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Mariño-Ocampo N, Rodríguez DF, Guerra Díaz D, Zúñiga-Núñez D, Duarte Y, Fuentealba D, Zacconi FC. Direct Oral FXa Inhibitors Binding to Human Serum Albumin: Spectroscopic, Calorimetric, and Computational Studies. Int J Mol Sci 2023; 24:ijms24054900. [PMID: 36902328 PMCID: PMC10002493 DOI: 10.3390/ijms24054900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/26/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023] Open
Abstract
Direct FXa inhibitors are an important class of bioactive molecules (rivaroxaban, apixaban, edoxaban, and betrixaban) applied for thromboprophylaxis in diverse cardiovascular pathologies. The interaction of active compounds with human serum albumin (HSA), the most abundant protein in blood plasma, is a key research area and provides crucial information about drugs' pharmacokinetics and pharmacodynamic properties. This research focuses on the study of the interactions between HSA and four commercially available direct oral FXa inhibitors, applying methodologies including steady-state and time-resolved fluorescence, isothermal titration calorimetry (ITC), and molecular dynamics. The HSA complexation of FXa inhibitors was found to occur via static quenching, and the complex formation in the ground states affects the fluorescence of HSA, with a moderate binding constant of 104 M-1. However, the ITC studies reported significantly different binding constants (103 M-1) compared with the results obtained through spectrophotometric methods. The suspected binding mode is supported by molecular dynamics simulations, where the predominant interactions were hydrogen bonds and hydrophobic interactions (mainly π-π stacking interactions between the phenyl ring of FXa inhibitors and the indole moiety of Trp214). Finally, the possible implications of the obtained results regarding pathologies such as hypoalbuminemia are briefly discussed.
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Affiliation(s)
- Nory Mariño-Ocampo
- Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Diego F. Rodríguez
- Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Daniel Guerra Díaz
- Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Daniel Zúñiga-Núñez
- Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Yorley Duarte
- Center for Bioinformatics and Integrative Biology, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370035, Chile
| | - Denis Fuentealba
- Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
- Correspondence: (D.F.); (F.C.Z.)
| | - Flavia C. Zacconi
- Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
- Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
- Centro de Investigaciones en Nanotecnología y Materiales Avanzados, CIEN-UC, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
- Center for Nanomedicine, Diagnostic & Drug Development (ND3), Universidad de Talca, Talca 3460000, Chile
- Correspondence: (D.F.); (F.C.Z.)
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2
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Shao Y, Zhao XX, Guo M, Zheng YL, Wu RH, Pan LY. Delivery Mechanism of the Pharmaceutical Complex of Genistein-Adenine Based on Spectroscopic and Molecular Modelling at Atomic Scale. Chem Biodivers 2021; 18:e2000944. [PMID: 33411381 DOI: 10.1002/cbdv.202000944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 01/04/2021] [Indexed: 11/07/2022]
Abstract
Genistein (GS) exhibits various biological activities, but its clinical application is limited because of the low bioavailability. In this study, a GS-adenine pharmaceutical complex was prepared through solvent evaporation to improve the bioavailability of GS, and a molecular model of a two-component supramolecular pharmacological transport mechanism was established. The structure of GS-adenine was characterized, in addition, interaction patterns between GS and adenine were investigated using density functional theory. The results showed that the solubility of GS-adenine was five times higher than that of GS, and the cumulative release rate of GS-adenine was 86 %. The results of fluorescence spectroscopy and molecular dynamic simulations showed that GS-adenine bound to the Sudlow's site I of HSA mainly through hydrophobic interactions. This study provides a useful reference for synthesizing pharmaceutical complexes to improve solubility and for exploring the mechanism of multiple pharmaceutical components in vivo.
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Affiliation(s)
- Yan Shao
- College of Engineering, Zhejiang A&F University, Hangzhou, 311300, P. R. China
| | - Xiao-Xue Zhao
- College of Engineering, Zhejiang A&F University, Hangzhou, 311300, P. R. China
- College of Sciences, Zhejiang A&F University, Hangzhou, 311300, P. R. China
- National Engineering and Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, 311300, P. R. China
| | - Ming Guo
- College of Engineering, Zhejiang A&F University, Hangzhou, 311300, P. R. China
- College of Sciences, Zhejiang A&F University, Hangzhou, 311300, P. R. China
- National Engineering and Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, 311300, P. R. China
| | - Yi-Lu Zheng
- College of Engineering, Zhejiang A&F University, Hangzhou, 311300, P. R. China
| | - Rong-Hui Wu
- College of Sciences, Zhejiang A&F University, Hangzhou, 311300, P. R. China
| | - Lan-Ying Pan
- College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, 311300, P. R. China
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3
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Raza M, Jiang Y, Ahmad B, Rahman AU, Raza S, Khan A, Tahir K, Hassan S, Khan S, Yuan Q. Biophysical investigation of interactions between sorbic acid and human serum albumin through spectroscopic and computational approaches. NEW J CHEM 2021. [DOI: 10.1039/d0nj06276f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This work provides an effective strategy to analyze the SA-induced microenvironmental changes in the HSA macromolecule, and also highlights the medicinal importance of SA.
