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Why cancer cells just won't die: Researcher identifies protein which regulates cell suicide

Date:
December 10, 2009
Source:
University of Western Ontario
Summary:
When cells experience DNA damage, they'll try to repair it. But if that fails, the damaged cells are supposed to self-destruct, a process called apoptosis. A cancer researcher has identified a protein that regulates apoptosis, a new discovery which has implications for both the diagnosis and treatment of cancer.
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When cells experience DNA damage, they'll try to repair it. But if that fails, the damaged cells are supposed to self-destruct, a process called apoptosis. A cancer researcher at Robarts Research Institute at The University of Western Ontario has identified a protein that regulates apoptosis, a new discovery which has implications for both the diagnosis and treatment of cancer.

Caroline Schild-Poulter's findings are now published online in the journal Molecular Cancer Research.

"The protein we've identified, RanBPM, is directly involved in activating apoptosis," explains Schild-Poulter who is also an assistant professor in the Department of Biochemistry at Western's Schulich School of Medicine & Dentistry. "One of the hallmarks of cancer is that the cells don't initiate apoptosis despite having defects in their genetic material. In other words the damaged cells do not commit suicide, and this develops into cancer. Failure to activate apoptosis also makes it difficult to cure cancer. You cannot kill these cells by causing DNA damage to them using chemotherapy or radiation, because these cells resist dying."

While more research is needed to fully understand how this protein functions, Schild-Poulter believes RanBPM could be targeted to re-activate apoptosis, killing cancer cells. The protein may also be a marker used to predict whether a tumour will go on to become malignant.

Schild-Poulter holds the position of "Fuller Scientist" at Robarts Research. Her research is funded through a donation from Marilynne Fuller, whose husband Robert died of cancer in 2002.


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The above post is reprinted from materials provided by University of Western Ontario. Note: Materials may be edited for content and length.


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University of Western Ontario. "Why cancer cells just won't die: Researcher identifies protein which regulates cell suicide." ScienceDaily. ScienceDaily, 10 December 2009. <www.sciencedaily.com/releases/2009/12/091209114158.htm>.
University of Western Ontario. (2009, December 10). Why cancer cells just won't die: Researcher identifies protein which regulates cell suicide. ScienceDaily. Retrieved August 3, 2015 from www.sciencedaily.com/releases/2009/12/091209114158.htm
University of Western Ontario. "Why cancer cells just won't die: Researcher identifies protein which regulates cell suicide." ScienceDaily. www.sciencedaily.com/releases/2009/12/091209114158.htm (accessed August 3, 2015).

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