Magnetically activated nanoparticles have been researched as a tool for killing tumors in the past, but generally the mechanism of action was using a magnetic field to resonate and heat up the nanoparticles and so kill the neoplasm. This can expose nearby healthy tissue to dangerous levels of heat, especially when the nanoparticles miss their cancer target. Researchers at Lund University in Sweden just reported in journal ACS Nano on a new method of using superparamagnetic iron oxide nanoparticles to coerce the tumor cells to kill themselves.
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