突变DJ-1转基因小鼠模型的建立

Construction of Transgenic Mice Carrying DJ-1 Mutation

目的探讨DJ-1L166P突变基因在帕金森病发生中的作用。方法构建pcDNA3.1-myc-his-DJ-1L166P真核表达载体,利用显微注射方法将DJ-1L166P基因片段(约3.9kb)导入BDF1小鼠受精卵雄原核并移植到同期受孕的ICR假孕母鼠输卵管中,对产出仔鼠的鼠尾组织DNA进行聚合酶链反应和Southern blot检测,对Southern blot鉴定阳性的转基因小鼠进行逆转录聚合酶链反应和Western blot检测。结果共产生20只子代小鼠,1号和7号为DJ-1L166P转基因阳性小鼠。1号转基因小鼠大脑、小脑、肝、肺、肾、睾丸有不同程度的DJ-1mRNA表达,均高于正常对照小鼠,但只有大脑中DJ-1mRNA的表达水平显著高于正常对照小鼠(P<0.05);7号转基因小鼠只有肝、肺组织中有DJ-1mRNA表达,也高于正常对照小鼠,但差异无统计学意义。只有1号小鼠大脑有His标签蛋白的表达。结论成功获得1只DJ-1L166P基因突变转基因小鼠模型,为课题的下一步实验研究打下良好的基础。

Objective To study the role of DJ-1L166P mutation in Parkinson Disease.Methods pcDNA3.1-myc-his-DJ-1 L166P was constructed and then microinjected into mouse fertilized eggs.These eggs were transplanted into the oviduct of pseudopregnant mice.Transgenic mice were identified by polymerase chain reaction and Southern blot.Reverse transcription plolymerase chain reaction and Western blot were used to detect gene transcription and expression.Results A total of 20 transgenic mice were obtained,and 2 of these 20 m...