Abstract
DNA analysis is used for a variety of purposes, including disease diagnosis and DNA profiling; this involves extracting DNA from living organisms. In this study, we prepared polycationic silica particles to extract DNA that has the negatively charged phosphate backbone from solution. The coated particles were prepared by mixing conventional silica gel particles and poly-Lys; these particles could efficiently extract 1.3μg of cell-free DNA from 50mL of (male) urine. It is expected that these easily prepared particles (just a mixture of two commercially available chemicals) can be used as a noninvasive diagnostic tool for genetic disorders such as cancer, diabetes, and hypertension. Graphical abstract Effective extraction method of cfDNA from urine was developed that used commercially available silica gel particles and poly-Lys.
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