{{'Search' | translate}}
 

Aspirator tube assemblies for calibrated microcapillary pipettes

用于校准的微毛细管移液器的抽吸管组件

Company: Sigma-Aldrich
Catalog#: A5177
Bio-protocol()
Company-protocol()
Other protocol()

Organotypic Explants of the Embryonic Rodent Hippocampus: An Accessible System for Transgenesis
Author:
Date:
2018-03-20
[Abstract]  This protocol describes the technique of ex-vivo electroporation to target embryonic hippocampal progenitors in an organotypic slice preparation. This technique allows gene perturbation for examining developmental processes in the embryonic hippocampus while retaining the environment and connectivity of the cells. Gene perturbation can include Cre-mediated recombination, RNAi-mediated knockdown, gene overexpression, or a combination of any of these. Ex-vivo electroporation can be performed at a wide range of embryonic stages, giving temporal control to the experimenter. Spatial control can be achieved more easily by preparing the brain in a Petri dish to target particular regions of the hippocampus. The electroporated explant cultures provide a highly tractable system ... [摘要]  该协议描述了在器官切片制备中靶向胚胎海马祖细胞的体外电穿孔技术。 该技术允许基因摄动检查胚胎海马体的发育过程,同时保持细胞的环境和连接性。 基因扰动可以包括Cre介导的重组,RNAi介导的敲低,基因过表达或这些中任何的组合。 可以在广泛的胚胎阶段进行体外电穿孔,为实验者提供时间控制。 空间控制可以通过在皮氏培养皿中准备大脑来瞄准海马的特定区域来实现。 电穿孔的外植体培养物提供了用于研究包括祖细胞增殖,迁移和细胞命运获取在内的发育过程的高度易处理的系统。

【背景】由于其位于尾端的端脑,海马在可达性方面提出了挑战。胚胎海马甚至更难以接近,需要用子宫外科手术方法进行实验操作。器官切片文化规避了这个问题,同时保留了海马场细胞构筑学的许多方面,包括分子特征和连接性。尽管有描述来自啮齿类动物大脑的海马外植体产后培养的规程(Stoppini等人,1991; ...

Stereotaxic Adeno-associated Virus Injection and Cannula Implantation in the Dorsal Raphe Nucleus of Mice
Author:
Date:
2017-09-20
[Abstract]  Optogenetic methods are now widespread in neuroscience research. Here we present a detailed surgical procedure to inject adeno-associated viruses and implant optic fiber cannulas in the dorsal raphe nucleus (DRN) of living mice. Combined with transgenic mouse lines, this protocol allows specific targeting of serotonin-producing neurons in the brain. It includes fixing a mouse in a stereotaxic frame, performing a craniotomy, virus injection and fiber implantation. Animals can be later used in behavioral experiments, combined with optogenetic manipulations (Dugué et al., 2014; Correia et al., 2017) or monitoring of neuronal activity (Matias et al., 2017).

The described procedure is a fundamental step in both optogenetic and fiber photometry experiments ...
[摘要]  光神学研究现在广泛存在。在这里,我们提供一个详细的外科手术,以注射腺相关病毒和植入光纤插管在活的小鼠背侧核心(DRN)。结合转基因小鼠系,该方案允许在脑中特异性靶向产生5-羟色胺的神经元。它包括将鼠标固定在立体定位框架中,执行开颅手术,病毒注射和纤维植入。动物可以随后用于行为实验,结合光遗传操作(Dugué等,2014; Correia等,2017)或监测神经元活动(Matias等,2017)。
  所描述的程序是深部脑区域的光生和光纤测光实验中的基本步骤。它针对DRN中的血清素神经元进行了优化,但可以应用于任何其他细胞类型和脑区域。当使用表达功能相关水平的光遗传工具或报告物系的转基因小鼠品系时,可以跳过病毒注射步骤,并将该方案降低到插管植入程序。
【背景】随着光遗传学方法的出现,使用光纤和遗传编码的探针来操纵或监测大脑活动已迅速扩大。光致发光工具对于研究神经调节系统特别有用,因为它们通常以位于深部脑区域的神经元簇为特征,对多个脑区域进行长期和广泛的预测。先前已经针对脑中的不同区域描述了病毒注射和纤维插管植入(例如,腹侧被盖区域[Tsai等人,2009],基因座(Carter等,2010))。
  鉴于其深部解剖学位置在导管和上矢状窦下方,针对背侧核心核(DRN,血清素投影到前脑的主要来源)可能是复杂的。使用标准的外科手术可能导致大量出血和低成功率,导致样本量较小(Ranade和Mainen ...

Chick Neural Tube Explant Culture
Author:
Date:
2015-10-05
[Abstract]  The neural tube explant culture technique allows in vitro culturing of small pieces of neural tissue isolated from e.g., chick or mouse embryonic tissue in a matrix of collagen for defined periods of time. This method can be used to study the effects of defined molecules on developmental processes such as neural progenitor proliferation and neuronal differentiation and/or survival. Since the explant material can also be prepared from embryonic tissue electroporated with expression vectors, this technique can be adapted to study gene function in the presence of specific environmental signals. Different regions of the neural tube can also be isolated during the dissection step, allowing specific regions of the neural tube to be studied separately. Here, we present a neural ... [摘要]  神经管外植体培养技术允许在胶原基质中从例如小鸡或小鼠胚胎组织分离的小片神经组织的体外培养定义的时间段。 该方法可用于研究限定分子对发育过程如神经祖细胞增殖和神经元分化和/或存活的影响。 由于外植体材料也可以从用表达载体电穿孔的胚胎组织制备,该技术可以适于在特定环境信号的存在下研究基因功能。 也可以在解剖步骤期间分离神经管的不同区域,允许单独研究神经管的特定区域。 在这里,我们提出了我们已经在几个研究中使用的神经管外植体培养方法(Dias等人,2014; Lek等人,2010; Vallstedt, et al。,2005)。

Comments