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Deen SS, Rooney C, Shinozaki A, McGing J, Grist JT, Tyler DJ, Serrão E, Gallagher FA. Hyperpolarized Carbon 13 MRI: Clinical Applications and Future Directions in Oncology. Radiol Imaging Cancer 2023; 5:e230005. [PMID: 37682052 PMCID: PMC10546364 DOI: 10.1148/rycan.230005] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 06/16/2023] [Accepted: 08/02/2023] [Indexed: 09/09/2023]
Abstract
Hyperpolarized carbon 13 MRI (13C MRI) is a novel imaging approach that can noninvasively probe tissue metabolism in both normal and pathologic tissues. The process of hyperpolarization increases the signal acquired by several orders of magnitude, allowing injected 13C-labeled molecules and their downstream metabolites to be imaged in vivo, thus providing real-time information on kinetics. To date, the most important reaction studied with hyperpolarized 13C MRI is exchange of the hyperpolarized 13C signal from injected [1-13C]pyruvate with the resident tissue lactate pool. Recent preclinical and human studies have shown the role of several biologic factors such as the lactate dehydrogenase enzyme, pyruvate transporter expression, and tissue hypoxia in generating the MRI signal from this reaction. Potential clinical applications of hyperpolarized 13C MRI in oncology include using metabolism to stratify tumors by grade, selecting therapeutic pathways based on tumor metabolic profiles, and detecting early treatment response through the imaging of shifts in metabolism that precede tumor structural changes. This review summarizes the foundations of hyperpolarized 13C MRI, presents key findings from human cancer studies, and explores the future clinical directions of the technique in oncology. Keywords: Hyperpolarized Carbon 13 MRI, Molecular Imaging, Cancer, Tissue Metabolism © RSNA, 2023.
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Affiliation(s)
- Surrin S Deen
- From the Department of Radiology, Cambridge University Hospitals, Biomedical Campus, Cambridge, CB2 0QQ, England (S.S.D., E.S., F.A.G.); Department of Physiology, Anatomy, and Genetics (C.R., A.S., J.T.G., D.J.T.) and the Oxford Centre for Clinical Magnetic Resonance Research (A.S., J.T.G., D.J.T.), University of Oxford, Oxford, England; Department of Radiology, Oxford University Hospitals, Oxford, England (J.M., J.T.G.); Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, England (J.T.G.); Department of Radiology, University of Cambridge, Cambridge, England (E.S., F.A.G.); Cancer Research UK Cambridge Centre, Cambridge, England (F.A.G.); and Joint Department of Medical Imaging, University Health Network, University of Toronto, Toronto, Canada (E.S.)
| | - Catriona Rooney
- From the Department of Radiology, Cambridge University Hospitals, Biomedical Campus, Cambridge, CB2 0QQ, England (S.S.D., E.S., F.A.G.); Department of Physiology, Anatomy, and Genetics (C.R., A.S., J.T.G., D.J.T.) and the Oxford Centre for Clinical Magnetic Resonance Research (A.S., J.T.G., D.J.T.), University of Oxford, Oxford, England; Department of Radiology, Oxford University Hospitals, Oxford, England (J.M., J.T.G.); Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, England (J.T.G.); Department of Radiology, University of Cambridge, Cambridge, England (E.S., F.A.G.); Cancer Research UK Cambridge Centre, Cambridge, England (F.A.G.); and Joint Department of Medical Imaging, University Health Network, University of Toronto, Toronto, Canada (E.S.)
| | - Ayaka Shinozaki
- From the Department of Radiology, Cambridge University Hospitals, Biomedical Campus, Cambridge, CB2 0QQ, England (S.S.D., E.S., F.A.G.); Department of Physiology, Anatomy, and Genetics (C.R., A.S., J.T.G., D.J.T.) and the Oxford Centre for Clinical Magnetic Resonance Research (A.S., J.T.G., D.J.T.), University of Oxford, Oxford, England; Department of Radiology, Oxford University Hospitals, Oxford, England (J.M., J.T.G.); Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, England (J.T.G.); Department of Radiology, University of Cambridge, Cambridge, England (E.S., F.A.G.); Cancer Research UK Cambridge Centre, Cambridge, England (F.A.G.); and Joint Department of Medical Imaging, University Health Network, University of Toronto, Toronto, Canada (E.S.)
| | - Jordan McGing
- From the Department of Radiology, Cambridge University Hospitals, Biomedical Campus, Cambridge, CB2 0QQ, England (S.S.D., E.S., F.A.G.); Department of Physiology, Anatomy, and Genetics (C.R., A.S., J.T.G., D.J.T.) and the Oxford Centre for Clinical Magnetic Resonance Research (A.S., J.T.G., D.J.T.), University of Oxford, Oxford, England; Department of Radiology, Oxford University Hospitals, Oxford, England (J.M., J.T.G.); Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, England (J.T.G.); Department of Radiology, University of Cambridge, Cambridge, England (E.S., F.A.G.); Cancer Research UK Cambridge Centre, Cambridge, England (F.A.G.); and Joint Department of Medical Imaging, University Health Network, University of Toronto, Toronto, Canada (E.S.)
| | - James T Grist
- From the Department of Radiology, Cambridge University Hospitals, Biomedical Campus, Cambridge, CB2 0QQ, England (S.S.D., E.S., F.A.G.); Department of Physiology, Anatomy, and Genetics (C.R., A.S., J.T.G., D.J.T.) and the Oxford Centre for Clinical Magnetic Resonance Research (A.S., J.T.G., D.J.T.), University of Oxford, Oxford, England; Department of Radiology, Oxford University Hospitals, Oxford, England (J.M., J.T.G.); Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, England (J.T.G.); Department of Radiology, University of Cambridge, Cambridge, England (E.S., F.A.G.); Cancer Research UK Cambridge Centre, Cambridge, England (F.A.G.); and Joint Department of Medical Imaging, University Health Network, University of Toronto, Toronto, Canada (E.S.)
| | - Damian J Tyler
- From the Department of Radiology, Cambridge University Hospitals, Biomedical Campus, Cambridge, CB2 0QQ, England (S.S.D., E.S., F.A.G.); Department of Physiology, Anatomy, and Genetics (C.R., A.S., J.T.G., D.J.T.) and the Oxford Centre for Clinical Magnetic Resonance Research (A.S., J.T.G., D.J.T.), University of Oxford, Oxford, England; Department of Radiology, Oxford University Hospitals, Oxford, England (J.M., J.T.G.); Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, England (J.T.G.); Department of Radiology, University of Cambridge, Cambridge, England (E.S., F.A.G.); Cancer Research UK Cambridge Centre, Cambridge, England (F.A.G.); and Joint Department of Medical Imaging, University Health Network, University of Toronto, Toronto, Canada (E.S.)
