Different denaturation rates between methylated and non-methylated genomic DNA can result in allele-specific PCR amplification

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Different denaturation rates between methylated and non-methylated genomic DNA can result in allele-specific PCR amplification

We analysed a DNA sample from a father and child who were both heterozygous for a 7 base pair insertion in the MEST gene differentially-methylated promoter region, previously shown by PCR analysis of bisulphite-treated DNA to be on the methylated allele in the unaffected father and the unmethylated allele in the affected child. PCR from genomic DNA was then carried out using a commercial PCR ki...

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Methylated and un-methylated control DNA is an important part of DNA methylation studies. Although human and mouse DNA methylation control sets are commercially available, in case of methylation studies on other species such as animals, plants, and bacteria, control sets need to be prepared. In this paper a simple method of generating methylated and un-methylated control DNA is described. Whole...

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Aberrant hypo-methylation of DNA is evident in a range of human diseases including cancer and diabetes. Development of sensitive assays capable of detecting traces of un-methylated DNA within methylated samples can be useful in several situations. Here we describe a new approach, fast-COLD-MS-PCR, which amplifies preferentially un-methylated DNA sequences. By employing an appropriate denaturati...

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Selective amplification in PCR is principally determined by the sequence of the primers and the temperature of the annealing step. We have developed a new PCR technique for distinguishing related sequences in which additional selectivity is dependent on sequences within the amplicon. A 5' extension is included in one (or both) primer(s) that corresponds to sequences within one of the related am...

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ژورنال

عنوان ژورنال: Open Journal of Genetics

سال: 2011

ISSN: 2162-4453,2162-4461

DOI: 10.4236/ojgen.2011.12003