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Shahabadi N, Ghaffari L, Mardani Z, Shiri F. Multi‐Spectroscopic and Theoretical Analyses of Human Serum Albumin Binding to a Water‐Soluble Zinc(II) Complex including β‐Amino Alcohol. ChemistrySelect 2022. [DOI: 10.1002/slct.202200645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nahid Shahabadi
- Department of Inorganic Chemistry Faculty of Chemistry Razi University Kermanshah Iran
| | - Lida Ghaffari
- Department of Inorganic Chemistry Faculty of Chemistry Razi University Kermanshah Iran
| | - Zahra Mardani
- Department of Inorganic Chemistry Faculty of Chemistry Urmia University Urmia Iran
| | - Farshad Shiri
- Department of Inorganic Chemistry Faculty of Chemistry Razi University Kermanshah Iran
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Mohammadlou F, Mansouri-Torshizi H, Dehghanian E, Abdi K. Synthesis, Characterization, Cytotoxicity and DNA/BSA Interaction of Pd(II) Complexes with Alkyl-Amine and 1,10-Phenanthroline. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2124283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Farahnaz Mohammadlou
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
| | - Hassan Mansouri-Torshizi
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
| | - Effat Dehghanian
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
| | - Khatereh Abdi
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
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Pursuwani BH, Bhatt BS, Vaidya FU, Pathak C, Patel MN. Synthesis, Characterization, and Biological Evaluation of Osmium(IV) Pyrazole Carbothioamide Complexes. Polycycl Aromat Compd 2020. [DOI: 10.1080/10406638.2020.1852581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Bharat H. Pursuwani
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Bhupesh S. Bhatt
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Foram U. Vaidya
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Chandramani Pathak
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Mohan N. Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
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Shiri F, Shahraki S, Frozandeh-Moghadam H. A mechanistic explanation of two novel Zn(II) dithiocarbamate complexes with β-lactoglobulin. J Biomol Struct Dyn 2020; 39:5117-5128. [PMID: 32705934 DOI: 10.1080/07391102.2020.1796790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The synthesis, characterization, antioxidant activity and β-LG interaction of two Zn(II) complexes formulated as [(N-N)Zn(µ-pr-dtc)Zn(N-N)](NO3)2] (where pr-dtc is propylenbisdithiocarbamate, N-N are 2,2'-bipyridine for complex a, and 1,10 phenanthroline for complex b) were reported. The in vitro antioxidant activity of the Zn complexes was evaluated against 1,1-diphenyl-2-picrylhydrazyl radicals (DPPH). Both complexes presented moderate antioxidant activity (IC50 = 231.0 ± 5.7 mg L-1 for complex a and 250.0 ± 6.1 mg L-1 for complex b). Fluorescence studies showed that the intrinsic fluorescence of β-LG was statically quenched by the prepared complexes mainly through Van der Waals interaction and hydrogen bond. The fluorescence results showed that the above complexes could bind with β-LG with a relatively strong affinity (complex a: Kb(27 °C) = 0.16 × 104 M-1, Kb(37 °C) = 0.06 × 104 M-1, complex b: Kb(27 °C) = 1.94 × 104 M-1, Kb(37 °C) = 0.11 × 104 M-1). The secondary structure of β-LG was changed in the presence of these Zn complexes and the decrease in α-helix (0.41% and 0.55% for complex a and complex b, respectively) and β-sheet (1.19% and 1.44% for complex a and complex b, respectively) contents confirmed the protein instability during the interaction. Molecular dynamics simulation was used during the preparation of the protein receptor before docking to find the best fit of the complexes to β-LG. Some details about molecular docking simulations describe Van der Waals interactions and hydrogen bonding, and this is in agreement with the thermodynamics data derived from fluorescence spectroscopy experiment.Communicated by Ramaswamy H. Sarma.
