1
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Alberto R. Role of Pure Technetium Chemistry: Are There Still Links to Applications in Imaging? Inorg Chem 2023; 62:20539-20548. [PMID: 37417737 PMCID: PMC10731660 DOI: 10.1021/acs.inorgchem.3c01620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Indexed: 07/08/2023]
Abstract
The discovery and development of new 99mTc-based radiopharmaceuticals or labeled drugs in general is based on innovative, pure chemistry and subsequent, application-targeted research. This was the case for all currently clinically applied imaging agents. Most of them were market-introduced some 20 years ago, and the few more recent ones are based on even older chemistry, albeit technetium chemistry has made substantial progress over the last 20 years. This progress though is not mirrored by new molecular imaging agents and is even accompanied by a steady decrease in the number of groups active in pure and applied technetium chemistry, a contrast to the trends in most other fields in which d-elements play a central role. The decrease in research with technetium has been partly counterbalanced by a strong increase of research activities with homologous, cold rhenium compounds for therapy, disclosing in the future eventually a quite unique opportunity for theranostics. This Viewpoint analyzes the pathways that led to radiopharmaceuticals in the past and their underlying fundamental contributions. It attempts to tackle the question of why new chemistry still does not lead to new imaging agents, i.e., the question of whether pure technetium chemistry is still needed at all.
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Affiliation(s)
- Roger Alberto
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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2
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Ngo MC, Fujita Y, Suzuki T, Dung Do TM, Seki M, Nakayama T, Niihara K, Suematsu H. β-MoO 3 Whiskers in 99Mo/ 99mTc Radioisotope Production and 99Mo/ 99mTc Extraction Using Hot Atoms. Inorg Chem 2023; 62:13140-13147. [PMID: 37527499 DOI: 10.1021/acs.inorgchem.3c02125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
β-MoO3 whiskers prepared by a thermal evaporation method and α-MoO3 particles were irradiated in a nuclear reactor to produce 99Mo/99mTc radioisotopes via neutron capture. The irradiated targets were then dispersed in water to extract the 99Mo/99mTc isotopes. Of the 99Mo formed in the β-MoO3 whiskers, 64.0 ± 7.4% was extracted with water; by contrast, only 8.8 ± 2.6% of the 99Mo formed in α-MoO3 was extracted. By comparing these data to the 98Mo concentration dissolved in water, we confirmed the hot-atom effect on both β-MoO3 whisker and α-MoO3 particle targets to transfer 99Mo isotopes from irradiated samples to water. In addition, the β-MoO3 whiskers exhibited a prominent hot-atom effect to transfer a higher ratio of 99Mo isotopes into water. To the best of our knowledge, this research is the first demonstration of β-MoO3 being used as an irradiation target in the neutron capture method. On the basis of the results, β-MoO3 is considered a promising irradiation target for producing 99Mo/99mTc by neutron capture and using water for the radioisotope extraction process in the future.
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Affiliation(s)
- Minh Chu Ngo
- Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
- Multi-Material Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Nagoya, Aichi 463-8560, Japan
- Faculty of International Training, Thai Nguyen University of Technology, Thai Nguyen 251750, Viet Nam
| | - Yoshitaka Fujita
- Department of JMTR, Japan Atomic Energy Agency, 4002 Narita, Oarai, Ibaraki 311-1393, Japan
| | - Tatsuya Suzuki
- Department of Nuclear System Safety Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
| | - Thi Mai Dung Do
- Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
| | - Misaki Seki
- Department of JMTR, Japan Atomic Energy Agency, 4002 Narita, Oarai, Ibaraki 311-1393, Japan
| | - Tadachika Nakayama
- Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
| | - Koichi Niihara
- Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
| | - Hisayuki Suematsu
- Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
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3
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Ruan Q, Wang Q, Jiang Y, Feng J, Yin G, Zhang J. Synthesis and Evaluation of 99mTc-Labeled FAP Inhibitors with Different Linkers for Imaging of Fibroblast Activation Proteins in Tumors. J Med Chem 2023; 66:4952-4960. [PMID: 36972467 DOI: 10.1021/acs.jmedchem.2c02062] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Fibroblast activation protein (FAP) is a potential target for tumor diagnosis and treatment due to its selective expression on cancer-associated fibroblasts (CAFs) in most solid tumor stroma. Two FAP inhibitor (FAPI) derived ligands (L1 and L2) containing different lengths of DPro-Gly (PG) repeat units as linkers were designed and synthesized with high affinity for FAP. Two stable hydrophilic 99mTc-labeled complexes ([99mTc]Tc-L1 and [99mTc]Tc-L2) were obtained. In vitro cellular studies show that the uptake mechanism is correlated with FAP uptake, and [99mTc]Tc-L1 shows a higher cell uptake and specific binding to FAP. A nanomolar Kd value for [99mTc]Tc-L1 indicates its significantly high target affinity for FAP. The biodistribution and microSPECT/CT images obtained for U87MG tumor mice show that [99mTc]Tc-L1 has high tumor uptake with specificity to FAP and high tumor-to-nontarget ratios. As an inexpensive, easily made, and widely available tracer, [99mTc]Tc-L1 holds great promise for clinical applications.
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Affiliation(s)
- Qing Ruan
- Key Laboratory of Radiopharmaceuticals of the Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
- Key Laboratory of Beam Technology of the Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, P. R. China
| | - Qianna Wang
- Key Laboratory of Radiopharmaceuticals of the Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Yuhao Jiang
- Key Laboratory of Radiopharmaceuticals of the Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Junhong Feng
- Key Laboratory of Radiopharmaceuticals of the Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Guangxing Yin
- Key Laboratory of Radiopharmaceuticals of the Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Junbo Zhang
- Key Laboratory of Radiopharmaceuticals of the Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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4
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Benfante V, Stefano A, Ali M, Laudicella R, Arancio W, Cucchiara A, Caruso F, Cammarata FP, Coronnello C, Russo G, Miele M, Vieni A, Tuttolomondo A, Yezzi A, Comelli A. An Overview of In Vitro Assays of 64Cu-, 68Ga-, 125I-, and 99mTc-Labelled Radiopharmaceuticals Using Radiometric Counters in the Era of Radiotheranostics. Diagnostics (Basel) 2023; 13:diagnostics13071210. [PMID: 37046428 PMCID: PMC10093267 DOI: 10.3390/diagnostics13071210] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 04/14/2023] Open
Abstract
Radionuclides are unstable isotopes that mainly emit alpha (α), beta (β) or gamma (γ) radiation through radiation decay. Therefore, they are used in the biomedical field to label biomolecules or drugs for diagnostic imaging applications, such as positron emission tomography (PET) and/or single-photon emission computed tomography (SPECT). A growing field of research is the development of new radiopharmaceuticals for use in cancer treatments. Preclinical studies are the gold standard for translational research. Specifically, in vitro radiopharmaceutical studies are based on the use of radiopharmaceuticals directly on cells. To date, radiometric β- and γ-counters are the only tools able to assess a preclinical in vitro assay with the aim of estimating uptake, retention, and release parameters, including time- and dose-dependent cytotoxicity and kinetic parameters. This review has been designed for researchers, such as biologists and biotechnologists, who would like to approach the radiobiology field and conduct in vitro assays for cellular radioactivity evaluations using radiometric counters. To demonstrate the importance of in vitro radiopharmaceutical assays using radiometric counters with a view to radiogenomics, many studies based on 64Cu-, 68Ga-, 125I-, and 99mTc-labeled radiopharmaceuticals have been revised and summarized in this manuscript.
