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Why cancer cells waste so much energy January 17, 2021MIT In the 1920s, German chemist Otto Warburg discovered that cancer cells don’t metabolize sugar the same way that healthy cells usually do. Since then, scientists have tried to figure out why cancer cells use this alternative pathway, which is much less efficient. MIT biologists have now found a possible answer to this longstanding question. In a study appearing in Molecular Cell, they showed that this metabolic pathway, known as fermentation, helps cells to regenerate large quantities of a molecule called NAD+, which they need to synthesize DNA and other important molecules. Their findings also account for why other types of rapidly proliferating cells, such as immune cells, switch over to fermentation. ....
Credits: Courtesy of the researchers Terms of Use: Images for download on the MIT News office website are made available to non-commercial entities, press and the general public under a Creative Commons Attribution Non-Commercial No Derivatives license. You may not alter the images provided, other than to crop them to size. A credit line must be used when reproducing images; if one is not provided below, credit the images to MIT. Caption: MIT biologists have found a possible explanation for the Warburg effect, first seen in cancer cells in the 1920s and named after Otto Warburg, pictured. Credits: Image: Digital collage by Jose-Luis Olivares; cancer image courtesy of Dr. Cecil Fox, NCI; Warburg photo courtesy of NIH ....