Alessandro Rettino
United Kingdom
Research Article
Genome-wide Identification of IRF1 Binding Sites Reveals Extensive Occupancy at Cell Death Associated Genes
Author(s): Alessandro Rettino and Nicole M ClarkeAlessandro Rettino and Nicole M Clarke
IRF1 is a transcription factor involved in interferon signaling and has been shown to harbor tumor suppressor
activity. In order to comprehensively identify pathways regulated by IRF1, we used chromatin immunoprecipitation
followed by massive-parallel sequencing (ChIP-seq) to evaluate the gene targets of IRF1 genome-wide. We
identified 17,416 total binding events in breast cancer cells. Functional categorization of the binding sites after IFNgamma
(interferon-gamma) treatment determined that ‘apoptosis’ or ‘cell death’ is the most enriched target process.
Motif discovery analysis of the chromosomal regions bound by IRF1 identified a number of unique motifs correlated
with apoptosis, DNA damage and immune processes. Analysis of GEO transcriptome data from IRF1-transduced
cells or IFN-gamma treated fibroblasts indicates that IRF1-bound targets in IFN-treated .. View More»
DOI:
10.4172/2157-2518.S6-009