1
|
Massaro M, Borrego-Sánchez A, Viseras-Iborra C, Cinà G, García-Villén F, Liotta LF, Lopez Galindo A, Pimentel C, Sainz-Díaz CI, Sánchez-Espejo R, Riela S. Hectorite/Phenanthroline-Based Nanomaterial as Fluorescent Sensor for Zn Ion Detection: A Theoretical and Experimental Study. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:880. [PMID: 38786838 PMCID: PMC11124426 DOI: 10.3390/nano14100880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024]
Abstract
The development of fluorescent materials that can act as sensors for the determination of metal ions in biological fluids is important since they show, among others, high sensitivity and specificity. However, most of the molecules that are used for these purposes possess a very low solubility in aqueous media, and, thus, it is necessary to adopt some derivation strategies. Clay minerals, for example, hectorite, as natural materials, are biocompatible and available in large amounts at a very low cost that have been extensively used as carrier systems for the delivery of different hydrophobic species. In the present work, we report the synthesis and characterization of a hectorite/phenanthroline nanomaterial as a potential fluorescent sensor for Zn ion detection in water. The interaction of phenanthroline with the Ht interlaminar space was thoroughly investigated, via both theoretical and experimental studies (i.e., thermogravimetry, FT-IR, UV-vis and fluorescence spectroscopies and XRD measurements), while its morphology was imaged by scanning electron microscopy. Afterwards, the possibility to use it as sensor for the detection of Zn2+ ions, in comparison to other metal ions, was investigated through fluorescent measurements, and the stability of the solid Ht/Phe/Zn complex was assessed by different experimental and theoretical measurements.
Collapse
Affiliation(s)
- Marina Massaro
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (M.M.); (G.C.)
| | - Ana Borrego-Sánchez
- Instituto de Ciencia Molecular, Universitat de València, Carrer del Catedrátic José Beltrán Martinez 2, 46980 Paterna, Spain;
| | - César Viseras-Iborra
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; (F.G.-V.); (R.S.-E.)
- Andalusian Institute of Earth Sciences, Consejo Superior de Investigaciones Científicas-University of Granada (CSIC-UGR), Av.da de las Palmeras 4, 18100 Armilla, Spain; (A.L.G.); (C.I.S.-D.)
| | - Giuseppe Cinà
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (M.M.); (G.C.)
| | - Fátima García-Villén
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; (F.G.-V.); (R.S.-E.)
| | - Leonarda F. Liotta
- Istituto per lo Studio dei Materiali Nanostrutturati-Consiglio Nazionale delle Ricerche (ISMN-CNR), Via Ugo La Malfa 153, 90146 Palermo, Italy;
| | - Alberto Lopez Galindo
- Andalusian Institute of Earth Sciences, Consejo Superior de Investigaciones Científicas-University of Granada (CSIC-UGR), Av.da de las Palmeras 4, 18100 Armilla, Spain; (A.L.G.); (C.I.S.-D.)
| | - Carlos Pimentel
- Departamento de Mineralogía y Petrología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, C/José Antonio Novais, 12, 28040 Madrid, Spain;
| | - Claro Ignacio Sainz-Díaz
- Andalusian Institute of Earth Sciences, Consejo Superior de Investigaciones Científicas-University of Granada (CSIC-UGR), Av.da de las Palmeras 4, 18100 Armilla, Spain; (A.L.G.); (C.I.S.-D.)
| | - Rita Sánchez-Espejo
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; (F.G.-V.); (R.S.-E.)
| | - Serena Riela
- Dipartimento di Scienze Chimiche (DSC), Università di Catania, Viale Andrea Doria 6, 95125 Catania, Italy
| |
Collapse
|
2
|
Ball S, Adamson JSP, Sullivan MA, Zimmermann MR, Lo V, Sanz-Hernandez M, Jiang X, Kwan AH, McKenzie ADJ, Werry EL, Knowles TPJ, Kassiou M, Meisl G, Todd MH, Rutledge PJ, Sunde M. Perphenazine-Macrocycle Conjugates Rapidly Sequester the Aβ42 Monomer and Prevent Formation of Toxic Oligomers and Amyloid. ACS Chem Neurosci 2023; 14:87-98. [PMID: 36542544 PMCID: PMC9818246 DOI: 10.1021/acschemneuro.2c00498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022] Open
Abstract
Alzheimer's disease is imposing a growing social and economic burden worldwide, and effective therapies are urgently required. One possible approach to modulation of the disease outcome is to use small molecules to limit the conversion of monomeric amyloid (Aβ42) to cytotoxic amyloid oligomers and fibrils. We have synthesized modulators of amyloid assembly that are unlike others studied to date: these compounds act primarily by sequestering the Aβ42 monomer. We provide kinetic and nuclear magnetic resonance data showing that these perphenazine conjugates divert the Aβ42 monomer into amorphous aggregates that are not cytotoxic. Rapid monomer sequestration by the compounds reduces fibril assembly, even in the presence of pre-formed fibrillar seeds. The compounds are therefore also able to disrupt monomer-dependent secondary nucleation, the autocatalytic process that generates the majority of toxic oligomers. The inhibitors have a modular design that is easily varied, aiding future exploration and use of these tools to probe the impact of distinct Aβ42 species populated during amyloid assembly.
Collapse
Affiliation(s)
- Sarah
R. Ball
- School
of Medical Sciences, The University of Sydney, Sydney, New South Wales2006, Australia
| | - Julius S. P. Adamson
- School
of Chemistry, The University of Sydney, Sydney, New South Wales2006, Australia
| | - Michael A. Sullivan
- School
of Medical Sciences, The University of Sydney, Sydney, New South Wales2006, Australia
| | - Manuela R. Zimmermann
- Centre
for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, CambridgeCB2 1EW, U.K.
| | - Victor Lo
- School
of Medical Sciences, The University of Sydney, Sydney, New South Wales2006, Australia
| | | | - Xiaofan Jiang
- School
of Chemistry, The University of Sydney, Sydney, New South Wales2006, Australia
| | - Ann H. Kwan
- School
of Life and Environmental Sciences, The
University of Sydney, Sydney, New South Wales2006, Australia
| | - André D. J. McKenzie
- School
of Chemistry, The University of Sydney, Sydney, New South Wales2006, Australia
| | - Eryn L. Werry
- School
of Chemistry, The University of Sydney, Sydney, New South Wales2006, Australia
- Brain and
Mind Centre, The University of Sydney, Sydney, New South Wales2006, Australia
| | - Tuomas P. J. Knowles
- Centre
for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, CambridgeCB2 1EW, U.K.
- Cavendish
Laboratory, University of Cambridge, CambridgeCB3 0HE, U.K.
| | - Michael Kassiou
- School
of Chemistry, The University of Sydney, Sydney, New South Wales2006, Australia
| | - Georg Meisl
- Centre
for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, CambridgeCB2 1EW, U.K.
| | - Matthew H. Todd
- School
of Pharmacy, University College London, LondonWC1N 1AX, U.K.
