中国神经再生研究(英文版) ›› 2015, Vol. 10 ›› Issue (9): 1498-1506.doi: 10.4103/1673-5374.165523

• 原著:周围神经损伤修复保护与再生 • 上一篇    下一篇

转染神经因子的骨髓间充质干细胞复合脱细胞同种异体神经修复周围神经缺损

  

  • 收稿日期:2015-07-05 出版日期:2015-09-28 发布日期:2015-09-28

Repair of peripheral nerve defects with chemically extracted acellular nerve allografts loaded with neurotrophic factors-transfected bone marrow mesenchymal stem cells

Yan-ru Zhang1, 2, Ka Ka1, Ge-chen Zhang3, Hui Zhang3, Yan Shang4, Guo-qiang Zhao5, Wen-hua Huang2   

  1. 1 Medical College, Henan Polytechnic University, Jiaozuo, Henan Province, China
    2 Institute of Clinical Anatomy, Southern Medical University, Guangzhou, Guangdong Province, China
    3 Department of Orthopedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
    4 Department of Laboratory Medicine, Children’s Hospital of Zhengzhou, Zhengzhou, Henan Province, China
    5 School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan Province, China
  • Received:2015-07-05 Online:2015-09-28 Published:2015-09-28
  • Contact: Wen-hua Huang, Ph.D. or Yan-ru Zhang, jiaoxueban2010@126.com.

摘要:

课题组以往研究表明,化学脱细胞同种异体神经复合脑源性神经营养因子(或睫状神经营养因子)转染至骨髓间充质干细胞移植可促进缺损坐骨神经的修复,修复效果优于单独应用化学脱细胞同种异体神经或脱细胞同种异体神经复合间充质干细胞移植。由此设想转染两种营养因子的骨髓间充质干细胞与化学脱细胞同种异体神经复合移植能否达到更好的修复效果?结果发现,移植后8周,与单独一种神经营养因子转染骨髓间充质干细胞移植相比,转染脑源性神经营养因子和睫状神经营养因子骨髓间充质干细胞复合脱细胞同种异体神经移植大鼠坐骨神经功能指数、小腿三头肌湿质量恢复率、髓鞘厚度、有髓神经纤维总数,运动诱发电位波幅、神经传导速度均增高,运动诱发电位的潜伏期逐渐缩短。结果证实,复合脑源性神经营养因子和睫状神经营养因子共同转染的骨髓间充质干细胞的脱细胞同种异体神经桥接修复缺损坐骨神经能达到更好的修复效果。

关键词: 神经再生, 周围神经损伤, 化学脱细胞同种异体神经, 脑源性神经营养因子, 睫状神经营养因子, 骨髓间充质干细胞, 转染, 周围神经, 缺损, 细胞培养, 修复

Abstract:

Chemically extracted acellular nerve allografts loaded with brain-derived neurotrophic factor-transfected or ciliary neurotrophic factor-transfected bone marrow mesenchymal stem cells have been shown to repair sciatic nerve injury better than chemically extracted acellular nerve allografts alone, or chemically extracted acellular nerve allografts loaded with bone marrow mesenchymal stem cells. We hypothesized that these allografts compounded with both brain-derived neurotrophic factor- and ciliary neurotrophic factor-transfected bone marrow mesenchymal stem cells may demonstrate even better effects in the repair of peripheral nerve injury. We cultured bone marrow mesenchymal stem cells expressing brain-derived neurotrophic factor and/or ciliary neurotrophic factor and used them to treat sciatic nerve injury in rats. We observed an increase in sciatic functional index, triceps wet weight recovery rate, myelin thickness, number of myelinated nerve fibers, amplitude of motor-evoked potentials and nerve conduction velocity, and a shortened latency of motor-evoked potentials when allografts loaded with both neurotrophic factors were used, compared with allografts loaded with just one factor. Thus, the combination of both brain-derived neurotrophic factor and ciliary neurotrophic factor-transfected bone marrow mesenchymal stem cells can greatly improve nerve injury.

Key words: nerve regeneration, peripheral nerve injury, brain-derived neurotrophic factor, ciliary neurotrophic factor, chemically extracted acellular nerve allografts, bone marrow mesenchymal stem cells, peripheral nerve, neural regeneration