1
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Drescher R, Gröber S, Freesmeyer M, Greiser J. Preparation and labelling of red blood cells with [ 68Ga]Ga-oxine for PET/CT imaging of the human spleen. Nucl Med Biol 2023; 118-119:108333. [PMID: 36940567 DOI: 10.1016/j.nucmedbio.2023.108333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 02/01/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023]
Abstract
INTRODUCTION With the introduction of automated synthetization methods, the in-house production of several 68Ga-based tracers became feasible in hospital laboratories. We describe a possible standard operating procedure (SOP) for [68Ga]Ga-oxine-labeled heat-denaturated erythrocytes, which can be used for selective imaging in patients with splenic disorders. METHODS Heat-denaturated erythrocytes were labeled with [68Ga]Ga-oxine, which was produced from 68Ga and 8-hydroxyquinoline on an automated synthesizer. The workflow was validated in a good manufacturing/good radiopharmaceutical practice (GMP/GRP) certified laboratory. A patient underwent [68Ga]Ga-oxine-erythrocyte PET/CT for differentiation of an intrapancreatic mass. RESULTS [68Ga]Ga-oxine and [68Ga]Ga-oxine-labeled erythrocytes could be synthesized reproducibly and reliably. The products met GMP quality standards. The tracer showed high accumulation in the intrapancreatic mass, consistent with an accessory spleen. CONCLUSIONS PET/CT imaging with [68Ga]Ga-oxine-labeled, heat-denaturated erythrocytes can be a backup method for the differentiation of functioning splenic tissue from tumors. An SOP for the production of the tracer in a clinical setting could be established.
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Affiliation(s)
- Robert Drescher
- Clinic of Nuclear Medicine, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Sebastian Gröber
- Clinic of Nuclear Medicine, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Martin Freesmeyer
- Clinic of Nuclear Medicine, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany.
| | - Julia Greiser
- Clinic of Nuclear Medicine, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany
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2
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PET/CT of the Spleen with Gallium-Oxine-Labeled, Heat-Damaged Red Blood Cells: Clinical Experience and Technical Aspects. Diagnostics (Basel) 2023; 13:diagnostics13030566. [PMID: 36766669 PMCID: PMC9913950 DOI: 10.3390/diagnostics13030566] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 01/27/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Several scintigraphic techniques have been supplemented or replaced by PET/CT methods because of their superior sensitivity, high resolution, and absolute activity quantification capability. The purpose of this project was the development of a PET tracer for splenic imaging, its radiopharmaceutical validation, and its application in selected patients in whom unclear constellations of findings could not be resolved with established imaging methods. Heat-damaged red blood cells (RBCs) were labeled with [68Ga]gallium-oxine, which was produced from [68Ga]gallium and 8-Hydroxyquinoline (oxine) on an automated synthesizer. Ten patients underwent [68Ga]gallium-oxine-RBC-PET/CT for the classification of eleven unclear lesions (3 intra-, 8 extrapancreatic). [68Ga]gallium-oxine and [68Ga]gallium-oxine-labeled RBCs could be synthesized reproducibly and reliably. The products met GMP quality standards. The tracer showed high accumulation in splenic tissue. Of the 11 lesions evaluated by PET/CT, 3 were correctly classified as non-splenic, 6 as splenic, 1 as equivocal, and 1 lesion as a splenic hypoplasia. All lesions classified as non-splenic were malignant, and all lesions classified as splenic did not show malignant features during follow-up. PET/CT imaging of the spleen with [68Ga]gallium-oxine-labeled, heat-damaged RBCs is feasible and allowed differentiation of splenic from non-splenic tissues, and the diagnosis of splenic anomalies.
