Overexpression of microRNA-124 promotes the neuronal differentiation of bone marrow-derived mesenchymal stem cells

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	Overexpression of microRNA-124 promotes the neuronal differentiation of bone marrow-derived mesenchymal stem cells
其他题名	Overexpression of microRNA-124 promotes the neuronal differentiation of bone marrow-derived mesenchymal stem cells
	Zou Defeng 1; Chen Yi 2; Han Yaxin 1; Lv Chen 1; Tu Guanjun 1
	2014
发表期刊	NEURAL REGENERATION RESEARCH
ISSN	1673-5374
卷号	9 期号:12 页码:1241-1248
摘要	microRNAs (miRNAs) play an important regulatory role in the self-renewal and differentiation of stem cells. In this study, we examined the effects of miRNA-124 (miR-124) overexpression in bone marrow-derived mesenchymal stem cells. In particular, we focused on the effect of overexpression on the differentiation of bone marrow-derived mesenchymal stem cells into neurons. First, we used GeneChip technology to analyze the expression of miRNAs in bone marrow-derived mesenchymal stem cells, neural stem cells and neurons. miR-124 expression was substantially reduced in bone marrow-derived mesenchymal stem cells compared with the other cell types. We constructed a lentiviral vector overexpressing miR-124 and transfected it into bone marrow-derived mesenchymal stem cells. Intracellular expression levels of the neuronal early markers beta-III tubulin and microtubule-associated protein-2 were significantly increased, and apoptosis induced by oxygen and glucose deprivation was reduced in transfected cells. After miR-124-transfected bone marrow-derived mesenchymal stem cells were transplanted into the injured rat spinal cord, a large number of cells positive for the neuronal marker neurofilament-200 were observed in the transplanted region. The Basso-Beattie-Bresnahan locomotion scores showed that the motor function of the hind limb of rats with spinal cord injury was substantially improved. These results suggest that miR-124 plays an important role in the differentiation of bone marrow-derived mesenchymal stem cells into neurons. Our findings should facilitate the development of novel strategies for enhancing the therapeutic efficacy of bone marrow-derived mesenchymal stem cell transplantation for spinal cord injury.
其他摘要	microRNAs (miRNAs) play an important regulatory role in the self-renewal and differentiation of stem cells. In this study, we examined the effects of miRNA-124 (miR-124) overexpression in bone marrow-derived mesenchymal stem cells. In particular, we focused on the effect of overexpression on the differentiation of bone marrow-derived mesenchymal stem cells into neurons. First, we used GeneChip technology to analyze the expression of miRNAs in bone marrow-derived mesenchymal stem cells, neural stem cells and neurons. miR-124 expression was substantially reduced in bone marrow-derived mesenchymal stem cells compared with the other cell types. We constructed a lentiviral vector overexpressing miR-124 and transfected it into bone marrow-derived mesenchymal stem cells. Intracellular expression levels of the neuronal early markers β-III tubulin and microtubule-associated protein-2 were significantly increased, and apoptosis induced by oxygen and glucose deprivation was reduced in transfected cells. After miR-124-transfected bone marrow-derived mesenchymal stem cells were transplanted into the injured rat spinal cord, a large number of cells positive for the neuronal marker neurofilament-200 were observed in the transplanted region. The Basso-Beattie-Bresnahan locomotion scores showed that the motor function of the hind limb of rats with spinal cord injury was substantially improved. These results suggest that miR-124 plays an important role in the differentiation of bone marrow-derived mesenchymal stem cells into neurons. Our findings should facilitate the development of novel strategies for enhancing the therapeutic efficacy of bone marrow-derived mesenchymal stem cell transplantation for spinal cord injury.
关键词	SPINAL-CORD-INJURY NERVOUS-SYSTEM MIR-124 FATE NEUROGENESIS EXPRESSION REGULATORS PROTECTS COREST REST nerve regeneration microRNA-124 lentivirus overexpression bone marrow-derived mesenchymal stem cells neural stem cells spinal cord injury neurogenesis GeneChip motor function NSFC grant neural regeneration
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:5185878
引用统计	被引频次：1[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141749
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.浙江大学
推荐引用方式 GB/T 7714	Zou Defeng,Chen Yi,Han Yaxin,et al. Overexpression of microRNA-124 promotes the neuronal differentiation of bone marrow-derived mesenchymal stem cells[J]. NEURAL REGENERATION RESEARCH,2014,9(12):1241-1248.
APA	Zou Defeng,Chen Yi,Han Yaxin,Lv Chen,&Tu Guanjun.(2014).Overexpression of microRNA-124 promotes the neuronal differentiation of bone marrow-derived mesenchymal stem cells.NEURAL REGENERATION RESEARCH,9(12),1241-1248.
MLA	Zou Defeng,et al."Overexpression of microRNA-124 promotes the neuronal differentiation of bone marrow-derived mesenchymal stem cells".NEURAL REGENERATION RESEARCH 9.12(2014):1241-1248.