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Agarose S

琼脂糖S

Company: Wako Pure Chemical Industries
Catalog#: 318-01195
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Efficient AAV-mediated Gene Targeting Using 2A-based Promoter-trap System
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Date:
2016-12-20
[Abstract]  Adeno-associated virus (AAV)-based targeting vectors have 1-4-log higher gene targeting efficiencies compared with plasmid-based targeting vectors. The efficiency of AAV-mediated gene targeting is further increased by introducing a promoter-trap system into targeting vectors. In addition, we found that the use of ribosome-skipping 2A peptide rather than commonly used internal ribosome entry site (IRES) in the promoter-trap system results in significantly higher AAV-mediated gene targeting efficiencies (Karnan et al., 2016). In this protocol, we describe the procedures for AAV-mediated gene targeting exploiting 2A for promoter trapping, including the construction of a targeting vector based on the platform plasmid pAAV-2Aneo or pAAV-2Aneo v2, production of AAV particles, infection ... [摘要]  与基于质粒的靶向载体相比,基于腺相关病毒(AAV)的靶向载体具有1-4对较高的基因靶向效率。 通过将启动子捕获系统引入靶向载体中,AAV介导的基因靶向的效率进一步增加。 此外,我们发现使用核糖体跳跃2A肽而不是通常使用的内部核糖体进入位点(IRES)在启动子捕获系统中导致显着更高的AAV介导的基因靶向效率(Karnan等,2016)。 在该方案中,我们描述了AAV介导的基因靶向开发2A用于启动子捕获的程序,包括基于平台质粒pAAV-2Aneo或pAAV-2Aneo v2的靶向载体的构建,AAV颗粒的产生,细胞感染 基于AAV的靶向载体,以及基因靶向细胞克隆的分离和验证。
【背景】以前在其他方案中描述了AAV介导的基因靶向的程序(对应于本方案的BG部分)(Kohli等人,2004; Rago等人,2007; Khan等人,2011; Howes and Schofield ,2015)。 然而,该方案提供了如何使用基于2A的启动子捕获系统首次进行AAV介导的基因靶向的详细描述。

Identification of Proteins Interacting with Genomic Regions of Interest in vivo Using Engineered DNA-binding Molecule-mediated Chromatin Immunoprecipitation (enChIP)
Author:
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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