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McLean MA, Hinks RS, Kaggie JD, Woitek R, Riemer F, Graves MJ, McIntyre DJO, Gallagher FA, Schulte RF. Characterization and correction of center-frequency effects in X-nuclear eddy current compensations on a clinical MR system. Magn Reson Med 2021; 85:2370-2376. [PMID: 33274790 PMCID: PMC7898706 DOI: 10.1002/mrm.28607] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 10/23/2020] [Accepted: 10/29/2020] [Indexed: 01/25/2023]
Abstract
PURPOSE The aim of the study was to investigate whether incorrectly compensated eddy currents are the source of persistent X-nuclear spectroscopy and imaging artifacts, as well as methods to correct this. METHODS Pulse-acquire spectra were collected for 1 H and X-nuclei (23 Na or 31 P) using the minimum TR permitted on a 3T clinical MRI system. Data were collected in 3 orientations (axial, sagittal, and coronal) with the spoiler gradient at the end of the TR applied along the slice direction for each. Modifications to system calibration files to tailor eddy current compensation for each X-nucleus were developed and applied, and data were compared with and without these corrections for: slice-selective MRS (for 23 Na and 31 P), 2D spiral trajectories (for 13 C), and 3D cones trajectories (for 23 Na). RESULTS Line-shape distortions characteristic of eddy currents were demonstrated for X-nuclei, which were not seen for 1 H. The severity of these correlated with the amplitude of the eddy current frequency compensation term applied by the system along the axis of the applied spoiler gradient. A proposed correction to eddy current compensation, taking account of the gyromagnetic ratio, was shown to dramatically reduce these distortions. The same correction was also shown to improve data quality of non-Cartesian imaging (2D spiral and 3D cones trajectories). CONCLUSION A simple adaptation of the default compensation for eddy currents was shown to eliminate a range of artifacts detected on X-nuclear spectroscopy and imaging.
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Affiliation(s)
- Mary A. McLean
- Department of RadiologyUniversity of CambridgeCambridgeUnited Kingdom
- Cancer Research UK Cambridge InstituteUniversity of CambridgeCambridgeUnited Kingdom
| | | | - Joshua D. Kaggie
- Department of RadiologyUniversity of CambridgeCambridgeUnited Kingdom
| | - Ramona Woitek
- Department of RadiologyUniversity of CambridgeCambridgeUnited Kingdom
| | - Frank Riemer
- MMIV, Department of RadiologyHaukeland University HospitalBergenNorway
| | - Martin J. Graves
- Department of RadiologyUniversity of CambridgeCambridgeUnited Kingdom
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2
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Elevated Tumor Lactate and Efflux in High-grade Prostate Cancer demonstrated by Hyperpolarized 13C Magnetic Resonance Spectroscopy of Prostate Tissue Slice Cultures. Cancers (Basel) 2020; 12:cancers12030537. [PMID: 32110965 PMCID: PMC7139946 DOI: 10.3390/cancers12030537] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 12/11/2022] Open
Abstract
Non-invasive assessment of the biological aggressiveness of prostate cancer (PCa) is needed for men with localized disease. Hyperpolarized (HP) 13C magnetic resonance (MR) spectroscopy is a powerful approach to image metabolism, specifically the conversion of HP [1-13C]pyruvate to [1-13C]lactate, catalyzed by lactate dehydrogenase (LDH). Significant increase in tumor lactate was measured in high-grade PCa relative to benign and low-grade cancer, suggesting that HP 13C MR could distinguish low-risk (Gleason score ≤3 + 4) from high-risk (Gleason score ≥4 + 3) PCa. To test this and the ability of HP 13C MR to detect these metabolic changes, we cultured prostate tissues in an MR-compatible bioreactor under continuous perfusion. 31P spectra demonstrated good viability and dynamic HP 13C-pyruvate MR demonstrated that high-grade PCa had significantly increased lactate efflux compared to low-grade PCa and benign prostate tissue. These metabolic differences are attributed to significantly increased LDHA expression and LDH activity, as well as significantly increased monocarboxylate transporter 4 (MCT4) expression in high- versus low- grade PCa. Moreover, lactate efflux, LDH activity, and MCT4 expression were not different between low-grade PCa and benign prostate tissues, indicating that these metabolic alterations are specific for high-grade disease. These distinctive metabolic alterations can be used to differentiate high-grade PCa from low-grade PCa and benign prostate tissues using clinically translatable HP [1-13C]pyruvate MR.
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3
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Korenchan DE, Bok R, Sriram R, Liu K, Santos RD, Qin H, Lobach I, Korn N, Wilson DM, Kurhanewicz J, Flavell RR. Hyperpolarized in vivo pH imaging reveals grade-dependent acidification in prostate cancer. Oncotarget 2019; 10:6096-6110. [PMID: 31692908 PMCID: PMC6817439 DOI: 10.18632/oncotarget.27225] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 09/10/2019] [Indexed: 01/29/2023] Open
Abstract
There is an unmet clinical need for new and robust imaging biomarkers to distinguish indolent from aggressive prostate cancer. Hallmarks of aggressive tumors such as a decrease in extracellular pH (pHe) can potentially be used to identify aggressive phenotypes. In this study, we employ an optimized, high signal-to-noise ratio hyperpolarized (HP) 13C pHe imaging method to discriminate between indolent and aggressive disease in a murine model of prostate cancer. Transgenic adenocarcinoma of the mouse prostate (TRAMP) mice underwent a multiparametric MR imaging exam, including HP [13C] bicarbonate MRI for pHe, with 1H apparent diffusion coefficient (ADC) mapping and HP [1-13C] pyruvate MRI to study lactate metabolism. Tumor tissue was excised for histological staining and qRT-PCR to quantify mRNA expression for relevant glycolytic enzymes and transporters. We observed good separation in pHe between low- and high-grade tumor regions, with high-grade tumors demonstrating a lower pHe. The pHe also correlated strongly with monocarboxylate transporter Mct4 gene expression across all tumors, suggesting that lactate export via MCT4 is associated with acidification in this model. Our results implicate extracellular acidification as an indicator of indolent-to-aggressive transition in prostate cancer and suggest feasibility of HP pHe imaging to detect high-grade, clinically significant disease in men as part of a multiparametric MRI examination.
