September 24, 2009
Shedding Light On Cancer Cells
Scientists label cells with colored or glowing chemicals to observe how basic cellular activities differ between healthy and cancerous cells. Existing techniques for labeling cells are either too slow or too toxic to perform on live cells. Now, a study reviewed by Philip Dawson, a member of Faculty of 1000 Biology and leading authority in chemistry and cell biology, describes a novel labeling technique that uses a chemical reaction to make live cancer cells light up quickly and safely.
Researchers at Massachusetts General Hospital developed a two-step process to specifically tag cancer cells. First, chemically modified antibodies home in on cancer cells. Then a chemical reaction called cycloaddition transfers a dye onto the antibody making the cancer cells glow when viewed through a microscope.
Dawson concludes that cycloaddition will allow scientists to observe live cancer cells in the body, leading to a better understanding of cancer's basic processes.
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