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8孔条

Company: NIPPON Genetics
Catalog#: FG-028DC
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Targeted Mutagenesis Using RNA-guided Endonucleases in Mosses
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Date:
2017-06-20
[Abstract]  RNA-guided endonucleases (RGENs) have been used for genome editing in various organisms. Here, we demonstrate a simple method for performing targeted mutagenesis and genotyping in a model moss species, Physcomitrella patens, using RGENs. We also performed targeted mutagenesis in a non-model moss, Scopelophilla cataractae, using a similar method (Nomura et al., 2016), indicating that this experimental system could be applied to a wide range of mosses species. [摘要]  RNA引导的核酸内切酶(RGENs)已被用于各种生物体的基因组编辑。 在这里,我们展示了使用RGENs在模型苔藓种类小立碗藓中进行定向诱变和基因分型的简单方法。 我们还使用类似的方法(Nomura等,2016)在非模型苔藓,Scopelophilla白内障中进行了定向诱变,表明该实验系统可以应用于广泛的苔藓物种。
【背景】使用来自适应性免疫系统的RNA引导内切核酸酶(RGEN)的靶向诱变,使用细菌CRISPR(定期间隔的回文重复序列)/ Cas(CRISPR相关)系统近年来已经急剧发展。在该方法中,使用源自化脓性链球菌的Cas9核酸内切酶和人工设计的单链导向RNA(sgRNA)。 Cas9-sgRNA复合物识别原始相邻基序(5'-NGG-3'),并在目标位点上游3 bp切割(Jinek等,2012)。随后,在DNA的双链断裂(DSB)修复过程中发生随机插入和/或缺失突变。使用这些RGEN的定向诱变是有效的以及成本和时间有效的,它已被用于各种生物体(包括许多植物物种)的基因组编辑。在这里,我们在青苔中建立了使用RGEN进行靶向诱变的方案,并在模型和非模型物种中进行了证明(Nomura等,2016)。

Infection of Human Hepatocyte-chimeric Mice with HBV and in vivo Treatment with εRNA
Author:
Date:
2016-01-20
[Abstract]  Hepatitis B virus (HBV) can cause both acute and chronic disease in human liver with potentially high risk of cirrhosis and liver cancer. The host range of non-human primates susceptible to this virus is limited. Therefore, experimental studies with human hepatocyte-chimeric mice provide an invaluable source of information regarding the biology and pathogenesis of HBV. This section describes the protocol for infection of the human hepatocyte-chimeric mice with HBV. In addition, it has recently been shown that HBV replication can be suppressed by exogenous expression of viral epsilon RNA (εRNA; Sato et al., 2015), which serves as an encapsidation signal (Bartenschlager et al., 1992). Based upon this finding, we also describe the protocol for the liposome-mediated delivery ... [摘要]  乙型肝炎病毒(HBV)可引起人类肝脏的急性和慢性疾病,具有潜在的肝硬化和肝癌的高风险。 对这种病毒敏感的非人灵长类动物的宿主范围有限。 因此,用人肝细胞嵌合小鼠的实验研究提供了关于HBV的生物学和发病机理的非常宝贵的信息来源。 本节描述了用HBV感染人肝细胞嵌合小鼠的方案。 此外,最近已经表明,HBV复制可以通过作为壳体化信号的病毒ε-RNA(εRNA; Sato等人,2015)的外源表达来抑制(Bartenschlager et al。,1992)。 基于这一发现,我们还描述了脂质体介导的在这些嵌合小鼠中将编码εRNA的质粒递送至肝的方案。

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