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Sidorenko GV, Miroslavov AE, Tyupina MY. Technetium(I) carbonyl complexes for nuclear medicine: Coordination-chemical aspect. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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2
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Synthesis, 99mTc-labeling, in-vivo study and in-silico investigation of 6-amino-5-[(bis-(2-hydroxy-ethyl)-amino]methyl]2-methyl pyrimidin-4-ol as a potential probe for tumor targeting. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08412-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractThis study aimed to synthesize a new pyrimidine derivative with a good synthesis yield of 87% to act as a new cancer marker after radiolabeling with Tc-99m in a high radiochemical yield of 92.3%. In-vivo study in tumor-bearing Swiss albino mice model revealed promising data with high uptake in cancer. Docking study showed good binding interactions of the radiosynthesized complex at the binding site. In conclusion, this novel complex could be a potential probe for cancer targeting.
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Dardenne K, Duckworth S, Gaona X, Polly R, Schimmelpfennig B, Pruessmann T, Rothe J, Altmaier M, Geckeis H. A Combined Study of Tc Redox Speciation in Complex Aqueous Systems: Wet-Chemistry, Tc K-/L 3-Edge X-ray Absorption Fine Structure, and Ab Initio Calculations. Inorg Chem 2021; 60:12285-12298. [PMID: 34328309 DOI: 10.1021/acs.inorgchem.1c01487] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The combination of wet-chemistry experiments (measurements of pH, Eh, and [Tc]) and advanced spectroscopic techniques (K- and L3-edge X-ray absorption fine structure spectroscopy) confirms the formation of a very stable Tc(V)-gluconate complex under anoxic conditions. In the presence of gluconate and an excess of Sn(II) (at pe + pH ≈ 2), technetium forms a very stable Tc(IV)-gluconate complex significantly enhancing the solubility defined by TcO2(s) in hyperalkaline gluconate-free systems. A new setup for "tender" X-ray spectroscopy (spectral range, ∼2-5 keV) in transmission or total fluorescence yield detection mode based on a He flow cell has been developed at the INE Beamline for radionuclide science (KIT light source). This setup allows handling of radioactive specimens with total activities up to one million times the exemption limit. For the first time, Tc L3-edge measurements (∼2.677 keV) of Tc species in liquid (aqueous) media are reported, clearly outperforming conventional K-edge spectroscopy as a tool to differentiate Tc oxidation states and coordination environments. The coupling of L3-edge X-ray absorption near-edge spectroscopy measurements and relativistic multireference ab initio methods opens new perspectives in the definition of chemical and thermodynamic models for systems of relevance in the context of nuclear waste disposal, environmental, and pharmaceutical applications.
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Affiliation(s)
- Kathy Dardenne
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Sarah Duckworth
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Xavier Gaona
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Robert Polly
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Bernd Schimmelpfennig
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Tim Pruessmann
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Jörg Rothe
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Marcus Altmaier
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Horst Geckeis
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, D-76021 Karlsruhe, Germany
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Technetium Nitrido-Peroxo Complexes: An Unexplored Class of Coordination Compounds. INORGANICS 2019. [DOI: 10.3390/inorganics7120142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The purpose of this work was to further expand the chemistry of mixed technetium nitrido-peroxo complexes, a still poorly explored class of compounds containing the Tc(VII) moiety, [99gTc][Tc(N)(O2)2]. A number of novel complexes of the formula [99gTc][Tc(N)(O2)2(L)] with bidentate ligands (L) (where L = deprotonated alanine, glycine, proline) were prepared by reacting a solution of nitrido-technetic(VI) acid with L in the presence of a source of H2O2. Alternatively, the complex [99gTc][Tc(N)(O2)2X]− (X = Cl, Br) was used as a precursor for substitution reactions where the halogenide ion was replaced by the bidentate ligand. The new complexes were characterized by elemental analysis and mass spectroscopy. The preparation of the analogous [99mTc][Tc(N)(O2)2] moiety, radiolabeled with the metastable isomer Tc-99m, was also studied at a no-carrier-added level, using S-methyl-N-methyl-dithiocarbazate as the donor of the nitrido nitrogen atoms.
