| Gene Dosage Experiments in Enterobacteriaceae Using Arabinose-regulated Promoters
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Author:
Date:
2017-07-20
[Abstract] This protocol is used to assay the effect of protein over-expression on fitness of E. coli. It is based on a plasmid expression of a protein of interest from an arabinose-regulated pBAD promoter followed by the measurement of the intracellular protein abundance by Western blot along with the measurement of growth parameters of E. coli cell expressing this protein.
[摘要] 该方案用于测定蛋白质过表达对E适应度的影响。大肠杆菌。 它基于来自阿拉伯糖调节的pBAD启动子的目的蛋白的质粒表达，随后通过Western印迹测量细胞内蛋白质丰度以及E的生长参数的测量。 表达该蛋白质的大肠杆菌细胞。
【背景】基因剂量实验对于了解蛋白质过表达对健康的影响和确定蛋白质丰度的最佳水平至关重要。 几个基因即使在非常低的水平表达也是有毒的。 因此，重要的是从紧密调节的启动子表达蛋白质以使渗漏表达最小化。 在这里，我们已经阐明了在良好表征的阿拉伯糖诱导的pBAD启动子下的蛋白质表达的条件，并且设计了用于测量E细胞内丰度和适应度的方案。 含有过表达质粒的大肠杆菌细胞。
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| T Follicular Helper Cell Coculture Assay
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Author:
Date:
2014-01-05
[Abstract] T follicular helper (Tfh) cells constitute a distinct subset of CD4+ T cells specialized in providing help to B cells in germinal centers. Phenotypically, Tfh cells are characterized by their high expression of the chemokine receptor CXCR5 that allows their migration into B cell follicles as well as high expression of PD-1, BTLA, the co-stimulatory molecules ICOS and SLAM and the transcription factors BCL6 and cMaf. Tfh cells are the main producers of IL-21 as well as other cytokines like IL-4 and IL-10 critical for B cell survival and differentiation. Tfh cells drive somatic hypermutation and the generation of long-lived memory B cells and plasma cells having an essential role in the development of protective immunity. Developing a coculture system to measure the effects of ...
[摘要] T滤泡辅助（Tfh）细胞构成专门提供对生发中心中的B细胞的帮助的CD4 + T细胞的不同亚群。表型上，Tfh细胞的特征在于其高趋化因子受体CXCR5的表达，其允许它们迁移到B细胞滤泡以及PD-1，BTLA，共刺激分子ICOS和SLAM以及转录因子BCL6和cMaf的高表达。 Tfh细胞是IL-21以及其他细胞因子如IL-4和IL-10对B细胞存活和分化关键的主要生产者。 Tfh细胞驱动体细胞超突变和长寿记忆B细胞和浆细胞的产生在保护性免疫的发展中具有重要作用。开发共培养系统以测量Tfh细胞介导的B细胞帮助的效果是非常感兴趣的进一步我们的Tfh-B细胞相互作用的理解，并允许操纵文化条件调查潜在影响不同的微环境信号或配体/受体相互作用可能对Tfh细胞功能。
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| Generation of Polyclonal Specific Antibodies
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Author:
Date:
2013-06-05
[Abstract] Generation of antibodies specific for a protein of interest is a common method in many disciplines. This protocol details the steps in production of a polyclonal antibody in rabbits using a bacterially expressed fusion protein as an antigen. The protocol is generated based on data presented in Wirschell et al.(2013).
[摘要] 对感兴趣的蛋白质特异性的抗体的产生是许多学科中的常见方法。 该方案详述了使用细菌表达的融合蛋白作为抗原在兔中产生多克隆抗体的步骤。 该协议基于Wirschell等人（2013）中提供的数据生成。
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