A previously unrecognized feature of CRISPR/Cas12a is identified, in which incorporation of ribonucleotides into single stranded DNA targets modulates Cas12a activation efficiency, revealing a hybrid DNA/RNA-dependent regulation of Cas12a activity.
This one-pot Cas13a/Cas12a cascade fluorescence biosensor enabled quantitative detection of miRNA-21 over a concentration range of 1-1000 pmol/L within 60 min, with a low detection limit of 0.66 pM.
Jing Yuan, Meng Shen, Li-Hua Ding et al.· Talanta: The International J...· 0 citations
A rapid isothermal strategy for miRNA detection based on ligation-dependent generation of Cas13a-activating RNA and CRISPR/Cas13a-mediated signal amplification that provides a useful framework for miRNA detection.
Jiyoon Lee, Jihyun Kim, Ye-On-Jo Dong et al.· ACS Omega· 0 citations
The clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated proteins (Cas) system enables sensitive and specific biomolecular detection due to its programmability, high fidelity, and signal amplification. Herein, a novel universal CRISPR/Cas12a-G4 DNAzyme-TMB (Cas-GT) enzymatic biosensi...
Huisi Qin, Jing-Xuan Liu, Yang Luo et al.· In Analysis· 0 citations
A controllable CRISPR/Cas12a-based signal logic gate that enables simultaneous detection of KRAS G12C mutation and Septin9 promoter methylation in a single reaction and offers a simple and reliable platform for simultaneous genetic and epigenetic analysis in point-of-care cancer screening.
Tag-free fluorescence biosensing platform for the detection of circulating miRs in serum, targeting microRNA-21 (miR-21) and microRNA-10b (miR-10b) as clinically relevant oncogenic markers, and demonstrates excellent sequence discrimination capability.
Sepideh Hassibian, Masoomeh Esmaelpourfarkhani, M. Alibolandi et al.· Methods· 0 citations
The CRISPR/Cas12a system has revolutionized molecular diagnostics due to its RNA-guided trans-cleavage activity, enabling programmable and highly accurate nucleic acid detection. However, most Cas12a-based assays are optimized for DNA targets, while direct RNA detection constrained by limited sensitivity, typically at...
Jun Chen, Haiyan Zheng, Lucas Guan et al.· Biosensors & bioelectronics· 0 citations
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