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第41卷第7期       朱浩然,张     鑫,祁俊侠,等. 利用双引导RNA的CRISPR/Cas9技术构建Nudt3基因敲除小鼠[J].
                  2021年7月                     南京医科大学学报(自然科学版),2021,41(07):949-955                       ·955 ·


                的错误位置基因编辑          [12-15] ,我们对可能的 2 个脱靶               tion of PI3K/AKT signaling[J]. Cancer Biother Radio⁃
                区域进行了测序分析,没有发现脱靶现象,表明脱                                 pharm,2020,35(3):223-232
                靶效应在本研究构建的小鼠中概率较低。按照遗                            [8] ZHANG H,ZHANG L Q,YANG C C,et al. The high ex⁃
                传学理论,移码突变可以导致蛋白质氨基酸序列改                                 pression of NUDT5 indicates poor prognosis of breast can⁃
                                                                       cer by modulating AKT/Cyclin D signaling[J]. PLoS
                变,氨基酸序列错误的蛋白可以导致蛋白功能丧
                                                                       One,2021,16(2):e0245876
                失。因此,我们选择发生移码突变的基因编辑动物
                                                                 [9] MIKI D,ZINTA G,ZHANG W,et al. CRISPR/Cas9⁃based
                作为基因敲除小鼠模型,并在后续实验中,对Nudt3
                                                                       genome editing toolbox for arabidopsis thaliana[J]. Meth⁃
                基因移码突变的基因敲除小鼠进行Nudt3基因表达                               ods Mol Biol,2021,2200:121-146
                检测。结果显示,Nudt3 基因敲除鼠的多个组织中                        [10] ZHANG B. CRISPR/Cas gene therapy[J]. J Cell Physiol,
                Nudt3 基 因 的 mRNA 转 录 和 剪 切 产 生 了 变 异 ,                 2021,236(4):2459-2481
                Western blot结果显示Nudt3基因敲除鼠的多个组织                  [11] SONG X,LIU C,WANG N,et al. Delivery of CRISPR/Cas
                中均检测不到 NUDT3 表达,表明 Nudt3 基因已被成                         systems for cancer gene therapy and immunotherapy[J].
                功敲除。目前国内外对该基因在肥胖中的作用以                                  Adv Drug Deliv Rev,2021,168:158-180
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                及调控机制研究较少,本研究成功构建的 Nudt3 基
                                                                       al. CRISPR off⁃target analysis in genetically engineered
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                                                                       rats and mice[J]. Nat Methods,2018,15(7):512-514
                能和机制研究提供了理想的动物模型。
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