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Delavar Mendi F, Sh Saljooghi A, Ramezani M, Kruszynski R, Poupon M, Kucerakova M, Huch V, Socha P, Babaei M, Alibolandi M. Five new complexes with deferiprone and N,N-donor ligands: evaluation of cytotoxicity against breast cancer MCF-7 cell line and HSA-binding determination. J Biomol Struct Dyn 2020; 39:4845-4858. [PMID: 32579069 DOI: 10.1080/07391102.2020.1782769] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
In this study, five new complexes containing deferiprone (dfp) and N,N-donor ligands [bipyridine (bpy), 1,10-phenanthroline (phen) and ethylenediamine (en)] were synthesized: [Fe(dfp)2(bpy)](PF6) (1), [Fe(dfp)2(phen)](PF6) (2), [Cu2(dfp)2(bpy)2](PF6)2 (3), [Ga(dfp)2(bpy)](PF6) (4), and [Fe(dfp)2(en)](PF6) (5). Characterization of these complexes was carried out through elemental analysis and FT-IR, and single-crystal X-ray crystallography was used to determine their structures. Whilst the polyhedron has a distorted octahedral geometry in 1, 2, 4, and 5, it adopts a distorted square-pyramidal geometry in 3. Interaction of these compounds with human serum albumin (HSA) has been investigated through electronic absorption and fluorescence titration techniques. Emission quenching was performed separately for each complex at three different temperatures and thermodynamic parameters were calculated using binding constants to better understand the power of different binding forces with the HSA. Results demonstrated that compounds interact strongly with the HSA with a static quenching mechanism. Our evaluation of the cytotoxicity of complexes against the breast cancer MCF-7 cell line showed that complex 2 presents a better cytotoxicity than the standard cis-Pt. Finally, using the AutoDock 4.2 program, simulations to analyze the mechanism of complex-HSA interactions and their binding mode were carried out. Results showed that the best binding mode is located in subdomain IB for 1, 2, and 4, in I/II for 3, and in IA/IIA for 5. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Fatemeh Delavar Mendi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Amir Sh Saljooghi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Rafal Kruszynski
- Department of X-ray Crystallography and Crystal Chemistry, Institute of General and Ecological Chemistry, Lodz University of Technology, Lodz, Poland
| | - Morgane Poupon
- Institute of Physics of the Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Monika Kucerakova
- Institute of Physics of the Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Volker Huch
- Faculty of Natural Sciences and Technology, Department of Chemistry, Saarland University, Saarbrücken, Germany
| | - Pawel Socha
- The Czochralski Laboratory of Advanced Crystal Engineering, Faculty of Chemistry, University of Warsaw, Warsaw, Poland
| | - Maryam Babaei
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Wang X, Hui H, Yu A, Jiang Z, Yu H, Zou L, Teng Y. Characterization of binding interaction of triclosan and trypsin. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:13409-13416. [PMID: 32026370 DOI: 10.1007/s11356-020-07858-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
Triclosan (TCS), a broad-spectrum antibacterial agent, exhibits a high exposure in the environment. However, the residual TCS in the environment poses a potential risk to human health. In this study, spectroscopic methods, molecular docking and animal experiment were conducted to completely understand the interaction between trypsin and TCS. The formation of the TCS-trypsin complex was spontaneously achieved through hydrogen bonds and Van der Waals forces with a binding constant (Ka) between 103 and 104 L mol-1. In addition, the trypsin activity in fish intestine was inhibited by TCS exposure, revealing the potentially negative effects of TCS on metabolism. The results might be explained by changes in the conformation of the trypsin, inducing the content of unordered coil increasing significantly (from 36.2% to over 80%). This work provides useful information for assessing the toxicity of TCS at the molecular level.
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Affiliation(s)
- Xiaofang Wang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 1800# Lihu Avenue, Wuxi, 214122, China
| | - Hongjie Hui
- Key Laboratory of Industrial Biotechnology, School of Bioengineering, Jiangnan University, 1800# Lihu Avenue, Wuxi, 214122, China
| | - An Yu
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 1800# Lihu Avenue, Wuxi, 214122, China
| | - Ziyang Jiang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 1800# Lihu Avenue, Wuxi, 214122, China
| | - Hongyan Yu
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 1800# Lihu Avenue, Wuxi, 214122, China
| | - Luyi Zou
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 1800# Lihu Avenue, Wuxi, 214122, China
| | - Yue Teng
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 1800# Lihu Avenue, Wuxi, 214122, China.
