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Camacho-Montes H, Aizpuru APL, Dominguez-Garcia R, Guzman-Pando A, Camarillo-Cisneros J. Copper complex molecules as dye-sensitizers: Hybrid MetaGGA and standard + van der Waals functionals. J Mol Graph Model 2024; 128:108724. [PMID: 38340691 DOI: 10.1016/j.jmgm.2024.108724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 01/27/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024]
Abstract
This study focuses on the use of Density Functional Theory calculations with two main approaches: computational chemistry and computational physics. The following three cases were considered for the derivation: (I) computational chemistry using the M06 hybrid functional, (II) computational chemistry using the standard PBE functional including vdW interactions, and (III) computational physics using the standard PBE functional including vdW interactions and periodic boundary conditions. Since the approximation using hybrid functionals M06 has been extensively validated, this method was used as a reference. The second and third methods are less expensive, it is ideal for use to extend large systems. From the sensitized molecules are found in the gas phase and include solvent effects through the integral equation formalism polarizable continuum model. In a systematic analysis of 15 Cu complex molecules, a complete characterization for DSSCs has been carried out and molecular geometry, electronic and optical measurements have been reported.
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Affiliation(s)
- H Camacho-Montes
- Instituto de Ingenieria y Tecnologia, Universidad Autonoma de Ciudad Juarez, Ciudad Juarez, Mexico
| | - A P Leyva Aizpuru
- Computational Chemistry Physics Laboratory, Universidad Autonoma de Chihuahua, Campus II, Chihuahua, Mexico
| | - R Dominguez-Garcia
- Centro de Investigacion en Materiales Avanzados, Av. Miguel de Cervantes Saavedra 120, Chihuahua, Mexico
| | - A Guzman-Pando
- Computational Chemistry Physics Laboratory, Universidad Autonoma de Chihuahua, Campus II, Chihuahua, Mexico
| | - J Camarillo-Cisneros
- Computational Chemistry Physics Laboratory, Universidad Autonoma de Chihuahua, Campus II, Chihuahua, Mexico.
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2
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Xia N, Liu G, Chen Y, Wu T, Liu L, Yang S, Li Y. Magnetically-assisted electrochemical immunoplatform for simultaneous detection of active and total prostate-specific antigen based on proteolytic reaction and sandwich affinity analysis. Talanta 2024; 270:125534. [PMID: 38091743 DOI: 10.1016/j.talanta.2023.125534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 01/27/2024]
Abstract
Simultaneous detection of active and inactive proteases is clinically meaningful for improving diagnostic specificity. In this work, we reported an electrochemical method for simultaneous immunoassays of active and total proteases. Magnetic beads (MBs) were used as the solid supports for immobilization of capture antibodies and enrichment of targets. For the detection of active protease, the proteolytic-reaction-based analysis was carried out by the generation of Cu2+-binding peptide, in which a label-free peptide was used as the proteolytic substrate. The redox potential of the resulting peptide-Cu2+ complex was intrinsically distinguished from that of free Cu2+, thus allowing the "signal-on" detection of active protease. For the immunoassay of total protease in a sandwich-like format, electroactive metal-organic frameworks (Cu-MOFs) were used as the signal tags. The captured Cu-MOFs could directly produce a well-defined electrochemical signal from the reduction of Cu2+ ions. The analytical performances of the immunoplatform were evaluated by determining the model analytes of free and total prostate-specific antigen (fPSA and tPSA) in buffer and serum. The detection limits were found to be 0.3 pM for fPSA and 2 pM for tPSA. This work proposed a new strategy for simultaneous detection of active and total proteases, which should be evaluable for clinical diagnosis and treatment of protease-relative diseases.
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Affiliation(s)
- Ning Xia
- Henan Province of Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan, 455000, People's Republic of China.
| | - Gang Liu
- Henan Province of Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan, 455000, People's Republic of China; College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan, 450001, People's Republic of China
| | - Yonghong Chen
- Henan Province of Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan, 455000, People's Republic of China
| | - Tong Wu
- College of Chemistry and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan, 455000, People's Republic of China
| | - Lin Liu
- Henan Province of Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan, 455000, People's Republic of China
| | - Suling Yang
- Henan Province of Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan, 455000, People's Republic of China
| | - Yuanyuan Li
- College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan, 450001, People's Republic of China.
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Zhang HQ, Lu X, Liang H, Chen ZF. Copper(II) complexes with plumbagin and bipyridines target mitochondria for enhanced chemodynamic cancer therapy. J Inorg Biochem 2024; 251:112432. [PMID: 38016329 DOI: 10.1016/j.jinorgbio.2023.112432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 10/31/2023] [Accepted: 11/16/2023] [Indexed: 11/30/2023]
Abstract
The combination of mitochondrial targeting and chemodynamic therapy is a promising anti-cancer strategy. Three mitochondria targeting copper(II) complexes (Cu1-Cu3) with plumbagin and bipyridine ligands for enhanced chemodynamic therapy were synthesized and characterized. Their anti-proliferative activity to HeLa cells was higher than that of cisplatin, and their toxicity to normal cells was low. Cellular uptake and distribution studies indicated that Cu1 and Cu3 were mainly accumulated in mitochondria. The mechanism studies showed that Cu1 and Cu3 converted intracellular H2O2 into toxic hydroxyl radicals by consuming glutathione, leading to mitochondrial dysfunction. Treatment with the copper complex caused ER stress and cell arrest in the S phase which resulted in apoptosis. In vivo, Cu1 and Cu3 effectively inhibited the growth of HeLa xenograft tumors without obvious toxic and side effects.
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Affiliation(s)
- Hai-Qun Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Xing Lu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Zhen-Feng Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
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Wang X, Zhu M, Li S, Xu G, Zhang Z, Yang F. Novel mono-, bi-, tri- and tetra-nuclear copper complexes that inhibit tumor growth through apoptosis and anti-angiogenesis. J Inorg Biochem 2024; 250:112403. [PMID: 37866112 DOI: 10.1016/j.jinorgbio.2023.112403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 10/08/2023] [Accepted: 10/16/2023] [Indexed: 10/24/2023]
Abstract
To develop the next-generation metal agents for efficiently inhibiting tumor growth, a series of novel mononuclear, binuclear and trinuclear copper (Cu) thiophene-2-formaldehyde thiosemicarbazone complexes and a tetranuclear Cu 1,2,4-triazole-derived complex have been synthesized and their structure-activity relationships have been studied. The trinucleated Cu complex showed the strongest inhibitory activity against T24 cells among all the Cu complexes. Its antitumor effect in vivo was superior to that of cisplatin, with reduced side effects. Further studies on the antitumor mechanism have showed that Cu complexes not only induced apoptosis of cancer cells but also inhibited tumor angiogenesis by inhibiting the migration and invasion of vascular endothelial cells, blocking the cell cycle in the G1 phase, and inducing autophagy.
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Affiliation(s)
- Xiaojun Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, PR China
| | - Minghui Zhu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, PR China
| | - Shanhe Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, PR China
| | - Gang Xu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, PR China
| | - Zhenlei Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, PR China.
| | - Feng Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, PR China.
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Loffelmann M, Škrott Z, Majera D, Štarha P, Kryštof V, Mistrík M. Identification of novel dithiocarbamate- copper complexes targeting p97/NPL4 pathway in cancer cells. Eur J Med Chem 2023; 261:115790. [PMID: 37690264 DOI: 10.1016/j.ejmech.2023.115790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/26/2023] [Accepted: 09/01/2023] [Indexed: 09/12/2023]
Abstract
Dithiocarbamates (DTCs) are simple organic compounds with many applications in industry and medicine. They are potent metal chelators forming complexes with various metal ions, including copper. Recently, bis(diethyldithiocarbamate)-copper complex (CuET) has been identified as a metabolic product of the anti-alcoholic drug Antabuse (disulfiram, DSF), standing behind DSF's reported anticancer activity. Mechanistically, CuET in cells causes aggregation of NPL4 protein, an essential cofactor of the p97 segregase, an integral part of the ubiquitin-proteasome system. The malfunction of p97/NPL4 caused by CuET leads to proteotoxic stress accompanied by heat shock and unfolded protein responses and cancer cell death. However, it is not known whether the NPL4 inhibition is unique for CuET or whether it is shared with other dithiocarbamate-copper complexes. Thus, we tested 20 DTCs-copper complexes in this work for their ability to target and aggregate NPL4 protein. Surprisingly, we have found that certain potency against NPL4 is relatively common for structurally different DTCs-copper complexes, as thirteen compounds scored in the cellular NPL4 aggregation assay. These compounds also shared typical cellular phenotypes reported previously for CuET, including the NPL4/p97 proteins immobilization, accumulation of polyubiquitinated proteins, the unfolded protein, and the heat shock responses. Moreover, the active complexes were also toxic to cancer cells (the most potent in the nanomolar range), and we have found a strong positive correlation between NPL4 aggregation and cytotoxicity, confirming NPL4 as a relevant target. These results show the widespread potency of DTCs-copper complexes to target NPL4 with subsequent induction of lethal proteotoxic stress in cancer cells with implications for drug development.
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Affiliation(s)
- Martin Loffelmann
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, Olomouc, 779 00, Czech Republic
| | - Zdeněk Škrott
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, Olomouc, 779 00, Czech Republic
| | - Dušana Majera
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, Olomouc, 779 00, Czech Republic
| | - Pavel Štarha
- Department of Inorganic Chemistry, Faculty of Science, Palacky University Olomouc, 17. listopadu 1192/12, Olomouc, 779 00, Czech Republic
| | - Vladimír Kryštof
- Department of Experimental Biology, Faculty of Science, Palacky University Olomouc, Slechtitelu 27, Olomouc, 783 71, Czech Republic.
| | - Martin Mistrík
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, Olomouc, 779 00, Czech Republic.
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Dellal F, Santo Domingo Porqueras D, Narayanin-Richenapin S, Thimotee M, Delahaye V, Diouf Y, Piasta K, Gumienna-Kontecka E, Kozlowski H, Beyler M, Tripier R, Moyeux A, Gager O, Besnard V, Salerno M. Multistep synthesis of a novel copper complex with potential for Alzheimer's disease diagnosis. J Biol Inorg Chem 2023; 28:777-790. [PMID: 37978078 DOI: 10.1007/s00775-023-02028-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/12/2023] [Indexed: 11/19/2023]
Abstract
Positron emission tomography (PET) imaging of Aβ plaques, is recognized as a tool for the diagnosis of Alzheimer's disease. As a contribution to the development of new strategies for early diagnosis of the disease, using PET medical imaging technique, a new copper complex, the [Cu(TE1PA-ONO)]+ was synthesized in ten steps. The key step of our strategy is the coupling of a monopicolinate-N-alkylated cyclam-based ligand with a moiety capable of recognizing Aβ plaques via a successful and challenging Buchwald-Hartwig coupling reaction. To our knowledge, it is the first time that such a strategy is used to functionalize polyazamacrocyclic derivatives. The thermodynamic stability constants determined in MeOH/H2O solvent indicate that the attachment of this moiety does not weaken the chelating properties of TE1PA-ONO ligand in relation to parent HTE1PA. The novel complex described here is able to recognize amyloid plaques in brain sections from Alzheimer's disease patients and shows low toxicity to human neuronal cells.
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Affiliation(s)
- Fatma Dellal
- Université Sorbonne Paris Nord, UMR-CNRS 7244, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), équipe NBD, 1 rue de Chablis, 93000, Bobigny, France
| | - Diego Santo Domingo Porqueras
- Université Sorbonne Paris Nord, UMR-CNRS 7244, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), équipe NBD, 1 rue de Chablis, 93000, Bobigny, France
| | - Stacy Narayanin-Richenapin
- Université Sorbonne Paris Nord, UMR-CNRS 7244, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), équipe NBD, 1 rue de Chablis, 93000, Bobigny, France
| | - Marine Thimotee
- Université Sorbonne Paris Nord, UMR-CNRS 7244, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), équipe NBD, 1 rue de Chablis, 93000, Bobigny, France
| | - Vanessa Delahaye
- Université Sorbonne Paris Nord, UMR-CNRS 7244, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), équipe NBD, 1 rue de Chablis, 93000, Bobigny, France
| | - Yacine Diouf
- Université Sorbonne Paris Nord, UMR-CNRS 7244, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), équipe NBD, 1 rue de Chablis, 93000, Bobigny, France
| | - Karolina Piasta
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383, Wroclaw, Poland
| | | | - Henryk Kozlowski
- Department of Health Sciences, University of Opole, Katowicka 68, 45-060, Opole, Poland
| | - Maryline Beyler
- Univ Brest, UMR-CNRS 6521 CEMCA, UFR des Sciences et Techniques, 6 avenue Victor le Gorgeu, C.S. 93837, 29238, Brest, France
| | - Raphael Tripier
- Univ Brest, UMR-CNRS 6521 CEMCA, UFR des Sciences et Techniques, 6 avenue Victor le Gorgeu, C.S. 93837, 29238, Brest, France
| | - Alban Moyeux
- Université Sorbonne Paris Nord, UMR-CNRS 7244, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), équipe NBD, 1 rue de Chablis, 93000, Bobigny, France
| | - Olivier Gager
- Université Sorbonne Paris Nord, UMR-CNRS 7244, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), équipe NBD, 1 rue de Chablis, 93000, Bobigny, France
| | - Valérie Besnard
- Université Sorbonne Paris Nord, UMR1272, Laboratoire Hypoxie et Poumon, Plateforme TisCel 13, 1 rue de Chablis, 93000, Bobigny, France
| | - Milena Salerno
- Université Sorbonne Paris Nord, UMR-CNRS 7244, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), équipe NBD, 1 rue de Chablis, 93000, Bobigny, France.
