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Hussain S, Hussain S, Zafar MN, Hussain I, Khan F, Mughal EU, Tahir MN. Preliminary anticancer evaluation of new Pd(II) complexes bearing NNO donor ligands. Saudi Pharm J 2024; 32:101915. [PMID: 38178853 PMCID: PMC10764271 DOI: 10.1016/j.jsps.2023.101915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 12/09/2023] [Indexed: 01/06/2024] Open
Abstract
In this study we presented a novel series of NNO tridentate ligands generating imino, amido and oxo donor pocket for Pd(II) coordination. All the compounds were meticulously characterized by elemental analysis and advanced spectroscopic techniques, including FTIR, proton and carbon NMR. The synthesized compounds underwent rigorous evaluation for their potential as anti-cancer agents, utilizing the aggressive breast cancer cell lines MDA-MB (ATCC) and MCF-7 as a crucial model for assessing growth inhibition in cancer cells. Remarkably, the MTT assay unveiled the robust anti-cancer activity for all palladium complexes against MDA-MB-231 and MCF-7 cells. Particularly, complex [Pd(L1)(CH3CN)] exhibited exceptional potency with an IC50 value of 25.50 ± 0.30 µM (MDA-MB-231) and 20.76 ± 0.30 µM (MCF-7), compared to respective 27.00 ± 0.80 µM and 24.10 ± 0.80 µM for cisplatin, underscoring its promising therapeutic potential. Furthermore, to elucidate the mechanistic basis for the anti-cancer effects, molecular docking studies on tyrosine kinases, an integral target in cancer research, were carried out. The outcome of these investigations further substantiated the remarkable anticancer properties inherent to these innovative compounds. This research offers a compelling perspective on the development of potent anti-cancer agents rooted in the synergy between ligands and Pd(II) complexes and presenting a promising avenue for future cancer therapy endeavors.
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Affiliation(s)
- Shazia Hussain
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Shabeeb Hussain
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - M. Naveed Zafar
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Irfan Hussain
- Center of Regenerative Medicine and Stem Cell Research, Aga Khan 74800, University Karachi, Pakistan
| | - Faizullah Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa 616, Sultanate of Oman and Department of Pharmacy, Abdul Wali Khan University Mardan, Mardan 23200, Khyber Pakhtunkhwa, Pakistan
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Meng F, Song C, Liu J, Chen F, Zhu Y, Fang X, Cao Q, Ma D, Wang Y, Zhang C. Chlorogenic Acid Modulates Autophagy by Inhibiting the Activity of ALKBH5 Demethylase, Thereby Ameliorating Hepatic Steatosis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:15073-15086. [PMID: 37805933 DOI: 10.1021/acs.jafc.3c03710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Chlorogenic acid (CGA) is a naturally occurring plant component with the purpose of alleviating hepatic lipid deposition biological activities. However, the molecular mechanism behind this ability of CGA remains unelucidated. Consequently, we investigated the effect of CGA on hepatic lipid accumulation and elucidated its underlying mechanism. Our study used a high-fat diet (HFD)-induced mouse nonalcoholic fatty liver disease (NAFLD) model in mice to investigate the impact of CGA on hepatic lipid accumulation. The results revealed that the oral administration of CGA can ameliorate HFD-induced hepatic lipid deposition, reduce the NAFLD activity score (NAS), enhance liver autophagy, mitigate liver cell structural damage, and inhibit the MAPK/ERK signaling pathway. Meanwhile, CGA treatment increased the LC3B:LC3B ratio and decreased P62 expression. Cell experiments demonstrated that autophagy contributes to the ability of CGA to alleviate lipid deposition. Further analysis revealed that CGA specifically binds to ALKBH5 and inhibits its m6A methylase activity. The inhibition of ALKBH5 activity significantly reduces AXL mRNA stability in liver cells. The AXL downregulation resulted in suppressing ERK signaling pathway activation. Overall, this study demonstrates that CGA can alleviate hepatic steatosis by regulating autophagy through the inhibition of ALKBH5 activity inhibition.