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Guleria M, Das T, Vats K, Amirdhanayagam J, Mathur A, Sarma HD, Dash A. Preparation and evaluation of 99mTc-labeled porphyrin complexes prepared using PNP and HYNIC cores: studying the effects of core selection on pharmacokinetics and tumor uptake in a mouse model. MEDCHEMCOMM 2019; 10:606-615. [PMID: 31057740 DOI: 10.1039/c8md00559a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 02/16/2019] [Indexed: 11/21/2022]
Abstract
Porphyrins are tetrapyrrolic macrocyclic ligands known for their affinity towards neoplastic tissues and once radiolabeled with a suitable diagnostic radioisotope could potentially be used for the imaging of tumorous lesions. In the present study, an unsymmetrically substituted porphyrin derivative namely 5-(p-amino-propyloxyphenyl)-10,15,20-tris(carboxymethyleneoxyphenyl)-porphyrin was synthesized and modified further to enable radiolabeling with 99mTc using two different 99mTc-cores viz. 99mTc-HYNIC (hydrazino nicotinic acid) and 99mTc(N)PNP2 (PNP2 = bis-[(2-dimethylphosphino)ethyl]-methoxy-ethylamine) in order to study the effect of employing different 99mTc-cores on tumor affinity and pharmacokinetic behavior of the resultant 99mTc-labeled porphyrin complexes. 99mTc-Porphyrin complexes were characterized by reversed phase HPLC studies and could be prepared with >95% radiochemical purity under optimized radiolabeling conditions. Both 99mTc-complexes were found to be adequately stable in human blood serum till 3 h post-preparation. Bio-distribution studies, carried out in Swiss mice bearing fibrosarcoma tumors, revealed relatively higher tumor uptake for the 99mTc-HYNIC-porphyrin complex (3.95 ± 1.42 and 3.28 ± 0.27% IA per g) compared to that exhibited by the 99mTc(N)PNP-DTC-porphyrin complex (1.52 ± 0.53 and 1.56 ± 0.10% IA per g) at 1.5 and 3 h post-administration, although the former complex exhibited comparatively lower lipophilicity in the octanol-water system. Higher uptake and longer retention in the blood were observed for the 99mTc-HYNIC-porphyrin complex (6.63 ± 0.75 and 4.36 ± 0.25% IA per g) compared to that exhibited by the 99mTc(N)PNP-DTC-porphyrin complex (2.41 ± 0.54 and 2.30 ± 0.16% IA per g) at both 1.5 and 3 h post-administration. However, relatively lower liver uptake was observed for the former complex (19.26 ± 3.48 and 18.45 ± 1.05% IA per g) than that exhibited by the latter one (39.37 ± 3.88 and 34.15 ± 8.25% IA per g) at both 1.5 and 3 h post-administration. This study indicates that the in vivo behavior exhibited by the 99mTc-labeled porphyrins not only depends on their lipophilicity/hydrophilicity but is also governed by the Tc-cores employed for radiolabeling.
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Affiliation(s)
- Mohini Guleria
- Radiopharmaceuticals Division , Bhabha Atomic Research Centre , Trombay , Mumbai - 400085 , India . ; ; Tel: +91 22 2559 0613
| | - Tapas Das
- Radiopharmaceuticals Division , Bhabha Atomic Research Centre , Trombay , Mumbai - 400085 , India . ; ; Tel: +91 22 2559 0613.,Homi Bhabha National Institute , Anushaktinagar , Mumbai - 400094 , India
| | - Kusum Vats
- Radiopharmaceuticals Division , Bhabha Atomic Research Centre , Trombay , Mumbai - 400085 , India . ; ; Tel: +91 22 2559 0613
| | - Jeyachitra Amirdhanayagam
- Radiopharmaceuticals Division , Bhabha Atomic Research Centre , Trombay , Mumbai - 400085 , India . ; ; Tel: +91 22 2559 0613
| | - Anupam Mathur
- Radiopharmaceuticals Program , Board of Radiation and Isotope Technology , Vashi , Navi Mumbai - 400703 , India
| | - Haladhar D Sarma
- Radiation Biology and Health Sciences Division , Bhabha Atomic Research Centre , Trombay , Mumbai - 400085 , India
| | - Ashutosh Dash
- Radiopharmaceuticals Division , Bhabha Atomic Research Centre , Trombay , Mumbai - 400085 , India . ; ; Tel: +91 22 2559 0613.,Homi Bhabha National Institute , Anushaktinagar , Mumbai - 400094 , India
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Motaleb MA, Selim AA, El-Tawoosy M, Sanad MH, El-Hashash MA. Synthesis, characterization, radiolabeling and biodistribution of a novel cyclohexane dioxime derivative as a potential candidate for tumor imaging. Int J Radiat Biol 2018; 94:590-596. [DOI: 10.1080/09553002.2018.1466067] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- M. A. Motaleb
- Labeled Compounds Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - Adli A. Selim
- Labeled Compounds Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - M. El-Tawoosy
- Labeled Compounds Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - M. H. Sanad
- Labeled Compounds Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - M. A. El-Hashash
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Cairo, Egypt
