1
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Rashid ZA, Bardaweel SK. Novel Matrix Metalloproteinase-9 (MMP-9) Inhibitors in Cancer Treatment. Int J Mol Sci 2023; 24:12133. [PMID: 37569509 PMCID: PMC10418771 DOI: 10.3390/ijms241512133] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Matrix metalloproteinases (MMPs) belong to a family of zinc-dependent proteolytic metalloenzymes. MMP-9, a member of the gelatinase B family, is characterized as one of the most intricate MMPs. The crucial involvement of MMP-9 in extracellular matrix (ECM) remodeling underscores its significant correlation with each stage of cancer pathogenesis and progression. The design and synthesis of MMP-9 inhibitors is a potentially attractive research area. Unfortunately, to date, there is no effective MMP-9 inhibitor that passes the clinical trials and is approved by the FDA. This review primarily focuses on exploring the diverse strategies employed in the design and advancement of MMP-9 inhibitors, along with their anticancer effects and selectivity. To illuminate the essential structural characteristics necessary for the future design of novel MMP-9 inhibitors, the current narrative review highlights several recently discovered MMP-9 inhibitors exhibiting notable selectivity and potency.
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Affiliation(s)
| | - Sanaa K. Bardaweel
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Jordan, Amman 11942, Jordan
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2
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van der Heide CD, Dalm SU. Radionuclide imaging and therapy directed towards the tumor microenvironment: a multi-cancer approach for personalized medicine. Eur J Nucl Med Mol Imaging 2022; 49:4616-4641. [PMID: 35788730 PMCID: PMC9606105 DOI: 10.1007/s00259-022-05870-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/09/2022] [Indexed: 12/19/2022]
Abstract
Targeted radionuclide theranostics is becoming more and more prominent in clinical oncology. Currently, most nuclear medicine compounds researched for cancer theranostics are directed towards targets expressed in only a small subset of cancer types, limiting clinical applicability. The identification of cancer-specific targets that are (more) universally expressed will allow more cancer patients to benefit from these personalized nuclear medicine–based interventions. A tumor is not merely a collection of cancer cells, it also comprises supporting stromal cells embedded in an altered extracellular matrix (ECM), together forming the tumor microenvironment (TME). Since the TME is less genetically unstable than cancer cells, and TME phenotypes can be shared between cancer types, it offers targets that are more universally expressed. The TME is characterized by the presence of altered processes such as hypoxia, acidity, and increased metabolism. Next to the ECM, the TME consists of cancer-associated fibroblasts (CAFs), macrophages, endothelial cells forming the neo-vasculature, immune cells, and cancer-associated adipocytes (CAAs). Radioligands directed at the altered processes, the ECM, and the cellular components of the TME have been developed and evaluated in preclinical and clinical studies for targeted radionuclide imaging and/or therapy. In this review, we provide an overview of the TME targets and their corresponding radioligands. In addition, we discuss what developments are needed to further explore the TME as a target for radionuclide theranostics, with the hopes of stimulating the development of novel TME radioligands with multi-cancer, or in some cases even pan-cancer, application.
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Affiliation(s)
| | - Simone U Dalm
- Department of Radiology & Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands.
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3
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Choi H, Oh Y. Effects of protecting group and counter‐anion on fluorination, bromination, and intramolecular cyclization of phenethylamine diaryliodonium salts: Quantum chemical analysis. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hyoju Choi
- Department of Applied Chemistry Kyung Hee University Yongin South Korea
| | - Young‐Ho Oh
- Department of Applied Chemistry Kyung Hee University Yongin South Korea
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4
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Oh Y, Choi H, Lee S, Lee S. Toward the Robust Synthesis of [
18
F]F‐DOPA: Quantum Chemical Analysis of S
N
Ar Cold Fluorination of Diaryl Iodonium Salt by
19
F
−. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.11978] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Young‐Ho Oh
- Department of Applied ChemistryKyung Hee University Seoul 17140 Republic of Korea
| | - Hyoju Choi
- Department of Applied ChemistryKyung Hee University Seoul 17140 Republic of Korea
| | - Sung‐Sik Lee
- Department of Applied ChemistryKyung Hee University Seoul 17140 Republic of Korea
| | - Sungyul Lee
- Department of Applied ChemistryKyung Hee University Seoul 17140 Republic of Korea
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5
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Mondal S, Adhikari N, Banerjee S, Amin SA, Jha T. Matrix metalloproteinase-9 (MMP-9) and its inhibitors in cancer: A minireview. Eur J Med Chem 2020; 194:112260. [PMID: 32224379 DOI: 10.1016/j.ejmech.2020.112260] [Citation(s) in RCA: 238] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/28/2020] [Accepted: 03/18/2020] [Indexed: 12/15/2022]
Abstract
Matrix metalloproteinases (MMPs) are zinc dependent proteolytic metalloenzyme. MMP-9 is one of the most complex forms of matrix metalloproteinases. MMP-9 has the ability to degrade the extracellular matrix (ECM) components and has important role in the pathophysiological functions. Overexpression and dysregulation of MMP-9 is associated with various diseases. Thus, regulation and inhibition of MMP-9 is an important therapeutic approach for combating various diseases including cancer. Inhibitors of MMP-9 can be used as anticancer agents. Till date no selective MMP-9 inhibitors passed the clinical trials. In this review the structure, activation, function and inhibitors of MMP-9 are mainly focused. Some highly active and/or selective MMP-9 inhibitors have been discussed which may be helpful to explore the structural significance of MMP-9 inhibitors. This study may be useful to design new potent and selective MMP-9 inhibitors against cancer in future.
