高通量和集成的CRISPR/Cas12a基于分子诊断使用深度学习启用微流体系统
Li Zhang1, Huili Wang2, Sheng Yang2
1School of Basic Medical Sciences, Tsinghua University, Beijing 100084, China.
ACS nano
|August 22, 2024
概括
一个新的微流体系统,mutaSCAN,使用CRISPR/Cas12a.提供快速和超高通量检测SARS-CoV-2及其变体. 这种先进的分子诊断工具克服了广泛传播的病原体识别之前的局限性.
科学领域:
- 分子诊断学 分子诊断学
- 这就是CRISPR技术.
- 微流体学 微流体学
背景情况:
- 基于CRISPR/Cas的诊断方法对快速检测病原体,包括SARS-CoV-2,显示出有前途.
- 目前的局限性包括低吞吐量,集成挑战和复杂的试剂制备,阻碍实际应用.
研究的目的:
- 开发一种超高通量微流体系统,用于快速检测SARS-CoV-2及其变体.
- 在产量和复杂性方面解决现有的基于CRISPR的诊断方法的局限性.
主要方法:
- 开发了一种名为mutaSCAN的微流体多板系统.
- 该系统集成了CRISPR/Cas12a与非提取RT-LAMP以及支持深度学习的原型设备.
- 为了提高性能,使用了自主开发的试剂.
主要成果:
- mutaSCAN系统在30分钟内在模拟样本中检测到SARS-CoV-2,其度低至250副本/毫升.
- 实现了每轮高达96个样本的吞吐量.
- 在临床试样中证明了高准确性:98%用于常规测试和100%用于突变测试,没有假阳性.
结论:
- mutaSCAN系统为SARS-CoV-2和变种检测提供了快速,灵敏和高吞吐量解决方案.
- 这项技术克服了实际,资源有限的分子诊断的关键障碍.
- 该系统显示了传染病监测和突变跟踪的巨大潜力.
相关概念视频
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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...


