Abstract
Sensitive and accurate total genomic DNA methylation analysis was demonstrated by surface-enhanced Raman scattering (SERS) via embedded internal SERS nanotags. The assay was sensitive to 0.2 ng input DNA while differentiating as low as 6.25% changes in DNA methylation. The method could also successfully differentiate cells before and after de-methylating drug-treatment and between tumor and normal biopsies.
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