Here we use nanobuttons that have the potential to target cancer cells before they reach the metastasis phase. As we known, most metastatic cancer occur in the lung,ovaries. We can bind nanobuttons with toxins inside to cancer cells after they bind to a particular site in the lungs or ovaries. When there is a mutation or factor associated with the cancer that results in the cancer-specific secretion of a protein, that protein can recognize and bind a nanobutton and "press" the nanobutton to cause the release of toxin. This technique might be useful in preventing cancerous cells from reaching the metastasic phase. We don't have any idea if this technque is useful or not, but at least we are going for a new approach.
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