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Affiliation(s)
- David E Korenchan
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Robert Bok
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Renuka Sriram
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Kristina Liu
- Department of Physical Chemistry, Technical University of Munich, Munich, Germany
| | - Romelyn Delos Santos
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Hecong Qin
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Iryna Lobach
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
| | - Natalie Korn
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - David M Wilson
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA.,Department of Pharmaceutical Chemistry, University of California, San Francisco, CA, USA.,Department of Urology, University of California, San Francisco, CA, USA
| | - Robert R Flavell
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA.,Department of Pharmaceutical Chemistry, University of California, San Francisco, CA, USA
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4
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Korenchan DE, Gordon JW, Subramaniam S, Sriram R, Baligand C, VanCriekinge M, Bok R, Vigneron DB, Wilson DM, Larson PEZ, Kurhanewicz J, Flavell RR. Using bidirectional chemical exchange for improved hyperpolarized [ 13 C]bicarbonate pH imaging. Magn Reson Med 2019; 82:959-972. [PMID: 31050049 DOI: 10.1002/mrm.27780] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/29/2019] [Accepted: 04/01/2019] [Indexed: 12/18/2022]
Abstract
PURPOSE Rapid chemical exchange can affect SNR and pH measurement accuracy for hyperpolarized pH imaging with [13 C]bicarbonate. The purpose of this work was to investigate chemical exchange effects on hyperpolarized imaging sequences to identify optimal sequence parameters for high SNR and pH accuracy. METHODS Simulations were performed under varying rates of bicarbonate-CO2 chemical exchange to analyze exchange effects on pH quantification accuracy and SNR under different sampling schemes. Four pulse sequences, including 1 new technique, a multiple-excitation 2D EPI (multi-EPI) sequence, were compared in phantoms using hyperpolarized [13 C]bicarbonate, varying parameters such as tip angles, repetition time, order of metabolite excitation, and refocusing pulse design. In vivo hyperpolarized bicarbonate-CO2 exchange measurements were made in transgenic murine prostate tumors to select in vivo imaging parameters. RESULTS Modeling of bicarbonate-CO2 exchange identified a multiple-excitation scheme for increasing CO2 SNR by up to a factor of 2.7. When implemented in phantom imaging experiments, these sampling schemes were confirmed to yield high pH accuracy and SNR gains. Based on measured bicarbonate-CO2 exchange in vivo, a 47% CO2 SNR gain is predicted. CONCLUSION The novel multi-EPI pulse sequence can boost CO2 imaging signal in hyperpolarized 13 C bicarbonate imaging while introducing minimal pH bias, helping to surmount a major hurdle in hyperpolarized pH imaging.
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Affiliation(s)
- David E Korenchan
- 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
| | - Sukumar Subramaniam
- 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
| | - Celine Baligand
- Molecular Imaging Research Center, French Alternative Energies and Atomic Energy Commission Fontenay-aux-Roses, France
| | - Mark VanCriekinge
- 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
| | - 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, University of California, San Francisco, Berkeley, California
| | - David M Wilson
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California
| | - 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, University of California, San Francisco, Berkeley, 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, University of California, San Francisco, Berkeley, California
| | - Robert R Flavell
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California
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5
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Chen HY, Gordon JW, Bok RA, Cao P, von Morze C, van Criekinge M, Milshteyn E, Carvajal L, Hurd RE, Kurhanewicz J, Vigneron DB, Larson PE. Pulse sequence considerations for quantification of pyruvate-to-lactate conversion k PL in hyperpolarized 13 C imaging. NMR IN BIOMEDICINE 2019; 32:e4052. [PMID: 30664305 PMCID: PMC6380928 DOI: 10.1002/nbm.4052] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 10/16/2018] [Accepted: 11/09/2018] [Indexed: 05/26/2023]
Abstract
Hyperpolarized 13 C MRI takes advantage of the unprecedented 50 000-fold signal-to-noise ratio enhancement to interrogate cancer metabolism in patients and animals. It can measure the pyruvate-to-lactate conversion rate, kPL , a metabolic biomarker of cancer aggressiveness and progression. Therefore, it is crucial to evaluate kPL reliably. In this study, three sequence components and parameters that modulate kPL estimation were identified and investigated in model simulations and through in vivo animal studies using several specifically designed pulse sequences. These factors included a magnetization spoiling effect due to RF pulses, a crusher gradient-induced flow suppression, and intrinsic image weightings due to relaxation. Simulation showed that the RF-induced magnetization spoiling can be substantially improved using an inputless kPL fitting. In vivo studies found a significantly higher apparent kPL with an additional gradient that leads to flow suppression (kPL,FID-Delay,Crush /kPL,FID-Delay = 1.37 ± 0.33, P < 0.01, N = 6), which agrees with simulation outcomes (12.5% kPL error with Δv = 40 cm/s), indicating that the gradients predominantly suppressed flowing pyruvate spins. Significantly lower kPL was found using a delayed free induction decay (FID) acquisition versus a minimum-TE version (kPL,FID-Delay /kPL,FID = 0.67 ± 0.09, P < 0.01, N = 5), and the lactate peak had broader linewidth than pyruvate (Δωlactate /Δωpyruvate = 1.32 ± 0.07, P < 0.000 01, N = 13). This illustrated that lactate's T2 *, shorter than that of pyruvate, can affect calculated kPL values. We also found that an FID sequence yielded significantly lower kPL versus a double spin-echo sequence that includes spin-echo spoiling, flow suppression from crusher gradients, and more T2 weighting (kPL,DSE /kPL,FID = 2.40 ± 0.98, P < 0.0001, N = 7). In summary, the pulse sequence, as well as its interaction with pharmacokinetics and the tissue microenvironment, can impact and be optimized for the measurement of kPL . The data acquisition and analysis pipelines can work synergistically to provide more robust and reproducible kPL measures for future preclinical and clinical studies.
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Affiliation(s)
- Hsin-Yu Chen
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Jeremy W. Gordon
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Robert A. Bok
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Peng Cao
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Cornelius von Morze
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Mark van Criekinge
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Eugene Milshteyn
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Lucas Carvajal
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Ralph E. Hurd
- Department of Radiology, Stanford University, California, United States
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Daniel B. Vigneron
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Peder E.Z. Larson
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
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6
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Takado Y, Cheng T, Bastiaansen JAM, Yoshihara HAI, Lanz B, Mishkovsky M, Lengacher S, Comment A. Hyperpolarized 13C Magnetic Resonance Spectroscopy Reveals the Rate-Limiting Role of the Blood-Brain Barrier in the Cerebral Uptake and Metabolism of l-Lactate in Vivo. ACS Chem Neurosci 2018; 9:2554-2562. [PMID: 29771492 PMCID: PMC6119468 DOI: 10.1021/acschemneuro.8b00066] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The dynamics of l-lactate transport across the blood-brain barrier (BBB) and its cerebral metabolism are still subject to debate. We studied lactate uptake and intracellular metabolism in the mouse brain using hyperpolarized 13C magnetic resonance spectroscopy (MRS). Following the intravenous injection of hyperpolarized [1-13C]lactate, we observed that the distribution of the 13C label between lactate and pyruvate, which has been shown to be representative of their pool size ratio, is different in NMRI and C57BL/6 mice, the latter exhibiting a higher level of cerebral lactate dehydrogenase A ( Ldha) expression. On the basis of this observation, and an additional set of experiments showing that the cerebral conversion of [1-13C]lactate to [1-13C]pyruvate increases after exposing the brain to ultrasound irradiation that reversibly opens the BBB, we concluded that lactate transport is rate-limited by the BBB, with a 30% increase in lactate uptake after its disruption. It was also deduced from these results that hyperpolarized 13C MRS can be used to detect a variation in cerebral lactate uptake of <40 nmol in a healthy brain during an in vivo experiment lasting only 75 s, opening new opportunities to study the role of lactate in brain metabolism.
