1
|
Affiliation(s)
- Muniappan Thirumalaikumar
- Department of Applied Chemistry, Sri Venkateswara College of Engineering, Pennalur, Tamil Nadu, India
| |
Collapse
|
2
|
Verhoog S, Brooks AF, Winton WP, Viglianti BL, Sanford MS, Scott PJH. Ring opening of epoxides with [ 18F]FeF species to produce [ 18F]fluorohydrin PET imaging agents. Chem Commun (Camb) 2019; 55:6361-6364. [PMID: 31062010 DOI: 10.1039/c9cc02779c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A simple technique for the preparation of [18F]HF has been developed and applied to the generation of an [18F]FeF species for opening sterically hindered epoxides. This method has been successfully employed to prepare four drug-like molecules, including 5-[18F]fluoro-6-hydroxy-cholesterol, a potential adrenal/endocrine PET imaging agent. This easily automated one-pot procedure produces sterically hindered fluorohydrin PET imaging agents in good yields and high molar activities.
Collapse
Affiliation(s)
- Stefan Verhoog
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan 48109, USA.
| | | | | | | | | | | |
Collapse
|
3
|
Kim H, Im YH, Ahn J, Yang J, Choi JY, Lee KH, Kim BT, Choe YS. Synthesis and in vivo characterization of 18F-labeled difluoroboron-curcumin derivative for β-amyloid plaque imaging. Sci Rep 2019; 9:6747. [PMID: 31043696 PMCID: PMC6494845 DOI: 10.1038/s41598-019-43257-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 04/17/2019] [Indexed: 11/09/2022] Open
Abstract
Positron emission tomography imaging of β-amyloid (Aβ) plaques has proven useful in the diagnosis of Alzheimer’s disease. A previous study from our group showed that 4′-O-[18F]fluoropropylcurcumin has poor brain permeability, which is thought to be due to its rapid metabolism. In this study, we synthesized difluoroboron complexes of fluorine-substituted curcumin derivatives (1–4) and selected one of them based on the in vitro binding assays. The selected ligand 2 was found to distinctively stain Aβ plaques in APP/PS1 transgenic mouse brain sections. Radioligand [18F]2 was synthesized via a two-step reaction consisting of [18F]fluorination and subsequent aldol condensation. Biodistribution and metabolism studies indicated that radioligand [18F]2 was converted to polar radioactive products and trapped in the normal mouse brain. In contrast, optical images of mice acquired after injection of 2 showed moderate fluorescence signal intensity in the mouse brain at 2 min with a decrease in the signal within 30 min. In the ex vivo optical images, the fluorescence signals in major tissues disappeared within 30 min. Taken together, these results suggest that [18F]2 may be converted to polar 18F-labeled blue-shifted fluorescent products. Further structural modifications are thus needed to render the radioligand metabolically stable.
Collapse
Affiliation(s)
- Hyunjung Kim
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, 06351, Korea
| | - Young Hoon Im
- Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea
| | - Jinhee Ahn
- Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea
| | - Jehoon Yang
- Laboratory Animal Research Center, Samsung Medical Center, Seoul, 06351, Korea
| | - Joon Young Choi
- Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea
| | - Kyung-Han Lee
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, 06351, Korea.,Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea
| | - Byung-Tae Kim
- Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea
| | - Yearn Seong Choe
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, 06351, Korea. .,Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Korea.
| |
Collapse
|
4
|
Van Hée VF, Labar D, Dehon G, Grasso D, Grégoire V, Muccioli GG, Frédérick R, Sonveaux P. Radiosynthesis and validation of (±)-[18F]-3-fluoro-2-hydroxypropionate ([18F]-FLac) as a PET tracer of lactate to monitor MCT1-dependent lactate uptake in tumors. Oncotarget 2018; 8:24415-24428. [PMID: 28107190 PMCID: PMC5421858 DOI: 10.18632/oncotarget.14705] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 12/26/2016] [Indexed: 01/17/2023] Open
Abstract
Cancers develop metabolic strategies to cope with their microenvironment often characterized by hypoxia, limited nutrient bioavailability and exposure to anticancer treatments. Among these strategies, the metabolic symbiosis based on the exchange of lactate between hypoxic/glycolytic cancer cells that convert glucose to lactate and oxidative cancer cells that preferentially use lactate as an oxidative fuel optimizes the bioavailability of glucose to hypoxic cancer cells. This metabolic cooperation has been described in various human cancers and can provide resistance to anti-angiogenic therapies. It depends on the expression and activity of monocarboxylate transporters (MCTs) at the cell membrane. MCT4 is the main facilitator of lactate export by glycolytic cancer cells, and MCT1 is adapted for lactate uptake by oxidative cancer cells. While MCT1 inhibitor AZD3965 is currently tested in phase I clinical trials and other inhibitors of lactate metabolism have been developed for anticancer therapy, predicting and monitoring a response to the inhibition of lactate uptake is still an unmet clinical need. Here, we report the synthesis, evaluation and in vivo validation of (±)-[18F]-3-fluoro-2-hydroxypropionate ([18F]-FLac) as a tracer of lactate for positron emission tomography. [18F]-FLac offers the possibility to monitor MCT1-dependent lactate uptake and inhibition in tumors in vivo.
