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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Selection of Biomarkers by Linear Discriminant Analysis Effect Size (LEfSe) in Microbiome Data (10.3791/61715) has been retracted by the journal upon the authors' request due to a conflict regarding the data and methodology.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:Crocker, K. L., et al。刺激和分析果蝇中枢脑中的成体神经发生。J. Vis. Exp. (2021)
该视频演示了果蝇大脑中穿透性创伤性脑损伤的诱导。选择新出现的果蝇,麻醉并放置在配备荧光的立体显微镜下。识别表达 GFP 的蘑菇体,并插入 Minutien 针以造成伤害。允许苍蝇恢复以进行进一步研究。
1. 穿透性创伤性脑损伤 (PTBI;图 1)

图 1:成年果蝇中枢脑的穿透性创伤性脑损伤 (PTBI)。(A) 成年苍蝇头的外部示意图。这是正面视图。因此,动物的右侧位于观看者的左侧。(B) 成年果蝇头部的内部示意图,受伤轨迹以灰色表示。这是后视图。因此,在这张图片和后续的图中,大脑的右侧是右侧的。中枢脑 PTBI 影响多个大脑结构,包括蘑菇体(绿色)和大脑外的组织,包括脂肪体(蓝色)和血细胞(红色)。CB = 中枢脑区。OL= 视叶区域。(C) 活体成虫头部的背视图,其中蘑菇体(箭头)用绿色荧光蛋白 (GFP) 标记。这是"标准基因型"(详见正文)。PTBI 方案可重复地导致蘑菇体受伤。
| 二氧化碳起泡器 | 杰纳西科学 | 59-181 | 麻醉 |
| 二氧化碳垫 | 杰纳西科学 | 59-114 | 麻醉 |
| 棉塞 | 杰纳西科学 | 51-101 | 对于 EdU 标签 |
| 果蝇小瓶 | 杰纳西科学 | 32-109 | 对于 EdU 标签 |
| 甲醛 | 西格玛·奥尔德里奇 | 252549 | 用于修复成人大脑,添加到 PEM |
| Minutien pins | 精细科学工具 | 26002-10 | 用于脑损伤;12.5 μm 直径的尖端和 100 μm 直径的棒 |
| NIGHTSEA 体视显微镜荧光适配器 | 电子显微镜科学 | SFA-GR | 用于解剖显微镜的荧光设置 |
| 磷酸盐缓冲盐唾液 (PBS) | 来自不同公司的组件 | 用于解剖大脑和制备免疫组化封闭和洗涤溶液;100 mM 的 K2HPO4,140 mM 的 NaCl,pH 值 7.0 | |
| 含0.1%Triton X-100 (PT)的磷酸盐缓冲盐水 | 来自不同公司的组件 | 用于清洗解剖的大脑 | |
| 两对 #5 制表钳 | 精细科学工具 | 11255-20 | 用于固定 Minutien 针和脑解剖 |