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Affiliation(s)
- Subha Mondal
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, P. O. Box 17020, Jadavpur University, Kolkata, 700032, India
| | - Nilanjan Adhikari
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, P. O. Box 17020, Jadavpur University, Kolkata, 700032, India
| | - Suvankar Banerjee
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, P. O. Box 17020, Jadavpur University, Kolkata, 700032, India
| | - Sk Abdul Amin
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, P. O. Box 17020, Jadavpur University, Kolkata, 700032, India
| | - Tarun Jha
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, P. O. Box 17020, Jadavpur University, Kolkata, 700032, India.
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6
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Hariono M, Nuwarda RF, Yusuf M, Rollando R, Jenie RI, Al-Najjar B, Julianus J, Putra KC, Nugroho ES, Wisnumurti YK, Dewa SP, Jati BW, Tiara R, Ramadani RD, Qodria L, Wahab HA. Arylamide as Potential Selective Inhibitor for Matrix Metalloproteinase 9 (MMP9): Design, Synthesis, Biological Evaluation, and Molecular Modeling. J Chem Inf Model 2019; 60:349-359. [PMID: 31825614 DOI: 10.1021/acs.jcim.9b00630] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Previous studies have reported that compounds bearing an arylamide linked to a heterocyclic planar ring have successfully inhibited the hemopexin-like domain (PEX9) of matrix metalloproteinase 9 (MMP9). PEX9 has been suggested to be more selectively targeted than MMP9's catalytic domain in a degrading extracellular matrix under some pathologic conditions, especially in cancer. In this study, we aim to synthesize and evaluate 10 arylamide compounds as MMP9 inhibitors through an enzymatic assay as well as a cellular assay. The mechanism of inhibition for the most active compounds was investigated via molecular dynamics simulation (MD). Molecular docking was performed using AutoDock4.0 with PEX9 as the protein model to predict the binding of the designed compounds. The synthesis was carried out by reacting aniline derivatives with 3-bromopropanoyl chloride using pyridine as the catalyst at room temperature. The MMP9 assay was conducted using the FRET-based MMP9 kits protocol and gelatin zymography assay. The cytotoxicity assay was done using the MTT method, and the MD simulation was performed using AMBER16. Assay on MMP9 demonstrated activities of three compounds (2, 7, and 9) with more than 50% inhibition. Further inhibition on MMP9 expressed by 4T1 showed that two compounds (7 and 9) inhibited its gelatinolytic activity more than 50%. The cytotoxicity assay against 4T1 cells results in the inhibition of the cell growth with an EC50 of 125 μM and 132 μM for 7 and 9, respectively. The MD simulation explained a stable interaction of 7 and 9 in PEX9 at 100 ns with a free energy of binding of -8.03 kcal/mol and -6.41 kcal/mol, respectively. Arylamides have potential effects as selective MMP9 inhibitors in inhibiting breast cancer cell progression.
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Affiliation(s)
- Maywan Hariono
- Faculty of Pharmacy , Sanata Dharma University , Depok, Sleman 55282 , Yogyakarta , Indonesia
| | - Rina F Nuwarda
- Faculty of Pharmacy , Padjadjaran University , Jatinangor, Sumedang 45363 , West Java , Indonesia
| | - Muhammad Yusuf
- Chemistry Department, Faculty of Mathematics and Natural Sciences , Padjadjaran University , Jatinangor, Sumedang 45363 , West Java , Indonesia
| | - Rollando Rollando
- Pharmacy Program, Faculty of Science and Technology , Ma Chung University , Malang 65151 , Indonesia
| | - Riris I Jenie
- Cancer Chemoprevention Research Center, Faculty of Pharmacy , Gadjah Mada University , Sekip Utara 55281 , Yogyakarta , Indonesia
| | - Belal Al-Najjar
- Faculty of Pharmacy and Medical Sciences , AlAhliyya Amman University , Amman 19328 , Jordan
| | - Jeffry Julianus
- Faculty of Pharmacy , Sanata Dharma University , Depok, Sleman 55282 , Yogyakarta , Indonesia
| | - Kevin C Putra
- Faculty of Pharmacy , Sanata Dharma University , Depok, Sleman 55282 , Yogyakarta , Indonesia
| | - Ervan S Nugroho
- Faculty of Pharmacy , Sanata Dharma University , Depok, Sleman 55282 , Yogyakarta , Indonesia
| | - Yohanes K Wisnumurti
- Faculty of Pharmacy , Sanata Dharma University , Depok, Sleman 55282 , Yogyakarta , Indonesia
| | - Sangga P Dewa
- Faculty of Pharmacy , Sanata Dharma University , Depok, Sleman 55282 , Yogyakarta , Indonesia
| | - Benedictus W Jati
- Faculty of Pharmacy , Sanata Dharma University , Depok, Sleman 55282 , Yogyakarta , Indonesia
| | - Reynaldo Tiara
- Faculty of Pharmacy , Sanata Dharma University , Depok, Sleman 55282 , Yogyakarta , Indonesia
| | - Ratna D Ramadani
- Cancer Chemoprevention Research Center, Faculty of Pharmacy , Gadjah Mada University , Sekip Utara 55281 , Yogyakarta , Indonesia
| | - Lailatul Qodria
- Cancer Chemoprevention Research Center, Faculty of Pharmacy , Gadjah Mada University , Sekip Utara 55281 , Yogyakarta , Indonesia
| | - Habibah A Wahab
- Pharmaceutical Technology Department, School of Pharmaceutical Sciences and USM-RIKEN Centre for Ageing Science (URICAS) , Universiti Sains Malaysia , 11800 Minden , Pulau Pinang , Malaysia
