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Patel KB, Luhar S, Srivastava DN. Early diagnosis of autoimmune diseases through electrochemical biosensing using a modified plastic chip electrode. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:4971-4980. [PMID: 38973650 DOI: 10.1039/d4ay00789a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Detecting chronic autoimmune disorders (ADs) early reduces the risk of morbidity, disability, and mortality and offers the possibility of significant therapeutic action in a timely manner. Developing low-cost, reliable, and sensitive sensors for ADs can ensure the efficient utilization of healthcare resources at earlier stages. Here, we report on the development of an electrochemical biosensor for sensing CXCL10, a chemokine protein that serves as a biomarker for autoimmune diseases. A self-assembly strategy is used for the immobilization of biorecognition elements on a plastic chip electrode (PCE). A homemade PCE offers a versatile and cost-effective scaffold for sensing applications. Gold nanoparticles were electrochemically deposited on the electrode via the reduction of gold ions on the PCE galvanostatically. The CXCL10 antibody and recognition elements were immobilized on the gold-deposited PCE. The attachment of recognition molecules was confirmed by energy-dispersive scanning electron microscopy, atomic force microscopy, infrared spectroscopy, and electrochemical techniques. Electrochemical impedance spectroscopy (EIS) was used for the detection of CXCL10 within a concentration range spanning from pico- to micro-molar levels. The sensor exhibited remarkable linearity in both buffer and plasma solutions, with a limit of detection (LOD) of up to 0.72 pg mL-1.
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Affiliation(s)
- Kinjal B Patel
- Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364001, Gujarat, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Sunil Luhar
- Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364001, Gujarat, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Divesh N Srivastava
- Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364001, Gujarat, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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2
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Jafari M, Li Z, Song LF, Sagresti L, Brancato G, Merz KM. Thermodynamics of Metal-Acetate Interactions. J Phys Chem B 2024; 128:684-697. [PMID: 38226860 DOI: 10.1021/acs.jpcb.3c06567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Metal ions play crucial roles in protein- and ligand-mediated interactions. They not only act as catalysts to facilitate biological processes but are also important as protein structural elements. Accurately predicting metal ion interactions in computational studies has always been a challenge, and various methods have been suggested to improve these interactions. One such method is the 12-6-4 Lennard-Jones (LJ)-type nonbonded model. Using this model, it has been possible to successfully reproduce the experimental properties of metal ions in aqueous solution. The model includes induced dipole interactions typically ignored in the standard 12-6 LJ nonbonded model. In this we expand the applicability of this model to metal ion-carboxylate interactions. Using 12-6-4 parameters that reproduce the solvation free energies of the metal ions leads to an overestimation of metal ion-acetate interactions, thus, prompting us to fine-tune the model to specifically handle the latter. We also show that the standard 12-6 LJ model significantly falls short in reproducing the experimental binding free energy between acetate and 11 metal ions (Ni(II), Mg(II), Cu(II), Zn(II), Co(II), Cu(I), Fe(II), Mn(II), Cd(II), Ca(II), and Ag(I)). In this study, we describe optimized C4 parameters for the 12-6-4 LJ nonbonded model to be used with three widely employed water models (Transferable Intermolecular Potential with 3 Points (TIP3P), Simple Point Charge Extended (SPC/E), and Optimal Point Charge (OPC) water models). These parameters can accurately match the experimental binding free energy between 11 metal ions and acetate. These parameters can be applied to the study of metalloproteins and transition metal ion channels and transporters, as acetate serves as a representative of the negatively charged amino acid side chains from aspartate and glutamate.
