Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (23): 3729-3735.doi: 10.3969/j.issn.2095-4344.2015.23.021

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Effects of umbilical cord Wharton’s jelly mesenchymal stem cell transplantation on the expression of inflammatory factors in rats with spinal cord injury 

Ma Shan-shan1, Qu Rui-na1, Tian Yi2, Yao Ning1, Cui Yuan-bo1, Han Kang1, Xing Qu1, Yang Bo2, Guan Fang-xia1, 2   

  1. 1School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China; 
    2Department of Neurosurgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • Online:2015-06-04 Published:2015-06-04
  • Contact: Guan Fang-xia, Professor, Doctoral supervisor, School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China; Department of Neurosurgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • About author:Ma Shan-shan, M.D., Associate professor, School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81171177; U1404313; a grant from Science & Technology Innovation Foundation for Higher Education Institutes of Henan Province of China, No. 15IRTSTHN022

Abstract:

BACKGROUND: The production and release of a large amount of inflammatory factors caused by immune system inflammatory response mainly contributes to secondary spinal cord injury.
OBJECTIVE: To investigate the effects of umbilical cord Wharton’s jelly mesenchymal stem cell transplantation on repair of injured neurological function and expression of inflammatory factors monocyte chemoattractant protein 1 and interleukin 10 in rats with acute spinal cord injury.
METHODS: Eighty-one healthy adult male Sprague-Dawley rats were randomly and equally divided into sham operation, model and cell transplantation groups, with 27 rats per group. Rats in the latter two groups were subjected to hemisection of the spinal cord to establish acute spinal cord injury models. Rat models in the cell 
transplantation group received umbilical cord Wharton’s jelly mesenchymal stem cell injection (1×106) via the tail vein. Rat neurological function was evaluated using the BBB score at different time points after spinal cord injury. The expression of monocyte chemoattractant protein 1 and interleukin 10 in injured spinal cord tissue was detected using ELISA assay at different time points after spinal cord injury. Migration and neuronal differentiation of umbilical cord Wharton’s jelly mesenchymal stem cells in the injured spinal cord tissue were determined using immunohistochemical staining method.
RESULTS AND CONCLUSION: Compared with the sham operation and model groups, rat neurological function was significantly recovered in the cell transplantation group (P < 0.05). Compared to the model group, monocyte chemoattractant protein 1 level in the serum and monocyte chemoattractant protein 1 mRNA and protein expression in the injured spinal cord tissue were significantly lower (P < 0.05), but interleukin 10 mRNA and protein expression in the injured spinal cord tissue was significantly higher (P < 0.05), in the cell transplantation group. In the cell transplantation group, umbilical cord Wharton’s jelly mesenchymal stem cells could migrate to the injured region and express glial fibrillary acidic protein. These findings suggest that umbilical cord Wharton’s jelly mesenchymal stem cells promote rat neurological function recovery by regulating the inflammatory response in the injured spinal cord tissue, which is likely to be one of mechanisms by which transplantation of umbilical cord Wharton’s jelly mesenchymal stem cells treats spinal cord injury.

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

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