1
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Vorobyeva SN, Bautina SA, Shekhovtsov NA, Nikolaenkova EB, Sukhikh TS, Golubeva YA, Klyushova LS, Krivopalov VP, Rakhmanova MI, Gourlaouen C, Bushuev MB. N^N^C-Cyclometalated rhodium(III) complexes with isomeric pyrimidine-based ligands: unveiling the impact of isomerism on structural motifs, luminescence and cytotoxicity. Dalton Trans 2024; 53:8398-8416. [PMID: 38683023 DOI: 10.1039/d4dt00824c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
The impact of isomerism of pyrimidine-based ligands and their rhodium(III) complexes with regard to their structures and properties was investigated. Two isomeric ligands, 4-(3,5-dimethyl-1H-pyrazol-1-yl)-2,5-diphenylpyrimidine (HL2,5) and 4-(3,5-dimethyl-1H-pyrazol-1-yl)-2,6-diphenylpyrimidine (HL2,6), were synthesized. The ligands differ by the degree of steric bulk: the molecular structure of HL2,5 is more distorted due to presence of pyrazolyl and phenyl groups in the neighbouring positions 4 and 5 of the pyrimidine ring. The complexation of HL2,5 and HL2,6 with RhCl3 leads to the sp2 C-H bond activation, resulting in the isolation of two complexes, [RhL2,5(Solv)Cl2]·nEtOH and [RhL2,6(Solv)Cl2]·nEtOH (Solv = H2O, EtOH), with the deprotonated forms of the pyrazolylpyrimidine molecules which coordinate the Rh3+ ion as N^N^C-tridentate ligands. According to DFT modelling, the mechanism of the deprotonation involves (i) the C-H bond breaking in the 2-phenyl group followed by the coordination of the C atom to the Rh atom, (ii) the protonation of coordinated chlorido ligand, (iii) the ejection of the HCl molecule and (iv) the coordination of the H2O molecule. The ligand isomerism has an impact on emission properties and cytotoxicity of the complexes. Although the excited states of the complexes effectively deactivate through S0/T1 and S0/S1 crossings associated with the cleavage of the weak H2O ligands upon excitation, the [RhL2,5(Solv)Cl2]·nEtOH complex appeared to be emissive in the solid state, while [RhL2,6(Solv)Cl2]·nEtOH is non-emissive at all. The complexes show significant cytotoxic activity against cancerous HepG2 and Hep2 cell lines, with the [RhL2,6(Solv)Cl2]·nEtOH complex being more active than its isomer [RhL2,5(Solv)Cl2]·nEtOH. On the other hand, noticeable cytotoxicity of the latter against HepG2 is supplemented by its non-toxicity against non-cancerous MRC-5 cells.
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Affiliation(s)
- Sofia N Vorobyeva
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia.
| | - Sof'ya A Bautina
- Novosibirsk State University, 1, Pirogova str., Novosibirsk 630090, Russia
| | - Nikita A Shekhovtsov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia.
| | - Elena B Nikolaenkova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Taisiya S Sukhikh
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia.
| | - Yuliya A Golubeva
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia.
| | - Lyubov S Klyushova
- Institute of Molecular Biology and Biophysics, Federal Research Centre of Fundamental and Translational Medicine (IMBB FRC FTM), 2/12, Timakova str., 630060, Novosibirsk, Russia
| | - Viktor P Krivopalov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Marianna I Rakhmanova
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia.
| | - Christophe Gourlaouen
- Laboratoire de Chimie Quantique, Institut de Chimie, UMR 7177 CNRS-Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg Cedex, France
| | - Mark B Bushuev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia.
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2
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van Hilst QVC, Pearcy AC, Preston D, Wright LJ, Hartinger CG, Brooks HJL, Crowley JD. A dynamic covalent approach to [Pt nL 2n] 2n+ cages. Chem Commun (Camb) 2024; 60:4302-4305. [PMID: 38530770 DOI: 10.1039/d4cc00323c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
A dynamic covalent approach was exploited to generate a family of homometallic [PtnL2n]2n+ cage (predominantly [Pt2L4]4+ systems) architectures. The family of platinum(II) architectures were characterized using 1H nuclear magnetic resonance (NMR) and diffusion ordered spectroscopy (DOSY), electrospray ionization mass spectrometry (ESI-MS) and the molecular structures of two cages were determined by X-ray crystallography.
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Affiliation(s)
- Quinn V C van Hilst
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
- The MacDiarmid Institute, Wellington 6140, New Zealand
| | - Aston C Pearcy
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
- The MacDiarmid Institute, Wellington 6140, New Zealand
| | - Dan Preston
- Research School of Chemistry, Australian National University, Canberra ACT 0200, Australia
| | - L James Wright
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Christian G Hartinger
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Heather J L Brooks
- Department of Pathology, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - James D Crowley
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
- The MacDiarmid Institute, Wellington 6140, New Zealand
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3
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Bobylev EO, Knol RA, Mathew S, Poole DA, Kotsogianni I, Martin NI, de Bruin B, Kros A, Reek JNH. In vivo biodistribution of kinetically stable Pt 2L 4 nanospheres that show anti-cancer activity. Chem Sci 2023; 14:6943-6952. [PMID: 37389250 PMCID: PMC10306072 DOI: 10.1039/d3sc01086d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/17/2023] [Indexed: 07/01/2023] Open
Abstract
There is an increasing interest in the application of metal-organic cages (MOCs) in a biomedicinal context, as they can offer non-classical distribution in organisms compared to molecular substrates, while revealing novel cytotoxicity mechanisms. Unfortunately, many MOCs are not sufficiently stable under in vivo conditions, making it difficult to study their structure-activity relationships in living cells. As such, it is currently unclear whether MOC cytotoxicity stems from supramolecular features or their decomposition products. Herein, we describe the toxicity and photophysical properties of highly-stable rhodamine functionalized platinum-based Pt2L4 nanospheres as well as their building blocks under in vitro and in vivo conditions. We show that in both zebrafish and human cancer cell lines, the Pt2L4 nanospheres demonstrate reduced cytotoxicity and altered biodistribution within the body of zebrafish embryos compared to the building blocks. We anticipate that the composition-dependent biodistribution of Pt2L4 spheres together with their cytotoxic and photophysical properties provides the fundament for MOC application in cancer therapy.
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Affiliation(s)
- Eduard O Bobylev
- van 't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Renzo A Knol
- Dept. of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
| | - Simon Mathew
- van 't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - David A Poole
- van 't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Ioli Kotsogianni
- Biological Chemistry Group, Institute of Biology Leiden, Leiden University 2333 BE Leiden The Netherlands
| | - Nathaniel I Martin
- Biological Chemistry Group, Institute of Biology Leiden, Leiden University 2333 BE Leiden The Netherlands
| | - Bas de Bruin
- van 't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Alexander Kros
- Dept. of Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
| | - Joost N H Reek
- van 't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
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4
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Hong D, Shi L, Liu X, Ya H, Han X. Photocatalysis in Water-Soluble Supramolecular Metal Organic Complex. Molecules 2023; 28:molecules28104068. [PMID: 37241809 DOI: 10.3390/molecules28104068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/28/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
As an emerging subset of organic complexes, metal complexes have garnered considerable attention owing to their outstanding structures, properties, and applications. In this content, metal-organic cages (MOCs) with defined shapes and sizes provide internal spaces to isolate water for guest molecules, which can be selectively captured, isolated, and released to achieve control over chemical reactions. Complex supramolecules are constructed by simulating the self-assembly behavior of the molecules or structures in nature. For this purpose, massive amounts of cavity-containing supramolecules, such as metal-organic cages (MOCs), have been extensively explored for a large variety of reactions with a high degree of reactivity and selectivity. Because sunlight and water are necessary for the process of photosynthesis, water-soluble metal-organic cages (WSMOCs) are ideal platforms for photo-responsive stimulation and photo-mediated transformation by simulating photosynthesis due to their defined sizes, shapes, and high modularization of metal centers and ligands. Therefore, the design and synthesis of WSMOCs with uncommon geometries embedded with functional building units is of immense importance for artificial photo-responsive stimulation and photo-mediated transformation. In this review, we introduce the general synthetic strategies of WSMOCs and their applications in this sparking field.
