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Sergienko VS, Churakov AV. Structural Features of Monomeric Octahedral d2-Rhenium(V) Monooxo Complexes with Oxygen Atoms of Tridentate Chelating (O,N,S) Ligands. RUSS J COORD CHEM+ 2019. [DOI: 10.1134/s1070328419080074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Taira Y, Uehara T, Tsuchiya M, Takemori H, Mizuno Y, Takahashi S, Suzuki H, Hanaoka H, Akizawa H, Arano Y. Coordination-Mediated Synthesis of Purification-Free Bivalent 99mTc-Labeled Probes for in Vivo Imaging of Saturable System. Bioconjug Chem 2018; 29:459-466. [PMID: 29320158 DOI: 10.1021/acs.bioconjchem.7b00788] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In the synthesis of technetium-99m (99mTc) labeled target-specific ligands, the presence of a large excess of unlabeled ligands over 99mTc in the injectate hinders target accumulation of 99mTc-labeled ligands by competing for target molecules. To circumvent the problem, we recently developed a concept of the metal coordination-mediated multivalency, and proved the concept with a 99mTc-labeled trivalent compound [99mTc(CO)3(CN-RGD)3]+. In this study, D-penicillamine (Pen) was selected as a chelating molecule and a cyclic RGDfK peptide was conjugated to Pen via a hexanoic linkage (Pen-Ahx-c(RGDfK)). 99mTc complexation reaction, and the stability, integrin αvβ3 binding affinity, and biodistribution of the 99mTc-labeled probe were investigated to evaluate the applicability of the concept to bivalent probes. 99mTc-[Pen-Ahx-c(RGDfK)]2 was obtained over 95% radiochemical yields under low Pen-Ahx-c(RGDfK) concentration (50 μM). 99mTc-[Pen-Ahx-c(RGDfK)]2 showed approximately 10-times higher integrin αvβ3 binding affinity than the monovalent compounds, Pen-Ahx-c(RGDfK) and c(RGDyV). In biodistribution studies, the tumor accumulation of 99mTc-[Pen-Ahx-c(RGDfK)]2 was decreased to 77% and 43% of HPLC-purified (Pen-Ahx-c(RGDfK)-free) 99mTc-[Pen-Ahx-c(RGDfK)]2 by the presence of 5 nmol of unlabeled Pen-Ahx-c(RGDfK) and Re-[Pen-Ahx-c(RGDfK)]2, respectively. 99mTc-[Pen-Ahx-c(RGDfK)]2 provided tumor image without removing unlabeled ligand, while a 99mTc-labeled monovalent probe prepared from a monovalent ligand could not. These findings indicate the availability of the design concept to prepare 99mTc-labeled bivalent probes with a variety of 99mTc core and other metallic radionuclides of clinical relevance.
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Affiliation(s)
- Yuichiro Taira
- Graduate School of Pharmaceutical Sciences, Chiba University , Chiba, 260-8675, Japan
| | - Tomoya Uehara
- Graduate School of Pharmaceutical Sciences, Chiba University , Chiba, 260-8675, Japan
| | - Masao Tsuchiya
- Graduate School of Pharmaceutical Sciences, Chiba University , Chiba, 260-8675, Japan
| | - Hideaki Takemori
- Graduate School of Pharmaceutical Sciences, Chiba University , Chiba, 260-8675, Japan
| | - Yuki Mizuno
- Graduate School of Pharmaceutical Sciences, Chiba University , Chiba, 260-8675, Japan.,Showa Pharmaceutical University , Machida, 194-8543, Japan
| | - Shiori Takahashi
- Graduate School of Pharmaceutical Sciences, Chiba University , Chiba, 260-8675, Japan
| | - Hiroyuki Suzuki
- Graduate School of Pharmaceutical Sciences, Chiba University , Chiba, 260-8675, Japan
| | - Hirofumi Hanaoka
- Graduate School of Medicine, Gunma University , Maebashi, 371-8511, Japan
| | | | - Yasushi Arano
- Graduate School of Pharmaceutical Sciences, Chiba University , Chiba, 260-8675, Japan
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Sergienko VS, Churakov AV. Specific structural features of monomeric octahedral oxo complexes of d 2-rhenium(V): 2. Structure of monooxo compounds of d 2-re(V) with nitrogen atoms at the trans positions to the O(oxo) ligands. CRYSTALLOGR REP+ 2015. [DOI: 10.1134/s1063774515030153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bartholomä MD, Louie AS, Valliant JF, Zubieta J. Technetium and Gallium Derived Radiopharmaceuticals: Comparing and Contrasting the Chemistry of Two Important Radiometals for the Molecular Imaging Era. Chem Rev 2010; 110:2903-20. [DOI: 10.1021/cr1000755] [Citation(s) in RCA: 250] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mark D. Bartholomä
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, and Department of Chemistry, McMaster University, Hamilton, Canada ON L8S 4M1
| | - Anika S. Louie
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, and Department of Chemistry, McMaster University, Hamilton, Canada ON L8S 4M1
| | - John F. Valliant
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, and Department of Chemistry, McMaster University, Hamilton, Canada ON L8S 4M1
| | - Jon Zubieta
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, and Department of Chemistry, McMaster University, Hamilton, Canada ON L8S 4M1
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Grimminger P, Klüfers P. Oxidorhenium(V) complexes with l-histidine and pyranosides. Dalton Trans 2010; 39:715-9. [DOI: 10.1039/b912603a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nguyen HH, Abram U. Rhenium and technetium complexes with tridentate S,N,O ligands derived from benzoylhydrazine. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.09.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Huy Nguyen H, Deflon VM, Abram U. Mixed-Ligand Complexes of Technetium and Rhenium with Tridentate Benzamidines and Bidentate Benzoylthioureas. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900288] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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