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Płonka D, Wiśniewska MD, Ziemska-Legięcka J, Grynberg M, Bal W. The Cu(II) affinity constant and reactivity of Hepcidin-25, the main iron regulator in human blood. J Inorg Biochem 2023; 248:112364. [PMID: 37689037 DOI: 10.1016/j.jinorgbio.2023.112364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/21/2023] [Accepted: 09/01/2023] [Indexed: 09/11/2023]
Abstract
Hepcidin is an iron regulatory hormone that does not bind iron directly. Instead, its mature 25-peptide form (H25) contains a binding site for other metals, the so-called ATCUN/NTS (amino-terminal Cu/Ni binding site). The Cu(II)-hepcidin complex was previously studied, but due to poor solubility and difficult handling of the peptide the definitive account on the binding equilibrium was not obtained reliably. In this study we performed a series of fluorescence competition experiments between H25 and its model peptides containing the same ATCUN/NTS site and determined the Cu(II) conditional binding constant of the CuH25 complex at pH 7.4, CK7.4 = 4 ± 2 × 1014 M-1. This complex was found to be very inert in exchange reactions and poorly reactive in the ascorbate consumption test. The consequences of these findings for the putative role of Cu(II) interactions with H25 are discussed.
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Affiliation(s)
- Dawid Płonka
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland
| | - Marta D Wiśniewska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland
| | - Joanna Ziemska-Legięcka
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland
| | - Marcin Grynberg
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland.
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Chen YM, Liu YC, Wang JQ, Ou GC, Wang XF, Gao SQ, Du KJ, Lin YW. Functional copper complexes with benzofurans tridentate ligand: Synthesis, crystal structure, DNA binding and anticancer studies. J Inorg Biochem 2023; 247:112330. [PMID: 37478782 DOI: 10.1016/j.jinorgbio.2023.112330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/04/2023] [Accepted: 07/12/2023] [Indexed: 07/23/2023]
Abstract
Metal complexes, particularly copper(II) complexes, are often used as anticancer drugs due to their ability to generate reactive oxygen species (ROS) in cells. Four copper(II) complexes have been designed based on ligands for triplet pyridine derivatives (complexes 1-4), and their structures have been determined using X-ray single crystal analysis. The interactions of these complexes with calf thymus DNA (CT-DNA) have been investigated using various techniques, including UV-vis absorption, viscosity measurements, and circular dichroism spectroscopy. The results indicate that complexes 1-4 strongly interact with DNA through partial intercalations. Further investigation using agarose gel electrophoresis shows that all four complexes can cleave pBR322 DNA in the presence of ascorbic acid as a reducing agent, and the DNA cleavage mechanism is through the generation of singlet oxygen (1O2). In vitro anticancer activities of these complexes have been evaluated using A549, MDA-MB-231, HeLa, and HepG2 cells. The calculated IC50 values indicate significant efficacy against cancer cells. Additionally, AO/EB staining assays reveal that these complexes induce cell apoptosis in HeLa cell line.
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Affiliation(s)
- Yu-Mei Chen
- School of Chemistry and Chemical Engineering, Laboratory of Protein Structure and Function, Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Yu-Can Liu
- School of Chemistry and Chemical Engineering, Laboratory of Protein Structure and Function, Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Jin-Quan Wang
- School of Biosciences & Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510000, China
| | - Guang-Chuan Ou
- Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou 425199, China
| | - Xiao-Feng Wang
- School of Chemistry and Chemical Engineering, Laboratory of Protein Structure and Function, Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Shu-Qin Gao
- School of Chemistry and Chemical Engineering, Laboratory of Protein Structure and Function, Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Ke-Jie Du
- School of Chemistry and Chemical Engineering, Laboratory of Protein Structure and Function, Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China.
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, Laboratory of Protein Structure and Function, Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China.
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Dilshad S, Shabnam, Ali A, Firdaus S, Ahmad M, Ahmad A. Suppression of human lysozyme aggregation by a novel copper-based complex of 3,4-dimethoxycinnamic acid. J Biomol Struct Dyn 2023:1-13. [PMID: 37578054 DOI: 10.1080/07391102.2023.2246567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 08/02/2023] [Indexed: 08/15/2023]
Abstract
In this work, a new Cu(II)-based complex as a chemotherapeutic drug agent, formulated as[Cu(DCA)4(H2O)2]⋅4H2O⋅4MeOH, (DCA = 3,4-dimethoxycinnamic acid), namely 1 was successfully synthesized utilizing DCA as a ligand to arrest fibrillation in Human lysozyme. The 1 was thoroughly characterized by single crystal X-ray diffraction (SC-XRD), spectroscopic (UV-Vis and FTIR) techniques, PXRD, and TGA analysis. Its crystal structure reveals a paddle wheel network around central copper metal ions. The Cu(II) metal ions exhibit a distorted square pyramidal configuration. The fluorescence titration studies showed moderate binding interaction of 1 with HuL with Ka of 6.3x105 M-1 at pH-2, 25 °C due to its interaction withAsp53, Tyr63, Val110, and Ala111 as shown by docking and simulation studies. 1suppresses the HuL fibrillation in a concentration-dependent manner, as demonstrated by ThT assay. At 200 µM concentration, it leads to the formation of smaller species of the protein in comparison to the control sample, as suggested by Light Scattering studies. The species formed are less hydrophobic and retain their native α-helix structure compared to the control samples, which are hydrophobic and form β-sheet rich amyloids as shown by ANS hydrophobicity assay and CD spectroscopy, respectively. Furthermore, morphological analysis of the species by AFM has demonstrated that, unlike mature amyloid fibrils in the control sample, HuL forms small-size aggregates in the presence of 1 under similar fibrillation conditions. It can be concluded that 1 effectively suppresses HuL fibrillation due to moderate binding to the protein.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sumra Dilshad
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Shabnam
- Biophysical Chemistry Lab, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Arif Ali
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Shama Firdaus
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Musheer Ahmad
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Aiman Ahmad
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
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Masuri S, Moráň L, Vesselá T, Cadoni E, Cabiddu MG, Pečinka L, Gabrielová V, Meloni F, Havel J, Vaňhara P, Pivetta T. A novel heteroleptic Cu(II)-phenanthroline-UDCA complex as lipoxygenase inhibitor and ER-stress inducer in cancer cell lines. J Inorg Biochem 2023; 246:112301. [PMID: 37392615 DOI: 10.1016/j.jinorgbio.2023.112301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/08/2023] [Accepted: 06/20/2023] [Indexed: 07/03/2023]
Abstract
A new heteroleptic copper(II) compound named C0-UDCA was prepared by reaction of [Cu(phen)2(OH2)](ClO4)2 (C0) with the bile ursodeoxycholic acid (UDCA). The resulting compound is able to inhibit the lipoxygenase enzyme showing more efficacy than the precursors C0 and UDCA. Molecular docking simulations clarified the interactions with the enzyme as due to allosteric modulation. The new complex shows antitumoral effect on ovarian (SKOV-3) and pancreatic (PANC-1) cancer cells at the Endoplasmic Reticulum (ER) level by activating the Unfolded Protein Response. In particular, the chaperone BiP, the pro-apoptotic protein CHOP and the transcription factor ATF6 are upregulated in the presence of C0-UDCA. The combination of Intact Cell MALDI-MS and statistical analysis have allowed us to discriminate between untreated and treated cells based on their mass spectrometry fingerprints.
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Affiliation(s)
- Sebastiano Masuri
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042, Monserrato, Cagliari, Italy
| | - Lukáš Moráň
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, 62500 Brno, Czech Republic; Research Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, 65653 Brno, Czech Republic
| | - Tereza Vesselá
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, 62500 Brno, Czech Republic
| | - Enzo Cadoni
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042, Monserrato, Cagliari, Italy
| | - Maria Grazia Cabiddu
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042, Monserrato, Cagliari, Italy
| | - Lukáš Pečinka
- Department of Chemistry, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
| | - Viktorie Gabrielová
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, 62500 Brno, Czech Republic
| | - Francesca Meloni
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042, Monserrato, Cagliari, Italy
| | - Josef Havel
- Department of Chemistry, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic; International Clinical Research Center, St. Anne's University Hospital, 65691 Brno, Czech Republic
| | - Petr Vaňhara
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, 62500 Brno, Czech Republic; Department of Chemistry, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
| | - Tiziana Pivetta
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042, Monserrato, Cagliari, Italy.
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11
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Wang W, Li P, Huang Q, Zhu Q, He S, Bing W, Zhang Z. Functionalized antibacterial peptide with DNA cleavage activity for enhanced bacterial disinfection. Colloids Surf B Biointerfaces 2023; 228:113412. [PMID: 37343506 DOI: 10.1016/j.colsurfb.2023.113412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/20/2023] [Accepted: 06/14/2023] [Indexed: 06/23/2023]
Abstract
Antibiotics are commonly used to treat bacterial infections, but the misuse and abuse of antibiotics have given rise to a severe problem of the drug resistance of bacteria. Solving this problem has been a vitally important task in the modern medical arena. Antibacterial peptide (AMPs) has become a promising candidate drug to replace antibiotics because of their broad-spectrum antibacterial activity and their difficulty in making bacteria resistant. However, its wider clinical application is limited by the shortcomings of high cytotoxicity and low antibacterial efficiency. In this paper, we constructed an antibacterial peptide (Cu-GGH-KKLRKIAFK, abbreviated as Cu-GGH-AMP) with a DNA cleavage function. The peptide has two functional regions, the C-terminal antibacterial peptide PaDBS1R6F10 (KKLRLKIAFK) and the N-terminal Cu-GGH complex. PaDBS1R6F10 is a unique antibacterial peptide, which shows lower tendency to produce bacterial resistance than traditional antibiotics. Cu-GGG complexes are formed by chelating Cu with the classical amino terminal Cu (II)- and Ni (II) -Binding (ATCUN) motif GGH. In the presence of ascorbic acid, Cu-GGH can efficiently catalyze the oxidative cleavage of bacterial DNA, thus playing a synergistic antibacterial role with antibacterial peptides. The in vitro and in vivo experiments demonstrated this functionalized antibacterial peptide possesses excellent antibacterial and anti-skin infection capability, as well as the activity of promoting wound healing.
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Affiliation(s)
- Wei Wang
- School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, China
| | - Peizhe Li
- Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 130018, China
| | - Qiwen Huang
- Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 130018, China
| | - Qiming Zhu
- Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 130018, China
| | - Shuijian He
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Wei Bing
- School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, China; Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China.
| | - Zhijun Zhang
- Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 130018, China; Shaoxing Keqiao Research Institute of Zhejiang Sci-Tech University, Shaoxing 312000, China.
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12
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Sk S, Majumder A, Sow P, Samadder A, Bera M. Exploring a new family of designer copper(II) complexes of anthracene-appended polyfunctional organic assembly displaying potential anticancer activity via cytochrome c mediated mitochondrial apoptotic pathway. J Inorg Biochem 2023; 243:112182. [PMID: 36933342 DOI: 10.1016/j.jinorgbio.2023.112182] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/27/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023]
Abstract
The present article describes the systematic study on design and synthesis, physicochemical properties and spectroscopic features, and potential anticancer activities of a family of novel copper(II)-based designer metal complexes [Cu2(acdp)(μ-Cl)(H2O)2] (1), [Cu2(acdp)(μ-NO3)(H2O)2] (2) and [Cu2(acdp)(μ-O2CCF3)(H2O)2] (3) of anthracene-appended polyfunctional organic assembly, H3acdp (H3acdp = N,N'-bis[anthracene-2-ylmethyl]-N,N'-bis[carboxymethyl]-1,3-diaminopropan-2-ol). Synthesis of 1-3 was accomplished under facile experimental conditions, preserving their overall integrity in solution. The incorporation of polycyclic anthracene skeleton within the backbone of organic assembly increases lipophilicity of resulting complexes, thereby dictating the degree of cellular uptake with improved biological activity. Complexes 1-3 were characterized by elemental analysis, molar conductance, FTIR, UV-Vis absorption/fluorescence emission titration spectroscopy, PXRD and TGA/DTA studies, including DFT calculations. The cellular cytotoxicity of 1-3 when studied in HepG2 cancer cell line showed substantial cytotoxic effects, whereas no such cytotoxicity was observed when exposed to normal L6 skeletal muscle cell line. Thereafter, the signaling factors involved in the process of cytotoxicity in HepG2 cancer cells were investigated. Alteration of cytochrome c and Bcl-2 protein expression levels along with modulation of mitochondrial membrane potential (MMP) in the presence of 1-3, strongly suggested the possibility of activating mitochondria-mediated apoptotic pathway involved in halting the cancer cell propagation. However, when a comparative assessment on their bio-efficacies was made, 1 showed higher cytotoxicity, nuclear condensation, DNA binding and damage, ROS generation and lower rate of cell proliferation compared to 2 and 3 in HepG2 cell line, indicating that the anticancer activity of 1 is significantly higher than that of 2 and 3.
