Umbilical cord blood mesenchymal stem cells traced and transfected by recombinant lentivirus vector with enhanced green fluorescent protein for treatment of ischemic necrosis of the femoral head in rabbits*
10.3969/j.issn.1673-8225.2011.10.042
- VernacularTitle:重组增强型绿色荧光蛋白慢病毒载体示踪转染的脐血间充质干细胞移植治疗兔股骨头缺血性坏死
- Author:
Taotao LI
;
Xiangda WANG
;
Shaoqi TIAN
;
Kang SUN
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2011;15(10):1897-1900
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND: At present, studies concerning human umbilical cord blood mesenchymal stem cells (UCB-MSCs) transplantation for repair of rat spinal cord injury, brain tumor, and myocardial infarction have been reported, and studies that human UCB-MSCs were induced differentiation into osteogenic cells under certain conditions have also been reported at home and abroad. But application of UCB-MSCs transplantation in the treatment of osteonecrosis of animals has not yet been reported. OBJECTIVE: To observe the repair results of recombinant lentivirus vector tracing enhanced green fluorescent protein (EGFP)-transfected UCB-MSCs transplantation in treatment of ischemic necrosis of the femoral head in rabbits. METHODS: Bone morphogenetic protein-2 gene plasmid, recombinant lentivirus vector carrying EGFP and UCB-MSCs were co-cultured. Rabbit models of femoral head defects were made and randomly divided into 3 groups. There was no treatment in the normal group, control group with bone defects and experimental bone defects filled with UCB-MSCs tracing transfected by recombinant lentivirus vector carrying EGFP. At 4 and 8 weeks after treatment, the imaging and histological of the femoral head were observed.RESULTS AND CONCLUSION: Imaging and histology results showed that there were osteogenic response and new bone formation in the experimental group at 4 weeks, and the bone defects were basically repaired at 8 weeks after treatment. In the control group, the bone defects filled with fibrous connective tissue fiber connective tissues at 4 weeks, and the osteosclerosis could be found surrounding femoral head, bone defects filled with fibrous connective tissue fibers and bone trabecula distributed disorderly. The recombinant lentivirus vector tracing EGFP-transfected into UCB-MSCs has strong effects bone conduction and can repair ischemic necrosis of the femoral head.
