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Related Experiment Video

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Probe-based Real-time PCR Approaches for Quantitative Measurement of microRNAs
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A comparative fluorescent beacon-based method for serum microRNA quantification.

Madhu Beta1, Subramanian Krishnakumar, Sailaja V Elchuri

  • 1CeNTAB, SASTRA (Shanmugha Arts, Science, Technology & Research Academy) University.

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry
|March 14, 2015
PubMed
Summary

Directly measuring serum microRNA (miRNA) copy number is now possible using a novel locked nucleic acid (LNA) probe. This breakthrough allows for precise quantification of these potential disease biomarkers in minimal sample volumes.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Biomarker Discovery

Background:

  • Circulating serum microRNAs (miRNAs) show potential as disease diagnostic biomarkers.
  • Quantifying serum miRNA copy number is challenging due to low abundance.

Purpose of the Study:

  • To develop a direct method for measuring serum miRNA copy number.
  • To demonstrate the biological variation of miRNA copy number in human serum.

Main Methods:

  • Utilized a locked nucleic acid (LNA) modified beacon probe for direct miRNA detection.
  • Employed fluorescence spectroscopy and microscopy for quantification.
  • Used a minimal serum volume of 0.1 μL from healthy and retinoblastoma patients.

Main Results:

  • Successfully achieved direct measurement of serum miRNA copy number.
  • Demonstrated the method's ability to capture biological variations in miRNA levels.
  • Validated the technique using small serum volumes.

Conclusions:

  • A single-step method for direct serum miRNA copy number quantification has been established.
  • This technique offers a sensitive approach for biomarker analysis.
  • The method can reveal biological variations in miRNA levels, aiding disease diagnosis.