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Methylation-specific ligation detection reaction (msLDR): a new approach for multiplex evaluation of methylation patterns

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons50096

Bergmann,  T.
Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons50409

Lehrach,  H.
Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons50130

Dahl,  A.
Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Zitation

Bormann, F., Sers, C., Seliger, B., Handke, D., Bergmann, T., Seibt, S., et al. (2011). Methylation-specific ligation detection reaction (msLDR): a new approach for multiplex evaluation of methylation patterns. Molecular Genetics and Genomics: MGG, 286(3-4), 279-91. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/21879293 http://www.springerlink.com/content/eq76180447161h22/fulltext.pdf.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-78C8-E
Zusammenfassung
A new sensitive method for multiplex gene-specific methylation analysis was developed using a ligation-based approach combined with a TaqMan-based detection and readout employing universal reporter probes. The approach, termed methylation-specific Ligation Detection Reaction (msLDR), was applied to test 16 loci in 8 different colorectal cancer cells in parallel. These loci encode immune regulatory genes involved in T-cell and natural killer cell activation, whose silencing is associated with the development or progression of colorectal cancer. Parallel analysis of HLA-A, HLA-B, STAT1, B2M, LMP2, LMP7, PA28alpha, TAP1, TAP2, TAPBP, ULBP2 and ULBP3 by msLDR in eight colorectal cancer cell lines showed preferential methylation at the HLA-B, ULBP2 and ULBB3 loci, but not at the other loci. MsLDR was found to represent a suitable and sensitive method for the detection of distinct methylation patterns as validated by conventional bisulphite Sanger sequencing and COBRA analysis. Since gene silencing by epigenetic mechanisms plays a central role during transformation of a normal differentiated somatic cell into a cancer cell, characterization of the gene methylation status in tumours is a major topic not only in basic research, but also in clinical diagnostics. Due to a very simple workflow, msLDR is likely to be applicable to clinical samples and thus comprises a potential diagnostic tool for clinical purposes.