GPx-1  P198L转基因小鼠模型的建立及鉴定

王素琴; 朱延河; 林琳等

GPx-1 P198L转基因小鼠模型的建立及鉴定

The Establishment and Identification of GPx-1P198LGene Systemic Expression Transgenic Mice

摘要

摘要: 目的建立系统性高表达含198位点多态性的胞质型谷胱甘肽过氧化物酶（cellular glutathione peroxidase-1，GPx-1）转基因小鼠（GPx-1 P198L），为研究GPx-1 P198L在氧化应激相关疾病中的作用提供动物模型。方法利用显微注射法将限制性内切酶BamHⅠ和AccⅠ线性化的GPx-1(198Leu)转基因载体注射到C57BL/6J小鼠受精卵中，建立GPx-1 P198L转基因小鼠。PCR鉴定实验后小鼠的基因型，Western blot检测GPx-1蛋白表达。结果建立了GPx-1 P198L首建鼠13只，筛选后9只原代转基因小鼠能产生子代，其中4只原代转基因小鼠产生的子代（F1代）心脏组织高表达GPx-1蛋白，4只小鼠成功建系。结论建立了系统性表达突变型人GPx-1（198Leu）的转基因小鼠，为研究GPx-1（198Leu）在氧化应激相关疾病中的作用提供了动物模型。

Abstract: Objective To generate systemic expression human cellular glutathione peroxidase-1 (GPx-1) (198Leu) transgenic mice model in order to investigate the functional variants in GPx gene in oxidative stress-related diseases. Methods After linearization with Bam HⅠ and AccⅠ, the transgenic construct GPx-1 (198Leu) was microinjected into the zygotes of C57BL/6J mice to generate transgenic mice, whose genotype was detected by PCR with specific primers. The GPx gene expression profile was determined by Western blotting. Results 13 transgenic founder mice were successfully generated. Western blotting result showed that the protein expression level of 4 transgenic mice in hearts were higher than that of wild type mice. Conclusion Human GPx-1 P198L transgenic mice was successfully established. This kind of animal model is of significance for making further researches on oxidative stress-related diseases.

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