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High-throughput hacking of the methylation patterns in breast cancer by in vitro transcription and thymidine-specific cleavage mass array on MALDI-TOF silico-chip

Radpour, Ramin and Haghighi, Mahdi Montazer and Fan, Alex Xiu-Cheng and Torbati, Peyman Mohammadi and Hahn, Sinuhe and Holzgreve, Wolfgang and Zhong, Xiao Yan. (2008) High-throughput hacking of the methylation patterns in breast cancer by in vitro transcription and thymidine-specific cleavage mass array on MALDI-TOF silico-chip. Molecular cancer research, Vol. 6. pp. 1702-1709.

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Official URL: http://edoc.unibas.ch/dok/A6003928

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Abstract

Over the last decade, the rapidly expanding interest in the involvement of DNA methylation in developmental mechanisms, human diseases, and malignancies has highlighted the need for an accurate, quantitative, and high-throughput assay. Existing methods are limited and are often too laborious for high-throughput analysis or inadequate for quantitative analysis of methylation. Recently, a MassCLEAVE assay has been developed using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry to analyze base-specific methylation patterns after bisulfite conversion. To find an efficient and more cost-effective high-throughput method for analyzing the methylation profile in breast cancer, we developed a method that allows for the simultaneous detection of multiple target CpG residues by using thymidine-specific cleavage mass array on matrix-assisted laser desorption/ionization time-of-flight silicon chips. We used this novel quantitative approach for the analysis of DNA methylation patterns of four tumor suppressor genes in 96 breast tissue samples from 48 patients with breast cancer. Each individual contributed a breast cancer specimen and corresponding adjacent normal tissue. We evaluated the accuracy of the approach and implemented critical improvements in experimental design.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Department of Biomedicine, University Hospital Basel > Prenatal Medicine (Hahn)
03 Faculty of Medicine > Departement Biomedizin > Former Units at DBM > Gynecological Oncology (Zhong)
UniBasel Contributors:Zhong, Xiao Yan and Hahn, Sinuhe
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:AACR
ISSN:1541-7786
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:26 Apr 2013 06:59
Deposited On:08 Nov 2012 16:15

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