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               ·212 ·                            南 京    医 科 大 学 学         报                        2023年2月


              应。最近的研究表明,NAD 合成途径关键基因的突                               malities:paternal 16p11.2 microdeletion and maternal
                                      +
              变可导致先天性畸形,包括编码色氨酸转运蛋白的                                 17q12 microduplication[J]. Psychiatr Genet,2021,31
              基因、编码Kynurenine通路酶的基因(NMNAT1⁃3和                       (6):246-249
              NADSYN1) 。另外亦有研究表明 QPRT 拷贝数缺                      [8] ULLMARK T,MONTANO G,JÄRVSTRÅT L,et al. Anti⁃
                        [17]
                                                                     apoptotic quinolinate phosphoribosyltransferase(QPRT)
              失并外源性烟酸缺乏的小鼠血液 NAD 浓度明显降
                                                 +
                                                                     is a target gene of Wilms’tumor gene 1(WT1)protein in
              低 [18] 。基于QPRT参与NAD 合成,推测小鼠模型表
                                       +
                                                                     leukemic cells[J]. Biochem Biophys Res Commun,2017,
              现的肾脏病理组织学表型可能与其过低的 NAD 浓
                                                         +
                                                                     482(4):802-807
              度相关,这亦为我们研究 QPRT 影响肾脏发育的机
                                                                [9] CHAN K,LI X. Current epigenetic insights in kidney de⁃
              制提供了方向。                                                velopment[J]. Genes(Basel),2021,12(8):1281
                  综上所述,本研究从 QPRT 基因敲除的成年小                       [10] 刘曼菱,赵丽华,张曼玲,等. 胎猪肾脏发育不同时期相
              鼠与胎鼠的肾脏等组织水平研究QPRT基因对胚胎                                关信号分子的表达[J]. 南京医科大学学报(自然科学
              肾脏发育的致病作用,预测 QPRT 基因可能为 RHD                            版),2019,39(6):822-828
              的潜在致病基因。本研究的不足之处在于未能探                             [11] ISHIDOH K,KAMEMURA N,IMAGAWA T,et al. Quino⁃
              索 QPRT 在肾脏发育中的具体调控机制。但是                                linate phosphoribosyl transferase,a key enzyme in de no⁃
                                                                     vo NAD(+)synthesis,suppresses spontaneous cell death
              QPRT 基因是 NAD 合成途径的关键酶基因,这亦
                               +
                                                                     by inhibiting overproduction of active⁃caspase⁃3[J]. Bio⁃
              为从代谢角度深入研究 RHD 的致病机制提供了依
                                                                     chim Biophys Acta,2010,1803(5):527-533
              据,并有望为后续的临床诊断及靶向治疗提供新
                                                                [12] 朱浩然,张     鑫,祁俊侠,等. 利用双引导RNA的CRIS⁃
              线索。                                                    PR/Cas9 技术构建 Nudt3 基因敲除小鼠[J]. 南京医科
             [参考文献]                                                  大学学报(自然科学版),2021,41(7):949-955
                                                                [13] POYAN MEHR A,TRAN M T,RALTO K M,et al. De no⁃
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                   autism spectrum disorder and two different genetic abnor⁃                   (本文编辑:唐      震)
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