Highly sensitive detection of CpG methylation in genomic DNA by AuNP-based colorimetric assay with ligase chain reaction†
Abstract
We have developed a new ligase chain reaction-based colorimetric assay for detection of DNA methylation with ultrahigh sensitivity and selectivity. Using the proposed assay, as low as 0.01 fM methylated DNA can be detected by visualization of color changes of gold nanoparticles with the naked eye.