2015 Researcher Paula Foster

“Investigating the impact of radiation-induced damage on promoting metastatic tumour growth in the brain”

Dr. Paula Foster, Scientist/Associate Professor, Medical Biophysics, University of Western Ontario/Robarts Research Institute 

Project Summary:

Brain metastasis occurs in 25-50% of metastatic breast cancer patients. The prospect of being diagnosed with brain metastases is terrifying; the median time from diagnosis with brain metastases to death is between 1 and 6 months, depending on the extent of metastases and how they are managed. Whole brain radiotherapy (WBRT) is standard treatment for breast cancer patients with multiple brain metastases.  In this scenario the healthy brain tissue receives significant doses of radiation. Radiotherapy is known to have multiple negative consequences in normal brain including tissue death, cognitive deficits and inflammation.  

Inflammation caused by radiotherapy is now known to promote metastasis, cancer cell migration and invasiveness.  In this project we will use two mouse models of triple negative breast cancer brain metastasis along with advanced MRI techniques to monitor the impact of WBRT-induced inflammation on the arrest and persistence of metastatic cancer cells in the brain and the development of brain metastases.  

It is crucial to understand whether radiotherapy induced inflammation in the healthy brain enhances the development of brain metastases. Our results will provide an understanding of the influence that radiotherapy has on brain tumour development and whether radiotherapy could be improved by the addition of anti-inflammatory agents.

 

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