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GSE96641 Genome-wide Screen for Differentially Methylated Long Noncoding RNAs identifies Esrp2 and lncRNA Esrp2-as Regulated by Enhancer DNA Methylation with Prognostic Relevance for Human Breast Cancer

Contributors : Katharina Heilmann ; Reka Toth ; Caroline Bossmann ; Karin Klimo ; Christoph Plass ; Clarissa Gerh äuserSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusThe majority of long noncoding RNAs (lncRNAs) is still poorly characterized with respect to function, interactions with protein-coding genes, and mechanisms that regulate their expression. As for protein-coding RNAs, epigenetic deregulation of lncRNA expression by alterations in DNA methylation might contribute to carcinogenesis. To provide genome-wide information on lncRNAs aberrantly methylated in breast cancer we profiled tumors of the C3(1) SV40TAg mouse model by MCIp-seq (Methylated CpG Immunoprecipitation followed by sequencing). This approach detected 69 lncRNAs differentially methylated between tumor tissue and normal mammary glands, with 26 located in antisense orientation of a protein-coding gene. One of the hypomethylated lncRNAs, 1810019D21Rik (now called Esrp2-antisense (as)) was identified in proximity to the epithelial splicing regulatory protein 2 (Esrp2) that is significantly elevated in C3(1) tumors. ESRPs seem to have a dual role in carcinogenesis. Both gain and loss has been associated with poor prognosis in human cancers, but the mechanism regulating expression is not known. In-depth analyses indicate that coordinate overexpression of Esrp2 and Esrp2-as inversely correlates with DNA methylation. Luciferase reporter gene assays support co-expression...
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Mus musculus Source Type: research

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