1. Co-freezing localized CRISPR-Cas12a system enables rapid and sensitive nucleic acid analysis.
- Author
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Zhang, Lifeng, Luo, Shihua, Li, Wenbin, Su, Wanting, Chen, Siting, Liu, Chunchen, Pan, Weilun, Situ, Bo, Zheng, Lei, Li, Ling, Yan, Xiaohui, and Zhang, Ye
- Subjects
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HUMAN papillomavirus , *NUCLEIC acids , *PAPILLOMAVIRUS diseases , *CRISPRS , *ACID analysis - Abstract
Rapid and sensitive nucleic acid detection is vital in disease diagnosis and therapeutic assessment. Herein, we propose a co-freezing localized CRISPR-Cas12a (CL-Cas12a) strategy for sensitive nucleic acid detection. The CL-Cas12a was obtained through a 15-minute co-freezing process, allowing the Cas12a/crRNA complex and hairpin reporter confined on the AuNPs surface with high load efficiency, for rapid sensing of nucleic acid with superior performance to other localized Cas12a strategies. This CL-Cas12a based platform could quantitatively detect targets down to 98 aM in 30 min with excellent specificity. Furthermore, the CL-Cas12a successful applied to detect human papillomavirus infection and human lung cancer-associated single-nucleotide mutations. We also achieved powerful signal amplification for imaging Survivin mRNA in living cells. These findings highlight the potential of CL-Cas12a as an effective tool for nucleic acid diagnostics and disease monitoring. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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