[1]王宝英,胡成虎,俞小瑞.骨髓间充质干细胞(MSCs)对N-甲基-N-亚硝脲(MNU)诱导的C57BL小鼠视网膜变性的治疗作用[J].眼科新进展,2017,37(9):810-815.[doi:10.13389/j.cnki.rao.2017.0205]
 WANG Bao-Ying,HU Cheng-Hu,YU Xiao-Rui.Therapeutic effects of mesenchymal stem cells (MSCs) on N-methyl-N-nitrosourea (MNU)-induced retinitis pigmentosa in C57BL mice[J].Recent Advances in Ophthalmology,2017,37(9):810-815.[doi:10.13389/j.cnki.rao.2017.0205]
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骨髓间充质干细胞(MSCs)对N-甲基-N-亚硝脲(MNU)诱导的C57BL小鼠视网膜变性的治疗作用/HTML
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《眼科新进展》[ISSN:1003-5141/CN:41-1105/R]

卷:
37卷
期数:
2017年9期
页码:
810-815
栏目:
实验研究
出版日期:
2017-09-05

文章信息/Info

Title:
Therapeutic effects of mesenchymal stem cells (MSCs) on N-methyl-N-nitrosourea (MNU)-induced retinitis pigmentosa in C57BL mice
作者:
王宝英胡成虎俞小瑞
710061 陕西省西安市,西安交通大学医学部基础医学院生物化学与分子生物学系(王宝英,胡成虎,俞小瑞);710032 陕西省西安市,西安组织工程与再生医学研究所(胡成虎);710061 陕西省西安市,西安交通大学教育部环境与疾病相关重点实验室(俞小瑞)
Author(s):
WANG Bao-YingHU Cheng-HuYU Xiao-Rui
Department of Biochemistry and Molecular Biology,Health Science Center,Xi’an Jiaotong University(WANG Bao-Ying,HU Cheng-Hu,YU Xiao-Rui),Xi’an 710061,Shaanxi Province,China;Xi’an Institute of Tissue Engineering & Regenerative Medicine(HU Cheng-Hu),710032 Xi’an,Shaanxi Province,China;Environment and Genes Related to Diseases Key Laboratory of Education Ministry,Xi’an Jiaotong University(YU Xiao-Rui),Xi’an 710061,Shaanxi Province,China
关键词:
骨髓间充质干细胞N-甲基-N-亚硝脲视网膜色素变性小鼠
Keywords:
mesenchymal stem cellsN-methyl-N-nitrosourearetinitis pigmentosamice
分类号:
R774
DOI:
10.13389/j.cnki.rao.2017.0205
文献标志码:
A
摘要:
目的 观察骨髓间充质干细胞(mesenchymal stem cells,MSCs)对N-甲基-N-亚硝脲(N-methyl-N-nitrosourea,MNU)诱导的C57BL小鼠视网膜色素变性(retinitis pigmentosa,RP)的治疗作用。方法 应用不同剂量(30 mg·kg-1、45 mg·kg-1、60 mg·kg-1、75 mg·kg-1、90 mg·kg-1)的MNU腹腔注射给予C57BL小鼠和MNU作用不同时间(1 d、3 d、7 d)后,通过视网膜电图(electroretinogram,ERG)和HE染色检测小鼠视网膜的电生理功能和组织形态变化,优化建立稳定的RP动物模型的最佳条件;在此动物模型的基础上,经玻璃体内注射和尾静脉注射给予MSCs移植,并应用ERG和HE染色评估MSCs对MNU诱导的RP的治疗作用。结果 与对照组相比,30 mg·kg-1、45 mg·kg-1剂量的MNU可引起视网膜形态和功能的轻微损伤,而60 mg·kg-1及其以上剂量的MNU可使视网膜ERG波幅明显降低(均为P<0.001),视网膜外核层(outer nuclear layer,ONL)厚度明显变薄(P<0.001),损伤严重;与对照组相比,60 mg·kg-1的MNU作用后1 d和3 d,视网膜ERG波形开始降低,形态结构开始出现ONL厚度变薄的损伤,作用7 d时,ERG波形呈现熄灭型(均为P<0.001),ONL厚度明显变薄(P<0.001),内外核层融合,损伤严重。与MNU单独作用组相比,60 mg·kg-1 MNU作用1 d后给予MSCs移植,7 d后MSCs组内ONL厚度增加(P<0.001),视网膜ERG波形趋于恢复(均为P<0.001)。结论 MSCs移植对MNU诱导的视网膜退行性变有一定的治疗作用。
Abstract:
Objective To investigate the therapeutic effects of mesenchymal stem cells (MSCs) on N-methyl-N-nitrosourea (MNU)-induced retinal degeneration in C57BL mice.Methods Different doses of MNU (30 mg·kg-1,45 mg·kg-1,60 mg·kg-1,75 mg·kg-1 and 90 mg·kg-1) were injected to C57BL mice for 7 days.Then electroretinogram (ERG) detection and HE staining were performed to examine retinal electrophysiological function and morphological changes on day 1,day 3 and day 7 after MNU treatment,respectively.Then we could explore the optimum condition to establish stable animal model of retinitis pigmentosa.MSCs were transplanted to C57BL mice by intravitreal or tail intravenous injection.Then ERG detection and HE staining were performed to evaluate the effect of MSCs on retinitis pigmentosa induced by MNU.Results When compared with control group,30 mg·kg-1 and 45 mg·kg-1 MNU could cause mild retinal damage in morphology and function in mice;while 60 mg·kg-1 and above dose of MNU induced serious retinal damage,leading to decreased ERG amplitude of the retina (all P<0.001) and outer nuclear layer (ONL) thickness (all P<0.001).On day 1 and day 3 after single dose of 60 mg·kg-1 MNU injection,ERG amplitude of the retina was decreased,and outer nuclear layer thickness became thin;while the retinal damage was serious badly in morphological structure on day 7,with the ERG amplitude extinguished (all P<0.001), ONL thickness thin (all P<0.001) and internal and external nuclear layer fusion.When compared with MNU alone treatment group,following injection of 60 mg·kg-1 MNU for 1 day MSCs were transplanted to C57BL mice by intravitreal or tail intravenous injection,and the amplitude of ERG and retinal ONL thickness were increased on day 7 after MSCs transplantation (all P<0.001).Conclusion MSCs transplantation has a certain therapeutic effect on MNU-induced retinitis pigmentosa in C57BL mice.

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备注/Memo

备注/Memo:
国家自然科学基金资助(编号:81271013);教育部高等学校博士点专项科研基金资助(编号:20120201110051)
更新日期/Last Update: 2017-10-12