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Liang L, Zhang X, Su X, Li J, Tian Y, Xue H, Xu H. 99m Tc-labeled oligomeric nanoparticles as potential agents for folate receptor-positive tumor targeting. J Labelled Comp Radiopharm 2018; 61:54-60. [PMID: 29086447 DOI: 10.1002/jlcr.3577] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/30/2017] [Accepted: 10/19/2017] [Indexed: 11/06/2022]
Abstract
One type of biocompatible nanoparticles functionalized with folate and 99m Tc was successfully synthesized. Maleimide-folic acid (Mal-FA) was selected to covalently conjugate with -SH of the nanoparticles (NPs) to prepare NPs-FA for targeting. 99m Tc was selected to conjugate with -NH2 and -SH groups of cysteine residues on the surface of NPs to prepare NPs-FA-99m Tc for radioactive counting. The ability to target folate receptors of NPs-FA-99m Tc was assessed in uptake studies with folate-receptor-positive human HepG2 cells. The results showed that the as-prepared NPs can selectively uptake by folate receptor-overexpressing HepG2 tumor cells in vitro. The oligomeric hybrid NPs radiolabeled with 99m Tc may develop to be SPECT/CT imaging biomaterials with high selectivity.
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Affiliation(s)
- Lili Liang
- Department of Chemistry, Bengbu Medical College, Bengbu, Anhui, P. R. China
| | - Xueqian Zhang
- Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaoyu Su
- Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jianchun Li
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, Anhui, P. R. China
| | - Yong Tian
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, Anhui, P. R. China
| | - Hongbao Xue
- Department of Chemistry, Bengbu Medical College, Bengbu, Anhui, P. R. China
| | - Huiqin Xu
- Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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8
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Synthesis, radiolabeling and biological distribution of a new dioxime derivative as a potential tumor imaging agent. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5310-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Akbar MU, Ahmad MR, Shaheen A, Mushtaq S. A review on evaluation of technetium-99m labeled radiopharmaceuticals. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-5019-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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10
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Hickey JL, Simpson EJ, Hou J, Luyt LG. An Integrated Imaging Probe Design: The Synthesis of99mTc/Re-Containing Macrocyclic Peptide Scaffolds. Chemistry 2014; 21:568-78. [DOI: 10.1002/chem.201404774] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Indexed: 11/11/2022]
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11
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Ilem-Ozdemir D, Gundogdu E, Ekinci M, Ozgenc E, Asikoglu M. Comparative permeability studies with radioactive and nonradioactive risedronate sodium from self-microemulsifying drug delivery system and solution. Drug Dev Ind Pharm 2014; 41:1493-8. [DOI: 10.3109/03639045.2014.959022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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12
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Qiu L, Lin JG, Gong XD, Cheng W, Luo SN. Substituent Effect on the Structure and Biological Property of99mTc-Labeled Diphosphonates: Theoretical Studies. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.12.4084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Wuest F, Bouvet V, Mai B, LaPointe P. Fluorine- and rhenium-containing geldanamycin derivatives as leads for the development of molecular probes for imaging Hsp90. Org Biomol Chem 2012; 10:6724-31. [PMID: 22825378 DOI: 10.1039/c2ob25744k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Heat shock protein 90 (Hsp90) is an ATP-dependent molecular chaperone responsible for protein quality control in cells. Hsp90 has been shown to be overexpressed in many human cancers. This has prompted extensive research on Hsp90 inhibitors as novel anticancer agents and, more recently, the development of molecular probes for imaging Hsp90 expression in vivo. This work describes the development of various fluorine-containing and rhenium-containing geldanamycin derivatives as leads for the development of corresponding (18)F-labeled and (99m)Tc-labeled PET and SPECT probes for molecular imaging of Hsp90 expression. All compounds were evaluated in an in vitro ATPase activity assay using Hsp90 isoform Hsp82p. Fluorobenzoylated geldanamycin derivative 5 displayed comparable inhibitory potency like parent compound geldanamycin.