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Affiliation(s)
- Sujan Sk
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Avishek Majumder
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Priyanka Sow
- Department of Zoology, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Asmita Samadder
- Department of Zoology, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India.
| | - Manindranath Bera
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India.
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13
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Zheng Y, Wei K, Gao Y, Zhou Z, Zheng X, Li J, Qi J. Comparative evaluation of the structure and antitumor mechanism of mononuclear and trinucleated thiosemicarbazone Cu(II) complexes. J Inorg Biochem 2023; 240:112116. [PMID: 36592511 DOI: 10.1016/j.jinorgbio.2022.112116] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 12/30/2022]
Abstract
The ratio of ligand to Cu(II) ions has an essential effect on the geometrical configuration and anti-tumour activity of metal-based complexes. In this work, we synthesised two Cu(II) thiosemicarbazone complexes, namely, [Cu(L)(Cl)] (C1) and [Cu3(L)2(Cl)4] (C2), by controlling the ratio of Cu(II) ion to ligand, to evaluate their anti-tumour activity. The ability of C1 to catalyze hydrogen peroxide to produce reactive oxygen species (ROS) was significantly higher than that of Cu(II) ion. Moreover, the bridge of Cu(II) and two molecules generated a new complex (C2), which, in contrast to C1, enhanced the generation of Fenton-like-triggered ROS. Consequently, the produced ROS depleted reduced glutathione, caused oxidative cell stress and promoted apoptosis through mitochondrial apoptotic pathways. In addition, C2 exhibited better tumour suppression than C1 in a nude mouse tumour xenograft model.
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Affiliation(s)
- Yunyun Zheng
- Medicine College of Pingdingshan University, Pingdingshan, Henan 467000, China
| | - Kai Wei
- Medicine College of Pingdingshan University, Pingdingshan, Henan 467000, China
| | - Yingying Gao
- Medicine College of Pingdingshan University, Pingdingshan, Henan 467000, China
| | - Ziyan Zhou
- Medicine College of Pingdingshan University, Pingdingshan, Henan 467000, China
| | - Xinhua Zheng
- Medicine College of Pingdingshan University, Pingdingshan, Henan 467000, China
| | - Jiuling Li
- Medicine College of Pingdingshan University, Pingdingshan, Henan 467000, China.
| | - Jinxu Qi
- Medicine College of Pingdingshan University, Pingdingshan, Henan 467000, China.
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14
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Lai JW, Maah MJ, Tan KW, Sarip R, Lim YAL, Ganguly R, Khaw LT, Ng CH. Dinuclear and mononuclear metal(II) polypyridyl complexes against drug-sensitive and drug-resistant Plasmodium falciparum and their mode of action. Malar J 2022; 21:386. [PMID: 36528584 PMCID: PMC9758846 DOI: 10.1186/s12936-022-04406-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Malaria remains one of the most virulent and deadliest parasitic disease in the world, particularly in Africa and Southeast Asia. Widespread occurrence of artemisinin-resistant Plasmodium falciparum strains from the Greater Mekong Subregion is alarming. This hinders the national economies, as well as being a major drawback in the effective control and elimination of malaria worldwide. Clearly, an effective anti-malarial drug is urgently needed. METHODS The dinuclear and mononuclear copper(II) and zinc(II) complexes were synthesized in ethanolic solution and characterized by various physical measurements (FTIR, CHN elemental analysis, solubility, ESI-MS, UV-Visible, conductivity and magnetic moment, and NMR). X-ray crystal structure of the dicopper(II) complex was determined. The in vitro haemolytic activities of these metal complexes were evaluated spectroscopically on B+ blood while the anti-malarial potency was performed in vitro on blood stage drug-sensitive Plasmodium falciparum 3D7 (Pf3D7) and artemisinin-resistant Plasmodium falciparum IPC5202 (Pf5202) with fluorescence dye. Mode of action of metal complexes were conducted to determine the formation of reactive oxygen species using PNDA and DCFH-DA dyes, JC-1 depolarization of mitochondrial membrane potential, malarial 20S proteasome inhibition with parasite lysate, and morphological studies using Giemsa and Hoechst stains. RESULTS Copper(II) complexes showed anti-malarial potency against both Pf3D7 and Pf5202 in sub-micromolar to micromolar range. The zinc(II) complexes were effective against Pf3D7 with excellent therapeutic index but encountered total resistance against Pf5202. Among the four, the dinuclear copper(II) complex was the most potent against both strains. The zinc(II) complexes caused no haemolysis of RBC while copper(II) complexes induced increased haemolysis with increasing concentration. Further mechanistic studies of both copper(II) complexes on both Pf3D7 and Pf5202 strains showed induction of ROS, 20S malarial proteasome inhibition, loss of mitochondrial membrane potential and morphological features indicative of apoptosis. CONCLUSION The dinuclear [Cu(phen)-4,4'-bipy-Cu(phen)](NO3)4 is highly potent and can overcome the total drug-resistance of Pf5202 towards chloroquine and artemisinin. The other three copper(II) and zinc(II) complexes were only effective towards the drug-sensitive Pf3D7, with the latter causing no haemolysis of RBC. Their mode of action involves multiple targets.
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Affiliation(s)
- Jing Wei Lai
- grid.10347.310000 0001 2308 5949Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Mohd Jamil Maah
- grid.10347.310000 0001 2308 5949Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Kong Wai Tan
- grid.10347.310000 0001 2308 5949Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Rozie Sarip
- grid.10347.310000 0001 2308 5949Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Yvonne Ai Lian Lim
- grid.10347.310000 0001 2308 5949Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Rakesh Ganguly
- grid.410868.30000 0004 1781 342XShiv Nadar University, Greater Noida, India
| | - Loke Tim Khaw
- grid.411729.80000 0000 8946 5787Department of Microbiology and Immunology, School of Medicine, International Medical University, 57000 Kuala Lumpur, Malaysia
| | - Chew Hee Ng
- grid.411729.80000 0000 8946 5787Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, 57000 Kuala Lumpur, Malaysia
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15
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Zhang S, Zhao J, Guo Y, Hu J, Chen X, Ruan H, Cao T, Hou H. Thiosemicarbazone N-Heterocyclic Cu(II) complexes inducing nuclei DNA and mitochondria damage in hepatocellular carcinoma cells. J Inorg Biochem 2022; 236:111964. [PMID: 36027842 DOI: 10.1016/j.jinorgbio.2022.111964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/02/2022] [Accepted: 08/09/2022] [Indexed: 12/15/2022]
Abstract
The α-N-Heterocyclic thiosemicarbazones and their metal complexes have been widely investigated as anticancer and antibacterial agents for their broad spectrum of pharmacological properties. Thus, two thiosemicarbazone-based Cu(II) complexes, [Cu2(ptpc)I2] (1) and [Cu(qtpc)I] (2) with thiosemicarbazone ligand (ptpc = 2-(di(pyridin-2-yl)methylene)-N-(2-(trifluoromethyl)phenyl)-hydrazine-1-carbothioamide, qtpc = 2-(quinolin-8-ylmethylene)-N-(2-(trifluoromethyl)phenyl)hydrazine-1-carbothioamide) were synthesized and evaluated for their biological activities. Complexes 1 and 2 are superior to cisplatin in vitro antiproliferative activities toward hepatocellular carcinoma cell line with the half maximal inhibitory concentration value of 0.2 and 2 μM, respectively. A series of spectroscopic assays and the DNA cleavage experiments showed that both complexes can change and distort the conformation of DNA. Molecular docking experiment further demonstrated that complex 1 binds to DNA mainly in groove mode. Meanwhile, benefiting from their good liposolubility, complexes 1 and 2 could easily enter cells, which further triggers cell cycle arrest and apoptosis. Moreover, complexes 1 and 2 caused serious mitochondrial damage, associating with increased the level of reactive oxygen species (ROS) and Ca2+, decreased adenosine triphosphate (ATP) content and mitochondrial membrane potential (Δψm), and transformed mitochondrial morphology. These findings indicated that complexes 1 and 2 might exert their anticancer activity by inducing DNA and mitochondrial damage simultaneously.
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Affiliation(s)
- Siye Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, PR China
| | - Jin'an Zhao
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, PR China; College of chemical engineering and dyeing engineering, Henan University of Engineering, Zhengzhou, 451191, Henan, PR China.
| | - Yan Guo
- College of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, PR China.
| | - Jiyong Hu
- College of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, PR China.
| | - Xiaojing Chen
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, PR China
| | - Hehui Ruan
- College of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, PR China
| | - Tingting Cao
- College of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, PR China
| | - Hongwei Hou
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, PR China
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16
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Huang Z, Ding Y, Luo Y, Chen M, Zeng Z, Zhang T, Sun Y, Huang Y, Zhao C. ROS-triggered cycle amplification effect: A prodrug activation nanoamplifier for tumor-specific therapy. Acta Biomater 2022; 152:367-379. [PMID: 36084924 DOI: 10.1016/j.actbio.2022.08.072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/24/2022] [Accepted: 08/30/2022] [Indexed: 11/30/2022]
Abstract
Selective in situ activation of prodrugs or generation of bioactive drugs is an important approach to reducing the side effects of chemotherapy. Herein, a tailored ROS-activable prodrug nanomedicine (Cu-SK@DTC-PPB) was developed as the prodrug activation nanoamplifier for highly selective antitumor therapy. Cu-SK@DTC-PPB was rationally constructed by the diethyldithiocarbamate (DTC) prodrug DTC-PPB and the nanoscale coordinated framework Cu-SK based on copper and the ROS generator shikonin (SK). Cu2+, SK and DTC were kept in the inactive state in the fabricated Cu-SK@DTC-PPB. In the presence of ROS within tumors, DTC-PPB can be activated to release less cytotoxic DTC, which can rapidly chelate Cu2+ from the Cu-SK framework to synthesize highly cytotoxic Cu(DTC)2 and induce SK to release in a cascade. The released SK can generate ROS to increase the intracellular ROS level, further activating DTC-PPB to release more DTC. That is, Cu-SK@DTC-PPB can undergo a self-amplifying positive feedback loop to induce numerous bioactive Cu(DTC)2 formation and SK release triggered by a small amount of ROS within the tumor microenvironment, which endows the transformation of "less toxic-to-high toxic" and thus significantly improve its selectivity towards tumors. Therefore, this study provides a new strategy of prodrug activation for tumor therapy with high efficiency and low toxicity. STATEMENT OF SIGNIFICANCE: Owing to the striking difference in ROS level between cancer cells and normal cells, ROS-responsive prodrugs are regarded as a promising approach for tumor-specific therapy. However, the stability and responsiveness of prodrugs are hard to balance. Preferable sensitivity may cause premature activation while favorable stability may lead to incomplete prodrug activation and insufficient active drug release. This study provides a tailored ROS-responsive prodrug activation nanoamplifier with favorable stability and effective prodrug activation capacity. The nanoamplifier can undergo a self-amplifying positive feedback loop to achieve numerous bioactive drugs generation in situ under ROS triggers within the tumor microenvironment, showing the enhanced antitumor therapeutic effect. Thus, this study provides a new strategy for prodrug activation and tumor-specific therapy.
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Affiliation(s)
- Zeqian Huang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Yaqing Ding
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Yong Luo
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Meixu Chen
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Zishan Zeng
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Tao Zhang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Yue Sun
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Yanjuan Huang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Chunshun Zhao
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China.
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Abstract
Amyloid-β (Aβ) peptides are involved in Alzheimer's disease (AD) development. The interactions of these peptides with copper and zinc ions also seem to be crucial for this pathology. Although Cu(II) and Zn(II) ions binding by Aβ peptides has been scrupulously investigated, surprisingly, this phenomenon has not been so thoroughly elucidated for N-truncated Aβ4-x-probably the most common version of this biomolecule. This negligence also applies to mixed Cu-Zn complexes. From the structural in silico analysis presented in this work, it appears that there are two possible mixed Cu-Zn(Aβ4-x) complexes with different stoichiometries and, consequently, distinct properties. The Cu-Zn(Aβ4-x) complex with 1:1:1 stoichiometry may have a neuroprotective superoxide dismutase-like activity. On the other hand, another mixed 2:1:2 Cu-Zn(Aβ4-x) complex is perhaps a seed for toxic oligomers. Hence, this work proposes a novel research direction for our better understanding of AD development.
