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MicroRNA that could be used to suppress prostate cancer progression found
Date:5/16/2014

CINCINNATIAbout one in seven men will develop prostate cancer over the course of a lifetime, and about one in 36 men will die from it.

This is why findings by Cincinnati Cancer Center researchers, showing that a tumor suppressive microRNA, when activated by an anti-estrogen drug, could contribute to development of future targeted therapies, are important.

These findings are published in the May 16, 2014 edition of the journal PLOS ONE.

"MicroRNAs, or miRNAs, are short RNA molecules that play a prominent role in regulating gene expression. One miRNA can target multiple genes, but their expression is often hijacked by cancer cells and disrupts multiple cancer-causing or tumor-suppressing pathways," says Shuk-Mei Ho, PhD, director of the CCC and Jacob G. Schmidlapp Chair of Environmental Health and professor at the University of Cincinnati (UC) College of Medicine.

She along with Ricky Y.K. Leung, PhD, member of the CCC, assistant research professor in the department of environmental health and member of the UC Cancer Institute, and their team identified a new miRNA, known as hsa-miR-765, which is specifically activated by a Food and Drug Administration (FDA)-approved anti-estrogen drug (fulvestrant).

"This miRNA suppresses expression of HMGA1, a gene that was shown in previous studies to be associated with prostate cancer progression and recurrence," says Leung. "These findings do not only contribute to new insights on the effects of anti-estrogen but also the potential of using miRNA for monitoring drug efficacy and for future RNA-based therapy developments.

"This study also highlights the potential use of this anti-estrogen or miRNA in patients with recurrent prostate cancer, for whom there is no treatment, and raises the possibility of using anti-estrogen or miRNA treatments in preventing or slowing progression for primary prostate cancer."

Using cultured prostate cancer specimens fro
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Contact: Katie Pence
katie.pence@uc.edu
513-558-4561
University of Cincinnati Academic Health Center
Source:Eurekalert

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