New CRISPR-Derived microRNA Sensing Mechanism Based on Cas12a Self-Powered and Rolling Circle Transcription-Unleashed Real-Time crRNA Recruiting
- 4 May 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in Analytical Chemistry
- Vol. 92 (9), 6702-6708
- https://doi.org/10.1021/acs.analchem.0c00680
Abstract
Current CRISPR-Cas-based nucleic acid sensing methods relying on the preassembled Cas-crRNA complexes are generally limited to the detection of protospacer-adjacent motif (PAM)-containing sequences, and nonspecific backgrounds are inevitable. Herein, we propose a new CRISPR-derived microRNA sensing mechanism based on rolling circle transcription (RCT)-unleashed self-recruiting of crRNA by Cas12a (Cas12a-SCR). In Cas12a-SCR, target microRNA can specifically trigger RCT to produce a long single- strand RNA with numerous pre-crRNA repeats, which can be trimmed and recruited by Cas12a actively. This new target-initiated, real-time producing, trimming, and self-assembling manner of Cas12a-crRNA remarkably suppresses the nonspecific background and relieves the stringent requirement of PAM site in the target sequence. Thus, the universality of the Cas12a-SCR toward different nucleic acid sequences is greatly expanded.Funding Information
- Ministry of Education of the People's Republic of China (GK201802016)
- National Natural Science Foundation of China (21575086, 21622507)
This publication has 57 references indexed in Scilit:
- DNA interrogation by the CRISPR RNA-guided endonuclease Cas9Nature, 2014
- Highly Sensitive and Specific Multiplexed MicroRNA Quantification Using Size-Coded Ligation Chain ReactionAnalytical Chemistry, 2013
- Efficient genome editing in zebrafish using a CRISPR-Cas systemNature Biotechnology, 2013
- Abstract P5-05-03: FOXP3 Regulates Metastatic Spread of Breast Cancer Via Control of Expression of CXCR4 Chemokine ReceptorCancer Research, 2010
- Gemcitabine Sensitivity Can Be Induced in Pancreatic Cancer Cells through Modulation of miR-200 and miR-21 Expression by Curcumin or Its Analogue CDFCancer Research, 2010
- Small‐Molecule Inhibitors of MicroRNA miR‐21 FunctionAngewandte Chemie, 2008
- A sensitive and high-throughput assay to detect low-abundance proteins in serumNature Medicine, 2006
- T7 RNA Polymerase Mediates Fast Promoter-Independent Extension of Unstable Nucleic Acid ComplexesBiochemistry, 2004
- Generation of circular RNAs and trans-cleaving catalytic RNAs by rolling transcription of circular DNA oligonucleotides encoding hairpin ribozymesNucleic Acids Research, 1998
- Generation of catalytic RNAs by rolling transcription of synthetic DNA nanocirclesNature Biotechnology, 1997