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14 April 2017 : Animal Research

Glial Cell Line-Derived Neurotrophic Factor-Transfected Placenta-Derived Versus Bone Marrow-Derived Mesenchymal Cells for Treating Spinal Cord Injury

Yao Lu1AB*, Hui Gao2AE, Man Zhang2B, Bing Chen3B, Huilin Yang1A

DOI: 10.12659/MSM.902754

Med Sci Monit 2017; 23:1800-1811

Abstract

BACKGROUND: Placenta-derived mesenchymal stem cells (PMSCs) were isolated from placenta and had differentiation and self-renewal potential. We transfected PMSCs with glial cell line-derived neurotrophic factor (GDNF) and compared their effect for repairing spinal cord injury (SCI) with that of GDNF-transfected bone marrow-derived mesenchymal stem cell (BMSC).

MATERIAL AND METHODS: The PMSCs were isolated from Sprague-Dawley rat placenta; BMSCs were isolated from Sprague-Dawley rat thigh bone marrow. Primary cultured BMSCs and PMSCs were uniformly spindle-shaped. Flow cytometry indicated that both cell types were CD29- and CD90-positive and CD34- and CD45-negative, confirming that they were MSCs. The PMSCs and BMSCs were transfected with recombinant lentivirus containing the GDNF gene in vitro. PMSC and BMSC viability was increased after transfection, and GDNF expression was increased until 10 d after transfection. SCI was created in the rats (n=64) and was repaired using transfected PMSCs and BMSCs or untransfected PMSCs and BMSCs.

RESULTS: The transfected PMSCs and BMSCs repaired the SCI. Flow cytometry, histology, immunohistochemical, kinesiology properties, and Basso-Beattie-Bresnahan locomotion score measurements determined no significant difference between transfected PMSCs and BMSCs at 7, 14, and 21 d post-transplantation (P>0.05); the injury healed better in transfected PMSCs and BMSCs than in untransfected PMSCs and BMSCs (P<0.05).

CONCLUSIONS: MSCs have similar biology characteristics and capacity for SCI repair to BMSCs and can be used as a new resource for treating SCI.

Keywords: Bone Marrow, mesenchymal stromal cells, Spinal Cord Injuries

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750