| Generation of Gene Knockout and Gene Replacement with Complete Removal of Full-length Endogenous Transcript Using CRISPR-Trap
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Author:
Date:
2018-10-20
[Abstract] This protocol describes the application of the CRISPR-Trap from designing of the gene targeting strategy to validation of successfully edited clones that was validated on various human cell lines, among them human induced pluripotent stem cells (hiPSCs). The advantage of CRISPR-Trap over conventional approaches is the complete removal of any endogenous full-length transcript from the target gene. CRISPR-Trap is applicable for any target gene with no or little coding sequence in its first exon. Several human cell lines and different genes have so far been edited successfully with CRISPR-Trap.
[摘要] 该协议描述了CRISPR-Trap从设计基因靶向策略到验证成功编辑的克隆的应用，所述克隆在各种人细胞系上得到验证，其中人类诱导的多能干细胞（hiPSC）。 CRISPR-Trap优于常规方法的优点是从靶基因完全去除任何内源全长转录物。 CRISPR-Trap适用于在其第一个外显子中没有编码序列或编码序列很少的任何靶基因。 到目前为止，已经使用CRISPR-Trap成功编辑了几种人细胞系和不同基因。
【背景】CRISPR / Cas9技术的出现促进了基因敲除和基因编辑的基因组靶向。执行敲除的常规方法依赖于引入移码导致过早终止密码子（PTC），截短开放阅读框（ORF）以及随后通过无义介导的mRNA衰变（NMD）降解靶基因的转录物。 。这种方法的一个可能的缺陷是全长转录物，其可以逃避NMD并产生具有残余或甚至显性负功能的C末端截短蛋白。该协议提出了CRISPR-Trap，这是我们最近建立的一种方法（Reber et al。>，2018），成功编辑后将阻止从靶基因位点表达任何全长转录本（图1）。简而言之，这种方法针对CRISPR / ...
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| Dictyostelium Cultivation, Transfection, Microscopy and Fractionation
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Author:
Date:
2015-06-05
[Abstract] The real time visualisation of fluorescently tagged proteins in live cells using ever more sophisticated microscopes has greatly increased our understanding of the dynamics of key proteins during fundamental physiological processes such as cell locomotion, chemotaxis, cell division and membrane trafficking. In addition the fractionation of cells and isolation of organelles or known compartments can often verify any subcellular localisation and the use of tagged proteins as bait for the immunoprecipitation of material from cell fractions can identify specific binding partners and multiprotein complexes thereby helping assign a function to the tagged protein. We have successfully applied these techniques to the Dictyostelium discoideum protein TSPOON that is part of an ancient ...
[摘要] 使用更复杂的显微镜，活细胞中荧光标记的蛋白质的实时可视化大大增加了我们对基本生理过程如细胞运动，趋化性，细胞分裂和膜运输过程中关键蛋白质动力学的了解。此外，细胞的分级和分离细胞器或已知的隔室通常可以验证任何亚细胞定位，并且使用标记的蛋白质作为诱饵用于来自细胞部分的物质的免疫沉淀可以鉴定特异性结合配偶体和多蛋白复合物，从而有助于赋予功能标记蛋白。我们已经成功地将这些技术应用于作为古代异构六聚体膜转运复合物的一部分的盘基网柄菌discoideum蛋白TSPOON（Hirst等，2013）。 ...
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