轉染攜帶BMP2腺病毒的鼠肌母細胞異位成骨能力的實驗研究
[Abstract]:Background and objective: 5% to 10% of fracture patients have delayed healing or poor healing. These nonunion fractures usually occur in patients with talus and scaphoid fractures, infections, violent injuries, and osteoporosis. For such fractures, autografts, vascularized bone grafts and allogeneic bone grafts with bone protein are commonly used. Usually, the recovery is poor, and the donor area often has complications such as infection and bone defect. The purpose of this study is to seek a cell vector with high ability to express BMP2, easy to draw materials and less trauma to the body, and to use it in clinical practice to find an alternative. And effective minimally invasive gene therapy to promote the above-mentioned nonunion or delayed healing recovery. Methods 80 C3H mice were divided into 4 groups: the grafts were injected into the gastrocnemius muscle abdomen of the mice according to the request of grouping, and the myoblast cells transfected with Ad-BMP2 (group A). Ad-LacZ transfected myoblast group (group B), blank myoblast group (group C) and equal dose of Ad-BMP2 group (group D). The histological changes in the injection area of each group and the radiologic manifestations in the model of each group were observed every week (3 times in succession). Results (1) indirect immunofluorescence: BMP-2 positive cells were more common in Ad-BMP2 transfected myoblasts, but no BMP-2 positive cells were observed in untransfected cells. (2) ALP activity: the ALP activity of blank myoblasts and Ad-LacZ transfected myoblasts was very low. (3) the imaging manifestations of fracture healing in the four groups: only a clear ectopic osteogenic focus appeared in the model of group A mice. Conclusion (1) the constructed Ad-BMP2 adenovirus can efficiently transfect the murine myoblasts, and the transfected myoblasts can continuously secrete the effective BMP2. (2) the myoblast incubating method used in this experiment can be cultured rapidly. (3) murine myoblast transfected with Ad-BMP2 had ectopic osteogenic ability.
【學位授予單位】:同濟大學
【學位級別】:碩士
【學位授予年份】:2007
【分類號】:R683;R346
【共引文獻】
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