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Stable isotope tracing to assess tumor metabolism in vivo

Nat Protoc. 2021-09; 
Brandon Faubert, Alpaslan Tasdogan, Sean J Morrison, Thomas P Mathews, Ralph J DeBerardinis
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摘要

Cancer cells undergo diverse metabolic adaptations to meet the energetic demands imposed by dysregulated growth and proliferation. Assessing metabolism in intact tumors allows the investigator to observe the combined metabolic effects of numerous cancer cell-intrinsic and -extrinsic factors that cannot be fully captured in culture models. We have developed methods to use stable isotope-labeled nutrients (e.g., [C]glucose) to probe metabolic activity within intact tumors in vivo, in mice and humans. In these methods, the labeled nutrient is introduced to the circulation through an intravenous catheter prior to surgical resection of the tumor and adjacent nonmalignant tissue. Metabolism within these tissues durin... More

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