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Affiliation(s)
- Majid Jafari
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, United States
| | - Zhen Li
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Lin Frank Song
- Biochemical and Biophysical Systems Group, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Luca Sagresti
- Scuola Normale Superiore and CSGI, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
- Istituto Nazionale di Fisica Nucleare (INFN) sezione di Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy
| | - Giuseppe Brancato
- Scuola Normale Superiore and CSGI, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
- Istituto Nazionale di Fisica Nucleare (INFN) sezione di Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy
| | - Kenneth M Merz
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, United States
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
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Uzal-Varela R, Rodríguez-Rodríguez A, Lalli D, Valencia L, Maneiro M, Botta M, Iglesias E, Esteban-Gómez D, Angelovski G, Platas-Iglesias C. Endeavor toward Redox-Responsive Transition Metal Contrast Agents Based on the Cross-Bridge Cyclam Platform. Inorg Chem 2024; 63:1575-1588. [PMID: 38198518 PMCID: PMC10806912 DOI: 10.1021/acs.inorgchem.3c03486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/21/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024]
Abstract
We present the synthesis and characterization of a series of Mn(III), Co(III), and Ni(II) complexes with cross-bridge cyclam derivatives (CB-cyclam = 1,4,8,11-tetraazabicyclo[6.6.2]hexadecane) containing acetamide or acetic acid pendant arms. The X-ray structures of [Ni(CB-TE2AM)]Cl2·2H2O and [Mn(CB-TE1AM)(OH)](PF6)2 evidence the octahedral coordination of the ligands around the Ni(II) and Mn(III) metal ions, with a terminal hydroxide ligand being coordinated to Mn(III). Cyclic voltammetry studies on solutions of the [Mn(CB-TE1AM)(OH)]2+ and [Mn(CB-TE1A)(OH)]+ complexes (0.15 M NaCl) show an intricate redox behavior with waves due to the MnIII/MnIV and MnII/MnIII pairs. The Co(III) and Ni(II) complexes with CB-TE2A and CB-TE2AM show quasi-reversible features due to the CoIII/CoII or NiII/NiIII pairs. The [Co(CB-TE2AM)]3+ complex is readily reduced by dithionite in aqueous solution, as evidenced by 1H NMR studies, but does not react with ascorbate. The [Mn(CB-TE1A)(OH)]+ complex is however reduced very quickly by ascorbate following a simple kinetic scheme (k0 = k1[AH-], where [AH-] is the ascorbate concentration and k1 = 628 ± 7 M-1 s-1). The reduction of the Mn(III) complex to Mn(II) by ascorbate provokes complex dissociation, as demonstrated by 1H nuclear magnetic relaxation dispersion studies. The [Ni(CB-TE2AM)]2+ complex shows significant chemical exchange saturation transfer effects upon saturation of the amide proton signals at 71 and 3 ppm with respect to the bulk water signal.
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Affiliation(s)
- Rocío Uzal-Varela
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
| | - Aurora Rodríguez-Rodríguez
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
| | - Daniela Lalli
- Dipartimento
di Scienze e Innovazione Tecnologica, Magnetic Resonance Platform
(PRISMA-UPO), Universitá del Piemonte
Orientale, Viale T. Michel
11, Alessandria 15121, Italy
| | - Laura Valencia
- Departamento
de Química Inorgánica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Marcosende 36310, Pontevedra, Spain
| | - Marcelino Maneiro
- Departamento
de Química Inorgánica, Facultade de Ciencias, Campus
Terra, Universidade de Santiago de Compostela, Lugo 27002, Galicia, Spain
| | - Mauro Botta
- Dipartimento
di Scienze e Innovazione Tecnologica, Magnetic Resonance Platform
(PRISMA-UPO), Universitá del Piemonte
Orientale, Viale T. Michel
11, Alessandria 15121, Italy
| | - Emilia Iglesias
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
| | - David Esteban-Gómez
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
| | - Goran Angelovski
- Laboratory
of Molecular and Cellular Neuroimaging, International Center for Primate
Brain Research (ICPBR), Center for Excellence in Brain Science and
Intelligence Technology (CEBSIT), Chinese
Academy of Sciences (CAS), Shanghai 201602, PR China
| | - Carlos Platas-Iglesias
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
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Chang MR, Rusanov DA, Arakelyan J, Alshehri M, Asaturova AV, Kireeva GS, Babak MV, Ang WH. Targeting emerging cancer hallmarks by transition metal complexes: Cancer stem cells and tumor microbiome. Part I. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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5
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Walker AN, Ayala MA, Mondal S, Bergagnini MC, Bui PJD, Chidester SN, Doeden CI, Esjornson L, Sweany BR, Garcia L, Krause JA, Oliver AG, Prior TJ, Hubin TJ. A Bridge too Far? Comparison of Transition Metal Complexes of Dibenzyltetraazamacrocycles with and without Ethylene Cross-Bridges: X-ray Crystal Structures, Kinetic Stability, and Electronic Properties. Molecules 2023; 28:895. [PMID: 36677952 PMCID: PMC9863842 DOI: 10.3390/molecules28020895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/18/2023] Open
Abstract
Tetraazamacrocycles, cyclic molecules with four nitrogen atoms, have long been known to produce highly stable transition metal complexes. Cross-bridging such molecules with two-carbon chains has been shown to enhance the stability of these complexes even further. This provides enough stability to use the resulting compounds in applications as diverse and demanding as aqueous, green oxidation catalysis all the way to drug molecules injected into humans. Although the stability of these compounds is believed to result from the increased rigidity and topological complexity imparted by the cross-bridge, there is insufficient experimental data to exclude other causes. In this study, standard organic and inorganic synthetic methods were used to produce unbridged dibenzyl tetraazamacrocycle complexes of Co, Ni, Cu, and Zn that are analogues of known cross-bridged tetraazamacrocycles and their transition metal complexes to allow direct comparison of molecules that are identical except for the cross-bridge. The syntheses of the known tetraazamacrocycles and the new transition metal complexes were successful with high yields and purity. Initial chemical characterization of the complexes was conducted by UV-Visible spectroscopy, while cyclic voltammetry showed more marked differences in electronic properties from bridged versions. Direct comparison studies of the unbridged and bridged compounds' kinetic stabilities, as demonstrated by decomposition using high acid concentration and elevated temperature, showed that the cyclen-based complex stability did not benefit from cross-bridging. This is likely due to poor complementarity with the Cu2+ ion while cyclam-based complexes benefited greatly. We conclude that ligand-metal complementarity must be maintained in order for the topological and rigidity constraints imparted by the cross-bridge to contribute significantly to complex robustness.
