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Paraformaldehyde, EM Grade, Purified

Company: Electron Microscopy Sciences
Catalog#: 19208
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Protocol for the Isolation and Super-resolution dSTORM Imaging of RyR2 in Cardiac Myocytes
Author:
Date:
2018-08-05
[Abstract]  Since its inception, super-resolution microscopy has played an increasingly important role in the discovery and characterization of nanoscale biological structure. dSTORM, which is one of the most commonly applied methods, relies on stochastic photoswitching of fluorophores to recreate a super-resolution image. The cardiac field has particularly benefitted from the application of this technique, as it has enabled sub-diffraction-limit visualization of calcium release units (CRUs) and the fundamental structures that trigger contraction. Acquisition of such images requires careful, reproducible sample preparation, and consistent imaging conditions maintained for the duration of the experiment. Here we present standardized methods for the production of dSTORM images of the Ca2+ ... [摘要]  自成立以来,超分辨率显微镜在纳米级生物结构的发现和表征中发挥着越来越重要的作用。 dSTORM是最常用的方法之一,它依赖于荧光团的随机光切换来重建超分辨率图像。心脏场特别受益于该技术的应用,因为它已经实现了钙释放单元(CRU)的子衍射极限可视化和触发收缩的基本结构。获取这些图像需要仔细,可重复的样品制备,并且在实验期间保持一致的成像条件。在这里,我们提出了生产心肌细胞中Ca 2 + 释放通道Ryanodine Receptor type-2(RyR2)的dSTORM图像的标准化方法。所提出的方案特别关注涉及原发性心肌细胞分离,样品制备和成像的步骤,其中提供了针对实验溶液和显微镜设置的细节。本讨论之后是各种分析技术的概述,以识别集群和CRU中的RyR2组织

【背景】近年来,超分辨率显微镜的普及率迅速提高。已经描述了各种超分辨率技术,其使光学分辨率远低于光的衍射极限,在某些情况下接近可通过电子显微镜获得的光学分辨率。总之,这些技术的出现导致了纳米级生物结构,结构域和蛋白质相互作用的新研究的爆炸式增长。一种流行的超分辨率技术是直接随机光学显微镜(dSTORM),与标准共聚焦显微镜相比,它将相对简单的样品处理的优势与分辨率提高了约10倍(van de Linde ...

Isolation and Infection of Drosophila Primary Hemocytes
Author:
Date:
2017-06-05
[Abstract]  Phagocytosis of invading pathogens and their subsequent clearance in lysosomes is important for organismal fitness. We have devised the following protocol to extract phagocytic hemocytes from wild-type and mutant Drosophila larvae and infect the isolated hemocytes with GFP-labeled E. coli to measure the rate of phagocytosis and degradation within individual hemocytes over time. [摘要]  入侵病原体的吞噬作用及其随后在溶酶体中的清除对于有机体适应性是重要的。我们设计了以下方案从野生型和突变型果蝇幼虫中提取吞噬性血细胞,并用GFP标记的E感染分离的血细胞。大肠杆菌以测量个体血细胞内吞噬和降解的速度。

背景 下面描述的实验可用于研究吞噬体的生物发生,成熟和向溶酶体的递送。细菌积累已经在免疫受损的果蝇的背景下得到充分的研究,其具有IMD或Toll信号传导中的缺陷,并导致抗微生物肽的表达降低(例如,Lemaitre和Hoffmann ,2007; Kleino和Silverman,2014)。细菌感染的细胞响应在果蝇中的研究较少,大多数研究集中于干扰血细胞对细菌的最初吞噬吞噬的突变(Kocks等人,2005年) ;帕森斯和福利,2016)。这种细菌摄取是直接使用FACS分析进行测量(Tirouvanziam等人,2004)。然而,对于吞噬体成熟的详细分析,我们发现检查附着在玻璃盖板上的个体血细胞是有利的(Akbar等人,2011; Rahman等人。 ,2012; Akbar等人,2016),因为这个过程为我们研究吞噬体成熟提供了时间和空间分辨率的最佳组合。

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