| 摘要 |
The invention relates to a method for detecting 5-methylcytosine in genomic DNA samples. Firstly, a genomic DNA from a DNA sample is chemically reacted with a reagent, whereby 5-methylcytosine and cytosine react differently. Afterwards, the pretreated DNA is amplified while using a polymerase and at least one primer. In the next step, the amplified genomic DNA is hybridized to at least one oligonucleotide while forming a duplex, and the same is lengthened by at least one nucleotide, whereby the nucleotide carries a detectable tagging, and the lengthening is subject to the methylation status of the respective cytosine in the genomic DNA sample. In the following step, the lengthened oligonucleotides are examined for the presence of the tagging . |
