Hyperpolarized magnetic resonance spectroscopy (HP-MRS) allows non-invasive real-time monitoring of cancer metabolism. This unique ability allows investigation of changes in cancer metabolism after therapy. This study demonstrates the utility of this modality to detect lowered conversion of hyperpolarized pyruvate to lactate after targeted therapy against a commonly mutated growth signaling pathway in cancer. We also demonstrate changes in enzyme phosphorylation that may explain changes in HP-MRS.
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