{{'Search' | translate}}
 

SIGMAFAST BCIP®/NBT

SIGMAFASTTMBCIP® 20/ NBT

公司名称: Sigma-Aldrich
产品编号: B5655
Bio-protocol()
Company-protocol()
Other protocol()

Infection of Nicotiana benthamiana Plants with Potato Virus X (PVX)
Author:
Date:
2016-12-20
[Abstract]  Potato Virus X (PVX) is the type member of Potexvirus genus, a group of plant viruses with a positive-strand RNA genome (~6.4 kb). PVX is able to establish compatible infections in Nicotiana benthamiana, a commonly used host in plant virology, leading to mild symptoms, such as chlorotic mosaic and mottling. PVX has been widely used as a viral vector for more than two decades (Chapman et al., 1992; Baulcombe et al., 1995; Aguilar et al., 2015). It provides a feasible means for the systemic expression in plants of heterologous proteins, such ... [摘要]  马铃薯病毒X(PVX)是Potexvirus属(一组具有正链RNA基因组(〜6.4kb)的植物病毒)的类型成员。 PVX能够在烟草烟草(Nicotiana benthamiana)中建立相容的感染,这是常用于植物病毒学的宿主,导致轻度症状,如褪色马赛克和斑驳。 PVX已经被广泛用作病毒载体二十多年(Chapman等人,1992; Baulcombe等人,1995; Aguilar等人。它为异源蛋白质植物中的全身表达提供了可行的手段,例如无毒性因子,具有药理学性质的蛋白质,等等(Hammond-Kosack等人, 1995; Gleba等人,2014),并且还作为通过病毒诱导的基因沉默(VACS)(Lacomme和Chapman,2008)帮助解释植物中基因功能的工具。摩擦(A)和农用过滤(B)的两种不同的方案,即允许PVX在N中的有效乘法和传播。本文详细描述本文。摩擦方法需要先前感染的液体,并且通过诱导对叶组织的机械损伤来实现感染,从而允许病毒颗粒穿透植物表面。农杆菌过滤需要先前修饰的农杆菌携带并将PVX序列递送到植物细胞中。将土壤杆菌生长直至饱和,并用注射器将其浸入植物组织中建立感染。这两种方法中的任何一种都可以成功应用,选择应主要基于材料和时间的可用性,但建议在使用嵌合病毒时使用农杆菌滤过。

背景 ...

INF-gamma Release ELISpot Assay
Author:
Date:
2012-03-20
[Abstract]  IFN-γ (Interferon-gamma) is produced mainly by activated T cells and NK cells. Production of IFN-γ (Interferon-gamma) by helper T cells as well as cytotoxic T cells is a hallmark of the TH1-type phenotype, thus, high-level production of IFN-γ (Interferon-gamma) is typically associated with effective host defense against intracellular pathogens. The Enzyme-Linked ImmunoSpot (ELISpot) assay is commonly used to assess the function of antigen specific T cells by detecting IFN-γ release. The ELISpot assay is a very sensitive immunoassay, allowing the detection of a secreted cytokine at the single ... [摘要]  IFN-γ(干扰素-γ)主要产生于激活的T细胞和NK细胞。TH1型响应的特点是通过辅助T细胞和细胞毒T细胞产生IFN-γ,所以高水平IFN-γ的产生是由于寄主应对细胞内的病原体产生了有效的防御。酶联免疫斑点法通常用于评估抗原特异的T细胞的功效,即检测IFN-γ的释放。酶联免疫斑点法是一种非常灵敏的免疫检测方法,它可以在单细胞水平检测细胞因子的分泌。酶联免疫斑点法是最灵敏的细胞检测方法之一,它检测的灵敏度可以达到1:100000个细胞。依赖于化学物质的分析,酶联免疫斑点分析可以比传统的ELISA灵敏20到200倍。

产品评论