通过多功能CRISPR-Cas12a集成的病原体的固体相提取和增强无放大检测
Zimu Tian1, He Yan1, Yong Zeng1,2,3
1Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States.
ACS applied materials & interfaces
|March 12, 2024
概括
这项研究引入了一种新的CRISPR-Cas12a测定 (SPEEDi-CRISPR) 测定,用于快速,敏感的传染病诊断. 它集成了目标识别,丰富和信号生成,改善了 Point-of-Care 应用的检测极限.
科学领域:
- 分子诊断学 分子诊断
- 生物传感技术的技术
- 基于CRISPR的系统
背景情况:
- 资源有限的环境需要有效的诊断工具来管理感染.
- 基于CRISPR的生物感知提供了下一代诊断,包括点治疗 (POC) 测试.
- 现有的CRISPR诊断通常需要预放大,这限制了它们的效率.
研究的目的:
- 开发一种新型的CRISPR-Cas12a核酸测定方法,可以整合多种功能.
- 为了提高诊断的敏感性,并否定了需要预放大.
- 创建一个多功能平台,用于点的护理传染病检测.
主要方法:
- 开发了由CRISPR-Cas12a (SPEEDi-CRISPR) 集成的固相提取和增强检测试验.
- 使用Cas12a涂层的磁珠用于固相提取,丰富和化检测.
- 集成目标识别,序列特定的丰富和信号生成在一个平台上.
主要成果:
- 在没有预放大的情况下,达到从皮科摩拉 (pM) 到女性摩拉 (fM) 的检测极限.
- 证明了高特异性,区分HPV-18与HPV-16和帕尔沃病毒B19.
- 在低于2.3 fM (100分钟) 和4.7 fM (60分钟) 的度检测到HPV-18.
- 成功地将试验与基于智能手机的光检测和POC应用的侧向流量试验相结合.
结论:
- 该SPEEDi-CRISPR试验提供了一个无预放大方法,用于高度敏感的核酸检测.
- 这个集成的平台利用了CRISPR-Cas12a的功能,有效地提取,丰富和检测.
- 该试验对开发先进,快速和可访问的传染病CRISPR诊断方法充满希望.
更多相关视频
10:16Author Spotlight: Development of Simplified CRISPR-Based Tests for Rapid Detection of Infectious Diseases
Published on: August 16, 2024
1.2K
07:59Rapid and Specific Detection of Acinetobacter baumannii Infections Using a Recombinase Polymerase Amplification/Cas12a-based System
Published on: April 25, 2025
256
相关概念视频
01:59CRISPR
50.9K
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...
50.9K
02:53CRISPR and crRNAs
17.0K
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...
17.0K