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3
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Gawne P, Man F, Blower PJ, T. M. de Rosales R. Direct Cell Radiolabeling for in Vivo Cell Tracking with PET and SPECT Imaging. Chem Rev 2022; 122:10266-10318. [PMID: 35549242 PMCID: PMC9185691 DOI: 10.1021/acs.chemrev.1c00767] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Indexed: 02/07/2023]
Abstract
The arrival of cell-based therapies is a revolution in medicine. However, its safe clinical application in a rational manner depends on reliable, clinically applicable methods for determining the fate and trafficking of therapeutic cells in vivo using medical imaging techniques─known as in vivo cell tracking. Radionuclide imaging using single photon emission computed tomography (SPECT) or positron emission tomography (PET) has several advantages over other imaging modalities for cell tracking because of its high sensitivity (requiring low amounts of probe per cell for imaging) and whole-body quantitative imaging capability using clinically available scanners. For cell tracking with radionuclides, ex vivo direct cell radiolabeling, that is, radiolabeling cells before their administration, is the simplest and most robust method, allowing labeling of any cell type without the need for genetic modification. This Review covers the development and application of direct cell radiolabeling probes utilizing a variety of chemical approaches: organic and inorganic/coordination (radio)chemistry, nanomaterials, and biochemistry. We describe the key early developments and the most recent advances in the field, identifying advantages and disadvantages of the different approaches and informing future development and choice of methods for clinical and preclinical application.
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Affiliation(s)
- Peter
J. Gawne
- School
of Biomedical Engineering & Imaging Sciences, King’s College London, St Thomas’ Hospital, London, SE1 7EH, U.K.
| | - Francis Man
- School
of Biomedical Engineering & Imaging Sciences, King’s College London, St Thomas’ Hospital, London, SE1 7EH, U.K.
- Institute
of Pharmaceutical Science, School of Cancer
and Pharmaceutical Sciences, King’s College London, London, SE1 9NH, U.K.
| | - Philip J. Blower
- School
of Biomedical Engineering & Imaging Sciences, King’s College London, St Thomas’ Hospital, London, SE1 7EH, U.K.
| | - Rafael T. M. de Rosales
- School
of Biomedical Engineering & Imaging Sciences, King’s College London, St Thomas’ Hospital, London, SE1 7EH, U.K.
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4
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Wondimu ET, Zhang Q, Jin Z, Fu M, Torregrossa R, Whiteman M, Yang G, Wu L, Wang R. Effect of hydrogen sulfide on glycolysis-based energy production in mouse erythrocytes. J Cell Physiol 2021; 237:763-773. [PMID: 34346059 DOI: 10.1002/jcp.30544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/06/2021] [Accepted: 07/24/2021] [Indexed: 11/08/2022]
Abstract
Hydrogen sulfide (H2 S) is a gasotransmitter that regulates both physiological and pathophysiological processes in mammalian cells. Recent studies have demonstrated that H2 S promotes aerobic energy production in the mitochondria in response to hypoxia, but its effect on anaerobic energy production has yet to be established. Glycolysis is the anaerobic process by which ATP is produced through the metabolism of glucose. Mammalian red blood cells (RBCs) extrude mitochondria and nucleus during erythropoiesis. These cells would serve as a unique model to observe the effect of H2 S on glycolysis-mediated energy production. The purpose of this study was to determine the effect of H2 S on glycolysis-mediated energy production in mitochondria-free mouse RBCs. Western blot analysis showed that the only H2 S-generating enzyme expressed in mouse RBCs is 3-mercaptopyruvate sulfurtransferase (MST). Supplement of the substrate for MST stimulated, but the inhibition of the same suppressed, the endogenous production of H2 S. Both exogenously administered H2 S salt and MST-derived endogenous H2 S stimulated glycolysis-mediated ATP production. The effect of NaHS on ATP levels was not affected by oxygenation status. On the contrary, hypoxia increased intracellular H2 S levels and MST activity in mouse RBCs. The mitochondria-targeted H2 S donor, AP39, did not affect ATP levels of mouse RBCs. NaHS at low concentrations (3-100 μM) increased ATP levels and decreased cell viability after 3 days of incubation in vitro. Higher NaHS concentrations (300-1000 μM) lowered ATP levels, but prolonged cell viability. H2 S may offer a cytoprotective effect in mammalian RBCs to maintain oxygen-independent energy production.
