Unknown,Transcriptomics,Genomics,Proteomics

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Human cholangiocarcinoma (CC), ECC (extrahepatic CC) and ICC (intrahepatic CC) cases versus control


ABSTRACT: CpG island methylation profiling of human cholangiocarcinoma, ECC and ICC, cases compared to matched normal controls or to pools of corresponding normal controls. Goal was to identify cholangiocarcinoma-specific differentially methylated regions (DMRs). Highly methylated DNA from cases and controls was enriched by methyl CpG-immunoprecipitation (MCIp) and co-hybridized. DMRs were defined by stepwise stringent criteria such as selecting top 5% vicinal array probes only. ECC- and ICC-specific and common DMRs were identified.

ORGANISM(S): Homo sapiens

SUBMITTER: Dieter Weichenhan 

PROVIDER: E-GEOD-44965 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications


<h4>Unlabelled</h4>The molecular mechanisms underlying the genesis of cholangiocarcinomas (CCs) are poorly understood. Epigenetic changes such as aberrant hypermethylation and subsequent atypical gene expression are characteristic features of most human cancers. In CC, data regarding global methylation changes are lacking so far. We performed a genome-wide analysis for aberrant promoter methylation in human CCs. We profiled 10 intrahepatic and 8 extrahepatic CCs in comparison to non-neoplastic b  ...[more]

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