| | - Peter J. Rutledge
- School
of Chemistry, The University of Sydney, Sydney, New South Wales2006, Australia
| | - Margaret Sunde
- School
of Medical Sciences, The University of Sydney, Sydney, New South Wales2006, Australia
| |
Collapse
|
3
|
Mohan B, Noushija MK, Shanmugaraju S. Amino-1,8-naphthalimide-based fluorescent chemosensors for Zn(II) ion. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
4
|
Kumar S, Shandilya M, Uniyal P, Thakur S, Parihar N. Efficacy of polymeric nanofibrous membranes for proficient wastewater treatment. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04417-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
5
|
Hendi Z, Jamali S, Chabok SMJ, Jamjah A, Samouei H, Jamshidi Z. Bis-N-Heterocyclic Carbene Complexes of Coinage Metals Containing Four Naphthalimide Units: A Structure-Emission Properties Relationship Study. Inorg Chem 2021; 60:12924-12933. [PMID: 34403580 DOI: 10.1021/acs.inorgchem.1c01302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Naphthalimide derivatives provide highly versatile self-assembled systems and aggregated forms with fascinating emission properties that make them potential candidates for many applications such as bioimaging and sensing. Although various aggregated species of naphthalimide derivatives have been well documented, little is known about the correlation between their structure and photophysical properties. Here the preparation of a series of tetrameric naphthalimide molecules in which naphthalimide units are linked by bis-N-heterocyclic carbene complexes of coinage metals is described. An in-depth structural investigation into these tetramers has been carried out in solution and the solid state using spectroscopic methods, X-ray crystallography, and computational methods. The experimental and calculated data indicate that the magnitude of the intramolecular interchromophoric π-interactions increases either by an increase in the metal ionic radius or on going from the solid to the solution state. These tetrameric naphthalimide compounds show intramolecular excimeric emissions in the solid and solution phases. However, the quantum yield efficiencies of these excimeric emissions show a trend similar to that for the intramolecular π-interactions either by going from the solution to the solid state or with an increase in the metal ionic radius. Surprisingly, the amine derivative analogues of the silver(I) compound showed an unusual increase in the emission quantum yield efficiency to 92% in solution due to intramolecular hydrogen bonds between amine substituents on adjacent naphthalimde units.
Collapse
Affiliation(s)
- Zohreh Hendi
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran
| | - Sirous Jamali
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran
| | - Seyed Mohamad J Chabok
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran
| | - Ali Jamjah
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran
| | - Hamidreza Samouei
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Zahra Jamshidi
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran
| |
Collapse
|
6
|
Counsell AJ, Yu M, Shi M, Jones AT, Batten JM, Turner P, Todd MH, Rutledge PJ. Copper(ii) complexes of N-propargyl cyclam ligands reveal a range of coordination modes and colours, and unexpected reactivity. Dalton Trans 2021; 50:3931-3942. [PMID: 33635937 DOI: 10.1039/d0dt03736b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coordination chemistry of N-functionalised cyclam ligands has a rich history, yet cyclam derivatives with pendant alkynes are largely unexplored. This is despite the significant potential and burgeoning application of N-propargyl cyclams and related compounds in the creation of diversely functionalised cyclam derivatives via copper-catalysed azide-alkyne 'click' reactions. Herein we describe single crystal X-ray diffraction and spectroscopic investigations of the coordination chemistry of copper(ii) complexes of cyclam derivatives with between 1 and 4 pendant alkynes. The crystal structures of these copper complexes unexpectedly reveal a range of coordination modes, and the surprising occurrence of five unique complexes within a single recrystallisation of the tetra-N-propargyl cyclam ligand. One of these species exhibits weak intramolecular copper-alkyne coordination, and another is formed by a surprising intramolecular copper-mediated hydroalkoxylation reaction with the solvent methanol, transforming one of the pendant alkynes to an enol ether. Multiple functionalisation of the tetra-N-propargyl ligand is demonstrated via a 'tetra-click' reaction with benzyl azide, and the copper-binding behaviour of the resulting tetra-triazole ligand is characterised spectroscopically.
Collapse
Affiliation(s)
- Andrew J Counsell
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia.
| | | | | | | | | | | | | | | |
Collapse
|
7
|
|
8
|
Sethupathi M, Jayamani A, Muthusankar G, Sakthivel P, Sekar K, Gandhi S, Sengottuvelan N, Gopu G, Selvaraju C. Colorimetric and fluorescence sensing of Zn 2+ ion and its bio-imaging applications based on macrocyclic "tet a" derivative. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 207:111854. [PMID: 32302821 DOI: 10.1016/j.jphotobiol.2020.111854] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 03/04/2020] [Accepted: 03/13/2020] [Indexed: 11/28/2022]
Abstract
We report on the synthesis and characterization of trans N, N'-di-substituted macrocyclic "tet a" probe (L) for metal ion sensing. Both the colorimetric and fluorescent titration studies are performed with different metal ions. The results have suggested that the probe L is very selective and sensitive towards Zn2+ ions with significant changes in color. The pendant armed macrocyclic "tet a" probe has exhibited 1.28× 105 M-1 binding constant and virtuous selectivity for Zn2+ ion than other common metal ions. The detection limit of the probe towards Zn2+ ion is 0.027 nM. The selective sensing of Zn2+ ion is efficiently reversible with EDTA, which is demonstrated for five cycles without losing sensitivity. The time-resolved single-photon counting (TCSPC) studies have determined the average lifetime value for the probe L and L+ Zn2+ ion of 1.29 and 2.96 ns, respectively. The theoretical DFT studies have well supported the experimental outcomes. The practical application of the probe in visualizing intracellular Zn2+ ion distribution in live Artemia salina has proved the low cytotoxicity and cell membrane permeability of probe, which makes it capable of sensing Zn2+ ion in HeLa cells. Thus, the probe L can act as a selective recognition of Zn2+ ion in living cell applications.
Collapse
Affiliation(s)
- Murugan Sethupathi
- Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi, Tamil Nadu 630003, India
| | - Arumugam Jayamani
- Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi, Tamil Nadu 630003, India; Department of Chemistry, Faculty of Applied Sciences, Manav Rachna University, Faridabad, Haryana 121004, India
| | - Ganesan Muthusankar
- Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi, Tamil Nadu 630003, India
| | - Perumal Sakthivel
- Department of Chemistry, Anna University - University College of Engineering, Dindigul, Tamil Nadu 624622, India
| | - Karuppannan Sekar
- Department of Chemistry, Anna University - University College of Engineering, Dindigul, Tamil Nadu 624622, India
| | - Sivaraman Gandhi
- Institute for Stem Cell Biology and Regenerative Medicine, Bangalore, Karnataka 560065, India
| | - Nallathambi Sengottuvelan
- Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi, Tamil Nadu 630003, India.
| | - Gopalakrishnan Gopu
- Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi, Tamil Nadu 630003, India
| | - Chellappan Selvaraju
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai, Tamil Nadu 600113, India
| |
Collapse
|
9
|
Ambrosi G, Paz Clares M, Pont I, Formica M, Fusi V, Ricci A, Paoli P, Rossi P, García-España E, Inclán M. Zn 2+ and Cu 2+ complexes of a fluorescent scorpiand-type oxadiazole azamacrocyclic ligand: crystal structures, solution studies and optical properties. Dalton Trans 2020; 49:1897-1906. [PMID: 31970351 DOI: 10.1039/c9dt04764f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A ligand comprised of a macrocyclic pyridinophane core having a pendant arm containing a secondary amine group linked through a methylene spacer to a pyridyl-oxadiazole-phenyl (PyPD) fluorescent system has been prepared (L). The crystal structures of [ZnL](ClO4)2 and [CuL](ClO4)2 show that M2+ is coordinated to all the nitrogen atoms of the macrocyclic core, the secondary amine of the pendant arm and the nitrogen atom of the pyridine group of the fluorescent moiety, the latter bond being clearly weaker than the one with the pyridine of the macrocycle. Solution studies showed the formation of a highly stable Cu2+ complex with 1 : 1 stoichiometry, whereas with Zn2+ least stable complexes were formed and, given the right conditions, a [Zn3L2]6+ species was also detected, but it was not possible to isolate this species in the solid state. Following Zn2+ coordination, a strong chelation-induced enhancement of fluorescence was observed, a behaviour that was not observed with any of the other metal cations tested.
