Bone mesenchymal stromal cells stimulate neurite outgrowth of spinal neurons by secreting neurotrophic factors

被引：24
作者：
Gu, Weidong [1 ,2 ]
Zhang, Fujun [1 ]
Xue, Qingsheng [1 ]
Ma, Zhengwen [3 ]
Lu, Peihua [3 ]
Yu, Buwei [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Anesthesiol, Ruijin Hosp, Sch Med, Shanghai 200025, Peoples R China
[2] Shanghai Minhang Cent Hosp, Dept Anesthesiol, Shanghai, Peoples R China
[3] Shanghai Jiao Tong Univ, Dept Neurobiol, Sch Med, Shanghai 200025, Peoples R China
来源：
NEUROLOGICAL RESEARCH | 2012年 / 34卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Bone mesenchymal stromal cell; Neurite; Spinal neuron; Brain-derived neurotrophic factor; Glial cell line-derived neurotrophic factor; STEM-CELLS; CORD-INJURY; FUNCTIONAL RECOVERY; AXONAL GROWTH; MARROW; TRANSPLANTATION; STROKE; BDNF; RAT; MOLECULES;
D O I：
10.1179/1743132811Y.0000000068
中图分类号：
R74 [神经病学与精神病学];
学科分类号：
摘要：
It has been demonstrated that bone mesenchymal stromal cells (BMSCs) stimulate neurite outgrowth from dorsal root ganglion (DRG) neurons. The present in vitro study tested the hypothesis that BMSCs stimulate the neurite outgrowth from spinal neurons by secreting neurotrophic factors. Spinal neurons were cocultured with BMSCs, fibroblasts and control medium in a non-contact system. Neurite outgrowth of spinal neurons cocultured with BMSCs was significantly greater than the neurite outgrowth observed in neurons cultured with control medium or with fibroblasts. In addition, BMSC-conditioned medium increased the length of neurites from spinal neurons compared to those of neurons cultured in the control medium or in the fibroblasts-conditioned medium. BMSCs expressed brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF). The concentrations of BDNF and GDNF in BMSC-conditioned medium were 132+/-12 and 70+/-6 pg ml(-1), respectively. The addition of anti-BDNF and anti-GDNF antibodies to BMSC-conditioned medium partially blocked the neurite-promoting effect of the BMSC-conditioned medium. In conclusion, our results demonstrate that BMSCs promote neurite outgrowth in spinal neurons by secreting soluble factors. The neurite-promoting effect of BMSCs is partially mediated by BDNF and GDNF.
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页码：172 / 180
页数：9
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