高龄小鼠沉默信息调节因子1基因敲除后膝骨关节炎模型的建立

被引:28
作者
于斐
雷鸣
曾晖
李明华
肖德明
机构
[1] 北京大学深圳医院
关键词
模型,动物; 骨关节炎,膝; 小鼠,基因敲除; 前交叉韧带; 组织工程; 实验动物模型; 骨及关节损伤动物模型; 高龄; SIRT1; 基因敲除; 膝骨关节炎; 半月板; Mankin评分; 国家自然科学基金;
D O I
暂无
中图分类号
R-332 [医用实验动物学]; R684.3 [关节炎];
学科分类号
100220 [骨科学]; 100402 [劳动卫生与环境卫生学];
摘要
背景:国内外学者对骨关节炎的发病机制和治疗方法进行了大量的研究,近期发现沉默信息调节因子1(SIRT1)基因在骨关节炎的发病中有着重要的意义,但对其研究尚少,用于该基因研究的骨关节炎模型也鲜有报道。目的:建立特异性的高龄SIRT1基因敲除小鼠膝骨关节炎模型,以期为骨关节炎的研究提供便利条件。方法:采用随机对照分组的方法,将小鼠分为4组,即SIRT1+/+小鼠假手术组(A组)、SIRT1+/+小鼠骨关节炎模型组(B组)、SIRT1-/-小鼠假手术组(C组)及SIRT1-/-小鼠骨关节炎模型组(D组),每组6只。行单侧膝关节前交叉韧带横断加内侧半月板切除建立骨关节炎模型,荧光定量聚合酶链反应检测SIRT1基因敲除情况;苏木精-伊红染色、番红O-固绿双染色观察膝关节软骨形态结构改变,Mankin评分评价膝骨关节炎程度。结果与结论:SIRT1-/-小鼠SIRT1 mRNA表达量明显低于SIRT1+/+小鼠(P<0.01),说明SIRT1基因敲除成功。染色结果显示,B、D两组膝关节软骨破坏明显,Mankin评分明显高于A、C两组(P<0.01),并且SIRT1基因敲除后Mankin评分升高更明显(P<0.05)。提示软骨组织特异性SIRT1基因敲除膝骨关节炎小鼠动物模型建立成功。
引用
收藏
页码:7895 / 7901
页数:7
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