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Researchers at the University of California, San Diego have developed a novel method of disguising nanoparticles as red blood cells, which will enable them to evade the body’s immune system and deliver cancer-fighting drugs straight to a tumor.

The method involves collecting the membrane from a red blood cell and wrapping it like a powerful camouflaging cloak around a biodegradable polymer nanoparticle stuffed with a cocktail of small molecule drugs. Nanoparticles are less than 100 nanometers in size, about the same size as a virus.

“This is the first work that combines the natural cell membrane with a synthetic nanoparticle for drug delivery applications.” said Liangfang Zhang, a nanoeningeering professor at the UC San Diego Jacobs School of Engineering and Moores UCSD Cancer Center. “This nanoparticle platform will have little risk of immune response”.

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