| Literature DB >> 27846393 |
Ana C Queirós1, Renée Beekman2, Roser Vilarrasa-Blasi1, Martí Duran-Ferrer1, Guillem Clot2, Angelika Merkel3, Emanuele Raineri3, Nuria Russiñol4, Giancarlo Castellano2, Sílvia Beà2, Alba Navarro2, Marta Kulis1, Núria Verdaguer-Dot4, Pedro Jares5, Anna Enjuanes6, María José Calasanz7, Anke Bergmann8, Inga Vater9, Itziar Salaverría2, Harmen J G van de Werken10, Wyndham H Wilson11, Avik Datta12, Paul Flicek12, Romina Royo13, Joost Martens14, Eva Giné15, Armando Lopez-Guillermo15, Hendrik G Stunnenberg14, Wolfram Klapper16, Christiane Pott17, Simon Heath3, Ivo G Gut3, Reiner Siebert9, Elías Campo18, José I Martín-Subero19.
Abstract
We analyzed the in silico purified DNA methylation signatures of 82 mantle cell lymphomas (MCL) in comparison with cell subpopulations spanning the entire B cell lineage. We identified two MCL subgroups, respectively carrying epigenetic imprints of germinal-center-inexperienced and germinal-center-experienced B cells, and we found that DNA methylation profiles during lymphomagenesis are largely influenced by the methylation dynamics in normal B cells. An integrative epigenomic approach revealed 10,504 differentially methylated regions in regulatory elements marked by H3K27ac in MCL primary cases, including a distant enhancer showing de novo looping to the MCL oncogene SOX11. Finally, we observed that the magnitude of DNA methylation changes per case is highly variable and serves as an independent prognostic factor for MCL outcome.Entities:
Keywords: ChIP-seq; DNA looping; DNA methylation; SOX11; chromatin; enhancer; epigenomics; lymphoma; mantle cell lymphoma; whole-genome bisulfite sequencing
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Year: 2016 PMID: 27846393 PMCID: PMC5805090 DOI: 10.1016/j.ccell.2016.09.014
Source DB: PubMed Journal: Cancer Cell ISSN: 1535-6108 Impact factor: 31.743