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Affiliation(s)
- Viviana Benfante
- Ri.MED Foundation, Via Bandiera 11, 90133 Palermo, Italy
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Molecular and Clinical Medicine, University of Palermo, 90127 Palermo, Italy
- Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), 90015 Cefalù, Italy
| | - Alessandro Stefano
- Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), 90015 Cefalù, Italy
| | - Muhammad Ali
- Ri.MED Foundation, Via Bandiera 11, 90133 Palermo, Italy
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Molecular and Clinical Medicine, University of Palermo, 90127 Palermo, Italy
| | | | - Walter Arancio
- Ri.MED Foundation, Via Bandiera 11, 90133 Palermo, Italy
| | - Antonino Cucchiara
- Department of Diagnostic and Therapeutic Services, IRCCS-ISMETT (Mediterranean Institute for Transplantation and Advanced Specialized Therapies), Via Tricomi 5, 90127 Palermo, Italy
| | - Fabio Caruso
- Department of Diagnostic and Therapeutic Services, IRCCS-ISMETT (Mediterranean Institute for Transplantation and Advanced Specialized Therapies), Via Tricomi 5, 90127 Palermo, Italy
| | - Francesco Paolo Cammarata
- Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), 90015 Cefalù, Italy
| | - Claudia Coronnello
- Ri.MED Foundation, Via Bandiera 11, 90133 Palermo, Italy
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
| | - Giorgio Russo
- Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), 90015 Cefalù, Italy
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
| | - Monica Miele
- Ri.MED Foundation, Via Bandiera 11, 90133 Palermo, Italy
| | - Alessandra Vieni
- Department of Diagnostic and Therapeutic Services, IRCCS-ISMETT (Mediterranean Institute for Transplantation and Advanced Specialized Therapies), Via Tricomi 5, 90127 Palermo, Italy
| | - Antonino Tuttolomondo
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Molecular and Clinical Medicine, University of Palermo, 90127 Palermo, Italy
| | - Anthony Yezzi
- Department of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Albert Comelli
- Ri.MED Foundation, Via Bandiera 11, 90133 Palermo, Italy
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
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5
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Tai W, Yang J, Wu F, Shi K, Zhang Y, Zhu S, Hou X. Ultrafast and selective separation of 99mTc from molybdenum matrix using DBDGA deliberately tailored macrocyclic crown-ethers. JOURNAL OF HAZARDOUS MATERIALS 2023; 444:130437. [PMID: 36436388 DOI: 10.1016/j.jhazmat.2022.130437] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/04/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Technetium-99m (99mTc) is an important medical radionuclide. Due to the crisis in supply of molybdenum-99 (99Mo), production of 99mTc directly via the 100Mo (p, 2 n) reaction by cyclotron was proposed. In this process, the most critical challenge is to rapidly and efficiently separate 99mTc from high concentration of molybdenum. In this work, a novel ligand, bis(N,N-dibutyldiglycolamide)dibenzo-18-crown-6 (BisDBDGA-DB18C6) was successfully synthesized and used for extraction of TcO4- /ReO4- from molybdenum. The results demonstrated that BisDBDGA-DB18C6 expressed excellent selectivity for TcO4- with a high separation factor of 1.6 × 105 against Mo, a fast extraction kinetic (within 45 s), and a high extraction capacity of 211 mmol ReO4- (99TcO4-)/per mole of extractant. The extraction mechanism was proposed as a co-interaction of macrocyclic crown ether and N,N-dibutyldiglycolamide group through slope analysis, FT-IR, ESI-MS, 1H NMR titration and theory calculations. Importantly, 99Tc in the organic phase can be quantitatively (> 99%) and easily back-extracted using deionized water, which can be directly used for medical applications.
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Affiliation(s)
- Wenya Tai
- Frontier Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, PR China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Junqiang Yang
- Frontier Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, PR China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Fei Wu
- Frontier Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou 730000, PR China
| | - Keliang Shi
- Frontier Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, PR China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou 730000, PR China.
| | - Yaowen Zhang
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Shaodong Zhu
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Xiaolin Hou
- Frontier Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, PR China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou 730000, PR China.
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6
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Cardoso ME, Decuadra P, Zeni M, Delfino A, Tejería E, Coppe F, Mesa JM, Daher G, Giglio J, Carrau G, Gamenara D, Alonso O, Terán M, Rey A. Development and Evaluation of 99mTc Tricarbonyl Complexes Derived from Flutamide with Affinity for Androgen Receptor. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020820. [PMID: 36677878 PMCID: PMC9863320 DOI: 10.3390/molecules28020820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/07/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023]
Abstract
With the objective to develop a potential 99mTc radiopharmaceutical for imaging the androgen receptor (AR) in prostate cancer, four ligands bearing the same pharmacophore derived from the AR antagonist flutamide were prepared, labeled with 99mTc, and their structures corroborated via comparison with the corresponding stable rhenium analogs. All complexes were obtained with high radiochemical purity. Three of the complexes were highly stable, and, due to their favorable physicochemical properties, were further evaluated using AR-positive and AR-negative cells in culture. All complexes exhibited considerable uptake in AR-positive cells, which could be blocked by an excess of flutamide. The efflux from the cells was moderate. They also showed significantly lower uptakes in AR-negative cells, indicating interactions with the AR receptor. However, the binding affinities were considerably reduced by the coordination to 99mTc, and the complex that exhibited the best biological behavior did not show sufficient specificity towards AR-positive cells.
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Affiliation(s)
- María Elena Cardoso
- Radiochemistry Area, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Paula Decuadra
- Radiochemistry Area, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Maia Zeni
- Radiochemistry Area, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Agustín Delfino
- Organic Chemistry Department, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Emilia Tejería
- Radiochemistry Area, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Fátima Coppe
- Centro de Medicina Nuclear e Imagenología Molecular-Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Av.Italia s/n, Montevideo CP11400, Uruguay
| | - Juan Manuel Mesa
- Organic Chemistry Department, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Grysette Daher
- Organic Chemistry Department, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Javier Giglio
- Radiochemistry Area, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Gonzalo Carrau
- Organic Chemistry Department, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Daniela Gamenara
- Organic Chemistry Department, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Omar Alonso
- Centro de Medicina Nuclear e Imagenología Molecular-Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Av.Italia s/n, Montevideo CP11400, Uruguay
| | - Mariella Terán
- Radiochemistry Area, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
| | - Ana Rey
- Radiochemistry Area, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo CP11800, Uruguay
- Correspondence: ; Tel.: +598-2924-8571
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7
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Jaswal A, Hazari PP, Prakash S, Sethi P, Kaushik A, Roy BG, Kathait S, Singh B, Mishra AK. [ 99mTc]Tc-DTPA-Bis(cholineethylamine) as an Oncologic Tracer for the Detection of Choline Transporter (ChT) and Choline Kinase (ChK) Expression in Cancer. ACS OMEGA 2022; 7:12509-12523. [PMID: 35474820 PMCID: PMC9025991 DOI: 10.1021/acsomega.1c04256] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
OBJECTIVE The elevated choline transporters (ChT), choline kinase (ChK), choline uptake, and phosphorylation in certain tumor cells have influenced the development of radiolabeled choline derivatives as diagnostic probes for imaging cell membrane proliferation. We, therefore, aimed to develop a choline-based moiety for imaging choline kinase-overexpressed tumors by single-photon emission tomography (SPECT). A novel choline-based diagnostic probe was synthesized and evaluated preclinically in various ChT- and ChK-overexpressed tumor models for SPECT imaging applications. METHODS The synthesis of diethylenetriaminepentaacetic acid-bis-choline ethylamine [DTPA-bis(ChoEA)] featured the conjugation of dimethylaminoethanol to a bifunctional chelator DTPA anhydride. [99mTc]Tc-DTPA-bis(ChoEA) was prepared, and its in vivo characteristics were evaluated in BALB/c mice and tumor-xenografted PC3, A549, and HCT116 athymic mouse models. The in vitro parameters, including cell binding and cytotoxicity, were assessed in PC3, A549, and HCT116 cell lines. To evaluate the specificity of the radioprobe, competitive binding studies were performed. Small-animal SPECT/CT diagnostic imaging was performed for in vivo evaluation. The mouse biodistribution data was further investigated to estimate the radiation dose in humans. RESULTS In silico studies suggested high binding with enhanced specificity. A standard radiolabeling procedure using stannous chloride as a reducing agent showed a labeling yield of 99.5 ± 0.5%. The in silico studies suggested high binding with enhanced specificity. [99mTc]Tc-DTPA-bis(ChoEA) showed high in vitro stability and specificity. The pharmacokinetic studies of [99mTc]Tc-DTPA-bis(ChoEA) in mice showed an increased tumor-to-background ratio after few minutes of intravenous administration. The first-in-human trial was also conducted. The effective dose was estimated to be 0.00467 mSv/MBq (4.67 mSv/GBq), resulting in a radiation dose of up to 1.73 mSv for the 370 MBq injection of [99mTc]Tc-DTPA-bis(ChoEA). CONCLUSIONS The synthesized radioprobe [99mTc]Tc-DTPA-bis(ChoEA) accumulates specifically in choline kinase-overexpressed tumors with a high signal-to-noise ratio. The preclinical and first-in-man data suggested that [99mTc]Tc-DTPA-bis(ChoEA) could potentially be used as a diagnostic SPECT tracer in the monitoring and staging of cancer.