Collapse
Affiliation(s)
- Gianluca Ambrosi
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, I-61029 Urbino, Italy.
| | - M Paz Clares
- Institute of Molecular Sciences, University of Valencia, C/Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Isabel Pont
- Institute of Molecular Sciences, University of Valencia, C/Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Mauro Formica
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, I-61029 Urbino, Italy.
| | - Vieri Fusi
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, I-61029 Urbino, Italy.
| | - Angela Ricci
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, I-61029 Urbino, Italy.
| | - Paola Paoli
- Department of Industrial Engineering, University of Firenze, Via S. Marta 3, I-50139 Firenze, Italy
| | - Patrizia Rossi
- Department of Industrial Engineering, University of Firenze, Via S. Marta 3, I-50139 Firenze, Italy
| | - Enrique García-España
- Institute of Molecular Sciences, University of Valencia, C/Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Mario Inclán
- Institute of Molecular Sciences, University of Valencia, C/Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| |
Collapse
|
10
|
Fang L, Trigiante G, Crespo-Otero R, Hawes CS, Philpott MP, Jones CR, Watkinson M. Endoplasmic reticulum targeting fluorescent probes to image mobile Zn 2. Chem Sci 2019; 10:10881-10887. [PMID: 32190243 PMCID: PMC7066664 DOI: 10.1039/c9sc04300d] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 10/16/2019] [Indexed: 12/11/2022] Open
Abstract
Zn2+ plays an important role in the normal function of the endoplasmic reticulum (ER) and its deficiency can cause ER stress, which is related to a wide range of diseases. In order to provide tools to better understand the role of mobile Zn2+ in ER processes, the first custom designed ER-localised fluorescent Zn2+ probes have been developed through the introduction of a cyclohexyl sulfonylurea as an ER-targeting unit with different Zn2+ receptors. Experiments in vitro and in cellulo show that both probes have a good fluorescence switch on response to Zn2+, high selectivity over other cations, low toxicity, ER-specific targeting ability and are efficacious imaging agents for mobile Zn2+ in four different cell lines. Probe 9 has been used to detect mobile Zn2+ changes under ER stress induced by both tunicamycin or thapsigargin, which indicates that the new probes should allow a better understanding of the mechanisms cells use to respond to dysfunction of zinc homeostasis in the ER and its role in the initiation and progression of diseases to be developed.
Collapse
Affiliation(s)
- Le Fang
- School of Biological and Chemical Science , Queen Mary University of London , The Joseph Priestley Building, Mile End Road , London , E1 4NS , UK
| | - Giuseppe Trigiante
- Centre for Cutaneous Research , Institute of Cell and Molecular Science , Barts and The London School of Medicine and Dentistry , Queen Mary University of London , London E1 2AT , UK
| | - Rachel Crespo-Otero
- School of Biological and Chemical Science , Queen Mary University of London , The Joseph Priestley Building, Mile End Road , London , E1 4NS , UK
| | - Chris S Hawes
- The Lennard-Jones Laboratories , School of Chemical and Physical Science , Keele University , ST5 5BG , UK .
| | - Michael P Philpott
- Centre for Cutaneous Research , Institute of Cell and Molecular Science , Barts and The London School of Medicine and Dentistry , Queen Mary University of London , London E1 2AT , UK
| | - Christopher R Jones
- School of Biological and Chemical Science , Queen Mary University of London , The Joseph Priestley Building, Mile End Road , London , E1 4NS , UK
| | - Michael Watkinson
- The Lennard-Jones Laboratories , School of Chemical and Physical Science , Keele University , ST5 5BG , UK .
| |
Collapse
|
11
|
Fang L, Trigiante G, Crespo-Otero R, Philpott MP, Jones CR, Watkinson M. An alternative modular 'click-S NAr-click' approach to develop subcellular localised fluorescent probes to image mobile Zn 2+ . Org Biomol Chem 2019; 17:10013-10019. [PMID: 31621740 DOI: 10.1039/c9ob01855g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zn2+ is involved in a number of biological processes and its wide-ranging roles at the subcellular level, especially in specific organelles, have not yet been fully established due to a lack of tools to image it effectively. We report a new and efficient modular double 'click' approach towards a range of sub-cellular localised probes for mobile zinc. Through this methodology, endoplasmic reticulum, mitochondria and lysosome localised probes were successfully prepared which show good fluorescence responses to mobile Zn2+in vitro and in cellulo whilst a non-targeting probe was synthesized as a control. The methodology appears to have wide-utility for the generation of sub-cellular localised probes by incorporating specific organelle targeting vectors for mobile Zn2+ imaging.
Collapse
Affiliation(s)
- Le Fang
- The Joseph Priestley Building, School of Biological and Chemical Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | | | | | | | | | | |
Collapse
|
12
|
Sharma H, Sidhu JS, Hassen WM, Singh N, Dubowski JJ. Synthesis of a 3,4-Disubstituted 1,8-Naphthalimide-Based DNA Intercalator for Direct Imaging of Legionella pneumophila. ACS OMEGA 2019; 4:5829-5838. [PMID: 31001603 PMCID: PMC6463538 DOI: 10.1021/acsomega.8b03638] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 03/14/2019] [Indexed: 05/06/2023]
Abstract
The development of organic molecules to target nucleic acid is an active area of research at the interface of chemistry and biochemistry, which involves DNA binding, nuclear imaging, and antitumor studies. These molecules bind with DNA through covalent interactions, electrostatic interactions, or intercalation. However, they are less permeable to membrane, and they have a significant cytotoxicity, which limits their application under in vivo conditions. In the present work, various mono- and disubstituted 1,8-naphthalimides-based derivatives (S-12, S-13, S-15, and S-21) have been synthesized and characterized through various spectroscopic techniques. Among these, 3-amino-4-bromo-1,8-naphthalimide (S-15) was found to have an attractive water solubility and act as a nuclear imaging agent. The spectroscopic absorption and emission data showed that S-15 has a strong affinity for salmon sperm DNA with a binding constant of 6.61 × 104 M-1, and the ratiometric fluorescence intensity (I 489/I 552) of S-15 has a linear relationship in the 0-50 μM range of DNA concentrations. It intercalates with DNA through the hydrophobic planar naphthalimide core as confirmed through cyclic voltammetry, circular dichroism, 1H NMR titration, and thermal denaturation studies. Positively charged amine groups also participate in H-bonding with the bases and backbone of DNA. The S-15 intercalator showed a large Stokes shift and photostability, which made it attractive for direct imaging of Legionella pneumophila, without the need for a prior membrane permeabilization.
Collapse
Affiliation(s)
- Hemant Sharma
- Laboratory
for Quantum Semiconductors and Photon-Based BioNanotechnology, Interdisciplinary
Institute for Technological Innovation (3IT), CNRS UMI-3463, Department
of Electrical and Computer Engineering, Université de Sherbrooke, Sherbrooke, Québec J1K 0A5, Canada
| | - Jagpreet S. Sidhu
- Department
of Chemistry, Indian Institute of Technology
Ropar, Rupnagar, Punjab 140001, India
| | - Walid M. Hassen
- Laboratory
for Quantum Semiconductors and Photon-Based BioNanotechnology, Interdisciplinary
Institute for Technological Innovation (3IT), CNRS UMI-3463, Department
of Electrical and Computer Engineering, Université de Sherbrooke, Sherbrooke, Québec J1K 0A5, Canada
| | - Narinder Singh
- Department
of Chemistry, Indian Institute of Technology
Ropar, Rupnagar, Punjab 140001, India
- E-mail: (N.S.)
| | - Jan J. Dubowski
- Laboratory
for Quantum Semiconductors and Photon-Based BioNanotechnology, Interdisciplinary
Institute for Technological Innovation (3IT), CNRS UMI-3463, Department
of Electrical and Computer Engineering, Université de Sherbrooke, Sherbrooke, Québec J1K 0A5, Canada
- E-mail: (J.J.D.)
| |
Collapse
|
13
|
Calatrava-Pérez E, Delente JM, Shanmugaraju S, Hawes CS, Williams CD, Gunnlaugsson T, Scanlan EM. Glycosylated naphthalimides and naphthalimide Tröger's bases as fluorescent aggregation probes for Con A. Org Biomol Chem 2019; 17:2116-2125. [DOI: 10.1039/c8ob02980f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis of glycosylated naphthalimide compounds and their application as fluorescent probes for Concanavalin A (Con A) lectin.