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Affiliation(s)
- Fantong Meng
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
| | - Chengchuang Song
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
| | - Jia Liu
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
| | - Fang Chen
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
| | - YuHua Zhu
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
- Laboratory Animal Center, Xuzhou Medical University, Xuzhou, Jiangsu Province 221004, China
| | - Xingtang Fang
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
| | - Qinghe Cao
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
- Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences, Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District, Xuzhou, Jiangsu Province 221004, China
| | - Daifu Ma
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
- Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences, Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District, Xuzhou, Jiangsu Province 221004, China
| | - Yanhong Wang
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
| | - Chunlei Zhang
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, Institute of Cellular and Molecular Biology, College of Life Science, Jiangsu Normal University, Xuzhou Jiangsu Province, 221116, China
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Ramachandran TS, Gunasekaran S, Murugan Sreedevi S, Vinod SM, Rajendran K, Perumal T, Amer M. A, P.-S. G. Comparative studies on biophysical interactions between 4-dicyanomethylene-2,6-dimethyl-4H-pyran (DDP) with bovine serum albumin (BSA) and human serum albumin (HSA) via photophysical approaches and molecular docking techniques. JOURNAL OF SAUDI CHEMICAL SOCIETY 2021. [DOI: 10.1016/j.jscs.2021.101364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Vojtek M, Gonçalves-Monteiro S, Pinto E, Kalivodová S, Almeida A, Marques MPM, Batista de Carvalho ALM, Martins CB, Mota-Filipe H, Ferreira IMPLVO, Diniz C. Preclinical Pharmacokinetics and Biodistribution of Anticancer Dinuclear Palladium(II)-Spermine Complex (Pd 2Spm) in Mice. Pharmaceuticals (Basel) 2021; 14:ph14020173. [PMID: 33672377 PMCID: PMC7926495 DOI: 10.3390/ph14020173] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/13/2021] [Accepted: 02/17/2021] [Indexed: 02/07/2023] Open
Abstract
Palladium-based compounds are regarded as potential analogs to platinum anticancer drugs with improved properties. The present study assessed the pharmacokinetics and biodistribution of a dinuclear palladium(II)-spermine chelate (Pd2Spm), which has previously been shown to possess promising in vitro activity against several therapy-resistant cancers. Using inductively coupled plasma-mass spectrometry, the kinetic profiles of palladium/platinum in serum, serum ultrafiltrate and tissues (kidney, liver, brain, heart, lungs, ovaries, adipose tissue and mammary glands) were studied in healthy female Balb/c mice after a single intraperitoneal bolus injection of Pd2Spm (3 mg/kg bw) or cisplatin (3.5 mg/kg bw) between 0.5 and 48 h post-injection. Palladium in serum exhibited biphasic kinetics with a terminal half-life of 20.7 h, while the free palladium in serum ultrafiltrate showed a higher terminal half-life than platinum (35.5 versus 31.5 h). Palladium was distributed throughout most of the tissues except for the brain, with the highest values in the kidney, followed by the liver, lungs, ovaries, adipose tissue and mammary glands. The in vitro cellular accumulation was also evaluated in breast cancer cells, evidencing a passive diffusion as a mechanism of Pd2Spm’s cellular entry. This study reports, for the first time, the favorable pharmacokinetics and biodistribution of Pd2Spm, which may become a promising pharmacological agent for cancer treatment.
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Affiliation(s)
- Martin Vojtek
- LAQV/REQUIMTE, Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (S.G.-M.); (S.K.)
- Correspondence: (M.V.); (C.D.)
| | - Salomé Gonçalves-Monteiro
- LAQV/REQUIMTE, Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (S.G.-M.); (S.K.)
| | - Edgar Pinto
- LAQV/REQUIMTE, Laboratory of Bromatology and Hydrology, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (E.P.); (I.M.P.L.V.O.F.)
- Department of Environmental Health, School of Health, P.Porto, CISA/Research Center in Environment and Health, 4200-072 Porto, Portugal
| | - Sára Kalivodová
- LAQV/REQUIMTE, Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (S.G.-M.); (S.K.)
| | - Agostinho Almeida
- LAQV/REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal;
| | - Maria P. M. Marques
- “Molecular Physical-Chemistry” R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; (M.P.M.M.); (A.L.M.B.d.C.); (C.B.M.)
- Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| | - Ana L. M. Batista de Carvalho
- “Molecular Physical-Chemistry” R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; (M.P.M.M.); (A.L.M.B.d.C.); (C.B.M.)
| | - Clara B. Martins
- “Molecular Physical-Chemistry” R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; (M.P.M.M.); (A.L.M.B.d.C.); (C.B.M.)
| | - Helder Mota-Filipe
- iMed.ULisboa, Faculty of Pharmacy, University of Lisbon, 1649-003 Lisbon, Portugal;
| | - Isabel M. P. L. V. O. Ferreira
- LAQV/REQUIMTE, Laboratory of Bromatology and Hydrology, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (E.P.); (I.M.P.L.V.O.F.)
| | - Carmen Diniz
- LAQV/REQUIMTE, Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (S.G.-M.); (S.K.)
- Correspondence: (M.V.); (C.D.)
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Shabbir S, Muslim M, Muthu SA, Pissurlenkar RRS, Fatima S, Ali A, Ahmad A, Ahmad M, Ahmad B. The cocrystal of 3-((4-(3-isocyanobenzyl) piperazine-1-yl) methyl) benzonitrile with 5-hydroxy isophthalic acid prevents protofibril formation of serum albumin. J Biomol Struct Dyn 2020; 40:538-548. [PMID: 32876543 DOI: 10.1080/07391102.2020.1815585] [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 formation of amyloid-like fibrils is a central problem in biophysical chemistry and medicine. Fibril formation and their deposition in various tissues and organs are associated with many human diseases. Searching for molecules able to prevent the formation of fibrils is, therefore, necessary. In this work, we examined the potential of a cocrystal (SS3) of 3-((4-(3-isocyanobenzyl) piperazine-1-yl) methy) benzonitrile with 5-hydroxy isophthalic acid, to prevent fibrillation of human serum albumin. We found that the cocrystal strongly bound to human serum albumin (HSA) with association constant (Ka) of 5.8 ± 0.7 × 105 M-1. The SS3 binding was found to cause small alterations in both secondary and tertiary structure of the protein. Transmission electron microscopy showed that the cocrystal completely prevented the formation of worm-like protofibrils by HSA at SS3/HSA molar ratio of 1:1. The molecule was found to prevent the aggregation in a concentration dependent manner. It was also observed that most of protein in the presence of SS3 remained in soluble state and the secondary structure contained native-like α-helical structure. Therefore, we conclude that the cocrystal effectively prevented conversion of HSA into worm-like protofibril. These finding suggest that combination of molecules in the form of cocrystal or other stable combination could pave a way for the development of drugs against amyloidosis.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sadiya Shabbir
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Mohd Muslim
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Shivani A Muthu
- Protein Assembly Lab, JH-Institute of Molecular Medicine, Jamia Hamdard, New Delhi, India
| | - Raghuvir R S Pissurlenkar
- (Bio) Molecular Simulations Group, Department of Pharmaceutical Chemistry, Goa College of Pharmacy, Panaji Goa, India
| | - Shaista Fatima
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Arif Ali
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Aiman Ahmad
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Musheer Ahmad
- Department of Applied Chemistry, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Basir Ahmad
- Protein Assembly Lab, JH-Institute of Molecular Medicine, Jamia Hamdard, New Delhi, India
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Sharma LG, Pandey LM. Shear-induced aggregation of amyloid β (1-40) in a parallel plate geometry. J Biomol Struct Dyn 2020; 39:6415-6423. [PMID: 32715933 DOI: 10.1080/07391102.2020.1798814] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Protein aggregation is induced by various environmental or external factors and associated with various neurodegenerative diseases. Among various external factors, shear stress is inevitable for both in vivo and in vitro applications of proteins. In this study, Aβ (1-40) peptide, a derivative of the amyloid precursor protein, was subjected to constant (300, 500, 700 s-1) and varying (ramp) shear in a parallel plate geometry to explore the implications of shear in terms of macro (viscosity) and micro (secondary structure, morphology) characteristics. Aβ (1-40) solution followed a shear thickening flow behaviour with performance index value 'n' of 2.12. The fibrillation process resulting from the shear force was evaluated in terms of dissipation energy, which was found to exceed the free energy of unfolding. This resulted in the formation of β-sheet rich structures, which were confirmed by CD and FTIR analyses and enhanced Th-T fluorescence. The apparent rate of aggregation (k) was found to increase with the shear rate, and inversely related to the solution viscosity. The maximum k value was 0.21 ± 0.3 min-1 at 700 s-1. The molecular weights of aggregates were determined using gel filtration, which were proportionally related to the solution viscosity. The average molecular weights were estimated to be 70, 62 and 52 KDa for samples sheared at 300, 500 and 700 s-1, respectively. The present study has deciphered the interplay of viscosity, a fluid property, with the aggregation process and its corresponding change in the secondary structures of the peptide. These findings provide useful insights for understanding various proteopathies under shear force.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Laipubam Gayatri Sharma