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Affiliation(s)
- Eden T Wondimu
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Ontario, Canada.,Department of Biology, Laurentian University, Sudbury, Ontario, Canada
| | - Quanxi Zhang
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Ontario, Canada.,School of Life Science, Shanxi University, Taiyuan, China
| | - Zhuping Jin
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Ontario, Canada.,School of Life Science, Shanxi University, Taiyuan, China
| | - Ming Fu
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Ontario, Canada.,School of Human Kinetics, Laurentian University, Sudbury, Ontario, Canada
| | - Roberta Torregrossa
- University of Exeter Medical School, Exeter, UK.,MitoRx Therapeutics, Oxford, UK
| | - Matthew Whiteman
- University of Exeter Medical School, Exeter, UK.,MitoRx Therapeutics, Oxford, UK
| | - Guangdong Yang
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Ontario, Canada.,Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada
| | - Lingyun Wu
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Ontario, Canada.,School of Human Kinetics, Laurentian University, Sudbury, Ontario, Canada.,Health Sciences North Research Institute, Sudbury, Ontario, Canada
| | - Rui Wang
- Department of Biology, York University, Toronto, Ontario, Canada
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5
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Zhang X, Wang L, Fu W, Feng Y, Zeng C, Zhou L, Zhang T, Xu T, Cao J, Li Z, Chen Y. 18F-PEG1-Vinyl Sulfone-Labeled Red Blood Cells as Positron Emission Tomography Agent to Image Intra-Abdominal Bleeding. Front Med (Lausanne) 2021; 8:646862. [PMID: 34291057 PMCID: PMC8287037 DOI: 10.3389/fmed.2021.646862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 06/02/2021] [Indexed: 12/01/2022] Open
Abstract
18F-Labeled blood pool agents (BPAs) have attracted great attention for identifying bleeding sites. However, many BPAs are not sufficiently evaluated partially due to the limitations of labeling methods. In our previous work, we noticed that 18F-PEG1-vinyl sulfone (18F-VS) could efficiently label red blood cells (RBCs) ex vivo and in situ. However, its application as BPA is not fully evaluated. In this study, we systematically explored the feasibility of using 18F-VS-labeled RBCs as a positron emission tomography (PET) BPA for intra-abdominal bleeding diagnosis. In brief, we first optimized the labeling conditions, which lead to an 80% labeling yield of RBCs after incubating with 18F-VS in phosphate-buffered saline (PBS) at 37°C for 20 min. 18F-VS-labeled RBCs were found to be stable in vitro, which could simplify its transportation/storage for in vivo applications. In normal rat PET study, the cardiovascular system could be clearly imaged up to 5 h post injection (p.i.). An intra-abdominal hemorrhage rat model demonstrated that the 18F-VS-labeled RBCs clearly showed the dynamic changes of extravascular radioactivity due to intra-abdominal hemorrhage. Validation in the model of gastrointestinal bleeding clearly demonstrated the great potential of using 18F-VS-labeled RBCs as a BPA, which could be further evaluated in future studies.