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Affiliation(s)
- Ambika
Parmar Jaswal
- Division
of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig S.K. Mazumdar Road, Delhi 110054, India
| | - Puja Panwar Hazari
- Division
of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig S.K. Mazumdar Road, Delhi 110054, India
| | - Surbhi Prakash
- Division
of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig S.K. Mazumdar Road, Delhi 110054, India
| | - Pallavi Sethi
- Division
of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig S.K. Mazumdar Road, Delhi 110054, India
| | - Aruna Kaushik
- Department
of Nuclear Medicine, Institute of Nuclear
Medicine and Allied Sciences, Brig S.K. Mazumdar Road, Delhi 110054, India
| | - Bal G. Roy
- Experimental
Animal Facility, Institute of Nuclear Medicine
and Allied Sciences, Brig S.K. Mazumdar Road, Delhi 110054, India
| | - Swati Kathait
- Division
of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig S.K. Mazumdar Road, Delhi 110054, India
| | - Baljinder Singh
- Post
Graduate Institute of Medical Education & Research, Chandigarh 160012, India
| | - Anil Kumar Mishra
- Division
of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig S.K. Mazumdar Road, Delhi 110054, India
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8
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Sanad MH, Marzook FA, Farag AB, Mandal SK, Rizvi SFA, Gupta JK. Preparation, biological evaluation and radiolabeling of [99mTc]-technetium tricarbonyl procainamide as a tracer for heart imaging in mice. RADIOCHIM ACTA 2022. [DOI: 10.1515/ract-2021-1079] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Abstract
This study focuses on the synthesis and preliminary bio-evaluation of [99mTc]-technetium tricarbonyl procainamide ([99mTc]-technetium tricarbony PA) as a viable cardiac imaging agent. The compound, [99mTc]-technetium tricarbony PA, was synthesized by labelling procainamide with a [99mTc]-technetium tricarbonyl core, yielding a high radiochemical yield and radiochemical purity of 98%. Under optimal circumstances, high radiochemical yield and purity were obtained utilizing [99mTc]-technetium tricarbonyl core within 30 min of incubation at pH 9, 200 µg substrate concentration, and 100 °C reaction temperature. The heart showed a high absorption of 32.39 ± 0.88% of the injected dose/g organ (ID/g), confirming the suitability of [99mTc]-technetium tricarbonyl PA as a viable complex for heart imaging.
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department , Hot Laboratories Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - Fawzy A. Marzook
- Labeled Compounds Department , Hot Laboratories Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - Ayman B. Farag
- Pharmaceutical Chemistry Department , Faculty of Pharmacy, Ahram Canadian University , Giza , Egypt
| | - Sudip Kumar Mandal
- Department of Pharmaceutical Chemistry , Dr. B. C. Roy College of Pharmacy and Allied Health Sciences , Durgapur 713206 , West Bengal , India
| | - Syed F. A. Rizvi
- College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , Gansu , P. R. China
| | - Jeetendra Kumar Gupta
- Institute of Pharmaceutical Research , GLA University Mathura , Uttar Pradesh , India
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9
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Ghosh S, Suman SK, Sarma HD, Das T. Exploring the prospective of 99mTc-labeled DNA intercalator in tumor imaging: Studies with 99mTc-acridine. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Rafique A, Rasheed R, Shamim S, Ijaz M, Murtaza G. A Review on Nuclear Imaging as a Promising Modality for Efficient Diagnosis of Tuberculosis. Curr Med Imaging 2021; 18:18-31. [PMID: 34238164 DOI: 10.2174/1573405617666210707150811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/30/2021] [Accepted: 05/11/2021] [Indexed: 11/22/2022]
Abstract
Tuberculosis (TB) is an infectious disease and is declared a global health issue by the World Health Organization in 1993. Due to the complex pathophysiology of Mycobacterium tuberculosis, it remains a global threat. This article reviews the conventional diagnostic modalities for tuberculosis, their limitations to detect latent TB, multiple drug-resistant TB, human immunodeficiency virus co-infected TB lesions, and TB in children. Moreover, this review illustrates the importance of nuclear medicine imaging for early, non-invasive diagnosis of TB to detect disease stages and monitor therapy response. Currently, single-photon emission computed tomography and positron emission tomography with their specific radionuclides have been extensively used for a thorough assessment of TB.
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Affiliation(s)
- Asma Rafique
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus 22600. Pakistan
| | - Rashid Rasheed
- Institute of Nuclear Medicines, Oncology,and Radiations (INOR), Ayub Medical Hospital, Abbottabad. Pakistan
| | - Saba Shamim
- Institute of Molecular Biology and Biotechnology, the University of Lahore, Lahore. Pakistan
| | - Munazza Ijaz
- Institute of Molecular Biology and Biotechnology, the University of Lahore, Lahore. Pakistan
| | - Ghulam Murtaza
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus 54000. Pakistan
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11
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Costelloe CM, Lin PP, Chuang HH, Amini B, Chainitikun S, Yu TK, Ueno NT, Murphy WA, Madewell JE. Bone Metastases: Mechanisms of the Metastatic Process, Imaging and Therapy. Semin Ultrasound CT MR 2020; 42:164-183. [PMID: 33814103 DOI: 10.1053/j.sult.2020.08.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The mechanisms by which tumors metastasize to bone are complex. Upon the successful establishment of metastatic deposits in the skeleton, detection of the disease becomes essential for therapeutic planning. The roles of CT, skeletal scintigraphy, SPECT/CT, MRI, PET/CT and PET/MRI will be reviewed. Therapeutic response criteria specifically designed to evaluate bone metastases (MD Anderson/MDA criteria) can guide image interpretation. Knowledge of therapeutic strategies such as systemic therapy with bisphosphonates or radiopharmaceuticals, radiation therapy, surgery, and percutaneous interventions such as vertebroplasty and radiofrequency ablation can help the radiologist produce reports that will provide maximum benefit to clinicians and patients.
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Affiliation(s)
- Colleen M Costelloe
- Department of Musculoskeletal Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX.
| | - Patrick P Lin
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Hubert H Chuang
- Department of Nuclear Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Behrang Amini
- Department of Musculoskeletal Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Sudpreeda Chainitikun
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Tse-Kuan Yu
- Radiation Oncology, Houston Precision Cancer Center, Houston, TX
| | - Naoto T Ueno
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - William A Murphy
- Department of Musculoskeletal Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - John E Madewell
- Department of Musculoskeletal Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX
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12
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Imafuku M, Oki S, Suzuki M. Bromine‐Terminated
β
‐Alkyl‐Substituted Tripyrrin: Reactivity, Coordination Ability, and Role as Extendable Acyclic Oligo‐Pyrrole Ligand. ChemistrySelect 2020. [DOI: 10.1002/slct.202001412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Masato Imafuku
- Interdisciplinary Graduate School of Science and EngineeringShimane University 1060 Nishikawatsu-cho Matsue, Shimane 690-8504 Japan
| | - Setsuna Oki
- Interdisciplinary Graduate School of Science and EngineeringShimane University 1060 Nishikawatsu-cho Matsue, Shimane 690-8504 Japan
| | - Masaaki Suzuki
- Interdisciplinary Graduate School of Science and EngineeringShimane University 1060 Nishikawatsu-cho Matsue, Shimane 690-8504 Japan
- Graduate School of Natural Science and TechnologyShimane University 1060 Nishikawatsu-cho, Matsue Shimane 690-8504 Japan
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13
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Abstract
Taking advantage of the radiation properties of 99mTc and 186/188Re and the photophysical characteristics of the {M(CO)3}+ moiety (M = Re), we developed a multifunctional silica platform with the theranostic pair 99mTc/Re with high potential for (nano)medical applications. Starting with a general screening to evaluate the most suitable mesoporous silica construct and the development of appropriate chelate systems, multifunctional mesoporous silica microparticles (SBA-15) were synthesized. These particles act as a model towards the synthesis of the corresponding nanoconstructs. The particles can be modified at the external surface with a targeting function and labeled with the {M(CO)3}+ moiety (M = 99mTc, Re) at the pore surface. Thus, a silica platform is realized, whose bioprofile is not altered by the loaded modalities. The described synthetic procedures can be applied to establish a target-specific theranostic nanoplatform, which enables the combination of fluorescence and radio imaging, with the possibility of radio- and chemotherapy.
