1
|
Liu C, Tang J, Xu Y, Cao S, Fang Y, Zhao C, Chen Z. Molar activity of [ 18F]FP-(+)-DTBZ radiopharmaceutical: Determination and its effect on quantitative analysis of VMAT2 autoradiography. J Pharm Biomed Anal 2021; 203:114212. [PMID: 34153939 DOI: 10.1016/j.jpba.2021.114212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 04/24/2021] [Accepted: 06/13/2021] [Indexed: 10/21/2022]
Abstract
[18F]fluoropropyl-(+)-dihydrotetrabenazine ([18F]FP-(+)-DTBZ) is a rising positron tracer for imaging vesicular monoamine transporter II (VMAT2) in the central nervous system. The present work was to develop a novel chromatographic method capable of the molar activity (Am) determination of [18F]FP-(+)-DTBZ. As a complement work of the Am measurement, we also investigated the effect of Am on the quantitative analysis of VMAT2 autoradiography with [18F]FP-(+)-DTBZ. The Am determination was performed by high performance liquid chromatography (HPLC) using the non-radioactive standard (FP-(+)-DTBZ) for calibration plot of peak area against concentration. Based on this correlation, the Am of [18F]FP-(+)-DTBZ was calculated and corrected to the end of synthesis. In the quantitative analysis of in vitro VMAT2 autoradiography, the striatum radioactivity uptake together with the uptake ratio of striatum versus cortex reduced along with the decrease of Am and the increase of the FP-(+)-DTBZ content. Therefore, the Am and the corresponding FP-(+)-DTBZ content have a significant effect on the quantitative analysis of VMAT2 autoradiography using [18F]FP-(+)-DTBZ.
Collapse
Affiliation(s)
- Chunyi Liu
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, 214063, China
| | - Jie Tang
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, 214063, China
| | - Yingjiao Xu
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, 214063, China; Department of Radiopharmaceuticals, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Shanshan Cao
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, 214063, China
| | - Yi Fang
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, 214063, China
| | - Chao Zhao
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, 214063, China
| | - Zhengping Chen
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, 214063, China.
| |
Collapse
|
2
|
Shigeno T, Kozaka T, Kitamura Y, Ogawa K, Taki J, Kinuya S, Shiba K. In vitro and in vivo evaluation of [ 125/123I]-2-[4-(2-iodophenyl)piperidino]cyclopentanol([ 125/123I]-OI5V) as a potential sigma-1 receptor ligand for SPECT. Ann Nucl Med 2021; 35:167-175. [PMID: 33417152 DOI: 10.1007/s12149-020-01552-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/28/2020] [Indexed: 11/26/2022]
Abstract
INTRODUCTION We investigated the characteristics of radio-iodinated 2-[4-(2-iodophenyl)piperidino]cyclopentanol (OI5V) as a single photon emission computed tomography (SPECT) ligand for mapping sigma-1 receptor (σ-1R), which plays an important role in stress remission in many organs. METHODS OI5V was synthesized from o-bromobenzaldehyde in three steps. OI5V was evaluated for its affinity to VAChT, σ-1 and σ-2 receptor by in vitro competitive binding assays using rat tissues and radioligands, [3H]vesamicol, ( +)-[3H]pentazocine and [3H]DTG, respectively. [125/123I]OI5V was prepared from o-trimethylstannyl-cyclopentanevesamicol (OT5V) by the iododestannylation reaction under no-carrier-added conditions. In vivo biodistribution study of [125I]OI5V in blood, brain regions and major organs of rats was performed at 2, 10, 30 and 60 min post-injection. In vivo blocking study and ex vivo autoradiography were performed to assess the binding selectivity of [125I]OI5V for σ-1 receptor. SPECT-CT imaging study was performed using [123I]OI5V. RESULTS OI5V demonstrated high selective binding affinity for σ-1R in vitro. In the biodistribution study, the blood-brain barrier (BBB) permeability of [125I]OI5V was high and the accumulation of [125I]OI5V in the rat cortex at 2 min post-injection exceeded 2.00%ID/g. In the in vivo blocking study, the accumulation of [125I]OI5V in the brain was significantly blocked by co-administration of 0.5 μmol of SA4503 and 1.0 μmol of pentazocine. Ex vivo autoradiography revealed that the regional brain accumulation of [125I]OI5V was similar to σ-1R-rich regions of the rat brain. SPECT images of [123I]OI5V in the rat brain reflected the distribution of sigma receptors in the brain. CONCLUSIONS This study confirmed that [125/123I]OI5V selectively binds σ-1R in the rat brain in vivo. [123I]OI5V was suggested to be useful as a σ-1R ligand for SPECT.
