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Combined Treatment of Neurotrophin-3 Gene and Neural Stem Cells Is Propitious to Functional Recovery After Spinal Cord Injury

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We present an insight of the effects of combination therapy with neurotrophin-3 and neural stem cell on functional recovery after spinal cord injury (SCI). Total RNA was extracted from neural stem cell line C17.2 and reversed transcribed into cDNA. Neurotrophin-3 (NT-3) gene was amplified by PCR and subcloned into plasmid to construct an expression vector pNT-3. A positive clone containing pNT-3, named SHN2, was obtained and used for transplantation. Thirty adult mice received mechanical injury at the T8 vertebra level. Cell survival, NT-3 gene expression, and functional recovery were observed through X-Gal staining, RT-PCR, and open field locomotion, respectively. The results show that NT-3 gene comprising 777 bp nucleotides was cloned and a more than twofold expression was detected when transfected into neural stem cell line C17.2. Quantitative analysis of cellular density revealed a significant increase in SHN2 compared to the control cells (p < 0.01). Thirty days after transplantation, SHN2 showed significant increase near the lesion site. Furthermore, the functional recovery indicated an active effect by detecting Basso-Beattie-Bresnahan (BBB) locomotor rating scale (p < 0.01). In conclusion, combined treatment of neural stem cells and NT-3 gene can facilitate functional recovery. It offers an effective approach to treat SCI.
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Keywords: Functional recovery; Neural stem cells; Neurotrophis-3; Spinal cord injury; Transplantation

Document Type: Research Article

Affiliations: 1: Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, Shanghai 200444, China 2: Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, Shanghai 200444, China, Institute of Systems Biology, Shanghai University, Shanghai 200444, China

Publication date: 2007-05-01

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  • Cell Transplantation publishes original, peer-reviewed research and review articles on the subject of cell transplantation and its application to human diseases. To ensure high-quality contributions from all areas of transplantation, separate section editors and editorial boards have been established. Articles deal with a wide range of topics including physiological, medical, preclinical, tissue engineering, and device-oriented aspects of transplantation of nervous system, endocrine, growth factor-secreting, bone marrow, epithelial, endothelial, and genetically engineered cells, among others. Basic clinical studies and immunological research papers are also featured. To provide complete coverage of this revolutionary field, Cell Transplantation will report on relevant technological advances, and ethical and regulatory considerations of cell transplants. Cell Transplantation is now an Open Access journal starting with volume 18 in 2009, and therefore there will be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow work to be disseminated to a wider audience and also entitle the corresponding author to a free PDF, as well as prepublication of an unedited version of the manuscript.

    Cell Transplantation is now being published by SAGE. Please visit their website for the most recent issues.

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