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14
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Costa B, Ilem-Özdemir D, Santos-Oliveira R. Technetium-99m metastable radiochemistry for pharmaceutical applications: old chemistry for new products. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1632838] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bianca Costa
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Rio de Janeiro, Brazil
| | - Derya Ilem-Özdemir
- Department of Radiopharmacy, Faculty of Pharmacy, Ege University, Bornova, İzmir, Turkey
| | - Ralph Santos-Oliveira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Rio de Janeiro, Brazil
- Laboratory of Radiopharmacy and Nanoradiopharmaceuticals, Zona Oeste State University, Rio de Janeiro, Brazil
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15
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Lepareur N, Lacœuille F, Bouvry C, Hindré F, Garcion E, Chérel M, Noiret N, Garin E, Knapp FFR. Rhenium-188 Labeled Radiopharmaceuticals: Current Clinical Applications in Oncology and Promising Perspectives. Front Med (Lausanne) 2019; 6:132. [PMID: 31259173 PMCID: PMC6587137 DOI: 10.3389/fmed.2019.00132] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 05/29/2019] [Indexed: 12/14/2022] Open
Abstract
Rhenium-188 (188Re) is a high energy beta-emitting radioisotope with a short 16.9 h physical half-life, which has been shown to be a very attractive candidate for use in therapeutic nuclear medicine. The high beta emission has an average energy of 784 keV and a maximum energy of 2.12 MeV, sufficient to penetrate and destroy targeted abnormal tissues. In addition, the low-abundant gamma emission of 155 keV (15%) is efficient for imaging and for dosimetric calculations. These key characteristics identify 188Re as an important therapeutic radioisotope for routine clinical use. Moreover, the highly reproducible on-demand availability of 188Re from the 188W/188Re generator system is an important feature and permits installation in hospital-based or central radiopharmacies for cost-effective availability of no-carrier-added (NCA) 188Re. Rhenium-188 and technetium-99 m exhibit similar chemical properties and represent a “theranostic pair.” Thus, preparation and targeting of 188Re agents for therapy is similar to imaging agents prepared with 99mTc, the most commonly used diagnostic radionuclide. Over the last three decades, radiopharmaceuticals based on 188Re-labeled small molecules, including peptides, antibodies, Lipiodol and particulates have been reported. The successful application of these 188Re-labeled therapeutic radiopharmaceuticals has been reported in multiple early phase clinical trials for the management of various primary tumors, bone metastasis, rheumatoid arthritis, and endocoronary interventions. This article reviews the use of 188Re-radiopharmaceuticals which have been investigated in patients for cancer treatment, demonstrating that 188Re represents a cost effective alternative for routine clinical use in comparison to more expensive and/or less readily available therapeutic radioisotopes.
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Affiliation(s)
- Nicolas Lepareur
- Comprehensive Cancer Center Eugène Marquis Rennes, France.,Univ Rennes Inra, Inserm, Institut NUMECAN (Nutrition, Métabolismes et Cancer)-UMR_A 1341, UMR_S 1241, Rennes, France
| | - Franck Lacœuille
- Angers University Hospital Angers, France.,Univ Angers Univ Nantes, Inserm, CNRS, CRCINA (Centre de Recherche en Cancérologie et Immunologie Nantes-Angers)-UMR 1232, ERL 6001, Nantes, France
| | - Christelle Bouvry
- Comprehensive Cancer Center Eugène Marquis Rennes, France.,Univ Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes, France
| | - François Hindré
- Univ Angers Univ Nantes, Inserm, CNRS, CRCINA (Centre de Recherche en Cancérologie et Immunologie Nantes-Angers)-UMR 1232, ERL 6001, Nantes, France.,Univ Angers PRIMEX (Plateforme de Radiobiologie et d'Imagerie EXperimentale), Angers, France
| | - Emmanuel Garcion
- Univ Angers Univ Nantes, Inserm, CNRS, CRCINA (Centre de Recherche en Cancérologie et Immunologie Nantes-Angers)-UMR 1232, ERL 6001, Nantes, France.,Univ Angers PRIMEX (Plateforme de Radiobiologie et d'Imagerie EXperimentale), Angers, France
| | - Michel Chérel
- Univ Angers Univ Nantes, Inserm, CNRS, CRCINA (Centre de Recherche en Cancérologie et Immunologie Nantes-Angers)-UMR 1232, ERL 6001, Nantes, France.,ICO (Institut de Cancérologie de l'Ouest) Comprehensive Cancer Center René Gauducheau, Saint-Herblain, France
| | - Nicolas Noiret
- Univ Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes, France.,ENSCR (Ecole Nationale Supérieure de Chimie de Rennes) Rennes, France
| | - Etienne Garin
- Comprehensive Cancer Center Eugène Marquis Rennes, France.,Univ Rennes Inra, Inserm, Institut NUMECAN (Nutrition, Métabolismes et Cancer)-UMR_A 1341, UMR_S 1241, Rennes, France
| | - F F Russ Knapp
- Emeritus Medical Radioisotopes Program, ORNL (Oak Ridge National Laboratory), Oak Ridge, TN, United States
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16
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Pilon A, Lorenzo J, Rodriguez-Calado S, Adão P, Martins AM, Valente A, Alves LG. New Cyclams and Their Copper(II) and Iron(III) Complexes: Synthesis and Potential Application as Anticancer Agents. ChemMedChem 2019; 14:770-778. [PMID: 30694018 DOI: 10.1002/cmdc.201800702] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/25/2019] [Indexed: 11/06/2022]
Abstract
New cyclam derivatives (HOCH2 CH2 CH2 )2 (PhCH2 )2 Cyclam and (HOCH2 CH2 CH2 )2 ( 4 - CF 3 PhCH2 )2 Cyclam, as well as their CuII and FeIII complexes, were synthesized and characterized and their stability in cellular media was assessed. The cytotoxic effect of all compounds was examined on human cervical cancer (HeLa) cells, revealing strong anticancer activity. After 24 h, only complexes with the (HOCH2 CH2 CH2 )2 ( 4 - CF 3 PhCH2 )2 Cyclam ligand are cytotoxic, whereas after incubation for 72 h all compounds show significant antiproliferative effects. Notably, compounds containing 4 - CF 3 PhCH2 pendant arms on the cyclam ring revealed the most activity, with cytotoxicity values up to 12 times higher than those of cisplatin. All metal complexes seem to induce cell death through the formation of reactive oxygen species.
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Affiliation(s)
- Adhan Pilon
- Centro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016, Lisbon, Portugal.,Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisbon, Portugal
| | - Julia Lorenzo
- Institut de Biotecnologia i de Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Sergi Rodriguez-Calado
- Institut de Biotecnologia i de Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Pedro Adão
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisbon, Portugal
| | - Ana M Martins
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisbon, Portugal
| | - Andreia Valente
- Centro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016, Lisbon, Portugal
| | - Luis G Alves
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisbon, Portugal
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17
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Meléndez-Alafort L, Ferro-Flores G, De Nardo L, Bello M, Paiusco M, Negri A, Zorz A, Uzunov N, Esposito J, Rosato A. Internal radiation dose assessment of radiopharmaceuticals prepared with cyclotron-produced99mTc. Med Phys 2019; 46:1437-1446. [DOI: 10.1002/mp.13393] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 12/04/2018] [Accepted: 12/28/2018] [Indexed: 12/28/2022] Open
Affiliation(s)
| | - Guillermina Ferro-Flores
- Laboratorio Nacional de Investigación y Desarrollo de Radiofármacos-CONACyT; Instituto Nacional de Investigaciones Nucleares; Carretera México-Toluca S/N. La Marquesa; Ocoyoacac Estado de México 52750 México
| | - Laura De Nardo
- Department of Physics and Astronomy; University of Padova; Via Marzolo 8 Padova 35131 Italy
| | - Michele Bello
- Department of Physics and Astronomy; University of Padova; Via Marzolo 8 Padova 35131 Italy
| | - Marta Paiusco
- Medical Physics Department; Veneto Institute of Oncology IOV-IRCCS; Via Gattamelata 64 Padova 35138 Italy
| | - Anna Negri
- Medical Physics Department; Veneto Institute of Oncology IOV-IRCCS; Via Gattamelata 64 Padova 35138 Italy
| | - Alessandra Zorz
- Medical Physics Department; Veneto Institute of Oncology IOV-IRCCS; Via Gattamelata 64 Padova 35138 Italy
| | - Nikolay Uzunov
- Faculty of Natural Sciences; University of Shumen; 115 Universitetska str. Shumen 9712 Bulgaria
| | - Juan Esposito
- Legnaro National laboratories; National Institute of Nuclear Physics; Viale della Università 2 Legnaro 35020 Italy
| | - Antonio Rosato
- Veneto Institute of Oncology IOV-IRCCS; Via Gattamelata 64 Padova 35138 Italy
- Department of Surgery, Oncology and Gastroenterology; University of Padova; Via Gattamelata 64 Padova 35138 Italy
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18
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Al Rayyes AH, Assaad T, Ailouti Y. Cyclotron 99mTc Production and Quality Control for Medical Applications. RADIOCHEMISTRY 2019. [DOI: 10.1134/s1066362219010120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Uzunov NM, Melendez-Alafort L, Bello M, Cicoria G, Zagni F, De Nardo L, Selva A, Mou L, Rossi-Alvarez C, Pupillo G, Di Domenico G, Uccelli L, Boschi A, Groppi F, Salvini A, Taibi A, Duatti A, Martini P, Pasquali M, Loriggiola M, Marengo M, Strada L, Manenti S, Rosato A, Esposito J. Radioisotopic purity and imaging properties of cyclotron-produced 99mTc using direct 100Mo(p,2n) reaction. ACTA ACUST UNITED AC 2018; 63:185021. [DOI: 10.1088/1361-6560/aadc88] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Holik HA, Uehara T, Nemoto S, Rokugawa T, Tomizawa Y, Sakuma A, Mizuno Y, Suzuki H, Arano Y. Coordination-Mediated Synthesis of 67Ga-Labeled Purification-Free Trivalent Probes for in Vivo Imaging of Saturable Systems. Bioconjug Chem 2018; 29:2909-2919. [DOI: 10.1021/acs.bioconjchem.8b00337] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Holis A. Holik
- Laboratory of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang KM 21, Sumedang 46363, Indonesia
| | - Tomoya Uehara
- Laboratory of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Soki Nemoto
- Laboratory of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Takemi Rokugawa
- Laboratory of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Yuumi Tomizawa
- Laboratory of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Ayako Sakuma
- Laboratory of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Yuki Mizuno
- Laboratory of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
- Laboratory of Physical Chemistry, Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Hiroyuki Suzuki
- Laboratory of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Yasushi Arano
- Laboratory of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
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21
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Costa MC, Mata LM, Ribeiro NDQ, Santos APN, Oliveira LVN, Vilela RVR, Cardoso VN, Fernandes SOA, Santos DA. A new method for studying cryptococcosis in a murine model using 99mTc-Cryptococcus gattii. Med Mycol 2018; 56:479-484. [PMID: 28992125 DOI: 10.1093/mmy/myx060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 07/13/2017] [Indexed: 11/12/2022] Open
Abstract
Cryptococcus gattii is one of the etiologic agents of cryptococcosis, a systemic mycosis that occurs in healthy and immunosuppressed humans and animals worldwide. Primary pulmonary infection caused by C. gattii is usually followed by fungal dissemination to the central nervous system, resulting in high mortality rates. In this context, animal models of cryptococcosis are useful in the study of fungal pathogenesis and host response against the pathogen, and for testing novel therapeutic options. The most frequently applied method to study fungal dissemination from the lungs to other organs is by culturing tissues, which is not accurate for the detection and quantification of fungal load at early stages of the infection. To overcome this problem, the purpose of this study was to develop a new method for the quantification of Cryptococcus dissemination. One C. gattii strain was efficiently radiolabeled with technetium-99m (99mTc), without affecting viability of the cells. Further, the 99mTc-C. gattii (111 MBq) strain was used to infect mice by intratracheal and intravenous route for biodistribution studies. 99mTc-C. gattii was successfully used in detection of the yeast in the brain of mice 6 hours postinoculation, while the detection using colony forming units was possible only 24 hours postinfection. Our results provided an alternative method that could be applied in further investigations regarding the efficacy of antifungals, fungal virulence, and host-pathogen interactions.