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7
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Jang KS, Lee SS, Oh YH, Lee SH, Kim SE, Kim DW, Lee BC, Lee S, Raffel DM. Control of reactivity and selectivity of guanidinyliodonium salts toward 18F-Labeling by monitoring of protecting groups: Experiment and theory. J Fluor Chem 2019. [DOI: 10.1016/j.jfluchem.2019.109387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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8
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Molecular Imaging Probes Based on Matrix Metalloproteinase Inhibitors (MMPIs). Molecules 2019; 24:molecules24162982. [PMID: 31426440 PMCID: PMC6719134 DOI: 10.3390/molecules24162982] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 12/12/2022] Open
Abstract
Matrix metalloproteinases (MMPs) are a family of zinc- and calcium-dependent endopeptidases which are secreted or anchored in the cell membrane and are capable of degrading the multiple components of the extracellular matrix (ECM). MMPs are frequently overexpressed or highly activated in numerous human diseases. Owing to the important role of MMPs in human diseases, many MMP inhibitors (MMPIs) have been developed as novel therapeutics, and some of them have entered clinical trials. However, so far, only one MMPI (doxycycline) has been approved by the FDA. Therefore, the evaluation of the activity of a specific subset of MMPs in human diseases using clinically relevant imaging techniques would be a powerful tool for the early diagnosis and assessment of the efficacy of therapy. In recent years, numerous MMPIs labeled imaging agents have emerged. This article begins by providing an overview of the MMP subfamily and its structure and function. The latest advances in the design of subtype selective MMPIs and their biological evaluation are then summarized. Subsequently, the potential use of MMPI-labeled diagnostic agents in clinical imaging techniques are discussed, including positron emission tomography (PET), single-photon emission computed tomography (SPECT) and optical imaging (OI). Finally, this article concludes with future perspectives and clinical utility.
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9
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Kwon YD, Son J, Chun JH. Chemoselective Radiosyntheses of Electron-Rich [18F]Fluoroarenes from Aryl(2,4,6-trimethoxyphenyl)iodonium Tosylates. J Org Chem 2019; 84:3678-3686. [DOI: 10.1021/acs.joc.9b00019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Young-Do Kwon
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jeongmin Son
- Department of Nuclear Medicine, Severance Hospital, Yonsei University Health System, Seoul 03722, Republic of Korea
| | - Joong-Hyun Chun
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
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10
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Kiugel M, Hellberg S, Käkelä M, Liljenbäck H, Saanijoki T, Li XG, Tuomela J, Knuuti J, Saraste A, Roivainen A. Evaluation of [ 68Ga]Ga-DOTA-TCTP-1 for the Detection of Metalloproteinase 2/9 Expression in Mouse Atherosclerotic Plaques. Molecules 2018; 23:molecules23123168. [PMID: 30513758 PMCID: PMC6321344 DOI: 10.3390/molecules23123168] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 11/29/2018] [Indexed: 12/30/2022] Open
Abstract
Background: The expression of matrix metalloproteinases 2/9 (MMP-2/9) has been implicated in arterial remodeling and inflammation in atherosclerosis. We evaluated a gallium-68 labeled peptide for the detection of MMP-2/9 in atherosclerotic mouse aorta. Methods: We studied sixteen low-density lipoprotein receptor deficient mice (LDLR-/-ApoB100/100) kept on a Western-type diet. Distribution of intravenously-injected MMP-2/9-targeting peptide, [68Ga]Ga-DOTA-TCTP-1, was studied by combined positron emission tomography (PET) and contrast-enhanced computed tomography (CT). At 60 min post-injection, aortas were cut into cryosections for autoradiography analysis of tracer uptake, histology, and immunohistochemistry. Zymography was used to assess MMP-2/9 activation and pre-treatment with MMP-2/9 inhibitor to assess the specificity of tracer uptake. Results: Tracer uptake was not visible by in vivo PET/CT in the atherosclerotic aorta, but ex vivo autoradiography revealed 1.8 ± 0.34 times higher tracer uptake in atherosclerotic plaques than in normal vessel wall (p = 0.0029). Tracer uptake in plaques correlated strongly with the quantity of Mac-3-positive macrophages (R = 0.91, p < 0.001), but weakly with MMP-9 staining (R = 0.40, p = 0.099). Zymography showed MMP-2 activation in the aorta, and pre-treatment with MMP-2/9 inhibitor decreased tracer uptake by 55% (p = 0.0020). Conclusions: The MMP-2/9-targeting [68Ga]Ga-DOTA-TCTP-1 shows specific uptake in inflamed atherosclerotic lesions; however, a low target-to-background ratio precluded in vivo vascular imaging. Our results suggest, that the affinity of gelatinase imaging probes should be steered towards activated MMP-2, to reduce the interference of circulating enzymes on the target visualization in vivo.