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Affiliation(s)
- Xinyi Zhang
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan, Luzhou, China.,Academician (Expert) Workstation of Sichuan, Luzhou, China
| | - Li Wang
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan, Luzhou, China.,Academician (Expert) Workstation of Sichuan, Luzhou, China
| | - Wenhui Fu
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan, Luzhou, China.,Academician (Expert) Workstation of Sichuan, Luzhou, China
| | - Yue Feng
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan, Luzhou, China.,Academician (Expert) Workstation of Sichuan, Luzhou, China
| | - Chengrun Zeng
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan, Luzhou, China.,Academician (Expert) Workstation of Sichuan, Luzhou, China
| | - Liu Zhou
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan, Luzhou, China.,Academician (Expert) Workstation of Sichuan, Luzhou, China.,School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Tao Zhang
- Department of Radiology, Lineberger Comprehensive Cancer Center, and Biomedical Research Imaging Center, University of North Carolina, Chapel Hill, NC, United States
| | - Tingting Xu
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan, Luzhou, China.,Academician (Expert) Workstation of Sichuan, Luzhou, China
| | - Jianpeng Cao
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan, Luzhou, China.,Academician (Expert) Workstation of Sichuan, Luzhou, China
| | - Zibo Li
- Department of Radiology, Lineberger Comprehensive Cancer Center, and Biomedical Research Imaging Center, University of North Carolina, Chapel Hill, NC, United States
| | - Yue Chen
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan, Luzhou, China.,Academician (Expert) Workstation of Sichuan, Luzhou, China
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6
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Staszak K, Wieszczycka K, Bajek A, Staszak M, Tylkowski B, Roszkowski K. Achievement in active agent structures as a power tools in tumor angiogenesis imaging. Biochim Biophys Acta Rev Cancer 2021; 1876:188560. [PMID: 33965512 DOI: 10.1016/j.bbcan.2021.188560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/13/2021] [Accepted: 04/29/2021] [Indexed: 12/26/2022]
Abstract
According to World Health Organization (WHO) cancer is the second most important cause of death globally. Because angiogenesis is considered as an essential process of growth, proliferation and tumor progression, within this review we decided to shade light on recent development of chemical compounds which play a significant role in its imaging and monitoring. Indeed, the review gives insight about the current achievements of active agents structures involved in imaging techniques such as: positron emission computed tomography (PET), magnetic resonance imaging (MRI) and single photon emission computed tomography (SPECT), as well as combination PET/MRI and PET/CT. The review aims to provide the journal audience with a comprehensive and in-deep understanding of chemistry policy in tumor angiogenesis imaging.
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Affiliation(s)
- Katarzyna Staszak
- Institute of Technology and Chemical Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland
| | - Karolina Wieszczycka
- Institute of Technology and Chemical Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland
| | - Anna Bajek
- Department of Tissue Engineering, Collegium Medicum Nicolaus Copernicus University, Karlowicza St. 24, 85-092 Bydgoszcz, Poland
| | - Maciej Staszak
- Institute of Technology and Chemical Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland
| | - Bartosz Tylkowski
- Eurecat, Centre Tecnològic de Catalunya, C/Marcellí Domingo s/n, 43007 Tarragona, Spain
| | - Krzysztof Roszkowski
- Department of Oncology, Collegium Medicum Nicolaus Copernicus University, Romanowskiej St. 2, 85-796 Bydgoszcz, Poland.
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7
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18F-fluorodeoxyglucose positron emission tomography-computed tomography for assessing organ distribution of stressed red blood cells in mice. Sci Rep 2021; 11:2505. [PMID: 33510312 PMCID: PMC7844045 DOI: 10.1038/s41598-021-82100-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 01/13/2021] [Indexed: 02/04/2023] Open
Abstract
Red blood cells (RBCs) stressed by high temperature are similar to senescent or damaged RBCs in pathological conditions. RBCs can be efficiently labelled with 18F-fluorodeoxyglucose (FDG). The aim of this study was to assess stressed RBCs erythrophagocytosis and organ distribution in vivo with the application of 18F-FDG PET/CT. RBCs were induced under high temperature (48 °C) to prepare stressed RBCs. Fluorescence-activated cell sorting (FACS) was used to analyse reactive oxygen species (ROS) generation, intracellular Ca2+ concentration and membrane phosphatidylserine (PS) externalization of RBCs. 18F-FDG was used to label RBCs and assess the erythrophagocytosis. Finally, 18F-FDG PET/CT was applied to reveal and measure the organ distribution of stressed RBCs in mice. Compared with untreated RBCs, stressed RBCs decreased in cell volume and increased in ROS level, intracellular Ca2+ concentration, and PS exposure. RBCs could be labelled by 18F-FDG. Stressed RBCs tended to be phagocytosed by macrophages via assessment of FACS and radioactivity. 18F-FDG PET/CT imaging showed that stressed RBCs were mainly trapped in spleen, while untreated RBCs remained in circulation system. Thus, stressed RBCs can be effectively labelled by 18F-FDG and tend to be trapped in spleen of mice as assessed by PET/CT.