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Affiliation(s)
- Frank Wuest
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada.
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Mirković M, Janković D, Vranješ-Đurić S, Radović M, Stanković D, Mijin D, Nikolić N. Novel tetradentate diamine dioxime ligands: synthesis, characterization and in vivo behavior of their 99mTc-complexes. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2870] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Marija Mirković
- Vinča Institute of Nuclear Sciences; University of Belgrade; 11001; Belgrade; Serbia
| | - Drina Janković
- Vinča Institute of Nuclear Sciences; University of Belgrade; 11001; Belgrade; Serbia
| | - Sanja Vranješ-Đurić
- Vinča Institute of Nuclear Sciences; University of Belgrade; 11001; Belgrade; Serbia
| | - Magdalena Radović
- Vinča Institute of Nuclear Sciences; University of Belgrade; 11001; Belgrade; Serbia
| | - Dragana Stanković
- Vinča Institute of Nuclear Sciences; University of Belgrade; 11001; Belgrade; Serbia
| | - Dušan Mijin
- Faculty of Technology and Metallurgy; University of Belgrade; 11120; Belgrade; Serbia
| | - Nadežda Nikolić
- Vinča Institute of Nuclear Sciences; University of Belgrade; 11001; Belgrade; Serbia
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Lin J, Qiu L, Cheng W, Luo S, Xue L, Zhang S. Development of superior bone scintigraphic agent from a series of 99mTc-labeled zoledronic acid derivatives. Appl Radiat Isot 2012; 70:848-55. [DOI: 10.1016/j.apradiso.2011.12.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 11/30/2011] [Accepted: 12/08/2011] [Indexed: 10/28/2022]
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Ünak P, Biber Müftüler FZ, İçhedef Ç, Medine Eİ, Özmen K, Ünak T, Kilçar AY, Gümüşer FG, Parlak Y, Bilgin ES. Synthesis, radiolabeling and in vivo biodistribution of diethylstilbestrol phosphate derivative (DES-P). J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-1755-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Maruk AY, Bruskin AB, Kodina GE. Novel 99m Tc radiopharmaceuticals with bifunctional chelating agents. RADIOCHEMISTRY 2011. [DOI: 10.1134/s1066362211040011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Qiu L, Lin JG, Gong XD, Ju XH, Luo SN. Theoretical Studies on Electronic Structure and Absorption Spectrum of Prototypical Technetium-Diphosphonate Complex99mTc-MDP. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.7.2358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Mokhtari B, Pourabdollah K, Dalali N. Molecule and ion recognition of nano-baskets of calixarenes since 2005. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.555538] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Bahram Mokhtari
- a Phase Separation & FIA Lab., Department of Chemistry, Faculty of Science , Zanjan University , 45195-313 Zanjan , Iran
- b Department of Production Engineering , Iranian Offshore Oil Company , Lavan Island , Iran
| | - Kobra Pourabdollah
- c Department of Chemical Engineering , Islamic Azad University , Shahreza Branch, Shahreza , Iran
| | - Nasser Dalali
- a Phase Separation & FIA Lab., Department of Chemistry, Faculty of Science , Zanjan University , 45195-313 Zanjan , Iran
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Altiparmak B, Lambrecht FY, Bayrak E, Durkan K. Design and synthesis of 99mTc-citro-folate for use as a tumor-targeted radiopharmaceutical. Int J Pharm 2010; 400:8-14. [DOI: 10.1016/j.ijpharm.2010.08.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 07/24/2010] [Accepted: 08/02/2010] [Indexed: 10/19/2022]
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Abrantes AM, Serra MES, Gonçalves AC, Rio J, Oliveiros B, Laranjo M, Rocha-Gonsalves AM, Sarmento-Ribeiro AB, Botelho MF. Hypoxia-induced redox alterations and their correlation with 99mTc-MIBI and 99mTc-HL-91 uptake in colon cancer cells. Nucl Med Biol 2009; 37:125-32. [PMID: 20152711 DOI: 10.1016/j.nucmedbio.2009.11.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2009] [Revised: 11/03/2009] [Accepted: 11/07/2009] [Indexed: 11/30/2022]
Abstract