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Shahraki S, Heydari A, Delarami HS, Oveisi Keikha A, Azizi Z, Fathollahi Zonouz A. Preparation, characterization and comparison of biological potency in two new Zn(II) and Pd(II) complexes of butanedione monoxime derivatives. J Biomol Struct Dyn 2019; 38:997-1011. [PMID: 30938659 DOI: 10.1080/07391102.2019.1591305] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A novel Schiff base ligand (2-iminothiophenol-2,3-butanedione monoxime, ITBM) and its complexes with Pd(II) and Zn(II) metal ions ([M(ITBM)2]Cl2) were synthesized and characterized in the present study. The formulated complexes were evaluated for in vitro antioxidant activity as radical scavengers against 1,1-diphenyl-2-picrylhydrazyl radicals (DPPH•). According to the results, antioxidant activity of Pd complex (IC50=36 mg L-1) was more effective than that of Zn(II) complex (IC50=72 mg L-1). Biophysical techniques along with computational modeling were employed to examine the binding of these complexes with human serum albumin (HSA) as the model protein. The trial findings revealed an interaction between Schiff base complexes and HSA with a modest binding affinity [Kb=6.31(±0.11)×104 M-1 for Zn(II) complex and 0.71(±0.05)×104 M-1 for Pd(II) complex at 310 K]. An intense fluorescence quenching of protein through a static quenching mechanism was occurred due to the binding of both complexes to HSA. Hydrogen bonds and van der Waals forces in both examined systems were the main stabilizing forces in the development of drug-protein complex. Based on far-UV-CD observations, the content of α-helical structure in the protein was reduced through induction by both complexes. Analysis of protein-ligand docking demonstrated binding of the two Schiff base complexes to residues placed in the IIA subdomain of HSA. In addition, Zn complex with HSA showed a stronger binding ability than that of Pd complex.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Ali Heydari
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
| | | | | | - Zahra Azizi
- Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
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Shahraki S, Majd MH, Heydari A. Novel tetradentate Schiff base zinc(II) complex as a potential antioxidant and cancer chemotherapeutic agent: Insights from the photophysical and computational approach. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.10.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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New zinc(II) N4 tetradentate Schiff base complex: A potential cytotoxic metallodrug and simple precursor for the preparation of ZnO nanoparticles. Colloids Surf B Biointerfaces 2017; 160:564-571. [DOI: 10.1016/j.colsurfb.2017.10.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 10/04/2017] [Accepted: 10/07/2017] [Indexed: 11/19/2022]
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Shahraki S, Heydari A. Binding forces between a novel Schiff base palladium(II) complex and two carrier proteins: human serum albumi and β-lactoglobulin. J Biomol Struct Dyn 2017; 36:2807-2821. [PMID: 28812944 DOI: 10.1080/07391102.2017.1367723] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ligand binding studies on carrier proteins are crucial in determining the pharmacological properties of drug candidates. Here, a new palladium(II) complex was synthesized and characterized. The in vitro binding studies of this complex with two carrier proteins, human serum albumin (HSA), and β-lactoglobulin (βLG) were investigated by employing biophysical techniques as well as computational modeling. The experimental results showed that the Pd(II) complex interacted with two carrier proteins with moderate binding affinity (Kb ≈ .5 × 104 M-1 for HSA and .2 × 103 M-1 for βLG). Binding of Pd(II) complex to HSA and βLG caused strong fluorescence quenching of both proteins through static quenching mechanism. In two studied systems hydrogen bonds and van der Waals forces were the major stabilizing forces in the drug-protein complex formation. UV-Visible and FT-IR measurements indicated that the binding of above complex to HSA and βLG may induce conformational and micro-environmental changes of two proteins. Protein-ligand docking analysis confirmed that the Pd(II) complex binds to residues located in the subdomain IIA of HSA and site A of βLG. All these experimental and computational results suggest that βLG and HSA might act as carrier protein for Pd(II) complex to deliver it to the target molecules.
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Key Words
- Ala, Alanine
- Cys, Cysteine
- DFT, Density Functional Theory
- DMSO, Dimethyl sulfoxide
- HOMO, highest occupied molecular orbital
- HSA, Human Serum Albumin
- LUMO, lowest unoccupied molecular orbital
- Leu, Leucine
- Lys, Lysine
- NMR, Nuclear Magnetic Resonance
- Pd(II) complex
- Pro, Proline
- Schiff base
- TMS, Tetramethylsilane
- Trp, Tryptophan
- Tyr, Tyrosine
- Val, Valine
- human serum albumin
- protein interactions
- β-lactoglobulin
- βLG, β-lactoglobulin
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Affiliation(s)
- Somaye Shahraki
- a Department of Chemistry , University of Zabol , Zabol , Iran
| | - Ali Heydari
- b Department of Chemistry , University of Sistan and Baluchestan , Zahedan , Iran
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Shahraki S, Shiri F, Beyzaei H, Khosravi F. Synthesis, characterization, protein interaction and antibacterial activity of a lanthanum(iii) complex [La(Trp)3(OH2)2] (Trp = tryptophan) as a new precursor for synthesis of La2O2CO3 nanoparticles. NEW J CHEM 2017. [DOI: 10.1039/c7nj00692f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present study, a lanthanum(iii) complex containing tryptophan amino acid was synthesized and characterized.
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Affiliation(s)
- Somaye Shahraki
- Department of Chemistry
- Faculty of Science
- University Of Zabol
- Zabol
- Iran
| | - Fereshteh Shiri
- Department of Chemistry
- Faculty of Science
- University Of Zabol
- Zabol
- Iran
| | - Hamid Beyzaei
- Department of Chemistry
- Faculty of Science
- University Of Zabol
- Zabol
- Iran
| | - Fatemeh Khosravi
- Department of Chemistry
- Faculty of Science
- University Of Zabol
- Zabol
- Iran
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