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Understanding the effects of chronic cadmium exposure on breast cancer *


Cadmium is a heavy metal that is found in the environment and enters our body through either dietary sources or cigarette smoke. Heavy metals, like cadmium tend to bioaccumulate and induce toxicities by interacting with organic compounds inside the cell. Recent studies have suggested that cadmium may play a role in breast cancer by activating the estrogen receptor (ER) (Antila1996, Stoica et al. 2000, Martin et al. 2003, Johnson et al. 2003). Data from our lab also suggest that acute exposure of cadmium promotes ER-dependent cell proliferation and induced ER target gene expression (i.e. cyclin D1, Cathepsin D, and c-myc). However the effects of chronic cadmium exposure are unclear and require further investigation. The current focus of this project is to understand how chronic exposure of cadmium affects breast cancer cell growth. To accomplish this, we have established a cadmium-breast cancer cell line (MCF-7 Cd) by maintaining parental ER+ MCF-7 cells in 10-7 M cadmium for over 3 months. By comparing the growth and gene expression patterns of MCF7-Cd and MCF7 cells, we hope to establish an understanding of how chronic cadmium exposure may contribute to the development of breast cancer.

* Legal Disclaimer: Chelation and Hyperbaric Therapy, Stem Cell Therapy, and other treatments and modalities mentioned or referred to in this web site are medical techniques that may or may not be considered “mainstream”. As with any medical treatment, results will vary among individuals, and there is no implication or guarantee that you will heal or achieve the same outcome as patients herein.

As with any procedure, there could be pain or other substantial risks involved. These concerns should be discussed with your health care provider prior to any treatment so that you have proper informed consent and understand that there are no guarantees to healing.

THE INFORMATION IN THIS WEBSITE IS OFFERED FOR GENERAL EDUCATIONAL PURPOSES ONLY AND DOES NOT IMPLY OR GIVE MEDICAL ADVICE. No Doctor/Patient relationship shall be deemed to have arisen simply by reading the information contained on these pages, and you should consult with your personal physician/care giver regarding your medical treatment before undergoing any sort of treatment or therapy.

Published on 12-11-2010
Authors: Esera Vegas and Maggie C. Louie
Source: FASEB J. April 2009