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Affiliation(s)
- Dongfeng Hong
- College of Food and Drug, Henan Functional Cosmetics Engineering & Technology Research Center, Luoyang Normal University, Luoyang 471934, China
| | - Linlin Shi
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Xianghui Liu
- College of Food and Drug, Henan Functional Cosmetics Engineering & Technology Research Center, Luoyang Normal University, Luoyang 471934, China
| | - Huiyuan Ya
- College of Food and Drug, Henan Functional Cosmetics Engineering & Technology Research Center, Luoyang Normal University, Luoyang 471934, China
| | - Xin Han
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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5
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Vasdev RAS, Preston D, Casey-Stevens CA, Martí-Centelles V, Lusby PJ, Garden AL, Crowley JD. Exploiting Supramolecular Interactions to Control Isomer Distributions in Reduced-Symmetry [Pd 2L 4] 4+ Cages. Inorg Chem 2023; 62:1833-1844. [PMID: 35604785 DOI: 10.1021/acs.inorgchem.2c00937] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
High-symmetry metallosupramolecular architectures (MSAs) have been exploited for a range of applications including molecular recognition, catalysis, and drug delivery. Recently, there have been increasing efforts to enhance those applications by generating reduced-symmetry MSAs. Here we report our attempts to use supramolecular (dispersion and hydrogen-bonding) forces and solvophobic effects to generate isomerically pure [Pd2(L)4]4+ cage architectures from a family of new reduced-symmetry ditopic tripyridyl ligands. The reduced-symmetry tripyridyl ligands featured either solvophilic polyether chains, solvophobic alkyl chains, or amino substituents. We show using NMR spectroscopy, high-performance liquid chromatography, X-ray diffraction data, and density functional theory calculations that the combination of dispersion forces and solvophobic effects does not provide any control of the [Pd2(L)4]4+ isomer distribution with mixtures of all four cage isomers (HHHH, HHHT, cis-HHTT, or trans-HTHT, where H = head and T = tail) obtained in each case. More control was obtained by exploiting hydrogen-bonding interactions between amino units. While the cage assembly with a 3-amino-substituted tripyridyl ligand leads to a mixture of all four possible isomers, the related 2-amino-substituted tripyridyl ligand generated a cis-HHTT cage architecture. Formation of the cis-HHTT [Pd2(L)4]4+ cage was confirmed using NMR studies and X-ray crystallography.
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Affiliation(s)
- Roan A S Vasdev
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand.,MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6012, New Zealand
| | - Dan Preston
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand.,MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6012, New Zealand
| | - Caitlin A Casey-Stevens
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand.,MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6012, New Zealand
| | - Vicente Martí-Centelles
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, Scotland
| | - Paul J Lusby
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, Scotland
| | - Anna L Garden
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand.,MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6012, New Zealand
| | - James D Crowley
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand.,MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6012, New Zealand
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6
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Cosialls R, Simó C, Borrós S, Gómez-Vallejo V, Schmidt C, Llop J, Cuenca AB, Casini A. PET Imaging of Self-Assembled 18 F-Labelled Pd 2 L 4 Metallacages for Anticancer Drug Delivery. Chemistry 2023; 29:e202202604. [PMID: 36239701 PMCID: PMC10168593 DOI: 10.1002/chem.202202604] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Indexed: 11/07/2022]
Abstract
To advance the design of self-assembled metallosupramolecular architectures as new generation theranostic agents, the synthesis of 18 F-labelled [Pd2 L4 ]4+ metallacages is reported. Different spectroscopic and bio-analytical methods support the formation of the host-guest cage-cisplatin complex. The biodistribution profiles of one of the cages, alone or encapsulating cisplatin have been studied by PET/CT imaging in healthy mice in vivo, in combination to ICP-MS ex vivo.
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Affiliation(s)
- Raúl Cosialls
- BISi-Bonds group, Dept. of Organic and Pharmaceutical Chemistry, Institut Químic de Sarrià, URL, Vía Augusta 390, 08017, Barcelona, Spain.,Department of Organic and Inorganic Chemistry, Universidad del País Vasco (UPV/EHU), Barrio Sarriena s/n, 48940, Leioa, Bizkaia, Spain
| | - Cristina Simó
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014, San Sebastián, Gipuzkoa, Spain.,Department of Organic and Inorganic Chemistry, Universidad del País Vasco (UPV/EHU), Barrio Sarriena s/n, 48940, Leioa, Bizkaia, Spain
| | - Salvador Borrós
- Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià,URL, Vía Augusta 390, 08017, Barcelona, Spain
| | - Vanessa Gómez-Vallejo
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014, San Sebastián, Gipuzkoa, Spain
| | - Claudia Schmidt
- Chair of Medicinal and Bioinorganic chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstr. 4, 85748, Garching b. München, Germany
| | - Jordi Llop
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014, San Sebastián, Gipuzkoa, Spain
| | - Ana B Cuenca
- BISi-Bonds group, Dept. of Organic and Pharmaceutical Chemistry, Institut Químic de Sarrià, URL, Vía Augusta 390, 08017, Barcelona, Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA), Spain
| | - Angela Casini
- Chair of Medicinal and Bioinorganic chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstr. 4, 85748, Garching b. München, Germany.,Munich Data Science Institute, Technical University of Munich, 85748, Garching b. München, Germany
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7
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Metal Organic Polygons and Polyhedra: Instabilities and Remedies. INORGANICS 2023. [DOI: 10.3390/inorganics11010036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The field of coordination chemistry has undergone rapid transformation from preparation of monometallic complexes to multimetallic complexes. So far numerous multimetallic coordination complexes have been synthesized. Multimetallic coordination complexes with well-defined architectures are often called as metal organic polygons and polyhedra (MOPs). In recent past, MOPs have received tremendous attention due to their potential applicability in various emerging fields. However, the field of coordination chemistry of MOPs often suffer set back due to the instability of coordination complexes particularly in aqueous environment-mostly by aqueous solvent and atmospheric moisture. Accordingly, the fate of the field does not rely only on the water solubilities of newly synthesized MOPs but very much dependent on their stabilities both in solution and solid state. The present review discusses several methodologies to prepare MOPs and investigates their stabilities under various circumstances. Considering the potential applicability of MOPs in sustainable way, several methodologies (remedies) to enhance the stabilities of MOPs are discussed here.
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8
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Lisboa LS, Riisom M, Dunne HJ, Preston D, Jamieson SMF, Wright LJ, Hartinger CG, Crowley JD. Hydrazone- and imine-containing [PdPtL 4] 4+ cages: a comparative study of the stability and host-guest chemistry. Dalton Trans 2022; 51:18438-18445. [PMID: 36416449 DOI: 10.1039/d2dt02720h] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A new [PdPtL4]4+ heterobimetallic cage containing hydrazone linkages has been synthesised using the sub-component self-assembly approach. 1H and DOSY nuclear magnetic resonance (NMR) spectroscopy and electrospray ionisation mass spectrometry (ESIMS) data were consistent with the formation of the [PdPtL4]4+ architecture. The cage was stimulus-responsive and could be partially disassembled and reassembled by the addition of dimethylaminopyridine (DMAP) and p-tolenesulfonic acid (TsOH), respectively. Additionally, the stability of the hydrazone cage against hydrolysis in the presence of water and nucleophilic decomposition in the presence of guest molecules was compared to a previously synthesised imine-containing [PdPtL4]4+ cage. It was established that the hydrazone linkage was more resistant to hydrolysis. Furthermore, the host-guest (HG) chemistry with a series of drug and drug-like molecules was examined. The hydrazone cage was shown to interact with cisplatin while the smaller imine cage was shown to interact with 5-fluorouracil and oxaliplatin in CD3CN. No HG interactions were observed in the more polar d6-DMSO. In vitro antiproliferative activity studies demonstrated both cages were active against the cancer cell lines tested and displayed half-maximal inhibitory (IC50) values in the range of 25-35 μM. Most [PdPtL4]4+-drug mixtures tested had higher IC50 values than the hosts. However, the [PdPtL4]4+ cages, and [PdPtL4]4+:drug mixtures were less cytotoxic than the well established anticancer drugs cisplatin, oxaliplatin and 5-fluorouracil.