| | - Eva Serrão
- From the Department of Radiology, Cambridge University Hospitals, Biomedical Campus, Cambridge, CB2 0QQ, England (S.S.D., E.S., F.A.G.); Department of Physiology, Anatomy, and Genetics (C.R., A.S., J.T.G., D.J.T.) and the Oxford Centre for Clinical Magnetic Resonance Research (A.S., J.T.G., D.J.T.), University of Oxford, Oxford, England; Department of Radiology, Oxford University Hospitals, Oxford, England (J.M., J.T.G.); Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, England (J.T.G.); Department of Radiology, University of Cambridge, Cambridge, England (E.S., F.A.G.); Cancer Research UK Cambridge Centre, Cambridge, England (F.A.G.); and Joint Department of Medical Imaging, University Health Network, University of Toronto, Toronto, Canada (E.S.)
| | - Ferdia A Gallagher
- From the Department of Radiology, Cambridge University Hospitals, Biomedical Campus, Cambridge, CB2 0QQ, England (S.S.D., E.S., F.A.G.); Department of Physiology, Anatomy, and Genetics (C.R., A.S., J.T.G., D.J.T.) and the Oxford Centre for Clinical Magnetic Resonance Research (A.S., J.T.G., D.J.T.), University of Oxford, Oxford, England; Department of Radiology, Oxford University Hospitals, Oxford, England (J.M., J.T.G.); Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, England (J.T.G.); Department of Radiology, University of Cambridge, Cambridge, England (E.S., F.A.G.); Cancer Research UK Cambridge Centre, Cambridge, England (F.A.G.); and Joint Department of Medical Imaging, University Health Network, University of Toronto, Toronto, Canada (E.S.)
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Ahamed F, Van Criekinge M, Wang ZJ, Kurhanewicz J, Larson P, Sriram R. Modeling hyperpolarized lactate signal dynamics in cells, patient-derived tissue slice cultures and murine models. NMR IN BIOMEDICINE 2021; 34:e4467. [PMID: 33415771 PMCID: PMC8423093 DOI: 10.1002/nbm.4467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 12/10/2020] [Indexed: 05/31/2023]
Abstract
Determining the aggressiveness of renal cell carcinoma (RCC) noninvasively is a critical part of the diagnostic workup for treating this disease that kills more than 15,000 people annually in the USA. Recently, we have shown that not only the amount of lactate produced, as a consequence of the Warburg effect, but also its efflux out of the cell, is a critical marker of RCC aggressiveness and differentiating RCCs from benign renal tumors. Enzymatic conversions can now be measured in situ with hyperpolarized (HP) 13 C magnetic resonance (MR) on a sub-minute time scale. Using RCC models, we have shown that this technology can interrogate in real time both lactate production and compartmentalization, which are associated with tumor aggressiveness. The dynamic HP MR data have enabled us to robustly characterize parameters that have been elusive to measure directly in intact living cells and murine tumors thus far. Specifically, we were able to measure the same intracellular lactate longitudinal relaxation time in three RCC cell lines of 16.42 s, and lactate efflux rate ranging from 0.14 to 0.8 s-1 in the least to the most aggressive RCC cell lines and correlate it to monocarboxylate transporter isoform 4 expression. We also analyzed dynamic HP lactate and pyruvate data from orthotopic murine RCC tumors using a simplified one-compartment model, and showed comparable apparent pyruvate to lactate conversion rate (kPL ) values with those measured in vitro. This kinetic modeling was then extended to characterize the lactate dynamics in patient-derived living RCC tissue slices; and even without direct measurement of the extracellular lactate signal the efflux parameter was still assessed and was distinct between the benign renal tumors and RCCs. Across all these preclinical models, the rate parameters of kPL and lactate efflux correlated to cancer aggressiveness, demonstrating the validity of our modeling approach for noninvasive assessment of RCC aggressiveness.
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Affiliation(s)
- Fayyaz Ahamed
- University of California, Berkeley, Berkeley, California, USA
| | - Mark Van Criekinge
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Zhen J. Wang
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - John Kurhanewicz
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Peder Larson
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Renuka Sriram
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
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Topping GJ, Hundshammer C, Nagel L, Grashei M, Aigner M, Skinner JG, Schulte RF, Schilling F. Acquisition strategies for spatially resolved magnetic resonance detection of hyperpolarized nuclei. MAGMA (NEW YORK, N.Y.) 2020; 33:221-256. [PMID: 31811491 PMCID: PMC7109201 DOI: 10.1007/s10334-019-00807-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 10/08/2019] [Accepted: 11/21/2019] [Indexed: 12/13/2022]
Abstract
Hyperpolarization is an emerging method in magnetic resonance imaging that allows nuclear spin polarization of gases or liquids to be temporarily enhanced by up to five or six orders of magnitude at clinically relevant field strengths and administered at high concentration to a subject at the time of measurement. This transient gain in signal has enabled the non-invasive detection and imaging of gas ventilation and diffusion in the lungs, perfusion in blood vessels and tissues, and metabolic conversion in cells, animals, and patients. The rapid development of this method is based on advances in polarizer technology, the availability of suitable probe isotopes and molecules, improved MRI hardware and pulse sequence development. Acquisition strategies for hyperpolarized nuclei are not yet standardized and are set up individually at most sites depending on the specific requirements of the probe, the object of interest, and the MRI hardware. This review provides a detailed introduction to spatially resolved detection of hyperpolarized nuclei and summarizes novel and previously established acquisition strategies for different key areas of application.
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Affiliation(s)
- Geoffrey J Topping
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Christian Hundshammer
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Luca Nagel
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Martin Grashei
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Maximilian Aigner
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Jason G Skinner
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | | | - Franz Schilling
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
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4
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Skinner JG, Menichetti L, Flori A, Dost A, Schmidt AB, Plaumann M, Gallagher FA, Hövener JB. Metabolic and Molecular Imaging with Hyperpolarised Tracers. Mol Imaging Biol 2018; 20:902-918. [PMID: 30120644 DOI: 10.1007/s11307-018-1265-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Since reaching the clinic, magnetic resonance imaging (MRI) has become an irreplaceable radiological tool because of the macroscopic information it provides across almost all organs and soft tissues within the human body, all without the need for ionising radiation. The sensitivity of MR, however, is too low to take full advantage of the rich chemical information contained in the MR signal. Hyperpolarisation techniques have recently emerged as methods to overcome the sensitivity limitations by enhancing the MR signal by many orders of magnitude compared to the thermal equilibrium, enabling a new class of metabolic and molecular X-nuclei based MR tracers capable of reporting on metabolic processes at the cellular level. These hyperpolarised (HP) tracers have the potential to elucidate the complex metabolic processes of many organs and pathologies, with studies so far focusing on the fields of oncology and cardiology. This review presents an overview of hyperpolarisation techniques that appear most promising for clinical use today, such as dissolution dynamic nuclear polarisation (d-DNP), parahydrogen-induced hyperpolarisation (PHIP), Brute force hyperpolarisation and spin-exchange optical pumping (SEOP), before discussing methods for tracer detection, emerging metabolic tracers and applications and progress in preclinical and clinical application.
