通过DNA控制的CRISPR/Cas12a跨裂变使混合和读取FEN1活动检测成为可能
Shengyong Ding1,2, Yuhang Li1, Fengshuang Wang2
1School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China.
Analytical chemistry
|January 26, 2026
概括
一种新的DNA控制的CRISPR/Cas12a (FCT-CRISPR) 方法简化了检测内核酶1 (FEN1) 活性. 这项创新提供了灵敏,准确,混合和读取检测,没有复杂的步骤,有助于疾病诊断.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 生物感应是一种生物感应.
背景情况:
- 克里斯普尔/Cas12a为生物感知提供了高特异性和信号放大.
- 目前使用CRISPR/Cas12a检测内核酶1 (FEN1) 活动的方法需要复杂的前或复制步骤,增加操作复杂性和错误信号风险.
研究的目的:
- 开发一种简化,灵敏和准确的方法来检测FEN1活动.
- 使用CRISPR/Cas12a建立FEN1活动监测的混合阅读平台.
主要方法:
- 设计了一种由DNA控制的新型CRISPR/Cas12a跨裂变 (FCT-CRISPR) 策略.
- 采用了形结构的子DNA探头,其中板起到分裂激活器的作用,脚手架提供了硬质障碍.
- 通过FEN1裂变释放了激活器,触发了用于信号放大的CRISPR/Cas12a跨裂变.
主要成果:
- 该FCT-CRISPR战略实现了FEN1活动的敏感和准确检测.
- 该方法证明了0.2mU的低检测极限和对非标酶的高特异性.
- 该平台成功检测了FEN1在癌细胞溶解物中的活性,显示了临床潜力.
结论:
- FCT-CRISPR为FEN1活动检测提供了一个灵敏,准确和混合和读取平台.
- 这种方法消除了对外基因DNA结合或复制步骤的需求.
- 该FCT-CRISPR战略显示出与FEN1相关疾病的早期诊断的前景.
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