相关实验视频

Updated: Jul 20, 2025

Ubiquitous and Tissue-specific RNA Targeting in Drosophila Melanogaster using CRISPR/CasRx

Ubiquitous and Tissue-specific RNA Targeting in Drosophila Melanogaster using CRISPR/CasRx

Published on: February 5, 2021

克里斯帕/卡斯9基因编辑在多虫中至关重要

I S Osadchiy¹, S O Kamalyan¹, K Y Tumashova¹

¹Institute of Gene Biology, Russian Academy of Sciences, Moscow, 119334 Russian Federation.

|August 4, 2023

概括

这项研究引入了一种新的CRISPR/Cas9基因组编辑策略,以克服低效率和非目标效应,特别是对于重要的基因. 通过使用Drosophila的"预救"遗传背景,研究人员成功地删除了必要的基因.

科学领域:

遗传学是一个遗传学.
分子生物学分子生物学
基因组工程是基因组工程.

背景情况:

克里斯普尔/Cas9技术面临低效率和非目标效应的挑战,阻碍其在生命科学中的应用.
鉴定必要的基因是困难的,因为它们的淘汰往往导致失败,掩盖了它们的重要性.
生存偏差表明基因基本性,编辑效率和非目标突变之间存在联系.

研究的目的:

开发一个改进的CRISPR/Cas9基因组编辑策略.
为了应对低效率和非目标效应的挑战,特别是对于必不可少的基因.
研究基因基本性与CRISPR/Cas9编辑结果之间的关系.

主要方法:

开发了用于CRISPR/Cas9基因组编辑的新策略.
在Drosophila菌株中利用了"预救"的遗传背景.
产生了三个基本基因的删除:trf2,top2和mep-1.

主要成果:

在Drosophila.成功地产生了关键基因 (trf2, top2, mep-1) 的删除.
展示了一种提高CRISPR/Cas9基因组编辑效率的新策略.
提供证据支持基因基本性与编辑效率/非目标效应之间的联系.

结论:

拟议的战略增强了CRISPR/Cas9基因组编辑,特别是对于重要的基因.
这些发现表明,基因基本性会影响编辑效率和非目标突变率.
这种方法为克服基因工程的局限性提供了一个有希望的解决方案.

关键词:

这就是CRISPR/Cas9的作用.基因编辑是必不可少的基因组编辑基因组编辑家庭管理基因的基因

更多相关视频

CRISPR/Cas9 Editing of the C. elegans rbm-3.2 Gene using the dpy-10 Co-CRISPR Screening Marker and Assembled Ribonucleoprotein Complexes.

CRISPR/Cas9 Editing of the C. elegans rbm-3.2 Gene using the dpy-10 Co-CRISPR Screening Marker and Assembled Ribonucleoprotein Complexes.

Published on: December 11, 2020

An Efficient Strategy for Generating Tissue-specific Binary Transcription Systems in Drosophila by Genome Editing

An Efficient Strategy for Generating Tissue-specific Binary Transcription Systems in Drosophila by Genome Editing

Published on: September 19, 2018

相关概念视频

CRISPR/Cas9 Genome Editing

CRISPR/Cas9 Genome Editing

The CRISPR-Cas system serves as a bacterial defense mechanism against invading genetic elements such as viruses and plasmids, forming the foundation for its adaptation as a powerful genome-editing tool. Originally discovered in prokaryotes, this system has been repurposed to revolutionize genetic engineering across a wide range of organisms, including plants, animals, and humans. The core component, Cas9, is an endonuclease derived from Streptococcus pyogenes, capable of introducing...

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...

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...

Homologous Recombination

Homologous Recombination

The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...