Collapse
Affiliation(s)
- Taiki Shigeno
- Division of Tracer Kinetics, Advanced Science Research Center, Kanazawa, Ishikawa, Japan
| | - Takashi Kozaka
- Division of Tracer Kinetics, Advanced Science Research Center, Kanazawa, Ishikawa, Japan
- Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa , Ishikawa, Japan
| | - Yoji Kitamura
- Division of Tracer Kinetics, Advanced Science Research Center, Kanazawa, Ishikawa, Japan
- Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa , Ishikawa, Japan
| | - Kazuma Ogawa
- Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa , Ishikawa, Japan
| | - Junichi Taki
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Seigo Kinuya
- Division of Tracer Kinetics, Advanced Science Research Center, Kanazawa, Ishikawa, Japan
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Kazuhiro Shiba
- Division of Tracer Kinetics, Advanced Science Research Center, Kanazawa, Ishikawa, Japan.
- Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa , Ishikawa, Japan.
| |
Collapse
|
3
|
Assessment of the effective absorbed dose of 4-benzyl-1-(3-[125I]-iodobenzylsulfonyl)piperidine in humans on the basis of biodistribution data of rats. Nucl Med Commun 2015; 36:90-4. [DOI: 10.1097/mnm.0000000000000210] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
4
|
Sadeghzadeh M, Johari Daha F, Sheibani S, Erfani M. Radioiodination of 4-benzyl-1-(3-iodobenzylsulfonyl)piperidine, 4-(3-iodobenzyl)-1-(benzylsulfonyl)piperazine and their derivatives via isotopic and non-isotopic exchange reactions. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3347-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
5
|
Sadeghzadeh M, Sheibani S, Ghandi M, Daha FJ, Amanlou M, Arjmand M, Hasani Bozcheloie A. Synthesis and receptor binding studies of novel 4,4-disubstituted arylalkyl/arylalkylsulfonyl piperazine and piperidine-based derivatives as a new class of σ1 ligands. Eur J Med Chem 2013; 64:488-97. [DOI: 10.1016/j.ejmech.2013.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 04/02/2013] [Accepted: 04/03/2013] [Indexed: 11/30/2022]
|
6
|
Piergentili A, Amantini C, Del Bello F, Giannella M, Mattioli L, Palmery M, Perfumi M, Pigini M, Santoni G, Tucci P, Zotti M, Quaglia W. Novel highly potent and selective sigma 1 receptor antagonists related to spipethiane. J Med Chem 2010; 53:1261-9. [PMID: 20067271 DOI: 10.1021/jm901542q] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Conservative chemical modifications of the core structure of the lead spipethiane (1) afforded novel potent sigma(1) ligands. sigma(1) affinity and sigma(1/)sigma(2) selectivity proved to be favored by the introduction of polar functions (oxygen atom or carbonyl group) in position 3 or 4 (4-6) or by the elongation of the distance between the two hydrophobic portions of the molecule with the simultaneous presence of a carbonyl group in position 4 (8 and 9). The observed cytostatic effect against the human breast cancer cell line MCF-7/ADR, highly expressing sigma(1) receptors, and not against MCF-7, as well as the enhancement of morphine analgesia highlighted the sigma(1) antagonist profile of this series of compounds. In particular, due to its high sigma(1) affinity (pK(i) = 10.28) and sigma(1)/sigma(2) selectivity ratio (29510), compound 9 might be a novel valuable tool for sigma receptor characterization and a suitable template for the rational design of potential therapeutically useful sigma(1) antagonists.