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Affiliation(s)
- Max Kiugel
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland.
| | - Sanna Hellberg
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland.
| | - Meeri Käkelä
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland.
| | - Heidi Liljenbäck
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland.
- Turku Center for Disease Modeling, University of Turku, FI-20520 Turku, Finland.
| | - Tiina Saanijoki
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland.
| | - Xiang-Guo Li
- Turku PET Centre, Åbo Akademi University, FI-20520 Turku, Finland.
| | - Johanna Tuomela
- Department of Cell Biology and Anatomy, University of Turku, FI-20520 Turku, Finland.
| | - Juhani Knuuti
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland.
- Turku PET Centre, Turku University Hospital, FI-20520 Turku, Finland.
| | - Antti Saraste
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland.
- Turku PET Centre, Turku University Hospital, FI-20520 Turku, Finland.
- Heart Center, Turku University Hospital, FI-20520 Turku, Finland.
- Institute of Clinical Medicine, University of Turku, FI-20520 Turku, Finland.
| | - Anne Roivainen
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland.
- Turku Center for Disease Modeling, University of Turku, FI-20520 Turku, Finland.
- Turku PET Centre, Turku University Hospital, FI-20520 Turku, Finland.
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11
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Hariono M, Yuliani SH, Istyastono EP, Riswanto FD, Adhipandito CF. Matrix metalloproteinase 9 (MMP9) in wound healing of diabetic foot ulcer: Molecular target and structure-based drug design. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.wndm.2018.05.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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12
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Abstract
Hydrolytic enzymes are a large class of biological catalysts that play a vital role in a plethora of critical biochemical processes required to maintain human health. However, the expression and/or activity of these important enzymes can change in many different diseases and therefore represent exciting targets for the development of positron emission tomography (PET) and single-photon emission computed tomography (SPECT) radiotracers. This review focuses on recently reported radiolabeled substrates, reversible inhibitors, and irreversible inhibitors investigated as PET and SPECT tracers for imaging hydrolytic enzymes. By learning from the most successful examples of tracer development for hydrolytic enzymes, it appears that an early focus on careful enzyme kinetics and cell-based studies are key factors for identifying potentially useful new molecular imaging agents.
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Affiliation(s)
- Brian P Rempel
- 1 Department of Science, Augustana Faculty, University of Alberta, Edmonton, Alberta, Canada
| | - Eric W Price
- 2 Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Christopher P Phenix
- 2 Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,3 Biomarker Discovery, Thunder Bay Regional Health Research Institute, Thunder Bay, Ontario, Canada
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13
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Pike VW. Hypervalent aryliodine compounds as precursors for radiofluorination. J Labelled Comp Radiopharm 2018; 61:196-227. [PMID: 28981159 PMCID: PMC10081107 DOI: 10.1002/jlcr.3570] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 09/27/2017] [Indexed: 12/12/2022]
Abstract
Over the last 2 decades or so, hypervalent iodine compounds, such as diaryliodonium salts and aryliodonium ylides, have emerged as useful precursors for labeling homoarenes and heteroarenes with no-carrier-added cyclotron-produced [18 F]fluoride ion (t1/2 = 109.8 min). They permit rapid and effective radiofluorination at electron-rich as well as electron-deficient aryl rings, and often with unrestricted choice of ring position. Consequently, hypervalent aryliodine compounds have found special utility as precursors to various small-molecule 18 F-labeling synthons and to many radiotracers for biomedical imaging with positron emission tomography. This review summarizes this advance in radiofluorination chemistry, with emphasis on precursor synthesis, radiofluorination mechanism, method scope, and method application.
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Affiliation(s)
- Victor W Pike
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA
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14
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Lee YS, Chun JH, Hodošček M, Pike VW. Crystal Structures of Diaryliodonium Fluorides and Their Implications for Fluorination Mechanisms. Chemistry 2017; 23:4353-4363. [PMID: 28145069 DOI: 10.1002/chem.201604803] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 12/22/2016] [Indexed: 12/30/2022]
Abstract
The radiofluorination of diaryliodonium salts is of value for producing radiotracers for positron emission tomography. We report crystal structures for two diaryliodonium fluorides. Whereas diphenyliodonium fluoride (1 a) exists as a tetramer bridged by four fluoride ions, 2-methylphenyl(phenyl)iodonium fluoride (2 a) forms a fluoride-bridged dimer that is further halogen bonded to two other monomers. We discuss the topological relationships between the two and their implications for fluorination in solution. Both radiofluorination and NMR spectroscopy show that thermolysis of 2 a gives 2-fluorotoluene and fluorobenzene in a 2 to 1 ratio that is in good agreement with the ratio observed from the radiofluorination of 2-methylphenyl(phenyl)iodonium chloride (2 b). The constancy of the product ratio affirms that the fluorinations occur via the same two rapidly interconverting transition states whose energy difference dictates chemoselectivity. From quantum chemical studies with density functional theory we attribute the "ortho-effect" to the favorable electrostatic interaction between the incoming fluoride and the o-methyl in the transition state. By utilizing the crystal structures of 1 a and 2 a, the mechanisms of fluoroarene formation from diaryliodonium fluorides in their monomeric, homodimeric, heterodimeric, and tetrameric states were also investigated. We propose that oligomerization energy dictates whether the fluorination occurs through a monomeric or an oligomeric pathway.