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Affiliation(s)
- Ashlie N. Walker
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Megan A. Ayala
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Somrita Mondal
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Mackenzie C. Bergagnini
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Phuong John D. Bui
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Stephanie N. Chidester
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Chad I. Doeden
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Louise Esjornson
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Brian R. Sweany
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Leslie Garcia
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
| | - Jeanette A. Krause
- Department of Chemistry, University of Cincinnati, Cincinnati, OH 45220, USA
| | - Allen G. Oliver
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Timothy J. Prior
- Department of Chemistry, School of Natural Sciences, University of Hull, Kingston Upon Hull HU6 7RX, UK
| | - Timothy J. Hubin
- Department of Chemistry and Physics, Southwestern Oklahoma State University, Weatherford, OK 73096, USA
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Synthesis and Characterization of Late Transition Metal Complexes of Mono-Acetate Pendant Armed Ethylene Cross-Bridged Tetraazamacrocycles with Promise as Oxidation Catalysts for Dye Bleaching. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010232. [PMID: 36615426 PMCID: PMC9822179 DOI: 10.3390/molecules28010232] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/03/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022]
Abstract
Ethylene cross-bridged tetraazamacrocycles are known to produce kinetically stable transition metal complexes that can act as robust oxidation catalysts under harsh aqueous conditions. We have synthesized ligand analogs with single acetate pendant arms that act as pentadentate ligands to Mn, Fe, Co, Ni, Cu, and Zn. These complexes have been synthesized and characterized, including the structural characterization of four Co and Cu complexes. Cyclic voltammetry demonstrates that multiple oxidation states are stabilized by these rigid, bicyclic ligands. Yet, redox potentials of the metal complexes are modified compared to the "parent" ligands due to the pendant acetate arm. Similarly, gains in kinetic stability under harsh acidic conditions, compared to parent complexes without the pendant acetate arm, were demonstrated by a half-life seven times longer for the cyclam copper complex. Due to the reversible, high oxidation states available for the Mn and Fe complexes, the Mn and Fe complexes were examined as catalysts for the bleaching of three commonly used pollutant model dyes (methylene blue, methyl orange, and Rhodamine B) in water with hydrogen peroxide as oxidant. The efficient bleaching of these dyes was observed.
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Shircliff AD, Allbritton EMA, Davilla DJ, Gorbet MJ, Jones DG, Tresp DS, Allen MB, Shrestha A, Burgess GE, Eze JI, Fernandez AT, Ramirez D, Shoff KJ, Crispin GG, Crone SB, Flinn M, Tran T, Bryce DS, Bond AL, Shockey DW, Oliver AG, Krause JA, Prior TJ, Hubin TJ. Expanding and quantifying the crystal chemistry of the flexible ligand 15aneN5. CrystEngComm 2022. [DOI: 10.1039/d1ce01534f] [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
15aneN5 is structurally characterized complexed to Cr3+, Mn3+, Fe3+, Co3+, and Cu2+ for the first time. Ru3+ complexation yields a Ru2+ diimine structure. A geometric factor quantifies the coordination geometry of the ligand in its complexes.
