1
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Chen L, Quayle K, Smith ZM, Connell TU, Doeven EH, Hayne DJ, Adcock JL, Wilson DJD, Agugiaro J, Pattuwage ML, Adamson NS, Francis PS. Chemiluminescence and electrochemiluminescence of water-soluble iridium(III) complexes containing a tetraethylene-glycol functionalised triazolylpyridine ligand. Anal Chim Acta 2024; 1304:342470. [PMID: 38637058 DOI: 10.1016/j.aca.2024.342470] [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: 11/17/2023] [Revised: 02/20/2024] [Accepted: 03/11/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND Iridium(III) complexes, exhibiting high luminescence quantum yields and a wide range of emission colours, are promising alternatives to tris(2,2'-bipyridine)ruthenium(II) for chemiluminescence (CL) and electrochemiluminescence (ECL) detection. This emerging class of reagent, however, is limited by the poor solubility of many iridium(III) complexes in aqueous solution, and lack of understanding of their remarkably variable selectivities towards different analytes. RESULTS Seven [Ir(C^N)2(pt-TEG)]+ complexes, exhibiting a wide range of reduction potentials and emission energies, were examined with six model analytes. For CL, cerium(IV) was used as the oxidant. The alkylamine analytes generally produced greater CL and ECL with the more readily oxidised Ir(III) complexes (C^N = piq, bt, ppy), predominantly through the 'direct' pathway requiring oxidation of both metal complex and analyte. Aniline derivatives that did not also contain secondary or tertiary alkylamines elicited CL from the less readily oxidised complexes (C^N = df-ppy-CF3, df-ppy) via energy transfer. The most difficult to oxidise complexes (C^N = df(CF3)-ppy-Me, df(CN)-ppy) gave poor responses due to the limited potential window of the solvent and inefficiency of energy transfer to their high energy excited states. Greater CL and/or ECL intensities were generally obtained for each analyte with at least one Ir(III) complex than with [Ru(bpy)3]2+; superior limits of detection for two analytes were demonstrated. SIGNIFICANCE This exploration of CL/ECL in which the properties of luminophore, analyte and oxidant are all varied provides a new understanding of the influence of the metal-complex potentials and excited state energy on the light-producing and quenching pathways, and consequently, their distinct selectivity towards different analytes. These findings will guide the development of water-soluble Ir(III) complexes as CL and ECL reagents.
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Affiliation(s)
- Lifen Chen
- Jiaxing Key Laboratory of Molecular Recognition and Sensing, College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, 314001, China
| | - Kim Quayle
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Geelong, Victoria, 3220, Australia
| | - Zoe M Smith
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3220, Australia
| | - Timothy U Connell
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Geelong, Victoria, 3220, Australia
| | - Egan H Doeven
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Geelong, Victoria, 3220, Australia
| | - David J Hayne
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3220, Australia
| | - Jacqui L Adcock
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Geelong, Victoria, 3220, Australia
| | - David J D Wilson
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Johnny Agugiaro
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Michael L Pattuwage
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Geelong, Victoria, 3220, Australia
| | - Natasha S Adamson
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Geelong, Victoria, 3220, Australia
| | - Paul S Francis
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Geelong, Victoria, 3220, Australia.
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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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3
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Mikulová MB, Mikuš P. Advances in Development of Radiometal Labeled Amino Acid-Based Compounds for Cancer Imaging and Diagnostics. Pharmaceuticals (Basel) 2021; 14:167. [PMID: 33669938 PMCID: PMC7924883 DOI: 10.3390/ph14020167] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/13/2021] [Accepted: 02/18/2021] [Indexed: 02/08/2023] Open
Abstract
Radiolabeled biomolecules targeted at tumor-specific enzymes, receptors, and transporters in cancer cells represent an intensively investigated and promising class of molecular tools for the cancer diagnosis and therapy. High specificity of such biomolecules is a prerequisite for the treatment with a lower burden to normal cells and for the effective and targeted imaging and diagnosis. Undoubtedly, early detection is a key factor in efficient dealing with many severe tumor types. This review provides an overview and critical evaluation of novel approaches in the designing of target-specific probes labeled with metal radionuclides for the diagnosis of most common death-causing cancers, published mainly within the last three years. Advances are discussed such traditional peptide radiolabeling approaches, and click and nanoparticle chemistry. The progress of radiolabeled peptide based ligands as potential radiopharmaceuticals is illustrated via novel structure and application studies, showing how the molecular modifications reflect their binding selectivity to significant onco-receptors, toxicity, and, by that, practical utilization. The most impressive outputs in categories of newly developed structures, as well as imaging and diagnosis approaches, and the most intensively studied oncological diseases in this context, are emphasized in order to show future perspectives of radiometal labeled amino acid-based compounds in nuclear medicine.