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18
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Kumar P, Kumar V, Kaur N, Mobin SM, Kaur P, Singh K. A fluorene based probe: Synthesis and "turn-on" water sensitivity of the in-situ formed Cu 2+ complex: Application in bio-imaging. Anal Chim Acta 2022; 1189:339211. [PMID: 34815050 DOI: 10.1016/j.aca.2021.339211] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/08/2021] [Accepted: 10/20/2021] [Indexed: 01/06/2023]
Abstract
A new fluorene based probe (FTH) has been evaluated for its photo-physical properties in solution as well as in the aggregated state/viscous environment. Addition of a poor solvent (water) to the solution of the probe in a good (acetonitrile) solvent significantly enhanced the otherwise weak emission due to aggregation induced emission (AIE). The emission enhancement is also related to the increase in viscosity of the solution, leading to the restricted intramolecular rotation of the peripheral (phenyl) groups. Interestingly, the emission behaviour of the non-emissive in-situ formed Cu2+ complex is drastically modulated in the presence of water. The solution of the putative Cu2+ complex of the probe turns highly emissive (yellow colour) upon addition of a small fraction of water (up to 7.6 wt %), but the yellow emission diminishes upon increasing higher water fraction. We propose that the initially formed Cu2+ complex undergoes hydrolysis in the presence of higher water content releasing the free amine possessing the diaryl amino rotors thus rendering the solution non-emissive. Thus the current probe being reported herein discloses its potential to generate trace water sensitive turn-on Cu2+ complex. Additionally, the bio-imaging potential of FTH for live cancer cells and its sensitivity towards intracellular presence of Cu2+ ions has been demonstrated.
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Affiliation(s)
- Pawan Kumar
- Department of Chemistry, UGC Centre of Advanced Study, Guru Nanak Dev University, Amritsar, 143005, India
| | - Virendra Kumar
- Department of Chemistry, UGC Centre of Advanced Study, Guru Nanak Dev University, Amritsar, 143005, India
| | - Navpreet Kaur
- Discipline of Bioscience and BioMedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552, India
| | - Shaikh M Mobin
- Discipline of Bioscience and BioMedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552, India; Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552, India; Discipline of Metallurgy Engineering and Material Science, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552, India
| | - Paramjit Kaur
- Department of Chemistry, UGC Centre of Advanced Study, Guru Nanak Dev University, Amritsar, 143005, India.
| | - Kamaljit Singh
- Department of Chemistry, UGC Centre of Advanced Study, Guru Nanak Dev University, Amritsar, 143005, India.
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19
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Wang L, Luo Z, Hong Y, Chelme-Ayala P, Meng L, Wu Z, Gamal El-Din M. The treatment of electroplating wastewater using an integrated approach of interior microelectrolysis and Fenton combined with recycle ferrite. Chemosphere 2022; 286:131543. [PMID: 34303045 DOI: 10.1016/j.chemosphere.2021.131543] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/17/2021] [Accepted: 07/10/2021] [Indexed: 06/13/2023]
Abstract
Heavy metal ions in chelated forms have aroused great concerns because of their high solubility, poor biodegradation and extreme stability. In this research, an efficient strategy, interior microelectrolysis-Fenton-recycle ferrite (IM-Fenton-RF), was developed to treat simulated electroplating wastewater containing chelated copper at room temperature. The decomplexation of chelated copper was carried out by both interior microelectrolysis and Fenton reactions. IM process can not only partly degrade the complexes of chelated copper via the microelectrolysis reaction but also it produces Fe2+ ions for the Fenton reaction. After decomplexation, the IM-Fenton effluent directly flowed into the RF reactor for copper ions removal. Under optimum reaction conditions (reflux ratio = 0.37, Fe2+ concentration = 9.20 g/L at pH 10.18), 99.9% copper was removed by the IM-Fenton-RF system. The produced IM-Fenton-RF sludge is based on ferrite precipitate and has several advantages over metal hydroxides sludge. Ferrite sludge is stable owing to the stability of ferrite's crystal structure, while the toxicity characteristic leaching procedure (TCLP) test meets relevant standards. The sedimentation rate and volume of ferrite sludge were 3.86 times faster and 11.0 times lower than those of metal hydroxides sludge. Furthermore, the yielding sludge of ferrite can be recovered and utilized for the synthesis of Fe-C metallic species, the main compound of IM packing for interior microelectrolysis reaction. All these results show that a combination of IM-Fenton and RF is an effective approach to treat wastewater containing chelated copper, showing great potential for industrial applications.
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Affiliation(s)
- Lei Wang
- School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China; School of Environmental Resources, AnQing Normal University, No.1318 Jixian North Road, Anqing, 246133, China
| | - Zhijun Luo
- School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China.
| | - Yongxiang Hong
- School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China
| | - Pamela Chelme-Ayala
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Lingjun Meng
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Zhiren Wu
- School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China
| | - Mohamed Gamal El-Din
- School of the Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China; Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada.
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Mohan B, Choudhary M. Synthesis, crystal structure, computational study and anti-virus effect of mixed ligand copper (II) complex with ONS donor Schiff base and 1, 10-phenanthroline. J Mol Struct 2021; 1246:131246. [PMID: 34658419 DOI: 10.1016/j.molstruc.2021.131246] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/31/2021] [Accepted: 08/03/2021] [Indexed: 12/16/2022]
Abstract
This work deals with the synthesis, crystal structure, computational study and antiviral potential of mixed ligand copper(II) complex [Cu(L)(phen)](1), (where, H2L = (Z)-N'-((E)-2-hydroxy-3,5-diiodobenzylidene)-N,N-dimethylcarbamohydrazonothioic acid, phen = 1,10-phenanthroline). The Schiff base ligand (H2L) is coordinated with Cu(II) ion in O, N, S-tridentate mode. The copper complex (1) crystallized in the monoclinic system of the space group P21/c with eight molecules in the unit cell and reveals a square pyramidal geometry. Furthermore, we also perform quantum chemical calculations to get insights into the structure-property relationship and functional properties of ligand (H2L) and its copper (II) complex [Cu(L)(phen)](1). Complex [Cu(L)(phen)](1) was also virtually designed in-silico evaluation by Swiss-ADME. Additionally, inspiring by recent developments to find a potential inhibitor for the COVID-19 virus, we have also performed molecular docking study of ligand and its copper complex (1) to see if our compounds shows an affinity for the main protease (Mpro) of COVID-19 spike protein (PDB ID: 7C8U). Interestingly, the results are found quite encouraging where the binding affinity and inhibition constant were found to be -7.14 kcal/mol and 5.82 μM for ligand (H2L) and -6.18 kcal/mol and 0.76 μM for complex [Cu(L)(phen)](1) with Mpro protein. This binding affinity is reasonably well as compared to recently known antiviral drugs. For instance, the binding affinity of ligand and complex was found to be better than docking results of chloroquine (-6.293 kcal/mol), hydroxychloroquine (-5.573 kcal/mol) and remdesivir (-6.352 kcal/mol) with Mpro protein. The present study may offer the technological solutions and potential inhibition to the COVID-19 virus in the ongoing and future challenges of the global community. In the framework of synthesis and characterization of mixed ligand copper (II) complex; the major conclusions can be drawn as follow.
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21
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Han S, Wang Y. Synthesis, Characterization and Crystal Structures of Schiff Base Copper Complexes with Urease Inhibitory Activity. Acta Chim Slov 2021; 68:961-969. [PMID: 34918756 DOI: 10.17344/acsi.2021.6965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/16/2021] [Indexed: 11/19/2022] Open
Abstract
Urease inhibitors can inhibit the decomposition rate of urea, and decrease the air pollution caused by ammonia. In this paper, four new copper(II) complexes [CuL(ONO2)]n (1), [Cu2L2(μ1,3-N3)2] (2), [CuBrL] (3), and [CuClL] (4), where L = 5-bromo-2-(((2-methylamino)ethyl)imino)methyl)phenolate, have been synthesized and characterized. The complexes were characterized by elemental analyses, IR and UV-Vis spectroscopy, molar conductivity, and single crystal X-ray diffraction. X-ray analysis reveals that Cu atoms in complexes 1 and 2 are in square pyramidal coordination, and those in complexes 3 and 4 are in square planar coordination. The molecules of the complexes are linked through hydrogen bonds and π···π interactions. The inhibitory effects of the complexes on Jack bean urease were studied, which showed that the complexes have effective activity on urease.
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22
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de Oliveira Krambeck Franco M, Dias Castro GA, Vilanculo C, Fernandes SA, Suarez WT. A color reaction for the determination of Cu 2+ in distilled beverages employing digital imaging. Anal Chim Acta 2021; 1177:338844. [PMID: 34482892 DOI: 10.1016/j.aca.2021.338844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 07/03/2021] [Accepted: 07/06/2021] [Indexed: 12/01/2022]
Abstract
In this work, we describe for the first time the synthesis of a thiocarbazone for the selective determination of Cu2+ in distilled beverages. The method was based on the complexation reaction of Cu2+ with the thiocarbazone, and the colored product was analyzed using a smartphone application. The thiocarbazone reacts with Cu2+ to form a 1:1 (metal:ligand) complex. The Cu2+ complex was characterized by UV, IR and NMR spectral analyses. The proposed reaction yields a yellow color, and therefore, channel B of the RGB system was used in the analysis. After optimizing the reaction conditions, an analytical curve was obtained to determine Cu2+ concentrations ranging between 0.25 and 6.75 mg L-1; the use of 400 μL sample volumes led to a relative standard deviation (n = 5) of 3.2% and a detection limit of 0.18 mg L-1. Recovery experiments were performed with sugar cane spirits, whiskies and tequilas to evaluate the accuracy of the method, and the recovery obtained ranged from 80.5 to 112.2%.
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Affiliation(s)
| | - Gabriel Abranches Dias Castro
- Grupo de Química Supramolecular e Biomimética (GQSB), Departamento de Química, Centro de Ciências Exatas e Tecnológica, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Castelo Vilanculo
- Departamento de Química, Centro de Ciências Exatas e Tecnológica, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Sergio Antonio Fernandes
- Grupo de Química Supramolecular e Biomimética (GQSB), Departamento de Química, Centro de Ciências Exatas e Tecnológica, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Willian Toito Suarez
- Departamento de Química, Centro de Ciências Exatas e Tecnológica, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil.
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23
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Alshanski I, Shalev DE, Yitzchaik S, Hurevich M. Determining the structure and binding mechanism of oxytocin-Cu 2+ complex using paramagnetic relaxation enhancement NMR analysis. J Biol Inorg Chem 2021; 26:809-15. [PMID: 34459989 DOI: 10.1007/s00775-021-01897-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/23/2021] [Indexed: 12/30/2022]
Abstract
Oxytocin is a neuropeptide that binds copper ions in nature. The structure of oxytocin in interaction with Cu2+ was determined here by NMR, showing which atoms of the peptide are involved in binding. Paramagnetic relaxation enhancement NMR analyses indicated a binding mechanism where the amino terminus was required for binding and subsequently Tyr2, Ile3 and Gln4 bound in that order. The aromatic ring of Tyr2 formed a π-cation interaction with Cu2+. Oxytocin copper complex structure revealed by paramagnetic relaxation enhancement NMR analyses.
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Brückmann T, Becker J, Würtele C, Seuffert MT, Heuler D, Müller-Buschbaum K, Weiß M, Schindler S. Characterization of copper complexes with derivatives of the ligand (2-aminoethyl)bis(2-pyridylmethyl)amine (uns-penp) and their reactivity towards oxygen. J Inorg Biochem 2021; 223:111544. [PMID: 34333248 DOI: 10.1016/j.jinorgbio.2021.111544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 07/05/2021] [Accepted: 07/12/2021] [Indexed: 11/18/2022]
Abstract
A series of copper(I) complexes with ligands derived from the tripodal ligand (2-aminoethyl)bis(2-pyridylmethyl)amine (uns-penp) have been structurally characterized and their redox chemistry analyzed by cyclic voltammetry. While the redox potentials of most of the complexes were similar their reactivity towards dioxygen was quite different. While the complex with a ferrocene derived ligand of uns-penp reacted in solution at low temperatures in a two-step reaction from the preliminary formed mononuclear end-on superoxido complex to a quite stable dinuclear peroxido complex it did not react with dioxygen in the solid state. Other complexes also did not react with dioxygen in the solid state while some showed a reversible formation to a green compound, indicating formation of an end-on superoxido complex that unfortunately so far could not be characterized. In contrast, copper complexes with the Me2uns-penp and Et-iProp-uns-penp formed dinuclear peroxido complexes in a solid-state reaction. While the reaction of dioxygen with the [Cu(Me2uns-penp]BPh4 was quite slow an instant reaction took place for [Cu(Et-iProp-uns-penp]BPh. Very unusual, it turned out that crystals of the copper(I) complex that could be structurally characterized still were crystalline when reacted with dioxygen. Therefore, it was possible to solve the structure of the corresponding dinuclear peroxido complex directly from the same batch of crystals. The crystalline structures of the copper(I) and copper(II) complex revealed that the reason for this is the fact, that the copper(I) complex is kind of preorganized for the uptake of dioxygen and does not really change in its overall structure when being oxidized.
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Affiliation(s)
- Tim Brückmann
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 17, 35392 Gießen, Germany
| | - Jonathan Becker
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 17, 35392 Gießen, Germany
| | - Christian Würtele
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 17, 35392 Gießen, Germany
| | - Marcel Thomas Seuffert
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 17, 35392 Gießen, Germany
| | - Dominik Heuler
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 17, 35392 Gießen, Germany
| | - Klaus Müller-Buschbaum
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 17, 35392 Gießen, Germany
| | - Morten Weiß
- Fakultät für Biologie, Chemie und Geowissenschaften, Universität Bayreuth, Universitätsstrasse 30, 95447 Bayreuth, Germany
| | - Siegfried Schindler
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 17, 35392 Gießen, Germany.