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Affiliation(s)
| | - Lays Murta Mata
- Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia-UFMG
| | | | | | | | - Raquel Virgínia Rocha Vilela
- Laboratório de Microbiologia Clínica, Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia - UFMG
| | - Valbert Nascimento Cardoso
- Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia-UFMG
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22
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Stereo Selective Synthesis, Characterization, and Application of d-Ritalinic Acid as Renal Imaging Agent in Nuclear Medicine. J Pharm Innov 2017. [DOI: 10.1007/s12247-017-9304-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Bone metastases from breast cancer: associations between morphologic CT patterns and glycolytic activity on PET and bone scintigraphy as well as explorative search for influential factors. Ann Nucl Med 2017; 31:719-725. [PMID: 28864931 PMCID: PMC5691120 DOI: 10.1007/s12149-017-1202-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 08/29/2017] [Indexed: 11/28/2022]
Abstract
Background This study aimed to compare the detection of bone metastases from breast cancer on F-18 fluorodeoxyglucose positron emission tomography (FDG-PET) and bone scintigraphy (BS). An explorative search for factors influencing the sensitivity or uptake of BS and FDG-PET was also performed. Methods Eighty-eight patients with bone metastases from breast cancer were eligible for this study. Histological confirmation of bone metastases was obtained in 31 patients. The bone metastases were visually classified into four types based on their computed tomography (CT) appearance: osteoblastic, osteolytic, mixed, and negative. The sensitivity of BS and FDG-PET were obtained regarding CT type, adjuvant therapy, and the primary tumor characteristics. The FDG maximum standardized uptake value (SUVmax) was analyzed. Results The sensitivities of the three modalities (CT, BS, and FDG-PET) were 77, 89, and 94%, respectively. The sensitivity of FDG-PET for the osteoblastic type (69%) was significantly lower than that for the other types (P < 0.001), and the sensitivity of BS for the negative type (70%) was significantly lower than that for the others. Regarding tumor characteristics, the sensitivity of FDG-PET significantly differed between nuclear grade (NG)1 and NG2–3 (P = 0.032). The SUVmax of the osteoblastic type was significantly lower than that of the other types (P = 0.009). The SUVmax of NG1 was also significantly lower than that of NG2–3 (P = 0.011). No significant difference in FDG uptake (SUVmax) was detected between different histological types. Conclusion Although FDG-PET is superior to BS for the detection of bone metastases from breast cancer, this technique has limitations in depicting osteoblastic bone metastases and NG1.
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24
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Vats K, Satpati D, Sharma R, Kumar C, Sarma HD, Dash A. 99m
Tc-labeled NGR-chlorambucil conjugate, 99m
Tc-HYNIC-CLB-c(NGR) for targeted chemotherapy and molecular imaging. J Labelled Comp Radiopharm 2017; 60:431-438. [DOI: 10.1002/jlcr.3522] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/12/2017] [Accepted: 05/19/2017] [Indexed: 01/14/2023]
Affiliation(s)
- Kusum Vats
- Radiopharmaceuticals Division; Bhabha Atomic Research Centre; Mumbai India
| | - Drishty Satpati
- Radiopharmaceuticals Division; Bhabha Atomic Research Centre; Mumbai India
| | - Rohit Sharma
- Radiopharmaceuticals Division; Bhabha Atomic Research Centre; Mumbai India
| | - Chandan Kumar
- Radiopharmaceuticals Division; Bhabha Atomic Research Centre; Mumbai India
| | - Haladhar D. Sarma
- Radiation Biology and Health Science Division; Bhabha Atomic Research Centre; Mumbai India
| | - Ashutosh Dash
- Radiopharmaceuticals Division; Bhabha Atomic Research Centre; Mumbai India
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25
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Simion V, Sobilo J, Clemoncon R, Natkunarajah S, Ezzine S, Abdallah F, Lerondel S, Pichon C, Baril P. Positive radionuclide imaging of miRNA expression using RILES and the human sodium iodide symporter as reporter gene is feasible and supports a protective role of miRNA-23a in response to muscular atrophy. PLoS One 2017; 12:e0177492. [PMID: 28493972 PMCID: PMC5426778 DOI: 10.1371/journal.pone.0177492] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 04/27/2017] [Indexed: 12/18/2022] Open
Abstract
MicroRNAs (miRNAs) are key players in many biological processes and are considered as an emerging class of pharmacology drugs for diagnosis and therapy. However to fully exploit the therapeutic potential of miRNAs, it is becoming crucial to monitor their expression pattern using medical imaging modalities. Recently, we developed a method called RILES, for RNAi-Inducible Luciferase Expression System that relies on an engineered regulatable expression system to switch-ON the expression of the luciferase gene when a miRNA of interest is expressed in cells. Here we investigated whether replacing the luciferase reporter gene with the human sodium iodide symporter (hNIS) reporter gene will be also suited to monitor the expression of miRNAs in a clinical setting context. We provide evidence that radionuclide imaging of miRNA expression using hNIS is feasible although it is not as robust as when the luciferase reporter gene is used. However, under appropriate conditions, we monitored the expression of several miRNAs in cells, in the liver and in the tibialis anterior muscle of mice undergoing muscular atrophy. We demonstrated that radiotracer accumulation in transfected cells correlated with the induction of hNIS and with the expression of miRNAs detected by real time PCR. We established the kinetic of miRNA-23a expression in mice and demonstrated that this miRNA follows a biphasic expression pattern characterized by a loss of expression at a late time point of muscular atrophy. At autopsy, we found an opposite expression pattern between miRNA-23a and one of the main transcriptional target of this miRNA, APAF-1, and as downstream target, Caspase 9. Our results report the first positive monitoring of endogenously expressed miRNAs in a nuclear medicine imaging context and support the development of additional work to establish the potential therapeutic value of miRNA-23 to prevent the damaging effects of muscular atrophy.
