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Study finds key link responsible for colon cancer initiation and metastasis
Date:11/11/2013

Chronic inflammation has long been known as a key risk factor for cancer---particularly colon cancer---but the exact mechanisms of how inflammation heightens the immune response, and ultimately influences the initiation and progression of cancer have remained elusive. It is well established that anti-inflammatory drugs, like aspirin, reduce the risk of colorectal cancer.

Now, an ASU research team led by Biodesign Institute executive director Dr. Ray DuBois, M.D., PhD, has shown that a key genetic culprit, called CXCR2, is implicated in the tumor formation, growth and progression in a mouse model of colon cancer.

"We have been trying for the past several years to understand the precise molecular links between inflammation and cancer, said DuBois. "We have demonstrated that CXCR2 mediates a critical step in the setup of the blood circulatory machinery that feeds tumor tissue. This provides an important new clue for the development of therapeutic targets to neutralize the effect of CXCR2 on colon cancer."

The DuBois' Laboratory for Inflammation and Cancer, which includes lead author Hiroshi Katoh, and colleagues Dingzhi Wang, Takiko Daikoku, Haiyan Sun, and Sudhansu K. Dey, published the results in the November 11 issue of Cancer Cell.

The results provide critical new clues toward the prevention of colorectal cancer, the second leading cause of cancer deaths in the U.S. Despite the availability of colonoscopy screening, the 5-year survival rate remains low, due to a large number patients presenting with advanced stages of the disease. Currently, there are no clinically available blood tests for the early detection of sporadic colon cancer.

Inflammation has long been associated with increasing one's risk for colon cancer. For instance, more than 20 percent of patients with a form of inflammatory bowel disease (IBD) develop colorectal cancer within 30 years of diagnosis. This colitis-associated cancer has a
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Contact: Joe Caspermeyer
joseph.caspermeyer@asu.edu
480-258-8972
Arizona State University
Source:Eurekalert  

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