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25
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Arikrishnan S, Loh JS, Teo XW, Bin Norizan F, Low ML, Lee SH, Foo JB, Tor YS. Ternary Copper (II) Complex Induced Apoptosis and Cell Cycle Arrest in Colorectal Cancer Cells. Anticancer Agents Med Chem 2021; 22:999-1011. [PMID: 34238173 DOI: 10.2174/1871520621666210708100019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 03/26/2021] [Accepted: 04/26/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND The lack of specificity, severe side effects, and development of drug resistance have largely limited the use of platinum-based compounds in cancer treatment. Therefore, copper complexes have emerged as potential alternatives to platinum-based compounds. OBJECTIVE Ternary copper (II) complex incorporated with 1-10-phenanthroline and L-tyrosine was investigated for its anti-cancer effects in HT-29 colorectal cancer cells. METHODS Cytotoxic effects of ternary copper (II) complex in HT-29 cells were evaluated using MTT assay, Real-Time Cell Analysis (RTCA), and lactate dehydrogenase (LDH) assay. Cell cycle analysis was performed using flow cytometry. Apoptosis induction was studied by Annexin V-FITC/propidium iodide (PI) staining and mitochondrial membrane potential analysis (JC-10 staining) using flow cytometry. Intracellular reactive oxygen species (ROS) were detected by DCFH-DA assay. The expression of proteins involved in the apoptotic signalling pathway (p53, caspases, and PARP-1) was evaluated by western blot analysis. RESULTS Ternary copper (II) complex reduced the cell viability of HT-29 cells in a time- and dose-dependent manner, with IC50 of 2.4 ± 0.4 and 0.8 ± 0.04 µM at 24 and 48 hours, respectively. Cell cycle analysis demonstrated induction of S-phase cell cycle arrest. Morphological evaluation and Annexin V-FITC/PI flow cytometry analysis confirmed induction of apoptosis that was further supported by cleavage and activation of caspase-8, caspase-9, caspase-3, and PARP-1. Mutant p53 was also downregulated in a dose-dependent manner. No LDH release, mitochondrial membrane potential disruption, and ROS production were observed. CONCLUSION Ternary copper (II) complex holds great potential to be developed for colorectal cancer treatment.
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Affiliation(s)
- Sathiavani Arikrishnan
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500, Subang Jaya, Selangor, Malaysia
| | - Jian Sheng Loh
- School of Pharmacy, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500, Subang Jaya, Selangor, Malaysia
| | - Xian Wei Teo
- School of Pharmacy, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500, Subang Jaya, Selangor, Malaysia
| | - Faris Bin Norizan
- School of Pharmacy, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500, Subang Jaya, Selangor, Malaysia
| | - May Lee Low
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia
| | - Sau Har Lee
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500, Subang Jaya, Selangor, Malaysia
| | - Jhi Biau Foo
- School of Pharmacy, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500, Subang Jaya, Selangor, Malaysia
| | - Yin Sim Tor
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500, Subang Jaya, Selangor, Malaysia
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Inamdar PR, Sheela A. Peculiar DNA partial threading intercalative ability of tetradentate copper complex based on ONO hydrazone backbone and an ancillary ligand. Nucleosides Nucleotides Nucleic Acids 2021; 40:518-529. [PMID: 33719900 DOI: 10.1080/15257770.2021.1897839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Multidentate copper metal complexes have been in the limelight in the area of DNA interaction studies exhibiting intercalation, groove binding and cross linking modes. Design of metal complex based on the versatile ligands decides their mode of DNA binding behavior. Based on this, a tetradentate Copper (II) complex, [Cu(L)(4,4'-bpy)], is synthesized using ONO hydrazone ligand and ancillary ligand, 4,4'-bipyridine. It is characterized by physico-chemical and UV-Visible, FTIR, Mass and EPR spectroscopic techniques. The binding pattern of the characterized complex with DNA has been assessed by UV absorption and fluorescence spectral titrations as well as viscosity studies and it has exhibited peculiar threading intercalation. The binding constant, Kb value of the synthesized complex was found to be (4.38 ± 0.09) × 104 M-1, greater than that of the hydrazone ligand (Kb = 2.29 × 104 M-1) and lesser than the classical intercalator ethidium bromide - EtBr (Kb = 107). The fluorescence quenching assays in the presence of ethidium bromide and viscometric studies show threading intercalative mode of binding of the complex to the DNA base pairs. Molecular docking studies further supports such a binding pattern with the bipyridine ring of the complex intercalating with deoxycytosine nucleobase of DNA. ADME (Absorption, Distribution, Metabolism and Excretion) parameters of the complex and ligand were predicted to get an idea of drug likeliness and to correlate the structural properties with semi DNA intercalative pattern of the same.
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Affiliation(s)
- Poonam R Inamdar
- Department of Pharmaceutical Chemistry, School of Pharmacy, Vishwakarma University, Pune, MH, India
| | - A Sheela
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, TN, India
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27
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Ali A, Sepay N, Afzal M, Sepay N, Alarifi A, Shahid M, Ahmad M. Molecular designing, crystal structure determination and in silico screening of copper(II) complexes bearing 8-hydroxyquinoline derivatives as anti-COVID-19. Bioorg Chem 2021; 110:104772. [PMID: 33676041 DOI: 10.1016/j.bioorg.2021.104772] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 02/06/2021] [Accepted: 02/22/2021] [Indexed: 12/16/2022]
Abstract
The pandemic by COVID-19 is hampering everything on the earth including physical and mental health, daily life and global economy. At the moment, there are no defined drugs, while few vaccines are available in the market to combat SARS-CoV-2. Several organic molecules were designed and tested against the virus but they did not show promising activity. In this work we designed two copper complexes from the ligands analogues with chloroquine and hydroxychloroquine. Both the ligands and complexes were well characterized by using various spectroscopic, thermal and X-ray diffraction techniques. Both the complexes as well as ligands were screened through in silico method with the chloroquine and hydroxychloroquine which essentially proved pivotal for successful understanding towards the target protein and their mechanism of action. The results indicated that the balanced hydrophobic and polar groups in the complexes favor their binding in the active site of the viral ADP-ribose-1 monophosphatase enzyme over the parent organic molecules.
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28
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Wang L, Wei ZL, Liu C, Dong WK, Ru JX. Synthesis and characterization for a highly selective bis(salamo)-based chemical sensor and imaging in living cell. Spectrochim Acta A Mol Biomol Spectrosc 2020; 239:118496. [PMID: 32470813 DOI: 10.1016/j.saa.2020.118496] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 05/15/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
A new sensor H5L for continuous identification of Cu2+, Al3+ and lysine was synthesized by Schiff base reactions. The sensor could specifically recognized Cu2+ in the EtOH/H2O (1:1 v/v) solution by UV-vis spectra, and the binding constant with Cu2+ can reach 1011 M-1, meanwhile, it was found by the naked-eye that the color of the solution was changed from colorless to yellow. The copper complex L-Cu2+ formed by the sensor H5L and Cu2+ could further recognize Al3+ and lysine in the fluorescence spectra. The LOD values of the three objects were 2.67 × 10-8, 1.96 × 10-8 and 5.59 × 10-9 M, respectively. In addition, fluorescence intracellular images of Al3+ and lysine were performed and obtained satisfactory results.
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Affiliation(s)
- Lan Wang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China
| | - Zhi-Li Wei
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China
| | - Chang Liu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China
| | - Wen-Kui Dong
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China.
| | - Jia-Xi Ru
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu 730046, China.
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29
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Khan RA, Khan MR, Usman M, Sayeed F, Alghamdi HA, Alrumman S, Alharbi W, Farshori NN, Al-Oqail MM, Siddiqui MR, Khanjer MA, Alsalme A. β-Carboline copper complex as a potential mitochondrial-targeted anticancer chemotherapeutic agent: Favorable attenuation of human breast cancer MCF7 cells via apoptosis. Saudi J Biol Sci 2020; 27:2164-73. [PMID: 32714043 DOI: 10.1016/j.sjbs.2020.05.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/16/2020] [Accepted: 05/01/2020] [Indexed: 12/19/2022] Open
Abstract
The development of preferentially selective cancer chemotherapeutics is a new trend in drug research. Thus, we designed and synthesized novel ternary complexes, [Cu(tryp)(Hnor)2(DMSO)]NO3 (1) and [Zn(tryp)(Hnor)2(DMSO)]NO3(2) (tryp = DL-Tryptophane; Hnor = Norharmane, β-carboline; DMSO = Dimethyl sulfoxide), characterized with elemental analysis, FTIR, UV–vis, FL, NMR, ESI-MS, and molar conductivity. Furthermore, the TD-DFT studies with UV–vis and FTIR validated the proposed structures of 1 and 2. Moreover, we evaluated the HOMO-LUMO energy gap and found that 1 has a smaller energy gap than 2. Then, 1 and 2 were assessed for anticancer chemotherapeutic potential against cancer cell lines MCF7 (human breast cancer) and HepG2 (human liver hepatocellular carcinoma) as well as the non-tumorigenic HEK293 (human embryonic kidney) cells. The MTT assay illustrated the preferentially cytotoxic behavior of 1 when compared with that of 2 and cisplatin (standard drug) against MCF7 cells. Moreover, 1 was exposed to MCF7 cells, and the results indicated the arrest of the G2/M phases, which followed the apoptotic pathway predominantly. Generation of ROS, GSH depletion, and elevation in LPO validated the redox changes prompted by 1. These studies establish the great potential of 1 as a candidate for anticancer therapeutics.
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Lu X, Lin B, Xu N, Huang H, Wang Y, Lin JM. Evaluation of the accumulation of disulfiram and its copper complex in A549 cells using mass spectrometry. Talanta 2020; 211:120732. [PMID: 32070566 DOI: 10.1016/j.talanta.2020.120732] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/04/2020] [Accepted: 01/08/2020] [Indexed: 12/22/2022]
Abstract
The famous alcohol-aversion drug disulfiram (DSF) is a promising candidate for repurposing in cancer therapy, as indicated by many ongoing and completed clinical trials. Existing researches focus on demonstrating that the anti-cancer activity of DSF is enhanced by copper ions, or solving the problem that DSF is easily decomposed in the body to lose its activity. However, the metabolic kinetics of its ultimate anti-cancer metabolite DDC-Cu (bis-diethyldithiocarbamate-copper) in cells and how it exerts anti-cancer mechanisms remain unclear. In this work, mass spectrometric evaluation of the intracellular and extracellular accumulation of DSF and its copper complex DDC-Cu was performed. Combined with cytotoxicity assay, staining analysis and flow cytometry, we found that DDC-Cu could easily pass through the cell membrane of A549 cells, and accumulate intracellularly for a long time. This process can lead to cellular morphological changes, an increase in ROS content, cell cycle arrest in the G0/G1 phase and apoptosis. Besides, molecular cancer-relevant targets of DDC-Cu in cancer cells were further discussed. This work investigated the cytotoxic mechanism of DDC-Cu, which has important clinical significance for its application in cancer therapy.
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Affiliation(s)
- Xinling Lu
- Department of Chemistry,School of Science,Tianjin University,Tianjin, 300075,China; Department of Chemistry,Beijing Key Laboratory of Microanalytical Methods and Instrumentation,MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University,Beijing, 100084,China
| | - Binxin Lin
- Department of Chemistry,Beijing Key Laboratory of Microanalytical Methods and Instrumentation,MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University,Beijing, 100084,China
| | - Ning Xu
- Department of Chemistry,Beijing Key Laboratory of Microanalytical Methods and Instrumentation,MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University,Beijing, 100084,China
| | - Hua Huang
- Department of Chemistry,School of Science,Tianjin University,Tianjin, 300075,China; Department of Chemistry,Beijing Key Laboratory of Microanalytical Methods and Instrumentation,MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University,Beijing, 100084,China
| | - Yong Wang
- Department of Chemistry,School of Science,Tianjin University,Tianjin, 300075,China.
| | - Jin-Ming Lin
- Department of Chemistry,Beijing Key Laboratory of Microanalytical Methods and Instrumentation,MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University,Beijing, 100084,China.