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Affiliation(s)
- Jason Graham Skinner
- Department of Radiology, Medical Physics, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
| | - Luca Menichetti
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
- Fondazione CNR/Regione Toscana G. Monasterio, Pisa, Italy
| | - Alessandra Flori
- Fondazione CNR/Regione Toscana G. Monasterio, Pisa, Italy
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Anna Dost
- Department of Radiology, Medical Physics, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Andreas Benjamin Schmidt
- Department of Radiology, Medical Physics, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Section Biomedical Imaging and MOIN CC, University Medical Center Schleswig Holstein, Kiel University, Kiel, Germany
| | - Markus Plaumann
- Institute of Biometrics and Medical Informatics, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | | | - Jan-Bernd Hövener
- Section Biomedical Imaging and MOIN CC, University Medical Center Schleswig Holstein, Kiel University, Kiel, Germany.
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5
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Larson PEZ, Chen HY, Gordon JW, Korn N, Maidens J, Arcak M, Tang S, Criekinge M, Carvajal L, Mammoli D, Bok R, Aggarwal R, Ferrone M, Slater JB, Nelson SJ, Kurhanewicz J, Vigneron DB. Investigation of analysis methods for hyperpolarized 13C-pyruvate metabolic MRI in prostate cancer patients. NMR IN BIOMEDICINE 2018. [PMID: 30230646 DOI: 10.1002/nbm.3997e3997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
MRI using hyperpolarized (HP) carbon-13 pyruvate is being investigated in clinical trials to provide non-invasive measurements of metabolism for cancer and cardiac imaging. In this project, we applied HP [1-13 C]pyruvate dynamic MRI in prostate cancer to measure the conversion from pyruvate to lactate, which is expected to increase in aggressive cancers. The goal of this work was to develop and test analysis methods for improved quantification of this metabolic conversion. In this work, we compared specialized kinetic modeling methods to estimate the pyruvate-to-lactate conversion rate, kPL , as well as the lactate-to-pyruvate area-under-curve (AUC) ratio. The kinetic modeling included an "inputless" method requiring no assumptions regarding the input function, as well as a method incorporating bolus characteristics in the fitting. These were first evaluated with simulated data designed to match human prostate data, where we examined the expected sensitivity of metabolism quantification to variations in kPL , signal-to-noise ratio (SNR), bolus characteristics, relaxation rates, and B1 variability. They were then applied to 17 prostate cancer patient datasets. The simulations indicated that the inputless method with fixed relaxation rates provided high expected accuracy with no sensitivity to bolus characteristics. The AUC ratio showed an undesired strong sensitivity to bolus variations. Fitting the input function as well did not improve accuracy over the inputless method. In vivo results showed qualitatively accurate kPL maps with inputless fitting. The AUC ratio was sensitive to bolus delivery variations. Fitting with the input function showed high variability in parameter maps. Overall, we found the inputless kPL fitting method to be a simple, robust approach for quantification of metabolic conversion following HP [1-13 C]pyruvate injection in human prostate cancer studies. This study also provided initial ranges of HP [1-13 C]pyruvate parameters (SNR, kPL , bolus characteristics) in the human prostate.
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Affiliation(s)
- Peder E Z Larson
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - Hsin-Yu Chen
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - Jeremy W Gordon
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
| | - Natalie Korn
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - John Maidens
- Department of Electrical Engineering and Computer Sciences, University of California - Berkeley, Berkeley, California
| | - Murat Arcak
- Department of Electrical Engineering and Computer Sciences, University of California - Berkeley, Berkeley, California
| | - Shuyu Tang
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - Mark Criekinge
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
| | - Lucas Carvajal
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
| | - Daniele Mammoli
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
| | - Robert Bok
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
| | - Rahul Aggarwal
- Department of Medicine, University of California - San Francisco, San Francisco, California
| | - Marcus Ferrone
- Department of Clinical Pharmacy, University of California - San Francisco, San Francisco, California
| | - James B Slater
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
| | - Sarah J Nelson
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - Daniel B Vigneron
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
- UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
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Larson PEZ, Chen HY, Gordon JW, Korn N, Maidens J, Arcak M, Tang S, Criekinge M, Carvajal L, Mammoli D, Bok R, Aggarwal R, Ferrone M, Slater JB, Nelson SJ, Kurhanewicz J, Vigneron DB. Investigation of analysis methods for hyperpolarized 13C-pyruvate metabolic MRI in prostate cancer patients. NMR IN BIOMEDICINE 2018; 31:e3997. [PMID: 30230646 PMCID: PMC6392436 DOI: 10.1002/nbm.3997] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/14/2018] [Accepted: 06/28/2018] [Indexed: 05/08/2023]
Abstract
MRI using hyperpolarized (HP) carbon-13 pyruvate is being investigated in clinical trials to provide non-invasive measurements of metabolism for cancer and cardiac imaging. In this project, we applied HP [1-13 C]pyruvate dynamic MRI in prostate cancer to measure the conversion from pyruvate to lactate, which is expected to increase in aggressive cancers. The goal of this work was to develop and test analysis methods for improved quantification of this metabolic conversion. In this work, we compared specialized kinetic modeling methods to estimate the pyruvate-to-lactate conversion rate, kPL , as well as the lactate-to-pyruvate area-under-curve (AUC) ratio. The kinetic modeling included an "inputless" method requiring no assumptions regarding the input function, as well as a method incorporating bolus characteristics in the fitting. These were first evaluated with simulated data designed to match human prostate data, where we examined the expected sensitivity of metabolism quantification to variations in kPL , signal-to-noise ratio (SNR), bolus characteristics, relaxation rates, and B1 variability. They were then applied to 17 prostate cancer patient datasets. The simulations indicated that the inputless method with fixed relaxation rates provided high expected accuracy with no sensitivity to bolus characteristics. The AUC ratio showed an undesired strong sensitivity to bolus variations. Fitting the input function as well did not improve accuracy over the inputless method. In vivo results showed qualitatively accurate kPL maps with inputless fitting. The AUC ratio was sensitive to bolus delivery variations. Fitting with the input function showed high variability in parameter maps. Overall, we found the inputless kPL fitting method to be a simple, robust approach for quantification of metabolic conversion following HP [1-13 C]pyruvate injection in human prostate cancer studies. This study also provided initial ranges of HP [1-13 C]pyruvate parameters (SNR, kPL , bolus characteristics) in the human prostate.
