相关实验视频

Updated: Jun 13, 2025

Pooled CRISPR-Based Genetic Screens in Mammalian Cells

Pooled CRISPR-Based Genetic Screens in Mammalian Cells

Published on: September 4, 2019

克里斯普尔基因组和表观基因组工程改善了功能丧失的遗传查方法

Jannis Stadager¹, Chiara Bernardini², Laura Hartmann³

¹University Stuttgart, Department of Molecular Biochemistry, Allmandring 31, 70569 Stuttgart, Germany.

Cell reports methods

|June 11, 2025

概括

克里斯普基因通过结合抑制和裂变来增强功能丧失 (LOF) 屏幕的基因编辑,提高效率和可复制性. 这种先进的CRISPR技术克服了基因型-表型研究现有方法的局限性.

科学领域:

分子生物学分子生物学
遗传学是一个遗传学.
细胞生物学细胞生物学

背景情况:

克里斯普尔-Cas9技术使得大规模的功能丧失 (LOF) 屏幕能够进行基因型到表型分析.
目前的CRISPR方法面临的挑战是编辑效率低下和未被扰乱的基因,导致噪音数据.
现有的CRISPR淘汰 (CRISPRko),CRISPR干扰 (CRISPRi) 和CRISPRoff等系统在抑制具有挑战性的目标方面存在局限性.

研究的目的:

引入CRISPR基因和表观基因工程 (CRISPRgenee),以提高LOF查效率和可重复性.
开发一种新的CRISPR系统,可以同时抑制和分裂同一细胞内的目标基因.
在大型屏幕上提高基因型对表型赋值的准确性和可靠性.

主要方法:

克里斯普基因利用两个特定的单导向RNAs (sgRNAs) 来实现同时的基因抑制和分裂.
该系统与传统的CRISPRko,CRISPRi和CRISPRoff在抑制基因标方面进行了测试.
实验涉及评估细胞增殖的调节剂,表皮细胞转变为介质细胞 (EMT),以及人类诱导多能干细胞 (iPSCs) 中的神经元分化.

主要成果:

与现有的CRISPR系统相比,CRISPRgenee在抑制具有挑战性的基因标方面表现出卓越的性能.
该方法显著提高了基因枯竭效率,并减少了sgRNA性能差异.
克里斯普基因加速了基因枯竭,并确保了一致的表型效应,识别了更重要的基因命中.
结合的CRISPRko和CRISPRi方法增加了LOF率,而没有引起基因毒性压力.

结论:

CRISPRgenee为大规模的LOF屏幕提供了一种更有效和可重复的方法.
这项技术克服了当前CRISPR工具的关键局限性,增强了基因型到表型的发现.
克里斯普基尼 (CRISPRgenee) 促进了图书馆规模的缩小,并使更先进的LOF选应用程序成为可能.

关键词:

CP:生物技术生物技术通过CRISPR查进行查.克里斯普尔-Cas9是什么意思编辑表观基因组编辑基因编辑基因编辑基因功能丧失研究.

更多相关视频

Generation of Genomic Deletions in Mammalian Cell Lines via CRISPR/Cas9

Generation of Genomic Deletions in Mammalian Cell Lines via CRISPR/Cas9

Published on: January 3, 2015

Generating CRISPR/Cas9 Mediated Monoallelic Deletions to Study Enhancer Function in Mouse Embryonic Stem Cells

Generating CRISPR/Cas9 Mediated Monoallelic Deletions to Study Enhancer Function in Mouse Embryonic Stem Cells

Published on: April 2, 2016

相关概念视频

CRISPR

CRISPR

Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...

In-vitro Mutagenesis

In-vitro Mutagenesis

To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.