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Possible new treatment for Ewing sarcoma
Date:11/26/2012

SALT LAKE CITY Discovery of a new drug with high potential to treat Ewing sarcoma, an often deadly cancer of children and young adults, and the previously unknown mechanism behind it, come hand-in-hand in a new study by researchers from Huntsman Cancer Institute (HCI) at the University of Utah. The report appears in today's online issue of the journal Oncogene.

"Ewing sarcoma is almost always caused by a cancer-causing protein called EWS/FLI," said Stephen Lessnick, M.D., Ph.D., director of HCI's Center for Children's Cancer Research, professor in the Department of Pediatrics at the University of Utah School of Medicine, and an HCI investigator.

In the lab, Lessnick and his colleagues found that an enzyme, called lysine specific demethylase (LSD-1), interacts with EWS/FLI to turn off gene expression in Ewing sarcoma. By turning off specific genes, the EWS/FLI-LSD1 complex causes Ewing sarcoma development. "This makes LSD-1 an important target for the development of new drugs to treat Ewing sarcoma," Lessnick said.

"For a long time, we've known that EWS/FLI works by binding to DNA and turning on genes that activate cancer formation," said Lessnick. "It was a surprise to find out that it turns genes off as well.

"The beauty, if there's anything beautiful about a nasty disease like this, is that if we can inhibit EWS/FLI, we can inhibit this cancer, because EWS/FLI is the master regulator of Ewing sarcoma," Lessnick added.

While Lessnick and his colleagues worked on EWS/FLI in their basic science lab, Sunil Sharma, M.D., director of HCI's Center for Investigational Therapeutics, professor in the Department of Medicine at the University of Utah, and an HCI investigator, had already focused on LSD-1 as a possible target for new cancer treatments and had been working for several years to design drugs that would inhibit its actions.

"We had found that LSD-1 was important for regulation of a variety of p
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Contact: Linda Aagard
801-587-7639
University of Utah Health Sciences
Source:Eurekalert

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