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Affiliation(s)
- Lynn S Lisboa
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
| | - Mie Riisom
- School of Chemistry, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Henry J Dunne
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
| | - Dan Preston
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Stephen M F Jamieson
- Auckland Cancer Society Research Centre, University of Auckland, Auckland, New Zealand
| | - L James Wright
- School of Chemistry, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Christian G Hartinger
- School of Chemistry, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - James D Crowley
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
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10
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Dasary H, Sarkar M, Chand DK. Configurational ligand isomerism in conjoined-cages. Chem Commun (Camb) 2022; 58:8480-8483. [PMID: 35792679 DOI: 10.1039/d2cc02837a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Double-decker shaped conjoined-cages of Pd3L4 formulation are prepared via self-assembly of Pd(II) with a set of three regioisomeric tridentate ligands. Alongside the targeted double-decker cage, unprecedented hour-glass shaped conjoined-cages of Pd3L4 formulation are also formed in two cases. The double-decker cage prepared from one ligand system and the hour-glass from another (but with a regioisomeric ligand) are structurally well suited to exemplify configurational ligand isomerism.
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Affiliation(s)
- Hareesha Dasary
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India.
| | - Moumita Sarkar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India.
| | - Dillip Kumar Chand
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India.
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11
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12
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Lewis JEM. Molecular engineering of confined space in metal–organic cages. Chem Commun (Camb) 2022; 58:13873-13886. [DOI: 10.1039/d2cc05560k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
The host–guest chemistry of metal–organic cages can be modified through tailoring of structural aspects such as size, shape and functionality. In this review, strategies, opportunities and challenges of such molecular engineering are discussed.
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Affiliation(s)
- James E. M. Lewis
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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13
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Affiliation(s)
- Han Vinh Huynh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore, Republic of Singapore
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14
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Tarzia A, Lewis JEM, Jelfs KE. High‐Throughput Computational Evaluation of Low Symmetry Pd
2
L
4
Cages to Aid in System Design**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106721] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Andrew Tarzia
- Department of Chemistry Molecular Sciences Research Hub Imperial College London White City Campus, Wood Lane London W12 0BZ UK
| | - James E. M. Lewis
- Department of Chemistry Molecular Sciences Research Hub Imperial College London White City Campus, Wood Lane London W12 0BZ UK
| | - Kim E. Jelfs
- Department of Chemistry Molecular Sciences Research Hub Imperial College London White City Campus, Wood Lane London W12 0BZ UK
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15
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Tarzia A, Lewis JEM, Jelfs KE. High-Throughput Computational Evaluation of Low Symmetry Pd 2 L 4 Cages to Aid in System Design*. Angew Chem Int Ed Engl 2021; 60:20879-20887. [PMID: 34254713 PMCID: PMC8518684 DOI: 10.1002/anie.202106721] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/07/2021] [Indexed: 12/12/2022]
Abstract
Unsymmetrical ditopic ligands can self-assemble into reduced-symmetry Pd2 L4 metallo-cages with anisotropic cavities, with implications for high specificity and affinity guest-binding. Mixtures of cage isomers can form, however, resulting in undesirable system heterogeneity. It is paramount to be able to design components that preferentially form a single isomer. Previous data suggested that computational methods could predict with reasonable accuracy whether unsymmetrical ligands would preferentially self-assemble into single cage isomers under constraints of geometrical mismatch. We successfully apply a collaborative computational and experimental workflow to mitigate costly trial-and-error synthetic approaches. Our rapid computational workflow constructs unsymmetrical ligands and their Pd2 L4 cage isomers, ranking the likelihood for exclusively forming cis-Pd2 L4 assemblies. From this narrowed search space, we successfully synthesised four new, low-symmetry, cis-Pd2 L4 cages.
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Affiliation(s)
- Andrew Tarzia
- Department of ChemistryMolecular Sciences Research HubImperial College LondonWhite City Campus, Wood LaneLondonW12 0BZUK
| | - James E. M. Lewis
- Department of ChemistryMolecular Sciences Research HubImperial College LondonWhite City Campus, Wood LaneLondonW12 0BZUK
| | - Kim E. Jelfs
- Department of ChemistryMolecular Sciences Research HubImperial College LondonWhite City Campus, Wood LaneLondonW12 0BZUK
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16
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Bobylev EO, Poole DA, de Bruin B, Reek JNH. How to Prepare Kinetically Stable Self-assembled Pt 12 L 24 Nanocages while Circumventing Kinetic Traps. Chemistry 2021; 27:12667-12674. [PMID: 34155700 PMCID: PMC8456849 DOI: 10.1002/chem.202101931] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Indexed: 11/26/2022]
Abstract
Supramolecular coordination-based self-assembled nanostructures have been widely studied, and currently various applications are being explored. For several applications, the stability of the nanostructure is of key importance, and this strongly depends on the metal used in the self-assembly process. Herein, design strategies and synthetic protocols to access desirable kinetically stable Pt12 L24 nanospheres are reported, and it is demonstrated that these are stable under conditions under which the palladium counterparts decompose. Descriptors previously used for palladium nanospheres are insufficient for platinum analogues, as the stronger metal-ligand bond results in a mixture of kinetically trapped structures. We report that next to the dihedral angle, the rigidity of the ditopic ligand is also a key parameter for the controlled formation of Pt12 L24 nanospheres. Catalytic amounts of coordinating additives to labilise the platinum-pyridyl bond to some extent are needed to selectively form Pt12 L24 assemblies. The formed Pt12 L24 nanospheres were demonstrated to be stable in the presence of chloride, amines and acids, unlike the palladium analogues.
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Affiliation(s)
- Eduard O. Bobylev
- Supramolecular and Homogeneous Catalysis Group, van't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
| | - David A. Poole
- Supramolecular and Homogeneous Catalysis Group, van't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
| | - Bas de Bruin
- Supramolecular and Homogeneous Catalysis Group, van't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
| | - Joost N. H. Reek
- Supramolecular and Homogeneous Catalysis Group, van't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
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17
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Pullen S, Tessarolo J, Clever GH. Increasing structural and functional complexity in self-assembled coordination cages. Chem Sci 2021; 12:7269-7293. [PMID: 34163819 PMCID: PMC8171321 DOI: 10.1039/d1sc01226f] [Citation(s) in RCA: 148] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/26/2021] [Indexed: 12/18/2022] Open
Abstract
Progress in metallo-supramolecular chemistry creates potential to synthesize functional nano systems and intelligent materials of increasing complexity. In the past four decades, metal-mediated self-assembly has produced a wide range of structural motifs such as helicates, grids, links, knots, spheres and cages, with particularly the latter ones catching growing attention, owing to their nano-scale cavities. Assemblies serving as hosts allow application as selective receptors, confined reaction environments and more. Recently, the field has made big steps forward by implementing dedicated functionality, e.g. catalytic centres or photoswitches to allow stimuli control. Besides incorporation in homoleptic systems, composed of one type of ligand, desire arose to include more than one function within the same assembly. Inspiration comes from natural enzymes that congregate, for example, a substrate recognition site, an allosteric regulator element and a reaction centre. Combining several functionalities without creating statistical mixtures, however, requires a toolbox of sophisticated assembly strategies. This review showcases the implementation of function into self-assembled cages and devises strategies to selectively form heteroleptic structures. We discuss first examples resulting from a combination of both principles, namely multicomponent multifunctional host-guest complexes, and their potential in application in areas such as sensing, catalysis, and photo-redox systems.
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Affiliation(s)
- Sonja Pullen
- Department of Chemistry and Chemical Biology, TU Dortmund University Otto-Hahn-Straße 6 44227 Dortmund Germany
- Homogeneous, Supramolecular and Bio-Inspired Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Jacopo Tessarolo
- Department of Chemistry and Chemical Biology, TU Dortmund University Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Guido H Clever
- Department of Chemistry and Chemical Biology, TU Dortmund University Otto-Hahn-Straße 6 44227 Dortmund Germany
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18
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Akine S. Control of guest binding behavior of metal-containing host molecules by ligand exchange. Dalton Trans 2021; 50:4429-4444. [PMID: 33877165 DOI: 10.1039/d1dt00048a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review describes the control of guest binding behavior of metal-containing host molecules that is driven by ligand exchange reactions at the metal centers. Recently, a vast number of metal-containing host molecules including metal-assisted self-assembled structures have been developed, and the structural transformation after construction of the host framework has now been of interest from the viewpoint of functional switching and tuning. Among the various kinds of chemical transformations, ligand exchange has a great advantage in the structural conversions of metal-containing hosts, because ligand exchange usually proceeds under mild conditions that do not affect the host framework. In this review, the structural transformations are classified into three types: (1) weak-link approach, (2) subcomponent substitution, and (3) post-metalation modification, according to the type of coordination motif. The control of their guest binding behavior by the structural transformations is discussed in detail.
