不同来源间质干细胞移植治疗大鼠肝纤维化  

Different sources of mesenchymal stem cells in the treatment of liver fibrosis in rats

作　　者：曲鑫[1] 王新超[1] 韩璐[1] 张海超[1] 

机构地区：[1]天津市第四中心医院普外科,天津市300052

出　　处：《中国组织工程研究》2014年第6期926-931,共6页Chinese Journal of Tissue Engineering Research

摘　　要：背景:近年来研究表明间充质干细胞可分泌多种生长因子,在肝纤维化的治疗方面有一定的应用前景。目的:探讨不同来源的间充质干细胞对大鼠肝纤维化的治疗作用。方法:四氯化碳腹腔注射构建SD大鼠肝纤维化模型50只,另取10只正常SD大鼠作为正常对照组,将SD模型大鼠随机分为5组,每组10只,根据移植不同来源的间质干细胞命名为模型对照组、生理盐水组、骨髓间充质干细胞组、脐带间充质干细胞组、脐血间充质干细胞组。分离不同来源的间充质干细胞,造模8周后,取不同来源的间质干细胞2×106经尾静脉输注至SD大鼠模型体内,12周后处死各组大鼠,检测血清谷丙转氨酶、谷草转氨酶和白蛋白水平,荧光定量PCR法检测肝组织中Ⅰ型胶原和胶质纤维酸性蛋白的表达。结果与结论:成功建立了SD大鼠肝纤维化模型,骨髓间充质干细胞加重纤维化水平,脐血间充质干细胞与脐带间充质干细胞能降低大鼠的肝纤维化水平,脐带间充质干细胞的作用最明显,能明显降低谷丙转氨酶、谷草转氨酶及Ⅰ型胶原和胶质纤维酸性蛋白的表达。结果可见不同来源的间质干细胞对于大鼠纤维化具有不同的作用,骨髓间充质干细胞促进肝纤维化,脐带和脐血间充质干细胞能缓解大鼠的肝纤维化。BACKGROUND：In recent years, studies have shown that mesenchymal stem cells can secrete various growth factors, and has certain application prospect in the treatment of liver fibrosis. OBJECTIVE：To explore the different sources of mesenchymal stem cells in the treatment of liver fibrosis in rats. METHODS：Fifty Sprague-Dawley rats were given intraperitoneal injection of carbon tetrachloride to construct the model of liver fibrosis. Another 10 normal Sprague-Dawley rats were used as normal controls. Model rats were randomly divided into five groups, 10 rats in each group, including model control group, normal saline group, bone marrow mesenchymal stem cellgroup, umbilical cord mesenchymal stem cellgroup, and umbilical cord blood mesenchymal stem cellgroup. After 8 weeks of modeling, different sources of mesenchymal stem cells at a density of 2＆#215;106 were injected via tail vein into model rats. After 12 weeks, the rats were kil ed, and serum alanine aminotransferase, aspartate aminotransferase and albumin levels were detected as wel as the expression of type I col agen and glial fibril ary acidic protein in liver tissue was detected by fluorescence quantitative PCR method. RESULTS AND CONCLUSION：We have successful y established the SD rat model of hepatic fibrosis. Bone marrow mesenchymal stem cells aggravated hepatic fibrosis, umbilical cord blood and umbilical cord mesenchymal stem cells could reduce the level of hepatic fibrosis in rats. Umbilical cord mesenchymal stem cells had the most obvious effect that significantly reduced expressions of alanine aminotransferase, aspartate aminotransferase and type I col agen and glial fibril ary acidic protein. The results showed different sources of mesenchymal stem cells have different effects on rat fibrosis. Bone marrow mesenchymal stem cells aggravate hepatic fibrosis, and umbilical cord and umbilical cord blood stem cells can al eviate hepatic fibrosis in rats.

关 键 词：干细胞 移植 间质干细胞 骨髓 脐带 脐血 大鼠纤维化 

分 类 号：R394.2[医药卫生—医学遗传学]