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New imaging technique can identify breast cancer subtypes, early treatment response

"The process of targeted drug development requires assays that measure drug target engagement and predict the response (or lack thereof) to treatment," said Alex Walsh, a graduate student in the Department of Biomedical Engineering at Vanderbilt University in Nashville, Tenn. "We have shown that optical metabolic imaging (OMI) enables fast, sensitive, and accurate measurement of drug action. Importantly, OMI measurements can be made repeatedly over time in a live animal, which significantly reduces the cost of these preclinical studies." Human cells undergo extensive chemical reactions called metabolic activity to produce energy, and this activity is altered in cancer cells. When cancer cells are treated with anticancer drugs, their metabolic activity changes. …