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Affiliation(s)
- Mária Bodnár Mikulová
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, 832 32 Bratislava, Slovakia;
| | - Peter Mikuš
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, 832 32 Bratislava, Slovakia;
- Toxicological and Antidoping Center (TAC), Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, 832 32 Bratislava, Slovakia
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4
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Slikboer SR, Pitchumony TS, Banevicius L, Mercanti N, Edem PE, Valliant JF. Imidazole fused phenanthroline (PIP) ligands for the preparation of multimodal Re(I) and 99mTc(I) probes. Dalton Trans 2020; 49:14826-14836. [PMID: 33034336 DOI: 10.1039/d0dt02829k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A small library of [2 + 1] 99mTc(i) complexes based on phenyl-imidazole-fused phenanthroline (PIP) ligands were synthesized and evaluated as multimodal molecular imaging probes. Using either a two-step or a one-pot synthesis method, 99mTc-PIP complexes containing N-methylimidazole as the monodentate ligand were prepared and isolated in good (54 to 89%) radiochemical yield, with the exception of one derivative bearing a strongly electron-withdrawing substituent. The stability of the [2 + 1] complexes was assessed in saline and in cysteine and histidine challenge studies, showing 6 hours stability, making them suitable for in vivo studies. In parallel, the Re(i) analogues were prepared as reference standards to verify the structure of the 99mTc complexes. The optical properties were consistent with other previously reported [2 + 1] type Re(i) complexes that have been used as cellular dyes and sensors. To facilitate the development of targeted derivatives, a tetrazine-PIP ligand was also synthesized. The 99mTc complex of the tetrazine PIP ligand effectively coupled to compounds containing a trans-cyclooctene (TCO) group including a TCO-albumin derivative, which was prepared as a model targeting molecule. An added benefit of the Re-PIP-Tz construct is that the emission from the metal complex was quenched by the presence of the tetrazine. Following the addition of TCO, there was a 70-fold increase in fluorescence emission, which can in future be leveraged during in vitro studies to reduce background signal.
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Affiliation(s)
- Samantha R Slikboer
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4 M1, Canada.
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5
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Okoye NC, Baumeister JE, Najafi Khosroshahi F, Hennkens HM, Jurisson SS. Chelators and metal complex stability for radiopharmaceutical applications. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2018-3090] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Diagnostic and therapeutic nuclear medicine relies heavily on radiometal nuclides. The most widely used and well-known radionuclide is technetium-99m (99mTc), which has dominated diagnostic nuclear medicine since the advent of the 99Mo/99mTc generator in the 1960s. Since that time, many more radiometals have been developed and incorporated into potential radiopharmaceuticals. One critical aspect of radiometal-containing radiopharmaceuticals is their stability under in vivo conditions. The chelator that is coordinated to the radiometal is a key factor in determining radiometal complex stability. The chelators that have shown the most promise and are under investigation in the development of diagnostic and therapeutic radiopharmaceuticals over the last 5 years are discussed in this review.
