The "Warburg effect," an elevation in aerobic glycolysis, may be a fundamental property of cancer cells. For cancer diagnosis and treatment, it would be valuable if elevated glycolytic metabolism could be quantified in an image in animals and humans. The pyruvate molecule is at the metabolic crossroad for energy delivery inside the cell, and with a noninvasive measurement of the relative transformation of pyruvate into lactate and alanine within a biologically relevant time frame (seconds), it may be possible to quantify the glycolytic status of the cells. We have examined the metabolism after i.v. injection of hyperpolarized (13)C-pyruvate in rats with implanted P22 tumors. The strongly enhanced nuclear magnetic resonance signal generated by the hyperpolarization techniques allows mapping of pyruvate, lactate, and alanine in a 5 x 5 x 10 mm(3) imaging voxel using a 1.5 T magnetic resonance scanner. The magnetic resonance scanning (chemical shift imaging) was initiated 24 seconds after the pyruvate injection and had a duration of 14 seconds. All implanted tumors showed significantly higher lactate content than the normal tissue. The results indicate that noninvasive quantification of localized Warburg effect may be possible.
Hyperpolarized choline as an MR imaging molecular probe: feasibility of in vivo imaging in a rat model
From The DNP-NMR Blog:
Hyperpolarized choline as an MR imaging molecular probe: feasibility of in vivo imaging in a rat model
Friesen-Waldner, L.J., et al., Hyperpolarized choline as an MR imaging molecular probe: feasibility of in vivo imaging in a rat model. J Magn Reson Imaging, 2015. 41(4): p. 917-23.
http://www.ncbi.nlm.nih.gov/pubmed/24862837
Hyperpolarization without persistent radicals for in vivo real-time metabolic imaging
From The DNP-NMR Blog:
Hyperpolarization without persistent radicals for in vivo real-time metabolic imaging
Eichhorn, T.R., et al., Hyperpolarization without persistent radicals for in vivo real-time metabolic imaging. Proc. Nat. Aca. Sci. USA, 2013. 110(45): p. 18064-18069.
http://www.pnas.org/content/110/45/18064.abstract
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07-28-2014 08:52 PM
Hyperpolarized 13C dehydroascorbate as an endogenous redox sensor for in vivo metabolic imaging
From The DNP-NMR Blog:
Hyperpolarized 13C dehydroascorbate as an endogenous redox sensor for in vivo metabolic imaging
Keshari, K.R., et al., Hyperpolarized 13C dehydroascorbate as an endogenous redox sensor for in vivo metabolic imaging. Proc. Nat. Aca. Sci. USA, 2011. 108(46): p. 18606-18611.
http://www.pnas.org/content/108/46/18606.abstract
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07-23-2014 11:25 PM
In vivo single-shot C spectroscopic imaging of hyperpolarized metabolites by spatiotemporal encoding
From The DNP-NMR Blog:
In vivo single-shot C spectroscopic imaging of hyperpolarized metabolites by spatiotemporal encoding
Schmidt, R., et al., In vivo single-shot C spectroscopic imaging of hyperpolarized metabolites by spatiotemporal encoding. J Magn Reson, 2014. 240C(0): p. 8-15.
http://www.ncbi.nlm.nih.gov/pubmed/24486720
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02-19-2014 03:12 PM
In vivo magnetic resonance imaging of hyperpolarized silicon particles
From The DNP-NMR Blog:
In vivo magnetic resonance imaging of hyperpolarized silicon particles
Cassidy, M.C., et al., In vivo magnetic resonance imaging of hyperpolarized silicon particles. Nat Nano, 2013. 8(5): p. 363-368.
http://dx.doi.org/10.1038/nnano.2013.65
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08-29-2013 01:27 AM
Strategies for rapid in vivo 1H and hyperpolarized 13C MR spectroscopic imaging
From the The DNP-NMR Blog:
Strategies for rapid in vivo 1H and hyperpolarized 13C MR spectroscopic imaging
Nelson, S.J., et al., Strategies for rapid in vivo 1H and hyperpolarized 13C MR spectroscopic imaging. J. Magn. Reson., 2013. 229(0): p. 187-197.
http://dx.doi.org/10.1016/j.jmr.2013.02.003
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04-15-2013 08:52 AM
Metabolic response of glioma to dichloroacetate measured in vivo by hyperpolarized 13C magnetic resonance spectroscopic imaging
From the The DNP-NMR Blog:
Metabolic response of glioma to dichloroacetate measured in vivo by hyperpolarized 13C magnetic resonance spectroscopic imaging
Park, J.M., et al., Metabolic response of glioma to dichloroacetate measured in vivo by hyperpolarized 13C magnetic resonance spectroscopic imaging. Neuro-Oncology, 2013. 15(4): p. 433-41.
http://neuro-oncology.oxfordjournals.org/content/early/2013/01/16/neuonc.nos319.abstract
Metabolic Imaging by Hyperpolarized 13C Magnetic Resonance Imaging for In vivo Tumor Diagnosis
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