Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (1): 101-107.doi: 10.3969/j.issn.2095-4344.2150

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Two kinds of stem cell nasal transplantation for treating white matter injury in premature rat infants

Zang Jing1, Luan Zuo2, Wang Qian2, Yang Yinxiang2, Wang Zhaoyan2, Wu Youjia3, Guo Aisong4   

  1. Hospital, Beijing 100048, China; 3Department of Pediatrics, 4Department of Traditional Chinese Medicine, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
  • Received:2020-02-10 Revised:2020-02-19 Accepted:2020-03-30 Online:2021-01-08 Published:2020-11-19
  • Contact: Guo Aisong, MD, Chief physician, Department of Traditional Chinese Medicine, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
  • About author:Zang Jing, Master, Medical School of Nantong University, Nantong 226001, Jiangsu Province, China Luan Zuo, Postgraduate, Chief physician, Department of Pediatrics, The Sixth Medical Center of Chinese PLA General Hospital, Beijing 100048, China
  • Supported by:
     the National Key Research & Development Plan, No. 2017YFA0104200

Abstract: BACKGROUND: Stem cell transplantation has a significant neuroprotective effect on neurological diseases. Current transplantation methods such as arteriovenous transplantation and brain stereotactic transplantation are not suitable for clinical application in preterm infants.
OBJECTIVE: To explore the feasibility of nasal transplantation of human umbilical cord mesenchymal stem cells and human neural stem cells for the treatment of white matter injury in premature rat infants.
METHODS: Human umbilical cord mesenchymal stem cells were prepared from human umbilical cord tissue, and human neural stem cells were prepared from human embryonic brain tissue. In vitro migration of two kinds of cells was assessed by Transwell method. Forty 3-day-old Sprague-Dawley rats were randomly divided into sham operation group, model control group, human umbilical cord mesenchymal stem cell transplantation group and human neural stem cell transplantation group, with 10 rats in each group. Rats in all groups except the sham operation group were treated with right common carotid artery ligation and hypoxia for 90 minutes to establish a rat model of white matter injury in the preterm infant. Totally 1×106 cells were delivered intranasally in the transplantation group at 3 days after injury. Each nostril was infused with 5×105, and each nostril was infused once. On day 7 after injury, MBP immunofluorescence staining was used to detect the expression of myelin basic protein in the white matter of the brain to identify the damage of the white matter injury model. At 24 hours after transplantation, human umbilical cord mesenchymal stem cell migration was detected by anti-HuNu immunohistochemical method and human neural stem cell migration was detected by CM-Dil fluorescent labeling method. 
RESULTS AND CONCLUSION: (1) On day 7 after modeling, compared with the normal side, the positive area of MBP decreased in cingulate band, corpus callosum and external capsule of the affected side in the model of brain white matter injury in preterm infants (P < 0.05), indicating a successful modeling. (2) In vitro experiments showed that the migration rate of human neural stem cells was the same as that of human umbilical cord mesenchymal stem cells. (3) At 24 hours after the nasal transplantation, human umbilical cord mesenchymal stem cells migrated to the cortex, corpus callosum and hippocampus on the normal side and the damaged side, and human neural stem cells migrated to the damaged cortex, corpus callosum and hippocampus, and human umbilical cord mesenchymal stem cells migrated more than human neural stem cells. (4) Overall, these findings indicate that 24 hours after the nasal transplantation, human umbilical cord mesenchymal stem cells could survive and migrate to the normal side and the injury side, and human neural stem cells could survive and migrate to the injury side; and the migration of human umbilical cord mesenchymal stem cells was more extensive than that of human neural stem cells.

Key words: stem cells, transplantation, human umbilical cord mesenchymal stem cells, human neural stem cells, intranasal, premature infants, white matter injury, rats

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