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Appl Phys Lett. 2011 May 9;98(19):193702. Epub 2011 May 10.

Enhanced relative biological effectiveness of proton radiotherapy in tumor cells with internalized gold nanoparticles.


The development and use of sensitizing agents to improve the effectiveness of radiotherapy have long been sought to improve our ability to treat cancer. In this letter, we have studied the relative biological effectiveness of proton beam radiotherapy on prostate tumor cells with and without internalized gold nanoparticles. The effectiveness of proton radiotherapy for the killing of prostate tumor cells was increased by approximately 15%-20% for those cells containing internalized gold nanoparticles.

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