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8
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Yuan J, Yin WY, Wang Y, Chen J, Zhang ZM, Tang YX, Pei SY, Tan LX, Hu XW, Fan XG, Li N. Cargo-laden erythrocyte ghosts target liver mediated by macrophages. Transfus Apher Sci 2020; 60:102930. [PMID: 32933846 DOI: 10.1016/j.transci.2020.102930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 08/12/2020] [Accepted: 08/28/2020] [Indexed: 12/19/2022]
Abstract
Liver-targeted cargo delivery possesses great potential for the treatment of liver disease. It is urgent to find an efficient and biocompatible liver targeted delivery system. This study focused on the liver targeting properties of erythrocyte ghosts and its possible mechanism. Herein, we optimized conditions to fabricate human and mouse erythrocyte ghosts with sufficient room capable of incorporating various model substances. Erythrocyte ghosts are biocompatible cargo carriers because it is derived from autologous red blood cells (RBCs), and the cell size, zeta potential, and biconcave-disk shape of the ghosts were consistent with those of RBCs. An in vivo imaging system and positron emission tomography/computed tomography imaging showed that the ghosts were captured mainly in the liver by intravenous injection of fluorescence or 18F-fluorodeoxyglucose (FDG)-labelled ghosts into mice. In contrast, the main concentration of naked octreotide was trapped in the lungs while naked 18F-FDG was trapped in the heart. However, the concentration of cargo-loaded ghosts decreased significantly in the liver in macrophage-depleted mice. Accordingly, in vitro experiments showed that higher phosphatidylserine exposure was observed in the ghosts (38.9 %) compared to normal erythrocytes (0.69 %), and the phagocytic activity of the macrophage RAW 264.7. on the ghosts was significantly higher than that of normal erythrocytes (p < 0.001). Together they indicate that erythrocyte ghosts show liver targeting properties, and possibly owing to macrophage phagocytosis. This promising and effective therapeutic delivery system may provide therapeutic benefits for liver disease.
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Affiliation(s)
- Jiao Yuan
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Wen-Yu Yin
- Department of Blood Transfusion, Xiangya Hospital, Central South University, Changsha, China
| | - Yang Wang
- Laboratory of Ethnopharmacology Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Jun Chen
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Zhi-Min Zhang
- Department of Blood Transfusion, Xiangya Hospital, Central South University, Changsha, China
| | - Yong-Xiang Tang
- Department of PET Centre, Xiangya Hospital, Central South University, Changsha, China
| | - Si-Ya Pei
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Lin-Xia Tan
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Xing-Wang Hu
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Xue-Gong Fan
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Ning Li
- Department of Blood Transfusion, Xiangya Hospital, Central South University, Changsha, China.