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Affiliation(s)
- Yong-Sok Lee
- Center for Molecular Modeling, Office of Intramural Research, Center for Information Technology, National Institutes of Health, Building 12A, Rm 2049, Bethesda, MD, 20892, USA
| | - Joong-Hyun Chun
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Rm. B3C346A, 10 Center Drive, Bethesda, MD, 20892, USA.,Present address: Department of Nuclear Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, 03722, South Korea
| | - Milan Hodošček
- National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA.,National Institute of Chemistry, Ljubljana, Slovenia
| | - Victor W Pike
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Rm. B3C346A, 10 Center Drive, Bethesda, MD, 20892, USA
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15
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Arylsulfonamides and selectivity of matrix metalloproteinase-2: An overview. Eur J Med Chem 2017; 129:72-109. [DOI: 10.1016/j.ejmech.2017.02.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 02/02/2017] [Accepted: 02/06/2017] [Indexed: 12/14/2022]
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16
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Petersen IN, Kristensen JL, Herth MM. Nucleophilic 18
F-Labeling of Spirocyclic Iodonium Ylide or Boronic Pinacol Ester Precursors: Advantages and Disadvantages. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601448] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ida Nymann Petersen
- University of Copenhagen; Department of Drug Design and Pharmacology; Jagtvej 160 2100 Copenhagen Denmark
| | | | - Matthias Manfred Herth
- University of Copenhagen; Department of Drug Design and Pharmacology; Jagtvej 160 2100 Copenhagen Denmark
- Rigshospitalet; Department of Clinical Physiology, Nuclear Medicine and PET; Blegdamsvej 9 2100 Copenhagen Denmark
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17
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Mu L, Müller Herde A, Rüefli PM, Sladojevich F, Milicevic Sephton S, Krämer SD, Thompson AJ, Schibli R, Ametamey SM, Lochner M. Synthesis and Pharmacological Evaluation of [ 11C]Granisetron and [ 18F]Fluoropalonosetron as PET Probes for 5-HT 3 Receptor Imaging. ACS Chem Neurosci 2016; 7:1552-1564. [PMID: 27571447 DOI: 10.1021/acschemneuro.6b00192] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Serotonin-gated ionotropic 5-HT3 receptors are the major pharmacological targets for antiemetic compounds. Furthermore, they have become a focus for the treatment of irritable bowel syndrome (IBS) and there is some evidence that pharmacological modulation of 5-HT3 receptors might alleviate symptoms of other neurological disorders. Highly selective, high-affinity antagonists, such as granisetron (Kytril) and palonosetron (Aloxi), belong to a family of drugs (the "setrons") that are well established for clinical use. To enable us to better understand the actions of these drugs in vivo, we report the synthesis of 8-fluoropalonosetron (15) that has a binding affinity (Ki = 0.26 ± 0.05 nM) similar to the parent drug (Ki = 0.21 ± 0.03 nM). We radiolabeled 15 by nucleophilic 18F-fluorination of an unsymmetrical diaryliodonium palonosetron precursor and achieved the radiosynthesis of 1-(methyl-11C)-N-granisetron ([11C]2) through N-alkylation with [11C]CH3I, respectively. Both compounds [18F]15 (chemical and radiochemical purity >95%, specific activity 41 GBq/μmol) and [11C]2 (chemical and radiochemical purity ≥99%, specific activity 170 GBq/μmol) were evaluated for their utility as positron emission tomography (PET) probes. Using mouse and rat brain slices, in vitro autoradiography with both [18F]15 and [11C]2 revealed a heterogeneous and displaceable binding in cortical and hippocampal regions that are known to express 5-HT3 receptors at significant levels. Subsequent PET experiments suggested that [18F]15 and [11C]2 are of limited utility for the PET imaging of brain 5-HT3 receptors in vivo.