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Affiliation(s)
- Shigehisa Akine
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
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19
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Guagnini F, Pedrini A, Dalcanale E, Massera C. Multidentate, V-Shaped Pyridine Building Blocks as Tectons for Crystal Engineering. Chemistry 2021; 27:4660-4669. [PMID: 33350008 DOI: 10.1002/chem.202004918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/18/2020] [Indexed: 01/13/2023]
Abstract
The formation of supramolecular structural units through self-assembly is a powerful method to design new architectures and materials endowed with specific properties. With the aim of adding a group of versatile tectons to the toolkit of crystal engineers, we have devised and synthesised four new V-shaped building blocks characterised by an aryl acetylene scaffold comprising three substituted pyridine rings connected by two triple bonds. The judicious choice of different substituents on the pyridine rings provides these tectons with distinctive steric, electrostatic and self-assembly properties, which influence their crystal structures and their ability to form co-crystals. Co-crystals of the tectons with tetraiododifluorobenzene were obtained both via traditional and mechanochemical crystallisation strategies, proving their potential use in crystal engineering. The energetic contributions of the supramolecular interactions at play in the crystal lattice have also been evaluated to better understand their nature and strength and to rationalise their role in designing molecular crystals.
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Affiliation(s)
- Francesca Guagnini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità, Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, 43123, Parma (PR), Italy
| | - Alessando Pedrini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità, Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, 43123, Parma (PR), Italy
| | - Enrico Dalcanale
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità, Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, 43123, Parma (PR), Italy
| | - Chiara Massera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità, Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, 43123, Parma (PR), Italy
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20
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Chen F, Li Y, Lin X, Qiu H, Yin S. Polymeric Systems Containing Supramolecular Coordination Complexes for Drug Delivery. Polymers (Basel) 2021; 13:370. [PMID: 33503965 PMCID: PMC7865670 DOI: 10.3390/polym13030370] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 12/24/2022] Open
Abstract
Cancer has become a common disease that seriously endangers human health and life. Up to now, the essential treatment method has been drug therapy, and drug delivery plays an important role in cancer therapy. To improve the efficiency of drug therapy, researchers are committed to improving drug delivery methods to enhance drug pharmacokinetics and cancer accumulation. Supramolecular coordination complexes (SCCs) with well-defined shapes and sizes are formed through the coordination between diverse functional organic ligands and metal ions, and they have emerged as potential components in drug delivery and cancer therapy. In particular, micelles or vesicles with the required biocompatibility and stability are synthesized using SCC-containing polymeric systems to develop novel carriers for drug delivery that possess combined properties and extended system tunability. In this study, the research status of SCC-containing polymeric systems as drug carriers and adjuvants for cancer treatment is reviewed, and a special focus is given to their design and preparation.
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Affiliation(s)
- Feng Chen
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China; (F.C.); (Y.L.); (X.L.)
| | - Yang Li
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China; (F.C.); (Y.L.); (X.L.)
| | - Xiongjie Lin
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China; (F.C.); (Y.L.); (X.L.)
| | - Huayu Qiu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China; (F.C.); (Y.L.); (X.L.)
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Shouchun Yin
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China; (F.C.); (Y.L.); (X.L.)
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21
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Percástegui E, Ronson TK, Nitschke JR. Design and Applications of Water-Soluble Coordination Cages. Chem Rev 2020; 120:13480-13544. [PMID: 33238092 PMCID: PMC7760102 DOI: 10.1021/acs.chemrev.0c00672] [Citation(s) in RCA: 236] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Indexed: 12/23/2022]
Abstract
Compartmentalization of the aqueous space within a cell is necessary for life. In similar fashion to the nanometer-scale compartments in living systems, synthetic water-soluble coordination cages (WSCCs) can isolate guest molecules and host chemical transformations. Such cages thus show promise in biological, medical, environmental, and industrial domains. This review highlights examples of three-dimensional synthetic WSCCs, offering perspectives so as to enhance their design and applications. Strategies are presented that address key challenges for the preparation of coordination cages that are soluble and stable in water. The peculiarities of guest binding in aqueous media are examined, highlighting amplified binding in water, changing guest properties, and the recognition of specific molecular targets. The properties of WSCC hosts associated with biomedical applications, and their use as vessels to carry out chemical reactions in water, are also presented. These examples sketch a blueprint for the preparation of new metal-organic containers for use in aqueous solution, as well as guidelines for the engineering of new applications in water.
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Affiliation(s)
- Edmundo
G. Percástegui
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
- Instituto
de Química, Ciudad UniversitariaUniversidad
Nacional Autónoma de México, Ciudad de México 04510, México
- Centro
Conjunto de Investigación en Química Sustentable, UAEM-UNAM, Carretera Toluca-Atlacomulco Km 14.5, Toluca, 50200 Estado de México, México
| | - Tanya K. Ronson
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
| | - Jonathan R. Nitschke
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
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22
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Brunet G, Suturina EA, George GPC, Ovens JS, Richardson P, Bucher C, Murugesu M. A Barrel‐Shaped Metal–Organic Blue‐Box Analogue with Photo‐/Redox‐Switchable Behavior. Chemistry 2020; 26:16455-16462. [DOI: 10.1002/chem.202003073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Gabriel Brunet
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | | | - Guillaume P. C. George
- Univ. Lyon ENS de Lyon Université Claude Bernard Lyon 1 Laboratoire de Chimie CNRS UMR 5182 69342 Lyon France
| | - Jeffrey S. Ovens
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Paul Richardson
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Christophe Bucher
- Univ. Lyon ENS de Lyon Université Claude Bernard Lyon 1 Laboratoire de Chimie CNRS UMR 5182 69342 Lyon France
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
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23
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Ahmedova A, Mihaylova R, Stoykova S, Mihaylova V, Paunova-Krasteva T, Mihaylov L, Stoitsova S, Nihtianova D, Momekov G, Momekova D, Yoshizawa M. Enhanced cellular uptake of platinum by a tetracationic Pt(II) nanocapsule and its implications to cancer treatment. Eur J Pharm Sci 2020; 155:105545. [PMID: 32927069 DOI: 10.1016/j.ejps.2020.105545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 08/09/2020] [Accepted: 09/06/2020] [Indexed: 12/20/2022]
Abstract
Despite the known limitations of cisplatin chemotherapy, the treatment of cancer by platinum-based drugs remains the method of choice for many oncologists. The advancement in drug delivery formulations and protocols of combined treatments provided effective tools to ameliorate the side effects of platinum-based therapies. Another approach to improve the pharmacological profiles of anticancer platinum drugs is to properly modify their structure and composition, which has produced numerous platinum complexes with improved therapeutic effect. Recently, we have demonstrated the strong anticancer potency of supramolecular nanocapsules that form by self-assembly of four bis-anthracene ligands with two metal ions, either Pt(II) or Pd(II). Herein, we focus our study on the Pt(II) nanocapsule and its uptake by two types of cancer cells, suspension cultures of HL-60 cells and the adherent cancer cells HT-29. Comparison of the platinum uptake by cancer cells treated with the nanocapsule and with cisplatin evidenced superior uptake of platinum caused by the nanocapsule, which in HT-29 and HL-60 cells prevails by 21 and 31 times, respectively. Morphological changes in the HL-60 cells induced by the Pt(II) nanocapsule were studied by transmission electron microscopy (TEM) which provided plausible explanation of the uptake results. These data corroborate also with the known nanocapsule's very high cytotoxicity, better selectivity, and lack of cross-resistance with cisplatin. Additionally, our estimations of the drug-drug interactions in combined treatments established the propensity of the nanocapsule to exert supra-additive cytotoxicity in combination with cisplatin against the bladder cancer T-24 cells. All these findings define the scope for more detailed pharmacological characterization of the presented Pt(II) nanocapsule.