- Bio-Interface and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam
| | - Lalit M Pandey
- Bio-Interface and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam
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Al-Harthi S, Lachowicz JI, Nowakowski ME, Jaremko M, Jaremko Ł. Towards the functional high-resolution coordination chemistry of blood plasma human serum albumin. J Inorg Biochem 2019; 198:110716. [PMID: 31153112 DOI: 10.1016/j.jinorgbio.2019.110716] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/07/2019] [Accepted: 05/13/2019] [Indexed: 12/11/2022]
Abstract
Human serum albumin (HSA) is a monomeric, globular, multi-carrier and the most abundant protein in the blood. HSA displays multiple ligand binding sites with extraordinary binding capacity for a wide range of ions and molecules. For decades, HSA's ability to bind to various ligands has led many scientists to study its physiological properties and protein structure; indeed, a better understanding of HSA-ligand interactions in human blood, at the atomic level, will likely foster the development of more potent, and overall more performant, diagnostic and therapeutic tools against serious human disorders such as diabetes, cardiovascular disorders, and cancer. Here, we present a concise overview of the current knowledge of HSA's structural characteristics, and its coordination chemistry with transition metal ions, within the scope and limitations of current techniques and biophysical methods to reach atomic resolution in solution and in blood serum. We also highlight the overwhelming need of a detailed atomistic understanding of HSA dynamic structures and interactions that are transient, weak, multi-site and multi-step, and allosterically affected by each other. Considering the fact that HSA is a current clinical tool for drug delivery systems and a potential contender as molecular cargo and nano-vehicle used in biophysical, clinical and industrial fields, we underline the emerging need for novel approaches to target the dynamic functional coordination chemistry of the human blood serum albumin in solution, at the atomic level.
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Affiliation(s)
- Samah Al-Harthi
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division (BESE), 23955-6900 Thuwal, Saudi Arabia
| | - Joanna Izabela Lachowicz
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato, Cagliari, Italy
| | - Michal Eligiusz Nowakowski
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division (BESE), 23955-6900 Thuwal, Saudi Arabia; Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Mariusz Jaremko
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division (BESE), 23955-6900 Thuwal, Saudi Arabia
| | - Łukasz Jaremko
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division (BESE), 23955-6900 Thuwal, Saudi Arabia.
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Shabana AA, Butler IS, Castonguay A, Mostafa M, Jean-Claude BJ, Mostafa SI. DNA interaction and anticancer evaluation of new palladium(II), platinum(II) and silver(I) complexes based on (Δ)- and (Λ)-1,2–bis-(1H-benzimidazol-2-yl)-1,2-ethanediol enantiomers. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Multiple Spectroscopic, Docking and Cytotoxic Study of a Synthesized 2,2' Bipyridin Phenyl Isopentylglycin Pt(II) Nitrate Complex: Human Serum Albumin and Breast Cancer Cell Line of MDA-MB231 as Targets. J Fluoresc 2018; 28:551-559. [PMID: 29476398 DOI: 10.1007/s10895-018-2216-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 01/22/2018] [Indexed: 10/18/2022]
Abstract
In the present study, the biological activities of a new synthesized Pt(II)-complex, 2,2' bipyridinphenyl isopentylglycin Pt(II) nitrate was investigated via its interaction with the most important blood carrier protein of human serum albumin (HSA), using fluorescence and Far-UV circular dichroism (CD) spectroscopic techniques and also molecular docking. Moreover, cytotoxicity activity of the complex was studied against breast cancer cell line of MDA MB231 using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The Pt(II)-complex has a strong ability to quench the intrinsic fluorescence of HSA through a static quenching mechanism. According fluorescence quenching data, the binding parameters of the interaction were calculated and showed that hydrophobic interaction has an important role. The molecular docking results in coherent with fluorescence measurements illustrated that Pt(II) complex can bind to HSA at one position that located in the hydrophobic cavity of groove between drug site I and II. Also, experimental data on driving force in binding site was confirmed whereas theoretical results demonstrated Pt(II) complexinteract to HSA by hydrophobic interaction. Far-UV-CD results showed that Pt(II)-complex induced an increasing in the content of α-helical structure of the protein and stabilized it. Also, MTT assay represented growth inhibitory effect of the complex toward the breast cancer cell line.