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Affiliation(s)
- Peder E. Z. Larson
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
- UC Berkeley–UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - Hsin-Yu Chen
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
- UC Berkeley–UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - Jeremy W. Gordon
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
| | - Natalie Korn
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
- UC Berkeley–UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - John Maidens
- Department of Electrical Engineering and Computer Sciences, University of California – Berkeley, Berkeley, California
| | - Murat Arcak
- Department of Electrical Engineering and Computer Sciences, University of California – Berkeley, Berkeley, California
| | - Shuyu Tang
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
- UC Berkeley–UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - Mark Criekinge
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
| | - Lucas Carvajal
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
| | - Daniele Mammoli
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
| | - Robert Bok
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
| | - Rahul Aggarwal
- Department of Medicine, University of California – San Francisco, San Francisco, California
| | - Marcus Ferrone
- Department of Clinical Pharmacy, University of California – San Francisco, San Francisco, California
| | - James B. Slater
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
| | - Sarah J. Nelson
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
- UC Berkeley–UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
- UC Berkeley–UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
| | - Daniel B. Vigneron
- Department of Radiology and Biomedical Imaging, University of California – San Francisco, San Francisco, California
- UC Berkeley–UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, California
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Placental physiology monitored by hyperpolarized dynamic 13C magnetic resonance. Proc Natl Acad Sci U S A 2018; 115:E2429-E2436. [PMID: 29444856 DOI: 10.1073/pnas.1715175115] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Placental functions, including transport and metabolism, play essential roles in pregnancy. This study assesses such processes in vivo, from a hyperpolarized MRI perspective. Hyperpolarized urea, bicarbonate, and pyruvate were administered to near-term pregnant rats, and all metabolites displayed distinctive behaviors. Little evidence of placental barrier crossing was observed for bicarbonate, at least within the timescales allowed by 13C relaxation. By contrast, urea was observed to cross the placental barrier, with signatures visible from certain fetal organs including the liver. This was further evidenced by the slower decay times observed for urea in placentas vis-à-vis other maternal compartments and validated by mass spectrometric analyses. A clear placental localization, as well as concurrent generation of hyperpolarized lactate, could also be detected for [1-13C]pyruvate. These metabolites also exhibited longer lifetimes in the placentas than in maternal arteries, consistent with a metabolic activity occurring past the trophoblastic interface. When extended to a model involving the administration of a preeclampsia-causing chemical, hyperpolarized MR revealed changes in urea's transport, as well as decreases in placental glycolysis vs. the naïve animals. These distinct behaviors highlight the potential of hyperpolarized MR for the early, minimally invasive detection of aberrant placental metabolism.
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Milshteyn E, von Morze C, Reed GD, Shang H, Shin PJ, Zhu Z, Chen HY, Bok R, Goga A, Kurhanewicz J, Larson PEZ, Vigneron DB. Development of high resolution 3D hyperpolarized carbon-13 MR molecular imaging techniques. Magn Reson Imaging 2017; 38:152-162. [PMID: 28077268 PMCID: PMC5360530 DOI: 10.1016/j.mri.2017.01.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 01/05/2017] [Accepted: 01/06/2017] [Indexed: 01/08/2023]
Abstract
The goal of this project was to develop and apply techniques for T2 mapping and 3D high resolution (1.5mm isotropic; 0.003cm3) 13C imaging of hyperpolarized (HP) probes [1-13C]lactate, [1-13C]pyruvate, [2-13C]pyruvate, and [13C,15N2]urea in vivo. A specialized 2D bSSFP sequence was implemented on a clinical 3T scanner and used to obtain the first high resolution T2 maps of these different hyperpolarized compounds in both rats and tumor-bearing mice. These maps were first used to optimize timings for highest SNR for single time-point 3D bSSFP acquisitions with a 1.5mm isotropic spatial resolution of normal rats. This 3D acquisition approach was extended to serial dynamic imaging with 2-fold compressed sensing acceleration without changing spatial resolution. The T2 mapping experiments yielded measurements of T2 values of >1s for all compounds within rat kidneys/vasculature and TRAMP tumors, except for [2-13C]pyruvate which was ~730ms and ~320ms, respectively. The high resolution 3D imaging enabled visualization the biodistribution of [1-13C]lactate, [1-13C]pyruvate, and [2-13C]pyruvate within different kidney compartments as well as in the vasculature. While the mouse anatomy is smaller, the resolution was also sufficient to image the distribution of all compounds within kidney, vasculature, and tumor. The development of the specialized 3D sequence with compressed sensing provided improved structural and functional assessments at a high (0.003cm3) spatial and 2s temporal resolution in vivo utilizing HP 13C substrates by exploiting their long T2 values. This 1.5mm isotropic resolution is comparable to 1H imaging and application of this approach could be extended to future studies of uptake, metabolism, and perfusion in cancer and other disease models and may ultimately be of value for clinical imaging.
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Affiliation(s)
- Eugene Milshteyn
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA
| | - Cornelius von Morze
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | | | - Hong Shang
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA
| | - Peter J Shin
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Zihan Zhu
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA
| | - Hsin-Yu Chen
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA
| | - Robert Bok
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Andrei Goga
- Department of Cell and Tissue Biology, University of California, San Francisco, CA, USA
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA
| | - Peder E Z Larson
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA
| | - Daniel B Vigneron
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA.
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9
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Chen HY, Larson PEZ, Bok RA, von Morze C, Sriram R, Delos Santos R, Delos Santos J, Gordon JW, Bahrami N, Ferrone M, Kurhanewicz J, Vigneron DB. Assessing Prostate Cancer Aggressiveness with Hyperpolarized Dual-Agent 3D Dynamic Imaging of Metabolism and Perfusion. Cancer Res 2017; 77:3207-3216. [PMID: 28428273 DOI: 10.1158/0008-5472.can-16-2083] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 12/19/2016] [Accepted: 04/13/2017] [Indexed: 01/15/2023]
Abstract
New magnetic resonance (MR) molecular imaging techniques offer the potential for noninvasive, simultaneous quantification of metabolic and perfusion parameters in tumors. This study applied a three-dimensional dynamic dual-agent hyperpolarized 13C magnetic resonance spectroscopic imaging approach with 13C-pyruvate and 13C-urea to investigate differences in perfusion and metabolism between low- and high-grade tumors in the transgenic adenocarcinoma of mouse prostate (TRAMP) transgenic mouse model of prostate cancer. Dynamic MR data were corrected for T1 relaxation and RF excitation and modeled to provide quantitative measures of pyruvate to lactate flux (kPL ) and urea perfusion (urea AUC) that correlated with TRAMP tumor histologic grade. kPL values were relatively higher for high-grade TRAMP tumors. The increase in kPL flux correlated significantly with higher lactate dehydrogenase activity and mRNA expression of Ldha, Mct1, and Mct4 as well as with more proliferative disease. There was a significant reduction in perfusion in high-grade tumors that associated with increased hypoxia and mRNA expression of Hif1α and Vegf and increased ktrans , attributed to increased blood vessel permeability. In 90% of the high-grade TRAMP tumors, a mismatch in perfusion and metabolism measurements was observed, with low perfusion being associated with increased kPL This perfusion-metabolism mismatch was also associated with metastasis. The molecular imaging approach we developed could be translated to investigate these imaging biomarkers for their diagnostic and prognostic power in future prostate cancer clinical trials. Cancer Res; 77(12); 3207-16. ©2017 AACR.