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Affiliation(s)
- Anife Ahmedova
- Faculty of Chemistry and Pharmacy, Sofia University, 1, J. Bourchier blvd., Sofia 1164, Bulgaria.
| | - Rositsa Mihaylova
- Faculty of Pharmacy, Medical University - Sofia, 2 Dunav Street, Sofia 1000, Bulgaria
| | - Silviya Stoykova
- Faculty of Chemistry and Pharmacy, Sofia University, 1, J. Bourchier blvd., Sofia 1164, Bulgaria
| | - Veronika Mihaylova
- Faculty of Chemistry and Pharmacy, Sofia University, 1, J. Bourchier blvd., Sofia 1164, Bulgaria
| | - Tsvetelina Paunova-Krasteva
- Department of General Microbiology, The Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Lyuben Mihaylov
- Faculty of Chemistry and Pharmacy, Sofia University, 1, J. Bourchier blvd., Sofia 1164, Bulgaria
| | - Stoyanka Stoitsova
- Department of General Microbiology, The Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Diana Nihtianova
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria; Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Georgi Momekov
- Faculty of Pharmacy, Medical University - Sofia, 2 Dunav Street, Sofia 1000, Bulgaria
| | - Denitsa Momekova
- Faculty of Pharmacy, Medical University - Sofia, 2 Dunav Street, Sofia 1000, Bulgaria
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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24
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McNeill SM, Giles NM, Preston D, Jones PP, Crowley JD, Giles GI. Quadruply Stranded Metallo-Supramolecular Helicate [Pd 2(hextrz) 4] 4+ Acts as a Molecular Mimic of Cytolytic Peptides. Chem Res Toxicol 2020; 33:1822-1834. [PMID: 32347099 DOI: 10.1021/acs.chemrestox.0c00061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
[Pd2(hextrz)4]4+ is a quadruply stranded helicate, a novel bioinorganic complex designed to mimic the structure and function of proteins due to its high stability and supramolecular size. We have previously reported that [Pd2(hextrz)4]4+ exhibited cytotoxicity toward a range of cell lines, with IC50 values ranging from 3 to 10 μM. Here we demonstrate that [Pd2(hextrz)4]4+ kills cells by forming pores within the cell membrane, a mechanism of cell death analogous to the naturally occurring cytolytic peptides. [Pd2(hextrz)4]4+ induced cell death is characterized by an initial influx of Ca2+, followed by nuclear condensation and mitochondrial swelling. This is accompanied by progressive cell membrane damage that results in the formation of large blebs at the cell surface. This allows the efflux of molecules from the cell leading to loss of cell viability. These data suggest that it may be possible to design metallo-supramolecular complexes to mimic the cytotoxic action of pore forming proteins and peptides and so provide a new class of drug to treat cancer, autoimmune disorders, and microbial infection.
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Affiliation(s)
- Samantha M McNeill
- Department of Pharmacology and Toxicology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Niroshini M Giles
- Department of Pharmacology and Toxicology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Dan Preston
- Department of Chemistry, University of Otago, Dunedin, New Zealand
| | - Peter P Jones
- Department of Physiology and HeartOtago, University of Otago, Dunedin, New Zealand
| | - James D Crowley
- Department of Chemistry, University of Otago, Dunedin, New Zealand
| | - Gregory I Giles
- Department of Pharmacology and Toxicology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
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25
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Lisboa LS, Findlay JA, Wright LJ, Hartinger CG, Crowley JD. A Reduced‐Symmetry Heterobimetallic [PdPtL
4
]
4+
Cage: Assembly, Guest Binding, and Stimulus‐Induced Switching. Angew Chem Int Ed Engl 2020; 59:11101-11107. [DOI: 10.1002/anie.202003220] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Lynn S. Lisboa
- Department of ChemistryUniversity of Otago PO Box 56 Dunedin 9054 New Zealand
| | - James A. Findlay
- Department of ChemistryUniversity of Otago PO Box 56 Dunedin 9054 New Zealand
| | - L. James Wright
- School of Chemical SciencesUniversity of Auckland Private Bag 92019 Auckland 1142 New Zealand
| | - Christian G. Hartinger
- School of Chemical SciencesUniversity of Auckland Private Bag 92019 Auckland 1142 New Zealand
| | - James D. Crowley
- Department of ChemistryUniversity of Otago PO Box 56 Dunedin 9054 New Zealand
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26
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Lisboa LS, Findlay JA, Wright LJ, Hartinger CG, Crowley JD. A Reduced‐Symmetry Heterobimetallic [PdPtL
4
]
4+
Cage: Assembly, Guest Binding, and Stimulus‐Induced Switching. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003220] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Lynn S. Lisboa
- Department of ChemistryUniversity of Otago PO Box 56 Dunedin 9054 New Zealand
| | - James A. Findlay
- Department of ChemistryUniversity of Otago PO Box 56 Dunedin 9054 New Zealand
| | - L. James Wright
- School of Chemical SciencesUniversity of Auckland Private Bag 92019 Auckland 1142 New Zealand
| | - Christian G. Hartinger
- School of Chemical SciencesUniversity of Auckland Private Bag 92019 Auckland 1142 New Zealand
| | - James D. Crowley
- Department of ChemistryUniversity of Otago PO Box 56 Dunedin 9054 New Zealand
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27
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Lewis JEM, Tarzia A, White AJP, Jelfs KE. Conformational control of Pd 2L 4 assemblies with unsymmetrical ligands. Chem Sci 2019; 11:677-683. [PMID: 34123040 PMCID: PMC8146399 DOI: 10.1039/c9sc05534g] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 11/27/2019] [Indexed: 12/12/2022] Open
Abstract
With increasing interest in the potential utility of metallo-supramolecular architectures for applications as diverse as catalysis and drug delivery, the ability to develop more complex assemblies is keenly sought after. Despite this, symmetrical ligands have been utilised almost exclusively to simplify the self-assembly process as without a significant driving foa mixture of isomeric products will be obtained. Although a small number of unsymmetrical ligands have been shown to serendipitously form well-defined metallo-supramolecular assemblies, a more systematic study could provide generally applicable information to assist in the design of lower symmetry architectures. Pd2L4 cages are a popular class of metallo-supramolecular assembly; research seeking to introduce added complexity into their structure to further their functionality has resulted in a handful of examples of heteroleptic structures, whilst the use of unsymmetrical ligands remains underexplored. Herein we show that it is possible to design unsymmetrical ligands in which either steric or geometric constraints, or both, can be incorporated into ligand frameworks to ensure exclusive formation of single isomers of three-dimensional Pd2L4 metallo-supramolecular assemblies with high fidelity. In this manner it is possible to access Pd2L4 cage architectures of reduced symmetry, a concept that could allow for the controlled spatial segregation of different functionalities within these systems. The introduction of steric directing groups was also seen to have a profound effect on the cage structures, suggesting that simple ligand modifications could be used to engineer structural properties.
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Affiliation(s)
- James E M Lewis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
| | - Andrew Tarzia
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
| | - Andrew J P White
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
| | - Kim E Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
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28
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Sepehrpour H, Fu W, Sun Y, Stang PJ. Biomedically Relevant Self-Assembled Metallacycles and Metallacages. J Am Chem Soc 2019; 141:14005-14020. [PMID: 31419112 PMCID: PMC6744948 DOI: 10.1021/jacs.9b06222] [Citation(s) in RCA: 220] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Diverse metal-organic complexes (MOCs), shaped as rectangles, triangles, hexagons, prisms, and cages, can be formed by coordination between metal ions (Pt, Pd, Ru, Rh, Ir, Zn, Co, and Cd) and organic ligands, with potential applications as alternatives to conventional biomedical materials for therapeutic, sensing, and imaging purposes. MOCs have been investigated as anticancer drugs in the treatment of malignant tumors in lung, cervical, breast, colon, liver, prostate, ovarian, brain, stomach, bone, skin, mouth, thyroid, and other cancers. MOCs with one, two, and three cavities have also been investigated as drug carriers and prepared for the loading and release of different drugs. In addition, MOCs can target proteins by the shape effect and recognize sugars and DNA by electrostatic interactions, as well as estradiol by host-guest interactions, etc. This Perspective mainly covers achievements in the biomedical application of MOCs. We aim to identify some key trends in the reported MOC structures in relation to their biomedical activity and potential applications.