Collapse
Affiliation(s)
- Alessandro Piergentili
- Dipartimento di Scienze Chimiche, Università di Camerino, via S. Agostino 1, 62032 Camerino, Italy
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Ogawa K, Shiba K, Akhter N, Yoshimoto M, Washiyama K, Kinuya S, Kawai K, Mori H. Evaluation of radioiodinated vesamicol analogs for sigma receptor imaging in tumor and radionuclide receptor therapy. Cancer Sci 2009; 100:2188-92. [PMID: 19659515 PMCID: PMC11158154 DOI: 10.1111/j.1349-7006.2009.01279.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Revised: 06/30/2009] [Accepted: 06/30/2009] [Indexed: 11/26/2022] Open
Abstract
It has been reported that sigma receptors are highly expressed in a variety of human tumors. In this study, we selected (+)-2-[4-(4-iodophenyl)piperidino] cyclohexanol [(+)-pIV] as a sigma receptor ligand and evaluated the potential of radioiodinated (+)-pIV for tumor imaging and therapy. (+)-[(125/131)I]pIV was prepared by an iododestannylation reaction under no-carrier-added conditions with radiochemical purity over 99% after HPLC purification. Biodistribution experiments were performed by the intravenous injection of (+)-[(125)I]pIV into mice bearing human prostate tumors (DU-145). Blocking studies were performed by intravenous injection of (+)-[(125)I]pIV mixed with an excess amount of unlabeled sigma ligand into DU-145 tumor-bearing mice. For therapeutic study, (+)-[(131)I]pIV was injected at a dose of 7.4 MBq followed by measurement of the tumor size. In biodistribution experiments, (+)-[(125)I]pIV showed high uptake and long residence in the tumor. High tumor to blood and muscle ratios were achieved because the radioactivity levels of blood and muscle were low. However, the accumulations of radioactivity in non-target tissues, such as liver and kidney, were high. The radioactivity in the non-target tissues slowly decreased over time. Co-injection of (+)-[(125)I]pIV with an excess amount of unlabeled sigma ligand resulted in a significant decrease in the tumor/blood ratio, indicating sigma receptor-mediated tumor uptake. In therapeutic study, tumor growth in mice treated with (+)-[(131)I]pIV was significantly inhibited compared to that of an untreated group. These results indicate that radioiodinated (+)-pIV has a high potential for sigma receptor imaging in tumor and radionuclide receptor therapy.
Collapse
Affiliation(s)
- Kazuma Ogawa
- Graduate School of Natural Science and Technology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Targeted delivery with peptidomimetic conjugated self-assembled nanoparticles. Pharm Res 2008; 26:612-30. [PMID: 19085091 DOI: 10.1007/s11095-008-9802-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Accepted: 12/01/2008] [Indexed: 12/28/2022]
Abstract
Peptides produce specific nanostructures, making them useful for targeting in biological systems but they have low bioavailability, potential immunogenicity and poor metabolic stability. Peptidomimetic self-assembled NPs can possess biological recognition motifs as well as providing desired engineering properties. Inorganic NPs, coated with self-assembled macromers for stability and anti-fouling, and conjugated with target-specific ligands, are advancing imaging from the anatomy-based level to the molecular level. Ligand conjugated NPs are attractive for cell-selective tumor drug delivery, since this process has high transport capacity as well as ligand dependent cell specificity. Peptidomimetic NPs can provide stronger interaction with surface receptors on tumor cells, resulting in higher uptake and reduced drug resistance. Self-assembled NPs conjugated with peptidomimetic antigens are ideal for sustained presentation of vaccine antigens to dendritic cells and subsequent activation of T cell mediated adaptive immune response. Self-assembled NPs are a viable alternative to encapsulation for sustained delivery of proteins in tissue engineering. Cell penetrating peptides conjugated to NPs are used as intracellular delivery vectors for gene expression and as transfection agents for plasmid delivery. In this work, synthesis, characterization, properties, immunogenicity, and medical applications of peptidomimetic NPs in imaging, tumor delivery, vaccination, tissue engineering, and intracellular delivery are reviewed.
Collapse
|