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Deoxycholic Acid Sodium Salt Monohydrate

脱氧胆酸钠盐一水合物

Company: NACALAI TESQUE
Catalog#: 10712-12
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Phos-tag Immunoblot Analysis for Detecting IRF5 Phosphorylation
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Date:
2017-05-20
[Abstract]  While the activation of the transcription factor interferon regulatory factor 5 (IRF5) is critical for the induction of innate immune responses, it also contributes to the pathogenesis of the autoimmune disease systemic lupus erythematosus (SLE). IRF5 phosphorylation is a hallmark of its activation in the Toll-like receptor (TLR) pathway, where active IRF5 induces type I interferon and proinflammatory cytokine genes. By using the phosphate-binding molecule Phos-tag, without either radioisotopes or phospho-specific antibodies, the protocol described here enables detection of the phosphorylation of both human and murine IRF5, as well as that of other proteins. [摘要]  虽然转录因子干扰素调节因子5(IRF5)的激活对于诱导先天免疫应答至关重要,但也有助于自身免疫疾病系统性红斑狼疮(SLE)的发病机制。 IRF5磷酸化是其在Toll样受体(TLR)途径中的活化的标志,其中活性IRF5诱导I型干扰素和促炎细胞因子基因。通过使用不含放射性同位素或磷酸特异性抗体的磷酸结合分子磷酸标签,本文所述的方案可以检测人和鼠IRF5以及其他蛋白质的磷酸化。

背景 在TLR-MyD88途径中,IRF5通过翻译后修饰如泛素化和磷酸化被激活,然后活性IRF5转位到细胞核中并诱导其靶基因(Takaoka等人,2005; Balkhi ,2008; Tamura等人,2008; Hayden and Ghosh,2014)。关于IRF5在SLE中的激活状态,已经报道了IRF5积累在SLE患者的单核细胞核中(Stone等人,2012)。此外,我们最近在SLE鼠模型中显示,IRF5超激活(例如,升高的磷酸化)导致SLE样疾病的发展(Ban 等人,,2016年)。因此,分析IRF5的激活状态对于研究SLE以及先天免疫应答是重要的。磷酸化是IRF5激活的核心,因为许多研究已经通过定点诱变和/或质谱法揭示了IRF5的功能性磷酸化位点(Barnes等人,2002; Lin et al。等人,2005; ...

Identification of Proteins Interacting with Genomic Regions of Interest in vivo Using Engineered DNA-binding Molecule-mediated Chromatin Immunoprecipitation (enChIP)
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Date:
2014-05-20
[Abstract]  Elucidation of molecular mechanisms of genome functions requires identification of molecules interacting with genomic regions of interest in vivo. To this end, it is useful to isolate the target regions retaining molecular interactions. We established locus-specific chromatin immunoprecipitation (ChIP) technologies consisting of insertional ChIP (iChIP) and engineered DNA-binding molecule-mediated ChIP (enChIP) for isolation of target genomic regions (Hoshino and Fujii, 2009; Fujita and Fujii, 2011; Fujita and Fujii, 2012; Fujita and Fujii, 2013a; Fujita and Fujii, 2013b; Fujita et al., 2013). Identification and characterization of molecules interacting with the isolated genomic regions facilitates understanding of molecular mechanisms of functions of the target genome ... [摘要]  阐明基因组功能的分子机制需要在体内鉴定与感兴趣的基因组区域相互作用的分子。为此,分离保持分子相互作用的靶区是有用的。我们建立由插入ChIP(iChIP)和工程化的DNA结合分子介导的ChIP(enChIP)组成的基因组特异性染色质免疫沉淀(ChIP)技术用于靶基因组区域的分离(Hoshino和Fujii,2009; Fujita和Fujii,和Fujii,2012; Fujita和Fujii,2013a; Fujita和Fujii,2013b; Fujita等人,2013)。与分离的基因组区域相互作用的分子的鉴定和表征有助于理解靶基因组区域的功能的分子机制。在这里,我们描述enChIP,其中工程化的DNA结合分子,如锌指蛋白,转录激活样(TAL)蛋白和催化失活的Cas9(dCas9)加上小指南RNA(gRNA),被用于亲和纯化靶基因组区。 enChIP的方案如下所示:
1。产生锌指蛋白,TAL或dCas9加gRNA以识别感兴趣的基因组区域中的DNA序列。
2。工程化的DNA结合分子与标签和核定位信号(NLS)融合,并在待分析的细胞中表达。如果需要,所得细胞被交联,并裂解,DNA被片段化。将包括工程化DNA结合分子的复合物进行亲和纯化,例如免疫沉淀。分离的复合物保留分子与感兴趣的基因组区域相互作用。 ...

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