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Affiliation(s)
- Yuhei Takado
- Institute of Physics of Biological Systems, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- Department of Functional Brain Imaging Research, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Tian Cheng
- Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Cambridge, United Kingdom
| | - Jessica A. M. Bastiaansen
- Laboratory of Functional and Metabolic Imaging, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- Department of Radiology, University Hospital Lausanne (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Hikari A. I. Yoshihara
- Institute of Physics of Biological Systems, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Bernard Lanz
- Sir Peter Mansfield Magnetic Resonance Center, The University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Mor Mishkovsky
- Laboratory of Functional and Metabolic Imaging, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Sylvain Lengacher
- Laboratory of Neuroenergetics and Cellular Dynamics, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Arnaud Comment
- Institute of Physics of Biological Systems, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- General Electric Healthcare, Chalfont St Giles, Buckinghamshire HP8 4SP, United Kingdom
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7
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Wang J, Hesketh RL, Wright AJ, Brindle KM. Hyperpolarized 13 C spectroscopic imaging using single-shot 3D sequences with unpaired adiabatic refocusing pulses. NMR IN BIOMEDICINE 2018; 31:e4004. [PMID: 30198124 PMCID: PMC6220795 DOI: 10.1002/nbm.4004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/18/2018] [Accepted: 07/10/2018] [Indexed: 05/05/2023]
Abstract
Hyperpolarized MRI with 13 C-labeled metabolites has enabled metabolic imaging of tumors in vivo. The heterogeneous nature of tumors and the limited lifetime of the hyperpolarization require high resolution, both temporally and spatially. We describe two sequences that make more efficient use of the 13 C polarization than previously described single-shot 3D sequences. With these sequences, the target metabolite resonances were excited using spectral-spatial pulses and the data acquired using spiral readouts from a series of echoes created using a fast-spin-echo sequence employing adiabatic 180° pulses. The third dimension was encoded with blipped gradients applied in an interleaved order to the echo train. Adiabatic inversion pulses applied in the absence of slice selection gradients allowed acquisition of signal from odd echoes, formed by unpaired adiabatic pulses, as well as from even echoes. The sequences were tested on tumor-bearing mice following intravenous injection of hyperpolarized [1-13 C]pyruvate. [1-13 C] pyruvate and [1-13 C] lactate images were acquired in vivo with a 4 × 4 × 2 cm3 field of view and a 32 × 32 × 16 matrix, leading to a nominal resolution of 1.25 × 1.25 × 1.25 mm3 and an effective resolution of 1.25 × 1.25 × 4.5 mm3 when the z-direction point spread function was taken into account. The acquisition of signal from more echoes also allowed for an improvement in the signal-to-noise ratio for resonances with longer T2 relaxation times. The pulse sequences described here produced hyperpolarized 13 C images with improved resolution and signal-to-noise ratio when compared with similar sequences described previously.
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Affiliation(s)
- Jiazheng Wang
- Cancer Research UK Cambridge InstituteUniversity of CambridgeLi Ka Shing CentreCambridgeUK
| | - Richard L. Hesketh
- Cancer Research UK Cambridge InstituteUniversity of CambridgeLi Ka Shing CentreCambridgeUK
| | - Alan J. Wright
- Cancer Research UK Cambridge InstituteUniversity of CambridgeLi Ka Shing CentreCambridgeUK
| | - Kevin M. Brindle
- Cancer Research UK Cambridge InstituteUniversity of CambridgeLi Ka Shing CentreCambridgeUK
- Department of BiochemistryUniversity of CambridgeCambridgeUK
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8
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Zhu X, Gordon JW, Bok RA, Kurhanewicz J, Larson PEZ. Dynamic diffusion-weighted hyperpolarized 13 C imaging based on a slice-selective double spin echo sequence for measurements of cellular transport. Magn Reson Med 2018; 81:2001-2010. [PMID: 30368893 DOI: 10.1002/mrm.27501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 07/27/2018] [Accepted: 07/29/2018] [Indexed: 12/22/2022]
Abstract
PURPOSE To develop a pulse sequence to dynamically measure the ADC of hyperpolarized substrates during their perfusion, metabolic conversion, and transport. METHODS We proposed a slice-selective double spin echo sequence for dynamic hyperpolarized 13 C diffusion-weighted imaging. The proposed pulse sequence was optimized for a high field preclinical scanner through theoretical analysis and simulation. The performance of the method was compared to non-slice-selective double spin echo via in vivo studies. We also validated the sequence for dynamic ADC measurement in both phantom studies and transgenic mouse model of prostate cancer studies. RESULTS The optimized pulse sequence outperforms the traditional sequence with smaller saturation effects on the magnetization of hyperpolarized compounds that allowed more dynamic imaging frames covering a longer imaging time window. In pre-clinical studies (N = 8), the dynamic hyperpolarized lactate ADC maps of 6 studies in the prostate tumors showed an increase measured ADC over time, which might be related to lactate efflux from the tumor cells. CONCLUSIONS The proposed sequence was validated and shown to improve dynamic diffusion weighted imaging compared to the traditional double spin echo sequence, providing ADC maps of lactate through time.
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Affiliation(s)
- Xucheng Zhu
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California.,UCSF/UC Berkeley Graduate Program in Bioengineering, University of California, San Francisco, California
| | - Jeremy W Gordon
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California
| | - Robert A Bok
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California
| | - Peder E Z Larson
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California.,UCSF/UC Berkeley Graduate Program in Bioengineering, University of California, San Francisco, California
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9
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Zhang G, Ahola S, Lerche MH, Telkki VV, Hilty C. Identification of Intracellular and Extracellular Metabolites in Cancer Cells Using 13C Hyperpolarized Ultrafast Laplace NMR. Anal Chem 2018; 90:11131-11137. [PMID: 30125087 PMCID: PMC6168181 DOI: 10.1021/acs.analchem.8b03096] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
![]()
Ultrafast
Laplace NMR (UF-LNMR), which is based on the spatial
encoding of multidimensional data, enables one to carry out 2D relaxation
and diffusion measurements in a single scan. Besides reducing the
experiment time to a fraction, it significantly facilitates the use
of nuclear spin hyperpolarization to boost experimental sensitivity,
because the time-consuming polarization step does not need to be repeated.
Here we demonstrate the usability of hyperpolarized UF-LNMR in the
context of cell metabolism, by investigating the conversion of pyruvate
to lactate in the cultures of mouse 4T1 cancer cells. We show that 13C ultrafast diffusion–T2 relaxation correlation measurements, with the sensitivity enhanced
by several orders of magnitude by dissolution dynamic nuclear polarization
(D-DNP), allows the determination of the extra- vs intracellular
location of metabolites because of their significantly different values
of diffusion coefficients and T2 relaxation
times. Under the current conditions, pyruvate was located predominantly
in the extracellular pool, while lactate remained primarily intracellular.
Contrary to the small flip angle diffusion methods reported in the
literature, the UF-LNMR method does not require several scans with
varying gradient strength, and it provides a combined diffusion and T2 contrast. Furthermore, the ultrafast concept
can be extended to various other multidimensional LNMR experiments,
which will provide detailed information about the dynamics and exchange
processes of cell metabolites.