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Affiliation(s)
| | | | | | - Heather M. Hennkens
- Department of Chemistry , University of Missouri , Columbia, MO 65211 , USA
- University of Missouri Research Reactor Center , Columbia, MO 65211 , USA
| | - Silvia S. Jurisson
- Department of Chemistry , University of Missouri , Columbia, MO 65211 , USA
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6
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Erfani M, Malek H, Sadat Ebrahimi SE, Hassanzadeh L. New99mTc(CO)3-radiolabeled arylpiperazine pharmacophore as potent 5HT1Aserotonin receptor radiotracer: Docking studies, chemical synthesis, radiolabeling, and biological evaluation. J Labelled Comp Radiopharm 2019; 62:166-177. [DOI: 10.1002/jlcr.3709] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 12/14/2018] [Accepted: 01/10/2019] [Indexed: 12/30/2022]
Affiliation(s)
- Mostafa Erfani
- Radiation Application Research School; Nuclear Science and Technology Research Institute (NSTRI); Tehran Iran
| | - Hadi Malek
- Department of Nuclear Medicine and Molecular Imaging, Rajaie Cardiovascular, Medical, and Research Center; Iran University of Medical Sciences; Tehran Iran
| | | | - Leila Hassanzadeh
- Department of Nuclear Medicine, School of Medicine, Rajaie Cardiovascular, Medical & Research Center; Iran University of Medical Sciences; Tehran Iran
- Department of Medicinal Chemistry, School of Pharmacy-International Campus; Iran University of Medical Sciences; Tehran Iran
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7
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Omar SAE, Scattergood PA, McKenzie LK, Jones C, Patmore NJ, Meijer AJHM, Weinstein JA, Rice CR, Bryant HE, Elliott PIP. Photophysical and Cellular Imaging Studies of Brightly Luminescent Osmium(II) Pyridyltriazole Complexes. Inorg Chem 2018; 57:13201-13212. [PMID: 30351084 DOI: 10.1021/acs.inorgchem.8b01627] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The series of complexes [Os(bpy)3- n(pytz) n][PF6]2 (bpy = 2,2'-bipyridyl, pytz = 1-benzyl-4-(pyrid-2-yl)-1,2,3-triazole, 1 n = 0, 2 n = 1, 3 n = 2, 4 n = 3) were prepared and characterized and are rare examples of luminescent 1,2,3-triazole-based osmium(II) complexes. For 3 we present an attractive and particularly mild preparative route via an osmium(II) η6-arene precursor circumventing the harsh conditions that are usually required. Because of the high spin-orbit coupling constant associated with the Os(II) center the absorption spectra of the complexes all display absorption bands of appreciable intensity in the range of 500-700 nm corresponding to spin-forbidden ground-state-to-3MLCT transitions (MLCT = metal-to-ligand charge transfer), which occur at significantly lower energies than the corresponding spin-allowed 1MLCT transitions. The homoleptic complex 4 is a bright emitter (λmaxem = 614 nm) with a relatively high quantum yield of emission of ∼40% in deoxygenated acetonitrile solutions at room temperature. Water-soluble chloride salts of 1-4 were also prepared, all of which remain emissive in aerated aqueous solutions at room temperature. The complexes were investigated for their potential as phosphorescent cellular imaging agents, whereby efficient excitation into the 3MLCT absorption bands at the red side of the visible range circumvents autofluorescence from biological specimens, which do not absorb in this region of the spectrum. Confocal microscopy reveals 4 to be readily taken up by cancer cell lines (HeLa and EJ) with apparent lysosomal and endosomal localization, while toxicity assays reveal that the compounds have low dark and light toxicity. These complexes therefore provide an excellent platform for the development of efficient luminescent cellular imaging agents with advantageous photophysical properties that enable excitation and emission in the biologically transparent region of the optical spectrum.
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Affiliation(s)
| | | | - Luke K McKenzie
- Academic Unit of Molecular Oncology, Sheffield Institute for Nucleic Acids, Department of Oncology and Metabolism , University of Sheffield , Beech Hill Road , Sheffield S10 2RX , U.K
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , U.K
| | - Callum Jones
- Academic Unit of Molecular Oncology, Sheffield Institute for Nucleic Acids, Department of Oncology and Metabolism , University of Sheffield , Beech Hill Road , Sheffield S10 2RX , U.K
| | | | - Anthony J H M Meijer
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , U.K
| | - Julia A Weinstein
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , U.K
| | | | - Helen E Bryant
- Academic Unit of Molecular Oncology, Sheffield Institute for Nucleic Acids, Department of Oncology and Metabolism , University of Sheffield , Beech Hill Road , Sheffield S10 2RX , U.K
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8
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Connell TU, Donnelly PS. Labelling proteins and peptides with phosphorescent d6 transition metal complexes. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.12.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Scattergood PA, Sinopoli A, Elliott PI. Photophysics and photochemistry of 1,2,3-triazole-based complexes. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.017] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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10