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Affiliation(s)
- Muslim Raza
- Institute of Synthetic Biology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen
- China
| | - Yang Jiang
- State Key Laboratory of Chemical Resource Engineering
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing
- P. R. China
| | - Bashir Ahmad
- Centre of Biotechnology and Microbiology
- University of Peshawar
- Peshawar
- Pakistan
| | - Ata ur Rahman
- Institute of chemical sciences
- University of Peshawar
- Peshawar 25120
- Pakistan
| | - Saleem Raza
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Ajmal Khan
- Natural and Medical Sciences Research Centre
- University of Nizwa
- Nizwa 616
- Sultanate of Oman
| | - Kamran Tahir
- Institute of Chemical Sciences
- Gomal University
- D. I. Khan
- Pakistan
| | - Said Hassan
- Centre of Biotechnology and Microbiology
- University of Peshawar
- Peshawar
- Pakistan
| | - Saifullah Khan
- Centre of Biotechnology and Microbiology
- University of Peshawar
- Peshawar
- Pakistan
| | - Qipeng Yuan
- State Key Laboratory of Chemical Resource Engineering
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing
- P. R. China
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4
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Gholami H, Divsalar A, Abbasalipourkabir R, Ziamajidi N, Saeidifar M. The simultaneous carrier ability of natural antioxidant of astaxanthin and chemotherapeutic drug of 5-fluorouracil by whey protein of β-lactoglobulin: spectroscopic and molecular docking study. J Biomol Struct Dyn 2020; 39:1004-1016. [DOI: 10.1080/07391102.2020.1733091] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hamid Gholami
- Department of Biochemistry, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Adeleh Divsalar
- Department of Cell & Molecular Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | | | - Nasrin Ziamajidi
- Department of Biochemistry, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Maryam Saeidifar
- Nanotechnology and Advanced Materials Department, Materials and Energy Research Center, Karaj, Iran
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5
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Ansari A, Ali A, Asif M. Steroidal thiazolidinone derivatives: Design, synthesis and their molecular interaction with human serum albumin. Steroids 2019; 148:99-113. [PMID: 31082411 DOI: 10.1016/j.steroids.2019.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/15/2019] [Accepted: 02/26/2019] [Indexed: 12/17/2022]
Abstract
A series of steroidal thiazolidinone derivatives have been synthesized through one-pot multicomponent reaction involving steroidal ketone, thiosemicarbazide/methyl-thiosemicarbazide and DMAD in presence of AlCl3 as a Lewis acid catalyst. Among all the synthesized steroidal thiazolidinone derivatives, compound 7-9 (ST 7-9) were investigated for their in vitro molecular interaction with human serum albumin. Intrinsic fluorescence spectroscopy, constant wavelength synchronous fluorescence spectroscopy, circular dichroism and UV-visible absorption techniques have been exploited to characterize the binding phenomena in phosphate buffer solution at pH 7.4. The experimental results indicated that ST 7-9 bind to HSA and the intrinsic fluorescence of HSA was quenched through static quenching mechanism. The binding parameters were calculated and the binding constants obtained were 1.44 × 105 M-1 for ST 7, 0.84 × 105 M-1 for ST 8 and 1.06 × 105 M-1 for ST 9. Circular dichroism analysis confirms that the presence of ST 7-9, altered the secondary structure of HSA due to partial unfolding of the polypeptide chain. Furthermore, hemolytic activity assay demonstrated that the synthesized steroidal thiazolidinone derivatives have good compatibility towards human red blood cells. Finally, molecular docking studies revealed that the steroidal thiazolidinones can bind in the hydrophobic cavity of HSA, by hydrophobic and hydrogen bonding interaction. These results provided valuable information about the binding mechanism of ST 7-9 with HSA and play a pivotal role in the development of steroidal heterocycle inspired compounds.
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Affiliation(s)
- Anam Ansari
- Steroid Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India
| | - Abad Ali
- Steroid Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India; Organometallic Synthesis and Catalysis Group, Chemical Engineering Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra, India
| | - Mohd Asif
- Steroid Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India
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6
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Yang H, Zeng Q, He Z, Wu D, Li H. Determination of the DNA binding properties of a novel PARP inhibitor MK-4827 with calf-thymus DNA by molecular simulations and detailed spectroscopic investigations. NEW J CHEM 2019. [DOI: 10.1039/c9nj00667b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The binding interaction of niraparib (MK-4827), a poly(ADP-ribose) polymerase inhibitor, with calf thymus deoxyribonucleic acid (ctDNA) has been explored by various theoretical and experimental techniques.