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Affiliation(s)
- Guannan Zhang
- Department of Chemistry , Texas A&M University , 3255 TAMU, College Station , Texas 77843 , United States
| | - Susanna Ahola
- NMR Research Unit, Faculty of Science , University of Oulu , P.O. Box 3000, 90014 Oulu , Finland
| | - Mathilde H Lerche
- Department of Electrical Engineering, Center for Hyperpolarization in Magnetic Resonance , Technical University of Denmark , Building 349, DK-2800 Kgs Lyngby , Denmark
| | - Ville-Veikko Telkki
- NMR Research Unit, Faculty of Science , University of Oulu , P.O. Box 3000, 90014 Oulu , Finland
| | - Christian Hilty
- Department of Chemistry , Texas A&M University , 3255 TAMU, College Station , Texas 77843 , United States
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10
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Sriram R, Gordon J, Baligand C, Ahamed F, Delos Santos J, Qin H, Bok RA, Vigneron DB, Kurhanewicz J, Larson PEZ, Wang ZJ. Non-Invasive Assessment of Lactate Production and Compartmentalization in Renal Cell Carcinomas Using Hyperpolarized 13C Pyruvate MRI. Cancers (Basel) 2018; 10:cancers10090313. [PMID: 30189677 PMCID: PMC6162434 DOI: 10.3390/cancers10090313] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 08/31/2018] [Accepted: 09/03/2018] [Indexed: 01/15/2023] Open
Abstract
Optimal treatment selection for localized renal tumors is challenging due to their variable biological behavior and limited ability to pre-operatively assess their aggressiveness. We investigated hyperpolarized (HP) 13C pyruvate MRI to noninvasively assess tumor lactate production and compartmentalization, which are strongly associated with renal tumor aggressiveness. Orthotopic tumors were created in mice using human renal cell carcinoma (RCC) lines (A498, 786-O, UOK262) with varying expression of lactate dehydrogenase A (LDHA) which catalyzes the pyruvate-to-lactate conversion, and varying expression of monocarboxylate transporter 4 (MCT4) which mediates lactate export out of the cells. Dynamic HP 13C pyruvate MRI showed that the A498 tumors had significantly higher 13C pyruvate-to-lactate conversion than the UOK262 and 786-O tumors, corresponding to higher A498 tumor LDHA expression. Additionally, diffusion-weighted HP 13C pyruvate MRI showed that the A498 tumors had significantly higher 13C lactate apparent diffusion coefficients compared to 786-O tumors, with corresponding higher MCT4 expression, which likely reflects more rapid lactate export in the A498 tumors. Our data demonstrate the feasibility of HP 13C pyruvate MRI to inform on tumor lactate production and compartmentalization, and provide the scientific premise for future clinical investigation into the utility of this technique to noninvasively interrogate renal tumor aggressiveness and to guide treatment selection.
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Affiliation(s)
- Renuka Sriram
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - Jeremy Gordon
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - Celine Baligand
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - Fayyaz Ahamed
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - Justin Delos Santos
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - Hecong Qin
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - Robert A Bok
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - Daniel B Vigneron
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - Peder E Z Larson
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
| | - Zhen J Wang
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA.
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11
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Imaging glutathione depletion in the rat brain using ascorbate-derived hyperpolarized MR and PET probes. Sci Rep 2018; 8:7928. [PMID: 29786697 PMCID: PMC5962598 DOI: 10.1038/s41598-018-26296-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/09/2018] [Indexed: 01/04/2023] Open
Abstract
Oxidative stress is a critical feature of several common neurologic disorders. The brain is well adapted to neutralize oxidative injury by maintaining a high steady-state concentration of small-molecule intracellular antioxidants including glutathione in astrocytes and ascorbic acid in neurons. Ascorbate-derived imaging probes for hyperpolarized 13C magnetic resonance spectroscopy and positron emission tomography have been used to study redox changes (antioxidant depletion and reactive oxygen species accumulation) in vivo. In this study, we applied these imaging probes to the normal rat brain and a rat model of glutathione depletion. We first studied hyperpolarized [1-13C]dehydroascorbate in the normal rat brain, demonstrating its robust conversion to [1-13C]vitamin C, consistent with rapid transport of the oxidized form across the blood-brain barrier. We next showed that the kinetic rate of this conversion decreased by nearly 50% after glutathione depletion by diethyl maleate treatment. Finally, we showed that dehydroascorbate labeled for positron emission tomography, namely [1-11C]dehydroascorbate, showed no change in brain signal accumulation after diethyl maleate treatment. These results suggest that hyperpolarized [1-13C]dehydroascorbate may be used to non-invasively detect oxidative stress in common disorders of the brain.
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12
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Marco-Rius I, Gordon JW, Mattis AN, Bok R, Santos RD, Sukumar S, Larson PE, Vigneron DB, Ohliger MA. Diffusion-weighted imaging of hyperpolarized [ 13 C]urea in mouse liver. J Magn Reson Imaging 2018; 47:141-151. [PMID: 28419644 PMCID: PMC5645231 DOI: 10.1002/jmri.25721] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 03/16/2017] [Indexed: 12/20/2022] Open
Abstract
PURPOSE To compare the apparent diffusion coefficient (ADC) of hyperpolarized (HP) [13 C,15 N]urea to the ADC of endogenous water in healthy and fibrotic mouse liver. MATERIALS AND METHODS ADC measurements for water and [13 C]urea were made in agarose phantoms at 14.1T. Next, the ADC of water and injected HP [13 C,15 N]urea were measured in eight CD1 mouse livers before and after induction of liver fibrosis using CCl4 . Liver fibrosis was quantified pathologically using the modified Brunt fibrosis score and compared to the measured ADC of water and urea. RESULTS In cell-free phantoms with 12.5% agarose, water ADC was nearly twice the ADC of urea (1.93 × 10-3 mm2 /s vs. 1.00 × 10-3 mm2 /s). The mean ADC values of water and [13 C,15 N]urea in healthy mouse liver (±SD) were nearly identical [(0.75 ± 0.11) × 10-3 mm2 /s and (0.75 ± 0.22) × 10-3 mm2 /s, respectively]. Mean water and [13 C,15 N]urea ADC values in fibrotic liver (±SD) were (0.84 ± 0.22) × 10-3 mm2 /s and (0.75 ± 0.15) × 10-3 mm2 /s, respectively. Neither water nor urea ADCs were statistically different in the fibrotic livers compared to baseline (P = 0.14 and P = 0.99, respectively). Water and urea ADCs were positively correlated at baseline (R2 = 0.52 and P = 0.045) but not in fibrotic livers (R2 = 0.23 and P = 0.23). CONCLUSION ADC of injected hyperpolarized urea in healthy liver reflects a smaller change as compared to free solution than ADC of water. This may reflect differences in cellular compartmentalization of the two compounds. No significant change in ADC of either water or urea were observed in relatively mild stages of liver fibrosis. LEVEL OF EVIDENCE 1 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2018;47:141-151.
