摘要本研究建立和鉴定TREX1基因667G>A突变的Aicardi-Goutières综合征（AGS）患者来源的诱导多能干细胞（iPSCs），获得Aicardi-Goutières综合征的诱导多能干细胞模型（AGS-iPSCs）。2020年12月中山市人民医院收治了1例Aicardi-Goutières综合征的3岁男性患儿，在家属知情同意下，收集患者5 ml外周血标本并分离单个核细胞。利用仙台病毒将OCT3/4、SOX2、c-Myc和Klf4四种转录因子转导外周血单个核细胞（PBMCs），将其重编程为诱导多能干细胞。通过形态学、RT-PCR、碱性磷酸酶（alkaline phosphatase，AP）染色、免疫荧光、体内畸胎瘤分化潜能实验及核型分析对其多能性和分化能力进行鉴定研究。结果显示成功构建Aicardi-Goutières综合征的诱导多能干细胞系，稳定传代后显示出典型的胚胎干细胞样形态，RT-PCR呈现出干细胞标志物的mRNA表达，AP染色阳性，OCT4、SOX2、NANOG、SSEA4、TRA-1-81和TRA-1-60多能性标记蛋白均为强阳性表达，体内畸胎瘤形成实验表明iPSCs可向外胚层（神经管样组织）、中胚层（血管壁组织）和内胚层（腺体样组织）分化，核型分析也证实了iPSCs仍保持原有核型（46，XY）。综上，本研究利用仙台病毒成功建立了Aicardi-Goutières综合征诱导多能干细胞系，为研究该疾病的发病机制和药物筛选提供了重要的模型平台。

abstractsTo establish and identify induced pluripotent stem cells (iPSCs) derived from patients with Aicardi-Goutières syndrome (AGS) with TREX1 gene 667G>A mutation, and obtain a specific induced pluripotent stem cell model for Aicardi-Goutières syndrome (AGS-iPSCs). A 3-year-old male child with Aicardi-Goutieres syndrome was admitted to Zhongshan People′s Hospital in December 2020. After obtaining the informed consent of the patient′s family members, 5 ml peripheral blood samples from the patient were collected, and mononuclear cells were isolated. Then,the peripheral blood mononuclear cells(PBMCs) were transduced with OCT3/4, SOX2, c-Myc and Klf4 by using Sendai virus, and PBMCs were reprogrammed into iPSCs. The pluripotency and differentiation ability of the cells were identified by cellular morphological analysis, real-time PCR, alkaline phosphatase staining (AP), immunofluorescence, teratoma formation experiments in mice. The results showed that the induced pluripotent stem cell line of Aicardi-Goutieres syndrome was successfully constructed and showed typical embryonic stem-like morphology after stable passage, RT-PCR showed mRNA expression of stem cell markers, AP staining was positive, OCT4, SOX2, NANOG, SSEA4, TRA-1-81 and TRA-1-60 pluripotency marker proteins were strongly expressed. In vivo teratoma formation experiments showed that iPSCs differentiate into the ectoderm (neural tube like tissue), mesoderm (vascular wall tissue) and endoderm (glandular tissue). Karyotype analysis also confirmed that iPSCs still maintained the original karyotype (46, XY). In conclusion, induced pluripotent stem cell line for Aicardi-Goutières syndrome was successfully established using Sendai virus, which provided an important model platform for studying the pathogenesis of the disease and for drug screening.