一种用于Clostridium perfringens的新型类型化方法,使用多重重组合酶聚合酶放大和CRISPR/Cas12a
Siying Li1,2, Qinghong Zhou1, Qingxun Zhang3
1Wenzhou Key Laboratory of Sanitary Microbiology, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China.
Frontiers in microbiology
|March 6, 2026
概括
一种新的方法,Cp-MRC12a,使用重组酶聚合酶放大和CRISPR/Cas12a快速类型Clostridium perfringens菌株. 这种无仪器测定有助于早期疾病诊断和病原体识别.
科学领域:
- 微生物学 微生物学
- 分子诊断学 分子诊断学
- 细菌学 细菌学是一门学科.
背景情况:
- 克洛斯特里 (Clostridium perfringens) 在人类和动物中引起各种疾病.
- 准确和快速的C. perfringens类型化对于及时诊断和降低死亡率至关重要.
- 现有的打字方法可能缺乏速度,灵敏度或可访问性.
研究的目的:
- 开发一种快速,灵敏,准确和无仪器的C. perfringens打字方法.
- 针对特定的毒素基因 (α,β,e,i) 来进行菌株分化.
- 为早期疾病诊断和病原体识别提供一个改进的工具.
主要方法:
- 为关键毒素基因设计特定的原始配对和crRNA序列.
- 开发一个多重重组合聚合酶放大 (RPA) 辅助的CRISPR/Cas12a系统 (Cp-MRC12a).
- 使用细菌菌株,临床样本和尖端样本验证测试.
主要成果:
- 在Cp-MRC12a试验中,C. perfringens在1小时内实现了输入.
- 证明了高灵敏度,检测极限为10副本/μL (A型) 和100副本/μL (B-E型).
- 该试验具有高特异性,没有与非标细菌的交叉反应,并且在临床样本上具有可靠的性能.
结论:
- Cp-MRC12a为C. perfringens的类型提供了一个强大的和实用的方法.
- 这种方法显著推进了早期疾病诊断和病原体识别.
- 由于Cp-MRC12a无仪器,因此可以在各种诊断环境中使用.
相关概念视频
CRISPR and crRNAs
19.4K
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...
19.4K
Conservative Site-specific Recombination and Phase Variation
7.1K
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
7.1K
CRISPR/Cas9 Genome Editing
2.2K
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...
2.2K
CRISPR
58.5K
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...
58.5K


