集成色度测量CRISPR/Cas12a 在微流体基于纸的分析装置上检测双链DNA.
Zhiheng Zhang1, Qiyu Fu1, Tiantai Wen1
1Integrated Devices and Intelligent Diagnosis (ID2) Laboratory, CUHKSZ-Boyalife Regenerative Medicine Engineering Joint Laboratory, School of Medicine, The Chinese University of Hong Kong, Shenzhen 518172, China.
Biosensors
|January 27, 2026
概括
一种新的纸质设备使用CRISPR技术快速,无仪器检测高风险人类乳头瘤病毒 (HPV) DNA. 这个便携式平台为偏远地区的早期宫癌查提供了低成本的解决方案.
科学领域:
- 分子诊断学 分子诊断
- 生物技术是生物技术.
- 照顾点检测检测 照顾点检测
背景情况:
- 早期检测高风险的人类乳头瘤病毒 (HPV),特别是HPV16 E7,对于预防宫癌至关重要.
- 目前的诊断方法可能是复杂的,昂贵的,需要专门的设备,限制在资源有限的环境中使用它们.
研究的目的:
- 开发一种新的,便携式,无仪器的生物传感平台,用于快速和可视检测HPV16 E7 DNA.
- 将重组酶聚合酶放大 (RPA) 与CRISPR/Cas12a技术集成到微流体纸质分析装置 (μPAD) 上.
主要方法:
- 一个集成冷RPA和CRISPR试剂的μPAD被设计成具有特定的功能区域.
- Cas12a的跨裂变活动被用来在目标识别后释放标记的记者.
- 使用金纳米颗粒 (AuNPs) 和抗FAM抗体的色度检测提供了双链DNA (dsDNA) 的视觉读取.
主要成果:
- 该平台能够在60分钟内对HPV16 E7 dsDNA进行定量,视觉检测,达到100 pM.
- 在色度信号的灰色值和目标DNA度之间观察到线性相关性.
- 该试验在加样本中显示出高精度和可重复性.
结论:
- 开发的μPAD平台提供了一个快速,低成本和用户友好的解决方案,用于点的护理HPV查.
- 这种将CRISPR诊断与基于纸张的微流体技术的整合,为资源有限的环境推进了分子诊断.
- 该技术具有超越HPV检测的可扩展的护理点分子诊断的潜力.
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