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High Throughput MicroRNA Profiling: Optimized Multiplex qRT-PCR at Nanoliter Scale on the Fluidigm Dynamic ArrayTM IFCs
Published on: August 3, 2011
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Programmable DNA barcode-encoded exponential amplification reaction for the multiplex detection of miRNAs
Yuqian Tan1, Li Zhang1, Shixiong Deng1
1Department of Forensic Medicine, Chongqing Medical University, Chongqing 400016, China. dengshixiong@cqmu.edu.cn.
Analytical Methods : Advancing Methods and Applications
|February 28, 2024
Summary
This study presents a novel method for detecting multiple microRNAs (miRNAs) simultaneously using exponential isothermal amplification (E-EXPAR). This sensitive platform offers a promising tool for early disease diagnosis and monitoring through nucleic acid detection.
Area of Science:
- Biochemistry
- Molecular Biology
- Diagnostics
Background:
- Multiplex analysis of microRNAs (miRNAs) is crucial for disease diagnosis and monitoring.
- Existing methods may lack sensitivity or programmability for comprehensive miRNA profiling.
Purpose of the Study:
- To develop a programmable, multiplex, and sensitive platform for one-pot detection of miRNAs.
- To establish a novel approach for accurate quantification and simultaneous analysis of multiple miRNA targets.
Main Methods:
- Utilized melting temperature encoded sequences and exponential isothermal amplification (E-EXPAR) for miRNA detection.
- Employed nicking and polymerization/displacement cycles to generate barcode strands.
- Quantified miRNAs via melting curve analysis based on fluorescence changes and photo-induced electron transfer.
Main Results:
- Achieved highly sensitive detection limits for miRNA-21 (3.3 fM), miRNA-9 (2.9 fM), and miRNA-122 (1.7 fM).
- Successfully demonstrated simultaneous detection of three miRNAs in biological samples.
- Results from E-EXPAR correlated consistently with established RT-qPCR methods.
Conclusions:
- The developed E-EXPAR platform is programmable and universal for multiplex miRNA analysis.
- This approach shows significant potential as an alternative for multiplex nucleic acid detection in clinical diagnostics and prognostics.
