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Methylated DNA Immunoprecipitation
Published on: January 2, 2009
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Genome-wide DNA methylation profiling: the mDIP-chip technology.
Yin Shen1, Shaun D Fouse, Guoping Fan
1Department of Human Genetics and Institute of Stem Cell Biology and Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA.
Methods in Molecular Biology (Clifton, N.J.)
|July 8, 2009
Summary
Aberrant DNA methylation, including hypermethylation and hypomethylation, is a hallmark of cancer. Methylated DNA immunoprecipitation (mDIP) coupled with microarrays offers a high-throughput method to map these crucial epigenetic changes genome-wide.
Area of Science:
- Oncology
- Epigenetics
- Genomics
Background:
- Aberrant DNA methylation is a key characteristic of cancer, involving both regional hypermethylation and global hypomethylation.
- Hypermethylation of tumor-suppressor gene promoters silences these genes, while hypomethylation can lead to genome instability.
- Epigenetic therapy using DNA demethylating agents can reverse promoter hypermethylation.
Purpose of the Study:
- To address the need for reliable high-throughput methods for genome-wide DNA methylation analysis.
- To better understand cancer initiation, progression, and the effects of epigenetic therapy.
Main Methods:
- Utilized methylated DNA immunoprecipitation (mDIP) coupled with microarray hybridization.
- Developed a strategy for mapping genome-wide DNA methylation patterns.
Main Results:
- Successfully mapped genome-wide DNA methylation patterns in different cell types.
- Demonstrated the efficacy of the mDIP-chip method for analyzing DNA methylation.
Conclusions:
- The mDIP-chip method provides a reliable high-throughput approach for genome-wide DNA methylation analysis.
- This technique is valuable for studying cancer epigenetics and evaluating epigenetic therapies.
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