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Goat anti-Rat IgG (H+L) Cross-Adsorbed Secondary Antibody, Alexa Fluor 488

山羊抗大鼠IgG(H + L)次级抗体,Alexa Fluor 488

Company: Thermo Fisher Scientific
Catalog#: A11006
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Combination of Fluorescent in situ Hybridization (FISH) and Immunofluorescence Imaging for Detection of Cytokine Expression in Microglia/Macrophage Cells
Author:
Date:
2017-11-20
[Abstract]  Microglia and macrophage cells are the primary producers of cytokines in response to neuroinflammatory processes. But these cytokines are also produced by other glial cells, endothelial cells, and neurons. It is essential to identify the cells that produce these cytokines to target their different levels of activation. We used dual RNAscope® fluorescence in situ hybridization (FISH) and immunohistochemistry (IHC) techniques to visualize the mRNA expression pattern of pro- and anti-inflammatory cytokines in microglia/macrophages cells. Using these methods, we can associate one mRNA to specific cell types when combining with different cellular markers by immunofluorescence. Results from RNAscope® probes IL-1β, TNFα, TGFβ, IL-10 or Arg1, showed colocalization ... [摘要]  小神经胶质细胞和巨噬细胞是响应神经炎症过程的细胞因子的主要生产者。但是这些细胞因子也是由其他神经胶质细胞,内皮细胞和神经元产生的。鉴定产生这些细胞因子的细胞以靶向其不同水平的活化是至关重要的。我们使用双RNAscope荧光原位杂交(FISH)和免疫组织化学(IHC)技术来观察小胶质细胞/巨噬细胞中促炎细胞因子和抗炎细胞因子的mRNA表达模式细胞。使用这些方法,我们可以联合一个mRNA与特定的细胞类型时,通过免疫荧光与不同的细胞标志物结合。来自RNAscope探针的结果IL-1β,TNFα,TGFβ,IL-10或Arg1显示与小胶质细胞/巨噬细胞抗体的共定位。这些靶标探针显示出足够的灵敏度和特异性来检测mRNA表达。新的FISH检测技术结合免疫组化技术将有助于共同确定蛋白质和mRNA的定位,以及提供可靠的mRNA表达水平的量化。
【背景】mRNA原位杂交技术是一种有用的工具,其允许以细胞依赖性方式特异性和选择性标记脑切片中的RNA序列(Grabinski等人,2015 ...

Single-molecule Analysis of DNA Replication Dynamics in Budding Yeast and Human Cells by DNA Combing
Author:
Date:
2017-06-05
[Abstract]  The DNA combing method allows the analysis of DNA replication at the level of individual DNA molecules stretched along silane-coated glass coverslips. Before DNA extraction, ongoing DNA synthesis is labeled with halogenated analogues of thymidine. Replication tracks are visualized by immunofluorescence using specific antibodies. Unlike biochemical and NGS-based methods, DNA combing provides unique information on cell-to-cell variations in DNA replication profiles, including initiation and elongation. Finally, this assay can be used to monitor the effect of DNA lesions on fork progression, arrest and restart. [摘要]  DNA梳理方法允许在沿着硅烷涂覆的玻璃盖玻片拉伸的单个DNA分子的水平上分析DNA复制。在DNA提取前,进行的DNA合成用胸苷的卤化类似物标记。使用特异性抗体通过免疫荧光可视化复制轨迹。与生物化学和基于NGS的方法不同,DNA梳理提供了DNA复制谱中细胞间细胞变化的独特信息,包括引发和延长。最后,该测定可用于监测DNA损伤对叉进展,停止和重新启动的影响。

背景 在称为复制起点的真核染色体上的数千个位点处启动DNA合成。原始激活遵循由检查点激酶和染色质的表观遗传修饰(Prioleau和MacAlpine,2016)控制的定义良好的复制计时程序。复制叉在正常S阶段经常停顿。叉停止是由多个事件引起的,例如DNA损伤,紧密结合的蛋白质复合物和高表达基因的转录(Tourriere和Pasero 2007; Zeman and Cimprich,2013)。真核生物已经制定了不同的策略来应对这种复制压力,包括修复机制来重新启动捕获的叉子和激活休眠复制起源以抢救终末抓捕的叉。
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Whole-seed Immunolabeling of Arabidopsis Mucilage Polysaccharides
Author:
Date:
2017-06-05
[Abstract]  In addition to synthesizing and secreting copious amounts of pectic polymers (Young et al., 2008), Arabidopsis thaliana seed coat epidermal cells produce small amounts of cellulose and hemicelluloses typical of secondary cell walls (Voiniciuc et al., 2015c). These components are intricately linked and are released as a large mucilage capsule upon hydration of mature seeds. Alterations in the structure of minor mucilage components can have dramatic effects on the architecture of this gelatinous cell wall. The immunolabeling protocol described here makes it possible to visualize the distribution of specific polysaccharides in the seed mucilage capsule. [摘要]  除了合成和分泌大量的果胶聚合物(Young等人,2008)外,拟南芥种皮表皮细胞产生少量的二级纤维素和半纤维素细胞壁(Voiniciuc等,,2015c)。这些组分复杂连接,并在成熟种子水合时作为大胶囊释放。在较小的粘液组分的结构中的改变可以对该凝胶状细胞壁的结构产生显着的影响。这里描述的免疫标记方案使得可以可视化种子胶囊中特定多糖的分布。

背景 自从拟南芥种皮表皮细胞(Young等人,2008)第一次富含果胶的胶质综合免疫荧光分析以来,在这种特殊的细胞壁中已经检测到另外类型的多糖(Voinicucucum,等等。,2015a; 2015b和2015c)。为了平行处理更多的样本,我修改了原始方案(在1.5 ml微量离心管中执行; Young等人,2008; Harpaz-Saad等人,2011年)到24孔板格式。我建议用Pontamine S4B(一种比以前的污渍更具体的纤维素荧光染料)来重新研磨种子(Anderson等人,2010)。通过测试多个荧光团之间的串扰,并为图像采集和处理设定明确的指导,该方案产生可重复的粘液表型,可以可靠地解释。

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