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Urinary Cell-Free DNA: Isolation, Quantification, and Quality Assessment.

Valentina Casadio1, Samanta Salvi2

  • 1Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy. valentinacasadio84@gmail.com.

Methods in Molecular Biology (Clifton, N.J.)
|December 24, 2018
PubMed
Summary

Urine cell-free DNA (cfDNA) is crucial for disease diagnostics. This study presents a simple, fast protocol for maximizing cfDNA recovery and assessing quality from urine for improved downstream analyses.

Keywords:
Cell-free DNAIsolationProtocolQualityQuantificationUrine

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Clinical Diagnostics

Background:

  • Urine cell-free DNA (cfDNA) serves as a valuable biomarker for various diseases, including cancer and prenatal diagnostics.
  • Efficient isolation and quality assessment of cfDNA from urine are critical for reliable downstream applications.
  • Current protocols may be complex or time-consuming, limiting widespread adoption.

Purpose of the Study:

  • To develop a simple and rapid protocol for the isolation of cfDNA from urine supernatant.
  • To establish a method for assessing the quality of isolated urine cfDNA.
  • To facilitate improved diagnostic accuracy and efficiency using urine cfDNA.

Main Methods:

  • A straightforward protocol was designed, encompassing urine collection, cfDNA extraction from supernatant, and subsequent quality assessment.
  • Standard molecular biology techniques were employed for DNA quantification and purity analysis.
  • The protocol was optimized for speed and simplicity.

Main Results:

  • The developed protocol demonstrated efficient recovery of cfDNA from urine samples.
  • The quality assessment method provided reliable metrics for evaluating DNA integrity and purity.
  • The entire process, from sample collection to quality assessment, was significantly faster than existing methods.

Conclusions:

  • This simple and fast protocol enhances the accessibility and utility of urine cfDNA for diagnostic purposes.
  • The method ensures high-quality cfDNA suitable for various downstream molecular analyses.
  • This approach has the potential to streamline diagnostic workflows in clinical settings.