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Affiliation(s)
- Linjing Mu
- Department
of Nuclear Medicine, University Hospital Zürich, Rämistrasse
100, 8091 Zürich, Switzerland
| | - Adrienne Müller Herde
- Center for Radiopharmaceutical
Sciences of ETH, PSI and USZ, Vladimir-Prelog-Weg
4, 8093 Zürich, Switzerland
| | - Pascal M. Rüefli
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, 3012 Bern, Switzerland
| | - Filippo Sladojevich
- Center for Radiopharmaceutical
Sciences of ETH, PSI and USZ, Vladimir-Prelog-Weg
4, 8093 Zürich, Switzerland
| | - Selena Milicevic Sephton
- Center for Radiopharmaceutical
Sciences of ETH, PSI and USZ, Vladimir-Prelog-Weg
4, 8093 Zürich, Switzerland
| | - Stefanie D. Krämer
- Center for Radiopharmaceutical
Sciences of ETH, PSI and USZ, Vladimir-Prelog-Weg
4, 8093 Zürich, Switzerland
| | - Andrew J. Thompson
- Department
of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1PD, United Kingdom
| | - Roger Schibli
- Center for Radiopharmaceutical
Sciences of ETH, PSI and USZ, Vladimir-Prelog-Weg
4, 8093 Zürich, Switzerland
| | - Simon M. Ametamey
- Center for Radiopharmaceutical
Sciences of ETH, PSI and USZ, Vladimir-Prelog-Weg
4, 8093 Zürich, Switzerland
| | - Martin Lochner
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, 3012 Bern, Switzerland
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18
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Warnier C, Lemaire C, Becker G, Zaragoza G, Giacomelli F, Aerts J, Otabashi M, Bahri MA, Mercier J, Plenevaux A, Luxen A. Enabling Efficient Positron Emission Tomography (PET) Imaging of Synaptic Vesicle Glycoprotein 2A (SV2A) with a Robust and One-Step Radiosynthesis of a Highly Potent 18F-Labeled Ligand ([ 18F]UCB-H). J Med Chem 2016; 59:8955-8966. [PMID: 27598384 DOI: 10.1021/acs.jmedchem.6b00905] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We herein describe the straightforward synthesis of a stable pyridyl(4-methoxyphenyl)iodonium salt and its [18F] radiolabeling within a one-step, fully automated and cGMP compliant radiosynthesis of [18F]UCB-H ([18F]7), a PET tracer for the imaging of synaptic vesicle glycoprotein 2A (SV2A). Over the course of 1 year, 50 automated productions provided 34 ± 2% of injectable [18F]7 from up to 285 GBq (7.7 Ci) of [18F]fluoride in 50 min (uncorrected radiochemical yield, specific activity of 815 ± 185 GBq/μmol). The successful implementation of our synthetic strategy within routine, high-activity, and cGMP productions attests to its practicality and reliability for the production of large doses of [18F]7. In addition to enabling efficient and cost-effective clinical research on a range of neurological pathologies through the imaging of SV2A, this work further demonstrates the real value of iodonium salts for the cGMP 18F-PET tracer manufacturing industry, and their ability to fulfill practical and regulatory requirements in that field.
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Affiliation(s)
- Corentin Warnier
- GIGA Cyclotron Research Centre In Vivo Imaging, University of Liege , 4000 Liege, Belgium
| | - Christian Lemaire
- GIGA Cyclotron Research Centre In Vivo Imaging, University of Liege , 4000 Liege, Belgium
| | - Guillaume Becker
- GIGA Cyclotron Research Centre In Vivo Imaging, University of Liege , 4000 Liege, Belgium
| | - Guillermo Zaragoza
- Unidad de RX, Universidade de Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - Fabrice Giacomelli
- GIGA Cyclotron Research Centre In Vivo Imaging, University of Liege , 4000 Liege, Belgium
| | - Joël Aerts
- GIGA Cyclotron Research Centre In Vivo Imaging, University of Liege , 4000 Liege, Belgium.,INSERM U1148 , 75018 Paris, France
| | | | - Mohamed Ali Bahri
- GIGA Cyclotron Research Centre In Vivo Imaging, University of Liege , 4000 Liege, Belgium
| | | | - Alain Plenevaux
- GIGA Cyclotron Research Centre In Vivo Imaging, University of Liege , 4000 Liege, Belgium
| | - André Luxen
- GIGA Cyclotron Research Centre In Vivo Imaging, University of Liege , 4000 Liege, Belgium
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19
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Janssen B, Vugts DJ, Funke U, Molenaar GT, Kruijer PS, van Berckel BNM, Lammertsma AA, Windhorst AD. Imaging of neuroinflammation in Alzheimer's disease, multiple sclerosis and stroke: Recent developments in positron emission tomography. Biochim Biophys Acta Mol Basis Dis 2015; 1862:425-41. [PMID: 26643549 DOI: 10.1016/j.bbadis.2015.11.011] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/09/2015] [Accepted: 11/19/2015] [Indexed: 12/13/2022]
Abstract
Neuroinflammation is thought to play a pivotal role in many diseases affecting the brain, including Alzheimer's disease, multiple sclerosis and stroke. Neuroinflammation is characterised predominantly by microglial activation, which can be visualised using positron emission tomography (PET). Traditionally, translocator protein 18kDa (TSPO) is the target for imaging of neuroinflammation using PET. In this review, recent preclinical and clinical research using PET in Alzheimer's disease, multiple sclerosis and stroke is summarised. In addition, new molecular targets for imaging of neuroinflammation, such as monoamine oxidases, adenosine receptors and cannabinoid receptor type 2, are discussed. This article is part of a Special Issue entitled: Neuro Inflammation edited by Helga E. de Vries and Markus Schwaninger.
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Affiliation(s)
- Bieneke Janssen
- Department of Radiology & Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands.
| | - Danielle J Vugts
- Department of Radiology & Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands
| | - Uta Funke
- Department of Radiology & Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands; BV Cyclotron VU, Amsterdam, The Netherlands
| | - Ger T Molenaar
- Department of Radiology & Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands; BV Cyclotron VU, Amsterdam, The Netherlands
| | | | - Bart N M van Berckel
- Department of Radiology & Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands
| | - Adriaan A Lammertsma
- Department of Radiology & Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands
| | - Albert D Windhorst
- Department of Radiology & Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands.