Collapse
Affiliation(s)
- Elena Calatrava-Pérez
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)
- Trinity College Dublin
- The University of Dublin
- Dublin 2
- Ireland
| | - Jason M. Delente
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)
- Trinity College Dublin
- The University of Dublin
- Dublin 2
- Ireland
| | - Sankarasekaran Shanmugaraju
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)
- Trinity College Dublin
- The University of Dublin
- Dublin 2
- Ireland
| | - Chris S. Hawes
- School of Chemical and Physical Sciences
- Keele University
- Keele ST5 5BG
- UK
| | - Clive D. Williams
- School of Biochemistry and Immunology and Trinity Biomedical Sciences Institute (TBSI)
- Trinity College Dublin
- The University of Dublin
- Dublin 2
- Ireland
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)
- Trinity College Dublin
- The University of Dublin
- Dublin 2
- Ireland
| | - Eoin M. Scanlan
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)
- Trinity College Dublin
- The University of Dublin
- Dublin 2
- Ireland
| |
Collapse
|
14
|
Review on Recent Advances in Metal Ions Sensing Using Different Fluorescent Probes. J Fluoresc 2018; 28:999-1021. [DOI: 10.1007/s10895-018-2263-y] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 07/05/2018] [Indexed: 01/07/2023]
|
15
|
Highly selective and sensitive fluorescence sensing of nanomolar Zn2+ ions in aqueous medium using Calix[4]arene passivated Carbon Quantum Dots based on fluorescence enhancement: Real-time monitoring and intracellular investigation. Anal Chim Acta 2018; 1009:1-11. [DOI: 10.1016/j.aca.2017.12.048] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 12/18/2017] [Accepted: 12/27/2017] [Indexed: 01/06/2023]
|
16
|
Spain M, Wong JKH, Nagalingam G, Batten JM, Hortle E, Oehlers SH, Jiang XF, Murage HE, Orford JT, Crisologo P, Triccas JA, Rutledge PJ, Todd MH. Antitubercular Bis-Substituted Cyclam Derivatives: Structure-Activity Relationships and in Vivo Studies. J Med Chem 2018; 61:3595-3608. [PMID: 29558124 DOI: 10.1021/acs.jmedchem.7b01569] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We recently reported the discovery of nontoxic cyclam-derived compounds that are active against drug-resistant Mycobacterium tuberculosis. In this paper we report exploration of the structure-activity relationship for this class of compounds, identifying several simpler compounds with comparable activity. The most promising compound identified, possessing significantly improved water solubility, displayed high levels of bacterial clearance in an in vivo zebrafish embryo model, suggesting this compound series has promise for in vivo treatment of tuberculosis.
Collapse
Affiliation(s)
- Malcolm Spain
- School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Joseph K-H Wong
- School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Gayathri Nagalingam
- Microbial Immunity and Pathogenesis Group, Department of Infectious Diseases and Immunology, Sydney Medical School , The University of Sydney , Sydney , NSW 2006 , Australia
| | - James M Batten
- School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Elinor Hortle
- Tuberculosis Research Program , Centenary Institute, Royal Prince Alfred Hospital , Missenden Road , Camperdown, Sydney , NSW 2050 , Australia
| | - Stefan H Oehlers
- Central Clinical School, Sydney Medical School , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Xiao Fan Jiang
- School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Hasini E Murage
- School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Jack T Orford
- School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Patrick Crisologo
- School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - James A Triccas
- Microbial Immunity and Pathogenesis Group, Department of Infectious Diseases and Immunology, Sydney Medical School , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Peter J Rutledge
- School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Matthew H Todd
- School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| |
Collapse
|
17
|
Fluorescent and colourimetric 1, 8-naphthalimide-appended chemosensors for the tracking of metal ions: selected examples from the year 2010 to 2017. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0411-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
18
|
Recent Advances in Macrocyclic Fluorescent Probes for Ion Sensing. Molecules 2017; 22:molecules22020200. [PMID: 28125069 DOI: 10.3390/molecules22020200] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 01/13/2017] [Accepted: 01/16/2017] [Indexed: 12/18/2022] Open
Abstract
Small-molecule fluorescent probes play a myriad of important roles in chemical sensing. Many such systems incorporating a receptor component designed to recognise and bind a specific analyte, and a reporter or transducer component which signals the binding event with a change in fluorescence output have been developed. Fluorescent probes use a variety of mechanisms to transmit the binding event to the reporter unit, including photoinduced electron transfer (PET), charge transfer (CT), Förster resonance energy transfer (FRET), excimer formation, and aggregation induced emission (AIE) or aggregation caused quenching (ACQ). These systems respond to a wide array of potential analytes including protons, metal cations, anions, carbohydrates, and other biomolecules. This review surveys important new fluorescence-based probes for these and other analytes that have been reported over the past five years, focusing on the most widely exploited macrocyclic recognition components, those based on cyclam, calixarenes, cyclodextrins and crown ethers; other macrocyclic and non-macrocyclic receptors are also discussed.
Collapse
|
19
|
Semakin AN, Kokuev AO, Nelyubina YV, Sukhorukov AY, Zhmurov PA, Ioffe SL, Tartakovsky VA. Construction of bis-, tris- and tetrahydrazones by addition of azoalkenes to amines and ammonia. Beilstein J Org Chem 2016; 12:2471-2477. [PMID: 28144315 PMCID: PMC5238579 DOI: 10.3762/bjoc.12.241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 11/03/2016] [Indexed: 01/30/2023] Open
Abstract
Exhaustive Michael-type alkylations of amines and ammonia with azoalkenes (generated from α-halohydrazones) were demonstrated as an efficient approach to poly(hydrazonomethyl)amines - a novel class of polynitrogen ligands. An intramolecular cyclotrimerization of C=N bonds in tris(hydrazonomethyl)amine to the respective 1,4,6,10-tetraazaadamantane derivative was demonstrated.
Collapse
Affiliation(s)
- Artem N Semakin
- Laboratory of functional organic compounds, N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospect, 47, Moscow, 119991, Russia
- Moscow Chemical Lyceum 1303, Tamozhenniy proezd, 4, Moscow, 111033, Russia
| | - Aleksandr O Kokuev
- Moscow Chemical Lyceum 1303, Tamozhenniy proezd, 4, Moscow, 111033, Russia
| | - Yulia V Nelyubina
- Laboratory for X-Ray Diffraction Studies, A.N.Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova Str. 28, Moscow, 119991, Russia
| | - Alexey Yu Sukhorukov
- Laboratory of functional organic compounds, N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospect, 47, Moscow, 119991, Russia
| | - Petr A Zhmurov
- Laboratory of functional organic compounds, N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospect, 47, Moscow, 119991, Russia
| | - Sema L Ioffe
- Laboratory of functional organic compounds, N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospect, 47, Moscow, 119991, Russia
- Moscow Chemical Lyceum 1303, Tamozhenniy proezd, 4, Moscow, 111033, Russia
| | - Vladimir A Tartakovsky
- Laboratory of functional organic compounds, N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospect, 47, Moscow, 119991, Russia
| |
Collapse
|
20
|
Shanmugaraju S, Dabadie C, Byrne K, Savyasachi AJ, Umadevi D, Schmitt W, Kitchen JA, Gunnlaugsson T. A supramolecular Tröger's base derived coordination zinc polymer for fluorescent sensing of phenolic-nitroaromatic explosives in water. Chem Sci 2016; 8:1535-1546. [PMID: 28572910 PMCID: PMC5452275 DOI: 10.1039/c6sc04367d] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 10/24/2016] [Indexed: 12/13/2022] Open
Abstract
A Tröger’s base functionalized luminescent nanoscale Zn(II) coordination polymer (TB-Zn-CP) is synthesized and used as selective fluorescence sensor for phenolic nitroaromatics in water.
