支持CRISPR/Cas12a的无放大色度视觉传感策略,用于对生物标记物的治疗点诊断
Zhe Zhao1,2, Qing Xiong1, Yan Zhu1
1Cancer Research Center & Jiangxi Engineering Research Center for Translational Cancer Technology, Jiangxi University of Chinese Medicine & Jiangxi Province Key Laboratory for Diagnosis, Treatment and Rehabilitation of Cancer in Chinese Medicine, Nanchang, Jiangxi 330004, China.
Analytical chemistry
|December 20, 2024
概括
这项研究引入了一种新的CRISPR/Cas12a视觉生物传感器,用于快速检测疾病生物标志物. 该测试使用颜色变化获得准确的结果,在60分钟内实现对BRCA1的敏感检测.
科学领域:
- 生物技术是生物技术.
- 分子诊断学 分子诊断学
- 纳米技术纳米技术
背景情况:
- 克里斯普尔/Cas12a生物传感器在临床检测 (POCT) 中具有前景.
- 现有的基于CRISPR的POCT方法通常依赖于光探针.
- 需要有视觉,快速和敏感的检测策略.
研究的目的:
- 开发一种新的CRISPR/Cas12a支持的多色视觉生物传感策略.
- 为了快速检测疾病生物标志物,提高视觉准确度.
- 为了证明该试验在临床样本中对敏感生物标记物量化的潜力.
主要方法:
- 利用CRISPR/Cas12a的跨裂变活性进行信号放大.
- 使用磁珠 (MBs) 与胡卜过氧化酶 (HRP) 相结合作为记者探针.
- 开发了一个基于HRP介导的黄金纳米双金字塔 (AuNBPs) 蚀刻的色度测量读数.
主要成果:
- 测试产生了生动的色彩反应,以增强视觉检测.
- 在60分钟内显示乳腺癌1基因 (BRCA1) 的敏感检测到30 pM.
- 在人血清样本中成功应用了用于检测BRCA1的生物传感器.
结论:
- 开发的CRISPR/Cas12a视觉生物传感器提供了一种快速而灵敏的生物标志物检测方法.
- 多色视觉输出可以提高检测准确度.
- 该试验显示了在POCT应用中敏感生物标志物测定的巨大潜力.
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