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20
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Sulfonamide derivatives containing dihydropyrazole moieties selectively and potently inhibit MMP-2/MMP-9: Design, synthesis, inhibitory activity and 3D-QSAR analysis. Bioorg Med Chem Lett 2015; 25:4664-71. [DOI: 10.1016/j.bmcl.2015.08.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 07/22/2015] [Accepted: 08/10/2015] [Indexed: 11/22/2022]
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21
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Behrends M, Wagner S, Kopka K, Schober O, Schäfers M, Kumbhar S, Waller M, Haufe G. New matrix metalloproteinase inhibitors based on γ-fluorinated α-aminocarboxylic and α-aminohydroxamic acids. Bioorg Med Chem 2015; 23:3809-18. [DOI: 10.1016/j.bmc.2015.03.078] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 03/20/2015] [Accepted: 03/28/2015] [Indexed: 11/16/2022]
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22
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Edwards R, Wirth T. [(18)F]6-fluoro-3,4-dihydroxy-L-phenylalanine--recent modern syntheses for an elusive radiotracer. J Labelled Comp Radiopharm 2015; 58:183-7. [PMID: 25882075 DOI: 10.1002/jlcr.3285] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 03/04/2015] [Accepted: 03/05/2015] [Indexed: 11/07/2022]
Abstract
[(18)F]6-fluoro-3,4-dihydroxy-L-phenylalanine ([(18)F]F-DOPA) has been known to be a useful radiotracer for over 30 years. Its widespread clinical use has been hampered by the lack of a robust, high yielding synthesis. This review summarises new developments in radiochemistry that are providing solutions to long standing problems involved in the synthesis of this important but elusive radiotracer. Considerable advances in nucleophilic synthesis have been achieved by optimising multistep strategies and using both hypervalent iodine chemistry and transition metal-mediated fluorinations allowing for the production of high specific activity [(18)F]F-DOPA.
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Affiliation(s)
- Richard Edwards
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
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23
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Edwards R, Westwell AD, Daniels S, Wirth T. Convenient Synthesis of Diaryliodonium Salts for the Production of [18F]F-DOPA. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403378] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Müller A, Krämer SD, Meletta R, Beck K, Selivanova SV, Rancic Z, Kaufmann PA, Vos B, Meding J, Stellfeld T, Heinrich TK, Bauser M, Hütter J, Dinkelborg LM, Schibli R, Ametamey SM. Gene expression levels of matrix metalloproteinases in human atherosclerotic plaques and evaluation of radiolabeled inhibitors as imaging agents for plaque vulnerability. Nucl Med Biol 2014; 41:562-9. [PMID: 24853402 DOI: 10.1016/j.nucmedbio.2014.04.085] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/10/2014] [Accepted: 04/12/2014] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Atherosclerotic plaque rupture is the primary cause for myocardial infarction and stroke. During plaque progression macrophages and mast cells secrete matrix-degrading proteolytic enzymes, such as matrix metalloproteinases (MMPs). We studied levels of MMPs and tissue inhibitor of metalloproteinases-3 (TIMP-3) in relation to the characteristics of carotid plaques. We evaluated in vitro two radiolabeled probes targeting active MMPs towards non-invasive imaging of rupture-prone plaques. METHODS Human carotid plaques obtained from endarterectomy were classified into stable and vulnerable by visual and histological analysis. MMP-1, MMP-2, MMP-8, MMP-9, MMP-10, MMP-12, MMP-14, TIMP-3, and CD68 levels were investigated by quantitative polymerase chain reaction. Immunohistochemistry was used to localize MMP-2 and MMP-9 with respect to CD68-expressing macrophages. Western blotting was applied to detect their active forms. A fluorine-18-labeled MMP-2/MMP-9 inhibitor and a tritiated selective MMP-9 inhibitor were evaluated by in vitro autoradiography as potential lead structures for non-invasive imaging. RESULTS Gene expression levels of all MMPs and CD68 were elevated in plaques. MMP-1, MMP-9, MMP-12 and MMP-14 were significantly higher in vulnerable than stable plaques. TIMP-3 expression was highest in stable and low in vulnerable plaques. Immunohistochemistry revealed intensive staining of MMP-9 in vulnerable plaques. Western blotting confirmed presence of the active form in plaque lysates. In vitro autoradiography showed binding of both inhibitors to stable and vulnerable plaques. CONCLUSIONS MMPs differed in their expression patterns among plaque phenotypes, providing possible imaging targets. The two tested MMP-2/MMP-9 and MMP-9 inhibitors may be useful to detect atherosclerotic plaques, but not the vulnerable lesions selectively.
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Affiliation(s)
- Adrienne Müller
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland.
| | - Stefanie D Krämer
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Romana Meletta
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Katharina Beck
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | | | - Zoran Rancic
- Clinic for Cardiovascular Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Philipp A Kaufmann
- Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland
| | - Bernhard Vos
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | - Jörg Meding
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | - Timo Stellfeld
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | | | - Marcus Bauser
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | - Joachim Hütter
- Global Drug Discovery, Bayer Healthcare, Berlin, Germany
| | | | - Roger Schibli
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Simon M Ametamey
- Center for Radiopharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
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25
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Teresa Albelda M, Garcia-España E, Frias JC. Visualizing the atherosclerotic plaque: a chemical perspective. Chem Soc Rev 2014; 43:2858-76. [PMID: 24526041 DOI: 10.1039/c3cs60410a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Atherosclerosis is the major underlying pathologic cause of coronary artery disease. An early detection of the disease can prevent clinical sequellae such as angina, myocardial infarction, and stroke. The different imaging techniques employed to visualize the atherosclerotic plaque provide information of diagnostic and prognostic value. Furthermore, the use of contrast agents helps to improve signal-to-noise ratio providing better images. For nuclear imaging techniques and optical imaging these agents are absolutely necessary. We report on the different contrast agents that have been used, are used or may be used in future in animals, humans, or excised tissues for the distinct imaging modalities for atherosclerotic plaque imaging.
