Novel method for high throughput DNA methylation marker evaluation using PNA-probe library hybridization and MALDI-TOF detection
Identifieur interne : 001637 ( Main/Exploration ); précédent : 001636; suivant : 001638Novel method for high throughput DNA methylation marker evaluation using PNA-probe library hybridization and MALDI-TOF detection
Auteurs : Philipp Schatz [Allemagne] ; Ju Rgen Distler [Allemagne] ; Kurt Berlin [Allemagne] ; Matthias Schuster [Allemagne]Source :
- Nucleic Acids Research [ 0305-1048 ] ; 2006.
Abstract
The methylation of CpG dinucleotides has become a topic of great interest in cancer research, and the methylation of promoter regions of several tumor suppressor genes has been identified as a marker of tumorigenesis. Evaluation of DNA methylation markers in tumor tissue requires hundreds of samples, which must be analyzed quantitatively due to the heterogeneous composition of biological material. Therefore novel, fast and inexpensive methods for high throughput analysis are needed. Here we introduce a new assay based on peptide nucleic acid (PNA)-library hybridization and subsequent MALDI-TOF analysis. This method is multiplexable, allows the use of standard 384 well automated pipetting, and is more specific and flexible than established methods, such as microarrays and MS-SNuPE. The approach was used to evaluate three candidate colon cancer methylation markers previously identified in a microarray study. The methylation of the genes Ade-nomatous polyposis coli (APC), glycogen synthase kinase-β-3 (GSK3β) and eyes absent 4 (EYA4) was analyzed in 12 colon cancer and 12 normal tissues. APC and EYA4 were confirmed as being differentially methylated in colon cancer patients whereas GSK3β did not show differential methylation.
Url:
DOI: 10.1093/nar/gkl218
Affiliations:
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Acids Res.</title><idno type="ISSN">0305-1048</idno><idno type="eISSN">1362-4962</idno><imprint><publisher>Oxford University Press</publisher><date type="published" when="2006">2006</date><biblScope unit="volume">34</biblScope><biblScope unit="issue">8</biblScope><biblScope unit="page" from="59">e59</biblScope><biblScope unit="page" to="59">e59</biblScope></imprint><idno type="ISSN">0305-1048</idno></series><idno type="istex">CA2EE5ECD4952540D85D456A61EC412973D29DEF</idno><idno type="DOI">10.1093/nar/gkl218</idno><idno type="local">gkl218</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0305-1048</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The methylation of CpG dinucleotides has become a topic of great interest in cancer research, and the methylation of promoter regions of several tumor suppressor genes has been identified as a marker of tumorigenesis. Evaluation of DNA methylation markers in tumor tissue requires hundreds of samples, which must be analyzed quantitatively due to the heterogeneous composition of biological material. Therefore novel, fast and inexpensive methods for high throughput analysis are needed. Here we introduce a new assay based on peptide nucleic acid (PNA)-library hybridization and subsequent MALDI-TOF analysis. This method is multiplexable, allows the use of standard 384 well automated pipetting, and is more specific and flexible than established methods, such as microarrays and MS-SNuPE. The approach was used to evaluate three candidate colon cancer methylation markers previously identified in a microarray study. The methylation of the genes Ade-nomatous polyposis coli (APC), glycogen synthase kinase-β-3 (GSK3β) and eyes absent 4 (EYA4) was analyzed in 12 colon cancer and 12 normal tissues. APC and EYA4 were confirmed as being differentially methylated in colon cancer patients whereas GSK3β did not show differential methylation.</div></front></TEI><affiliations><list><country><li>Allemagne</li></country><region><li>Berlin</li></region><settlement><li>Berlin</li></settlement></list><tree><country name="Allemagne"><region name="Berlin"><name sortKey="Schatz, Philipp" sort="Schatz, Philipp" uniqKey="Schatz P" first="Philipp" last="Schatz">Philipp Schatz</name></region><name sortKey="Berlin, Kurt" sort="Berlin, Kurt" uniqKey="Berlin K" first="Kurt" last="Berlin">Kurt Berlin</name><name sortKey="Distler, Ju Rgen" sort="Distler, Ju Rgen" uniqKey="Distler J" first="Ju Rgen" last="Distler">Ju Rgen Distler</name><name sortKey="Schuster, Matthias" sort="Schuster, Matthias" uniqKey="Schuster M" first="Matthias" last="Schuster">Matthias Schuster</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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