A University of Minnesota study has confirmed the pivotal role of an enzyme known as JNK2 in the development of nonmelanoma skin cancers. The findings suggest that JNK2 should be evaluated as a target for the prevention and treatment of such cancers. Lead author Zigang Dong, director of the university’s Hormel Institute in Austin, Minn., will present the work at 8:30 a.m. Sunday, July 13, at the American Association for Cancer Research meeting in the Washington Convention Center, 801 Mount Vernon Place NW, Washington, D.C.
Ultraviolet rays from the sun are the major culprit in skin cancer, which accounts for more than half the cancers in the United States. The process of cancer development involves a chain of interactions among biochemicals in the skin, and biochemicals that play key roles in carcinogenesis make potential therapeutic targets. Many human cancers show elevated activity in some form of JNK enzyme, and the enzyme is also activated by sunlight, Dong said.
"Even if one goes into the sun for a few minutes, the activity of JNK in the epidermis rises," said Dong. "If you go out for a few minutes, JNK activity doesn’t stay elevated. But it looks as though if a person gets too much sun exposure, JNK activity becomes permanently elevated and cancers develop. This study indicates that some form of JNK activity is a key step in the process by which nonmelanoma cancers grow."
Deane Morrison | EurekAlert!
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