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Affiliation(s)
- Viorel Simion
- Centre de Biophysique Moléculaire, CNRS UPR4301, Orléans, France
| | - Julien Sobilo
- PHENOMIN-TAAM-UPS44, CIPA (Centre d'Imagerie du Petit Animal), CNRS Orléans, France
| | - Rudy Clemoncon
- Centre de Biophysique Moléculaire, CNRS UPR4301, Orléans, France
| | - Sharuja Natkunarajah
- PHENOMIN-TAAM-UPS44, CIPA (Centre d'Imagerie du Petit Animal), CNRS Orléans, France
| | - Safia Ezzine
- Centre de Biophysique Moléculaire, CNRS UPR4301, Orléans, France
| | | | - Stephanie Lerondel
- PHENOMIN-TAAM-UPS44, CIPA (Centre d'Imagerie du Petit Animal), CNRS Orléans, France
| | - Chantal Pichon
- Centre de Biophysique Moléculaire, CNRS UPR4301, Orléans, France.,Université d'Orléans, Collégium Sciences et Techniques, Orléans, France
| | - Patrick Baril
- Centre de Biophysique Moléculaire, CNRS UPR4301, Orléans, France.,Université d'Orléans, Collégium Sciences et Techniques, Orléans, France
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26
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Boschi A, Martini P, Uccelli L. 188Re(V) Nitrido Radiopharmaceuticals for Radionuclide Therapy. Pharmaceuticals (Basel) 2017; 10:ph10010012. [PMID: 28106830 PMCID: PMC5374416 DOI: 10.3390/ph10010012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/09/2017] [Accepted: 01/16/2017] [Indexed: 11/27/2022] Open
Abstract
The favorable nuclear properties of rhenium-188 for therapeutic application are described, together with new methods for the preparation of high yield and stable 188Re radiopharmaceuticals characterized by the presence of the nitride rhenium core in their final chemical structure. 188Re is readily available from an 188W/188Re generator system and a parallelism between the general synthetic procedures applied for the preparation of nitride technetium-99m and rhenium-188 theranostics radiopharmaceuticals is reported. Although some differences between the chemical characteristics of the two metallic nitrido fragments are highlighted, it is apparent that the same general procedures developed for the labelling of biologically active molecules with technetium-99m can be applied to rhenium-188 with minor modification. The availability of these chemical strategies, that allow the obtainment, in very high yield and in physiological condition, of 188Re radiopharmaceuticals, gives a new attractive prospective to employ this radionuclide for therapeutic applications.
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Affiliation(s)
- Alessandra Boschi
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy.
| | - Petra Martini
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy.
- Italy and Legnaro National Laboratories, Italian National Institute for Nuclear Physics (LNL-INFN), Legnaro (PD) 35020, Italy.
| | - Licia Uccelli
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy.
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Mion G, Mari C, Da Ros T, Rubbiani R, Gasser G, Gianferrara T. Towards the Synthesis of New Tumor Targeting Photosensitizers for Photodynamic Therapy and Imaging Applications. ChemistrySelect 2017. [DOI: 10.1002/slct.201601960] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Giuliana Mion
- Department of Chemical and Pharmaceutical Sciences; P.le Europa 1 34127 Trieste Italy
| | - Cristina Mari
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 CH-8057 Zurich Switzerland
| | - Tatiana Da Ros
- Department of Chemical and Pharmaceutical Sciences; P.le Europa 1 34127 Trieste Italy
| | - Riccardo Rubbiani
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 CH-8057 Zurich Switzerland
| | - Gilles Gasser
- Chimie ParisTech, PSL Research University; Laboratory for Inorganic Chemical Biology; F-75005 Paris France
| | - Teresa Gianferrara
- Department of Chemical and Pharmaceutical Sciences; P.le Europa 1 34127 Trieste Italy
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Lin J, Qiu L, Lv G, Li K, Wang W, Liu G, Zhao X, Wang S. Synthesis and preliminary biological evaluation of a99mTc-chlorambucil derivative as a potential tumor imaging agent. J Labelled Comp Radiopharm 2016; 60:116-123. [DOI: 10.1002/jlcr.3481] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 10/25/2016] [Accepted: 11/04/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Jianguo Lin
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine; Jiangsu Institute of Nuclear Medicine; Wuxi China
| | - Ling Qiu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine; Jiangsu Institute of Nuclear Medicine; Wuxi China
| | - Gaochao Lv
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine; Jiangsu Institute of Nuclear Medicine; Wuxi China
| | - Ke Li
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine; Jiangsu Institute of Nuclear Medicine; Wuxi China
| | - Wei Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine; Jiangsu Institute of Nuclear Medicine; Wuxi China
| | - Guiqing Liu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine; Jiangsu Institute of Nuclear Medicine; Wuxi China
| | - Xueyu Zhao
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine; Jiangsu Institute of Nuclear Medicine; Wuxi China
| | - Shanshan Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine; Jiangsu Institute of Nuclear Medicine; Wuxi China
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29
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A solvent-extraction module for cyclotron production of high-purity technetium-99m. Appl Radiat Isot 2016; 118:302-307. [DOI: 10.1016/j.apradiso.2016.10.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 10/04/2016] [Indexed: 11/19/2022]
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30
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Ultra-low activities of a common radioisotope for permission-free tracking of a drosophilid fly in its natural habitat. Sci Rep 2016; 6:36506. [PMID: 27812000 PMCID: PMC5095666 DOI: 10.1038/srep36506] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 10/13/2016] [Indexed: 11/24/2022] Open
Abstract
Knowledge of a species’ ecology, including its movement in time and space, is key for many questions in biology and conservation. While numerous tools for tracking larger animals are available, millimetre-sized insects are averse to standard tracking and labelling procedures. Here, we evaluated the applicability of ultra-low, permission-exempt activities of the metastable isomer of the radionuclide Technetium-99 for labelling and field detection of the mountain fly Drosophila nigrosparsa. We demonstrate that an activity of less than 10 MBq is sufficient to label dozens of flies and detect single individuals using standard radiation protection monitors. The methodology presented here is applicable to many small-sized, low-mobility animals as well as independent from light and weather conditions and visual contact with the target organism.
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31
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Ohbayashi Y, Nakai F, Iwasaki A, Ogawa T, Yamamoto Y, Nishiyama Y, Miyake M. The utility of bone scintigraphy in the assessment of mandibular metabolism during long-term bisphosphonate administration. Odontology 2016; 105:382-390. [DOI: 10.1007/s10266-016-0279-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 09/23/2016] [Indexed: 10/20/2022]
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32
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Motaleb MA, Ibrahim IT, Abo Rizq RS, Elzanfaly ES. Preparation, chromatographic evaluation and biodistribution of 99mTc-procainamide as a radiopharmaceutical for heart imaging. RADIOCHIM ACTA 2016. [DOI: 10.1515/ract-2015-2558] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Procainamide (4-amino-N-[2-(diethylamino) ethyl] benzamide) is a sodium channel blocker, which acts as an effective antiarrhythmic agent used in the treatment of a variety of atrial and ventricular arrhythmias. The aim of this study was to prepare 99mTc-procainamide complex, apply different chromatographic techniques for the assay of radiolabeling yield and study its biodistribution as a novel radiopharmaceutical for heart imaging. 99mTc-procainamide was obtained with a maximum labeling yield of 95.76±0.20% via direct labeling method under optimum conditions of 200 μg of procainamide, 300 μL of buffer (carbonate) at pH 11, 30 μg SnCl2·2H2O at room temperature (25°C) for 15 min. In terms of in vitro stability, the complex was stable for 3 h. Chromatographic evaluation using paper chromatography, thin layer chromatography, gel chromatography, and high performance liquid chromatography showed reliable results for measuring the radiochemical yield. Biodistribution study of 99mTc-procainamide showed ratios of heart/lung and heart/liver (6.38±1.50, 2.06±0.31, respectively at 30 min post injection) which was comparable to that of 99mTc-sestamibi (7.4±2.00, 0.97±0.10, respectively at 60 min, P<0.05).
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Affiliation(s)
- M. A. Motaleb
- Labeled Compound Department, Hot Laboratory Center, Atomic Energy Authority, P.O. 13759, Cairo, Egypt
| | - I. T. Ibrahim
- Labeled Compound Department, Hot Laboratory Center, Atomic Energy Authority, P.O. 13759, Cairo, Egypt
| | - R. S. Abo Rizq
- Labeled Compound Department, Hot Laboratory Center, Atomic Energy Authority, P.O. 13759, Cairo, Egypt
| | - E. S. Elzanfaly
- Analytical Department, Faculty of Pharmacy, Cairo University, Egypt
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Mizuno Y, Uehara T, Hanaoka H, Endo Y, Jen CW, Arano Y. Purification-Free Method for Preparing Technetium-99m-Labeled Multivalent Probes for Enhanced in Vivo Imaging of Saturable Systems. J Med Chem 2016; 59:3331-9. [PMID: 26999587 DOI: 10.1021/acs.jmedchem.6b00024] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Metallic radionuclides provide target-specific radiolabeled probes for molecular imaging in radiochemical yields sufficient for administration to subjects without purification. However, unlabeled ligands in the injectate can compete for targeted molecules with radiolabeled probes, which eventually necessitates postlabeling purification. Herein we describe a "1 to 3" design to circumvent the issue by taking advantage of inherent coordination properties of technetium-99m ((99m)Tc). A monovalent RGD ligand possessing an isonitrile as a coordinating moiety (CN-RGD) was reacted with [(99m)Tc(CO)3(OH2)3](+) to prepare [(99m)Tc(CO)3(CN-RGD)3](+) in over 95% radiochemical yields. This complex exhibited higher integrin αvβ3 binding affinity than its unlabeled monovalent ligand, primarily due to its multivalency. This compound visualized a murine tumor without removing unlabeled ligands, while a (99m)Tc-labeled monovalent probe derived from a monovalent ligand could not. The metal coordination-mediated synthesis of radiolabeled multivalent probes thereby can be a useful approach for preparing ready-to-use target-specific probes labeled with (99m)Tc and other metallic radionuclides of interest.
