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ProLong Gold Antifade Mountant

ProLong ® Gold Antifade Reagent

Company: Thermo Fisher Scientific
Catalog#: P36930
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Ciliary Assembly/Disassembly Assay in Non-transformed Cell Lines
Author:
Date:
2018-03-20
[Abstract]  The primary cilium is a non-motile sensory organelle whose assembly and disassembly are closely associated with cell cycle progression. The primary cilium is elongated from the basal body in quiescent cells and is resorbed as the cells re-enter the cell cycle. Dysregulation of ciliary dynamics has been linked with ciliopathies and other human diseases. The in vitro serum-stimulated ciliary assembly/disassembly assay has gained popularity in addressing the functions of the protein-of-interest in ciliary dynamics. Here, we describe a well-tested protocol for transfecting human retinal pigment epithelial cells (RPE-1) and performing ciliary assembly/disassembly assays on the transfected cells. [摘要]  主要纤毛是一种非运动感觉细胞器,其装配和拆卸与细胞周期进程密切相关。 初级纤毛在静止细胞中从基体拉长并随着细胞重新进入细胞周期而被吸收。 睫状动力失调与纤毛病和其他人类疾病有关。 体外血清刺激的睫状体装配/分解测定已经在解决睫状动力学中感兴趣的蛋白质的功能方面受到欢迎。 在这里,我们描述了转染人视网膜色素上皮细胞(RPE-1)和对转染细胞进行睫状体装配/分解测定的充分测试的方案。

【背景】初级纤毛是毛发样感觉细胞器,其在G 0 / G 1期出现,并且在细胞周期的S期之前分解(Tucker等, et al。,1979)。先前的研究已经证实,某些未转化的细胞类型(即,甚至是RPE-1细胞,3T3成纤维细胞和小鼠胚胎成纤维细胞[MEFs])可以被饿死以诱导静止和睫状体形成。随后的血清再次添加触发双相睫状体吸收,其在刺激后2小时和24小时达到峰值(Tucker等人,1979; Li等人,2011) 。该现象为文献中常用的血清刺激的睫状体组装/分解测定奠定了基础,以鉴定参与睫状体组装和拆卸的蛋白质(Pugacheva等人,2007; ...

Multicolor Stimulated Emission Depletion (STED) Microscopy to Generate High-resolution Images of Respiratory Syncytial Virus Particles and Infected Cells
Author:
Date:
2017-09-05
[Abstract]  Human respiratory syncytial virus (RSV) infection in human lung epithelial A549 cells induces filopodia, cellular protrusions consisting of F-actin, that extend to neighboring uninfected cells (Mehedi et al., 2016). High-resolution imaging via stimulated emission depletion (STED) microscopy revealed filamentous RSV particles along these filopodia, suggesting that filopodia facilitate RSV cell-to-cell spread (Mehedi et al., 2016). In this protocol, we describe how to fix, permeabilize, immunostain, and mount RSV-infected A549 cells for STED imaging. We show that STED increases resolution compared to confocal microscopy, which can be further improved by image processing using deconvolution software. [摘要]  人肺上皮A549细胞中的呼吸道合胞病毒(RSV)感染诱导丝状伪足,由F-肌动蛋白组成的细胞突起,延伸至相邻的未感染细胞(Mehedi等,2016)。 通过受激发射耗尽(STED)显微镜的高分辨率成像显示沿着这些丝状伪足的丝状RSV颗粒,表明丝状伪足有助于RSV细胞对细胞的扩散(Mehedi等,2016)。 在本协议中,我们描述如何修复,渗透,免疫染色和挂载RSV感染的A549细胞进行STED成像。 我们显示与共聚焦显微镜相比,STED增加了分辨率,可以通过使用去卷积软件的图像处理进一步改进。
【背景】RSV形成多形性病毒颗粒,其长度大约为直径约100nm,长度大约为10μm(Bachi和Howe,1973; Mehedi等,2016)。高分辨率光学显微技术是可视化RSV感染细胞和病毒颗粒之间相互作用的关键。在最近的一项研究中,我们使用超分辨率荧光显微镜来研究人肺上皮A549细胞中的RSV细胞对细胞的扩散。
  STED显微镜是超分辨率显微镜技术之一,已被开发以规避约200nm衍射屏障的光限制(Hell和Wichmann,1994; Westphal等人,2008)。 ...

Single-molecule RNA Fluorescence in situ Hybridization (smFISH) in Caenorhabditis elegans
Author:
Date:
2017-06-20
[Abstract]  Single-molecule RNA fluorescence in situ hybridization (smFISH) is a technique to visualize individual RNA molecules using multiple fluorescently-labeled oligonucleotide probes specific to the target RNA (Raj et al., 2008; Lee et al., 2016a). We adapted this technique to visualize RNAs in the C. elegans whole adult worm or its germline, which enabled simultaneous recording of nascent transcripts at active transcription sites and mature mRNAs in the cytoplasm (Lee et al., 2013 and 2016b). Here we describe each step of the smFISH procedure, reagents, and microscope settings optimized for C. elegans extruded gonads. [摘要]  单分子RNA荧光原位杂交(smFISH)是使用针对靶RNA特异性的多个荧光标记寡核苷酸探针来观察个体RNA分子的技术(Raj等人,2008; Lee等,2016a)。 我们调整了这种技术可视化线虫整个成虫或其种系中的RNA,其能够同时记录活跃转录位点的新生转录物和细胞质中的成熟mRNA(Lee等,2013和2016b)。 在这里,我们描述针对秀丽隐杆线虫挤压性腺优化的smFISH程序,试剂和显微镜设置的每个步骤。
【背景】smFISH能够在体内直接和精确地定量mRNA。 此外,通过复用smFISH探针,可以在同一细胞中同时测定多个RNA物种。 以前的出版物在线虫中使用了smFISH,但是这些研究使用了宽视野显微镜,其通常具有较低的空间分辨率并需要额外的图像处理(例如,图像去卷积)(Ji和van Oudenaarden,2012)。 在这里,我们描述了针对秀丽隐杆线虫组织优化的smFISH程序。 每个步骤都是详细的,包括使用共焦显微镜来获得精确的测量。 我们的协议最大限度地减少了样品与样品的变异性,并允许精确定量mRNA和新生转录物。

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