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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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Shehata MR, Shoukry MM, Ragab MS, van Eldik R. Synthesis, Characterization, Speciation, DNA Cleavage, and Cytotoxic Studies of the Pd[2‐(2‐Aminoethyl)‐1‐methylpyrrolidine]Cl
2
Complex with Reference to Carboplatin. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601524] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Mohamed M. Shoukry
- Department of Chemistry Faculty of Science Cairo University Giza Egypt
- Department of Chemistry Faculty of Science Islamic University Al‐Madinah Saudi Arabia
| | - Mona S. Ragab
- Department of Chemistry Faculty of Science Cairo University Giza Egypt
| | - Rudi van Eldik
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg 91058 Erlangen Germany
- Faculty of Chemistry Jagiellonian University 30‐060 Krakow Poland
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Aminzadeh M, Mansouri-Torshizi H, Modarresi-Alam AR. 2,2'- bipyridine coplanar with coordination square of Pd(II) nonyldithiocarbamato antitumor complex interacting with DNA in two distinct steps. J Biomol Struct Dyn 2016; 35:2301-2313. [PMID: 27564006 DOI: 10.1080/07391102.2016.1220328] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Cisplatin is one of the most effective chemotherapy drugs, and has been widely employed for more than four decades in the treatment of different forms of human tumors. In recent years, various examples of metal complex-based compounds have been used for medicinal purposes. In this context, the novel palladium(II) complex, [Pd(non-dtc)(bpy)]NO3, (non-dtc = nonyldithiocarbamate and bpy = 2,2'- bipyridine) has been synthesized and characterized by means of elemental analysis, conductivity measurements, FT-IR, 1H NMR, 13C NMR, and electronic spectroscopy studies. The 50% cytotoxic concentrations (Ic50) of this Pd(II) complex (0.53 mM) and cisplatin (154 mM) against human cell tumor line (K562) indicates its interaction with DNA of cancer cell at quite low concentration. Thus, binding characteristics of this compound to calf thymus DNA (CT-DNA) has been investigated by UV-vis absorption spectroscopy and fluorescence spectra. The exciting observation of this work in the UV-visible studies was that the Pd(II) complex exhibit two or more types of interaction with CT-DNA. Such properties have rarely been observed in the literature. This complex cooperatively binds with DNA and denatures it too. Fluorescence studies proved the intercalation mode of binding and the other modes seems to be hydrophobic and electrostatic interactions. Binding parameters and thermodynamics of the interaction with CT-DNA are also described. Finally, multifunctional interactions of [Pd(non-dtc)(bpy)]NO3 make it suitable to interact with DNA of cancer cell at quite low concentration and if it is used as anticancer agent, very low doses will be needed which may have fewer side effects.
