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Related Experiment Video

Updated: Jun 13, 2025

Probe-based Real-time PCR Approaches for Quantitative Measurement of microRNAs
10:28

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A sensitive one-pot ROA assay for rapid miRNA detection.

Zhihao Hou1, Wenpeng Deng1,2, Alun Li1

  • 1Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120 China.

Abiotech
|September 16, 2024
PubMed
Summary

A new one-step RNA O-circle amplification (ROA) assay rapidly and accurately detects microRNAs (miRNAs). This user-friendly method offers high sensitivity for disease diagnostics and biological research.

Keywords:
Fluorescence detectionRolling circle amplification (RCA)Sensitive detectionmiRNA

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Biotechnology

Background:

  • MicroRNAs (miRNAs) and short RNA fragments are vital biomarkers for research and diagnostics.
  • Challenges in miRNA detection include low abundance, short length, and sequence similarity.

Purpose of the Study:

  • To develop a highly sensitive, rapid, and user-friendly assay for microRNA detection.
  • To address the limitations of existing miRNA detection methods.

Main Methods:

  • A one-step RNA O-circle amplification (ROA) assay was developed.
  • The assay involves probe hybridization, linear rolling circle amplification (RCA) with dUTP, and U-nick reactions for exponential amplification.
  • Assay completion within one hour with visual readout.

Main Results:

  • Achieved a detection limit as low as 0.15 fmol (6 pM).
  • Generated amplification yields up to the microgram level.
  • Demonstrated effectiveness in detecting various miRNAs and phage ssRNA.

Conclusions:

  • The ROA assay provides a rapid, accurate, and user-friendly solution for miRNA detection.
  • This method enhances capabilities in biological research and disease diagnostics.