Related Experiment Video
Updated: Jun 21, 2026
16:24
Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells
Published on: February 21, 2014
Microarray analysis of altered gene expression in ERbeta-overexpressing HEK293 cells
Chunyan Zhao1, Milica Putnik, Jan-Ake Gustafsson
1Department of Biosciences and Nutrition, NOVUM, Karolinska Institutet, 141 57, Huddinge, Sweden. chunyan.zhao@ki.se
Endocrine
|August 15, 2009
Summary
Estrogen receptor beta (ERbeta) independently suppresses breast cancer cell proliferation by regulating key genes. This study identified 332 ERbeta-upregulated and 210 ERbeta-downregulated genes, highlighting ERbeta's antiproliferative role.
Area of Science:
- Endocrinology
- Molecular Biology
- Genomics
Background:
- Estrogen receptors (ERs), including ERalpha and ERbeta, are crucial mediators of estrogen's effects in various tissues.
- Microarray techniques have advanced the understanding of ERalpha and ERbeta interplay in breast cancer cell lines.
Purpose of the Study:
- To investigate ERbeta-dependent gene regulation independently of ERalpha.
- To identify primary ERbeta target genes and elucidate ERbeta's role in cell proliferation.
Main Methods:
- Microarray analysis was performed on HEK293/mock and HEK293/ERbeta cells.
- Chromatin immunoprecipitation assays were used to identify direct ERbeta target genes.
- Proliferation assays were conducted to assess the functional impact of ERbeta expression.
Main Results:
- Microarray analysis identified 332 ERbeta-upregulated and 210 ERbeta-downregulated genes involved in cell signaling, morphogenesis, and proliferation.
- ERbeta expression significantly decreased cell proliferation.
- Chromatin immunoprecipitation identified 12 primary ERbeta target genes, including ILRAP, TMSB4X, and ENPP2.
Conclusions:
- ERbeta exhibits an antiproliferative role independent of ERalpha.
- This study provides novel insights into ERbeta's gene regulatory functions and identifies key ERbeta target genes.
