Abstract
The estrogens play important role in the homeostatic maintenance of several target tissues including those in the mammary gland, uterus, bone, cardiovascular system, and brain. Most of estrogens action is thought to be mediated through its nuclear estrogen receptors, ERα and ERβ, which are members of the nuclear receptor superfamily that act as ligand-induced transcription factors. Acting via its receptors, estrogen also plays an essential role in the development and progression of human breast cancer. The ER and progesterone receptor (PR), which are regulated by estrogen via ER, have been used as prognostic markers in the clinical management of breast cancer patients. However, the prognosis of a patient with ER+/PR+ breast cancer can be highly variable and a significant proportion of hormone receptor positive breast cancers does not respond to endocrine therapy. The identification of estrogen receptor target genes may improve our understanding of the role played by estrogens in breast cancer making it possible to better tailor hormone treatments and improve a patients response to hormonal therapy. In this review, we explore the literature for data regarding the identification of estrogen receptor-regulated genes in breast cancer cell lines and breast tumor biopsies using high throughput technologies such as serial analysis of gene expression (SAGE) and cDNA microarrays.
Keywords: Breast cancer, estrogen receptor, prognostic marker, gene expression profiling
Mini-Reviews in Medicinal Chemistry
Title: Gene Expression Profiles in Breast Cancer to Identify Estrogen Receptor Target Genes
Volume: 8 Issue: 5
Author(s): M. A. Nagai and M. M. Brentani
Affiliation:
Keywords: Breast cancer, estrogen receptor, prognostic marker, gene expression profiling
Abstract: The estrogens play important role in the homeostatic maintenance of several target tissues including those in the mammary gland, uterus, bone, cardiovascular system, and brain. Most of estrogens action is thought to be mediated through its nuclear estrogen receptors, ERα and ERβ, which are members of the nuclear receptor superfamily that act as ligand-induced transcription factors. Acting via its receptors, estrogen also plays an essential role in the development and progression of human breast cancer. The ER and progesterone receptor (PR), which are regulated by estrogen via ER, have been used as prognostic markers in the clinical management of breast cancer patients. However, the prognosis of a patient with ER+/PR+ breast cancer can be highly variable and a significant proportion of hormone receptor positive breast cancers does not respond to endocrine therapy. The identification of estrogen receptor target genes may improve our understanding of the role played by estrogens in breast cancer making it possible to better tailor hormone treatments and improve a patients response to hormonal therapy. In this review, we explore the literature for data regarding the identification of estrogen receptor-regulated genes in breast cancer cell lines and breast tumor biopsies using high throughput technologies such as serial analysis of gene expression (SAGE) and cDNA microarrays.
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Cite this article as:
Nagai A. M. and Brentani M. M., Gene Expression Profiles in Breast Cancer to Identify Estrogen Receptor Target Genes, Mini-Reviews in Medicinal Chemistry 2008; 8 (5) . https://dx.doi.org/10.2174/138955708784223503
DOI https://dx.doi.org/10.2174/138955708784223503 |
Print ISSN 1389-5575 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5607 |
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