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Affiliation(s)
- Yuki Mizuno
- Department of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675 Japan
| | - Tomoya Uehara
- Department of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675 Japan
| | - Hirofumi Hanaoka
- Department of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675 Japan
| | - Yota Endo
- Department of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675 Japan
| | - Chun-Wei Jen
- Department of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675 Japan
| | - Yasushi Arano
- Department of Molecular Imaging and Radiotherapy, Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675 Japan
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34
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Diagnostic performance of 18F-fluorodeoxyglucose PET/CT and bone scintigraphy in breast cancer patients with suspected bone metastasis. Breast Cancer 2015; 23:662-7. [DOI: 10.1007/s12282-015-0621-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 05/27/2015] [Indexed: 12/18/2022]
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35
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Klenc J, Lipowska M, Taylor AT. Identification of lead compounds for (99m)Tc and (18)F GPR91 radiotracers. Bioorg Med Chem Lett 2015; 25:2335-9. [PMID: 25908514 PMCID: PMC4433761 DOI: 10.1016/j.bmcl.2015.04.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/01/2015] [Accepted: 04/08/2015] [Indexed: 10/23/2022]
Abstract
To develop the first radiotracer targeting GPR91, a cell membrane-bound receptor that modulates the cellular response to hyperglycemia and hypoxia, we designed and prepared a small series of compounds based on a published series of 1,8-naphthyridines with high affinity to GPR91. Our approach provides a mechanism to incorporate radioactive atoms ((99m)Tc and (18)F) into the GPR91 pharmacophore as the final synthetic step. Pharmacological assays confirmed lead compounds for (99m)Tc and (18)F GPR91 radiotracers within the series.
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Affiliation(s)
- Jeffrey Klenc
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA 30322, USA.
| | - Malgorzata Lipowska
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA 30322, USA
| | - Andrew T Taylor
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA 30322, USA
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36
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Purification and biological evaluation of radioiodinated clozapine as possible brain imaging agent. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-014-3894-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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37
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Bokhari TH, Akbar MU, Roohi S, Hina S, Sohaib M, Rizvi FA. Synthesis, characterization and biological evaluation of 99mTc-labeled Mitomycin C. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3743-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Pharmaceutical grade sodium [99mTc] pertechnetate from low specific activity 99Mo using an automated 99Mo/99mTc-TCM-autosolex generator. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3211-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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Yang Y, Bhandari KH, Panahifar A, Doschak MR. Synthesis, characterization and biodistribution studies of (125)I-radioiodinated di-PEGylated bone targeting salmon calcitonin analogue in healthy rats. Pharm Res 2013; 31:1146-57. [PMID: 24357414 DOI: 10.1007/s11095-013-1237-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 10/20/2013] [Indexed: 10/25/2022]
Abstract
PURPOSE The objective of this study was to prepare a bisphosphonate (BP) mediated bone targeting di-PEGylated salmon calcitonin analogue sCT-2(PEG-BP) as a novel bone targeting pharmaceutical. METHODS HPLC was used for isolation of sCT-2(PEG-BP) from the reaction mixture, followed by determination of possible PEGylation sites by trypsin digestion. Stability of the compound over time, bone mineral affinity using hydroxyapatite, and biodistribution in normal rats after radiolabeling of sCT-2(PEG-BP) or control sCT with (125)I was evaluated. RESULTS PEGylated sCT analogues were synthesized, and sCT-2(PEG-BP) was isolated by HPLC and confirmed by MALDI-TOF and ICP-MS. MALDI-TOF analysis of trypsinized fragments suggested Cys(1) (or Lys(11)) and Lys(18) to be the two PEGylation sites. Bone mineral affinity test showed sCT-2(PEG-BP) or (125)I-sCT-2(PEG-BP) exhibited significantly increased bone mineral affinity over sCT or (125)I-sCT, respectively. sCT-2(PEG-BP) remained stable for at least 1 month. In vivo biodistribution study showed significantly increased bone retention and prolonged plasma circulation time for sCT-2(PEG-BP) compared to the control sCT. CONCLUSION Those results support sCT-2(PEG-BP) as a promising new drug candidate for the treatment of resorptive and/or maladaptive bone conditions, such as Osteoporosis, Osteoarthritis, Rheumatoid Arthritis, Paget's disease and bone cancers.
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Affiliation(s)
- Yang Yang
- Pharmaceutical Orthopaedic Research Laboratory Faculty of Pharmacy & Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, T6G 2E1, Canada
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40
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Wolfe F, Bolster MB, O'Connor CM, Michaud K, Lyles KW, Colón-Emeric CS. Bisphosphonate use is associated with reduced risk of myocardial infarction in patients with rheumatoid arthritis. J Bone Miner Res 2013; 28:984-91. [PMID: 23074131 PMCID: PMC3827632 DOI: 10.1002/jbmr.1792] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 09/18/2012] [Accepted: 10/01/2012] [Indexed: 12/19/2022]
Abstract
Bisphosphonates have been shown to reduce mortality in patients with osteoporotic fractures, but the mechanism is unclear. Bisphosphonates have immunomodulatory effects that may influence the development of vascular disease. We sought to determine if bisphosphonate use is associated with a reduced risk of myocardial infarction (MI) in a rheumatoid arthritis (RA) population with high prevalence of bisphosphonate use and vascular disease. Adult patients with RA enrolled in the National Data Bank for Rheumatic Diseases, a longitudinal study of RA patients enrolled continuously from U.S. rheumatology practices between 2003 and 2011, were included in the analysis (n = 19,281). Patients completed questionnaires every 6 months. including questions on medication use, demographic information, clinical information, and health status. MIs were confirmed by a central adjudicator. Among the 5689 patients who were treated with bisphosphonates at some time during the study period, the risk of MI while on bisphosphonate compared to when not on bisphosphonate was 0.56 (95% confidence interval [CI], 0.37-0.86; p < 0.01) after adjustment for multiple confounders. In models including all 19,281 treated and untreated patients, the adjusted risk of first MI was 0.72 (95% CI, 0.54-0.96; p = 0.02) and of all MIs it was 0.72 (95% CI, 0.53-0.97; p = 0.03) in bisphosphonate users compared to nonusers. This finding suggests a potential mechanism for the mortality reduction observed with bisphosphonate medications.
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Affiliation(s)
- Frederick Wolfe
- National Data Bank for Rheumatic Diseases and University of Kansas School of Medicine, Wichita, KS, USA
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41
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Pereira NA, Lemos A, Serra AC, Pinho e Melo TM. Functionalization of dipyrromethanes via hetero-Diels–Alder reaction with azo- and nitrosoalkenes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.01.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Rong J, Wang S, Ding Q, Yun M, Zheng Z, Ye S. Comparison of 18 FDG PET-CT and bone scintigraphy for detection of bone metastases in breast cancer patients. A meta-analysis. Surg Oncol 2013; 22:86-91. [PMID: 23726506 DOI: 10.1016/j.suronc.2013.01.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 01/05/2013] [Accepted: 01/10/2013] [Indexed: 01/08/2023]
Abstract
BACKGROUND We performed a meta-analysis to compare the accuracy of (18)FDG PET-CT and bone scintigraphy for the detection of bone metastases in breast cancer patients. METHODS Studies about (18)FDG PET-CT and bone scintigraphy for the detection of bone metastases in breast cancer patients were systematically searched in the MEDLINE and EMBASE databases. We calculated sensitivities, specificities, diagnostic odds ratios, and likelihood ratios, and constructed summary receiver operating characteristic curves using bivariate regression models for (18)FDG PET-CT and bone scintigraphy, respectively. RESULTS Across 7 studies (668 patients), sensitivity and specificity of PET-CT 0.93 (95% confidence interval [CI] = 0.82-0.98) and 0.99 (95% CI = 0.95-1.00), and of bone scintigraphy were 0.81 (95% CI = 0.58-0.93) and 0.96 (95%CI = 0.76-1.00), respectively. Area under curves for PET-CT and bone scintigraphy was 0.98 (95% CI = 0.98-1.00) and 0.94 (95% CI = 0.92-0.96), respectively. CONCLUSIONS Compared with bone scintigraphy, (18)FDG PET-CT may higher sensitivity and accuracy for detection of bone metastases in breast cancer patients.
