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Comparison of Four Commercial Kits for Isolation of Urinary Cell-Free DNA and Sample Storage Conditions.


ABSTRACT: Urinary cell-free DNA (cfDNA) is an attractive body fluid for liquid biopsy. In this study, we compared the efficiencies of four commercial kits for urinary cell-free DNA (cfDNA) isolation and of various sample storage conditions. Urinary cfDNA was isolated from 10 healthy individuals using four commercial kits: QIAamp Circulating Nucleic Acid Kit (QC; Qiagen), MagMAX™ Cell-Free DNA Isolation Kit (MM; Applied Biosystems), Urine Cell-Free Circulating DNA Purification Midi Kit (NU; Norgen Biotek), and Quick-DNA™ Urine Kit (ZQ; Zymo Research). To assess the isolation efficiency, an Agilent 2100 Bioanalyzer with High Sensitivity DNA chips was used, and cfDNA yield was defined as the amount of cfDNA obtained from 1 mL of urine. MM and QC provided the highest cfDNA yield in the 50-300 bp range, and MM and NU gave the highest cfDNA yield in the 50-100 bp range. In particular, the NU kit was efficient for isolation of more fragmented cfDNA in the range of 50-100 bp with the lowest cellular genomic DNA contamination. ZQ had the best cost-efficiency for isolating the same amount of urinary cfDNA. Samples stored at -70 °C with the addition of 10 mM EDTA resulted in the highest cfDNA yield 3 months after sample collection.

SUBMITTER: Lee EY 

PROVIDER: S-EPMC7236016 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Comparison of Four Commercial Kits for Isolation of Urinary Cell-Free DNA and Sample Storage Conditions.

Lee Eun Young EY   Lee Eun-Ju EJ   Yoon Hana H   Lee Dong Hyeon DH   Kim Kwang Hyun KH  

Diagnostics (Basel, Switzerland) 20200418 4


Urinary cell-free DNA (cfDNA) is an attractive body fluid for liquid biopsy. In this study, we compared the efficiencies of four commercial kits for urinary cell-free DNA (cfDNA) isolation and of various sample storage conditions. Urinary cfDNA was isolated from 10 healthy individuals using four commercial kits: QIAamp Circulating Nucleic Acid Kit (QC; Qiagen), MagMAX™ Cell-Free DNA Isolation Kit (MM; Applied Biosystems), Urine Cell-Free Circulating DNA Purification Midi Kit (NU; Norgen Biotek),  ...[more]

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