髓间充质干细胞, 低氧环境, 二氮嗪, 细胞活力, 细胞凋亡, 国家自然科学基金

Abstract:

BACKGROUND: It is an urgent problem to effectively make bone marrow mesenchymal stem cells exert proper effects under hypoxic preconditioning.
OBJECTIVE: To investigate the effects of diazoxide, a Mito-KATP channel activator, on the proliferation and apoptosis of mouse BMSCs in hypoxic environment.
METHODS: Mouse BMSCs were divided into four groups: blank control group, 0.16, 0.8, 4 μmol/L diazoxide groups. Cells intervened by diazoxide were cultured in a 10% O2 incubator. MTT assay was performed to detect cell proliferation at 1, 2, 4, 6, 8 days after intervention, and Hoechst 33258 staining was performed to observe cell apoptosis at 14 days after intervention. 
RESULTS AND CONCLUSION: High homogeneity and purity but low proliferation of BMSCs was found. There was no significant difference in the activity of BMSCs among 0.16, 0.8, 4 μmol/L diazoxide groups (P > 0.05). In the blank control group, concentrated nuclei were dark blue in color and aggregated, and several round apoptotic bodies were found. In the diazoxide groups, apoptotic bodies were occasionally found, and no significant difference was found among different diazoxide groups. These findings indicate that a certain concentration of diazoxide can reduce cell apoptosis but has no effects on the proliferation of mouse BMSCs under hypoxic environment (10% O2).

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, Cell Hypoxia, Diazoxide, Apoptosis, Cell Proliferation, Tissue Engineering

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