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Affiliation(s)
- Jian Rong
- Department of Anesthesiology, The First Affiliated Hospital of Sun Yat-sen University, Guanghzou, PR China
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43
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Uçar E, Teksöz S, Íçhedef ÇD, Kılçar AY, Ünak P. Effect of rosemary (Rosmarinus officinalis) extract on the biodistribution of 99mTc sulphur colloid and on the radiolabeled blood constituents. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2013. [DOI: 10.1590/s0102-695x2012005000148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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44
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Pathuri G, Hedrick AF, Disch BC, Ihnat MA, Awasthi V, Gali H. Synthesis and biodistribution studies of technetium-99m-labeled aminopeptidase N inhibitor conjugates. Bioorg Med Chem Lett 2012; 22:4567-70. [PMID: 22727671 DOI: 10.1016/j.bmcl.2012.05.106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 05/18/2012] [Accepted: 05/29/2012] [Indexed: 11/30/2022]
Abstract
Probestin is a potent aminopeptidase N (APN) inhibitor. Four probestin conjugates containing a tripeptide chelator (N(3)S) and a PEG(2) linker were synthesized and radiolabeled with Tc-99m. The number of -COOH groups on the chelator was altered to increase the excretion of the radiotracer from blood stream via the renal-urinary pathway and to decrease its hepatobiliary uptake. Biodistribution of the radiolabeled conjugates was evaluated in healthy CF-1™ mice at 1h post-injection. The results revealed that the Tc-99m labeled probestin conjugate preferentially (>85% injected dose) excreted via the renal route when an aspartic acid residue was added to the linker (conjugate 4). These results suggest that the pharmacokinetic properties of probestin-based APN-targeted agents could be optimized by adding an appropriate amino acid residue in between the linker and the payload.
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Affiliation(s)
- Gopal Pathuri
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73117, USA
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45
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Synthesis, radiolabeling, biodistribution and fluorescent imaging of histidine-coupled hematoporphyrin. Nucl Med Biol 2012; 39:579-85. [DOI: 10.1016/j.nucmedbio.2011.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 10/08/2011] [Accepted: 10/10/2011] [Indexed: 11/18/2022]
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46
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Boschi A, Cazzola E, Uccelli L, Pasquali M, Ferretti V, Bertolasi V, Duatti A. Rhenium(V) and Technetium(V) Nitrido Complexes with Mixed Tridentate π-Donor and Monodentate π-Acceptor Ligands. Inorg Chem 2012; 51:3130-7. [DOI: 10.1021/ic202605z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Alessandra Boschi
- Laboratory
of Nuclear Medicine, Department of Radiological Sciences and ‡Department of
Chemistry and Centre for Structural Diffractometry,University of Ferrara, 44121 Ferrara, Italy
| | - Emiliano Cazzola
- Laboratory
of Nuclear Medicine, Department of Radiological Sciences and ‡Department of
Chemistry and Centre for Structural Diffractometry,University of Ferrara, 44121 Ferrara, Italy
| | - Licia Uccelli
- Laboratory
of Nuclear Medicine, Department of Radiological Sciences and ‡Department of
Chemistry and Centre for Structural Diffractometry,University of Ferrara, 44121 Ferrara, Italy
| | - Micol Pasquali
- Laboratory
of Nuclear Medicine, Department of Radiological Sciences and ‡Department of
Chemistry and Centre for Structural Diffractometry,University of Ferrara, 44121 Ferrara, Italy
| | - Valeria Ferretti
- Laboratory
of Nuclear Medicine, Department of Radiological Sciences and ‡Department of
Chemistry and Centre for Structural Diffractometry,University of Ferrara, 44121 Ferrara, Italy
| | - Valerio Bertolasi
- Laboratory
of Nuclear Medicine, Department of Radiological Sciences and ‡Department of
Chemistry and Centre for Structural Diffractometry,University of Ferrara, 44121 Ferrara, Italy
| | - Adriano Duatti
- Laboratory
of Nuclear Medicine, Department of Radiological Sciences and ‡Department of
Chemistry and Centre for Structural Diffractometry,University of Ferrara, 44121 Ferrara, Italy
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47
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Chakravarty R, Sarkar S, Venkatesh M, Dash A. An electrochemical procedure to concentrate 99mTc availed from a zirconium [99Mo] molybdate gel generator. Appl Radiat Isot 2012; 70:375-9. [DOI: 10.1016/j.apradiso.2011.09.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Accepted: 09/20/2011] [Indexed: 11/16/2022]
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48
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Kimura H, Mori D, Harada N, Ono M, Ohmomo Y, Kajimoto T, Kawashima H, Saji H. Microwave-Assisted Synthesis of Organometallic Complexes of 99mTc(CO)3 and Re(CO)3: Its Application to Radiopharmaceuticals. Chem Pharm Bull (Tokyo) 2012; 60:79-85. [DOI: 10.1248/cpb.60.79] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hiroyuki Kimura
- Graduate School of Pharmaceutical Sciences, Kyoto University
| | - Daisuke Mori
- Graduate School of Pharmaceutical Sciences, Kyoto University
| | - Naoya Harada
- Graduate School of Pharmaceutical Sciences, Kyoto University
| | - Masahiro Ono
- Graduate School of Pharmaceutical Sciences, Kyoto University
| | | | | | | | - Hideo Saji
- Graduate School of Pharmaceutical Sciences, Kyoto University
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Pathuri G, Hedrick AF, Disch BC, Doan JT, Ihnat MA, Awasthi V, Gali H. Synthesis and evaluation of novel Tc-99m labeled probestin conjugates for imaging APN/CD13 expression in vivo. Bioconjug Chem 2011; 23:115-24. [PMID: 22148582 DOI: 10.1021/bc200546b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The enzyme aminopeptidase N (APN, also known as CD13) is known to play an important role in tumor proliferation, attachment, angiogenesis, and tumor invasion. In this study, we hypothesized that a radiolabeled high affinity APN inhibitor could be potentially useful for imaging APN expression in vivo. Here, we report synthesis, radiolabeling, and biological evaluation of new probestin conjugates containing a tripeptide, N,N-dimethylglycyl-l-lysinyl-l-cysteinylamide (N(3)S), chelator. New probestin conjugates were synthesized by solid-phase peptide synthesis method, purified by reversed-phase HPLC, and characterized by electrospray mass spectrometry. The conjugates were complexed with Re(V) and (99m)Tc(V) by transmetalation using corresponding Re(V) or (99m)Tc(V) gluconate synthon. The mass spectral analyses of ReO-N(3)S-Probestin conjugates were consistent with the formation of neutral Re(V)O-N(3)S complexes. Initial biological activity of ReO-N(3)S-Probestin conjugates determined by performing an in vitro APN enzyme assay using intact HT-1080 cells demonstrated higher inhibition of APN enzyme activity than bestatin. In vivo biodistribution and whole body planar imaging studies of (99m)TcO-N(3)S-PEG(2)-Probestin performed in nude mice xenografted with human fibrosarcoma tumors derived from HT-1080 cells demonstrated a tumor uptake value of 2.88 ± 0.64%ID/g with tumor-to-blood and tumor-to-muscle ratios of 4.8 and 5.3, respectively, at 1 h postinjection (p.i.). Tumors were clearly visible in whole body planar image obtained at 1 h p.i., but not when the APN was competitively blocked with a coinjection of excess nonradioactive ReO-N(3)S-PEG(2)-Probestin conjugate. These results demonstrate the feasibility of using high affinity APN inhibitor conjugates as targeting vectors for in vivo targeting of APN.
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Affiliation(s)
- Gopal Pathuri
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of Oklahoma Health Sciences Center, 1110 N. Stonewall Avenue, Oklahoma City, OK 73117, United States
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Ono M, Ohgami M, Haratake M, Saji H, Nakayama M. A novel bifunctional chelating agent based on bis(hydroxamamide) for 99mTc labeling of polypeptides. J Labelled Comp Radiopharm 2011. [DOI: 10.1002/jlcr.1954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Masatsugu Ohgami
- Graduate School of Biomedical Sciences; Nagasaki University; 1-14 Bunkyo-machi; Nagasaki; 852-8521; Japan
| | - Mamoru Haratake
- Graduate School of Biomedical Sciences; Nagasaki University; 1-14 Bunkyo-machi; Nagasaki; 852-8521; Japan
| | - Hideo Saji
- Graduate School of Pharmaceutical Sciences; Kyoto University; 46-29 Yoshida Shimoadachi-cho; Sakyo-ku; Kyoto; 606-8501; Japan
| | - Morio Nakayama
- Graduate School of Biomedical Sciences; Nagasaki University; 1-14 Bunkyo-machi; Nagasaki; 852-8521; Japan
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