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Yazdani A, Janzen N, Czorny S, Valliant JF. Technetium(I) Complexes of Bathophenanthrolinedisulfonic Acid. Inorg Chem 2017; 56:2958-2965. [PMID: 28199089 DOI: 10.1021/acs.inorgchem.6b03058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bathophenanthrolinedisulfonate (BPS) complexes of technetium(I) of the type [Tc(CO)3(BPS)(L)]n (L = imidazole derivatives) were synthesized and evaluated both in vitro and in vivo. [99mTc(CO)3(BPS)(MeIm)]- (MeIm = 1-methyl-1H-imidazole) was prepared in near-quantitative yield using a convenient two-step, one-pot labeling procedure. A targeted analogue capable of binding regions of calcium turnover associated with bone metabolism was also prepared. Here, a bisphosphonate was linked to the metal through an imidazole ligand to give [99mTc(CO)3(BPS)(ImAln)]2- (ImAln = an imidazole-alendronate ligand) in high yield. The technetium(I) complexes were stable in vitro, and in biodistribution studies, [99mTc(CO)3(BPS)(ImAln)]2- exhibited rapid clearance from nontarget tissues and significant accumulation in the shoulder (7.9 ± 0.2% ID/g) and knees (15.1 ± 0.9% ID/g) by 6 h, with the residence time in the skeleton reaching 24 h. A rhenium analogue, which is luminescent and has the same structure, was also prepared and used for fluorescence labeling of cells in vitro. The data reported demonstrate the potential of this class of compounds for use in creating isostructural optical and nuclear probes.
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Affiliation(s)
- Abdolreza Yazdani
- Department of Chemistry and Chemical Biology and ‡Centre for Probe Development and Commercialization, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - Nancy Janzen
- Department of Chemistry and Chemical Biology and ‡Centre for Probe Development and Commercialization, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - Shannon Czorny
- Department of Chemistry and Chemical Biology and ‡Centre for Probe Development and Commercialization, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - John F Valliant
- Department of Chemistry and Chemical Biology and ‡Centre for Probe Development and Commercialization, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
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11
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Hayes TR, Bottorff SC, Slocumb WS, Barnes CL, Clark AE, Benny PD. Influence of bidentate ligand donor types on the formation and stability in 2 + 1 fac-[M I(CO) 3] + (M = Re, 99mTc) complexes. Dalton Trans 2017; 46:1134-1144. [PMID: 28045466 DOI: 10.1039/c6dt04282a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the last two decades, a number of chelate strategies have been proposed for the fac-[MI(CO)3]+ (M = Re, 99mTc) core in radiopharmaceutical applications. However, the development of new ligands/complexes with improved function and in vivo performance has been limited in recent years. Expanding on our previous studies using the 2 + 1 labeling strategy, a series of bidentate ligands (neutral vs. anionic) containing an aromatic amine in combination with monodentate pyridine analogs or imidazole were explored to determine the influence of the bidentate and monodentate ligands on the formation and stability of the respective complexes. The 2 + 1 complexes with Re and 99mTc were synthesized in two steps and characterized by standard radio/chemical methods. X-ray characterization and density functional theory analysis of the Re 2 + 1 complexes with the complete bidentate series with 4-dimethylaminopyridine were conducted, indicating enhanced ligand binding energies of the neutral over anionic ligands. In the 99mTc studies, anionic bidentate ligands had significantly higher formation yields of the 2 + 1 product, but neutral ligands appear to have increased stability in an amino acid challenge assay. Both bidentate series exhibited improved stability by increasing the basicity of the pyridine ligands.
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Affiliation(s)
- Thomas R Hayes
- Washington State University, Department of Chemistry, Pullman, WA 99164, USA.
| | - Shalina C Bottorff
- Washington State University, Department of Chemistry, Pullman, WA 99164, USA.
| | - Winston S Slocumb
- Washington State University, Department of Chemistry, Pullman, WA 99164, USA.
| | - Charles L Barnes
- Department of Chemistry, University of Missouri, Columbia, MO 65211, USA
| | - Aurora E Clark
- Washington State University, Department of Chemistry, Pullman, WA 99164, USA.
| | - Paul D Benny
- Washington State University, Department of Chemistry, Pullman, WA 99164, USA.
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12
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Scattergood PA, Elliott PIP. An unexpected journey from highly tunable phosphorescence to novel photochemistry of 1,2,3-triazole-based complexes. Dalton Trans 2017; 46:16343-16356. [DOI: 10.1039/c7dt03836d] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Complexes containing the humble 1,2,3-triazole ring moiety have enabled access to highly tunable with efficient phosphorescence but have also in facilitated access to novel photoreactive excited states yielding highly unusual photochemical reactivity.