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Affiliation(s)
- Hsin-Yu Chen
- Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, California.,Graduate Program in Bioengineering, University of California, Berkeley, Berkeley California.,Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Peder E Z Larson
- Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, California.,Graduate Program in Bioengineering, University of California, Berkeley, Berkeley California.,Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Robert A Bok
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Cornelius von Morze
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Renuka Sriram
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Romelyn Delos Santos
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Justin Delos Santos
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Jeremy W Gordon
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Naeim Bahrami
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California.,Masters of Science in Biomedical Imaging Program, University of California, San Francisco, San Francisco, California
| | - Marcus Ferrone
- Department of Clinical Pharmacy, University of California, San Francisco, San Francisco, California
| | - John Kurhanewicz
- Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, California.,Graduate Program in Bioengineering, University of California, Berkeley, Berkeley California.,Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Daniel B Vigneron
- Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, California. .,Graduate Program in Bioengineering, University of California, Berkeley, Berkeley California.,Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
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10
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Lee H, Lee J, Joe E, Yang S, Song JE, Choi YS, Wang E, Joo CG, Song HT, Kim DH. Flow-suppressed hyperpolarized 13 C chemical shift imaging using velocity-optimized bipolar gradient in mouse liver tumors at 9.4 T. Magn Reson Med 2016; 78:1674-1682. [PMID: 28019020 DOI: 10.1002/mrm.26578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 11/21/2016] [Accepted: 11/21/2016] [Indexed: 12/21/2022]
Abstract
PURPOSE To optimize and investigate the influence of bipolar gradients for flow suppression in metabolic quantification of hyperpolarized 13 C chemical shift imaging (CSI) of mouse liver at 9.4 T. METHODS The trade-off between the amount of flow suppression using bipolar gradients and T2* effect from static spins was simulated. A free induction decay CSI sequence with alternations between the flow-suppressed and non-flow-suppressed acquisitions for each repetition time was developed and was applied to liver tumor-bearing mice via injection of hyperpolarized [1-13 C] pyruvate. RESULTS The in vivo results from flow suppression using the velocity-optimized bipolar gradient were comparable with the simulation results. The vascular signal was adequately suppressed and signal loss in stationary tissue was minimized. Application of the velocity-optimized bipolar gradient to tumor-bearing mice showed reduction in the vessel-derived pyruvate signal contamination, and the average lactate/pyruvate ratio increased by 0.095 (P < 0.05) in the tumor region after flow suppression. CONCLUSION Optimization of the bipolar gradient is essential because of the short 13 C T2* and high signal in venous flow in the mouse liver. The proposed velocity-optimized bipolar gradient can suppress the vascular signal, minimizing T2*-related signal loss in stationary tissues at 9.4 T. Magn Reson Med 78:1674-1682, 2017. © 2016 International Society for Magnetic Resonance in Medicine.
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Affiliation(s)
- Hansol Lee
- Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea
| | - Joonsung Lee
- Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, Korea
| | - Eunhae Joe
- Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea
| | - Seungwook Yang
- Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea
| | - Jae Eun Song
- Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea
| | - Young-Suk Choi
- Department of Radiology, College of Medicine, Yonsei University, Seoul, Korea
| | - Eunkyung Wang
- Department of Radiology, College of Medicine, Yonsei University, Seoul, Korea
| | - Chan Gyu Joo
- Severance Biomedical Science Institute, College of Medicine, Yonsei University, Seoul, Korea
| | - Ho-Taek Song
- Department of Radiology, College of Medicine, Yonsei University, Seoul, Korea
| | - Dong-Hyun Kim
- Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea
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11
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Maidens J, Gordon JW, Arcak M, Larson PEZ. Optimizing Flip Angles for Metabolic Rate Estimation in Hyperpolarized Carbon-13 MRI. IEEE TRANSACTIONS ON MEDICAL IMAGING 2016; 35:2403-2412. [PMID: 27249825 PMCID: PMC5134417 DOI: 10.1109/tmi.2016.2574240] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Hyperpolarized carbon-13 magnetic resonance imaging has enabled the real-time observation of perfusion and metabolism in vivo. These experiments typically aim to distinguish between healthy and diseased tissues based on the rate at which they metabolize an injected substrate. However, existing approaches to optimizing flip angle sequences for these experiments have focused on indirect metrics of the reliability of metabolic rate estimates, such as signal variation and signal-to-noise ratio. In this paper we present an optimization procedure that focuses on maximizing the Fisher information about the metabolic rate. We demonstrate through numerical simulation experiments that flip angles optimized based on the Fisher information lead to lower variance in metabolic rate estimates than previous flip angle sequences. In particular, we demonstrate a 20% decrease in metabolic rate uncertainty when compared with the best competing sequence. We then demonstrate appropriateness of the mathematical model used in the simulation experiments with in vivo experiments in a prostate cancer mouse model. While there is no ground truth against which to compare the parameter estimates generated in the in vivo experiments, we demonstrate that our model used can reproduce consistent parameter estimates for a number of flip angle sequences.
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Affiliation(s)
- John Maidens
- Department of Electrical Engineering & Computer Sciences, University of California, Berkeley, CA, 94720, USA
| | - Jeremy W. Gordon
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, 1700 4th Street, San Francisco, CA, 94158, USA
| | - Murat Arcak
- Department of Electrical Engineering & Computer Sciences, University of California, Berkeley, CA, 94720, USA
| | - Peder E. Z. Larson
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, 1700 4th Street, San Francisco, CA, 94158, USA
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12
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Chaumeil MM, Radoul M, Najac C, Eriksson P, Viswanath P, Blough MD, Chesnelong C, Luchman HA, Cairncross JG, Ronen SM. Hyperpolarized (13)C MR imaging detects no lactate production in mutant IDH1 gliomas: Implications for diagnosis and response monitoring. Neuroimage Clin 2016; 12:180-9. [PMID: 27437179 PMCID: PMC4939422 DOI: 10.1016/j.nicl.2016.06.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 06/21/2016] [Accepted: 06/22/2016] [Indexed: 10/26/2022]
Abstract
Metabolic imaging of brain tumors using (13)C Magnetic Resonance Spectroscopy (MRS) of hyperpolarized [1-(13)C] pyruvate is a promising neuroimaging strategy which, after a decade of preclinical success in glioblastoma (GBM) models, is now entering clinical trials in multiple centers. Typically, the presence of GBM has been associated with elevated hyperpolarized [1-(13)C] lactate produced from [1-(13)C] pyruvate, and response to therapy has been associated with a drop in hyperpolarized [1-(13)C] lactate. However, to date, lower grade gliomas had not been investigated using this approach. The most prevalent mutation in lower grade gliomas is the isocitrate dehydrogenase 1 (IDH1) mutation, which, in addition to initiating tumor development, also induces metabolic reprogramming. In particular, mutant IDH1 gliomas are associated with low levels of lactate dehydrogenase A (LDHA) and monocarboxylate transporters 1 and 4 (MCT1, MCT4), three proteins involved in pyruvate metabolism to lactate. We therefore investigated the potential of (13)C MRS of hyperpolarized [1-(13)C] pyruvate for detection of mutant IDH1 gliomas and for monitoring of their therapeutic response. We studied patient-derived mutant IDH1 glioma cells that underexpress LDHA, MCT1 and MCT4, and wild-type IDH1 GBM cells that express high levels of these proteins. Mutant IDH1 cells and tumors produced significantly less hyperpolarized [1-(13)C] lactate compared to GBM, consistent with their metabolic reprogramming. Furthermore, hyperpolarized [1-(13)C] lactate production was not affected by chemotherapeutic treatment with temozolomide (TMZ) in mutant IDH1 tumors, in contrast to previous reports in GBM. Our results demonstrate the unusual metabolic imaging profile of mutant IDH1 gliomas, which, when combined with other clinically available imaging methods, could be used to detect the presence of the IDH1 mutation in vivo.