Colorectal cancer is one of the most common malignancies in the Western world and is an example of a solid tumour in which hypoxia is a common feature and develops because of the inability of the vascular system to supply adequate amounts of oxygen to growing tumours. Hypoxia effects on tumour cell biology can be detected and characterized using different methods. The use of imaging with gamma-emitting radionuclides to detect hypoxic tissue was first suggested by Chapman in 1979 [N Engl J Med 301 (1979) 1429-1432]. (99m)Tc-4,9-diaza-3,3,10,10-tetramethyldodecan-2,11-dione dioxime, also known as (99m)Tc-HL-91, has been among the most studied hypoxia markers. The objective of this study was to correlate the uptake of (99m)Tc-HL-91 and (99m)Tc-MIBI in colon cancer cells under normoxic and hypoxic conditions and to compare this information with some parameters such as oxidative stress and mitochondrial dysfunction of the cells analyzed by flow cytometry. Our results show that the in vitro (99m)Tc-HL-91 uptake is higher in hypoxic conditions, which is confirmed by the decreased uptake of (99m)Tc-MIBI. Flow cytometry results demonstrate that hypoxic conditions used are not enough to induce cellular death, but are responsible for the alterations in the intracellular redox environment, namely, increase of ROS production, proteic pimonidazol-derived adduct formation and alteration in the mitochondrial membrane permeability. Therefore, these results confirm that (99m)Tc-HL-91 is a radiopharmaceutical with favourable characteristics for detecting hypoxia.
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Affiliation(s)
- Ana Margarida Abrantes
- Biophysics/Biomathematics Institute, IBILI, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal.
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Abrantes AM, Serra ME, Murtinho D, Gonsalves AR, Botelho MF. An insight into tumoral hypoxia: the radiomarkers and clinical applications. Oncol Rev 2009. [DOI: 10.1007/s12156-009-0001-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Kharisov BI, Kharissova OV, Leija Gutierrez H, Ortiz Méndez U. Recent Advances on the Soluble Carbon Nanotubes. Ind Eng Chem Res 2008. [DOI: 10.1021/ie800694f] [Citation(s) in RCA: 141] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lane SR, Veerendra B, Rold TL, Sieckman GL, Hoffman TJ, Jurisson SS, Smith CJ. 99mTc(CO)3-DTMA bombesin conjugates having high affinity for the GRP receptor. Nucl Med Biol 2008; 35:263-72. [PMID: 18355681 DOI: 10.1016/j.nucmedbio.2007.11.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2007] [Revised: 10/26/2007] [Accepted: 11/17/2007] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Targeted diagnosis of specific human cancer types continues to be of significant interest in nuclear medicine. 99mTc is ideally suited as a diagnostic radiometal for in vivo tumor targeting due to its ideal physical characteristics and diverse labeling chemistries in numerous oxidation states. METHODS In this study, we report a synthetic approach toward design of a new tridentate amine ligand for the organometallic aqua-ion [99mTc(H2O)3(CO)3]+. The new chelating ligand framework, 2-(N,N'-Bis(tert-butoxycarbonyl)diethylenetriamine) acetic acid (DTMA), was synthesized from a diethylenetriamine precursor and fully characterized by mass spectrometry and nuclear magnetic resonance spectroscopy (1H and 13C). DTMA was conjugated to H2N-(X)-BBN(7-14)NH2, where X=an amino acid or aliphatic pharmacokinetic modifier and BBN=bombesin peptide, by means of solid phase peptide synthesis. DTMA-(X)-BBN(7-14)NH2 conjugates were purified by reversed-phase high-performance chromatography and characterized by electrospray-ionization mass spectrometry. RESULTS The new conjugates were radiolabeled with [99mTc(H2O)3(CO)3]+ produced via Isolink radiolabeling kits to produce [99mTc(CO)3-DTMA-(X)-BBN(7-14)NH2]. Radiolabeled conjugates were purified by reversed-phase high-performance chromatography. Effective receptor binding behavior was evaluated in vitro and in vivo. CONCLUSIONS [99mTc(CO)3-DTMA-(X)-BBN(7-14)NH2] conjugates displayed very high affinity for the gastrin releasing peptide receptor in vitro and in vivo. Therefore, these conjugates hold some propensity to be investigated as molecular imaging agents that specifically target human cancers uniquely expressing the gastrin releasing peptide receptor subtypes.
