| A Novel Method to Construct Binary CRISPR Vectors for Plant Transformation by Single Round of PCR Amplification
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Author:
Date:
2021-04-05
[Abstract] CRISPR/Cas9 is an established and flexible tool for genome editing. However, most methods used to generate expression clones for the CRISPR/Cas9 are time-consuming. Hence, we have developed a one-step protocol to introduce sgRNA expression cassette(s) directly into binary vectors (Liu et al., 2020). In this approach, we have optimized the multiplex PCR to produce an overlapping PCR product in a single reaction to generate the sgRNA expression cassette. We also amplified two sgRNA expression cassettes through a single round of PCR. Then, the sgRNA expression cassette(s) is cloned into the binary vectors in a Gateway LR or Golden gate reaction. The system reported here provides a much more efficient and simpler procedure to construct expression clones for CRISPR/Cas9-mediated genome ...
[摘要] [摘要] CRISPR / Cas9是一种成熟且灵活的基因组编辑工具。但是，大多数用于生成CRISPR / Cas9表达克隆的方法都很耗时。因此，我们开发了一种将sgRNA表达盒直接引入二元载体的一步协议（Liu等人，2020年）。在这种方法中，我们优化了多重PCR，以在单个反应中产生重叠的PCR产物，从而生成sgRNA表达盒。我们还通过单轮PCR扩增了两个sgRNA表达盒。然后，在Gateway LR或Golden gate反应中将sgRNA表达盒克隆到二元载体中。本文报道的系统为构建用于CRISPR / Cas9介导的基因组编辑的表达克隆提供了更有效，更简单的程序。在此协议中，我们描述了使用此系统的详细分步说明。
[背景]乙acteria保卫针对病毒通过蛋白系统，由群集规则间隔开的短回文重复序列（CRISPR）中，CRISPR相关（CAS）蛋白质，CRISPR的RNA（crRNAs）和反式编码crRNA（tracrRNA）。现在，研究人员已经将其系统开发为用于靶向基因组编辑的关键工具。CRISPR –二元载体表达两个元素–具有靶序列的sgRNA（target-sgRNA）和Cas9蛋白–切割靶基因组区域。冯等人。（2013年）已经构建了网关载体，通过农杆菌介导的转化在植物中共表达Cas9和sgRNA ...
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| Preparation of Knockdown Transformants of Unicellular Charophycean Alga, Closterium peracerosum-strigosum-littorale Complex
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Author:
Date:
2016-05-20
[Abstract] To prepare the knockdown transformants of the Closterium peracerosum-strigosum-littorale (C. psl.) complex, particle bombardment was applied with a newly constructed vector (pSA0104) with an endogenous constitutive promoter fused to a DNA fragment corresponding to an antisense strand of a target gene. Using a hygromycin resistance gene (aph7”), hygromycin-resistant colonies were selected. After the second screening, integration of the vector into the genome was checked by PCR and the knockdown effect was evaluated by Western blotting using a specific antibody against the target protein.
[摘要] 为了制备鬼臼藓藻（Clonsterium peracerosum-strigosum-littorale）复合物的敲低转化体，用新构建的载体（pSA0104）应用粒子轰击，所述载体具有内源性 组成型启动子，其与对应于靶基因的反义链的DNA片段融合。 使用潮霉素抗性基因（ aph7"）选择潮霉素抗性菌落。 在第二次筛选后，通过PCR检查载体到基因组中的整合，并使用针对靶蛋白的特异性抗体通过蛋白质印迹评估敲低效应。
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