开发CRISPR/Cas9系统用于Riemerella病虫的基因组编辑
Yi Chang1, Honghao Huang2, Ruonan Zhao2
1College of Bioengineering, Hunan Polytechnic of Environment and Biology, Hengyang 421005, China.
Poultry science
|August 20, 2025
概括
研究人员开发了一种新的CRISPR/Cas9基因组编辑系统,pCasRA-SacB,用于Riemerella anatipestifer. 这种工具可以进行高效且无伤痕的基因改造,促进对这种家禽病原体的研究.
科学领域:
- 微生物学
- 细菌遗传学
- 分子生物学
背景情况:
- 在家禽行业造成重大经济损失.
- 有限的遗传工具阻碍了对R. anatipestifer病变的研究和理解.
- 集群定期间隔的简短的Palindromic重复 (CRISPR) / Cas9系统提供了一个强大的基因组编辑解决方案.
研究的目的:
- 开发和描述一种基于CRISPR/Cas9的新型基因组编辑系统,用于Riemerella anatipestifer.
- 在R. anatipestifer中建立一个高效和多用途的基因操纵工具.
- 促进对抗R. anatipestifer感染的基础研究和潜在治疗策略.
主要方法:
- 开发一种用于R. anatipestifer和E. coli的穿载体pCasRA-SacB.
- 纳入特定的复制来源,抗生素耐药性基因和独特的克隆地点.
- 包含 sgRNA 和 Cas9 的高表达促进物,以及用于塑操纵的 sacB 和 oriT.
- 在dprA基因中证明基因删除,插入和点突变.
主要成果:
- pCasRA-SacB系统显示出高效且无痕的基因组编辑能力.
- 在R. anatipestifer中实现了基因删除 (54.2%),插入 (100.0%) 和点突变 (50.0%) 的高编辑效率.
- 这种系统促进了快速的基因改造, 扩大了研究可能性.
结论:
- 在R. anatipestifer的基因操纵工具箱中,pCasRA-SacB系统是一个显著的进步.
- 这种新系统增强了研究R. anatipestifer病变和开发控制策略的能力.
- 这种工具对于应用研究和对R. anatipestifer生物学的基础研究都是有价值的.
更多相关视频
08:37A Rapid and Facile Pipeline for Generating Genomic Point Mutants in C. elegans Using CRISPR/Cas9 Ribonucleoproteins
Published on: April 30, 2018
7.7K
07:46CRISPR/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
6.0K
相关概念视频
01:28CRISPR/Cas9 Genome Editing
213
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...
213
01:59CRISPR
52.9K
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...
52.9K
02:53CRISPR and crRNAs
17.4K
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...
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...
17.4K
01:23The Antiviral System of Bacteria and Archaea: CRISPR
124
CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats is a adaptive immune system found in bacteria and archaea that protects against viral infections. This system enables prokaryotic cells to identify, remember, and neutralize foreign genetic elements, primarily bacteriophages, by storing fragments of the invader’s DNA as a genetic memory.The CRISPR immune response begins during an initial infection. Cas (CRISPR-associated) proteins play a central role in this...
124