中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (14): 2224-2229.doi: 10.3969/j.issn.2095-4344.2015.14.016

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

神经生长因子修饰脂肪干细胞移植促进损伤脊髓的修复

王 勇,赵 伟,冯健洲,陈晓春   

  1. 沈阳医学院附属中心医院骨外四科,辽宁省沈阳市  110024
  • 修回日期:2015-04-11 出版日期:2015-04-02 发布日期:2015-04-02
  • 通讯作者: 陈晓春,硕士,主任医师,教授,沈阳医学院附属中心医院骨外四科,辽宁省沈阳市 110024
  • 作者简介:王勇,男,1980年生,辽宁省沈阳市人,汉族,2014年中国医科大学毕业,博士,主治医师,讲师,主要从事干细胞与脊髓损伤的基础研究。
  • 基金资助:

    辽宁省教育厅科学研究一般项目(L2014418);沈阳医学院科学研究基金项目(20121008,20132041);沈阳市卫生局青年基金项目

Nerve growth factor-modified adipose derived stem cells for repair of spinal cord injury  

Wang Yong, Zhao Wei, Feng Jian-zhou, Chen Xiao-chun   

  1. The 4th Department of Orthopedics, the Central Hospital Affiliated to Shenyang Medical College, Shenyang 110024, Liaoning Province, China
  • Revised:2015-04-11 Online:2015-04-02 Published:2015-04-02
  • Contact: Chen Xiao-chun, Master, Chief physician, Professor, the 4th Department of Orthopedics, the Central Hospital Affiliated to Shenyang Medical College, Shenyang 110024, Liaoning Province, China
  • About author:Wang Yong, M.D., Attending physician, Lecturer, the 4th Department of Orthopedics, the Central Hospital Affiliated to Shenyang Medical College, Shenyang 110024, Liaoning Province, China
  • Supported by:

    the Education Fund Item of Liaoning Province, No. L2014418; General Science Foundation of Shenyang Medical College, No. 20121008, 20132041; the Youth Fund of Shenyang Health Department

摘要:

背景:基因修饰的干细胞能够增加多肽和全长蛋白的分泌而起到保护脊髓损伤和促进神经元功能恢复的作用,因而成为近年来的研究热点。

目的:探讨神经生长因子修饰的脂肪干细胞移植对大鼠脊髓损伤的保护作用。
方法:贴壁培养法原代培养脂肪干细胞,免疫荧光法行表面标志物鉴定;脂质体介导神经生长因子质粒转染修饰脂肪干细胞,Real-time PCR及Western blot检测转染后神经生长因子的表达;改良Allen法构建大鼠脊髓损伤模型,将转染后的脂肪干细胞注射移植入大鼠脊髓损伤部位,BBB评分评估修复效果;脂肪干细胞移植后3周处死大鼠,Real-time PCR及Western blot检测移植后损伤节段脊髓中神经生长因子的表达。
结果与结论:原代培养脂肪干细胞获得成功,免疫荧光显示表面抗原CD29和CD44呈阳性表达;转染后脂肪干细胞中神经生长因子 mRNA及蛋白表达增高;转染神经生长因子的脂肪干细胞移植后,大鼠BBB评分明显升高,损伤节段脊髓中神经生长因子mRNA及蛋白表达明显升高。结果表明经神经生长因子转染修饰的脂肪干细胞可促进大鼠脊髓损伤修复。

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


全文链接:

关键词: 干细胞, 移植, 神经生长因子, 脂肪干细胞, 脊髓损伤, 基因修饰, 修复

Abstract:

BACKGROUND: Gene-modified stem cells can increase the secretion of peptides and full-length proteins to protect spinal cord injury and promote recovery of neuronal function, which thus become a research hotspot in recent years.

OBJECTIVE: To investigate the effect of nerve growth factor-modified adipose derived stem cells in repairing spinal cord injury in rats.
METHODS: Adipose derived stem cells were primarily cultured by adherent culture method and cell surface markers were detected by immunofluorescence method, while spinal cord injury models were set by modified Allen method. Nerve growth factor plasmid was transfected into adipose derived stem cells with Lipofectamine2000 and the expression of nerve growth factor was detected by real-time PCR and western blot. The modified adipose derived stem cells intervened by nerve growth factor were injected into the injured part of spinal cord injury rat models. Basso-Beattie-Bresnahan score was used to evaluate the repairing effect. Models rats were sacrificed at 3 weeks after cell transplantation. Real-time PCR and western blot were used to testify nerve growth factor expression in the injured spinal segment after cell transplantation.
RESULTS AND CONCLUSION: Adipose derived stem cells were successfully cultured primarily, and positive for CD29 and CD44; the mRNA and protein expression of nerve growth factor was elevated after plasmid transfection. The Basso-Beattie-Bresnahan score was elevated after transplantation of adipose derived stem cells intervened by nerve growth factor modification compared to control group; and the expression of nerve growth factor in the injured segment of the spinal cord was up-regulated detected by real-time PCR and western blot. These findings indicate that the nerve growth factor-modified adipose derived stem cells have repairing effects on spinal cord injury in rats.

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


全文链接:

Key words: Stem Cells, Adipose Tissue, Nerve Growth Factor, Spinal Cord Injuries

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