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20x MOPS (3-morpholinopropane-1-sulfonic acid) gel running buffer

NuPAGE ® MOPS SDS运行缓冲液(20X)

公司名称: Thermo Fisher Scientific
产品编号: NP0001
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Screening Method for CRISPR/Cas9 Inhibition of a Human DNA Virus: Herpes Simplex Virus
Author:
Date:
2020-09-05
[Abstract]  The efficiency of cleavage of individual CRISPR/Cas9-sgRNAs remains difficult to predict based on the CRISPR target sequence alone. Different intracellular environments (dependent on cell type or cell cycle state for example) may affect sgRNA efficiency by altering accessibility of genomic DNA through DNA modifications such as epigenetic marks and DNA-binding proteins (e.g., histones) as well as alteration of the chromatin state of genomic DNA within the nucleus.

We recently reported a multi-step screening method for the identification of efficient sgRNAs targeting the ...
[摘要]  [摘要 ] 单独基于CRISPR靶序列仍难以预测单个CRISPR / Cas9-sgRNA的切割效率。不同的细胞内环境(例如,取决于细胞类型或细胞周期状态)可能会通过DNA修饰(例如表观遗传标记和DNA结合蛋白(例如组蛋白))和染色质状态的改变来改变基因组DNA的可及性,从而影响sgRNA效率。核内基因组DNA的标记。

我们recen TLY 报道的多步骤方法筛选用于有效sgRNAs靶向的识别的单纯疱疹病毒(HSV-1)的基因组,并报告为在潜对裂解病毒相抑制CRISPR-Cas9的差动机构。该协议中详述的筛选平台允许在无细胞系统中以及在病毒靶细胞(例如人包皮成纤维细胞)的背景下逐步测试切割效率,然后对CRISPR / sgRNA的作用进行功能测试病毒蛋白的表达,复制,和再活化。该策略可以容易地应用于其他靶细胞,例如多能干细胞衍生的人感觉神经元或其他人DNA病毒。

背景 ] 单纯疱疹病毒(HSV)是的一种嗜神经性DNA病毒疱疹病毒科家族引起终身和无法治愈感染在大多数人群的,并可能导致显著发病率和死亡率(Liesegang环等人,1989; Roizman 等人。,2013) ...

Selective Isolation of Retroviruses from Extracellular Vesicles by Intact Virion Immunoprecipitation
Author:
Date:
2018-09-05
[Abstract]  There exists a wide variety of techniques to isolate and purify viral particles from cell culture supernatants. However, these techniques vary greatly in ease of use, purity, yield and impact on viral structural integrity. Most importantly, it is becoming evident that secreted extracellular vesicles (EVs) co-purify with retroviruses using nearly all purification methods due to nearly indistinguishable biophysical characteristics such as size, buoyant density and nucleic acid content. Recently, our group has illustrated a means of isolating intact and highly enriched retroviral virions from ... [摘要]  存在多种从细胞培养上清液中分离和纯化病毒颗粒的技术。然而,这些技术在易用性,纯度,产量和对病毒结构完整性的影响方面差异很大。最重要的是,由于几乎无法区分的生物物理特征,例如大小,浮力密度和核酸含量,使用几乎所有纯化方法分泌的细胞外囊泡(EV)与逆转录病毒共同纯化变得明显。最近,我们小组已经阐明了一种利用针对Moloney鼠白血病病毒的病毒包膜糖蛋白的免疫沉淀方法从含有EV的细胞上清液中分离完整和高度富集的逆转录病毒病毒颗粒的方法(Renner et al。, 2018)。这种技术,我们称之为完整的病毒粒子免疫沉淀(IVIP),使我们能够表征这些逆转录病毒表面上表位的可及性,并评估病毒包膜中病毒编码的整合膜蛋白Glycogag(gPr80)的方向。该方案的正确实施使得能够快速,简单且可重复地制备完整且高度纯化的逆转录病毒颗粒,其没有可检测的EV污染物。

【背景】广泛使用的分离逆转录病毒的方法,如人类免疫缺陷病毒(HIV)和小鼠白血病病毒(MLV),包括沉淀,色谱,超滤,超速离心,以及各种其他粒子分离方法(评论在Nestola et al。,2015)。虽然每种技术都有其特定的优点,缺点和局限性,但所有方法的共同关注点是细胞分泌的细胞外囊泡(EV)的共同纯化。

EV构成由所有细胞类型分泌的膜衍生囊泡的异质群体(Yanez-Mo ...

Preparation of Cerebellum Granule Neurons from Mouse or Rat Pups and Evaluation of Clostridial Neurotoxin Activity and Their Inhibitors by Western Blot and Immunohistochemistry
Author:
Date:
2018-07-05
[Abstract]  Cerebellar Granule Neurons (CGN) from post-natal rodents have been widely used as a model to study neuronal development, physiology and pathology. CGN cultured in vitro maintain the same features displayed in vivo by mature cerebellar granule cells, including the development of a dense neuritic network, neuronal activity, neurotransmitter release and the expression of neuronal protein markers. Moreover, CGN represent a convenient model for the study of Clostridial Neurotoxins (CNT), most notably known as Tetanus and Botulinum neurotoxins, as they abundantly express both CNT ... [摘要]  来自产后啮齿动物的小脑颗粒神经元(CGN)已被广泛用作研究神经元发育,生理学和病理学的模型。 CGN体外培养维持成熟小脑颗粒细胞在体内显示的相同特征,包括发育致密的神经炎网络,神经元活动,神经递质释放和神经元的表达 蛋白质标记。 此外,CGN代表了梭菌神经毒素(CNT)研究的便利模型,最着名的是破伤风和肉毒杆菌神经毒素,因为它们大量表达CNT受体和神经元内基质, ie ,可溶性N-乙基马来酰亚胺 - 敏感因子激活蛋白受体(SNARE蛋白)。 在这里,我们描述了从出生后大鼠/小鼠获得高纯度CGN培养物的方案和用CNT中毒的简便方法。 我们还说明了评估CNT活性及其抑制的方便方法。

【背景】梭菌神经毒素(CNT)的大家族由破伤风神经毒素(TeNT)和肉毒杆菌神经毒素(BoNT)的多种变体形成,它们分别是破伤风和肉毒中毒的神经麻痹毒素(Schiavo et al。,2000; Johnson和Montecucco,2008; Rossetto et al。,2014)。 TeNT,七种BoNT血清型(BoNT / A至/ G)及其许多亚型是金属蛋白酶,通过切割SNARE蛋白(可溶性N-乙基马来酰亚胺敏感因子激活蛋白受体),三种必需蛋白质来阻断神经递质的释放而引起神经麻痹。控制突触小泡与突触前质膜的融合(Rossetto et al。,2014; ...

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