Estrogen and Xenoestrogens in Breast Cancer

Author:

Fernandez S.V.1,Russo J.2

Affiliation:

1. Breast Cancer Research Laboratory, Fox Chase Cancer Center, Philadelphia, PA, USA

2. Breast Cancer Research Laboratory, Fox Chase Cancer Center, Philadelphia, PA, USA, jose.russo@fccc.edu

Abstract

There is growing concern that estrogenic environmental compounds that act as endocrine-disrupting chemicals might potentially have adverse effects on hormone-sensitive organs such as the breast. This concern is further fueled by evidence indicating that natural estrogens, specifically 17β-estradiol, are important factors in the initiation and progression of breast cancer. We have developed an in vitro—in vivo model in which we have demonstrated the carcinogenicity of E2 in human breast epithelial cells MCF-10F. Hypermethylation of NRG1, STXBP6, BMP6, CSS3, SPRY1, and SNIP were found at different progression stages in this model. The use of this powerful and unique model has provided a tool for exploring whether bisphenol A and butyl benzyl phthalate have relevance in the initiation of breast cancer. These studies provide firsthand evidence that the natural estrogen 17β-estradiol and xenoestrogenic substances like bisphenol A are able to induce neoplastic transformation in human breast epithelial cells.

Publisher

SAGE Publications

Subject

Cell Biology,Toxicology,Molecular Biology,Pathology and Forensic Medicine

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