Abstract
We report on a detection method for methylated DNA on a microfluidic chip, which needs no external power for fluid pumping. The methylated DNA was sandwiched by immobilized probe DNA and an anti-methylcytosine antibody. The fluorescence signal was amplified by our original amplification technology. The detection method was first optimized using a 22-mer DNA sequence, then further validated using a 60-mer DNA sequence adapted from the SEPT9 gene. We were able to detect the methylated 60-mer DNA at 0.4 nM within 18 min.
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