A V-Shaped 4-amino-1,8-napthalimide derived tetracarboxylic acid linker (L; bis-[N-(1,3-benzenedicarboxylic acid)]-9,18-methano-1,8-naphthalimide-[b,f][1,5]diazocine) comprising the Tröger's base (TB) structural motif was rationally designed and synthesised to access a nitrogen-rich fluorescent supramolecular coordination polymer. By adopting the straight forward precipitation method, a new luminescent nanoscale Zn(ii) coordination polymer (TB-Zn-CP) was synthesized in quantitative yield using Zn(OAc)2·2H2O and tetraacid linker L (1 : 0.5) in DMF at room temperature. The phase-purity of as-synthesised TB-Zn-CP was confirmed by X-ray powder diffraction analysis, infra-red spectroscopy, and elemental analysis. Thermogravimetric analysis suggests that TB-Zn-CP is thermally stable up to 330 °C and the morphological features of TB-Zn-CP was analysed by SEM and AFM techniques. The N2 adsorption isotherm of thermally activated TB-Zn-CP at 77 K revealed a type-II reversible adsorption isotherm and the calculated Brunauer–Emmett–Teller (BET) surface area was found to be 72 m2 g–1. Furthermore, TB-Zn-CP displayed an excellent CO2 uptake capacity of 76 mg g–1 at 273 K and good adsorption selectivity for CO2 over N2 and H2. The aqueous suspension of as-synthesized TB-Zn-CP showed strong green fluorescence (λmax = 520 nm) characteristics due to the internal-charge transfer (ICT) transition and was used as a fluorescent sensor for the discriminative sensing of nitroaromatic explosives. The aqueous suspension of TB-Zn-CP showed the largest quenching responses with high selectivity for phenolic-nitroaromatics (4-NP, 2,4-DNP and PA) even in the concurrent presence of other potentially competing nitroaromatic analytes. The fluorescence titration studies also provide evidence that TB-Zn-CP detects picric acid as low as the parts per billion (26.3 ppb) range. Furthermore, the observed fluorescence quenching responses of TB-Zn-CP towards picric acid were highly reversible. The highly selective fluorescence quenching responses including the reversible detection efficiency make the nanoscale coordination polymer TB-Zn-CP a potential material for the discriminative fluorescent sensing of nitroaromatic explosives.
Collapse
Affiliation(s)
- Sankarasekaran Shanmugaraju
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) , Trinity College Dublin , The University of Dublin , Dublin 2 , Ireland . ;
| | - Charlyne Dabadie
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) , Trinity College Dublin , The University of Dublin , Dublin 2 , Ireland . ;
| | - Kevin Byrne
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) , Trinity College Dublin , The University of Dublin , Dublin 2 , Ireland
| | - Aramballi J Savyasachi
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) , Trinity College Dublin , The University of Dublin , Dublin 2 , Ireland . ;
| | - Deivasigamani Umadevi
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) , Trinity College Dublin , The University of Dublin , Dublin 2 , Ireland . ;
| | - Wolfgang Schmitt
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) , Trinity College Dublin , The University of Dublin , Dublin 2 , Ireland
| | - Jonathan A Kitchen
- Chemistry, Faculty of Natural and Environmental Sciences , University of Southampton-Highfield , Southampton , SO17 1BJ , UK
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) , Trinity College Dublin , The University of Dublin , Dublin 2 , Ireland . ;
| |
Collapse
|
21
|
Wong JK, Ast S, Yu M, Flehr R, Counsell AJ, Turner P, Crisologo P, Todd MH, Rutledge PJ. Synthesis and Evaluation of 1,8-Disubstituted-Cyclam/Naphthalimide Conjugates as Probes for Metal Ions. ChemistryOpen 2016; 5:375-85. [PMID: 27547648 PMCID: PMC4981059 DOI: 10.1002/open.201600010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Indexed: 12/21/2022] Open
Abstract
Fluorescent molecular probes for metal ions have a raft of potential applications in chemistry and biomedicine. We report the synthesis and photophysical characterisation of 1,8‐disubstituted‐cyclam/naphthalimide conjugates and their zinc complexes. An efficient synthesis of 1,8‐bis‐(2‐azidoethyl)cyclam has been developed and used to prepare 1,8‐disubstituted triazolyl‐cyclam systems, in which the pendant group is connected to triazole C4. UV/Vis and fluorescence emission spectra, zinc binding experiments, fluorescence quantum yield and lifetime measurements and pH titrations of the resultant bis‐naphthalimide ligand elucidate a complex pattern of photophysical behaviour. Important differences arise from the inclusion of two fluorophores in the one probe and from the variation of triazole substitution pattern (dye at C4 vs. N1). Introducing a second fluorophore greatly extends fluorescence lifetimes, whereas the altered substitution pattern at the cyclam amines exerts a major influence on fluorescence output and metal binding. Crystal structures of two key zinc complexes evidence variations in triazole coordination that mirror the solution‐phase behaviour of these systems.
Collapse
Affiliation(s)
| | - Sandra Ast
- School of ChemistryThe University of SydneySydneyNSW2006Australia
| | - Mingfeng Yu
- School of ChemistryThe University of SydneySydneyNSW2006Australia
| | - Roman Flehr
- Institute for ChemistryUniversity of PotsdamKarl-Liebknecht St. 24—2514476PotsdamGermany
| | | | - Peter Turner
- School of ChemistryThe University of SydneySydneyNSW2006Australia
- Crystal Structure Analysis FacilityThe University of SydneySydneyNSW2006Australia
| | | | - Matthew H. Todd
- School of ChemistryThe University of SydneySydneyNSW2006Australia
| | | |
Collapse
|
22
|
Yu M, Nagalingam G, Ellis S, Martinez E, Sintchenko V, Spain M, Rutledge PJ, Todd MH, Triccas JA. Nontoxic Metal-Cyclam Complexes, a New Class of Compounds with Potency against Drug-Resistant Mycobacterium tuberculosis. J Med Chem 2016; 59:5917-21. [PMID: 27214150 DOI: 10.1021/acs.jmedchem.6b00432] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Tuberculosis (TB) accounted for 1.5 million deaths in 2014, and new classes of anti-TB drugs are required. We report a class of functionalized 1,8-disubstituted cyclam derivatives that display low micromolar activity against pathogenic mycobacteria. These compounds inhibit intracellular growth of Mycobacterium tuberculosis, are nontoxic to human cell lines, and are active against multidrug-resistant M. tuberculosis strains, indicating a distinct mode of action. These compounds warrant further appraisal as novel agents to control TB in humans.