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31
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Shao J, Li M, Guo Z, Jin C, Zhang F, Ou C, Xie Y, Tan S, Wang Z, Zheng S, Wang X. TPP-related mitochondrial targeting copper (II) complex induces p53-dependent apoptosis in hepatoma cells through ROS-mediated activation of Drp1. Cell Commun Signal 2019; 17:149. [PMID: 31744518 PMCID: PMC6862763 DOI: 10.1186/s12964-019-0468-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 10/22/2019] [Indexed: 12/19/2022] Open
Abstract
Background In recent years, copper complexes have gradually become the focus of potential anticancer drugs due to their available redox properties and low toxicity. In this study, a novel mitochondrion-targeting copper (II) complex, [Cu (ttpy-tpp)Br2] Br (simplified as CTB), is first synthesized by our group. CTB with tri-phenyl-phosphine (TPP), a targeting and lipophilic group, can cross the cytoplasmic and mitochondrial membranes of tumor cells. The present study aims to investigate how CTB affects mitochondrial functions and exerts its anti-tumor activity in hepatoma cells. Methods Multiple molecular experiments including Flow cytometry, Western blot, Immunofluorescence, Tracker staining, Transmission Electron Microscopy and Molecular docking simulation were used to elucidate the underlying mechanisms. Human hepatoma cells were subcutaneously injected into right armpit of male nude mice for evaluating the effects of CTB in vivo. Results CTB induced apoptosis via collapse of mitochondrial membrane potential (MMP), ROS production, Bax mitochondrial aggregation as well as cytochrome c release, indicating that CTB-induced apoptosis was associated with mitochondrial pathway in human hepatoma cells. Mechanistic study revealed that ROS-related mitochondrial translocation of p53 was involved in CTB-mediated apoptosis. Simultaneously, elevated mitochondrial Drp1 levels were also observed, and interruption of Drp1 activation played critical role in p53-dependent apoptosis. CTB also strongly suppressed the growth of liver cancer xenografts in vivo. Conclusion In human hepatoma cells, CTB primarily induces mitochondrial dysfunction and promotes accumulation of ROS, leading to activation of Drp1. These stimulation signals accelerate mitochondrial accumulation of p53 and lead to the eventual apoptosis. Our research shows that CTB merits further evaluation as a chemotherapeutic agent for the treatment of Hepatocellular carcinoma (HCC).
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Affiliation(s)
- Jiangjuan Shao
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China.,State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Mengmeng Li
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China.,Department of Pharmaceutical Technology, Xuzhou Pharmaceutical Vocational College, Xuzhou, 221116, China
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Chun Jin
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Feng Zhang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Chunyan Ou
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yaochen Xie
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Shanzhong Tan
- The Nanjing Hospital Affiliated to Nanjing University of Chinese Medicine, Nanjing, 210003, China
| | - Zhenyi Wang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Shizhong Zheng
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Xiaoyong Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China.
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32
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Cetinkaya Y, Yurt MNZ, Avni Oktem H, Yilmaz MD. A Monostyryl Boradiazaindacene (BODIPY)-based lanthanide-free colorimetric and fluorogenic probe for sequential sensing of copper (II) ions and dipicolinic acid as a biomarker of bacterial endospores. J Hazard Mater 2019; 377:299-304. [PMID: 31173979 DOI: 10.1016/j.jhazmat.2019.05.108] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 05/18/2019] [Accepted: 05/30/2019] [Indexed: 06/09/2023]
Abstract
A new catechol-substituted monostyryl boradiazaindacene (BODIPY)-based lanthanide-free colorimetric and fluorogenic probe was developed for the sequential detection of Cu2+ ions and dipicolinic acid (DPA), a distinctive biomarker of bacterial endospores, with high sensitivity and selectivity. In the presence of Cu2+ ions, the blue solution of the probe changes to cyan and the fluorescence is quenched, however, the cyan color changes to blue immediately and the fluorescence is restored on contact with DPA, resulting from competitive binding of DPA that interact with Cu2+ ions. A practical application by using Geobacillus stearothermophilus spores was further studied and as low as 1.0 x 105 spores were detected.
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Affiliation(s)
- Yagmur Cetinkaya
- Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, 42080 Konya, Turkey
| | - Mediha Nur Zafer Yurt
- Research and Development Center for Diagnostic Kits (KIT-ARGEM), Konya Food and Agriculture University, 42080 Konya, Turkey; Institute of Science, Biotechnology Graduate Program, Konya Food and Agriculture University, Konya, 42080, Turkey
| | - Huseyin Avni Oktem
- Department of Biological Sciences, Middle East Technical University, 06800 Ankara, Turkey; Nanobiz R&D Ltd., Gallium Bld. No.18, METU Science Park, Ankara, Turkey
| | - M Deniz Yilmaz
- Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, 42080 Konya, Turkey; Research and Development Center for Diagnostic Kits (KIT-ARGEM), Konya Food and Agriculture University, 42080 Konya, Turkey; Institute of Science, Biotechnology Graduate Program, Konya Food and Agriculture University, Konya, 42080, Turkey.
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33
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Hasanin M, El-Henawy A, Eisa WH, El-Saied H, Sameeh M. Nano-amino acid cellulose derivatives: Eco-synthesis, characterization, and antimicrobial properties. Int J Biol Macromol 2019; 132:963-969. [PMID: 30959131 DOI: 10.1016/j.ijbiomac.2019.04.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/31/2019] [Accepted: 04/03/2019] [Indexed: 01/26/2023]
Abstract
Nowadays the using of eco-systems to synthesize new materials is the promising issue. In this work, new eco-synthesis method was developed to prepare antimicrobial cellulosic-amino acid base ligand and complexes with copper. The complex was characterized via different instrumental analysis (Fourier transform infrared spectroscopy (FTIR), UV-vis, differential scanning calorimetry (DSC), dynamic light scattering (DLS), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX)) as well as two antimicrobial screening tools (minimal inhibition concentration (MIC) and time required for killing). The UV-vis spectroscopic data indicates the metal to-ligand charge transfer transitions which is consistent with square planar geometry. DLS and SEM approved that the complex particles are in nano-size. Prepared complex appeared highly antimicrobial activity against all tested microbial organisms which can be described as broad spectrum antimicrobial agent. Rapid killing kinetics was beneficial in helping to resolve an infection more rapidly.
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Affiliation(s)
- Mohamed Hasanin
- Cellulose & Paper Dept., National Research Centre, El-Buhouth St., Dokki 12622, Egypt.
| | - Ahmed El-Henawy
- Chemistry Dept., Faculty of Science, Al-Azhar University, Cairo, Egypt.
| | - Wael H Eisa
- Spectroscopy Dept., Physics Division, National Research Centre, Cairo, Egypt
| | - Housni El-Saied
- Cellulose & Paper Dept., National Research Centre, El-Buhouth St., Dokki 12622, Egypt
| | - Manal Sameeh
- Chemistry Dept., Faculty of Applied Sciences, Um El Qura University, Makkah, Saudi Arabia
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34
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Nagendra Prasad HS, Manukumar HM, Karthik CS, Mallesha L, Mallu P. A novel copper (II) PAmPiCaT complex (cPAmPiCaTc) as a biologically potent candidate: A contraption evidence against methicillin-resistant Staphylococcus aureus (MRSA) and a molecular docking proof. Bioorg Med Chem 2019; 27:841-850. [PMID: 30718062 DOI: 10.1016/j.bmc.2019.01.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 01/23/2023]
Abstract
Increasing in the alarm against the resistant bacteria due to the failure of antibiotics, thereby the need of more efficiency/potent molecule to treat infections. In the present investigation, series of piperazine derivatives 5(a-l) compounds were synthesized and they were characterised by different spectral techniques such as 1H NMR, 13C NMR, IR and LCMS. A novel copper complex (cPAmPiCaTc) was developed for the first time by using potent analog 5e and characterized by IR and LCMS. The cPAmPiCaTc evaluated for antibacterial activity and showed excellent antimicrobial effect (12 ± 0.08 mm, ZOI) at MIC 20 µg/mL against MRSA compared to standard antibiotics streptomycin and bacitracin at MIC 10 µg/mL. The results show promising anti-staphylococcal action against MRSA which confirmed by membrane damage, bioelectrochemistry, gene regulation (SarA and DHFR), and in silico molecular docking studies. Further, the cPAmPiCaTc also showed excellent blood compatibility and this result pave the way for interesting metallodrug therapeutics in future against MRSA infections.
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Affiliation(s)
- H S Nagendra Prasad
- Department of Chemistry, Sri Jayachamarajendra College of Engineering, JSS Science and Technology University, Mysuru 570 006, Karnataka, India
| | - H M Manukumar
- Department of Chemistry, Sri Jayachamarajendra College of Engineering, JSS Science and Technology University, Mysuru 570 006, Karnataka, India
| | - C S Karthik
- Department of Chemistry, Sri Jayachamarajendra College of Engineering, JSS Science and Technology University, Mysuru 570 006, Karnataka, India
| | - L Mallesha
- PG Department of Chemistry, JSS College of Arts, Commerce and Science, Mysuru 570025, Karnataka, India
| | - P Mallu
- Department of Chemistry, Sri Jayachamarajendra College of Engineering, JSS Science and Technology University, Mysuru 570 006, Karnataka, India.
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35
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Polloni L, Seni Silva AC, Teixeira SC, Azevedo FVPV, Zóia MAP, da Silva MS, Lima PMAP, Correia LIV, do Couto Almeida J, da Silva CV, Rodrigues Ávila VM, Goulart LRF, Morelli S, Guerra W, Oliveira Júnior RJ. Action of copper(II) complex with β-diketone and 1,10-phenanthroline (CBP-01) on sarcoma cells and biological effects under cell death. Biomed Pharmacother 2019; 112:108586. [PMID: 30784909 DOI: 10.1016/j.biopha.2019.01.047] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/20/2018] [Accepted: 01/16/2019] [Indexed: 12/25/2022] Open
Abstract
This work reports the biological evaluation of a copper complex of the type [Cu(O-O)(N-N)ClO4], in which O-O = 4,4,4-trifluoro-1-phenyl-1,3-butanedione (Hbta) and N-N = 1,10-phenanthroline (phen), whose generic name is CBP-01. The cytotoxic effect of CBP-01 was evaluated by resazurin assay and cell proliferation was determined by MTT assay. DNA fragmentation was analyzed by gel electrophoresis. Cell cycle progression was detected through propidium iodide (PI) staining. Apoptosis and autophagy were determined by, respectively, Annexin V and 7-AAD staining and monodansylcadaverine (MDC) staining. The changes in intracellular reactive oxygen species levels were detected by DCFDA analysis. The copper complex CBP-01 showed in vitro antitumor activity with IC50s values of 7.4 μM against Sarcoma 180 and 26.4 against murine myoblast cells, displaying selectivity toward the tumor cell tested in vitro (SI > 3). An increase in reactive oxygen species (ROS) generation was observed, which may be related to the action mechanism of the complex. The complex CBP-01 may induce DNA damage leading cells to accumulate at G0/G1 checkpoint where, apparently, cells that are not able to recover from the damage are driven to cell death. Evidence has shown that cell death is initiated by autophagy dysfunction, culminating in apoptosis induction. The search for new metal-based drugs is focused on overcoming the drawbacks of already used agents such as acquired resistance and non-specificity; thus, the results obtained with CBP-01 show promising effects on cancer cells.
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36
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Wang Q, Sheng H, Jin L, Zhang Z, Wang W, Tang X. New fluorescent chemosensors based on mononuclear copper complex for highly selective and sensitive detection of phosphate anion in aqueous solution and living cells. Spectrochim Acta A Mol Biomol Spectrosc 2019; 207:96-104. [PMID: 30212664 DOI: 10.1016/j.saa.2018.09.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/02/2018] [Accepted: 09/05/2018] [Indexed: 06/08/2023]
Abstract
Three new probes, named, [Cu(L1)2]Cl2 (C1), [Cu(L2)2]Cl2 (C2) and [Cu(L3)2]Cl2 (C3) were synthesized and well characterized. The probes C1, C2 and C3 were successfully achieved for the efficient detection of PO43- as turn-on fluorescence chemosensors in DMSO/H2O (v:v = 2:8, Tris-HCl pH = 7.20). The limit of detection (LOD) of probes C1, C2 or C3 for PO43- could be as low as 0.029 μM, 0.048 μM, 0.079 μM, respectively, which were effectively applied for the determination of the PO43- concentration in environmental water of swimming pool. What's more, the binding constant between probes C1, C2, C3 and PO43- are estimated to be 3.11 × 107 M-1 (R2 = 0.9992), 1.84 × 107 M-1 (R2 = 0.9956), 1.93 × 107 M-1 (R2 = 0.9976), respectively. The proposed mechanism for the "on-off-on" fluorescence response was confirmed by ESI-MS and fluorescence spectrum. Moreover, the membrane-permeable probe C1 was successfully demonstrated in monitoring of PO43- in cultured HepG2 cells.
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Affiliation(s)
- Qingming Wang
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, Jiangsu 224051, People's Republic of China.
| | - Hui Sheng
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, Jiangsu 224051, People's Republic of China
| | - Lei Jin
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, Jiangsu 224051, People's Republic of China
| | - Zhiheng Zhang
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, Jiangsu 224051, People's Republic of China
| | - Wenling Wang
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, Jiangsu 224051, People's Republic of China
| | - Xinhui Tang
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, Jiangsu 224051, People's Republic of China
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37
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Fujie T, Okino S, Yoshida E, Yamamoto C, Naka H, Kaji T. Copper diethyldithiocarbamate as an inhibitor of tissue plasminogen activator synthesis in cultured human coronary endothelial cells. J Toxicol Sci 2018; 42:553-558. [PMID: 28904290 DOI: 10.2131/jts.42.553] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Recent developments have shown that organic-inorganic hybrid molecules have the potential to provide useful tools for analyzing biological systems. In the case of fibrinolysis, which is the phenomenon whereby fibrin is degraded by plasmin that has been converted from plasminogen via tissue plasminogen activator (t-PA) secreted from vascular endothelial cells, we hypothesized that there may be organic-inorganic hybrid molecules that could be used to analyze the mechanisms by which endothelial fibrinolysis is regulated. In our present study, we found that a copper complex - copper diethyldithiocarbamate (Cu10) - reduces t-PA activity in a conditioned medium of cultured human coronary endothelial cells by inhibiting the t-PA synthesis without changing the synthesis of plasminogen activator inhibitor type 1, which is a t-PA inhibitor. Copper sulfate, the Cu10 ligand, and zinc/iron complexes with the same Cu10 ligand, did not exhibit such biological activity. These results indicate that Cu10 has the potential to provide a useful tool for finding alternative pathways that downregulate endothelial t-PA synthesis.