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Affiliation(s)
- Irene Marco-Rius
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Jeremy W. Gordon
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Aras N. Mattis
- Department of Pathology, University of California San Francisco, San Francisco, California, USA
- UCSF Liver Center University of California San Francisco, San Francisco, California, USA
| | - Robert Bok
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Romelyn Delos Santos
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Subramanian Sukumar
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Peder E.Z. Larson
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Daniel B. Vigneron
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
- UCSF Liver Center University of California San Francisco, San Francisco, California, USA
| | - Michael A. Ohliger
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
- UCSF Liver Center University of California San Francisco, San Francisco, California, USA
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13
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Feuerecker B, Durst M, Michalik M, Schneider G, Saur D, Menzel M, Schwaiger M, Schilling F. Hyperpolarized 13C Diffusion MRS of Co-Polarized Pyruvate and Fumarate to Measure Lactate Export and Necrosis. J Cancer 2017; 8:3078-3085. [PMID: 28928899 PMCID: PMC5604459 DOI: 10.7150/jca.20250] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 06/04/2017] [Indexed: 02/06/2023] Open
Abstract
Background: Non-invasive tumor characterization and monitoring are among the key goals of medical imaging. Using hyperpolarized 13C-labelled metabolic probes fast metabolic pathways can be probed in real-time, providing new opportunities for tumor characterization. In this in vitro study, we investigated whether measurement of apparent diffusion coefficient (ADC) measurements and magnetic resonance spectroscopy (MRS) of co-polarized 13C-labeled pyruvic acid and fumaric acid can non-invasively detect both necrosis and changes in lactate export, which are parameters indicative of tumor aggressiveness. Methods:13C-labeled pyruvic acid and fumaric acid were co-polarized in a preclinical hyperpolarizer and the dissolved compounds were added to prepared samples of 8932 pancreatic cancer and MCF-7 breast carcinoma cells. Extracellular lactate concentrations and cell viability were measured in separate assays. Results: The mean ratios of the ADC values of lactate and pyruvate (ADClac/ADCpyr) between MCF-7 (0.533 ± 0.015, n = 3) and 8932 pancreatic cancer cells (0.744 ± 0.064, n = 3) showed a statistically significant difference (p = 0.048). 8932 cells had higher extracellular lactate concentrations in the extracellular medium (22.97 ± 2.53 ng/µl) compared with MCF-7 cells (7.52 ± 0.59 ng/µl; p < 0.001). Fumarate-to-malate conversion was only detectable in necrotic cells, thereby allowing clear differentiation between necrotic and viable cells. Conclusion: We provide evidence that MRS of hyperpolarized 13C-labelled pyruvic acid and fumaric acid, with their respective conversions to lactate and malate, are useful for characterization of necrosis and lactate efflux in tumor cells.
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Affiliation(s)
- Benedikt Feuerecker
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.,German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Markus Durst
- Institute of Medical Engineering, Technische Universität München, Garching, Germany.,GE Global Research, Munich, Germany
| | - Michael Michalik
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Günter Schneider
- Department of Internal Medicine II, Klinikum rechts der Isar, Technische Universität München, Garching, Germany
| | - Dieter Saur
- Department of Internal Medicine II, Klinikum rechts der Isar, Technische Universität München, Garching, Germany.,German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Markus Schwaiger
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Franz Schilling
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
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14
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McCormick J, Grunfeld AM, Ertas YN, Biswas AN, Marsh KL, Wagner S, Glöggler S, Bouchard LS. Aqueous Ligand-Stabilized Palladium Nanoparticle Catalysts for Parahydrogen-Induced 13C Hyperpolarization. Anal Chem 2017; 89:7190-7194. [DOI: 10.1021/acs.analchem.7b01363] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jeffrey McCormick
- Department
of Chemistry and Biochemistry, University of California at Los Angeles, 607 Charles E Young Drive East, Los Angeles, California 90095-1569, United States
- The
Molecular Biology Institute, Jonsson Comprehensive Cancer Center,
California NanoSystems Institute (CNSI), University of California Los Angeles, Los Angeles, California 90095, United States
| | - Alexander M. Grunfeld
- Department
of Chemistry and Biochemistry, University of California at Los Angeles, 607 Charles E Young Drive East, Los Angeles, California 90095-1569, United States
| | - Yavuz N. Ertas
- The
Molecular Biology Institute, Jonsson Comprehensive Cancer Center,
California NanoSystems Institute (CNSI), University of California Los Angeles, Los Angeles, California 90095, United States
- Department
of Bioengineering, University of California at Los Angeles, 420 Westwood
Plaza, Los Angeles, California 90095, United States
| | - Akash N. Biswas
- Department
of Chemistry and Biochemistry, University of California at Los Angeles, 607 Charles E Young Drive East, Los Angeles, California 90095-1569, United States
| | - Kristofer L. Marsh
- Department
of Chemistry and Biochemistry, University of California at Los Angeles, 607 Charles E Young Drive East, Los Angeles, California 90095-1569, United States
| | - Shawn Wagner
- Biomedical
Imaging Research Institute, Cedars Sinai Medical Center, 8700
Beverly Boulevard, Davis Building G149E, Los
Angeles, California 90048, United States
| | - Stefan Glöggler
- Department
of Chemistry and Biochemistry, University of California at Los Angeles, 607 Charles E Young Drive East, Los Angeles, California 90095-1569, United States
- Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, D-37077 Göttingen, Germany
- Center for Biostructural Imaging of Neurodegeneration, Von-Siebold-Straße 3A, D-37075 Göttingen, Germany
| | - Louis-S. Bouchard
- Department
of Chemistry and Biochemistry, University of California at Los Angeles, 607 Charles E Young Drive East, Los Angeles, California 90095-1569, United States
- The
Molecular Biology Institute, Jonsson Comprehensive Cancer Center,
California NanoSystems Institute (CNSI), University of California Los Angeles, Los Angeles, California 90095, United States
- Department
of Bioengineering, University of California at Los Angeles, 420 Westwood
Plaza, Los Angeles, California 90095, United States
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15
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Adamson EB, Ludwig KD, Mummy DG, Fain SB. Magnetic resonance imaging with hyperpolarized agents: methods and applications. Phys Med Biol 2017; 62:R81-R123. [PMID: 28384123 DOI: 10.1088/1361-6560/aa6be8] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In the past decade, hyperpolarized (HP) contrast agents have been under active development for MRI applications to address the twin challenges of functional and quantitative imaging. Both HP helium (3He) and xenon (129Xe) gases have reached the stage where they are under study in clinical research. HP 129Xe, in particular, is poised for larger scale clinical research to investigate asthma, chronic obstructive pulmonary disease, and fibrotic lung diseases. With advances in polarizer technology and unique capabilities for imaging of 129Xe gas exchange into lung tissue and blood, HP 129Xe MRI is attracting new attention. In parallel, HP 13C and 15N MRI methods have steadily advanced in a wide range of pre-clinical research applications for imaging metabolism in various cancers and cardiac disease. The HP [1-13C] pyruvate MRI technique, in particular, has undergone phase I trials in prostate cancer and is poised for investigational new drug trials at multiple institutions in cancer and cardiac applications. This review treats the methodology behind both HP gases and HP 13C and 15N liquid state agents. Gas and liquid phase HP agents share similar technologies for achieving non-equilibrium polarization outside the field of the MRI scanner, strategies for image data acquisition, and translational challenges in moving from pre-clinical to clinical research. To cover the wide array of methods and applications, this review is organized by numerical section into (1) a brief introduction, (2) the physical and biological properties of the most common polarized agents with a brief summary of applications and methods of polarization, (3) methods for image acquisition and reconstruction specific to improving data acquisition efficiency for HP MRI, (4) the main physical properties that enable unique measures of physiology or metabolic pathways, followed by a more detailed review of the literature describing the use of HP agents to study: (5) metabolic pathways in cancer and cardiac disease and (6) lung function in both pre-clinical and clinical research studies, concluding with (7) some future directions and challenges, and (8) an overall summary.