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9
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PET/CT with [ 68Ga]gallium-oxine-labeled heat-denatured red blood cells for detection of dystopic splenic tissue. Eur J Nucl Med Mol Imaging 2020; 48:644-646. [PMID: 32556483 PMCID: PMC7835160 DOI: 10.1007/s00259-020-04899-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 06/01/2020] [Indexed: 11/04/2022]
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10
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Gholipour N, Akhlaghi M, Mokhtari Kheirabadi A, Fasihi Ramandi M, Farashahi A, Beiki D, Jalilian AR. Development of a novel 68Ga-dextran carboxylate derivative for blood pool imaging. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2018-2959] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
To develop a possible PET blood pool imaging agent, a series 68Ga-dextran carboxylate derivatives were prepared. Dextran carboxylates with different degree of oxidations (DO) were prepared through stepwise dextran oxidation using NaIO4 and CH3COOOH. The products were characterized by FT-IR and GPC, followed by solubility and toxicity tests on Hella cells (viability=98.6, 97.4 and 95.6% for 3 dextran carboxylates with DOs: 8.3, 24.6 and 39.8%, respectively. The products were labeled with 68Ga (radiochemical purity>98%; ITLC) followed by stability tests in final solution as well as in presence of cycteine and human serum. Two stable tracers (DOs; 24.6 and 39.8%) were adminstered intravenously into wild type rat tail vein separately demonstrating suitable retention in circulation as expected from blood pool imaging agents. Liver and spleen also contained activities. The major excretion was through urinary pathway esp. for derivative with DO. 39.8%. Unlike 68Ga-dextran, lungs showed lower uptake. The dextran carboxylate with the highest 39.8% showed the best characteristics for a blood pool agent, though more studies including PET imaging in larger mammals are required.
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Affiliation(s)
- Nazila Gholipour
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences , Tehran , Iran
- Faculty of Pharmacy, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Mehdi Akhlaghi
- Research Center for Nuclear Medicine, Tehran University of Medical Sciences , Tehran , Iran
| | | | - Mahdi Fasihi Ramandi
- Molecular Biology Research Center, System Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Ali Farashahi
- Tehran Heart Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Davood Beiki
- Research Center for Nuclear Medicine, Tehran University of Medical Sciences , Tehran , Iran
| | - Amir R. Jalilian
- Tehran University of Medical Sciences, Research Center for Nuclear Medicine, Shariati Hospital , North Kargar Ave., P.O. Box: 1414713135 , Tehran , Iran , Tel.: 0098 21 88633333, Fax: 0098 21 88026905
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11
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Choi JW, Budzevich M, Wang S, Gage K, Estrella V, Gillies RJ. In vivo positron emission tomographic blood pool imaging in an immunodeficient mouse model using 18F-fluorodeoxyglucose labeled human erythrocytes. PLoS One 2019; 14:e0211012. [PMID: 30682160 PMCID: PMC6347438 DOI: 10.1371/journal.pone.0211012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 01/07/2019] [Indexed: 12/21/2022] Open
Abstract
99m-Technetium-labeled (99mTc) erythrocyte imaging with planar scintigraphy is widely used for evaluating both patients with occult gastrointestinal bleeding and patients at risk for chemotherapy-induced cardiotoxicity. While a number of alternative radionuclide-based blood pool imaging agents have been proposed, none have yet to achieve widespread clinical use. Here, we present both in vitro and small animal in vivo imaging evidence that the high physiological expression of the glucose transporter GLUT1 on human erythrocytes allows uptake of the widely available radiotracer 2-deoxy-2-(18F)fluoro-D-glucose (FDG), at a rate and magnitude sufficient for clinical blood pool positron emission tomographic (PET) imaging. This imaging technique is likely to be amenable to rapid clinical translation, as it can be achieved using a simple FDG labeling protocol, requires a relatively small volume of phlebotomized blood, and can be completed within a relatively short time period. As modern PET scanners typically have much greater count detection sensitivities than that of commonly used clinical gamma scintigraphic cameras, FDG-labeled human erythrocyte PET imaging may not only have significant advantages over 99mTc-labeled erythrocyte imaging, but may have other novel blood pool imaging applications.