Collapse
Affiliation(s)
- Mingfeng Yu
- School of Chemistry, The University of Sydney , Sydney, NSW 2006, Australia
| | - Gayathri Nagalingam
- Microbial Immunity and Pathogenesis Group, Department of Infectious Diseases and Immunology, Sydney Medical School, The University of Sydney , Sydney, NSW 2006, Australia
| | - Samantha Ellis
- Microbial Immunity and Pathogenesis Group, Department of Infectious Diseases and Immunology, Sydney Medical School, The University of Sydney , Sydney, NSW 2006, Australia
| | - Elena Martinez
- Centre for Infectious Diseases and Microbiology Laboratory Services, Institute of Clinical Pathology and Medical Research-Pathology West, Westmead Hospital, Westmead, NSW 2145, Australia
| | - Vitali Sintchenko
- Centre for Infectious Diseases and Microbiology Laboratory Services, Institute of Clinical Pathology and Medical Research-Pathology West, Westmead Hospital, Westmead, NSW 2145, Australia
| | - Malcolm Spain
- School of Chemistry, The University of Sydney , Sydney, NSW 2006, Australia
| | - Peter J Rutledge
- School of Chemistry, The University of Sydney , Sydney, NSW 2006, Australia
| | - Matthew H Todd
- School of Chemistry, The University of Sydney , Sydney, NSW 2006, Australia
| | - James A Triccas
- Microbial Immunity and Pathogenesis Group, Department of Infectious Diseases and Immunology, Sydney Medical School, The University of Sydney , Sydney, NSW 2006, Australia
| |
Collapse
|
23
|
Felten AS, Petry N, Henry B, Pellegrini-Moïse N, Selmeczi K. C-Functionalized chiral dioxocyclam and cyclam derivatives with 1,2,3-triazole units: synthesis, complexation properties and crystal structures of copper(ii) complexes. NEW J CHEM 2016. [DOI: 10.1039/c5nj01927c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
NewC-functionalized dioxocyclam and cyclam derivatives with 1,2,3-triazoles attached to carbon atoms within the skeleton were designed as valuable bifunctional chelators for molecular imaging.
Collapse
Affiliation(s)
- A.-S. Felten
- Université de Lorraine
- UMR 7565 SRSMC
- 54506 Vandœuvre-lès-Nancy
- France
- CNRS
| | - N. Petry
- Université de Lorraine
- UMR 7565 SRSMC
- 54506 Vandœuvre-lès-Nancy
- France
- CNRS
| | - B. Henry
- Université de Lorraine
- UMR 7565 SRSMC
- 54506 Vandœuvre-lès-Nancy
- France
- CNRS
| | | | - K. Selmeczi
- Université de Lorraine
- UMR 7565 SRSMC
- 54506 Vandœuvre-lès-Nancy
- France
- CNRS
| |
Collapse
|
24
|
Rodríguez-Rodríguez A, Halime Z, Lima LMP, Beyler M, Deniaud D, Le Poul N, Delgado R, Platas-Iglesias C, Patinec V, Tripier R. Cyclams with Ambidentate Methylthiazolyl Pendants for Stable, Inert, and Selective Cu(II) Coordination. Inorg Chem 2015; 55:619-32. [DOI: 10.1021/acs.inorgchem.5b01779] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aurora Rodríguez-Rodríguez
- UFR des
Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521, 6 avenue Victor le Gorgeu, C.S. 93837, 29238 Brest Cedex 3, France
| | - Zakaria Halime
- UFR des
Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521, 6 avenue Victor le Gorgeu, C.S. 93837, 29238 Brest Cedex 3, France
| | - Luís M. P. Lima
- Instituto de Tecnologia Química e Biológica
António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Maryline Beyler
- UFR des
Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521, 6 avenue Victor le Gorgeu, C.S. 93837, 29238 Brest Cedex 3, France
| | - David Deniaud
- UFR Sciences et Techniques, Université de Nantes, UMR-CNRS 6230, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Nicolas Le Poul
- UFR des
Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521, 6 avenue Victor le Gorgeu, C.S. 93837, 29238 Brest Cedex 3, France
| | - Rita Delgado
- Instituto de Tecnologia Química e Biológica
António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Carlos Platas-Iglesias
- Grupo QUICOOR, Centro de Investigaciones
Científicas Avanzadas (CICA) and Departamento de Química
Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus
da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Véronique Patinec
- UFR des
Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521, 6 avenue Victor le Gorgeu, C.S. 93837, 29238 Brest Cedex 3, France
| | - Raphaël Tripier
- UFR des
Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521, 6 avenue Victor le Gorgeu, C.S. 93837, 29238 Brest Cedex 3, France
| |
Collapse
|
25
|
De Solis S, Elisei F, Gunnlaugsson T. Lower rim amide (1,3) functionalised calix[4]arene amido-thiourea derivatives as dimetallic Zn(II) coordination complexes for anion recognition/sensing. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1079633] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Stefano De Solis
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, University of Dublin, Dublin 2, Ireland
- Department of Chemistry, Biology and Biotechnology & Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Perugia, Italy
| | - Fausto Elisei
- Department of Chemistry, Biology and Biotechnology & Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Perugia, Italy
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, University of Dublin, Dublin 2, Ireland
| |
Collapse
|
26
|
Oba Y, Mochida T. Thermal properties and crystal structures of cobalt(III)–cyclam complexes with the bis(trifluoromethanesulfonyl)amide anion (cyclam = 1,4,8,11-tetraazacyclotetradecane). Polyhedron 2015. [DOI: 10.1016/j.poly.2015.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
27
|
Zhang Y, Gao YG, Shi YD, Tan LQ, Yue JS, Lu ZL. [12]aneN3-based BODIPY as a selective and sensitive off–on sensor for the sequential recognition of Cu2+ ions and ADP. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.05.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
28
|
Ast S, Kuke S, Rutledge PJ, Todd MH. Using Click Chemistry to Tune the Properties and the Fluorescence Response Mechanism of Structurally Similar Probes for Metal Ions. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402811] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
29
|
|
30
|
Pancholi J, Hodson DJ, Jobe K, Rutter GA, Goldup SM, Watkinson M. Biologically targeted probes for Zn 2+: a diversity oriented modular "click-S NAr-click" approach†Electronic supplementary information (ESI) available: Full experimental details including characterisation of all novel compounds can be found in the ESI. See DOI: 10.1039/c4sc01249f. Chem Sci 2014; 5:3528-3535. [PMID: 25580213 PMCID: PMC4285101 DOI: 10.1039/c4sc01249f] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 05/26/2014] [Indexed: 12/29/2022] Open
Abstract
We describe a one-pot strategy for the high yielding, operationally simple synthesis of fluorescent probes for Zn2+ that bear biological targeting groups and exemplify the utility of our method through the preparation of a small library of sensors. Investigation of the fluorescence behaviour of our library revealed that although all behaved as expected in MeCN, under biologically relevant conditions in HEPES buffer, a plasma membrane targeting sensor displayed a dramatic switch on response to excess Zn2+ as a result of aggregation phenomena. Excitingly, in cellulo studies in mouse pancreatic islets demonstrated that this readily available sensor was indeed localised to the exterior of the plasma membrane and clearly responded to the Zn2+ co-released when the pancreatic beta cells were stimulated to release insulin. Conversely, sensors that target intracellular compartments were unaffected. These results demonstrate that this sensor has the potential to allow the real time study of insulin release from living cells and exemplifies the utility of our simple synthetic approach.