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Affiliation(s)
- Stephanie R Lane
- Research Division, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO 65201, USA
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Bühl M, Golubnychiy V. Density-functional computation of (99)Tc NMR chemical shifts. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2008; 46 Suppl 1:S36-S44. [PMID: 18855338 DOI: 10.1002/mrc.2276] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
99Tc chemical shifts of TcO4(-), TcH9(2-), TcOF5, TcO2F4(-), TcOCl4(-), Tc2(CO)10, and Tc(CO)3L3(+) (L = CO, MeCN, H2O) are computed using geometries optimized with the gradient-corrected BP86 and hybrid B3P86 density functionals, at the gauge-including atomic orbitals (GIAO), -BPW91 and -B3LYP levels. For this set of compounds, substituent effects on delta(99Tc) are better described with the pure BPW91 functional than with B3LYP, in contrast to most other transition-metal chemical shifts studied so far. A rough, qualitative correlation is found between computed electric-field gradients at the Tc nuclei and the corresponding 99Tc NMR line widths. Thermal and solvation effects on magnetic shielding constants of aqueous TcO4(-), as assessed by averaging these properties over trajectories from Car-Parrinello molecular dynamics simulations, are indicated to be small and comparable to those of MnO4(-). Complexation to aqueous uranyl, UO2(2+), is predicted to affect delta(99Tc) of TcO4(-) only slightly; somewhat larger complexation shifts are obtained for the oxygen nuclei of pertechnetate, suggesting that 17O NMR could be a useful probe for the extent of association between both radionuclides in solution.
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Affiliation(s)
- Michael Bühl
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY169ST, UK.
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Chen X, Guo Y, Liu B. Caution to HPLC analysis of tricarbonyl technetium radiopharmaceuticals: An example of changing constitution of complexes in column. J Pharm Biomed Anal 2007; 43:1576-9. [PMID: 17187955 DOI: 10.1016/j.jpba.2006.11.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2006] [Revised: 11/22/2006] [Accepted: 11/22/2006] [Indexed: 11/15/2022]
Abstract
Radio-HPLC is a powerful tool for analyzing radioactive species in radiopharmaceutical chemistry. In this paper, we found an example that the commonly used eluting solvent, acetonitrile, could coordinate with the popular radiopharmaceutical nuclides, technetium-99m, during chromatography. [(99m)Tc(CO)(3)(H(2)O)(3)](+) and [Re(CO)(3)(H(2)O)(3)](+) showed quite different retention time when they were eluted using acetonitrile/water as mobile phase. However, they almost demonstrated the same retention time when they were eluted using methanol/water as mobile phase. Further analysis showed that both [(99m)Tc(CO)(3)(H(2)O)(3)](+) and [Re(CO)(3)(H(2)O)(3)](+) could be changed into [(99m)Tc(CO)(3)(CH(3)CN)(3)](+) and [Re(CO)(3)(CH(3)CN)(x)(H(2)O)(3-x)](+) during the separation, respectively. Some former works mistook the [(99m)Tc(CO)(3)(CH(3)CN)(3)](+) for [(99m)Tc(CO)(3)(H(2)O)(3)](+) when using acetonitrile and water in analysis. Quality control of the radiopharmaceuticals containing metal complex should be careful since HPLC solvent could replace some liable ligand molecules.
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Affiliation(s)
- Xiangji Chen
- Key Laboratory of Radiopharmaceuticals, Beijing Normal University, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, PR China
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