Collapse
Affiliation(s)
- Vincent F Van Hée
- Pole of Pharmacology, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCL), B-1200 Brussels, Belgium
| | - Daniel Labar
- Pole of Molecular Imaging, Radiotherapy and Oncology, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCL), B-1200 Brussels, Belgium
| | - Gwenaël Dehon
- Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCL), B-1200 Brussels, Belgium
| | - Debora Grasso
- Pole of Pharmacology, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCL), B-1200 Brussels, Belgium
| | - Vincent Grégoire
- Pole of Molecular Imaging, Radiotherapy and Oncology, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCL), B-1200 Brussels, Belgium
| | - Giulio G Muccioli
- Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCL), B-1200 Brussels, Belgium
| | - Raphaël Frédérick
- Louvain Drug Research Institute (LDRI), Université Catholique de Louvain (UCL), B-1200 Brussels, Belgium
| | - Pierre Sonveaux
- Pole of Pharmacology, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCL), B-1200 Brussels, Belgium
| |
Collapse
|
5
|
Yang Y, Wang X, Yang H, Fu H, Zhang J, Zhang X, Dai J, Zhang Z, Lin C, Guo Y, Cui M. Synthesis and Monkey-PET Study of (R)- and (S)- 18F-Labeled 2-Arylbenzoheterocyclic Derivatives as Amyloid Probes with Distinctive in Vivo Kinetics. Mol Pharm 2016; 13:3852-3863. [PMID: 27744706 DOI: 10.1021/acs.molpharmaceut.6b00643] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This study describes an effective strategy to improve pharmacokinetics of Aβ imaging agents, offering a novel class of (R)- and (S)-18F-labeled 2-arylbenzoheterocyclic derivatives which bear an additional chiral hydroxyl group on the side chain. These ligands displayed binding abilities toward Aβ aggregates with Ki values ranging from 3.2 to 195.6 nM. Chirality-related discrepancy was observed in biodistribution, and (S)-2-phenylbenzoxazole enantiomers exhibited vastly improved brain clearance with washout ratios higher than 20. Notably, (S)-[18F]28 possessed high binding potency (Ki = 7.6 nM) and exceptional brain kinetics (9.46% ID/g at 2 min, brain2min/brain60min = 27.8) that is superior to well-established [18F]AV45. The excellent pharmacokinetics and low nonspecific binding of (S)-[18F]28 were testified by dynamic PET/CT scans in monkey brains. In addition, (S)-[18F]28 clearly labeled Aβ plaques both in vitro and ex vivo. These results might qualify (S)-[18F]28 to detect Aβ plaques with high signal-to-noise ratio.
Collapse
Affiliation(s)
- Yanping Yang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University , Beijing 100875, P. R. China
| | - Xuedan Wang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University , Beijing 100875, P. R. China
| | - Hui Yang
- Department of Nuclear Medicine, Chinese PLA General Hospital , Beijing 100853, P. R. China
| | - Hualong Fu
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University , Beijing 100875, P. R. China
| | - Jinming Zhang
- Department of Nuclear Medicine, Chinese PLA General Hospital , Beijing 100853, P. R. China
| | - Xiaojun Zhang
- Department of Nuclear Medicine, Chinese PLA General Hospital , Beijing 100853, P. R. China
| | - Jiapei Dai
- Wuhan Institute for Neuroscience and Neuroengineering, South-Central University for Nationalities , Wuhan 430074, P. R. China
| | - Zhiyong Zhang
- Beijing ZHIBO Bio-Medical Technology Co. Ltd. , Beijing 102502, P. R. China
| | - Chunping Lin
- Beijing ZHIBO Bio-Medical Technology Co. Ltd. , Beijing 102502, P. R. China
| | - Yuzhi Guo
- Beijing ZHIBO Bio-Medical Technology Co. Ltd. , Beijing 102502, P. R. China
| | - Mengchao Cui
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University , Beijing 100875, P. R. China
| |
Collapse
|
6
|
Graham TJA, Lambert RF, Ploessl K, Kung HF, Doyle AG. Enantioselective Radiosynthesis of Positron Emission Tomography (PET) Tracers Containing [18F]Fluorohydrins. J Am Chem Soc 2014; 136:5291-4. [DOI: 10.1021/ja5025645] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas J. A. Graham
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - R. Frederick Lambert
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Karl Ploessl
- Department
of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Hank F. Kung
- Department
of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department
of Pharmacology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Abigail G. Doyle
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| |
Collapse
|
7
|
Co(salen)-mediated enantioselective radiofluorination of epoxides. Radiosynthesis of enantiomerically enriched [18F]F-MISO via kinetic resolution. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.09.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|