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Affiliation(s)
- Erin B Adamson
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, United States of America
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16
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Cao P, Wu EX. In vivo diffusion MRS investigation of non-water molecules in biological tissues. NMR IN BIOMEDICINE 2017; 30:e3481. [PMID: 26797798 DOI: 10.1002/nbm.3481] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 11/19/2015] [Accepted: 12/04/2015] [Indexed: 06/05/2023]
Abstract
Diffusion MRS of non-water molecules offers great potential in directly revealing various tissue microstructures and physiology at both cellular and subcellular levels. In brain, 1 H diffusion MRS has been demonstrated as a new tool for probing normal tissue microstructures and their pathological changes. In skeletal muscle, 1 H diffusion MRS could characterize slow and restricted intramyocellular lipid diffusion, providing a sensitive marker for metabolic alterations, while 31 P diffusion MRS can measure ATP and PCr diffusion, which may reflect the capacity of cellular energy transport, complementing the information from frequently used 31 P MRS in muscle. In intervertebral disk, 1 H diffusion MRS can directly monitor extracellular matrix integrity by quantifying the mobility of macromolecules such as proteoglycans and collagens. In tumor tissue, 13 C diffusion MRS could probe intracellular glycolytic metabolism, while 1 H diffusion MRS may separate the spectrally overlapped lactate and lipid resonances. In this review, recent diffusion MRS studies of these biologically relevant non-water molecules under normal and diseased conditions will be presented. Technical considerations for diffusion MRS experiments will be discussed. With advances in MRI hardware and diffusion methodology, diffusion MRS of non-water molecules is expected to provide increasingly valuable and biologically specific information on tissue microstructures and physiology, complementing the traditional diffusion MRI of small and ubiquitous water molecules. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Peng Cao
- Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, CA, USA
| | - Ed X Wu
- Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Pokfulam, Hong Kong, China
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China
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17
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Gordon JW, Milshteyn E, Marco-Rius I, Ohliger M, Vigneron DB, Larson PEZ. Mis-estimation and bias of hyperpolarized apparent diffusion coefficient measurements due to slice profile effects. Magn Reson Med 2016; 78:1087-1092. [PMID: 27735082 DOI: 10.1002/mrm.26482] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 07/18/2016] [Accepted: 09/03/2016] [Indexed: 12/16/2022]
Abstract
PURPOSE The purpose of this work was to explore the impact of slice profile effects on apparent diffusion coefficient (ADC) mapping of hyperpolarized (HP) substrates. METHODS Slice profile effects were simulated using a Gaussian radiofrequency (RF) pulse with a variety of flip angle schedules and b-value ordering schemes. A long T1 water phantom was used to validate the simulation results, and ADC mapping of HP [13 C,15 N2 ]urea was performed on the murine liver to assess these effects in vivo. RESULTS Slice profile effects result in excess signal after repeated RF pulses, causing bias in HP measurements. The largest error occurs for metabolites with small ADCs, resulting in up to 10-fold overestimation for metabolites that are in more-restricted environments. A mixed b-value scheme substantially reduces this bias, whereas scaling the slice-select gradient can mitigate it completely. In vivo, the liver ADC of hyperpolarized [13 C,15 N2 ]urea is nearly 70% lower (0.99 ± 0.22 vs 1.69 ± 0.21 × 10-3 mm2 /s) when slice-select gradient scaling is used. CONCLUSION Slice profile effects can lead to bias in HP ADC measurements. A mixed b-value ordering scheme can reduce this bias compared to sequential b-value ordering. Slice-select gradient scaling can also correct for this deviation, minimizing bias and providing more-precise ADC measurements of HP substrates. Magn Reson Med 78:1087-1092, 2017. © 2016 International Society for Magnetic Resonance in Medicine.
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Affiliation(s)
- Jeremy W Gordon
- Department of Radiology & Biomedical Imaging, UCSF, San Francisco, California, USA
| | - Eugene Milshteyn
- Department of Radiology & Biomedical Imaging, UCSF, San Francisco, California, USA
| | - Irene Marco-Rius
- Department of Radiology & Biomedical Imaging, UCSF, San Francisco, California, USA
| | - Michael Ohliger
- Department of Radiology & Biomedical Imaging, UCSF, San Francisco, California, USA
| | - Daniel B Vigneron
- Department of Radiology & Biomedical Imaging, UCSF, San Francisco, California, USA
| | - Peder E Z Larson
- Department of Radiology & Biomedical Imaging, UCSF, San Francisco, California, USA
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18
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Hyperpolarized MRS: New tool to study real-time brain function and metabolism. Anal Biochem 2016; 529:270-277. [PMID: 27665679 DOI: 10.1016/j.ab.2016.09.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 08/31/2016] [Accepted: 09/21/2016] [Indexed: 11/23/2022]
Abstract
The advent of dissolution dynamic nuclear polarization (DNP) led to the emergence of a new kind of magnetic resonance (MR) measurements providing the opportunity to probe metabolism in vivo in real time. It has been shown that, following the injection of hyperpolarized substrates prepared using dissolution DNP, specific metabolic bioprobes that can be used to differentiate between healthy and pathological tissue in preclinical and clinical studies can be readily detected by MR thanks to the tremendous signal enhancement. The present article aims at reviewing the studies of cerebral function and metabolism based on the use of hyperpolarized MR. The constraints and future opportunities that this technology could offer are discussed.
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19
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Koelsch BL, Sriram R, Keshari KR, Leon Swisher C, Van Criekinge M, Sukumar S, Vigneron DB, Wang ZJ, Larson PEZ, Kurhanewicz J. Separation of extra- and intracellular metabolites using hyperpolarized (13)C diffusion weighted MR. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2016; 270:115-123. [PMID: 27434780 PMCID: PMC5448422 DOI: 10.1016/j.jmr.2016.07.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/06/2016] [Accepted: 07/07/2016] [Indexed: 05/07/2023]
Abstract
This work demonstrates the separation of extra- and intracellular components of glycolytic metabolites with diffusion weighted hyperpolarized (13)C magnetic resonance spectroscopy. Using b-values of up to 15,000smm(-2), a multi-exponential signal response was measured for hyperpolarized [1-(13)C] pyruvate and lactate. By fitting the fast and slow asymptotes of these curves, their extra- and intracellular weighted diffusion coefficients were determined in cells perfused in a MR compatible bioreactor. In addition to measuring intracellular weighted diffusion, extra- and intracellular weighted hyperpolarized (13)C metabolites pools are assessed in real-time, including their modulation with inhibition of monocarboxylate transporters. These studies demonstrate the ability to simultaneously assess membrane transport in addition to enzymatic activity with the use of diffusion weighted hyperpolarized (13)C MR. This technique could be an indispensible tool to evaluate the impact of microenvironment on the presence, aggressiveness and metastatic potential of a variety of cancers.
