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Updated: May 5, 2026

Investigation of Genetic Dependencies Using CRISPR-Cas9-based Competition Assays

Investigation of Genetic Dependencies Using CRISPR-Cas9-based Competition Assays

Published on: January 7, 2019

针对单细胞CRISPR屏幕进行强大的差异表达测试,感染的多重性较低

Timothy Barry, Kaishu Mason, Kathryn Roeder

bioRxiv : the preprint server for biology

|April 25, 2024

概括

单细胞CRISPR屏幕 (perturb-seq) 分析面临挑战,因为现有的方法会导致错误的阳性结果. 一种新的方法,SCEPTRE低MOI,提高了基因扰乱关联测试的准确性.

科学领域:

基因组学就是基因组学.
生物信息学是一种生物信息学.
计算生物学计算生物学

背景情况:

单细胞CRISPR屏幕 (perturb-seq) 对于将遗传干扰与细胞表型联系起来至关重要.
分析基因表达需要强大的关联测试方法,特别是计数数据.
现有的低感染多重性 (MOI) 扰动序列数据的方法表现出过多的错误阳性.

结论:

低MOI的SCEPTRE提供了一个更可靠的方法,用于在低MOI的扰乱-seq研究中进行关联测试.
这一进步提高了识别影响基因表达的遗传干扰的准确性.
这些发现为分析单细胞CRISPR查数据提供了关键的更新.

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相关概念视频

CRISPR and crRNAs

CRISPR and crRNAs

Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...