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Affiliation(s)
- Mohammad Aminzadeh
- a Faculty of Science, Department of Chemistry , University of Sistan and Baluchestan , Zahedan , Iran
| | - Hassan Mansouri-Torshizi
- a Faculty of Science, Department of Chemistry , University of Sistan and Baluchestan , Zahedan , Iran
| | - Ali Reza Modarresi-Alam
- a Faculty of Science, Department of Chemistry , University of Sistan and Baluchestan , Zahedan , Iran
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Rodríguez Arce E, Mosquillo MF, Pérez-Díaz L, Echeverría GA, Piro OE, Merlino A, Coitiño EL, Maríngolo Ribeiro C, Leite CQF, Pavan FR, Otero L, Gambino D. Aromatic amine N-oxide organometallic compounds: searching for prospective agents against infectious diseases. Dalton Trans 2016. [PMID: 26203896 DOI: 10.1039/c5dt00557d] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In search of prospective agents against infectious diseases, 1,1'-bis(diphenylphosphino)ferrocene pyridine-2-thiolato-1-oxide M(ii) hexafluorophosphate compounds [M(mpo)(dppf)](PF6), where M = palladium or platinum, were synthesized and fully characterized in the solid state and in solution using experimental and DFT computational techniques. The compounds are isomorphous and the M(ii) transition metal ions are in a nearly planar trapezoidal cis-coordination bound to the pyridine-2-thiolato-1-oxide (mpo) and to the 1,1'-bis(diphenylphosphino)ferrocene molecules, both acting as bidentate ligands. Both compounds showed high cytotoxic activity on Trypanosoma cruzi and Mycobacterium tuberculosis (MTB) and acceptable selectivities towards MTB, but good to excellent selectivity index values as anti-T. cruzi compounds. The inclusion of the ferrocene moiety (dppf ligand) improved the selectivity towards the parasite when compared to the previously reported [M(mpo)2] complexes. Related to the probable mechanism of action of the complexes, molecular docking studies on modelled T. cruzi NADH-fumarate reductase (TcFR) predicted that both be very good inhibitors of the enzyme. The effect of the compounds on the enzyme activity was experimentally confirmed using T. cruzi protein extracts. According to all obtained results, both [M(mpo)(dppf)](PF6) compounds could be considered prospective anti-trypanosomal agents that deserve further research.
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Affiliation(s)
- Esteban Rodríguez Arce
- Cátedra de Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de la República, Gral. Flores 2124, 11800 Montevideo, Uruguay.
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14
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Palladium complexes: new candidates for anti-cancer drugs. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-015-0804-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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15
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Ajloo D, Mahmoodabadi N, Ghadamgahi M, Saboury AA. Spectroscopy and computational studies on the interaction of octyl, dodecyl, and hexadecyl derivatives of anionic and cationic surfactants with adenosine deaminase. J Biomol Struct Dyn 2015; 34:1495-511. [DOI: 10.1080/07391102.2015.1081571] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Davood Ajloo
- School of Chemistry, Damghan University, Damghan 367164167, Iran
- Institute of Biological Science, Damghan University, Damghan 367164167, Iran
| | | | | | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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16
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Biological Evaluation of a New Synthesized Pt(II) Complex by Cytotoxic and Spectroscopic Studies. Cell Biochem Biophys 2014; 71:1415-24. [DOI: 10.1007/s12013-014-0364-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Guizado TRC. Analysis of the structure and dynamics of human serum albumin. J Mol Model 2014; 20:2450. [PMID: 25241161 DOI: 10.1007/s00894-014-2450-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 08/26/2014] [Indexed: 01/25/2023]
Abstract
Human serum albumin (HSA) is a biologically relevant protein that binds a variety of drugs and other small molecules. No less than 50 structures are deposited in the RCSB Protein Data Bank (PDB). Based on these structures, we first performed a clustering analysis. Despite the diversity of ligands, only two well defined conformations are detected, with a deviation of 0.46 nm between the average structures of the two clusters, while deviations within each cluster are smaller than 0.08 nm. Those two conformations are representative of the apoprotein and the HSA-myristate complex already identified in previous literature. Considering the structures within each cluster as a representative sample of the dynamical states of the corresponding conformation, we scrutinize the structural and dynamical differences between both conformations. Analysis of the fluctuations within each cluster set reveals that domain II is the most rigid one and better matches both structures. Then, taking this domain as reference, we show that the structural difference between both conformations can be expressed in terms of twist and hinge motions of domains I and III, respectively. We also characterize the dynamical difference between conformations by computing correlations and principal components for each set of dynamical states. The two conformations display different collective motions. The results are compared with those obtained from the trajectories of short molecular dynamics simulations, giving consistent outcomes. Let us remark that, beyond the relevance of the results for the structural and dynamical characterization of HAS conformations, the present methodology could be extended to other proteins in the PDB archive.
