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Series GSE46843 Query DataSets for GSE46843
Status Public on Jan 13, 2014
Title Obesity primes the enhancer landscape of colon epithelium for cancer
Organism Mus musculus
Experiment type Expression profiling by array
Summary High-fat diet and obesity are high risk factors for colorectal cancer. The underlying mechanism is still unclear. Environmental factors alter the epigenome to affect gene expression thus the phenotype. In response to external stimuli, the cis-regulatory regions, especially enhancer loci, are key elements for regulating selective gene expression. We thus explored the effects of high-fat diet and the accompanying obesity on gene expression and the enhancer landscape in colon epithelium. High-fat diet exposed binding sites of transcription factors downstream of signaling pathways important in the initiation and progression of colon cancer. Meantime, colon-specific enhancers were lost rendering the cells potential for dedifferentiation. The alteration at enhancer regions drives a specific transcription program promoting colon cancer progression. The comprehensive interrogation of enhancer changes by high-fat diet in colon epithelium provides a number of insights into the underlying biology of high-fat diet and obesity in increasing colon cancer risk, and provides potential therapeutic targets to treat obese colon cancer patients.
Overall design We measured gene expression in colon epithelium from wild type mice and NAG-1 (non-steroidal anti-inflammatory drug (NSAID)-activated gene-1) transgenic mice fed either a 10% fat diet (LF) or a 60% fat diet (HF) for 20 weeks, using Agilent Whole Mouse Genome 4x44 multiplex format oligo arrays (014868) (Agilent Technologies) following the Agilent 1-color microarray-based gene expression analysis protocol.

The ChIP-seq component of the study is included in GSE46748.
Contributor(s) Li R, Mav D, Wade PA, Shah RR
Citation(s) 24703701
Submission date May 10, 2013
Last update date Jan 12, 2017
Contact name Deepak Mav
Organization name Sciome LLC
Street address 2 Davis Drive
City Research Triangle Park
State/province NC
ZIP/Postal code 27709
Country USA
Platforms (1)
GPL7202 Agilent-014868 Whole Mouse Genome Microarray 4x44K G4122F (Probe Name version)
Samples (11)
GSM1139081 WT-LF-rep1
GSM1139082 WT-LF-rep2
GSM1139083 NAG-1-LF-rep1
BioProject PRJNA202451

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE46843_RAW.tar 99.5 Mb (http)(custom) TAR (of TXT)
Processed data included within Sample table

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