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Olig2-expressing Mesenchymal Stem Cells Enhance Functional Recovery after Contusive Spinal Cord Injury

Authors
 Hwan-Woo Park  ;  Soonyi Oh  ;  Kyung Hee Lee  ;  Bae Hwan Lee  ;  Mi-Sook Chang 
Citation
 INTERNATIONAL JOURNAL OF STEM CELLS, Vol.11(2) : 177-186, 2018 
Journal Title
 INTERNATIONAL JOURNAL OF STEM CELLS 
ISSN
 2005-3606 
Issue Date
2018
Keywords
Mesenchymal stem cells ; Olig2 ; Spinal cord injury ; Transplantation
Abstract
Background and Objectives: Glial scarring and inflammation after spinal cord injury (SCI) interfere with neural regeneration and functional recovery due to the inhibitory microenvironment of the injured spinal cord. Stem cell transplantation can improve functional recovery in experimental models of SCI, but many obstacles to clinical application remain due to concerns regarding the effectiveness and safety of stem cell transplantation for SCI patients. In this study, we investigated the effects of transplantation of human mesenchymal stem cells (hMSCs) that were genetically modified to express Olig2 in a rat model of SCI. Methods: Bone marrow-derived hMSCs were genetically modified to express Olig2 and transplanted one week after the induction of contusive SCI in a rat model. Spinal cords were harvested 7 weeks after transplantation. Results: Transplantation of Olig2-expressing hMSCs significantly improved functional recovery in a rat model of contusive SCI model compared to the control hMSC-transplanted group. Transplantation of Olig2-expressing hMSCs also attenuated glial scar formation in spinal cord lesions. Immunohistochemical analysis showed that transplanted Olig2-expressing hMSCs were partially differentiated into Olig1-positive oligodendrocyte-like cells in spinal cords. Furthermore, NF-M-positive axons were more abundant in the Olig2-expressing hMSC-transplanted group than in the control hMSC-transplanted group. Conclusions: We suggest that Olig2-expressing hMSCs are a safe and optimal cell source for treating SCI.
Files in This Item:
T201806190.pdf Download
DOI
10.15283/ijsc18071
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Physiology (생리학교실) > 1. Journal Papers
Yonsei Authors
Lee, Bae Hwan(이배환) ORCID logo https://orcid.org/0000-0003-4719-9021
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/172981
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