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Key Words
- 2-HG, 2-hydroxyglutarate
- AIF, arterial input function
- AUC, area under the curve
- DNP, dynamic nuclear polarization
- DNP-MR, dynamic nuclear polarization magnetic resonance
- EGF, epidermal growth factor
- EGFR, epidermal growth factor receptor
- FA, flip angle
- FGF, fibroblast growth factor
- FLAIR, fluid attenuated inversion recovery
- FOV, field of view
- GBM, glioblastoma
- Glioma
- Hyperpolarized 13C Magnetic Resonance Spectroscopy (MRS)
- IDH1, isocitrate dehydrogenase 1
- Isocitrate dehydrogenase 1 (IDH1) mutation
- LDHA, lactate dehydrogenase A
- MCT1, monocarboxylate transporter 1
- MCT4, monocarboxylate transporter 4
- MR, magnetic resonance
- MRI, magnetic resonance imaging
- MRS, magnetic resonance spectroscopic imaging
- MRS, magnetic resonance spectroscopy
- Metabolic reprogramming
- NA, number of averages
- NT, number of transients
- PBS, phosphate-buffer saline
- PDGF, platelet-derived growth factor
- PET, positron emission tomography
- PI3K, phosphoinositide 3-kinase
- PTEN, phosphatase and tensin homolog
- RB1, retinoblastoma protein 1
- SLC16A1, solute carrier family 16 member 1
- SLC16A3, solute carrier family 16 member 3
- SNR, signal-to-noise ratio
- SW, spectral width
- TCGA, The Cancer Genome Atlas
- TE, echo time
- TMZ, temozolomide
- TP53, tumor protein p53
- TR, repetition time
- Tacq, acquisition time
- VOI, voxel of interest
- mTOR, mammalian target of rapamycin
- α-KG, α-ketoglutarate
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Affiliation(s)
- Myriam M. Chaumeil
- Department of Radiology and Biomedical Imaging, Mission Bay Campus, 1700 4th Street, Byers Hall, University of California, 94158 San Francisco, CA, United States
| | - Marina Radoul
- Department of Radiology and Biomedical Imaging, Mission Bay Campus, 1700 4th Street, Byers Hall, University of California, 94158 San Francisco, CA, United States
| | - Chloé Najac
- Department of Radiology and Biomedical Imaging, Mission Bay Campus, 1700 4th Street, Byers Hall, University of California, 94158 San Francisco, CA, United States
| | - Pia Eriksson
- Department of Radiology and Biomedical Imaging, Mission Bay Campus, 1700 4th Street, Byers Hall, University of California, 94158 San Francisco, CA, United States
| | - Pavithra Viswanath
- Department of Radiology and Biomedical Imaging, Mission Bay Campus, 1700 4th Street, Byers Hall, University of California, 94158 San Francisco, CA, United States
| | - Michael D. Blough
- Department of Clinical Neurosciences, Foothills Hospital, 1403 29 St NW, Calgary, AB T2N 2T9, Canada
| | - Charles Chesnelong
- Department of Clinical Neurosciences, Foothills Hospital, 1403 29 St NW, Calgary, AB T2N 2T9, Canada
| | - H. Artee Luchman
- Department of Clinical Neurosciences, Foothills Hospital, 1403 29 St NW, Calgary, AB T2N 2T9, Canada
| | - J. Gregory Cairncross
- Department of Clinical Neurosciences, Foothills Hospital, 1403 29 St NW, Calgary, AB T2N 2T9, Canada
| | - Sabrina M. Ronen
- Department of Radiology and Biomedical Imaging, Mission Bay Campus, 1700 4th Street, Byers Hall, University of California, 94158 San Francisco, CA, United States
- Brain Tumor Research Center, Helen Diller Family Cancer Research Building, 1450 3rd Street, University of California, 94158 San Francisco, CA, United States
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13
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Chen Y, Kim H, Bok R, Sukumar S, Mu X, Sheldon RA, Barkovich AJ, Ferriero DM, Xu D. Pyruvate to Lactate Metabolic Changes during Neurodevelopment Measured Dynamically Using Hyperpolarized 13C Imaging in Juvenile Murine Brain. Dev Neurosci 2015; 38:34-40. [PMID: 26550989 DOI: 10.1159/000439271] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/08/2015] [Indexed: 12/21/2022] Open
Abstract
Hyperpolarized 13C magnetic resonance imaging has recently been used to dynamically image metabolism in vivo. This technique provides the capability to investigate metabolic changes in mouse brain development over multiple time points. In this study, we used 13C magnetic resonance spectroscopic imaging and hyperpolarized 13C-1-labeled pyruvate to analyze its conversion into lactate. We also applied T2-weighted anatomical imaging to examine brain volume changes starting from postnatal day 18 (P18). We combined these results with body weight measurements for a comprehensive interpretation of mouse brain maturation. Both the produced lactate level and pyruvate to lactate conversion rate decreased with increasing age in a linear manner. Total brain volume remained the same after P18, even though body weight continued to grow exponentially. Our results have shown that the rate of metabolism of 13C-1 pyruvate to lactate in brain is high in the young mouse and decreases with age. The brain at P18 is still relatively immature and continues to develop even as the total brain volume remains the same.
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Affiliation(s)
- Yiran Chen
- Department of Radiology and Biomedical Imaging, UCSF, San Francisco, Calif., USA
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14
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Leon Swisher C, Koelsch B, Sukumar S, Sriram R, Santos RD, Wang ZJ, Kurhanewicz J, Vigneron D, Larson P. Dynamic UltraFast 2D EXchange SpectroscopY (UF-EXSY) of hyperpolarized substrates. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2015; 257:102-9. [PMID: 26117655 PMCID: PMC4515769 DOI: 10.1016/j.jmr.2015.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/22/2015] [Accepted: 05/28/2015] [Indexed: 05/14/2023]
Abstract
In this work, we present a new ultrafast method for acquiring dynamic 2D EXchange SpectroscopY (EXSY) within a single acquisition. This technique reconstructs two-dimensional EXSY spectra from one-dimensional spectra based on the phase accrual during echo times. The Ultrafast-EXSY acquisition overcomes long acquisition times typically needed to acquire 2D NMR data by utilizing sparsity and phase dependence to dramatically undersample in the indirect time dimension. This allows for the acquisition of the 2D spectrum within a single shot. We have validated this method in simulations and hyperpolarized enzyme assay experiments separating the dehydration of pyruvate and lactate-to-pyruvate conversion. In a renal cell carcinoma cell (RCC) line, bidirectional exchange was observed. This new technique revealed decreased conversion of lactate-to-pyruvate with high expression of monocarboxylate transporter 4 (MCT4), known to correlate with aggressive cancer phenotypes. We also showed feasibility of this technique in vivo in a RCC model where bidirectional exchange was observed for pyruvate-lactate, pyruvate-alanine, and pyruvate-hydrate and were resolved in time. Broadly, the technique is well suited to investigate the dynamics of multiple exchange pathways and applicable to hyperpolarized substrates where chemical exchange has shown great promise across a range of disciplines.
