中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (7): 1014-1018.doi: 10.3969/j.issn.2095-4344.2165

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

过氧化物还原酶6干预骨髓间充质干细胞增殖及体外向神经谱系诱导分化

伦志刚,金  晶,王添艳,李爱民   

  1. 徐州医科大学附属连云港医院,江苏省连云港市   222002
  • 收稿日期:2020-02-21 修回日期:2020-02-28 接受日期:2020-04-11 出版日期:2021-03-08 发布日期:2020-12-08
  • 通讯作者: 李爱民,主任医师,教授,徐州医科大学附属连云港医院,江苏省连云港市 222002
  • 作者简介:伦志刚,男,1990年生,徐州医科大学在读硕士,主要从事神经修复方面的研究。
  • 基金资助:
    连云港市第一人民医院青年英才基金(QN1702)

Effect of peroxiredoxin 6 on proliferation and differentiation of bone marrow mesenchymal stem cells into neural lineage in vitro

Lun Zhigang, Jin Jing, Wang Tianyan, Li Aimin   

  1. Lianyungang Hospital, Xuzhou Medical University, Lianyungang 222002, Jiangsu Province, China
  • Received:2020-02-21 Revised:2020-02-28 Accepted:2020-04-11 Online:2021-03-08 Published:2020-12-08
  • Contact: Li Aimin, Chief physician, Professor, Lianyungang Hospital, Xuzhou Medical University, Lianyungang 222002, Jiangsu Province, China
  • About author:Lun Zhigang, Master candidate, Lianyungang Hospital, Xuzhou Medical University, Lianyungang 222002, Jiangsu Province, China
  • Supported by:
    the Young Talents Fund of the First People’s Hospital of Lianyungang, No. QN1702

摘要:

文题释义:
骨髓间充质干细胞:是来源于骨髓的一类多能干细胞,在特定条件下可定向分化为神经谱系细胞并修复受损神经,是目前组织工程及再生医学领域研究最为深入的种子细胞之一,在神经系统损伤修复研究中具有广阔的应用前景。
过氧化物还原酶:属抗氧化蛋白超家族,是非硒依赖过氧化物酶家族蛋白,其作为氧化应激内源性生物标记物广泛存在于各种生物体内。哺乳动物的过氧化物还原酶家族含有6个成员,过氧化物还原酶6具有非硒依赖性谷胱甘肽过氧化物酶和非钙离子依赖性磷脂酶A2双重活性,在机体抵抗氧化应激损伤及细胞生长发育等方面具有重要的作用,参与了多种中枢神经系统疾病的发生、发展及转归。

背景:目前已发现许多物质能够体外促进骨髓间充质干细胞向神经谱系分化,过氧化物还原酶6对骨髓间充质干细胞的影响尚未见相关研究。
目的:探索过氧化物还原酶6对大鼠骨髓间充质干细胞增殖以及体外向神经谱系诱导分化的影响。
方法:体外通过全骨髓贴壁培养法获得SD大鼠骨髓间充质干细胞,传到第3代分为5组:PBS溶媒组、1,10,100 μg/L和1 mg/L过氧化物还原酶6组,CCK-8法检测各组细胞450 nm处的吸光度值,连续测9 d绘制细胞生长曲线;结合生长曲线,酶联免疫检测仪重复测定平台期波长为450 nm的吸光度值。然后选择相对最适质量浓度过氧化物还原酶6诱导骨髓间充质干细胞向神经谱系分化,以PBS为对照组,诱导分化7 d采用免疫荧光染色和Western blot检测神经元标记蛋白NSE、胶质细胞标记蛋白GFAP的表达。
结果与结论:①1,10,100 μg/L过氧化物还原酶6组符合骨髓间充质干细胞一般生长规律,10 μg/L为最适质量浓度;②过氧化物还原酶6诱导后可见NSE、GFAP免疫荧光染色阳性,NSE、GFAP蛋白表达高于对照组;③体外实验结果表明,适量质量浓度的过氧化物还原酶6具有促进骨髓间充质干细胞增殖以及向神经谱系诱导分化的作用。

https://orcid.org/0000-0002-7581-0396(李爱民) 
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

关键词: 干细胞, 骨髓间充质干细胞, 还原酶, 神经, 神经谱系, 因子, 大鼠, 实验

Abstract:

BACKGROUND: It has been found that many substances can promote the differentiation of bone marrow mesenchymal stem cells into neural lineage in vitro, but the effect of peroxiredoxin 6 on bone marrow mesenchymal stem cells has not been studied.  

OBJECTIVE: To explore the effects of peroxiredoxin 6 on the proliferation of rat bone marrow mesenchymal stem cells and the ability to differentiate into neural lineages in vitro. 

METHODS: Bone marrow mesenchymal stem cells of Sprague-Dawley rats were cultured and passaged by whole bone marrow adherent culture in vitro into passage 3. The cells were assigned to five groups: PBS group, 1, 10, 100 μg/L and 1 mg/L peroxiredoxin 6 groups. CCK-8 assay was used to measure the absorbance at 450 nm of each group of cells for 9 consecutive days. Cell growth curves were drawn. Enzyme linked immunosorbent assay was utilized to measure absorbance at 450 nm in platform period. A relatively optimal concentration of peroxiredoxin 6 was selected to induce bone marrow mesenchymal stem cells to differentiate into neural lineages. PBS served as the control group. After 7 days of differentiation, immunofluorescence staining and western blot assay were used to detect the expression of neuronal marker protein NSE and glial cell marker protein GFAP.
RESULTS AND CONCLUSION: (1) 1, 10 and 100 μg/L peroxiredoxin 6 groups complied with the general growth rule of bone marrow mesenchymal stem cells, and 10 μg/L was the optimal mass concentration. (2) NSE and GFAP immunofluorescence staining showed positive reaction after peroxiredoxin 6 induction; NSE and GFAP expression levels were higher than those in the control group. (3) The results of in vitro experiments show that the proper concentration of peroxiredoxin 6 can promote the proliferation of bone marrow mesenchymal stem cells and induce differentiation into neural lineage.

Key words: stem cells, bone marrow mesenchymal stem cells, reductases, nerve, neural lineage, factor, rats, experiment

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