脑源性神经营养因子基因修饰骨髓基质细胞对体外培养小鼠螺旋神经元的影响

Construction of Human Brain-Derived Neurotrophic Factor Genetical Modified Marrow Stromal Cells and Its Influence on the Cultured Spiral Ganglion Cells of Mice

朱纲华;葛圣雷;谢鼎华;

1:中南大学湘雅二医院耳鼻咽喉头颈外科中南大学听力研究所

2:中南大学湘雅二医院耳鼻咽喉头颈外科中南大学听力研究所

3:中南大学湘雅二医院耳鼻咽喉头颈外科中南大学听力研究所 长沙410011

4:长沙410011

摘要
目的探讨人脑源性神经营养因子(brain-derived neurotrophic factor,BDNF)基因工程细胞的建立及其对体外培养的小鼠螺旋神经元生长活性的影响。方法参照分子克隆技术成功构建BDNF真核表达载体———pcD-NA3.1(-)-BDNF,体外证实BDNF基因转染猿猴病毒40肝脏转化细胞(COS7)后正常表达,将骨髓基质细胞分离培养,体外转染骨髓基质细胞建立BDNF基因工程细胞,观察该基因工程细胞对体外培养小鼠螺旋神经元的生长活性的影响。结果成功构建BDNF基因真核表达载体,并且建立了BDNF基因工程细胞;在体外BDNF基因工程细胞能促进螺旋神经元的生长,并保护螺旋神经元免受氧化损伤。结论建立的BDNF基因修饰的骨髓基质细胞,对体外螺旋神经元生长、生存起着重要的保护作用,为进一步研究基因修饰的骨髓基质细胞内耳移植奠定了重要的基础。
关键词
基因工程细胞;骨髓基质干细胞;脑源性神经营养因子;螺旋神经元
基金项目(Foundation):
国家自然科学基金资助(编号30070807)
作者
朱纲华;葛圣雷;谢鼎华;
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