用热编程的单CRISPR测定用于现场的流行病监测
Zhen Huang1,2, Yajuan Dong3,4, Yang Yang5
1Center for Cellular and Molecular Diagnostics, Tulane University School of Medicine, New Orleans, LA, USA.
Nature communications
|November 21, 2025
概括
一种新的热调节异步CRISPR增强 (TRACE) 测定方法提供了快速和灵敏的麻疹病毒 (MPXV) 检测. 这种精简的诊断工具在临床样本中实现了高精度,为护理点应用铺平了道路.
科学领域:
- 分子生物学分子生物学
- 诊断技术 诊断技术 诊断技术
- 传染病研究 传染病研究
背景情况:
- 病毒 (MPXV) 爆发需要提高诊断能力,以有效控制流行病.
- 目前基于CRISPR的诊断分析在临床翻译方面面临挑战,原因是复杂性和低吞吐量.
- 对于传染病,急需快速,灵敏和易于使用的诊断工具.
研究的目的:
- 开发和验证一种基于CRISPR的新型,精简的测定方法,用于快速和灵敏地检测多个DNA标,包括MPXV.
- 评估新试验在临床样本中的性能,并评估其适用于临床应用的适用性.
- 为了实现病原体和宿主基因的同时检测,以提高诊断可靠性.
主要方法:
- 开发一种热调节异步CRISPR增强 (TRACE) 试验,采用单形式.
- 评估试验的检测极限 (LOD) 和与正规的CRISPR试验进行比较.
- 使用多种临床样本验证TRACE测定性能,包括MPXV检测.
- 在门诊环境中对qPCR进行TRACE检测的评估.
主要成果:
- TRACE 试验显示了高度敏感的检测极限 (2.5 个副本/试验),比标准的一CRISPR 试验低 40 倍.
- 临床样本分析显示,在各种样本类型中,精度为99.5%,MPXV在11分钟内检测到.
- 护理点的TRACE测定符合ASSURED标准,性能与qPCR相比,报告时间缩短了五倍.
- 通过TRACE,可以同时检测病原体和宿主基因,克服了现有的CRISPR分析的局限性.
结论:
- 在TRACE测试提供了一个快速,灵敏和准确的诊断解决方案,传染病,如麻疹.
- 它的简化,一式格式和护理点功能促进了快速的现场监视和从长椅到床边的翻译.
- 通过整合内部控制和提高吞吐量,TRACE提高了CRISPR诊断,解决了临床实施的关键局限性.
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相关概念视频
Real Time RT-PCR
Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
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CRISPR
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...
