{{'Search' | translate}}
 

Trans-Blot® TurboTM Transfer System

公司名称: Bio-Rad Laboratories
产品编号: Trans-Blot® TurboTM Transfer System
Bio-protocol()
Company-protocol()
Other protocol()

Mutant Huntingtin Secretion in Neuro2A Cells and Rat Primary Cortical Neurons
Author:
Date:
2018-01-05
[Abstract]  Quantitative analysis of proteins secreted from the cells poses a challenge due to their low abundance and the interfering presence of a large amount of bovine serum albumin (BSA) in the cell culture media. We established assays for detection of mutant huntingtin (mHtt) secreted from Neuro2A cell line stably expressing mHtt and rat primary cortical neurons by Western blotting. Our protocol is based on reducing the amounts of BSA in the media while maintaining cell viability and secretory potential, and concentrating the media prior to analysis by means of ultrafiltration. [摘要]  由细胞分泌的蛋白质的定量分析由于它们的丰度低和在细胞培养基中干扰大量牛血清白蛋白(BSA)的存在而提出挑战。 我们建立检测突变亨廷顿蛋白(mHtt)检测分泌Neuro2A细胞系稳定表达mHtt和大鼠原代皮层神经元蛋白质印迹。 我们的方案是基于降低培养基中BSA的量,同时保持细胞活力和分泌潜能,并在通过超滤分析之前浓缩培养基。


【背景】许多蛋白质通过各种分泌途径从细胞分泌到细胞外环境中。这些途径包括在ER-高尔基体 - 质膜途径之后的常规分泌途径(Lee等,2004)和多个非常规途径,例如溶酶体胞吐作用,穿过质膜的易位和外泌体以及胞外体释放(Zhang和Schekman,2013)。为了研究这些途径,经常需要分析培养细胞分泌的蛋白质进入培养基。蛋白质可以游离形式分泌,也可以与胞膜结构如胞外体和外泌体结合(Zhang and ...

Efficient Generation of Multi-gene Knockout Cell Lines and Patient-derived Xenografts Using Multi-colored Lenti-CRISPR-Cas9
Author:
Date:
2017-04-05
[Abstract]  CRISPR-Cas9 based knockout strategies are increasingly used to analyze gene function. However, redundancies and overlapping functions in biological signaling pathways can call for generating multi-gene knockout cells, which remains a relatively laborious process. Here we detail the application of multi-color LentiCRISPR vectors to simultaneously generate single and multiple knockouts in human cells. We provide a complete protocol, including guide RNA design, LentiCRISPR cloning, viral production and transduction, as well as strategies for sorting and screening knockout cells. The validity of ... [摘要]  基于CRISPR-Cas9的敲除策略越来越多地用于分析基因功能。然而,生物信号通路中的冗余和重叠功能可能需要产生多基因敲除细胞,这仍然是一个相对费力的过程。在这里,我们详细介绍了多色LentiCRISPR载体在人体细胞中同时产生单次和多次敲除的应用。我们提供了一个完整的方案,包括指导RNA设计,LentiCRISPR克隆,病毒生产和转导,以及排序和筛选敲除细胞的策略。该过程的有效性通过同时删除白血病细胞系中多达四个程序性细胞死亡介质和来自患者来源的急性淋巴细胞白血病异种移植物,其中单细胞克隆是不可行的。该协议允许任何具有基本细胞生物学设备的实验室,生物安全2级设备和荧光激活细胞分选功能,可在一个月内有效产生单基因和多基因敲除细胞系或原代细胞。

从对细菌基因组中被称为聚簇定期交织的短回文重复(CRISPR)的遗传元件的好奇的初步观察开始(Ishino等人,1987; Mojica等人,2000 )和随后在哺乳动物细胞中的基因编辑(Cong等人,2013; Mali等人,2013),CRISPR-Cas9已经成为廉价和有效的基因编辑。随着从烟草植物细胞到斑马鱼和原代人类细胞(Hsu等人,2014)的细胞系统的成功应用,CRISPR-Cas9可以通过短的20个核苷酸RNA序列的设计来引导在大基因组内的靶向DNA双链断裂(DSB)(Park等人,2016)。 ...

产品评论