| 重组人胶质细胞源性神经营养因子的生物学活性研究 |
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| 引用本文： | 王金惠,王嘉玺,丁爱石,刘红.重组人胶质细胞源性神经营养因子的生物学活性研究[J].生物化学与生物物理进展,2001,28(4):502-506. |
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| 作者姓名： | 王金惠 王嘉玺 丁爱石 刘红 |
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| 作者单位： | 军事医学科学院基础医学研究所, |
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| 摘 要： | 从人星形胶质细胞瘤BT-325细胞中克隆胶质细胞源性神经营养因子(GDNF) cDNA序列.以大肠杆菌作为表达系统，GDNF蛋白在大肠杆菌JM103中获得了高效表达；表达产物经纯化、复性后，以8日龄鸡胚背根节（DRG）、14日龄胎鼠脊髓前角运动神经元以及新生大鼠大脑皮层胶质细胞作为实验材料，研究了GDNF的生物学活性，结果表明： rhGDNF可有效地促进DRG突起的生长，rhGDNF对体外培养的运动神经元表现出明显的促突起生长作用，并可显著提高体外培养运动神经元的存活率，rhGDNF 对体外培养的胶质细胞具有促增殖作用.
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| 关 键 词： | 胶质细胞源性神经营养因子(GDNF)，高效表达，运动神经元，胶质细胞，生物学活性 |
| 收稿时间： | 2000/12/28 0:00:00 |
| 修稿时间： | 2000年12月28 |
Study on the Biological Activity of Recombinant Human Glial Cell-derived Neurotrophic Factor |
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| WANG Jin-Hui,WANG Jia-Xi,DING Ai-Shi and LIU Hong.Study on the Biological Activity of Recombinant Human Glial Cell-derived Neurotrophic Factor[J].Progress In Biochemistry and Biophysics,2001,28(4):502-506. |
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| Authors: | WANG Jin-Hui WANG Jia-Xi DING Ai-Shi and LIU Hong |
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| Institution: | Institute of Basic Medical Sciences, Beijng 100850, China;Institute of Basic Medical Sciences, Beijng 100850, China;Institute of Basic Medical Sciences, Beijng 100850, China;Institute of Basic Medical Sciences, Beijng 100850, China |
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| Abstract: | The cDNA encoding glial cell-derived neurotrophic factor (GDNF) was isolated from the human astrocytoma cell BT-325. GDNF was efficiently expressed in E.coli. The recombinant protein was purified. The renaturation occurred in the presence of sodium tetrathionate system. In order to study the biological activity of the recombinant protein, the effects of rhGDNF on the dorsal root ganglion (DRG) of chicken embryo (8 d), motor neurons of rat embryo (14 d) spinal cord and glial cell were explored. The results show that rhGDNF promotes the growth of neurite of DRG, increases the number of survival motor neurons cultured for 3 d, 7 d, 14 d and 21 d, respectively, and promotes glial cell proliferation. |
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| Keywords: | glial cell derived neurotrophic factor(GDNF) highly expression motor neuron glial cell biological activity |
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