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Affiliation(s)
- Bertram L Koelsch
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, CA, USA
| | - Renuka Sriram
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.
| | - Kayvan R Keshari
- Radiology and Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Weill Cornell Medical College, New York, NY, USA
| | - Christine Leon Swisher
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, CA, USA
| | - Mark Van Criekinge
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Subramaniam Sukumar
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Daniel B Vigneron
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, CA, USA
| | - Zhen J Wang
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Peder E Z Larson
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, CA, USA
| | - John Kurhanewicz
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, Berkeley and University of California, San Francisco, CA, USA
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20
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Durst M, Koellisch U, Daniele V, Steiger K, Schwaiger M, Haase A, Menzel MI, Schulte RF, Aime S, Reineri F. Probing lactate secretion in tumours with hyperpolarised NMR. NMR IN BIOMEDICINE 2016; 29:1079-1087. [PMID: 27348729 DOI: 10.1002/nbm.3574] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 05/18/2016] [Accepted: 05/19/2016] [Indexed: 06/06/2023]
Abstract
Most tumours exhibit a high rate of glycolysis and predominantly produce energy by lactic acid fermentation. To maintain energy production and prevent toxicity, the lactate generated needs to be rapidly transported out of the cell. This is achieved by monocarboxylate transporters (MCTs), which therefore play an essential role in cancer metabolism and development. In vivo experiments were performed on eight male Fisher F344 rats bearing a subcutaneous mammary carcinoma after injection of hyperpolarised [1-(13) C]pyruvate. A Gd(III)DO3A complex that binds to pyruvate and its metabolites was used to efficiently destroy the extracellular magnetisation after hyperpolarised lactate had been formed. Moreover, a pulse sequence including a frequency-selective saturation pulse was designed so that the pyruvate magnetisation could be destroyed to exclude effects arising from further conversion. Given this preparation, metabolite transport out of the cell manifested as additional decay and apparent cell membrane transporter rates could thus be obtained using a reference measurement without a relaxation agent. In addition to slice-selective spectra, spatially resolved maps of apparent membrane transporter activity were acquired using a single-shot spiral gradient readout. A considerable increase in decay rate was detected for lactate, indicating rapid transport out of the cell. The alanine signal was unaltered, which corresponds to a slower efflux rate. This technique could allow for better understanding of tumour metabolism and progression, and enable treatment response measurements for MCT-targeted cancer therapies. Moreover, it provides vital insights into the signal kinetics of hyperpolarised [1-(13) C]pyruvate examinations. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Markus Durst
- IMETUM, Technische Universität München, Garching, Germany
- GE Global Research, Garching, Germany
| | - Ulrich Koellisch
- IMETUM, Technische Universität München, Garching, Germany
- GE Global Research, Garching, Germany
| | | | | | - Markus Schwaiger
- Nuklearmedizinische Klinik und Poliklinik,Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Axel Haase
- IMETUM, Technische Universität München, Garching, Germany
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21
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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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22
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Reed GD, von Morze C, Verkman AS, Koelsch BL, Chaumeil MM, Lustig M, Ronen SM, Bok RA, Sands JM, Larson PEZ, Wang ZJ, Larsen JHA, Kurhanewicz J, Vigneron DB. Imaging Renal Urea Handling in Rats at Millimeter Resolution using Hyperpolarized Magnetic Resonance Relaxometry. ACTA ACUST UNITED AC 2016; 2:125-135. [PMID: 27570835 PMCID: PMC4996281 DOI: 10.18383/j.tom.2016.00127] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In vivo spin spin relaxation time (T2) heterogeneity of hyperpolarized [13C,15N2]urea in the rat kidney was investigated. Selective quenching of the vascular hyperpolarized 13C signal with a macromolecular relaxation agent revealed that a long-T2 component of the [13C,15N2]urea signal originated from the renal extravascular space, thus allowing the vascular and renal filtrate contrast agent pools of the [13C,15N2]urea to be distinguished via multi-exponential analysis. The T2 response to induced diuresis and antidiuresis was performed with two imaging agents: hyperpolarized [13C,15N2]urea and a control agent hyperpolarized bis-1,1-(hydroxymethyl)-1-13C-cyclopropane-2H8. Large T2 increases in the inner-medullar and papilla were observed with the former agent and not the latter during antidiuresis. Therefore, [13C,15N2]urea relaxometry is sensitive to two steps of the renal urea handling process: glomerular filtration and the inner-medullary urea transporter (UT)-A1 and UT-A3 mediated urea concentrating process. Simple motion correction and subspace denoising algorithms are presented to aid in the multi exponential data analysis. Furthermore, a T2-edited, ultra long echo time sequence was developed for sub-2 mm3 resolution 3D encoding of urea by exploiting relaxation differences in the vascular and filtrate pools.
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Affiliation(s)
- Galen D Reed
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Cornelius von Morze
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Alan S Verkman
- Departments of Medicine and Physiology, University of California San Francisco, San Francisco, California, USA
| | - Bertram L Koelsch
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Myriam M Chaumeil
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Michael Lustig
- Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA; Department of Electrical Engineering and Computer Sciences, University of California Berkeley, Berkeley, California, USA
| | - Sabrina M Ronen
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Robert A Bok
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Jeff M Sands
- Department of Medicine, Renal Division, Emory University, Atlanta, Georgia, USA
| | - Peder E Z Larson
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Zhen J Wang
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Jan Henrik Ardenkjær Larsen
- GE Healthcare, Brøndby, Denmark; Department of Electrical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Daniel B Vigneron
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
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23
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Reed GD, von Morze C, Verkman AS, Koelsch BL, Chaumeil MM, Lustig M, Ronen SM, Bok RA, Sands JM, Larson PEZ, Wang ZJ, Larsen JHA, Kurhanewicz J, Vigneron DB. Imaging Renal Urea Handling in Rats at Millimeter Resolution using Hyperpolarized Magnetic Resonance Relaxometry. Tomography 2016. [PMID: 27570835 DOI: 10.18383/j.tom2016.00127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/24/2023] Open
Abstract
In vivo spin spin relaxation time (T2) heterogeneity of hyperpolarized [13C,15N2]urea in the rat kidney was investigated. Selective quenching of the vascular hyperpolarized 13C signal with a macromolecular relaxation agent revealed that a long-T2 component of the [13C,15N2]urea signal originated from the renal extravascular space, thus allowing the vascular and renal filtrate contrast agent pools of the [13C,15N2]urea to be distinguished via multi-exponential analysis. The T2 response to induced diuresis and antidiuresis was performed with two imaging agents: hyperpolarized [13C,15N2]urea and a control agent hyperpolarized bis-1,1-(hydroxymethyl)-1-13C-cyclopropane-2H8. Large T2 increases in the inner-medullar and papilla were observed with the former agent and not the latter during antidiuresis. Therefore, [13C,15N2]urea relaxometry is sensitive to two steps of the renal urea handling process: glomerular filtration and the inner-medullary urea transporter (UT)-A1 and UT-A3 mediated urea concentrating process. Simple motion correction and subspace denoising algorithms are presented to aid in the multi exponential data analysis. Furthermore, a T2-edited, ultra long echo time sequence was developed for sub-2 mm3 resolution 3D encoding of urea by exploiting relaxation differences in the vascular and filtrate pools.