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13
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Investigating the cytotoxicity of platinum(II) complexes incorporating bidentate pyridyl-1,2,3-triazole “click” ligands. J Inorg Biochem 2016; 165:92-99. [DOI: 10.1016/j.jinorgbio.2016.06.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 05/16/2016] [Accepted: 06/14/2016] [Indexed: 01/04/2023]
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14
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Kumar SV, Scottwell SØ, Waugh E, McAdam CJ, Hanton LR, Brooks HJL, Crowley JD. Antimicrobial Properties of Tris(homoleptic) Ruthenium(II) 2-Pyridyl-1,2,3-triazole “Click” Complexes against Pathogenic Bacteria, Including Methicillin-Resistant Staphylococcus aureus (MRSA). Inorg Chem 2016; 55:9767-9777. [DOI: 10.1021/acs.inorgchem.6b01574] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Sreedhar V. Kumar
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
- Department
of Microbiology and Immunology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Synøve Ø. Scottwell
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
- Department
of Microbiology and Immunology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Emily Waugh
- Department
of Microbiology and Immunology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin, New Zealand
| | - C. John McAdam
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Lyall R. Hanton
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Heather J. L. Brooks
- Department
of Microbiology and Immunology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin, New Zealand
| | - James D. Crowley
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
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15
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Hostachy S, Swiecicki JM, Sandt C, Delsuc N, Policar C. Photophysical properties of single core multimodal probe for imaging (SCoMPI) in a membrane model and in cells. Dalton Trans 2016; 45:2791-5. [DOI: 10.1039/c5dt03819g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An unexpected strong luminescence enhancement of a bimodal ReCO probe grafted onto a CPP accurately characterized in a lipid environment.
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Affiliation(s)
- S. Hostachy
- Ecole Normale Supérieure-PSL Research University
- Département de Chimie
- Sorbonne Universités – UPMC Univ Paris 06
- UMR 7203 CNRS-ENS-UPMC LBM
- 75005 Paris
| | - J.-M. Swiecicki
- Ecole Normale Supérieure-PSL Research University
- Département de Chimie
- Sorbonne Universités – UPMC Univ Paris 06
- UMR 7203 CNRS-ENS-UPMC LBM
- 75005 Paris
| | - C. Sandt
- Synchrotron SOLEIL Saint-Aubin
- Gif-sur-Yvette Cedex
- France
| | - N. Delsuc
- Ecole Normale Supérieure-PSL Research University
- Département de Chimie
- Sorbonne Universités – UPMC Univ Paris 06
- UMR 7203 CNRS-ENS-UPMC LBM
- 75005 Paris
| | - C. Policar
- Ecole Normale Supérieure-PSL Research University
- Département de Chimie
- Sorbonne Universités – UPMC Univ Paris 06
- UMR 7203 CNRS-ENS-UPMC LBM
- 75005 Paris
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16
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Connell TU, James JL, White AR, Donnelly PS. Protein Labelling with Versatile Phosphorescent Metal Complexes for Live Cell Luminescence Imaging. Chemistry 2015; 21:14146-55. [PMID: 26264214 DOI: 10.1002/chem.201501630] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Indexed: 01/01/2023]
Abstract
To take advantage of the luminescent properties of d(6) transition metal complexes to label proteins, versatile bifunctional ligands were prepared. Ligands that contain a 1,2,3-triazole heterocycle were synthesised using Cu(I) catalysed azide-alkyne cycloaddition "click" chemistry and were used to form phosphorescent Ir(III) and Ru(II) complexes. Their emission properties were readily tuned, by changing either the metal ion or the co-ligands. The complexes were tethered to the metalloprotein transferrin using several conjugation strategies. The Ir(III)/Ru(II)-protein conjugates could be visualised in cancer cells using live cell imaging for extended periods without significant photobleaching. These versatile phosphorescent protein-labelling agents could be widely applied to other proteins and biomolecules and are useful alternatives to conventional organic fluorophores for several applications.
