Biosensor to detect prostate cancer cells
2007-11-05
A carbon nanotube electronic sensor was developed to detect prostate cancer cells based on the unique properties of carbon nanotubes, such as nanometer diameter, high aspect ratio, high electrical conductivity and the fact that they are chemically inert. It is clear that detecting cancer at the earliest stage provides the greatest chance of survival. Currently, detection techniques are improving. More patients are being diagnosed with localized prostate cancer and fewer patients are being diagnosed with disseminated disease. The sensor might also be used in the bloodstream to detect the concentration of cancer cells and hence infer the metastatic potential of the cancer. Initial testing showed that a carbon nanotube array electrode could quickly detect prostate cancer cells in solution. This nanotube electrode could be used to form the needle sensor.
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