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Triton X-100

Company: Sigma-Aldrich
Catalog#: x100-500ML
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Superresolution Microscopy of Drosophila Indirect Flight Muscle Sarcomeres
Author:
Date:
2020-06-20
[Abstract]  Sarcomeres are extremely highly ordered macromolecular assemblies where proper structural organization is an absolute prerequisite to the functionality of these contractile units. Despite the wealth of information collected, the exact spatial arrangement of many of the H-zone and Z-disk proteins remained unknown. Recently, we developed a powerful nanoscopic approach to localize the sarcomeric protein components with a resolution well below the diffraction limit. The ease of sample preparation and the near crystalline structure of the Drosophila flight muscle sarcomeres make them ideally suitable for single molecule localization microscopy and structure averaging. Our approach allowed us to determine the position of dozens of H-zone and Z-disk proteins with a quasi-molecular, ... [摘要]  [摘要] 肉瘤是高度​​有序的大分子组装体,其中适当的结构组织是这些可收缩单位功能的绝对前提。尽管收集到大量信息,但许多H区和Z盘蛋白的确切空间排列最近未知的是,我们开发了一种强大的纳米方法来定位肌氨酸蛋白成分,其分辨率远低于衍射极限。样品制备的简便性和果蝇的近晶体结构 飞行肌肉瘤使其非常适合单分子定位显微镜检查和结构平均。我们的方法使我们能够以大约5-10 nm的准分子定位精度确定数十个H区和Z盘蛋白的位置。下文所述的协议为制备用于dSTORM成像的单个肌原纤维提供了一种简便且可重现的方法,此外还包括对定制的免费提供的软件工具箱的深入描述,以处理和定量分析原始定位数据。

[背景 ] 肉瘤的结构已通过X射线晶体学以及各种EM方法进行了详细研究,从而形成了来自许多物种的细丝和粗丝的准原子模型。尽管如此,这些检查取得了很好的结果对于肌动蛋白-肌球蛋白重叠区的了解,I带和H区复合物的空间排列仍是未知之数。荧光超分辨率显微镜(也称为纳米显微镜)的最新进展提供了远低于衍射极限的空间分辨率。值得注意的是,单分子定位显微镜(SMLM)可以非常高精度地提供多蛋白复合物的定位图,实际上达到了单个蛋白的大小分辨率(Sigal et al。,2018)。

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Zebrafish Bacterial Infection Assay to Study Host-Pathogen Interactions
Author:
Date:
2020-03-05
[Abstract]  The study of host-pathogen interactions has improved our understanding of both pathogenesis and the response of the host to infection, including both innate and adaptive responses. Neutrophils and macrophages represent the first line of innate host defense against any infection. The zebrafish is an ideal model to study the response of these cells to a variety of pathogens. Zebrafish possess both neutrophils and macrophages exhibiting similar defense mechanisms to their human counterparts. The transparency of zebrafish embryos greatly facilitates in vivo tracking of infection dynamics in a non-invasive manner at high-resolution using labelled pathogens, while immune cells can also be labelled transgenically to enable even more in-depth analysis. Here we describe a procedure for ... [摘要]  

[ 文摘动作 ] 宿主-病原体相互作用的研究已经提高了我们既发病机制和宿主对INFE响应的理解ction,包括先天性和适应性应答。中性粒细胞和巨噬细胞是抵抗任何感染的先天宿主防御的第一线。斑马鱼是研究这些细胞对多种病原体反应的理想模型。斑马鱼同时具有嗜中性粒细胞和巨噬细胞表现出荷兰国际集团类似的防御机制,它们人的相应。斑马鱼胚胎的透明性极大地促进了体内 使用标记的病原体以非侵入性的方式以高分辨率跟踪感染动态,同时还可以通过转基因方式标记免疫细胞,以进行更深入的分析。在这里,我们描述了一种方法,用于执行一个在斑马鱼中的细菌感染测定胚胎使用荧光标记的大肠杆菌细菌和演示感染动力学的监测和定量。值得注意的是,该程序有助于理解对驱动先天免疫应答至关重要的基因的功能作用。

[ 背景 ] 宿主-病原体相互作用的研究是重要的是了解疾病的发病机理,也为有效治疗药物的开发。需要确定宿主和病原体的多个方面,以确定宿主中的潜在危险因素和病原体中的关键毒力因素。先天性免疫是抵抗感染的第一道防线,它会引发一连串的反应,包括炎症,中和和适应性免疫系统各组分的募集(Akira et ...

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