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Affiliation(s)
- Ma Teresa Albelda
- Universidad de Valencia, Instituto de Ciencia Molecular, Edificio de Institutos de Paterna, c/ Catedrático José Beltrán 2, 46071 Valencia, Spain
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26
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Altıparmak B, Lambrecht FY, Citak A. Design of radiolabeled gelatinase inhibitor peptide ((99m)Tc-CLP) and evaluation in rats. Appl Radiat Isot 2014; 89:130-3. [PMID: 24631744 DOI: 10.1016/j.apradiso.2014.02.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 01/16/2014] [Accepted: 02/13/2014] [Indexed: 11/15/2022]
Abstract
In malignant tissues, MMP-9 (gelatinase B, 92 kDa type IV collagenase) and MMP-2 (gelatinase A, 72 kDa type IV collagenase) are the most prevalent matrix metalloproteinases related to the tumor aggressiveness and metastatic potential. Since elevated levels of gelatinases are associated with poor prognosis in cancer patients, these enzymes are potential targets for tumor imaging to possibly predict metastases. In the present study, a cyclic decapeptide, CLP (Cys-Leu-Pro-Gly-His-Trp-Gly-Phe-Pro-Ser-Cys), was selected as a basic peptide because of its selective inhibitory activity toward gelatinases. The peptide was labelled with (99m)Tc with a radiolabelling efficiency of 94.6±4.1%. After determining the appropriate conditions for radiolabelling, a biodistribution study of radiolabelled peptide in Albino Wistar rats was done. According to biodistribution data, (99m)Tc-CLP showed high uptake in the lung, liver, uterus and spleen. The amount of normal tissue MMPs enzymes is known to be lower than a tumor tissue. In this connection, our findings show that matrix metalloproteinases inhibitory peptide which is CLP is labeled with (99m)Tc with high yield and radiolabeled peptide might be might be utilized for the imaging of gelatinase activity due to overexpression of MMP-2 and MMP-9 in tumor tissue.
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Affiliation(s)
- Burcu Altıparmak
- Department of Nuclear Applications, Institute of Nuclear Science, Ege University, Bornova, 35100 Izmir, Turkey
| | - Fatma Yurt Lambrecht
- Department of Nuclear Applications, Institute of Nuclear Science, Ege University, Bornova, 35100 Izmir, Turkey.
| | - Asli Citak
- Department of Nuclear Applications, Institute of Nuclear Science, Ege University, Bornova, 35100 Izmir, Turkey
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27
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Zeug A, Stawarski M, Bieganska K, Korotchenko S, Wlodarczyk J, Dityatev A, Ponimaskin E. Current microscopic methods for the neural ECM analysis. PROGRESS IN BRAIN RESEARCH 2014; 214:287-312. [PMID: 25410363 DOI: 10.1016/b978-0-444-63486-3.00013-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The extracellular matrix (ECM) occupies the space between both neurons and glial cells and thus provides a microenvironment that regulates multiple aspects of neural activities. Because of the vital role of ECM as a natural environment of cells in vivo, there is a growing interest to develop methodology allowing for the detailed structural and functional analyses of ECM. In this chapter, we provide the detailed overview of current microscopic methods used for ECM analysis and also describe general labeling strategies for ECM visualization. Since ECM remodeling involves the proteolytic cleavage of ECM, we will also describe current experimental approaches to image the proteolytic reorganization and/or degradation of ECM. The special focus of this chapter is set to the application of Förster resonance energy transfer-based approaches to monitor intracellular and extracellular matrix functions with high spatiotemporal resolution.
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Affiliation(s)
- Andre Zeug
- Cellular Neurophysiology, Hannover Medical School, Hannover, Germany
| | - Michal Stawarski
- Laboratory of Cell Biophysics, Department of Molecular and Cellular Neurobiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | | | - Svetlana Korotchenko
- Laboratory for Brain Extracellular Matrix Research, University of Nizhny Novgorod, Nizhny Novgorod, Russia; Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, Genova, Italy; Department of Nanophysics, Istituto Italiano di Tecnologia, Genova, Italy
| | - Jakub Wlodarczyk
- Laboratory of Cell Biophysics, Department of Molecular and Cellular Neurobiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Alexander Dityatev
- Laboratory for Brain Extracellular Matrix Research, University of Nizhny Novgorod, Nizhny Novgorod, Russia; Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, Genova, Italy; Department of Nanophysics, Istituto Italiano di Tecnologia, Genova, Italy; Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Magdeburg, Germany
| | - Evgeni Ponimaskin
- Cellular Neurophysiology, Hannover Medical School, Hannover, Germany.
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