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Affiliation(s)
- Anthony D. Shircliff
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Elisabeth M. A. Allbritton
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Dustin J. Davilla
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Michael-Joseph Gorbet
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Donald G. Jones
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - David S. Tresp
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Michael B. Allen
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Alina Shrestha
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Gwendolyn E. Burgess
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - John I. Eze
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Andrea T. Fernandez
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Daniel Ramirez
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Kody J. Shoff
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Garet G. Crispin
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Sarah B. Crone
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Michael Flinn
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Tien Tran
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Darby S. Bryce
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Abbagale L. Bond
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Dylan W. Shockey
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
| | - Allen G. Oliver
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, USA
| | | | - Timothy J. Prior
- Department of Chemistry, University of Hull, Cottingham Road, Kingston Upon Hull, HU6 7RX, UK
| | - Timothy J. Hubin
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK, USA
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Rajakkani P, Alagarraj A, Gurusamy Thangavelu SA. Tetraaza macrocyclic Schiff base metal complexes bearing pendant groups: Synthesis, characterization and bioactivity studies. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108989] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Baghdadi NE, Burke BP, Alresheedi T, Nigam S, Saeed A, Almutairi F, Domarkas J, Khan A, Archibald SJ. Multivalency in CXCR4 chemokine receptor targeted iron oxide nanoparticles. Dalton Trans 2021; 50:1599-1603. [PMID: 33502425 DOI: 10.1039/d0dt02626c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The CXCR4 chemokine receptor is an important biomolecular target in cancer diagnostics and therapeutics. In a new multivalent approach, iron oxide nanoparticles were conjugated with multiple binding units of a low affinity azamacrocylic CXCR4 antagonist. The silica coated nanostructure has good suspension stability, a mode size of 72 nm and high affinity for CXCR4, showing >98% inhibition of anti-CXCR4 mAb binding in a receptor binding competition assay on Jurkat cells.
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Affiliation(s)
- Neazar E Baghdadi
- Centre of Nanotechnology, King Abdul-Aziz University, Jeddah, Saudi Arabia and Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK.
| | - Benjamin P Burke
- Department of Biomedical Sciences and PET Research Centre, University of Hull Cottingham Road, Hull, HU6 7RX, UK
| | - Tahani Alresheedi
- Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK. and Department of Biomedical Sciences and PET Research Centre, University of Hull Cottingham Road, Hull, HU6 7RX, UK and Department of Chemistry, College of Science and Art, Qassim University, Qassim, Saudi Arabia
| | - Shubhanchi Nigam
- Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK. and Department of Biomedical Sciences and PET Research Centre, University of Hull Cottingham Road, Hull, HU6 7RX, UK
| | - Abdu Saeed
- Department of Physics, Faculty of Science, King Abdul-Aziz University, Jeddah 21589, Saudi Arabia
| | - Farooq Almutairi
- Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK. and College of Applied Medical Sciences, University of Hafar Al-Batin, Hafar Al-Batin, Saudi Arabia
| | - Juozas Domarkas
- Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK. and Department of Biomedical Sciences and PET Research Centre, University of Hull Cottingham Road, Hull, HU6 7RX, UK
| | - Abid Khan
- Department of Biomedical Sciences and PET Research Centre, University of Hull Cottingham Road, Hull, HU6 7RX, UK and Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Stephen J Archibald
- Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK. and Department of Biomedical Sciences and PET Research Centre, University of Hull Cottingham Road, Hull, HU6 7RX, UK
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Vashistha VK, Kumar A. Synthesis of Co(II) and Ni(II) Asymmetric Tetraazamacrocyclic Complexes and Their Electrochemical and Antimicrobial Studies. RUSS J INORG CHEM+ 2021. [PMCID: PMC7847242 DOI: 10.1134/s0036023620140077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- V. K. Vashistha
- Department of Chemistry, GLA University, 281406 Mathura, India
| | - A. Kumar
- Department of Chemistry, GLA University, 281406 Mathura, India
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Shircliff AD, Burke BP, Davilla DJ, Burgess GE, Okorocha FA, Shrestha A, Allbritton EMA, Nguyen PT, Lamar RL, Jones DG, Gorbet MJ, Allen MB, Eze JI, Fernandez AT, Ramirez D, Archibald SJ, Prior TJ, Krause JA, Oliver AG, Hubin TJ. An ethylene cross-bridged pentaazamacrocycle and its Cu 2+ complex: constrained ligand topology and excellent kinetic stability. Chem Commun (Camb) 2020; 56:7519-7522. [PMID: 32510060 DOI: 10.1039/d0cc00919a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Rigid and topologically constrained ethylene cross-bridged tetraazamacrocycles have been increasingly utilised for thirty years as they form remarkably stable transition metal complexes for catalysis, biomedical imaging, and inorganic drug molecule applications. Extending these benefits to pentaazamacrocycles has been achieved and a first transition metal complex prepared and structurally characterized.
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Affiliation(s)
- Anthony D Shircliff
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK 73096, USA.
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12
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Renard I, Archibald SJ. CXCR4-targeted metal complexes for molecular imaging. Med Chem 2020. [DOI: 10.1016/bs.adioch.2019.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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