使用CRISPR-Cas12a/13a与同热放大相结合检测猪环状病毒 (PCV)
Huijuan Wang1, Gang Zhou1, Huiming Liu1
1Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China.
Viruses
|October 26, 2024
概括
一种新的CRISPR-Cas12a/13a方法与异热放大相结合,可以快速,灵敏和特异地检测猪肉病毒 (PCV) 2,3和4型. 这种技术非常适合在养猪场现场实地使用,克服了传统方法的局限性.
科学领域:
- 兽医病毒学 兽医病毒学
- 分子诊断学 分子诊断
- 生物技术是生物技术.
背景情况:
- 猪圈病毒 (PCV) 在全球猪产业造成重大经济损失.
- 早期和准确的PCV检测对于疾病管理和控制至关重要.
- 现有的检测方法 (PCR,qPCR,ELISA) 通常需要专门的设备和专业知识,限制了现场应用.
研究的目的:
- 开发和评估一种新,灵敏,快速和特定的PCV检测方法.
- 评估这种新方法是否适用于猪养殖环境中的现场应用.
- 将新方法的性能与现有技术进行比较.
主要方法:
- 开发一种使用集群定期间隔短时间的Palindromic重复 (CRISPR) -Cas12a/13a技术的检测系统.
- 将CRISPR-Cas与异热放大技术相结合:酶复合酶放大 (ERA),复合酶聚合酶放大 (RPA) 和循环介导异热放大 (LAMP).
- 优化和验证使用临床样本检测PCV类型2,3,4的方法.
主要成果:
- 这种基于CRISPR的新方法实现了高灵敏度,检测到每微升只有一副.
- 该技术表现出极好的特异性,与其他常见的猪病毒没有交叉反应.
- 使用临床样本的验证显示,与定量PCR (qPCR) 结果的一致率为100%.
结论:
- ERA/LAMP/RPA-CRISPR-Cas12a/Cas13a方法为PCV检测提供了一个高度敏感,特定和快速的方法.
- 这种创新技术适用于现场实地测试,需要最小的设备和专业知识.
- 它为PCV监测和管理提供了实用和有效的解决方案,特别是在资源有限的环境中.
相关概念视频
01:59CRISPR
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 Short...
02:53CRISPR 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...
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...
01:59CRISPR
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 Short...