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Affiliation(s)
- Christine Leon Swisher
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, United States; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, United States
| | - Bertram Koelsch
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, United States; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, United States
| | - Subramianam Sukumar
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, United States
| | - Renuka Sriram
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, United States
| | - Romelyn Delos Santos
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, United States
| | - Zhen Jane Wang
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, United States
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, United States; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, United States
| | - Daniel Vigneron
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, United States; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, United States.
| | - Peder Larson
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, United States; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, United States.
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15
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Chaumeil MM, Najac C, Ronen SM. Studies of Metabolism Using (13)C MRS of Hyperpolarized Probes. Methods Enzymol 2015; 561:1-71. [PMID: 26358901 DOI: 10.1016/bs.mie.2015.04.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
First described in 2003, the dissolution dynamic nuclear polarization (DNP) technique, combined with (13)C magnetic resonance spectroscopy (MRS), has since been used in numerous metabolic studies and has become a valuable metabolic imaging method. DNP dramatically increases the level of polarization of (13)C-labeled compounds resulting in an increase in the signal-to-noise ratio (SNR) of over 50,000 fold for the MRS spectrum of hyperpolarized compounds. The high SNR enables rapid real-time detection of metabolism in cells, tissues, and in vivo. This chapter will present a comprehensive review of the DNP approaches that have been used to monitor metabolism in living systems. First, the list of (13)C DNP probes developed to date will be presented, with a particular focus on the most commonly used probe, namely [1-(13)C] pyruvate. In the next four sections, we will then describe the different factors that need to be considered when designing (13)C DNP probes for metabolic studies, conducting in vitro or in vivo hyperpolarized experiments, as well as acquiring, analyzing, and modeling hyperpolarized (13)C data.
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Affiliation(s)
- Myriam M Chaumeil
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Chloé Najac
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Sabrina M Ronen
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA.
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16
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Hyperpolarized (13)C Magnetic Resonance and Its Use in Metabolic Assessment of Cultured Cells and Perfused Organs. Methods Enzymol 2015; 561:73-106. [PMID: 26358902 DOI: 10.1016/bs.mie.2015.04.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Diseased tissue is often characterized by abnormalities in intermediary metabolism. Observing these alterations in situ may lead to an improved understanding of pathological processes and novel ways to monitor these processes noninvasively in human patients. Although (13)C is a stable isotope safe for use in animal models of disease as well as human subjects, its utility as a metabolic tracer has largely been limited to ex vivo analyses employing analytical techniques like mass spectrometry or nuclear magnetic resonance spectroscopy. Neither of these techniques is suitable for noninvasive metabolic monitoring, and the low abundance and poor gyromagnetic ratio of conventional (13)C make it a poor nucleus for imaging. However, the recent advent of hyperpolarization methods, particularly dynamic nuclear polarization (DNP), makes it possible to enhance the spin polarization state of (13)C by many orders of magnitude, resulting in a temporary amplification of the signal sufficient for monitoring kinetics of enzyme-catalyzed reactions in living tissue through magnetic resonance spectroscopy or magnetic resonance imaging. Here, we review DNP techniques to monitor metabolism in cultured cells, perfused hearts, and perfused livers, focusing on our experiences with hyperpolarized [1-(13)C]pyruvate. We present detailed approaches to optimize the DNP procedure, streamline biological sample preparation, and maximize detection of specific metabolic activities. We also discuss practical aspects in the choice of metabolic substrates for hyperpolarization studies and outline some of the current technical and conceptual challenges in the field, including efforts to use hyperpolarization to quantify metabolic rates in vivo.
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17
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Gordon JW, Niles DJ, Adamson EB, Johnson KM, Fain SB. Application of flow sensitive gradients for improved measures of metabolism using hyperpolarized (13) c MRI. Magn Reson Med 2015; 75:1242-8. [PMID: 25951611 DOI: 10.1002/mrm.25584] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 11/23/2014] [Accepted: 11/25/2014] [Indexed: 12/26/2022]
Abstract
PURPOSE To develop the use of bipolar gradients to suppress partial-volume and flow-related artifacts from macrovascular, hyperpolarized spins. THEORY AND METHODS Digital simulations were performed over a range of spatial resolutions and gradient strengths to determine the optimal bipolar gradient strength and duration to suppress flowing spins while minimizing signal loss from static tissue. In vivo experiments were performed to determine the efficacy of this technique to suppress vascular signal in the study of hyperpolarized [1-(13)C]pyruvate renal metabolism. RESULTS Digital simulations showed that in the absence of bipolar gradients, partial-volume artifacts from the vasculature were still present, causing underestimation of the apparent reaction rate of pyruvate to lactate (kP). The addition of a bipolar gradient with b = 32 s/mm(2) sufficiently suppressed the vascular signal without a substantial decrease in signal from static tissue. In vivo results corroborate digital simulations, with similar peak lactate signal to noise ratio (SNR) but substantially different kP in the presence of bipolar gradients. CONCLUSION The proposed approach suppresses signal from flowing spins while minimizing signal loss from static tissue, removing contaminating signal from the vasculature and increasing kinetic modeling accuracy without substantially sacrificing SNR or temporal resolution.
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Affiliation(s)
- Jeremy W Gordon
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - David J Niles
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Erin B Adamson
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kevin M Johnson
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Sean B Fain
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA.,Radiology, University of Wisconsin-Madison, Madison, Madison, Wisconsin, USA.,Biomedical Engineering, University of Wisconsin-Madison, Madison, Madison, Wisconsin, USA
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18
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Lerche MH, Jensen PR, Karlsson M, Meier S. NMR insights into the inner workings of living cells. Anal Chem 2014; 87:119-32. [PMID: 25084065 DOI: 10.1021/ac501467x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mathilde H Lerche
- Albeda Research , Gamle Carlsberg Vej 10, 1799 Copenhagen V, Denmark
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19
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Søgaard LV, Schilling F, Janich MA, Menzel MI, Ardenkjaer-Larsen JH. In vivo measurement of apparent diffusion coefficients of hyperpolarized ¹³C-labeled metabolites. NMR IN BIOMEDICINE 2014; 27:561-9. [PMID: 24664927 DOI: 10.1002/nbm.3093] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 01/09/2014] [Accepted: 01/22/2014] [Indexed: 05/14/2023]
Abstract
The combination of hyperpolarized MRS with diffusion weighting (dw) allows for determination of the apparent diffusion coefficient (ADC), which is indicative of the intra- or extracellular localization of the metabolite. Here, a slice-selective pulsed-gradient spin echo sequence was implemented to acquire a series of dw spectra from rat muscle in vivo to determine the ADCs of multiple metabolites after a single injection of hyperpolarized [1- ¹³C]pyruvate. An optimal control optimized universal-rotation pulse was used for refocusing to minimize signal loss caused by B1 imperfections. Non-dw spectra were acquired interleaved with the dw spectra and these were used to correct for signal decay during the acquisition as a result of T1 decay, pulse imperfections, flow etc. The data showed that the ADC values for [1- ¹³C]lactate (0.4-0.7 µm² /ms) and [1- ¹³C]alanine (0.4-0.9 µm² /ms) were about a factor of two lower than the ADC of [1- ¹³C]pyruvate (1.1-1.5 µm²/ms). This indicates a more restricted diffusion space for the former two metabolites consistent with lactate and alanine being intracellular. The higher ADC for pyruvate (similar to the proton ADC) reflected that the injected substance was not confined inside the muscle cells but also present extracellular.
