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Triton X-100

Company: Triton-X
Catalog#: T8787
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A Quantitative Single-cell Flow Cytometry Assay for Retrograde Membrane Trafficking Using Engineered Cholera Toxin
Author:
Date:
2020-08-05
[Abstract]  The organization and distribution of proteins, lipids, and nucleic acids in eukaryotic cells is an essential process for cell function. Retrograde trafficking from the plasma membrane to the Golgi and endoplasmic reticulum can greatly modify cell membrane composition and intracellular protein dynamics, and thus typifies a key sorting step. However, methods to efficiently quantify the extent or kinetics of these events are currently limited. Here, we describe a novel quantitative and effectively real-time single-cell flow cytometry assay to directly measure retrograde membrane transport. The assay takes advantage of the well-known retrograde trafficking of cholera toxin engineered with split-fluorescent proteins to generate novel tools for immediate monitoring of intracellular trafficking. ... [摘要]  [摘要]蛋白质、脂类和核酸在真核细胞中的组织和分布是细胞功能的重要过程。从质膜到高尔基体和内质网的逆向运输可以极大地改变细胞膜的组成和细胞内蛋白质的动态变化,因此是一个关键的分选步骤。然而,有效量化这些事件的程度或动力学的方法目前是有限的。在这里,我们描述了一种新的定量和有效的实时单细胞流式细胞术检测直接测量逆行膜转运。这项检测利用了众所周知的霍乱毒素逆行转移的特性,利用裂解荧光蛋白产生了新的工具,用于即时监测细胞内的转移。这种方法将大大扩展研究细胞内膜转运的生物学基础,以及细胞膜转运系统如何适应不同细胞类型和细胞状态的生理需要。

[背景]所有的真核细胞都依赖于它们动态地将分子分类和分离到膜结合的亚细胞器中的能力,以便组织和分配到细胞的特定区域。在这一过程中的一个重要步骤是早期分类内体和跨高尔基网络(TGN)。在从分选内体产生的其他贩运途径中,通过分泌途径到TGN的逆行贩运是一个关键的分选步骤(Johannes和Popoff,2008)。细胞膜蛋白和脂类发生逆向转运。从TGN到内质网(ER)的进一步逆行贩运可通过一些质膜脂质完成,并可巧妙地由几种细菌毒素和病毒协同作用而致病(Cho等人,2012年;Personnic等人,2016年;Williams和Tsai,2016年)。

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Preparing Immunolocalization Slides of Maize Meiotic Chromosomes for Three-dimensional Microscopy
Author:
Date:
2020-07-20
[Abstract]  The protocol provides fully detailed steps for preparing microscopic slides of acrylamide-embedded maize meiotic cells. This method is particularly useful for examining chromatin structure and chromosome arrangement without destroying the three-dimensional organization of the nucleus. [摘要]  [摘要] 该协议提供了制备丙烯酰胺包埋的玉米减数分裂细胞显微玻片的完整详细步骤。该方法对于检查染色质结构和染色体排列而不破坏细胞核的三维结构特别有用。

[背景] 减数分裂是一个动态过程,涉及同源染色体配对,突触和重组。用于研究减数分裂蛋白的定位和动力学的细胞学分析对于了解这些过程的细节至关重要。在许多显微载玻片制备方法中,空间染色质的组织受到机械加工或化学溶剂的破坏。在这里,我们描述了三维显微镜协议,以分析染色质结构和减数分裂蛋白的定位,而不会干扰核组织。

A Blood-retina Barrier Permeability Assay in Young Mice Using Sulfo-NHS-LC-biotin Perfusion
Author:
Date:
2018-10-20
[Abstract]  Brain and retinal vasculatures exhibit restricted vascular permeability known as blood-brain barrier and blood-retina barrier. Vascular permeability can be evaluated by perfusion of the amine reactive ester derivatives of biotin such as sulfo-NHS-LC-biotin. This protocol describes experimental procedures of sulfo-NHS-LC-biotin perfusion to evaluate retinal vascular permeability. Perfused sulfo-NHS-LC-biotin remained within vessels in wild-type postnatal day 15 (P15) retinas, confirming an intact blood-retina barrier. In contrast, sulfo-NHS-LC-biotin was occasionally detected in extravascular spaces in perfused Eogt−/− retinas suggesting a partly impaired vascular integrity in the absence of Eogt (Sawaguchi et al., 2017). [摘要]  脑和视网膜脉管系统表现出受限的血管通透性,称为血脑屏障和血 - 视网膜屏障。 血管通透性可以通过灌注生物素的胺反应性酯衍生物如磺基-NHS-LC-生物素来评估。 该方案描述了磺基-NHS-LC-生物素灌注的实验程序,以评估视网膜血管通透性。 灌注的磺基-NHS-LC-生物素保留在野生型出生后第15天(P15)视网膜的血管内,证实了完整的血 - 视网膜屏障。 相比之下,在灌注的 Eogt - / - >视网膜中,偶尔会在血管外空间检测到磺基-NHS-LC-生物素,这表明在没有的情况下血管完整性部分受损。 Eogt >(Sawaguchi et al。>,2017)。

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