E-GEOD-10800 - Genome-wide Binding Site Mapping of Estrogen Receptor alpha and c-MYC in Breast Cancer Cells

Submitted on 12 March 2008, released on 26 May 2010, last updated on 27 March 2012
Homo sapiens
Samples (63)
Arrays (7)
Protocols (7)
Estrogens are steroid hormones that play critical roles in the initiation, development, and metastasis of breast and uterine cancers. The estrogen (E2) response in breast cancer cells is predominantly mediated by the estrogen receptor-alpha (ER alpha), a ligand-activated transcription factor. ER alpha regulates transcription of target genes through direct binding to its cognate recognition sites, known as estrogen response elements (EREs), or by modulating the activity of other DNA-bound transcription factors at alternative DNA sequences. The proto-oncogene c-myc is upregulated by ER¦Á in response to E2 and encodes a transcription factor, c-MYC, which regulates a cascade of gene targets whose products mediate cellular transformation. This study aims at mapping the binding sites of these two transcription factors (ER alpha and c-MYC) in one ER alpha positive breast cancer cell line (MCF7 cell line). Keywords: ChIP-Chip Analysis This series contains ChIP-on-Chip data sets for two transcription factors (ER alpha and c-MYC) and control samples (INPUT). All the experiments are done in triplicates. MCF7 Cells were E2-deprived for 3 days and then were treated with 10 nM E2 (45 minutes and 2 hours for mapping ER alpha and c-MYC binding sites, respectively) at 80% confluence.
Experiment type
ChIP-chip by tiling array 
Genomic analysis of estrogen cascade reveals histone variant H2A.Z associated with breast cancer progression. Hua S, Kallen CB, Dhar R, Baquero MT, Mason CE, Russell BA, Shah PK, Liu J, Khramtsov A, Tretiakova MS, Krausz TN, Olopade OI, Rimm DL, White KP.