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Fisher BioReagentsTM Bovine Serum Albumin, Fraction V, Heat Shock Treated

公司名称: Fisher Scientific
产品编号: BP1600
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Quantitative Live-cell Reporter Assay for Noncanonical Wnt Activity
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Date:
2018-03-20
[Abstract]  Noncanonical Wnt signaling functions independently of the β-catenin pathway to control diverse developmental processes, and dysfunction of the pathway contributes to a number of human pathological conditions, including birth defects and metastatic cancer. Progress in the field, however, has been hampered by the scarcity of functional assays for measuring noncanonical Wnt signaling activity. We recently described the Wnt5a-Ror-Kif26b (WRK) reporter assay, which directly monitors a post-transcriptional regulatory event in noncanonical Wnt signaling. In this protocol, we describe the generation ... [摘要]  非经典Wnt信号独立于β-catenin途径发挥功能来控制不同的发育过程,并且该途径的功能障碍导致许多人类病理状况,包括出生缺陷和转移性癌症。 然而,该领域的进展一直受到用于测量非典型Wnt信号活性的功能测定的稀缺性的阻碍。 我们最近描述了Wnt5a-Ror-Kif26b(WRK)记者测定法,其直接监测非典型Wnt信号传导中的转录后调节事件。 在该协议中,我们描述了通过流式细胞术检测和测量活细胞中Wnt5a信号传导活性的稳定GFP-Kif26b报告细胞系和定量记者测定法的产生。

【背景】从历史上看,转录报告基因检测方法促进了主要信号通路的描述。具体来说,β-连环蛋白依赖性萤光素酶或基于GFP的转录报道基因有助于阐明经典Wnt /β-连环蛋白途径的分子机制(Korinek et al。,1997; Fuerer and Nusse,2010)。尽管已经描述了许多基于JNK依赖性转录的非经典Wnt信号传导报道分子,但是这些转录应答是否是非经典Wnt信号传导的主要或次要仍不清楚(Veeman等,2003; Nishita等,等,2010; Ohkawara和Niehrs,2011)。此外,用于实时检测非转录性Wnt5a-Ror信号传导事件的记者尚未获得。 ...

RNA Cap Methyltransferase Activity Assay
Author:
Date:
2018-03-20
[Abstract]  Methyltransferases that methylate the guanine-N7 position of the mRNA 5’ cap structure are ubiquitous among eukaryotes and commonly encoded by viruses. Here we provide a detailed protocol for the biochemical analysis of RNA cap methyltransferase activity of biological samples. This assay involves incubation of cap-methyltransferase-containing samples with a [32P]G-capped RNA substrate and S-adenosylmethionine (SAM) to produce RNAs with N7-methylated caps. The extent of cap methylation is then determined by P1 nuclease digestion, thin-layer chromatography (TLC), and phosphorimaging. ... [摘要]  甲基化mRNA 5'帽结构的鸟嘌呤-N7位置的甲基转移酶在真核生物中普遍存在并且通常由病毒编码。这里我们提供生物样品的RNA帽甲基转移酶活性的生化分析的详细方案。该测定包括将含有帽 - 甲基转移酶的样品与[32 P] G-加帽的RNA底物和S-腺苷甲硫氨酸(SAM)温育以产生具有N7-甲基化帽的RNA。然后通过P1核酸酶消化,薄层色谱(TLC)和磷成像确定帽甲基化的程度。此处描述的方案包括用于产生[32 P] G-加帽的RNA底物和用于从哺乳动物细胞制备核和细胞质提取物的附加步骤。该分析也适用于分析其他生物样品(包括重组蛋白制剂和来自分析分离和免疫沉淀/下拉实验的级分)的帽甲基转移酶活性。

【背景】mRNA的5'端的N7-甲基鸟苷帽是适当的真核mRNA加工,定位和翻译所必需的修饰。 ...

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