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Affiliation(s)
- Hajar Sepehrpour
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah, 84112, United States
| | - Wenxin Fu
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yan Sun
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah, 84112, United States
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Peter. J. Stang
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah, 84112, United States
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29
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Vasdev RAS, Findlay JA, Garden AL, Crowley JD. Redox active [Pd 2L 4] 4+ cages constructed from rotationally flexible 1,1'-disubstituted ferrocene ligands. Chem Commun (Camb) 2019; 55:7506-7509. [PMID: 31187814 DOI: 10.1039/c9cc03321a] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Two new ferrocene-containing [Pd2(LFc)4]4+(X-)4 (where X- = BF4- or SbF6-) self-assembled cages (C·BF4 and C·SbF6) were synthesised from the known, rotationally flexible, 1,1'-bis(3-pyridylethynyl)ferrocene ligand (LFc), and characterised by 1H, 13C and diffusion ordered (DOSY) NMR and UV-visible absorption spectroscopies, high resolution electrospray ionisation mass spectrometry (HR-ESI-MS), elemental analysis, X-ray crystallography and cyclic voltammetry (CV). The molecular structures confirmed that cage-like systems (C·BF4 and C·SbF6) were generated. Similar to related [Pd2L4]4+(X-)4, C·SbF6 was able to interact with a range of neutral and anionic guests, with p-toluenesulfonate showing the strongest association constant. Cyclic voltammetry studies revealed that the cage systems were redox active. However, the redox potential of the cage was unperturbed upon the addition of guests.
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Affiliation(s)
- Roan A S Vasdev
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand. and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - James A Findlay
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand. and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Anna L Garden
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand. and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - James D Crowley
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand. and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
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30
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Samantray S, Bandi S, Chand DK. Design of a double-decker coordination cage revisited to make new cages and exemplify ligand isomerism. Beilstein J Org Chem 2019; 15:1129-1140. [PMID: 31164949 PMCID: PMC6541329 DOI: 10.3762/bjoc.15.109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 05/08/2019] [Indexed: 01/15/2023] Open
Abstract
The complexation study of cis-protected and bare palladium(II) components with a new tridentate ligand, i.e., pyridine-3,5-diylbis(methylene) dinicotinate (L1) is the focus of this work. Complexation of cis-Pd(tmeda)(NO3)2 with L1 at a 1:1 or 3:2 ratio produced [Pd(tmeda)(L1)](NO3)2 (1a). The reaction mixture obtained at 3:2 ratio upon prolonged heating, produced a small amount of [Pd3(tmeda)3(L1)2](NO3)6 (2a). Complexation of Pd(NO3)2 with L1 at a 1:2 or 3:4 ratios afforded [Pd(L1)2](NO3)2 (3a) and [(NO3)2@Pd3(L1)4](NO3)4 (4a), respectively. The encapsulated NO3– ions of 4a undergo anion exchange with halides (F–, Cl– and Br– but not with I–) to form [(X)2@Pd3(L1)4](NO3)45a–7a. The coordination behaviour of ligand L1 and some dynamic properties of these complexes are compared with a set of known complexes prepared using the regioisomeric ligand bis(pyridin-3-ylmethyl)pyridine-3,5-dicarboxylate (L2). Importantly, a ligand isomerism phenomenon is claimed by considering complexes prepared from L1 and L2.
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Affiliation(s)
- Sagarika Samantray
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Sreenivasulu Bandi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Dillip K Chand
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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Woods B, Wenzel MN, Williams T, Thomas SR, Jenkins RL, Casini A. Exo-Functionalized Metallacages as Host-Guest Systems for the Anticancer Drug Cisplatin. Front Chem 2019; 7:68. [PMID: 30834242 PMCID: PMC6387950 DOI: 10.3389/fchem.2019.00068] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 01/24/2019] [Indexed: 12/19/2022] Open
Abstract
Within the framework of designing new self-assembled metallosupramolecular architectures for drug delivery, seven [Pd2L4]4+ metallacages (L = 2,6-bis(pyridine-3-ylethynyl)pyridine) featuring different groups in exo-position, selected to enhance the cage solubility in aqueous environment, were synthesized. Thus, carboxylic acids, sugars, and PEG groups were tethered to the bispyridyl ligands directly or via disulfide bond formation, as well as via click chemistry. The ligands and respective cages were characterized by different methods, including NMR spectroscopy and high-resolution electrospray mass spectrometry (HR-ESI-MS). While the two ligands featuring carboxylic acid-functionalized groups showed improved solubility in water, the other ligands were soluble only in organic solvents. Unfortunately, all the respective self-assembled cages were also insoluble in water. Afterwards, the encapsulation properties of the anticancer drug cisplatin in selected [Pd2L4]X4 cages (X =NO 3 - ,BF 4 - ) were studied by 1H, 1H DOSY, and 195Pt NMR spectroscopy. The effect of the counter ions as well as of the polarity of the solvent in the drug encapsulation process were also investigated, and provided useful information on the host-guest properties of these experimental drug delivery systems. Our results provide further experimental support for previous studies that suggest the desolvation of guests from surrounding solvent molecules and the resulting solvent rearrangement may actually be the primary driving force for determining guest binding affinities in metallacages, in the absence of specific functional group interactions.
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Affiliation(s)
| | | | | | | | | | - Angela Casini
- School of Chemistry, Cardiff University, Cardiff, United Kingdom
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Rota Martir D, Zysman-Colman E. Photoactive supramolecular cages incorporating Ru(ii) and Ir(iii) metal complexes. Chem Commun (Camb) 2019; 55:139-158. [DOI: 10.1039/c8cc08327d] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cage compounds incorporating phosphorescent Ru(ii) and Ir(iii) metal complexes possess a highly desirable set of optoelectronic and physical properties. This feature article summarizes the recent work on cage assemblies containing these metal complexes as photoactive units, highlighting our contribution to this growing field.
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Affiliation(s)
- Diego Rota Martir
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | - Eli Zysman-Colman
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
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Jana A, Bhowmick S, Kumar S, Singh K, Garg P, Das N. Self-assembly of Pt(II) based nanoscalar ionic hexagons and their anticancer potencies. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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35
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Ahmedova A. Biomedical Applications of Metallosupramolecular Assemblies-Structural Aspects of the Anticancer Activity. Front Chem 2018; 6:620. [PMID: 30619828 PMCID: PMC6302020 DOI: 10.3389/fchem.2018.00620] [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: 09/30/2018] [Accepted: 11/30/2018] [Indexed: 01/25/2023] Open
Abstract
The design and development of metallosupramolecular systems has resulted in construction of a myriad of fascinating structures with highly diverse properties and potential applications. Assessment of the biomedical applications of metallosupramolecular assemblies is an emerging field of research that stems from the recently demonstrated promising results on such systems. After the pioneering works of Therrien and coworkers on organometallic Ru-cages with promising anticancer properties, this topic has evolved to the more recent studies on bioactivity of supramolecular coordination complexes built from different metal ions and various multidentate ligands. Sufficient amount of data on the anticancer activity of metallosupramolecules has already been reported and allows outlining some general tendencies in the structural aspects of the biological activity. The main structural properties of the complexes that can be readily modified to enhance their activity are the size, the shape and charge of the formed complexes. Moreover, the intrinsic properties of the building components could predetermine some of the main characteristics of the overall supramolecular complex, such as its optical properties, chemical reactivity, solubility, etc., and could, thereby, define the areas of its biomedical applications. The unique structural property of most of the metallosupramolecular assemblies, however, is the presence of a discrete cavity that renders a whole range of additional applications resulting from specific host-guest interactions. The encapsulations of small bioactive or fluorescent molecules have been employed for delivery or recognition purposes in many examples. On the other hand, metallosupramolecules have been imbedded into target-specific polymeric nanoparticles that resulted in a successful combination of their therapeutic and diagnostic properties, making them promising for theranostic application in cancer treatment. The aim of this review paper is to mark out some key tendencies in the reported metallosupramolecular structures in relation with their biological activity and potential areas of biomedical application. In this way, a useful set of guidelines can be delineated to help synthetic chemists broaden the application areas of their supramolecular systems by few structural changes.
