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Mayo Clinic researchers find new molecule to target in pancreatic cancer treatment
Date:1/3/2013

JACKSONVILLE, Fla. Researchers at Mayo Clinic in Florida have identified a new target to improve treatment of pancreatic ductal adenocarcinoma cancer, which accounts for more than 95 percent of pancreatic cancer cases. This fast-growing, often lethal cancer is resistant to conventional chemotherapy. The findings are published in the Jan. 3 online issue of PLOS ONE.

The researchers decoded a molecular pathway that is switched "on" at all times, promoting accelerated growth of pancreatic tumors, and that discovery revealed ways to disable the pathway. They say one strategy could involve the use of the drug bortezomib, which is already approved for several human blood cancers.

"Targeting this pathway to decrease the proliferation of cancer cells may represent a new strategy for pancreatic cancer therapy," says the study's senior investigator, Peter Storz, Ph.D., a biochemist and molecular biologist at Mayo Clinic.

One feature of pancreatic cancer is increased activity of the transcription factor NF-kB, which turns on expression of genes that keep the cells proliferating and protect them from death. There are two pathways, known as the classical and alternative, by which NF-kB can be activated, and the researchers looked at the alternative pathway one in which NF-kB is activated differently, and which switches on other genes, compared to the classical signaling pathway. Both the classical and alternative pathways are active in pancreatic cancer.

The research team discovered that increased activity of the alternative NF-kB pathway results from suppression of TNF receptor-associated factor 2, or TRAF2. Loss of TRAF2 promotes f
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Contact: Kevin Punsky
punsky.kevin@mayo.edu
904-953-2299
Mayo Clinic
Source:Eurekalert

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