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Nat Genet. 2006 Dec;38(12):1386-96. Epub 2006 Nov 12.

Regional copy number-independent deregulation of transcription in cancer.

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  • 1UMR 144 Centre National de la Recherche Scientifique (CNRS)/Institut Curie, 75248 Paris Cedex 05, France.

Erratum in

  • Nat Genet. 2008 Mar;40(3):373.

Abstract

Genetic and epigenetic alterations have been identified that lead to transcriptional deregulation in cancers. Genetic mechanisms may affect single genes or regions containing several neighboring genes, as has been shown for DNA copy number changes. It was recently reported that epigenetic suppression of gene expression can also extend to a whole region; this is known as long-range epigenetic silencing. Various techniques are available for identifying regional genetic alterations, but no large-scale analysis has yet been carried out to obtain an overview of regional epigenetic alterations. We carried out an exhaustive search for regions susceptible to such mechanisms using a combination of transcriptome correlation map analysis and array CGH data for a series of bladder carcinomas. We validated one candidate region experimentally, demonstrating histone methylation leading to the loss of expression of neighboring genes without DNA methylation.

PMID:
17099711
[PubMed - indexed for MEDLINE]
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