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Affiliation(s)
- Anife Ahmedova
- Laboratory of Biocoordination and Bioanalytical Chemistry, Faculty of Chemistry and Pharmacy, Sofia University, Sofia, Bulgaria
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Affiliation(s)
- Cheng‐Yi Zhu
- Lehn Institute of Functional MaterialsSchool of ChemistrySun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Mei Pan
- Lehn Institute of Functional MaterialsSchool of ChemistrySun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Cheng‐Yong Su
- Lehn Institute of Functional MaterialsSchool of ChemistrySun Yat-Sen University Guangzhou 510275 People's Republic of China
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Vasdev RAS, Gaudin LF, Preston D, Jogy JP, Giles GI, Crowley JD. Anticancer Activity and Cisplatin Binding Ability of Bis-Quinoline and Bis-Isoquinoline Derived [Pd 2L 4] 4+ Metallosupramolecular Cages. Front Chem 2018; 6:563. [PMID: 30525025 PMCID: PMC6262750 DOI: 10.3389/fchem.2018.00563] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 10/31/2018] [Indexed: 11/29/2022] Open
Abstract
New bis-quinoline (L q) and bis-isoquinoline-based (L iq) ligands have been synthesized, along with their respective homoleptic [Pd2(L q or L iq)4]4+ cages (C q and C iq). The ligands and cages were characterized by 1H, 13C and diffusion ordered (DOSY) NMR spectroscopies, high resolution electrospray ionization mass spectrometry (HR-ESIMS) and in the case of the bis-quinoline cage, X-ray crystallography. The crystal structure of the C q architecture showed that the [Pd2(L q)4]4+ cage formed a twisted meso isomer where the [Pd(quinoline)4]2+ units at either end of the cage architecture adopt the opposite twists (left and right handed). Conversely, Density Functional Theory (DFT) calculations on the C iq cage architecture indicated that a lantern shaped conformation, similar to what has been observed before for related [Pd2(L tripy)4]4+ systems (where L tripy = 2,6-bis(pyridin-3-ylethynyl)pyridine), was generated. The different cage conformations manifest different properties for the isomeric cages. The C iq cage is able to bind, weakly in acetonitrile, the anticancer drug cisplatin whereas the C q architecture shows no interaction with the guest under the same conditions. The kinetic robustness of the two cages in the presence of Cl- nucleophiles was also different. The C iq cage was completely decomposed into free L iq and [Pd(Cl)4]2- within 1 h. However, the C q cage was more long lived and was only fully decomposed after 7 h. The new ligands (L iq and L q) and the Pd(II) cage architectures (C iq and C q) were assessed for their cytotoxic properties against two cancerous cell lines (A549 lung cancer and MDA-MB-231 breast cancer) and one non-cancerous cell line (HDFa skin cells). It was found that L q and C q were both reasonably cytotoxic (IC50S ≈ 0.5 μM) against A549, while C iq was slightly less active (IC50 = 7.4 μM). L iq was not soluble enough to allow the IC50 to be determined against either of the two cancerous cell lines. However, none of the molecules showed any selectivity for the cancer cells, as they were all found to have similar cytotoxicities against HDFa skin cells (IC50 values ranged from 2.6 to 3.0 μM).
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Affiliation(s)
- Roan A. S. Vasdev
- Department of Chemistry, University of Otago, Dunedin, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
- Department of Pharmacology and Toxicology, University of Otago, Dunedin, New Zealand
| | | | - Dan Preston
- Department of Chemistry, University of Otago, Dunedin, New Zealand
| | - Jackmil P. Jogy
- Department of Pharmacology and Toxicology, University of Otago, Dunedin, New Zealand
| | - Gregory I. Giles
- Department of Pharmacology and Toxicology, University of Otago, Dunedin, New Zealand
| | - James D. Crowley
- Department of Chemistry, University of Otago, Dunedin, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
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Han J, Räder AFB, Reichart F, Aikman B, Wenzel MN, Woods B, Weinmüller M, Ludwig BS, Stürup S, Groothuis GMM, Permentier HP, Bischoff R, Kessler H, Horvatovich P, Casini A. Bioconjugation of Supramolecular Metallacages to Integrin Ligands for Targeted Delivery of Cisplatin. Bioconjug Chem 2018; 29:3856-3865. [DOI: 10.1021/acs.bioconjchem.8b00682] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Jiaying Han
- Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Andreas F. B. Räder
- Institute for Advanced Study and Center of Integrated Protein Science München (CIPSM), TU München, Department Chemie, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Florian Reichart
- Institute for Advanced Study and Center of Integrated Protein Science München (CIPSM), TU München, Department Chemie, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Brech Aikman
- School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
| | - Margot N. Wenzel
- School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
| | - Ben Woods
- School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
| | - Michael Weinmüller
- Institute for Advanced Study and Center of Integrated Protein Science München (CIPSM), TU München, Department Chemie, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Beatrice S. Ludwig
- Institute for Advanced Study and Center of Integrated Protein Science München (CIPSM), TU München, Department Chemie, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Stefan Stürup
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Geny M. M. Groothuis
- Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Hjalmar P. Permentier
- Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Rainer Bischoff
- Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Horst Kessler
- Institute for Advanced Study and Center of Integrated Protein Science München (CIPSM), TU München, Department Chemie, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Peter Horvatovich
- Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Angela Casini
- School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
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Abstract
Complexation reactions of palladium(II) nitrate with a set of 3-pyridyl appended nonchelating bidentate ligands possessing regioisomeric phenylene-diurea functionalities as spacers were carried out. The ligands utilized in this study are 1,1'-(1,2-phenylene)bis(3-(pyridin-3-yl)urea), L1; 1,1'-(1,3-phenylene)bis(3-(pyridin-3-yl)urea), L2; and 1,1'-(1,4-phenylene)bis(3-(pyridin-3-yl)urea), L3. The complexation reactions of the ligands (L1, L2, and L3) with palladium(II) produced single discrete isomeric cages (1, 2, and 3) of Pd2L4 formulation in each case and thereby illustrated ligand-isomerism in coordination cages. All 16 hydrogen atoms of eight urea moieties present in four ligand strands are delineated completely endohedrally in cage 1 and completely exohedrally in cage 3, whereas cage 2 exhibited half of the urea hydrogens in exohedral locations and the remaining half in endohedral locations. In addition to the variable number of solvent molecules, the cavities of cages 1 and 2 lodged four and two nitrate ions, respectively, using the endohedral (H)urea atoms (i.e., NH groups) as binding sites, whereas the cavity of 3 remained anion free. The abilities of the complexes 1-3 for adsorption of CO2 gas are demonstrated, and their behaviors are compared.
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Affiliation(s)
- Hareesha Dasary
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Rajamony Jagan
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Dillip Kumar Chand
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
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40
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Steel PJ, McMorran DA. Selective Anion Recognition by a Dynamic Quadruple Helicate. Chem Asian J 2018; 14:1098-1101. [PMID: 30209886 DOI: 10.1002/asia.201801262] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 09/04/2018] [Indexed: 01/06/2023]
Abstract
An M2 L4 quadruple helicate, formed by wrapping four molecules of 1,4-bis(3-pyridyloxy)benzene (L1 ) about two palladium(II) centers, is shown to bind anions within its internal cavity. 1 H NMR exchange experiments provide a quantitative measure of anion selectivity and reveal a preference for ClO4 - over the other tetrahedral anions BF4 - and ReO4 - and the octahedral anion PF6 - . X-ray crystal structures of [Pd2 (L1 )4 ]4+ helicates containing ClO4 , BF4 - and I- reveal that the cavity size can dynamically change in response to the size of the guest.
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Affiliation(s)
- Peter J Steel
- Department of Chemistry, University of Canterbury, Christchurch, 8140, New Zealand
| | - David A McMorran
- Department of Chemistry Te Tari Matauranga Mata, University of Otago, PO Box 56, Dunedin, 9054, New Zealand
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41
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Bogie PM, Holloway LR, Lyon Y, Onishi NC, Beran GJO, Julian RR, Hooley RJ. A Springloaded Metal-Ligand Mesocate Allows Access to Trapped Intermediates of Self-Assembly. Inorg Chem 2018; 57:4155-4163. [DOI: 10.1021/acs.inorgchem.8b00370] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Paul M. Bogie
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Lauren R. Holloway
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Yana Lyon
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Nicole C. Onishi
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Gregory J. O. Beran
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Ryan R. Julian
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Richard J. Hooley
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
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Casini A, Woods B, Wenzel M. The Promise of Self-Assembled 3D Supramolecular Coordination Complexes for Biomedical Applications. Inorg Chem 2017; 56:14715-14729. [PMID: 29172467 DOI: 10.1021/acs.inorgchem.7b02599] [Citation(s) in RCA: 148] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the supramolecular chemistry field, coordination-driven self-assembly has provided the basis for tremendous growth across many subdisciplines, spanning from fundamental investigations regarding the design and synthesis of new architectures to defining different practical applications. Within this framework, supramolecular coordination complexes (SCCs), defined as large chemical entities formed from smaller precursor building blocks of ionic metal nodes and organic multidentate ligands, resulting in intricate and well-defined supramolecular structures, hold great promise. Notably, interest in the construction of discrete 3D molecular architectures, such as those offered by SCCs, has experienced extraordinary progress because of their potential application as sensors, catalysts, probes, and containers and in basic host-guest chemistry. Despite numerous synthetic efforts and a number of inherent favorable properties, the field of 3D SCCs for biomedical applications is still in its infancy. This Viewpoint focuses on 3D SCCs, specifically metallacages and helicates, first briefly presenting the fundamentals in terms of the synthesis and characterization of their host-guest properties, followed by an overview of the possible biological applications with representative examples. Thus, emphasis will be given in particular to metallacages as drug delivery systems and to chiral helicates as DNA recognition domains. Overall, we will provide an update on the state-of-the-art literature and will define the challenges in this fascinating research area at the interface of different disciplines.