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Affiliation(s)
- Tomoya Fujie
- Department of Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science.,Department of Environmental Health, Faculty of Pharmaceutical Sciences, Toho University
| | - Shiori Okino
- Department of Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Eiko Yoshida
- Department of Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Chika Yamamoto
- Department of Environmental Health, Faculty of Pharmaceutical Sciences, Toho University
| | - Hiroshi Naka
- Research Center for Materials Science, Nagoya University
| | - Toshiyuki Kaji
- Department of Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science
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38
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Carcelli M, Fisicaro E, Compari C, Contardi L, Rogolino D, Solinas C, Stevaert A, Naesens L. Antiviral activity and metal ion-binding properties of some 2-hydroxy-3-methoxyphenyl acylhydrazones. Biometals 2017; 31:81-89. [PMID: 29209895 DOI: 10.1007/s10534-017-0070-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 11/24/2017] [Indexed: 11/26/2022]
Abstract
Here we report on the results obtained from an antiviral screening, including herpes simplex virus, vaccinia virus, vesicular stomatitis virus, Coxsackie B4 virus or respiratory syncytial virus, parainfluenza-3 virus, reovirus-1 and Punta Toro virus, of three 2-hydroxy-3-methoxyphenyl acylhydrazone compounds in three cell lines (i.e. human embryonic lung fibroblast cells, human cervix carcinoma cells, and African Green monkey kidney cells). Interesting antiviral EC50 values are obtained against herpes simplex virus-1 and vaccinia virus. The biological activity of acylhydrazones is often attributed to their metal coordinating abilities, so potentiometric and microcalorimetric studies are here discussed to unravel the behavior of the three 2-hydroxy-3-methoxyphenyl compounds in solution. It is worth of note that the acylhydrazone with the higher affinity for Cu(II) ions shows the best antiviral activity against herpes simplex and vaccinia virus (EC50 ~ 1.5 µM, minimal cytotoxic concentration = 60 µM, selectivity index = 40).
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Affiliation(s)
- M Carcelli
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici) Parma Unit, University of Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy.
| | - E Fisicaro
- Food and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124, Parma, Italy
| | - C Compari
- Food and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124, Parma, Italy
| | - L Contardi
- Food and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124, Parma, Italy
| | - D Rogolino
- Department of Chemistry, Life Sciences and Environmental Sustainability and CIRCMSB (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici) Parma Unit, University of Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - C Solinas
- Chemistry and Pharmacy Department, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - A Stevaert
- Rega Institute for Medical Research, KU Leuven - University of Leuven, 3000, Louvain, Belgium
| | - L Naesens
- Rega Institute for Medical Research, KU Leuven - University of Leuven, 3000, Louvain, Belgium
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39
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Cucinotta V, Messina M, Contino A, Maccarrone G, Orlandini S, Giuffrida A. Chiral separation of terbutaline and non-steroidal anti-inflammatory drugs by using a new lysine-bridged hemispherodextrin in capillary electrophoresis. J Pharm Biomed Anal 2017; 145:734-741. [PMID: 28806570 DOI: 10.1016/j.jpba.2017.07.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/28/2017] [Accepted: 07/29/2017] [Indexed: 10/19/2022]
Abstract
A method for the separation of a mixture of terbutaline and non-steroidal anti-inflammatory drugs was developed using capillary electrophoresis with a new hemispherodextrin, ad hoc designed, the lysine - bridged hemispherodextrin (THLYSH). The use of lysine residues to bridge the trehalose capping unit moiety to the cyclodextrin cavity gives rise to a receptor with two long chains with amine nitrogen atoms, whose charge can be easily tuned as a function of the solution pH. The new hemispherodextrin was accurately characterised by ESI-MS and NMR spectroscopy, also highlighting its protonation behaviour. Circular dichroism and ESR spectroscopy measurements were also carried out to test its inclusion ability towards anthraquinone-3-sulfonate and its metal coordination ability towards copper(II) ion, respectively. Analogously to the other hemispherodextrins, the main skill of this new derivative lies in its chiral selector properties, as shown by the separation of the enantiomeric pairs of terbutaline and ibuprofen, flurbiprofen, suprofen and tiaprofenic acid by capillary electrophoresis. The focused use of the solution equilibria involved in the separations made it possible to understand the phenomena occurring in solution, and to finely tune the charge status of the receptor. In this way the chiral separation of the racemic mixture was successfully obtained, even if the receptor was individually used, differently by the other hemispherodextrins previously studied whose chiral separation capabilities are present only if used as binary mixtures.
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Affiliation(s)
- V Cucinotta
- Dept. of Chemical Sciences, University of Catania, Viale A. Doria 6, Catania, Italy
| | - M Messina
- Dept. of Chemical Sciences, University of Catania, Viale A. Doria 6, Catania, Italy
| | - A Contino
- Dept. of Chemical Sciences, University of Catania, Viale A. Doria 6, Catania, Italy
| | - G Maccarrone
- Dept. of Chemical Sciences, University of Catania, Viale A. Doria 6, Catania, Italy
| | - S Orlandini
- Dept. of Chemistry "U. Schiff", University of Florence, Via U. Schiff 6, Sesto Fiorentino, Florence, Italy
| | - A Giuffrida
- Dept. of Chemical Sciences, University of Catania, Viale A. Doria 6, Catania, Italy.
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Zhan F, Liao X, Gao F, Qiu W, Wang Q. Electroactive crown ester-Cu 2+ complex with in-situ modification at molecular beacon probe serving as a facile electrochemical DNA biosensor for the detection of CaMV 35s. Biosens Bioelectron 2017; 92:589-595. [PMID: 27829553 DOI: 10.1016/j.bios.2016.10.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 10/10/2016] [Accepted: 10/19/2016] [Indexed: 01/01/2023]
Abstract
A novel electrochemical DNA biosensor has been facilely constructed by in-situ assembly of electroactive 4'-aminobenzo-18-crown-6-copper(II) complex (AbC-Cu2+) on the free terminal of the hairpin-structured molecule beacon. The 3'-SH modified molecule beacon probe was first immobilized on the gold electrode (AuE) surface through self-assembly chemistry of Au-S bond. Then the crow ester of AbC was covalently coupled with 5'-COOH on the molecule beacon, and served as a platform to attach the Cu2+ by coordination with ether bond (-O-) of the crown cycle. Thus, an electroactive molecule beacon-based biosensing interface was constructed. In comparison with conventional methods for preparation of electroactive molecule beacon, the approach presented in this work is much simpler, reagent- and labor-saving. Selectivity study shows that the in-situ fabricated electroactive molecule beacon remains excellent recognition ability of pristine molecule beacon probe to well differentiate various DNA fragments. The target DNA can be quantatively determined over the range from 0.10pM to 0.50nM. The detection limit of 0.060pM was estimated based on signal-to-noise ratio of 3. When the biosensor was applied for the detection cauliflower mosaic virus 35s (CaMV 35s) in soybean extraction samples, satisfactory results are achieved. This work opens a new strategy for facilely fabricating electrochemical sensing interface, which also shows great potential in aptasensor and immurosensor fabrication.
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Affiliation(s)
- Fengping Zhan
- College of Chemistry and Environment, Fujian Province Key Laboratory of Morden Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Xiaolei Liao
- College of Chemistry and Environment, Fujian Province Key Laboratory of Morden Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Feng Gao
- College of Chemistry and Environment, Fujian Province Key Laboratory of Morden Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Weiwei Qiu
- College of Chemistry and Environment, Fujian Province Key Laboratory of Morden Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Qingxiang Wang
- College of Chemistry and Environment, Fujian Province Key Laboratory of Morden Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, PR China.
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41
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Wang Q, Sun H, Sha W, Chen J, Gu L, Wang D, Tang X. An optical material for the detection of trace S 2O 32- in milk based on a copper complex. Biometals 2017; 30:441-447. [PMID: 28405829 DOI: 10.1007/s10534-017-0017-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 04/09/2017] [Indexed: 11/28/2022]
Abstract
A novel S2O32- luminescent sensor (Cu2+-p-CPIP) was developed and the presence of S2O32- caused an obvious fluorescence enhancement at 420 nm upon excitation at 330 nm, which could be distinguished with the naked eye under a UV lamp. Remarkably, the compound exhibited excellent selective and sensitive response to S2O32- over other common anions with a micromolar limit of detection (0.442 μM) in DMSO/H2O (v/v, 1:1) buffer. The absorbance intensity and the color of Cu2+-p -CPIP solution changed gradually with the increase of S2O32- concentration. The proposed method was applied to the determination of S2O32- in milk samples and the recoveries were 97.5-105%. The preparation of Cu2+-p -CPIP exhibited the quick, simple and facile advantages. The results showed that Cu2+-p -CPIP can be a good candidate for simple, rapid and sensitive colorimetric detection of S2O32- in aqueous solution.
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Affiliation(s)
- Qingming Wang
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, 224051, Jiangsu, People's Republic of China. .,State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, People's Republic of China.
| | - Huifang Sun
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, 224051, Jiangsu, People's Republic of China
| | - Weilin Sha
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, 224051, Jiangsu, People's Republic of China
| | - Juan Chen
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, 224051, Jiangsu, People's Republic of China
| | - Liuyue Gu
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, 224051, Jiangsu, People's Republic of China
| | - Dong Wang
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, 224051, Jiangsu, People's Republic of China
| | - Xinhui Tang
- School of Pharmacy, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' University, Yancheng, 224051, Jiangsu, People's Republic of China.
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Abstract
Copper is a ubiquitous element in the environment as well as living organisms, with its redox capabilities and complexation potential making it indispensable for many cellular functions. However, these same properties can be highly detrimental to prokaryotes and eukaryotes when not properly controlled, damaging many biomolecules including DNA, lipids, and proteins. To restrict free copper concentrations, all bacteria have developed mechanisms of resistance, sequestering and effluxing labile copper to minimize its deleterious effects. This weakness is actively exploited by phagocytes, which utilize a copper burst to destroy pathogens. Though administration of free copper is an unreasonable therapeutic antimicrobial itself, due to insufficient selectivity between host and pathogen, small-molecule ligands may provide an opportunity for therapeutic mimicry of the immune system. By modulating cellular entry, complex stability, resistance evasion, and target selectivity, ligand/metal coordination complexes can synergistically result in high levels of antibacterial activity. Several established therapeutic drugs, such as disulfiram and pyrithione, display remarkable copper-dependent inhibitory activity. These findings have led to development of new drug discovery techniques, using copper ions as the focal point. High-throughput screens for copper-dependent inhibitors against Mycobacterium tuberculosis and Staphylococcus aureus uncovered several new compounds, including a new class of inhibitors, the NNSNs. In this review, we highlight the microbial biology of copper, its antibacterial activities, and mechanisms to discover new inhibitors that synergize with copper.
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Affiliation(s)
- Alex G Dalecki
- The University of Alabama at Birmingham, Birmingham, AL, United States
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Liu W, Qin Y, Liu S, Xing R, Yu H, Chen X, Li K, Li P. Synthesis, characterization and antifungal efficacy of C-coordinated O-carboxymethyl chitosan Cu(II) complexes. Carbohydr Polym 2016; 160:97-105. [PMID: 28115106 DOI: 10.1016/j.carbpol.2016.12.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/12/2016] [Accepted: 12/18/2016] [Indexed: 12/01/2022]
Abstract
A novel type of O-carboxymethyl chitosan Schiff bases (O-CSPX) was synthesized via a condensation reaction. After the coordination reaction of cupric ions, Cu(II) complexes (O-CSPX-Cu) were achieved. The theoretical structure of O-CSPX-Cu calculated by Gaussian 09 reveals that the copper ions underwent dsp2 hybridization, coordinated by the carbon atom in the p-π conjugate group and the oxygen atoms in the acetate ion. Then, the structures were confirmed by FT-IR, 1H NMR, CP-MAS 13C NMR, elemental analysis, DSC and XRD. The antifungal properties of O-CSPX-Cu against Phytophthora capsici (P. capsici), Gibberella zeae (G. zeae) and Glomerella cingulata (G. cingulata) were evaluated at concentrations ranging from 0.05mg/mL to 0.20mg/mL. The experiments indicated that the derivatives have significantly enhanced antifungal activity after copper ion complexation compared with the original chitosan. Moreover, it was shown that 0.20mg/mL of O-CSP3-Cu and O-CSP4-Cu can 100% inhibit the growth of P. capsici. The experimental results reveal that the antifungal efficiency is related to the space steric hindrance on the benzene ring, which may provide a novel direction for the development of copper fungicides.
