【摘要】 目的采用血管内皮生长因子(VEGF)基因修饰骨髓间充质干细胞(BMSC),观察其是否能改善放射治疗损伤区组织的生长情况。方法以60Coγ射线照射大鼠右后肢,在照射结束后第1天,将VEGF165基因修饰的BMSC注射至照射区肌肉组织细胞,共注射2次,间隔2周,治疗结束后行检测VEGF165mRNA、VEGF蛋白含量,并观察其血管神经的显微结构。结果注射VEGF165基因修饰的BMSC治疗后,照射区组织中的VEGF165mRNA及VEGF蛋白的表达均明显增高,血管、神经超微结构基本恢复正常。结论 VEGF165基因修饰的BMSC能有效修复肌肉组织的放射损伤,为临床治疗提供了一定的实验基础。更多还原

【Abstract】 Objective This study aimed to resume the ability of revascularization of the irradiated tissue by implantation of vascular endothelial growth factor(VEGF)-modifi ed bone mesenchymal stromal cell(BMSC).Methods Each mouse was irradiated with 60Coγ ray on their right leg.The irradiated muscular tissues of the animal models were injected with VEGF 165-modifi ed BMSCs,and a second dose was administered after two weeks.We determined the expression of VEGF 165 mRNA,VEGF 165 protein,and ultrastructure of the vessels and nerves after gene therapy.Results VEGF 165 mRNA and VEGF 165 protein had high levels of expression in the irradiated tissue after the injection of VEGF 165-modifi ed BMSCs.The confi guration and ultrastructure of the vessels and nerves returned to normal.Conclusion VEGF 165-modifi ed BMSCs can resume the ability of the vessels and nerves of an irradiated tissue.This study provides abasis for the clinical application of VEGF 165-modifi ed BMSCs.更多还原