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Affiliation(s)
- Lise Vejby Søgaard
- Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Denmark
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20
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Yang C, Harrison C, Jin ES, Chuang DT, Sherry AD, Malloy CR, Merritt ME, DeBerardinis RJ. Simultaneous steady-state and dynamic 13C NMR can differentiate alternative routes of pyruvate metabolism in living cancer cells. J Biol Chem 2014; 289:6212-6224. [PMID: 24415759 PMCID: PMC3937686 DOI: 10.1074/jbc.m113.543637] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Indexed: 08/25/2023] Open
Abstract
Metabolic reprogramming facilitates cancer cell growth, so quantitative metabolic flux measurements could produce useful biomarkers. However, current methods to analyze flux in vivo provide either a steady-state overview of relative activities (infusion of (13)C and analysis of extracted metabolites) or a dynamic view of a few reactions (hyperpolarized (13)C spectroscopy). Moreover, although hyperpolarization has successfully quantified pyruvate-lactate exchanges, its ability to assess mitochondrial pyruvate metabolism is unproven in cancer. Here, we combined (13)C hyperpolarization and isotopomer analysis to quantify multiple fates of pyruvate simultaneously. Two cancer cell lines with divergent pyruvate metabolism were incubated with thermally polarized [3-(13)C]pyruvate for several hours, then briefly exposed to hyperpolarized [1-(13)C]pyruvate during acquisition of NMR spectra using selective excitation to maximize detection of H[(13)C]O3(-) and [1-(13)C]lactate. Metabolites were then extracted and subjected to isotopomer analysis to determine relative rates of pathways involving [3-(13)C]pyruvate. Quantitation of hyperpolarized H[(13)C]O3(-) provided a single definitive metabolic rate, which was then used to convert relative rates derived from isotopomer analysis into quantitative fluxes. This revealed that H[(13)C]O3(-) appearance reflects activity of pyruvate dehydrogenase rather than pyruvate carboxylation followed by subsequent decarboxylation reactions. Glucose substantially altered [1-(13)C]pyruvate metabolism, enhancing exchanges with [1-(13)C]lactate and suppressing H[(13)C]O3(-) formation. Furthermore, inhibiting Akt, an oncogenic kinase that stimulates glycolysis, reversed these effects, indicating that metabolism of pyruvate by both LDH and pyruvate dehydrogenase is subject to the acute effects of oncogenic signaling on glycolysis. The data suggest that combining (13)C isotopomer analyses and dynamic hyperpolarized (13)C spectroscopy may enable quantitative flux measurements in living tumors.
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Affiliation(s)
- Chendong Yang
- From the Children's Medical Center Research Institute
| | | | | | | | | | - Craig R. Malloy
- Advanced Imaging Research Center
- Veterans Affairs North Texas Healthcare System, Lancaster, Texas 75216
| | - Matthew E. Merritt
- Advanced Imaging Research Center
- Department of Molecular Biophysics, and
- Department of Biomedical Engineering, University of Texas Southwestern Medical Center, Dallas, Texa 75390 and
| | - Ralph J. DeBerardinis
- From the Children's Medical Center Research Institute
- McDermott Center for Human Growth and Development
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21
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Thapar R, Titus MA. Recent Advances in Metabolic Profiling And Imaging of Prostate Cancer. ACTA ACUST UNITED AC 2014; 2:53-69. [PMID: 25632377 DOI: 10.2174/2213235x02666140301002510] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Cancer is a metabolic disease. Cancer cells, being highly proliferative, show significant alterations in metabolic pathways such as glycolysis, respiration, the tricarboxylic acid (TCA) cycle, oxidative phosphorylation, lipid metabolism, and amino acid metabolism. Metabolites like peptides, nucleotides, products of glycolysis, the TCA cycle, fatty acids, and steroids can be an important read out of disease when characterized in biological samples such as tissues and body fluids like urine, serum, etc. The cancer metabolome has been studied since the 1960s by analytical techniques such as mass spectrometry (MS) and nuclear magnetic resonance (NMR) spectroscopy. Current research is focused on the identification and validation of biomarkers in the cancer metabolome that can stratify high-risk patients and distinguish between benign and advanced metastatic forms of the disease. In this review, we discuss the current state of prostate cancer metabolomics, the biomarkers that show promise in distinguishing indolent from aggressive forms of the disease, the strengths and limitations of the analytical techniques being employed, and future applications of metabolomics in diagnostic imaging and personalized medicine of prostate cancer.
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Affiliation(s)
- Roopa Thapar
- Department of Biochemistry and Cell Biology, Rice University, Houston, TX 77251-1892, USA
| | - Mark A Titus
- Department of Genitourinary Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston TX 77030, USA
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22
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Xing Y, Reed GD, Pauly JM, Kerr AB, Larson PEZ. Optimal variable flip angle schemes for dynamic acquisition of exchanging hyperpolarized substrates. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2013; 234:75-81. [PMID: 23845910 PMCID: PMC3765634 DOI: 10.1016/j.jmr.2013.06.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 06/01/2013] [Accepted: 06/03/2013] [Indexed: 05/22/2023]
Abstract
In metabolic MRI with hyperpolarized contrast agents, the signal levels vary over time due to T1 decay, T2 decay following RF excitations, and metabolic conversion. Efficient usage of the nonrenewable hyperpolarized magnetization requires specialized RF pulse schemes. In this work, we introduce two novel variable flip angle schemes for dynamic hyperpolarized MRI in which the flip angle is varied between excitations and between metabolites. These were optimized to distribute the magnetization relatively evenly throughout the acquisition by accounting for T1 decay, prior RF excitations, and metabolic conversion. Simulation results are presented to confirm the flip angle designs and evaluate the variability of signal dynamics across typical ranges of T1 and metabolic conversion. They were implemented using multiband spectral-spatial RF pulses to independently modulate the flip angle at various chemical shift frequencies. With these schemes we observed increased SNR of [1-(13)C]lactate generated from [1-(13)C]pyruvate, particularly at later time points. This will allow for improved characterization of tissue perfusion and metabolic profiles in dynamic hyperpolarized MRI.
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Affiliation(s)
- Yan Xing
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
| | - Galen D. Reed
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
| | - John M. Pauly
- Magnetic Resonance Systems Research Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California
| | - Adam B. Kerr
- Magnetic Resonance Systems Research Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California
| | - Peder E. Z. Larson
- Department of Radiology and Biomedical Imaging, University of California - San Francisco, San Francisco, California
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