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Corning® 100 mL L-Glutamine

Company: Corning
Catalog#: 25-005-CI
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Quantitative Live-cell Reporter Assay for Noncanonical Wnt Activity
Author:
Date:
2018-03-20
[Abstract]  Noncanonical Wnt signaling functions independently of the β-catenin pathway to control diverse developmental processes, and dysfunction of the pathway contributes to a number of human pathological conditions, including birth defects and metastatic cancer. Progress in the field, however, has been hampered by the scarcity of functional assays for measuring noncanonical Wnt signaling activity. We recently described the Wnt5a-Ror-Kif26b (WRK) reporter assay, which directly monitors a post-transcriptional regulatory event in noncanonical Wnt signaling. In this protocol, we describe the generation of the stable GFP-Kif26b reporter cell line and a quantitative reporter assay for detecting and measuring Wnt5a signaling activities in live cells via flow cytometry. [摘要]  非经典Wnt信号独立于β-catenin途径发挥功能来控制不同的发育过程,并且该途径的功能障碍导致许多人类病理状况,包括出生缺陷和转移性癌症。 然而,该领域的进展一直受到用于测量非典型Wnt信号活性的功能测定的稀缺性的阻碍。 我们最近描述了Wnt5a-Ror-Kif26b(WRK)记者测定法,其直接监测非典型Wnt信号传导中的转录后调节事件。 在该协议中,我们描述了通过流式细胞术检测和测量活细胞中Wnt5a信号传导活性的稳定GFP-Kif26b报告细胞系和定量记者测定法的产生。

【背景】从历史上看,转录报告基因检测方法促进了主要信号通路的描述。具体来说,β-连环蛋白依赖性萤光素酶或基于GFP的转录报道基因有助于阐明经典Wnt /β-连环蛋白途径的分子机制(Korinek et al。,1997; Fuerer and Nusse,2010)。尽管已经描述了许多基于JNK依赖性转录的非经典Wnt信号传导报道分子,但是这些转录应答是否是非经典Wnt信号传导的主要或次要仍不清楚(Veeman等,2003; Nishita等,等,2010; Ohkawara和Niehrs,2011)。此外,用于实时检测非转录性Wnt5a-Ror信号传导事件的记者尚未获得。 ...

Tracking Endocytosis and Intracellular Trafficking of Epitope-tagged Syntaxin 3 by Antibody Feeding in Live, Polarized MDCK Cells
Author:
Date:
2018-02-05
[Abstract]  The uptake and trafficking of cell surface receptors can be monitored by a technique called ‘antibody-feeding’ which uses an externally applied antibody to label the receptor on the surface of cultured, live cells. Here, we adapt the traditional antibody-feeding experiment to polarized epithelial cells (Madin-Darby Canine Kidney) grown on permeable Transwell supports. By adding two tandem extracellular Myc epitope tags to the C-terminus of the SNARE protein syntaxin 3 (Stx3), we provided a site where an antibody could bind, allowing us to perform antibody-feeding experiments on cells with distinct apical and basolateral membranes. With this procedure, we observed the endocytosis and intracellular trafficking of Stx3. Specifically, we assessed the internalization rate of Stx3 from the ... [摘要]  细胞表面受体的摄取和贩卖可以通过被称为“抗体 - 进纸”技术,其在外部使用上应用的抗体来标记培养的活细胞的表面上的受体进行监测。在这里,我们适应传统的抗体喂养实验极化上皮细胞(Madin-Darby犬肾)生长在透性transwell支持。通过添加两个串联胞外Myc表位标签的SNARE蛋白突触3(Stx3)的C末端,我们提供了一种站点,其中与抗体可以结合,使我们能够用不同的顶端和基底外侧膜对细胞进行抗体 - 喂养实验。通过这个程序,我们观察到Stx3的内吞和细胞内运输。具体而言,我们评估从基底外侧膜Stx3的内在化速率和在时间和空间上使用固定在不同时间点的细胞免疫荧光显微镜随后的内吞观察路径。为此,介绍了以下可追踪单层的贩运行为:来自限制膜的靶蛋白。

【背景】SNARE蛋白突触3(Stx3)是已知的建立在极化上皮细胞顶端 - 基底极性(低等人,1996年Delgrossi 等人,1997年Weimbs 等人,1997;低等人,1998;黎等人,2002;低等人

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一个典型的12孔细胞培养皿的阱内的transwell小室的聚碳酸酯膜的细胞培养插入物的图1示意图。斯特朗细胞是在膜的顶部和培养将形成紧密的单层做密封关聚碳酸酯膜将顶端介质隔室与基底外侧介质隔室分开。 ...

Infection of Caenorhabditis elegans with Vesicular Stomatitis Virus via Microinjection
Author:
Date:
2017-11-20
[Abstract]  Over the past 15 years, the free-living nematode, Caenorhabditis elegans has become an important model system for exploring eukaryotic innate immunity to bacterial and fungal pathogens. More recently, infection models using either natural or non-natural nematode viruses have also been established in C. elegans. These models offer new opportunities to use the nematode to understand eukaryotic antiviral defense mechanisms. Here we report protocols for the infection of C. elegans with a non-natural viral pathogen, vesicular stomatitis virus (VSV) through microinjection. We also describe how recombinant VSV strains encoding fluorescent or luciferase reporter genes can be used in conjunction with simple fluorescence-, survival-, and luminescence-based assays to ... [摘要]  在过去的15年中,线虫自由生活已经成为探索真核细菌和真菌病原体真核免疫的重要模型系统。 最近,使用天然或非天然线虫病毒的感染模型也已经在C中建立。线虫。 这些模型提供了使用线虫了解真核抗病毒防御机制的新机会。 在这里,我们报告感染的协议。 线虫与非天然病毒病原体,水泡性口炎病毒(VSV)通过显微注射。 我们还描述了编码荧光或萤光素酶报告基因的重组VSV毒株如何与简单的基于荧光,存活和发光的分析结合使用来鉴定宿主遗传背景,并对病毒感染有不同的易感性。

【背景】由于它的遗传易用性,体积小,文化价廉,透明的身体,自由生活的线虫秀丽隐杆线虫作为模式生物提供了许多优点。此外,C的易感性。线虫对人类多种细菌和真菌病原体的作用使得这种蠕虫成为研究微生物发病机制的有吸引力的系统(Zhang和Hou,2013; Cohen and Troemel,2015)。最近,发现了正义ssRNA奥赛病毒(OV)作为第一种天然的病毒病原体。线虫已经提示使用OV- C。 elegans 模型来定义线虫抗病毒防御机制(Felix等人,2011; Gammon,2017)。这些研究已经证明了线虫抗病毒RNA干扰途径组分如Dicer相关解旋酶1(DRH-1)在限制病毒复制中的明确作用(Ashe等人,2013)。

为了补充OV模型系统,我们最近报道了新一代病毒的产生。使用反义ssRNA水泡性口炎病毒(VSV)(Gammon等人,2017)的线虫模型。用VSV感染野生型(N2)蠕虫是致命的,虽然抗病毒反应(例如突变体,drh-1突变体)突变体缺陷会更快地感染感染(Gammon ...

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