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Affiliation(s)
- T R Cuya Guizado
- Physics Department, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro, Brazil,
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18
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López-Cebral R, Romero-Caamaño V, Seijo B, Alvarez-Lorenzo C, Martín-Pastor M, Concheiro Á, Landin M, Sanchez A. Spermidine Cross-Linked Hydrogels as a Controlled Release Biomimetic Approach for Cloxacillin. Mol Pharm 2014; 11:2358-71. [DOI: 10.1021/mp500067z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Rita López-Cebral
- Department
of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
| | - Vanessa Romero-Caamaño
- Department
of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
| | - Begoña Seijo
- Department
of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
- Molecular
Image Group, University of Santiago de Compostela Clinical Hospital, Travesía
da Choupana, 15706 Santiago de Compostela, Spain
| | - Carmen Alvarez-Lorenzo
- Department
of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
| | - Manuel Martín-Pastor
- Nuclear
Magnetic Resonance Unit, University of Santiago de Compostela, Campus
Vida, 15706 Santiago
de Compostela, Spain
| | - Ángel Concheiro
- Department
of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
| | - Mariana Landin
- Department
of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
| | - Alejandro Sanchez
- Department
of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
- Molecular
Image Group, University of Santiago de Compostela Clinical Hospital, Travesía
da Choupana, 15706 Santiago de Compostela, Spain
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19
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Application of NMR spectroscopy in the development of a biomimetic approach for hydrophobic drug association with physical hydrogels. Colloids Surf B Biointerfaces 2014; 115:391-9. [DOI: 10.1016/j.colsurfb.2013.12.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 12/11/2013] [Accepted: 12/14/2013] [Indexed: 11/20/2022]
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20
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Merlino A, Vieites M, Gambino D, Coitiño EL. Homology modeling of T. cruzi and L. major NADH-dependent fumarate reductases: ligand docking, molecular dynamics validation, and insights on their binding modes. J Mol Graph Model 2013; 48:47-59. [PMID: 24370672 DOI: 10.1016/j.jmgm.2013.12.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 11/16/2013] [Accepted: 12/03/2013] [Indexed: 11/26/2022]
Abstract
Leishmania major and Trypanosoma cruzi are the main causes of leishmaniasis and Chagas disease, two endemic parasitosis identified as neglected diseases by the World Health Organization. Fumarate reductase (FR) is a central enzyme in the conversion of fumarate to succinate, an energy releasing path essential for the survival of these protozoans which is also absent in their mammalian hosts. FR can thus be considered as a good candidate for targeting specific inhibition by new drugs designed against L. major and T. cruzi. The lack of tertiary structures available for LmFR and TcFR has limited until now the possibility of performing structure-based drug design. Here we used homology modeling combined with enzyme-cofactor docking to propose tertiary structures for NADH-dependent LmFR and TcFR using an homologous X-ray crystallographic structure of flavine-adenine dinucleotide (FAD) dependent FR from Shewanella frigidimarina (PDB ID: 1QO8) as template. These models were refined and stabilized with/without substrate in the active site using classical molecular dynamics simulations under quasi-physiological conditions. Structural features relevant for understanding the mechanism of action of the enzyme were also analyzed, with special attention to the hydrogen bond network involving the cofactor and water molecules present at the binding sites. A small set of compounds previously synthesized and assayed for their inhibitory capacity against TcFR ([M(mpo)₂] metal complexes with M=Pt(II), Pd(II) and V(IV)O and mpo=2-mercaptopyridine N-oxide) and LmFR (licochalcone A) were screened by protein-ligand docking using the NADH-LmFR and NADH-TcFR models here proposed and validated, gaining insight into their binding modes in each enzyme.
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Affiliation(s)
- Alicia Merlino
- Laboratorio de Química Teórica y Computacional, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay.
| | - Marisol Vieites
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, C. C. 1157, 11800 Montevideo, Uruguay
| | - Dinorah Gambino
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, C. C. 1157, 11800 Montevideo, Uruguay
| | - E Laura Coitiño
- Laboratorio de Química Teórica y Computacional, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay.
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21
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Cytotoxic and spectroscopic studies on binding of a new synthesized bipyridine ethyl dithiocarbamate Pt(II) nitrate complex to the milk carrier protein of BLG. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0232-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Characterization and side effect analysis of a newly designed nanoemulsion targeting human serum albumin for drug delivery. Colloids Surf B Biointerfaces 2012; 98:80-4. [DOI: 10.1016/j.colsurfb.2012.04.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Revised: 04/19/2012] [Accepted: 04/23/2012] [Indexed: 11/21/2022]
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