Collapse
Affiliation(s)
- J Pancholi
- School of Biological and Chemical Science , Queen Mary University of London , Mile End Road , London , E1 4NS , UK . ;
| | - D J Hodson
- Section of Cell Biology , Division of Diabetes , Endocrinology and Metabolism , Department of Medicine , Imperial College London , London , W12 0NN , UK .
| | - K Jobe
- School of Biological and Chemical Science , Queen Mary University of London , Mile End Road , London , E1 4NS , UK . ;
| | - G A Rutter
- Section of Cell Biology , Division of Diabetes , Endocrinology and Metabolism , Department of Medicine , Imperial College London , London , W12 0NN , UK .
| | - S M Goldup
- School of Biological and Chemical Science , Queen Mary University of London , Mile End Road , London , E1 4NS , UK . ;
| | - M Watkinson
- School of Biological and Chemical Science , Queen Mary University of London , Mile End Road , London , E1 4NS , UK . ;
| |
Collapse
|
31
|
Selmeczi K, Joly JP, Allali M, Yeguas V, Henry B, Ruiz-Lopez M. Evolution of the Coordination-Sphere Symmetry in Copper(II), Nickel(II), and Zinc(II) Complexes withN,N′-Double-Armed Diaza-Crown Ethers: Experimental and Theoretical Approaches. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402432] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
32
|
Designing reactivity-based responsive lanthanide probes for multicolor detection in biological systems. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2013.10.012] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
33
|
Recognition and fluorescent sensing of zinc ions using organic fluorophores-based sensor molecules. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2014. [DOI: 10.1007/s13738-014-0484-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
34
|
Kaleeswaran P, Azath IA, Tharmaraj V, Pitchumani K. A Ratiometric Tetrazolylpyridine-Based “Turn-On” Fluorescent Chemosensor for Zinc(II) Ion in Aqueous Media. Chempluschem 2014. [DOI: 10.1002/cplu.201402126] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
35
|
Yu M, Ast S, Yu Q, Lo ATS, Flehr R, Todd MH, Rutledge PJ. Incorporating a piperidinyl group in the fluorophore extends the fluorescence lifetime of click-derived cyclam-naphthalimide conjugates. PLoS One 2014; 9:e100761. [PMID: 24983863 PMCID: PMC4077572 DOI: 10.1371/journal.pone.0100761] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 05/28/2014] [Indexed: 01/12/2023] Open
Abstract
Ligands incorporating a tetraazamacrocycle receptor, a ‘click’- derived triazole and a 1,8-naphthalimide fluorophore have proven utility as probes for metal ions. Three new cyclam-based molecular probes are reported, in which a piperidinyl group has been introduced at the 4-position of the naphthalimide fluorophore. These compounds have been synthesized using the copper(I)-catalyzed azide-alkyne Huisgen cycloaddition and their photophysical properties studied in detail. The alkylamino group induces the expected red-shift in absorption and emission spectra relative to the simple naphthalimide derivatives and gives rise to extended fluorescence lifetimes in aqueous buffer. The photophysical properties of these systems are shown to be highly solvent-dependent. Screening the fluorescence responses of the new conjugates to a wide variety of metal ions reveals significant and selective fluorescence quenching in the presence of copper(II), yet no fluorescence enhancement with zinc(II) as observed previously for the simple naphthalimide derivatives. Reasons for this different behaviour are proposed. Cytotoxicity testing shows that these new cyclam-triazole-dye conjugates display little or no toxicity against either DLD-1 colon carcinoma cells or MDA-MB-231 breast carcinoma cells, suggesting a potential role for these and related systems in biological sensing applications.
Collapse
Affiliation(s)
- Mingfeng Yu
- School of Chemistry, The University of Sydney, Sydney, New South Wales, Australia
| | - Sandra Ast
- School of Chemistry, The University of Sydney, Sydney, New South Wales, Australia
| | - Qun Yu
- School of Chemistry, The University of Sydney, Sydney, New South Wales, Australia
| | - Anthony T. S. Lo
- School of Chemistry, The University of Sydney, Sydney, New South Wales, Australia
| | - Roman Flehr
- Institute for Chemistry, University of Potsdam, Potsdam, Brandenburg, Germany
| | - Matthew H. Todd
- School of Chemistry, The University of Sydney, Sydney, New South Wales, Australia
- * E-mail: (PJR); (MHT)
| | - Peter J. Rutledge
- School of Chemistry, The University of Sydney, Sydney, New South Wales, Australia
- * E-mail: (PJR); (MHT)
| |
Collapse
|
36
|
Subhan MA, Choi JH. X-ray structure and spectroscopy of novel trans-[Ni(L)(NO(3))(2)] and [Ni(L)](ClO(4))(2)·2H(2)O complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 123:410-415. [PMID: 24412795 DOI: 10.1016/j.saa.2013.12.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 12/06/2013] [Accepted: 12/11/2013] [Indexed: 06/03/2023]
Abstract
Ni(L)(NO(3))(2) (complex 1) and [Ni(L)](ClO(4))(2)·2H(2)O (complex 2) [L=3,14-diethyl-2,6,13,17-tetraazatricyclo(16.4.0.0(7,12))docosane] have been prepared and structurally characterized by single-crystal X-ray diffraction at 200K. For these constrained macrocycle complexes, nickel(II) exists in a distorted octahedral environment with the four nitrogen atoms of the macrocyclic ligands and two oxygen atoms from nitrate in axial positions in complex 1. The macrocyclic ligand in complex 1 adopts the most stable trans-III conformation. The Ni-N distances in both the complex 1 (2.094(4)-2.051(4)Å) and complex 2 (2.042(8)-1.996(7)Å), are typical but the axial ligands are coordinating, with NiO bond length, 2.198(3)Å for complex 1. The complex 2 adopts square planner geometry around the Ni(II) with four nitrogen atoms from macrocyclic ligand. The crystals are stabilized in a 3-D network by intra and intermolecular hydrogen bonds that are formed among the secondary nitrogen hydrogen atoms and nitrate in 1, and intermolecular hydrogen bonds are formed by perchlorate and NH groups in 2. The electronic absorption, IR and PL spectral properties are also discussed.
Collapse
Affiliation(s)
- Md Abdus Subhan
- Department of Chemistry, Shah Jalal University of Science and Technology, Sylhet, Bangladesh; Department of Chemistry, Andong National University, Andong 760-749, Republic of Korea.
| | - Jong-Ha Choi
- Department of Chemistry, Andong National University, Andong 760-749, Republic of Korea.
| |
Collapse
|
37
|
Panchenko PA, Fedorova OA, Fedorov YV. Fluorescent and colorimetric chemosensors for cations based on 1,8-naphthalimide derivatives: design principles and optical signalling mechanisms. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n02abeh004380] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
38
|
Yu M, Ryan TM, Ellis S, Bush AI, Triccas JA, Rutledge PJ, Todd MH. Neuroprotective peptide–macrocycle conjugates reveal complex structure–activity relationships in their interactions with amyloid β. Metallomics 2014; 6:1931-40. [DOI: 10.1039/c4mt00122b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Novel neuroprotective peptide–macrocycle conjugates exhibit complex, multifaceted structure–activity relationships in their interactions with amyloid β.
Collapse
Affiliation(s)
- Mingfeng Yu
- School of Chemistry
- The University of Sydney
- Sydney, Australia
| | - Timothy M. Ryan
- The Florey Institute of Neuroscience and Mental Health
- Parkville, Australia
| | - Samantha Ellis
- Sydney Medical School
- The University of Sydney
- Sydney, Australia
| | - Ashley I. Bush
- The Florey Institute of Neuroscience and Mental Health
- Parkville, Australia
| | | | | | - Matthew H. Todd
- School of Chemistry
- The University of Sydney
- Sydney, Australia
| |
Collapse
|
39
|
Benkhellat Z, Allali M, Beley M, Wenger E, Bernard M, Parizel N, Selmeczi K, Joly JP. Click synthesis of symmetric bis-triazol ligands and full characterisation of their copper(ii)-complexes. NEW J CHEM 2014. [DOI: 10.1039/c3nj00570d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
40
|
Guo YR, Li XR, Zhang MJ, Pan QJ, Sun ZM. Theoretical studies on the structural and spectroscopic properties of an iminocoumarin-based probe and its metal complexation: an implication for a fluorescence probe. Dalton Trans 2013; 42:13004-13. [PMID: 23872743 DOI: 10.1039/c3dt51367j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
To understand the sensing behaviors of molecular fluorescent probes, an N,N-di(picolyl)aminoethyl-iminocoumarin probe (L) and its complexation with metal(II) ions (ML, M = Mg, Ca, Zn, Cd and Hg) were examined by relativistic density functional theory (DFT). Four stable conformational isomers (labeled as g1, g2, a1 and a2) for each of them have been optimized, except for CaL having only three without the g2 isomer. All of these structures have been confirmed by frequency calculations. In the aqueous solution, the a2 isomer of the L probe was calculated to be the most stable, while the g1 isomer turns out to be energetically favorable upon binding with metal ions. At these isomeric geometries, the experimentally obtained absorption was well reproduced by calculations of time-dependent DFT (TD-DFT) and a conductor-like polarized continuum model (CPCM). A slight red-shifting from L (508 nm) to ML (516-528 nm) was found. This is due to the metal affinity that stabilizes the LUMOs of ML greater than the HOMOs. Singlet excited-state structures of L and ML (M = Zn, Cd and Hg) were fully optimized using the TD-DFT approach, giving more relaxed geometries than their respective ground-state ones. Their fluorescent emissions in the aqueous solution were calculated to be 543 and 551-560 nm, respectively, agreeing with experimental values of 543 nm for L and 558 nm for ZnL. The present study also presents theoretical support for a sensing mechanism of photo-induced charge transfer of the L probe that was proposed in the previous experiment.
