Title |
Disruption of CTCF at the miR-125b1 locus in gynecological cancers
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Published in |
BMC Cancer, January 2012
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DOI | 10.1186/1471-2407-12-40 |
Pubmed ID | |
Authors |
Ernesto Soto-Reyes, Rodrigo González-Barrios, Fernanda Cisneros-Soberanis, Roberto Herrera-Goepfert, Víctor Pérez, David Cantú, Diddier Prada, Clementina Castro, Félix Recillas-Targa, Luis A Herrera |
Abstract |
In cancer cells, transcriptional gene silencing has been associated with genetic and epigenetic defects. The disruption of DNA methylation patterns and covalent histone marks has been associated with cancer development. Until recently, microRNA (miRNA) gene silencing was not well understood. In particular, miR-125b1 has been suggested to be an miRNA with tumor suppressor activity, and it has been shown to be deregulated in various human cancers. In the present study, we evaluated the DNA methylation at the CpG island proximal to the transcription start site of miR-125b1 in cancer cell lines as well as in normal tissues and gynecological tumor samples. In addition, we analyzed the association of CTCF and covalent histone modifications at the miR-125b1 locus. |
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