Friday, January 16, 2015

Bioscientists Create Tumor Extracting NanoVelcro Chip to Purify Diseased Blood Cells

""An international group led by scientists at UCLA’s California NanoSystems Institute has developed a new method for effectively extracting and analyzing cancer cells circulating in patients’ blood.
Circulating tumor cells are cancer cells that break away from tumors and travel in the blood, looking for places in the body to start growing new tumors called metastases. Capturing these rare cells would allow doctors to detect and analyze the cancer so they could tailor treatment for individual patients.
In his laboratory at the UCLA California NanoSystems Institute, Hsian-Rong Tseng, a professor of molecular and medical pharmacology, used a device he invented to capture circulating tumor cells from blood samples.
The device, called the NanoVelcro Chip, is a postage-stamp–sized chip with nanowires that are 1,000 times thinner than a human hair and are coated with antibodies that recognize circulating tumor cells. When 2 milliliters of blood are run through the chip, the tumor cells stick to the nanowires like Velcro.
Capturing the tumor cells was just part of the battle, though. To analyze them, Tseng’s team needed to be able to separate the cells from the chip without damaging them.""

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