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Altering cancer transcriptomes using epigenomic inhibitors [Illumina beadchip]

ABSTRACT: We have compared the genome-wide effects on the transcriptome after treatment with ICG-001 (the specific CBP inhibitor) versus C646, a compound that competes with acetyl-coA for the Lys-coA binding pocket of both CBP and p300. We found that both drugs cause large-scale changes in the transcriptome of HCT116 colon cancer cells and PANC1 pancreatic cancer cells, and reverse some tumor-specific changes in gene expression. Interestingly, although the epigenetic inhibitors affect cell cycle pathways in both the colon and pancreatic cancer cell lines, the WNT signaling pathway was affected only in the colon cancer cells. Notably, WNT target genes were similarly down-regulated after treatment of HCT116 with C646 as with ICG-001.

ORGANISM(S): Homo sapiens

PROVIDER: GSE64038 | GEO | 2015/01/07

SECONDARY ACCESSION(S): PRJNA269947

REPOSITORIES: GEO

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Altering cancer transcriptomes using epigenomic inhibitors [Illumina beadchip]

Project description:We have compared the genome-wide effects on the transcriptome after treatment with ICG-001 (the specific CBP inhibitor) versus C646, a compound that competes with acetyl-coA for the Lys-coA binding pocket of both CBP and p300. We found that both drugs cause large-scale changes in the transcriptome of HCT116 colon cancer cells and PANC1 pancreatic cancer cells, and reverse some tumor-specific changes in gene expression. Interestingly, although the epigenetic inhibitors affect cell cycle pathways in both the colon and pancreatic cancer cell lines, the WNT signaling pathway was affected only in the colon cancer cells. Notably, WNT target genes were similarly down-regulated after treatment of HCT116 with C646 as with ICG-001. Total RNA obtained from isolated HCT116 or PANC1 cell lines were treated with 10uM ICG-001, 10uM C646, or 0.05% DMSO and collected after 12 or 96 hours.

2015-01-07 | E-GEOD-64038 | biostudies-arrayexpress

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