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MicroloaderTM, tip for filling Femtotips and other glass microcapillaries, sterile, 0.5 – 20 µL, 100 mm, light gray

Company: Eppendorf
Catalog#: 930001007
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Infection of Caenorhabditis elegans with Vesicular Stomatitis Virus via Microinjection
Author:
Date:
2017-11-20
[Abstract]  Over the past 15 years, the free-living nematode, Caenorhabditis elegans has become an important model system for exploring eukaryotic innate immunity to bacterial and fungal pathogens. More recently, infection models using either natural or non-natural nematode viruses have also been established in C. elegans. These models offer new opportunities to use the nematode to understand eukaryotic antiviral defense mechanisms. Here we report protocols for the infection of C. elegans with a non-natural viral pathogen, vesicular stomatitis virus (VSV) through microinjection. We also describe how recombinant VSV strains encoding fluorescent or luciferase reporter genes can be used in conjunction with simple fluorescence-, survival-, and luminescence-based assays to ... [摘要]  在过去的15年中,线虫自由生活已经成为探索真核细菌和真菌病原体真核免疫的重要模型系统。 最近,使用天然或非天然线虫病毒的感染模型也已经在C中建立。线虫。 这些模型提供了使用线虫了解真核抗病毒防御机制的新机会。 在这里,我们报告感染的协议。 线虫与非天然病毒病原体,水泡性口炎病毒(VSV)通过显微注射。 我们还描述了编码荧光或萤光素酶报告基因的重组VSV毒株如何与简单的基于荧光,存活和发光的分析结合使用来鉴定宿主遗传背景,并对病毒感染有不同的易感性。

【背景】由于它的遗传易用性,体积小,文化价廉,透明的身体,自由生活的线虫秀丽隐杆线虫作为模式生物提供了许多优点。此外,C的易感性。线虫对人类多种细菌和真菌病原体的作用使得这种蠕虫成为研究微生物发病机制的有吸引力的系统(Zhang和Hou,2013; Cohen and Troemel,2015)。最近,发现了正义ssRNA奥赛病毒(OV)作为第一种天然的病毒病原体。线虫已经提示使用OV- C。 elegans 模型来定义线虫抗病毒防御机制(Felix等人,2011; Gammon,2017)。这些研究已经证明了线虫抗病毒RNA干扰途径组分如Dicer相关解旋酶1(DRH-1)在限制病毒复制中的明确作用(Ashe等人,2013)。

为了补充OV模型系统,我们最近报道了新一代病毒的产生。使用反义ssRNA水泡性口炎病毒(VSV)(Gammon等人,2017)的线虫模型。用VSV感染野生型(N2)蠕虫是致命的,虽然抗病毒反应(例如突变体,drh-1突变体)突变体缺陷会更快地感染感染(Gammon ...

Escherichia coli Infection of Drosophila
Author:
Date:
2017-05-05
[Abstract]  Following septic insults, healthy insects, just like vertebrates, mount a complex immune response to contain and destroy pathogens. The failure to efficiently clear bacterial infections in immuno-compromised fly mutants leads to higher mortality rates which provide a powerful indicator for genes with important roles in innate immunity. The following protocol is designed to reproducibly inject a known amount of non-pathogenic E. coli into otherwise sterile flies and to measure the survival of flies after infection. The protocol can be easily adapted to different types of bacteria. [摘要]  在败血症后,健康的昆虫就像脊椎动物一样,会发生复杂的免疫反应,以遏制和破坏病原体。在免疫损害的蝇突变体中未能有效地清除细菌感染导致更高的死亡率,这为在先天免疫中具有重要作用的基因提供了强有力的指标。以下协议被设计为可重复地注射已知量的非致病性E。大肠杆菌进入其他无菌苍蝇,并测量感染后苍蝇的存活率。该方案可以轻松适应不同类型的细菌。

背景 经典的感染实验包括口服感染果蝇(Chakrabarti等人,2016)或用浸在浓缩细菌溶液中的针(Romeo和Lemaitre,2008)。与这些方案不同,我们的实验程序允许我们确定感染部位,并精确控制注射到每只苍蝇中的细菌的剂量。这提供了均匀性和重复性,并且允许我们适应不同实验的细菌负荷(Akbar等人,2011和2016)。

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