Collapse
Affiliation(s)
- Yuan-Ru Guo
- Key Laboratory of Bio-based Material Science and Technology of Education Ministry, College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | | | | | | | | |
Collapse
|
41
|
Li X, Gao X, Shi W, Ma H. Design strategies for water-soluble small molecular chromogenic and fluorogenic probes. Chem Rev 2013; 114:590-659. [PMID: 24024656 DOI: 10.1021/cr300508p] [Citation(s) in RCA: 1181] [Impact Index Per Article: 107.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaohua Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | | | | | | |
Collapse
|
42
|
Liu YY, Liu J, Yang J, Liu B, Ma JF. Eight coordination compounds based on a reduced Schiff base tetraaminodiphenol macrocyclic ligand. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.03.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
43
|
Zhang Z, Wang H, Zhang H, Liu Y. Selectively Fluorescent Sensing Behavior of Phenylaza-15-crown-5-triazolyl Coumarin for Hg2+and Fe3+in Alcohol and Aqueous Media Respectively. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300216] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
44
|
|
45
|
Simmons JT, Allen JR, Morris DR, Clark RJ, Levenson CW, Davidson MW, Zhu L. Integrated and passive 1,2,3-triazolyl groups in fluorescent indicators for zinc(II) ions: thermodynamic and kinetic evaluations. Inorg Chem 2013; 52:5838-50. [PMID: 23621758 DOI: 10.1021/ic302798u] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In addition to being a covalent linker in molecular conjugation chemistry, the function of a 1,2,3-triazolyl moiety resulting from the copper(I)-catalyzed azide-alkyne cycloaddition reaction as a ligand for metal ions is receiving considerable attention. In this work, we characterize the thermodynamic and kinetic effects of incorporating a 1,2,3-triazolyl group in a multidentate ligand scaffold on metal coordination in the context of fluorescent zinc(II) indicator development. Ligands L14, BrL14, and FL14 (1,4-isomers) contain the 1,4-disubstituted-1,2,3-triazolyl group that is capable of binding with zinc(II) in conjunction with a di(2-picolylamino) (DPA) moiety within a multidentate ligand scaffold. Therefore, the 1,2,3-triazolyl in the 1,4-isomers is "integrated" in chelation. The 1,5-isomers L15, BrL15, and FL15 contain 1,2,3-triazolyls that are excluded from participating in zinc(II) coordination. These 1,2,3-triazolyls are "passive linkers". Zinc(II) complexes of 2:1 (ligand/metal) stoichiometry are identified in solution using (1)H NMR spectroscopy and isothermal titration calorimetry (ITC) and, in one case, characterized in the solid state. The 1:1 ligand/zinc(II) affinity ratio of L14 over L15, which is attributed to the affinity enhancement of a 1,2,3-triazolyl group to zinc(II) over that of the solvent acetonitrile, is quantified at 18 (-1.7 kcal/mol at 298 K) using an ITC experiment. Fluorescent ligands FL14 and FL15 are evaluated for their potential in zinc(II) sensing applications under pH neutral aqueous conditions. The 1,4-isomer FL14 binds zinc(II) both stronger and faster than the 1,5-isomer FL15. Visualization of free zinc(II) ion distribution in live HeLa cells is achieved using both FL14 and FL15. The superiority of FL14 in staining endogenous zinc(II) ions in live rat hippocampal slices is evident. In summation, this work is a fundamental study of 1,2,3-triazole coordination chemistry, with a demonstration of its utility in developing fluorescent indicators.
Collapse
Affiliation(s)
- J Tyler Simmons
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306-4390, United States
| | | | | | | | | | | | | |
Collapse
|
46
|
Abstract
The copper-catalyzed azide-alkyne "click" cycloaddition reaction is an efficient coupling reaction that results in the formation of a triazole ring. The wide range of applicable substrates for this reaction allows the construction of a variety of conjugated systems. The additional function of triazoles as metal-ion ligands has led to the click reaction being used for the construction of optical sensors for metal ions. The triazoles are integral binding elements, which are formed in an efficient modular synthesis. Herein, we review recent examples of triazoles as a metal-binding element in conjugated metal-ion sensors.
Collapse
Affiliation(s)
- Jonathan J Bryant
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | | |
Collapse
|
47
|
Selectivity in changes of fluorescence emission of 1,4-naphthoquinone derivatives by manganese and cadmium ions. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.12.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
48
|
Menelaou M, Weyhermüller T, Soler M, Aliaga-Alcalde N. Novel paramagnetic-luminescent building blocks containing manganese(II) and anthracene-based curcuminoids. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.08.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
49
|
Achar TK, Prakash V, Biswal HS, Mal P. An isoquinoline as cation assisted ON–OFF–ON fluorescence switch with methionine and fluoride ion. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.12.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
50
|
Ast S, Fischer T, Müller H, Mickler W, Schwichtenberg M, Rurack K, Holdt HJ. Integration of the 1,2,3-triazole "click" motif as a potent signalling element in metal ion responsive fluorescent probes. Chemistry 2013; 19:2990-3005. [PMID: 23319382 DOI: 10.1002/chem.201201575] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Indexed: 12/28/2022]
Abstract
In a systematic approach we synthesized a new series of fluorescent probes incorporating donor-acceptor (D-A) substituted 1,2,3-triazoles as conjugative π-linkers between the alkali metal ion receptor N-phenylaza-[18]crown-6 and different fluorophoric groups with different electron-acceptor properties (4-naphthalimide, meso-phenyl-BODIPY and 9-anthracene) and investigated their performance in organic and aqueous environments (physiological conditions). In the charge-transfer (CT) type probes 1, 2 and 7, the fluorescence is almost completely quenched by intramolecular CT (ICT) processes involving charge-separated states. In the presence of Na(+) and K(+) ICT is interrupted, which resulted in a lighting-up of the fluorescence in acetonitrile. Among the investigated fluoroionophores, compound 7, which contains a 9-anthracenyl moiety as the electron-accepting fluorophore, is the only probe which retains light-up features in water and works as a highly K(+)/Na(+)-selective probe under simulated physiological conditions. Virtually decoupled BODIPY-based 6 and photoinduced electron transfer (PET) type probes 3-5, where the 10-substituted anthracen-9-yl fluorophores are connected to the 1,2,3-triazole through a methylene spacer, show strong ion-induced fluorescence enhancement in acetonitrile, but not under physiological conditions. Electrochemical studies and theoretical calculations were used to assess and support the underlying mechanisms for the new ICT and PET 1,2,3-triazole fluoroionophores.
Collapse
Affiliation(s)
- Sandra Ast
- Institut für Chemie, Anorganische Chemie, Universität Potsdam, Karl-Liebknecht Str. 24-25, 14467 Golm, Germany
| | | | | | | | | | | | | |
Collapse
|