UltraPrep is a scalable, cost-effective, bead-based method for purifying cell-free DNA.

Area of Science:

• Molecular Biology
• Biotechnology
• Genomics

Background:

• Accurate purification of cell-free DNA (cfDNA) is crucial for various molecular assays.
• Existing cfDNA purification methods can be costly and may not efficiently remove interfering high molecular weight genomic DNA (hmwDNA).
• Nucleosomal fragmentation is a key characteristic of cfDNA, distinguishing it from genomic DNA.

Purpose of the Study:

• To introduce UltraPrep, an open-source, two-step method for cfDNA purification.
• To evaluate the efficiency, cost-effectiveness, and quality of cfDNA isolated using UltraPrep.
• To demonstrate the removal of hmwDNA and assess the suitability of UltraPrep cfDNA for downstream applications.

Main Methods:

• UltraPrep employs a two-step protocol: total DNA extraction followed by size-selective enrichment of cfDNA fragments.
• The method utilizes simple, magnetic bead-based technology adaptable to various sample input volumes.
• Physical and molecular quality analyses were performed on purified cfDNA.

Main Results:

• UltraPrep yields cfDNA comparable to popular commercial methods.
• The method significantly reduces the cost of cfDNA isolation.
• Purified cfDNA meets or exceeds quality metrics of standard procedures and effectively removes hmwDNA.

Conclusions:

• UltraPrep provides an efficient, cost-effective, and high-quality open-source solution for cfDNA purification.
• The removal of hmwDNA by UltraPrep addresses a critical preanalytical concern for blood sample collection.
• UltraPrep is a valuable tool for researchers requiring reliable cfDNA isolation for downstream genomic analyses.