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Gene Linked With Prevention of Cancer Recurrence Actually Worsens Some Breast Cancers

by Kathy Jones on April 18, 2013 at 8:19 PM
 Gene Linked With Prevention of Cancer Recurrence Actually Worsens Some Breast Cancers

A new study published in the journal Endocrinology reports on a study conducted by researchers at Western University's Schulich School of Medicine & Dentistry who found that KISS 1 metastasis suppressor gene, which has been known to prevent the spread of cancer, actually worsens some breast cancers.

Moshmi Bhattacharya, an associate professor in the Departments of Physiology and Pharmacology, and Oncology, was surprised to find high levels of kisspeptins in aggressive breast cancers. "We found kisspeptins could turn non-invasive cancer cells into invasive cells, and therefore could be playing a role in the metastasis of breast cancer."

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The paper's first author Donna Cvetkovic, a graduate student working with Bhattacharya, says they were also able to pinpoint what triggered kisspeptin to act in this unusual fashion. "Typically breast cancers are classified as being estrogen receptor-positive or estrogen receptor-negative. In estrogen receptor-negative cells we found that kisspeptin significantly increased invasiveness. However in cells that still expressed estrogen, kisspeptin does not lead to invasion," says Cvetkovic. "We believe that estrogen is acting as a brake, and when patients lose their estrogen receptor, it allows kisspeptin to behave in a non-typical fashion."

"As for clinical applications, testing to see whether the kisspeptin receptor is present or not, could provide us with an idea of whether the breast cancer will become more aggressive and thereby more metastatic," says Bhattacharya, a New Investigator with the Canadian Institutes of Health Research (CIHR) which funded this study. She also believes kisspeptins could be a good therapeutic target.



Source: Eurekalert
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