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Series GSE13009 Query DataSets for GSE13009
Status Public on May 26, 2009
Title MCF7 EGF, HRG stimulation
Organism Homo sapiens
Experiment type Expression profiling by array
Summary Sharing common ErbB/HER receptor signaling pathway, heregulin (HRG) induces differentiation of MCF-7 breast cancer cells while epidermal growth factor (EGF) elicits proliferation. Although the cell fate led by those two ligands was totally different, the gene expression profile in early transcription was unexpectedly qualitatively similar, suggesting that the gene expression in late transcription, not early transcription, may reflect a respect of ligand specificity. In this study, based on the data from time-course microarray of all human genes, we predicted and determined a series of transcription factors which may control HRG-specific timed-late transcription and cellular differentiation of MCF-7 cells. Validation analyses showed that one of activator protein 1 (AP-1) families appeared just after c-Fos expression, another AP-1 family partner, induced expression of another transcription factor through activation of AP-1 complex. Furthermore, expression of this transcription factors caused suppression of extracellular signal-regulated kinase (ERK) phosphorylation which is sustainedly regulated by HRG-initiated ErbB signaling. Overall, our analysis indicated an importance of formation of timed-transcriptional regulatory network and its function to control upstream signaling pathway through negative feedback for cellular differentiation.

Keywords: growth hormone response, time course
Overall design MCF7 human breast cancer cells were stimulated by the growth hormone (epidermal growth factor (EGF) or heregulin (HRG)). Control was set as non-treated cells.
Citation(s) 19925682, 25491268
Submission date Oct 01, 2008
Last update date Dec 06, 2018
Contact name Mariko Okada
Organization name RIKEN RCAI
Lab Laboratory for Cellular Systems Modeling
Street address W518, 1-7-22, Suehiro-cho, Tsurumi-ku
City Yokohama
ZIP/Postal code 230-0045
Country Japan
Platforms (1)
GPL571 [HG-U133A_2] Affymetrix Human Genome U133A 2.0 Array
Samples (69)
GSM325937 Control
GSM325938 EGF 00h10m rep1
GSM325939 EGF 00h10m rep2
BioProject PRJNA112545

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Supplementary file Size Download File type/resource
GSE13009_RAW.tar 146.6 Mb (http)(custom) TAR (of CEL)
Processed data included within Sample table

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