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Affiliation(s)
- Timothy U Connell
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, Victoria 3010 (Australia)
| | - Janine L James
- Department of Pathology, The University of Melbourne, Melbourne, Victoria 3010 (Australia)
| | - Anthony R White
- Department of Pathology, The University of Melbourne, Melbourne, Victoria 3010 (Australia)
| | - Paul S Donnelly
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, Victoria 3010 (Australia).
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17
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Yazdani A, Janzen N, Banevicius L, Czorny S, Valliant JF. Imidazole-Based [2 + 1] Re(I)/99mTc(I) Complexes as Isostructural Nuclear and Optical Probes. Inorg Chem 2015; 54:1728-36. [PMID: 25634699 DOI: 10.1021/ic502663p] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Abdolreza Yazdani
- Department of Chemistry
and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - Nancy Janzen
- Centre for Probe Development and Commercialization, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - Laura Banevicius
- Centre for Probe Development and Commercialization, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - Shannon Czorny
- Centre for Probe Development and Commercialization, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - John F. Valliant
- Department of Chemistry
and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
- Centre for Probe Development and Commercialization, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
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18
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Lo WKC, Huff GS, Cubanski JR, Kennedy ADW, McAdam CJ, McMorran DA, Gordon KC, Crowley JD. Comparison of inverse and regular 2-pyridyl-1,2,3-triazole "click" complexes: structures, stability, electrochemical, and photophysical properties. Inorg Chem 2015; 54:1572-87. [PMID: 25615621 DOI: 10.1021/ic502557w] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Two inverse 2-pyridyl-1,2,3-triazole "click" ligands, 2-(4-phenyl-1H-1,2,3-triazol-1-yl)pyridine and 2-(4-benzyl-1H-1,2,3-triazol-1-yl)pyridine, and their palladium(II), platinum(II), rhenium(I), and ruthenium(II) complexes have been synthesized in good to excellent yields. The properties of these inverse "click" complexes have been compared to the isomeric regular compounds using a variety of techniques. X-ray crystallographic analysis shows that the regular and inverse complexes are structurally very similar. However, the chemical and physical properties of the isomers are quite different. Ligand exchange studies and density functional theory (DFT) calculations indicate that metal complexes of the regular 2-(1-R-1H-1,2,3-triazol-4-yl)pyridine (R = phenyl, benzyl) ligands are more stable than those formed with the inverse 2-(4-R-1H-1,2,3-triazol-1-yl)pyridine (R = phenyl, benzyl) "click" chelators. Additionally, the bis-2,2'-bipyridine (bpy) ruthenium(II) complexes of the "click" chelators have been shown to have short excited state lifetimes, which in the inverse triazole case, resulted in ejection of the 2-pyridyl-1,2,3-triazole ligand from the complex. Under identical conditions, the isomeric regular 2-pyridyl-1,2,3-triazole ruthenium(II) bpy complexes are photochemically inert. The absorption spectra of the inverse rhenium(I) and platinum(II) complexes are red-shifted compared to the regular compounds. It is shown that conjugation between the substituent group R and triazolyl unit has a negligible effect on the photophysical properties of the complexes. The inverse rhenium(I) complexes have large Stokes shifts, long metal-to-ligand charge transfer (MLCT) excited state lifetimes, and respectable quantum yields which are relatively solvent insensitive.
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Affiliation(s)
- Warrick K C Lo
- Department of Chemistry, University of Otago , P.O. Box 56, Dunedin 9054, New Zealand
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Noor A, Huff GS, Kumar SV, Lewis JEM, Paterson BM, Schieber C, Donnelly PS, Brooks HJL, Gordon KC, Moratti SC, Crowley JD. [Re(CO)3]+ Complexes of exo-Functionalized Tridentate “Click” Macrocycles: Synthesis, Stability, Photophysical Properties, Bioconjugation, and Antibacterial Activity. Organometallics 2014. [DOI: 10.1021/om500664v] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | | | | | | | - Brett M. Paterson
- School of Chemistry and Bio21 Molecular Science Biotechnology Institute, University of Melbourne, Melbourne 3010, Australia
| | - Christine Schieber
- School of Chemistry and Bio21 Molecular Science Biotechnology Institute, University of Melbourne, Melbourne 3010, Australia
| | - Paul S. Donnelly
- School of Chemistry and Bio21 Molecular Science Biotechnology Institute, University of Melbourne, Melbourne 3010, Australia
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