Probing treatment response of glutaminolytic prostate cancer cells to natural drugs with hyperpolarized [5‐13C]glutamine. Issue 6 (9th July 2014)

• Record Type: Journal Article
• Authors: Canapè, Carolina; Catanzaro, Giuseppina; Terreno, Enzo; Karlsson, Magnus; Lerche, Mathilde Hauge; Jensen, Pernille Rose
• Is Part Of: Magnetic resonance in medicine. Volume 73:Issue 6(2015:Jun.)
• Page Start: 2296
• Page End: 2305
• Publication Date: 2014-07-09
• Subjects: Nuclear magnetic resonance -- Periodicals; Electron paramagnetic resonance -- Periodicals; 616.07548
• DOI: 10.1002/mrm.25360
• Languages: English
• ISSNs: 0740-3194

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="mrm25360-sec-0001" sec-type="section"> <title>Purpose</title> <p>The correlation between glutamine metabolism and oncogene expression in cancers has led to a renewed interest in the role of glutamine in cancer cell survival. Hyperpolarized [5‐<sup>13</sup>C]glutamine is evaluated as a potential biomarker for noninvasive metabolic measurements of drug response in prostate cancer cells.</p> </sec> <sec id="mrm25360-sec-0002" sec-type="section"> <title>Methods</title> <p>Hyperpolarized [5‐<sup>13</sup>C]glutamine is used to measure glutamine metabolism in two prostate cancer cell lines (PC3 and DU145) before and after treatment with the two natural anticancer drugs resveratrol and sulforaphane. An invasive biochemical assay simulating the hyperpolarized experiment is used to independently quantify glutamine metabolism.</p> </sec> <sec id="mrm25360-sec-0003" sec-type="section"> <title>Results</title> <p>Glutamine metabolism is found to be 4 times higher in the more glutaminolytic DU145 cells compared with PC3 cells under proliferating growth conditions by using hyperpolarized [5‐<sup>13</sup>C]glutamine as a noninvasive probe. A significant decrease in glutamine metabolism occurs upon apoptotic response to treatment with resveratrol and sulforaphane.</p> </sec> <sec id="mrm25360-sec-0004" sec-type="section"> <title>Conclusion</title> <p>Hyperpolarized NMR using [5‐<sup>13</sup>C]glutamine as a probe permits the noninvasive observation of glutaminolysis in different cell lines and under different treatment conditions. Hyperpolarized [5‐<sup>13</sup>C]glutamine metabolism thus is a promising biomarker for the noninvasive detection of tumor response to treatment, as it directly monitors one of the hallmarks in cancer metabolism ‐ glutaminolysis ‐ in living cells. Magn Reson Med, 2014. © 2014 Wiley Periodicals, Inc. Magn Reson Med 73:2296–2305, 2015. © 2014 Wiley Periodicals, Inc.</p> </sec> </abstract>