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Research Article
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Erratum Notice
Important: There has been an erratum issued for this article. View Erratum Notice
Retraction Notice
The article Assisted Selection of Biomarkers by Linear Discriminant Analysis Effect Size (LEfSe) in Microbiome Data (10.3791/61715) has been retracted by the journal upon the authors' request due to a conflict regarding the data and methodology. View Retraction Notice
资料来源:Denaxa, M., et al.,化学遗传学工程皮质中间神经元祖细胞移植到早期产后小鼠大脑中。J. Vis. Exp. (2019年)
该视频演示了将携带目标基因的质粒载体注射到胚胎脑切片中的中间神经元祖细胞中,然后进行电穿孔以进入质粒和基因表达的过程。这些修饰的祖细胞以后可用于治疗脑部疾病。

图1:用于急性电穿孔实验的代表性端脑切片。(A-C)在三个不同的连续喙尾水平获得远脑切片,用 4',6-二脒基-2-苯基吲哚 (DAPI) 染色。LGE:外侧神经节隆起;MGE:内侧神经节隆起;CGE:尾神经节隆起。比例尺 = 200 μm。黄色星号表示每个切片中的电穿孔位点。白线标记神经节隆起的边缘。

图 2:实验工作流程的示意图。(A)用适当的构建体电穿孔小鼠脑切片,(B)12小时后,分离修饰的皮质中间神经元(CI)前体,(C)移植到新生小鼠幼崽的皮质中(P0−P2)。为了改变未成熟CI的活性,根据所提出的方案,接受细胞移植的P14幼崽注射CNO或载体四个组成日。(A')急性小鼠脑切片电穿孔装置的照片。

图3:代表性的成功急性切片电穿孔实验。(A)来自E14.5胚胎大脑的代表性冠状切片,用pCAGGs-IRES-GFP(绿色荧光蛋白)和pCAGGs-hM3D(Gq)-IRES-RFP(红色荧光蛋白)质粒转染CGE并培养12小时。该切片已对 GFP (A、B、C) 和 RFP (A、B、D) 进行了免疫染色。放大图 A 中的方框区域以显示荧光报告基因 (B)、GFP (C) 和仅 RFP (D) 的表达。白线标记神经节隆起的边缘。B-D:相同的照片、不同的通道或两个不同通道的组合。比例尺 = 200 μm (A)、100 μm (B-D)。
| 培养基/补充剂 | |||
| 神经基础培养基 | GIBCO (ThermoFisher Scientific) | 21103-049 | 神经元基础培养基 |
| 设备 | |||
| 电穿孔器 | BTX | ECM 830 发生器 | |
| 急性切片电穿孔的注射器 | Eppendorf | FemtoJet 显微注射器 | |
| 风筝 手动显微纵器 | WPI | KITE-M3-R | |
| 铂金电子 (I) | Protech International Inc. | CUY-700-1 | |
| 铂金电子 (II) | Protech International Inc. | CUY-700-2 | |
| 钢底板 | WPI | 5479 | |
| 其他材料 | |||
| 电穿孔玻璃毛细管 | VWR | 1B100-4 | |
| 器官组织培养皿 | BD Biosciences (Falcon) | 353037 |