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Affiliation(s)
- Galen D Reed
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Cornelius von Morze
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Alan S Verkman
- Departments of Medicine and Physiology, University of California San Francisco, San Francisco, California, USA
| | - Bertram L Koelsch
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Myriam M Chaumeil
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Michael Lustig
- Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA; Department of Electrical Engineering and Computer Sciences, University of California Berkeley, Berkeley, California, USA
| | - Sabrina M Ronen
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Robert A Bok
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Jeff M Sands
- Department of Medicine, Renal Division, Emory University, Atlanta, Georgia, USA
| | - Peder E Z Larson
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Zhen J Wang
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA
| | - Jan Henrik Ardenkjær Larsen
- GE Healthcare, Brøndby, Denmark; Department of Electrical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
| | - Daniel B Vigneron
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, USA; Graduate Group in Bioengineering University of California San Francisco, San Francisco, California, USA, and University of California Berkeley, Berkeley, California, USA
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24
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Sriram R, Van Criekinge M, DeLos Santos J, Keshari KR, Wilson DM, Peehl D, Kurhanewicz J, Wang ZJ. Non-invasive differentiation of benign renal tumors from clear cell renal cell carcinomas using clinically translatable hyperpolarized 13C pyruvate magnetic resonance. Tomography 2016; 2:35-42. [PMID: 27227168 PMCID: PMC4876723 DOI: 10.18383/j.tom.2016.00106] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Localized renal tumors are increasingly detected incidentally at imaging. Conventional imaging cannot reliably differentiate the 20% of these tumors that are benign from malignant renal cell carcinomas (RCCs), leading to unnecessary surgical resection and resulting morbidity associated with surgery. Here, we investigated hyperpolarized 13C pyruvate metabolism in live patient-derived renal tumor tissue slices using a novel magnetic resonance (MR) -compatible bioreactor platform. We demonstrated for the first time that clear cell RCCs (ccRCCs), which account for 70-80% of all RCCs, have increased lactate production as well as rapid lactate efflux compared to benign renal tumors. This difference is attributed to increased lactate dehydrogenase A and monocarboxylate transporter 4 expression in ccRCCs. This distinctive metabolic phenotype can be used to differentiate RCCs from benign renal tumors using clinically translatable hyperpolarized 13C pyruvate MR.
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Affiliation(s)
- Renuka Sriram
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
| | - Mark Van Criekinge
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
| | - Justin DeLos Santos
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
| | - Kayvan R Keshari
- Radiology and Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - David M Wilson
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
| | - Donna Peehl
- Department of Urology, Stanford University, Stanford, CA, United States
| | - John Kurhanewicz
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
| | - Zhen J Wang
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
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25
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Sriram R, Van Criekinge M, Hansen A, Wang ZJ, Vigneron DB, Wilson DM, Keshari KR, Kurhanewicz J. Real-time measurement of hyperpolarized lactate production and efflux as a biomarker of tumor aggressiveness in an MR compatible 3D cell culture bioreactor. NMR IN BIOMEDICINE 2015; 28:1141-1149. [PMID: 26202449 PMCID: PMC4537810 DOI: 10.1002/nbm.3354] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 05/28/2015] [Accepted: 06/05/2015] [Indexed: 05/19/2023]
Abstract
We have developed a 3D cell/tissue culture bioreactor compatible with hyperpolarized (HP) (13)C MR and interrogated HP [1-(13)C]lactate production and efflux in human renal cell carcinoma (RCC) cells. This platform is capable of resolving intracellular and extracellular HP lactate pools, allowing the kinetic measurement of lactate production and efflux in the context of cancer aggressiveness and response to therapy. HP (13)C MR studies were performed on three immortalized human renal cell lines: HK2, a normal renal proximal tubule cell line from which a majority of RCCs arise, UMRC6, a cell line derived from a localized RCC, and UOK262, an aggressive and metastatic RCC. The intra- (Lacin ) and extracellular (Lacex ) HP lactate signals were robustly resolved in dynamic (13)C spectra of the cell lines due to a very small but reproducible chemical shift difference (0.031 ± 0.0005 ppm). Following HP [1-(13)C]pyruvate delivery, the ratio of HP Lacin /Lacex was significantly lower for UOK262 cells compared with both UMRC6 and HK2 cells due to a significant (p < 0.05) increase in the Lacex pool size. Lacin /Lacex correlated with the MCT4 mRNA expression of the cell lines, and inhibition of MCT4 transport using DIDS resulted in a significant reduction in the HP Lacex pool size. The extension of these studies to living patient-derived RCC tissue slices using HP [1,2-(13)C2]pyruvate demonstrated a similarly split lactate doublet with a high Lacex pool fraction; in contrast, only a single NMR resonance is noted for HP [5-(13)C]glutamate, consistent with intracellular localization. These studies support the importance of lactate efflux as a biomarker of cancer aggressiveness and metastatic potential, and the utility of the MR compatible 3D cell/tissue culture bioreactor to study not only cellular metabolism but also transport. Additionally, this platform offers a sophisticated way to follow therapeutic interventions and screen novel therapies that target lactate export.
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Affiliation(s)
- Renuka Sriram
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
- Correspondence and Reprint Request: Renuka Sriram, University of California, San Francisco, Byers Hall, Room 201B, 1700 4th Street, MC 2520, San Francisco, CA 94158, Tel: (415) 514-4874, Fax: (415) 514-4714,
| | - Mark Van Criekinge
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
| | - Ailin Hansen
- Norwegian University of Science and Technology, Trondheim, Norway
| | - Zhen J. Wang
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
| | - Daniel B. Vigneron
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
| | - David M. Wilson
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
| | - Kayvan R. Keshari
- Radiology and Molecular Pharmacology and Chemistry Program, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - John Kurhanewicz
- Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
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26
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Lau AZ, Miller JJ, Robson MD, Tyler DJ. Cardiac perfusion imaging using hyperpolarized (13)C urea using flow sensitizing gradients. Magn Reson Med 2015; 75:1474-83. [PMID: 25991580 PMCID: PMC4556069 DOI: 10.1002/mrm.25713] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 02/25/2015] [Accepted: 03/05/2015] [Indexed: 01/18/2023]
Abstract
Purpose To demonstrate the feasibility of imaging the first passage of a bolus of hyperpolarized 13C urea through the rodent heart using flow‐sensitizing gradients to reduce signal from the blood pool. Methods A flow‐sensitizing bipolar gradient was optimized to reduce the bright signal within the cardiac chambers, enabling improved contrast of the agent within the tissue capillary bed. The gradient was incorporated into a dynamic golden angle spiral 13C imaging sequence. Healthy rats were scanned during rest (n = 3) and under adenosine stress‐induced hyperemia (n = 3). Results A two‐fold increase in myocardial perfusion relative to rest was detected during adenosine stress‐induced hyperemia, consistent with a myocardial perfusion reserve of two in rodents. Conclusion The new pulse sequence was used to obtain dynamic images of the first passage of hyperpolarized 13C urea in the rodent heart, without contamination from bright signal within the neighboring cardiac lumen. This probe of myocardial perfusion is expected to enable new hyperpolarized 13C studies in which the cardiac metabolism/perfusion mismatch can be identified. Magn Reson Med, 2015. © 2015 The Authors. Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. Magn Reson Med 75:1474–1483, 2016. © 2015 The Authors. Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance.
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Affiliation(s)
- Angus Z Lau
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, United Kingdom.,Department of Physiology, Anatomy and Genetics, University of Oxford, United Kingdom
| | - Jack J Miller
- Department of Physiology, Anatomy and Genetics, University of Oxford, United Kingdom.,Department of Physics, Clarendon Laboratory, University of Oxford, United Kingdom
| | - Matthew D Robson
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, United Kingdom
| | - Damian J Tyler
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, United Kingdom.,Department of Physiology, Anatomy and Genetics, University of Oxford, United Kingdom
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