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Affiliation(s)
- Weixiang Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yukun Qin
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Song Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Ronge Xing
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Huahua Yu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Xiaolin Chen
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Kecheng Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Pengcheng Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
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Yang L, Li X, Li X, Yan S, Ren Y, Wang M, Liu P, Dong Y, Zhang C. [Cu(phen)2](2+) acts as electrochemical indicator and anchor to immobilize probe DNA in electrochemical DNA biosensor. Anal Biochem 2015; 492:56-62. [PMID: 26403602 DOI: 10.1016/j.ab.2015.09.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 09/08/2015] [Accepted: 09/14/2015] [Indexed: 12/22/2022]
Abstract
We demonstrate a novel protocol for sensitive in situ label-free electrochemical detection of DNA hybridization based on copper complex ([Cu(phen)2](2+), where phen = 1,10-phenanthroline) and graphene (GR) modified glassy carbon electrode. Here, [Cu(phen)2](2+) acted advantageously as both the electrochemical indicator and the anchor for probe DNA immobilization via intercalative interactions between the partial double helix structure of probe DNA and the vertical aromatic groups of phen. GR provided large density of docking site for probe DNA immobilization and increased the electrical conductivity ability of the electrode. The modification procedure was monitored by electrochemical impedance spectroscopy (EIS). Square-wave voltammetry (SWV) was used to explore the hybridization events. Under the optimal conditions, the designed electrochemical DNA biosensor could effectively distinguish different mismatch degrees of complementary DNA from one-base mismatch to noncomplementary, indicating that the biosensor had high selectivity. It also exhibited a reasonable linear relationship. The oxidation peak currents of [Cu(phen)2](2+) were linear with the logarithm of the concentrations of complementary target DNA ranging from 1 × 10(-12) to 1 × 10(-6) M with a detection limit of 1.99 × 10(-13) M (signal/noise = 3). Moreover, the stability of the electrochemical DNA biosensor was also studied.
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Affiliation(s)
- Linlin Yang
- Department of Chemistry, School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Xiaoyu Li
- Department of Chemistry, School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Xi Li
- Department of Chemistry, School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China.
| | - Songling Yan
- Department of Chemistry, School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Yinna Ren
- Department of Chemistry, School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Mengmeng Wang
- Department of Chemistry, School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Peng Liu
- Department of Chemistry, School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Yulin Dong
- Department of Chemistry, School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Chaocan Zhang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China.
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Song WJ, Lin QY, Jiang WJ, Du FY, Qi QY, Wei Q. Synthesis, interaction with DNA and antiproliferative activities of two novel Cu(II) complexes with norcantharidin and benzimidazole derivatives. Spectrochim Acta A Mol Biomol Spectrosc 2015; 137:122-128. [PMID: 25218220 DOI: 10.1016/j.saa.2014.08.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 08/17/2014] [Accepted: 08/23/2014] [Indexed: 06/03/2023]
Abstract
Two novel complexes [Cu(L)2(Ac)2]·3H2O (1) (L=N-2-methyl benzimidazole demethylcantharate imide, C16H15N3O3, Ac=acetate, C2H3O2) and [Cu(bimz)2(DCA)] (2) (bimz=benzimidazole, C7H6N2; DCA=demethylcantharate, C8H8O5) were synthesized and characterized by elemental analysis, infrared spectra and X-ray diffraction techniques. Cu(II) ion was four-coordinated in complex 1, Cu(II) ion was five-coordinated in complex 2. A large amount of intermolecular hydrogen-bonding and π-π stacking interactions were observed in these complex structures. The DNA-binding properties of these complexes were investigated using electronic absorption spectra, fluorescence spectra, viscosity measurements and agarose gel electrophoresis. The interactions between the complexes and bovine serum albumin (BSA) were investigated by fluorescence spectra. The antiproliferative activities of the complexes against human hepatoma cells (SMMC7721) were tested in vitro. And the results showed that these complexes could bind to DNA in moderate intensity via partial intercalation, and complexes 1 and 2 could cleave plasmid DNA through hydroxyl radical mechanism. Title complexes could effectively quench the fluorescence of BSA through static quenching. Meanwhile, title complexes had stronger antiproliferative effect compared to L and Na2(DCA) within the tested concentration range. And complex 1 possessed more antiproliferative active than complex 2.
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Affiliation(s)
- Wen-Ji Song
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, 321004, PR China; College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China
| | - Qiu-Yue Lin
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, 321004, PR China; College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China.
| | - Wen-Jiao Jiang
- College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China
| | - Fang-Yuan Du
- College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China
| | - Qing-Yuan Qi
- College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China.
| | - Qiong Wei
- College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China
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46
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Mansour AM, Shehab OR. Trapping of muscle relaxant methocarbamol degradation product by complexation with copper(II) ion: spectroscopic and quantum chemical studies. Spectrochim Acta A Mol Biomol Spectrosc 2014; 128:263-271. [PMID: 24674917 DOI: 10.1016/j.saa.2014.02.142] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 02/13/2014] [Accepted: 02/21/2014] [Indexed: 06/03/2023]
Abstract
Structural properties of methocarbamol (Mcm) were extensively studied both experimentally and theoretically using FT IR, (1)H NMR, UV-Vis., geometry optimization, Mulliken charge, and molecular electrostatic potential. Stability arises from hyper-conjugative interactions, charge delocalization and H-bonding was analyzed using natural bond orbital (NBO) analysis. Mcm was decomposed in ethanol/water mixture at 80°C to guaifenesin [(RS)-3-(2-methoxyphenoxy)propane-1,2-diol] and carbamate ion [NH2COO(-)], where the degradation mechanism was explained by trapping the carbamate ion via the complexation with copper(II) ion. The structure of the isolated complex ([Cu(NH2COO)2(H2O)]⋅4H2O) was elucidated by spectral, thermal, and magnetic tools. Electronic spectra were discussed by TD-DFT and the descriptions of frontier molecular orbitals and the relocations of the electron density were determined. Calculated g-tensor values showed best agreement with experimental values from EPR when carried out using both the B3LYP and B3PW91 functional.
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Affiliation(s)
- Ahmed M Mansour
- Chemistry Department, Faculty of Science, Cairo University, Gamaa Street, Giza 12613, Egypt.
| | - Ola R Shehab
- Chemistry Department, Faculty of Science, Cairo University, Gamaa Street, Giza 12613, Egypt
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47
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Luo YH, Sun BW. Crystal structure, Hirshfeld surfaces and DNA cleavage investigation of two copper(II) complexes containing polypyridine and salicylide ligands. Spectrochim Acta A Mol Biomol Spectrosc 2014; 126:81-85. [PMID: 24589994 DOI: 10.1016/j.saa.2014.01.138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 01/21/2014] [Accepted: 01/27/2014] [Indexed: 06/03/2023]
Abstract
Two copper complexes 1 [Cu2(phen)2(salicylaldehyde)2(ClO4)2] and 2 [Cu2 (2,2'-dipyridyl)2(salicylaldehyde)2(ClO4)2] have been synthesized and characterized by elemental analysis and single-crystal X-ray diffraction. These two complexes were display binuclear structure with Cu(II) ions in distorted octahedral environment but antipodal orientation of the binuclear units between them. Molecular Hirshfeld surfaces revealed that the crystal structures of 1 and 2 were supported mainly by H-H, C-H⋯π, π⋯π (C-C), and C-H⋯O intermolecular interactions. DNA cleavage experiments of complexes 1 and 2 revealed that these complexes can intercalation with DNA.
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Affiliation(s)
- Yang-Hui Luo
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, PR China
| | - Bai-Wang Sun
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, PR China.
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48
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Yu M, Wang W, Zhang N. Convenient and selective "off-on" detection nitric oxide in solution and thin film with quinoline based fluorescence sensor. Spectrochim Acta A Mol Biomol Spectrosc 2014; 126:329-332. [PMID: 24680128 DOI: 10.1016/j.saa.2014.02.177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 02/19/2014] [Accepted: 02/24/2014] [Indexed: 06/03/2023]
Abstract
Quinoline based fluorescence sensor (1) was synthesized and characterized with mass spectra (MS), ((1))H nuclear magnetic resonance (((1))H NMR) spectrometer, elemental analyses, and infrared (IR) spectra. Following fluorescence experiments demonstrate 1 can coordinate with copper ions, and lead to fluorescence completely quenched. The 1-copper complex was used as a "turn-on" fluorescence biosensor to convenient and highly effective detect nitric oxide (NO) over other radicals in solution and PCL-based thin film. The finding would enable the quinoline based fluorescence probe to be an "off-on" convenient NO fluorescence probe.
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Affiliation(s)
- Miao Yu
- Department of Chemistry and Chemical Engineering, Huanghuai University, Zhumadian 463000, China
| | - Wei Wang
- Department of Oncology, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Ning Zhang
- Department of Chemistry and Chemical Engineering, Huanghuai University, Zhumadian 463000, China.
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49
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Thalamuthu S, Annaraj B, Neelakantan MA. A systematic investigation on biological activities of a novel double zwitterionic Schiff base Cu(II) complex. Spectrochim Acta A Mol Biomol Spectrosc 2014; 118:120-129. [PMID: 24044990 DOI: 10.1016/j.saa.2013.08.065] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 08/13/2013] [Accepted: 08/15/2013] [Indexed: 06/02/2023]
Abstract
Double zwitterionic amino acid Schiff base, o-vanillylidene-L-histidine (OVHIS) and its copper complex (CuOVHIS) have been synthesized and characterized. CuOVHIS has distorted octahedral geometry, and OVHIS coordinates the copper ion in a tetradentate manner (N2O2). The pKa of OVHIS in aqueous solution was studied by potentiometric and spectrophotometric methods. DNA binding behavior of the compounds was investigated using spectrophotometric, cyclic voltammetric, and viscosity methods. The efficacy of DNA cleaving nature was tested on pUC19 DNA. The in vitro biological activity was tested against various micro organisms. The effect of CuOVHIS on the surface feature of Escherichia coli was analyzed by SEM. DPPH assay studies revealed that CuOVHIS has higher antioxidant activity. OVHIS inhibits proliferation of HCT117 cells with half maximal inhibition (IC50) of 71.15±0.67. Chelation of OVHIS with Cu(II) ion enhances the inhibition of proliferation action (IC50=53.14±0.67).
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Affiliation(s)
- S Thalamuthu
- Chemistry Research Centre, National Engineering College, K.R. Nagar, Kovilpatti 628503, Thoothukudi District, Tamil Nadu, India
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50
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Song WJ, Cheng JP, Jiang DH, Guo L, Cai MF, Yang HB, Lin QY. Synthesis, interaction with DNA and antiproliferative activities of two novel Cu(II) complexes with Schiff base of benzimidazole. Spectrochim Acta A Mol Biomol Spectrosc 2013; 121:70-76. [PMID: 24220672 DOI: 10.1016/j.saa.2013.09.142] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 09/05/2013] [Accepted: 09/29/2013] [Indexed: 06/02/2023]
Abstract
Two novel copper(II) complexes with Schiff base of benzimidazole [Cu(L)Cl]2·CH3OH have been synthesized. HL(1) (N-(benzimidazol-2-ymethyl)-5-chlorosalicylideneimine, C15H11ClN3O) and HL(2) (N-(benzimidazol-2-ymethyl)-salicylideneimine, C15H12N3O) are ligands of complex (1) and complex (2), respectively. The complexes were characterized by elemental analysis, IR, UV-Vis, TGA and X-ray diffraction. Within the complexes, Cu(II) ions were four coordinated by two nitrogen atom of azomethine and imine, one phenolic oxygen atom from HL and one chloride atom. A distorted quadrilateral structure was formed. Complex (1) crystallized in the triclinic crystal system. Results showed that π-π stacking effect occurred due to the existence of aromatic ring from Schiff base and hydrogen bonding between methanol and adjacent atoms. The DNA binding properties of the complexes were investigated by electronic absorption spectra, fluorescence spectra and viscosity measurements. Results indicated that complexes bound to DNA via partial intercalation mode. The DNA binding constants Kb/(L mol(-1)) were 1.81×10(4) (1), 1.37×10(4) (2), 6.27×10(3) (HL(1)) and 3.14×10(3) (HL(2)) at 298 K. The title complexes could quench the emission intensities of EB-DNA system significantly. The results of agarose gel electrophoresis indicated complex (1) could cleave supercoiled DNA through the oxidative mechanism. The inhibition ratios revealed that complex (1) and HL(1) had strong antiproliferative activities against human breast cancer cells (MCF-7) lines and human colorectal cancer cells (COLO205) lines in vitro. The antiproliferative activities of complex (1) against MCF-7 lines (IC50=16.9±1.5 μmol L(-1)) and against COLO205 lines (IC50=16.5±3.4 μmol L(-1)) is much stronger than that of HL(1), which had the potential to develop anti-cancer drug.
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Affiliation(s)
- Wen-Ji Song
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, Zhejiang 321004, PR China; College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Jian-Ping Cheng
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Dong-Hua Jiang
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Li Guo
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Meng-Fei Cai
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Hu-Bin Yang
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Qiu-Yue Lin
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, Zhejiang 321004, PR China; College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China.
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