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Affiliation(s)
- Jung W. Choi
- H. Lee Moffitt Cancer Center and Research Institute, Diagnostic Imaging, Tampa, Florida, United States of America
- H. Lee Moffitt Cancer Center and Research Institute, Department of Cancer Physiology, Tampa, Florida, United States of America
- * E-mail:
| | - Mikalai Budzevich
- H. Lee Moffitt Cancer Center and Research Institute, Department of Cancer Physiology, Tampa, Florida, United States of America
| | - Shaowei Wang
- University of South Florida, Department of Medical Engineering, Tampa, Florida, United States of America
| | - Kenneth Gage
- H. Lee Moffitt Cancer Center and Research Institute, Diagnostic Imaging, Tampa, Florida, United States of America
| | - Veronica Estrella
- H. Lee Moffitt Cancer Center and Research Institute, Department of Cancer Physiology, Tampa, Florida, United States of America
| | - Robert J. Gillies
- H. Lee Moffitt Cancer Center and Research Institute, Diagnostic Imaging, Tampa, Florida, United States of America
- H. Lee Moffitt Cancer Center and Research Institute, Department of Cancer Physiology, Tampa, Florida, United States of America
- H. Lee Moffitt Cancer Center and Research Institute, Program in Cancer Biology and Evolution, Tampa, Florida, United States of America
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12
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Aliyu SA, Avery G, Cawthorne C, Archibald SJ, Kadir T, Willaime JMY, Morice AH, Hart SP, Crooks MG. Textural analysis demonstrates heterogeneous [ 18F]-fluorodeoxyglucose uptake in radiologically normal lung in patients with idiopathic pulmonary fibrosis. Eur Respir J 2018; 52:13993003.01138-2018. [PMID: 30262576 DOI: 10.1183/13993003.01138-2018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/24/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Shamsuddeen A Aliyu
- Respiratory Research Group, Hull York Medical School, Castle Hill Hospital, Cottingham, UK.,PET Research Centre, University of Hull, Hull, UK
| | - Ged Avery
- Hull and East Yorkshire Hospitals NHS Trust, Castle Hill Hospital, Cottingham, UK
| | | | | | - Timor Kadir
- Optellum Ltd, Oxford Centre for Innovation, Oxford, UK
| | | | - Alyn H Morice
- Respiratory Research Group, Hull York Medical School, Castle Hill Hospital, Cottingham, UK
| | - Simon P Hart
- Respiratory Research Group, Hull York Medical School, Castle Hill Hospital, Cottingham, UK
| | - Michael G Crooks
- Respiratory Research Group, Hull York Medical School, Castle Hill Hospital, Cottingham, UK
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Thompson S, Rodnick ME, Stauff J, Arteaga J, Desmond TJ, Scott PJH, Viglianti BL. Automated synthesis of [ 68Ga]oxine, improved preparation of 68Ga-labeled erythrocytes for blood-pool imaging, and preclinical evaluation in rodents. MEDCHEMCOMM 2018; 9:454-459. [PMID: 30108935 PMCID: PMC6071839 DOI: 10.1039/c7md00607a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 01/31/2018] [Indexed: 01/05/2023]
Abstract
Radiolabeled erythrocytes have multiple applications in nuclear medicine, including blood pool imaging. Historically they have been labeled with SPECT radionuclides. A PET blood pool imaging agent is highly desirable as it would improve clinical applications with better image quality and resolution, higher sensitivity, and dynamic scanning capabilities. With the coming of age of modern 68Ge/68Ga generator systems, gallium-68 is now widely accessible. In this paper we describe an updated method for the preparation of 68Ga-labeled erythrocytes and their preliminary use in rodent blood pool imaging. A novel automated synthesis of [68Ga]oxine using a 68Ga/68Ge generator and automated synthesis module is reported. [68Ga]Oxine was synthesized in 50 ± 5% (n = 3) non-decay corrected radiochemical yield and >99% radiochemical purity. Rat and human erythrocytes were successfully labeled with the complex in 42% RCY, and the 68Ga-labeled erythrocytes have been shown to clearly image the blood pool in a healthy rat. Human erythrocytes labelled with [68Ga]oxine were shown to be viable up to 2 hours post-labelling, and washout of the radiolabel was minimal up to 1 hour post-labelling. Further optimization of the labeling method to translate for use in human cardiac and oncologic blood pool PET imaging studies, is underway.
