| Method for Multiplexing CRISPR/Cas9 in Saccharomyces cerevisiae Using Artificial Target DNA Sequences
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Author:
Date:
2017-09-20
[Abstract] Genome manipulation has become more accessible given the advent of the CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) editing technology. The Cas9 endonuclease binds a single stranded (single guide) RNA (sgRNA) fragment that recruits the complex to a corresponding genomic target sequence where it induces a double stranded break. Eukaryotic repair systems allow for the introduction of exogenous DNA, repair of existing mutations, or deletion of endogenous gene products. Targeting of Cas9 to multiple genomic positions (termed ‘multiplexing’) is achieved by the expression of multiple sgRNAs within the same nucleus. However, an ongoing concern of the CRISPR field has been the accidental targeting of Cas9 to alternative (‘off-target’) DNA locations within a genome. We ...
[摘要] 鉴于CRISPR（集群定期间隔短回归重复）编辑技术的出现，基因组操纵变得更加易于使用。 Cas9核酸内切酶将募集复合物的单链（单向导）RNA（sgRNA）片段结合到相应的基因组靶序列，引发双链断裂。真核修复系统允许引入外源DNA，修复现有突变或内源基因产物的缺失。通过在同一核内表达多个sgRNA来实现Cas9对多个基因组位置的定位（称为“多重”）。然而，CRISPR领域的持续关注是将Cas9意外地定位到基因组内的替代（“脱靶”）DNA位置。我们将安装的人造Cas9靶序列的使用（称为人造基因座上的Cas9复制）描述为允许（i）与单个sgRNA复用的酵母基因组中的用途; （ii）减少/消除可能的脱靶效应，以及（iii）精确控制预定目标序列的放置。
【背景】CRISPR（集群定期间隔回归重复）机制已经在原核生物中演变为具有很高精度编辑任何基因组的能力的原始适应性免疫系统（Jinek等，2012; Sorek等，2013）。这种生物技术需要使用来自化脓性链球菌（或othologous物种）的内切核酸酶（Cas9），单个RNA'引导'序列和外源供体DNA（如果需要）。仅在短短几年内，CRISPR / ...
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| Large-scale Phenotypic Profiling of Gene Deletion Mutants in Candida glabrata
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Author:
Date:
2015-07-20
[Abstract] Here, we describe a method enabling the phenotypic profiling of genome-scale deletion collections of fungal mutants to detect phenotypes for various stress conditions. These stress conditions include among many others antifungal drug susceptibility, temperature-induced and osmotic as well as heavy metal or oxidative stress. The protocol was extensively used to phenotype a collection of gene deletion mutants in the human fungal pathogen Candida glabrata (C. glabrata) (Schwarzmüller et al., 2014).
[摘要] 在这里，我们描述了一种使表型分析的基因组规模删除集合的真菌突变体检测表型的各种应力条件的方法。 这些胁迫条件包括许多其它抗真菌药物敏感性，温度诱导和渗透以及重金属或氧化应激。 该方案广泛用于表达人真菌病原体光滑假丝酵母（ glabrata ）中基因缺失突变体的集合（Schwarzmüller等人 >，2014）。
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