Human Gene Set: BENPORATH_ES_WITH_H3K27ME3


Standard name BENPORATH_ES_WITH_H3K27ME3
Systematic name M10371
Brief description Set 'H3K27 bound': genes posessing the trimethylated H3K27 (H3K27me3) mark in their promoters in human embryonic stem cells, as identified by ChIP on chip.
Full description or abstract Cancer cells possess traits reminiscent of those ascribed to normal stem cells. It is unclear, however, whether these phenotypic similarities reflect the activity of common molecular pathways. Here, we analyze the enrichment patterns of gene sets associated with embryonic stem (ES) cell identity in the expression profiles of various human tumor types. We find that histologically poorly differentiated tumors show preferential overexpression of genes normally enriched in ES cells, combined with preferential repression of Polycomb-regulated genes. Moreover, activation targets of Nanog, Oct4, Sox2 and c-Myc are more frequently overexpressed in poorly differentiated tumors than in well-differentiated tumors. In breast cancers, this ES-like signature is associated with high-grade estrogen receptor (ER)-negative tumors, often of the basal-like subtype, and with poor clinical outcome. The ES signature is also present in poorly differentiated glioblastomas and bladder carcinomas. We identify a subset of ES cell-associated transcription regulators that are highly expressed in poorly differentiated tumors. Our results reveal a previously unknown link between genes associated with ES cell identity and the histopathological traits of tumors and support the possibility that these genes contribute to stem cell-like phenotypes shown by many tumors.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 18443585   Authors: Ben-Porath I,Thomson MW,Carey VJ,Ge R,Bell GW,Regev A,Weinberg RA
Exact source Table 1S: H3K27 bound
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Source species Homo sapiens
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identifier namespace		 Human_NCBI_Gene_ID
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