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Affiliation(s)
- Stephen Thompson
- Department of Radiology , University of Michigan Medical School , Ann Arbor , MI 48109 , USA . ; Tel: (+1) 919 451 0813
| | - Melissa E Rodnick
- Department of Radiology , University of Michigan Medical School , Ann Arbor , MI 48109 , USA . ; Tel: (+1) 919 451 0813
| | - Jenelle Stauff
- Department of Radiology , University of Michigan Medical School , Ann Arbor , MI 48109 , USA . ; Tel: (+1) 919 451 0813
| | - Janna Arteaga
- Department of Radiology , University of Michigan Medical School , Ann Arbor , MI 48109 , USA . ; Tel: (+1) 919 451 0813
| | - Timothy J Desmond
- Department of Radiology , University of Michigan Medical School , Ann Arbor , MI 48109 , USA . ; Tel: (+1) 919 451 0813
| | - Peter J H Scott
- Department of Radiology , University of Michigan Medical School , Ann Arbor , MI 48109 , USA . ; Tel: (+1) 919 451 0813
| | - Benjamin L Viglianti
- Department of Radiology , University of Michigan Medical School , Ann Arbor , MI 48109 , USA . ; Tel: (+1) 919 451 0813
- Department of Veterans Administration , Ann Arbor , MI 48105 , USA
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14
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Matsusaka Y, Nakahara T, Takahashi K, Iwabuchi Y, Ogata Y, Nishime C, Kajimura M, Jinzaki M. Preclinical evaluation of heat-denatured [ 18F]FDG-labeled red blood cells for detecting splenic tissues with PET in rats. Nucl Med Biol 2017; 56:26-30. [PMID: 29125999 DOI: 10.1016/j.nucmedbio.2017.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/12/2017] [Accepted: 09/14/2017] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Heat-denatured 99mTc-labeled red blood cells (RBCs) are used for detecting splenic tissues with scintigraphy. The present study aimed to evaluate the feasibility of using heat-denatured [18F]fluorodeoxyglucose ([18F]FDG)-labeled RBCs in detecting splenic tissues using positron emission tomography (PET) in rats. METHODS RBCs were washed with phosphate buffered saline, labeled with [18F]FDG at 38°C, and heat-denatured at 50°C for 15 min. In vitro stability was assessed by measuring extracellular radioactivity during the 0-180 min incubation at 37°C. Thin layer chromatography (TLC) of the extracellular fluid was performed. The autologous RBCs were intravenously injected in four rats and PET scanning was simultaneously performed for 30 min. Time-activity curves of several organs, including the spleen, were analyzed on the PET images. RESULTS Labeling efficiency was 92%. Low levels of radioactivity were released from the labeled RBCs for 180 min. TLC revealed that 80% of the released radioactivity was due to [18F]FDG-6-phosphate. Whole body images showed strong uptake of heat-denatured [18F]FDG-labeled RBCs in the spleen soon after injection in all four rats. Time-activity curves revealed that the splenic uptake continued to increase for 30 min and the amount of radioactivity in the other organs, except the urinary bladder, decreased after the initial surge. CONCLUSIONS Heat-denatured [18F]FDG-labeled RBCs are suitable spleen-specific agents for PET. This method is clinically relevant as an alternative for heat-denatured 99mTc-labeled RBC scintigraphy.
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Affiliation(s)
- Yohji Matsusaka
- Department of Diagnostic Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Tadaki Nakahara
- Department of Diagnostic Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Kazuhiro Takahashi
- Department of Diagnostic Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yu Iwabuchi
- Department of Diagnostic Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yuji Ogata
- Department of Diagnostic Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Chiyoko Nishime
- Central Institute for Experimental Animals, Kawasaki-ku, Kawasaki, Kanagawa, 210-0821, Japan
| | - Mayumi Kajimura
- Department of Biology, Keio University School of Medicine, Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, 223-8522, Japan
| | - Masahiro Jinzaki
- Department of Diagnostic Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
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