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Affiliation(s)
- Angela Casini
- School of Chemistry, Cardiff University , Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
| | - Benjamin Woods
- School of Chemistry, Cardiff University , Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
| | - Margot Wenzel
- School of Chemistry, Cardiff University , Main Building, Park Place, CF10 3AT Cardiff, United Kingdom
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43
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Kim TY, Digal L, Gardiner MG, Lucas NT, Crowley JD. Octahedral [Pd6
L8
]12+
Metallosupramolecular Cages: Synthesis, Structures and Guest-Encapsulation Studies. Chemistry 2017; 23:15089-15097. [DOI: 10.1002/chem.201702518] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/17/2017] [Indexed: 01/09/2023]
Affiliation(s)
- Tae Y. Kim
- Department of Chemistry; University of Otago; PO Box 56 Dunedin New Zealand
| | - Lori Digal
- Department of Chemistry; University of Otago; PO Box 56 Dunedin New Zealand
| | - Michael G. Gardiner
- School of Physical Sciences (Chemistry); University of Tasmania; Hobart Australia
| | - Nigel T. Lucas
- Department of Chemistry; 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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Bhowmick S, Jana A, Singh K, Gupta P, Gangrade A, Mandal BB, Das N. Coordination-Driven Self-Assembly of Ionic Irregular Hexagonal Metallamacrocycles via an Organometallic Clip and Their Cytotoxicity Potency. Inorg Chem 2017; 57:3615-3625. [DOI: 10.1021/acs.inorgchem.7b01561] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Sourav Bhowmick
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
| | - Achintya Jana
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
| | - Khushwant Singh
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
| | - Prerak Gupta
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Ankit Gangrade
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Biman B. Mandal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Neeladri Das
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801103, Bihar, India
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Bloch WM, Clever GH. Integrative self-sorting of coordination cages based on 'naked' metal ions. Chem Commun (Camb) 2017; 53:8506-8516. [PMID: 28661517 PMCID: PMC5672845 DOI: 10.1039/c7cc03379f] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 06/22/2017] [Indexed: 12/23/2022]
Abstract
Coordination-driven self-assembly of metal ions and organic ligands has been extensively utilised over the past four decades to access a variety of nano-sized cage assemblies, with functions ranging from sensing and catalysis to drug delivery. Many of the reported examples, however, are highly symmetric architectures that contain one type of organic ligand carrying not more than a single functionality. This contrasts significantly with the level of structural and functional complexity encountered in biological macromolecular hosts, which are able to bind and chemically convert smaller molecules in their highly-decorated internal cavities. To address this disparity, rational approaches that facilitate heteroleptic assembly by regulating integrative self-sorting of metal ions and multiple ligand components have emerged. Among these, routes to access coordination cages from 'naked' metal cations that offer more than two coordination sites are still in early development, as the complexity of the self-sorted products in terms of composition and stereochemistry presents an entropic challenge. This feature article highlights recent progress in controlling integrative self-sorting of multi-component cage systems with a focus on structures composed of 'naked' metal cations and two different ligands. Once heteroleptic self-assembly strategies find a wider implementation in supramolecular design, the resultant interplay between tailored combinations of precisely positioned substituents promises enhanced functionality in nanoscale structures.
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Affiliation(s)
- Witold M Bloch
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany.
| | - Guido H Clever
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany.
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46
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Preston D, White KF, Lewis JEM, Vasdev RAS, Abrahams BF, Crowley JD. Solid-State Gas Adsorption Studies with Discrete Palladium(II) [Pd 2 (L) 4 ] 4+ Cages. Chemistry 2017; 23:10559-10567. [PMID: 28508442 DOI: 10.1002/chem.201701477] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Indexed: 01/03/2023]
Abstract
The need for effective CO2 capture systems remains high, and due to their tunability, metallosupramolecular architectures are an attractive option for gas sorption. While the use of extended metal organic frameworks for gas adsorption has been extensively explored, the exploitation of discrete metallocage architectures to bind gases remains in its infancy. Herein the solid state gas adsorption properties of a series of [Pd2 (L)4 ]4+ lantern shaped coordination cages (L = variants of 2,6-bis(pyridin-3-ylethynyl)pyridine), which had solvent accessible internal cavities suitable for gas binding, have been investigated. The cages showed little interaction with dinitrogen gas but were able to take up CO2 . The best performing cage reversibly sorbed 1.4 mol CO2 per mol cage at 298 K, and 2.3 mol CO2 per mol cage at 258 K (1 bar). The enthalpy of binding was calculated to be 25-35 kJ mol-1 , across the number of equivalents bound, while DFT calculations on the CO2 binding in the cage gave ΔE for the cage-CO2 interaction of 23-28 kJ mol-1 , across the same range. DFT modelling suggested that the binding mode is a hydrogen bond between the carbonyl oxygen of CO2 and the internally directed hydrogen atoms of the cage.
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Affiliation(s)
- Dan Preston
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Keith F White
- School of Chemistry, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - James E M Lewis
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Roan A S Vasdev
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Brendan F Abrahams
- School of Chemistry, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - James D Crowley
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
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Jansze SM, Wise MD, Vologzhanina AV, Scopelliti R, Severin K. Pd II2L 4-type coordination cages up to three nanometers in size. Chem Sci 2017; 8:1901-1908. [PMID: 28567267 PMCID: PMC5444114 DOI: 10.1039/c6sc04732g] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 11/09/2016] [Indexed: 12/25/2022] Open
Abstract
The utilization of large ligands in coordination-based self-assembly represents an attractive strategy for the construction of supramolecular assemblies more than two nanometers in size. However, the implementation of this strategy is hampered by the fact that the preparation of such ligands often requires substantial synthetic effort. Herein, we describe a simple one-step protocol, which allows large bipyridyl ligands with a bent shape to be synthesized from easily accessible and/or commercially available starting materials. The ligands were used to construct PdII2L4-type coordination cages of unprecedented size. Furthermore, we provide evidence that these cages may be stabilized by close intramolecular packing of lipophilic ligand side chains. Packing effects of this kind are frequently encountered in protein assemblies, but they are seldom used as a design element in metallasupramolecular chemistry.
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Affiliation(s)
- Suzanne M Jansze
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Matthew D Wise
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Anna V Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences , 119991 Moscow , Russia
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
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Preston D, Lewis JEM, Crowley JD. Multicavity [PdnL4]2n+ Cages with Controlled Segregated Binding of Different Guests. J Am Chem Soc 2017; 139:2379-2386. [DOI: 10.1021/jacs.6b11982] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Dan Preston
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - James E. M. Lewis
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - James D. Crowley
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
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Self-Assembled Palladium and Platinum Coordination Cages: Photophysical Studies and Anticancer Activity. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600811] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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50
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Preston D, Barnsley JE, Gordon KC, Crowley JD. Controlled Formation of Heteroleptic [Pd2(La)2(Lb)2]4+ Cages. J Am Chem Soc 2016; 138:10578-85. [DOI: 10.1021/jacs.6b05629] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Dan Preston
- Department
of Chemistry, University of Otago,
P.O. Box 56, Dunedin 9054, New Zealand
| | - Jonathan E. Barnsley
- Department
of Chemistry, University of Otago,
P.O. Box 56, Dunedin 9054, New Zealand
| | - Keith C. Gordon
- Department
of Chemistry, University of Otago,
P.O. Box 56, Dunedin 9054, New Zealand
| | - James D. Crowley
- Department
of Chemistry, University of Otago,
P.O. Box 56, Dunedin 9054, New Zealand
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