Cite as: Cold Spring Harb. Protoc.; 2008; doi:10.1101/pdb.prot4974
| Protocol |
1 Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
2 Human Cancer Genetics Program, Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA
3Corresponding author (mestecio{at}mdanderson.org)
INTRODUCTION
This protocol describes the use of methylated CpG island amplification (MCA) in combination with a microarray platform to analyze genome-wide DNA methylation in a high-throughput fashion. In this approach, termed MCAM, methylated CpG islands are selectively targeted using oligonucleotide adaptors after two rounds of digestion with a combination of methylation-sensitive and methylation-insensitive nucleases. They are then amplified using PCR. The resulting amplicons, representing the methylated fraction of the genome, are labeled with fluorochromes. Subsequently, a comparative hybridization of reference and test samples (typically normal and tumor DNA specimens) is done on a microarray platform.
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