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Affiliation(s)
- Hongqin Yang
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- Chengdu
- China
| | - Qingle Zeng
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- Chengdu
- China
| | - Ze He
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- Chengdu
- China
| | - Di Wu
- Key Laboratory of Meat Processing of Sichan
- College of Pharmacy and Biological Engineering
- Chengdu University
- Chengdu 610106
- China
| | - Hui Li
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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7
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Yang J, Chen Y, Liu Z, Yang L, Tang J, Miao M, Gan N, Li H. Differences between the binding modes of enantiomers S/R-nicotine to acetylcholinesterase. RSC Adv 2019; 9:1428-1440. [PMID: 35518031 PMCID: PMC9059617 DOI: 10.1039/c8ra09963d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 01/03/2019] [Indexed: 01/05/2023] Open
Abstract
Nicotine causes neurotoxic effects because it quickly penetrates the blood–brain barrier after entering the human body. Acetylcholinesterase (AChE) is a key enzyme in the central and peripheral nervous system associated with neurotoxicity. In this study, a spectroscopic method and computer simulation were applied to explore the mode of interaction between AChE and enantiomers of nicotine (S/R-nicotine). Fluorescence spectroscopy showed that the quenching mechanism of endogenous fluorescence of AChE by S/R-nicotine was static, as confirmed by the time-resolved steady-state fluorescence. The binding strength of both nicotine to AChE was weak (S-AChE: Ka = 80.06 L mol−1, R-AChE: Ka = 173.75 L mol−1). The main driving forces of S-AChE system interaction process were van der Waals force and hydrogen bonding, whereas that of R-AChE system was electrostatic force. Computer simulations showed that there were other important forces involved. S/R-Nicotine had a major binding site on AChE, and molecular docking showed that they bound mainly to the cavities enclosed by the active sites (ES, PAS, OH, AACS, and AP) in the protein. UV-vis spectroscopy and 3D spectroscopy indicated that nicotine significantly affected the microenvironment of Trp amino acids in AChE. The CD spectra indicated that S-nicotine increased the α-helical structure of AChE, but the overall conformation did not change significantly. By contrast, R-nicotine significantly changed the secondary structure of AChE. 5,5′-Dithiobis-2-nitrobenzoic acid (DTNB) method indicated that S and R nicotine produced different degrees of inhibition on the catalytic activity of AChE. Both experimental methods and computer simulations showed that R-nicotine had a significantly higher effect on AChE than S-nicotine. This research comprehensively and systematically analyzed the mode of interaction between nicotine and AChE for neurotoxicity assessment. Study on the binding modes of AChE to S/R-nicotine.![]()
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Affiliation(s)
- Ji Yang
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
- R&D Center of China Tobacco Yunnan Industrial Co., Ltd
| | - Yongkuan Chen
- R&D Center of China Tobacco Yunnan Industrial Co., Ltd
- Kunming
- China
| | - Zhihua Liu
- R&D Center of China Tobacco Yunnan Industrial Co., Ltd
- Kunming
- China
| | - Liu Yang
- R&D Center of China Tobacco Yunnan Industrial Co., Ltd
- Kunming
- China
| | - Jianguo Tang
- R&D Center of China Tobacco Yunnan Industrial Co., Ltd
- Kunming
- China
| | - Mingming Miao
- R&D Center of China Tobacco Yunnan Industrial Co., Ltd
- Kunming
- China
| | - Na Gan
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Hui Li
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
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8
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Gan N, Sun Q, Zhang M, Tang P, Zhao L, Xie T, Zhang Y, Li H. Insights into the interaction of ulipristal acetate and human serum albumin using multi-spectroscopic methods, molecular docking, and dynamic simulation. J Biomol Struct Dyn 2018; 37:2989-2998. [DOI: 10.1080/07391102.2018.1502686] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Na Gan
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Qiaomei Sun
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Man Zhang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Peixiao Tang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Ludan Zhao
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Tonghui Xie
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Yongkui Zhang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
| | - Hui Li
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China
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9
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Moghadam NH, Salehzadeh S, Tanzadehpanah H, Saidijam M, Karimi J, Khazalpour S. In vitro cytotoxicity and DNA/HSA interaction study of triamterene using molecular modelling and multi-spectroscopic methods. J Biomol Struct Dyn 2018; 37:2242-2253. [PMID: 30043689 DOI: 10.1080/07391102.2018.1489305] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The anticancer activity of triamterene on HCT116 and CT26 colon cancer cells lines was investigated. Furthermore, the mechanism of interaction between triamterene and calf thymus DNA (ct-DNA) and also human serum albumin (HSA) was conducted using spectroscopic and molecular docking techniques. In vitro cytotoxicity of triamterene against HCT116 and CT26 cells showed promising anticancer effects with IC50 values of 31.30 and 24.45 μM, respectively. Competitive studies of the triamterene with NR (neutral red) and MB (methylene blue) as intercalator probes showed that triamterene can be replaced by these probes. The viscosity data also confirmed that triamterene binds to calf-thymus DNA through intercalation binding mode. Binding properties of triamterene with HSA in the presence of warfarin and ibuprofen showed that triamterene competes with warfarin for the site I of human serum albumin (HSA). In addition, the binding modes of triamterene with DNA and HSA were verified by molecular docking technique. Abbreviations ct-DNA calf thymus DNA CV cyclic voltammetry DNA deoxyribonucleic acid DPV differential pulse voltammetry FBS fetal bovine serum HSA human serum albumin NR neutral red MB methylene blue MTT 3-(4,5-dimethylthiazol-2yl)-2,5-diphenyltetrazoliumbromide Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | | | - Hamid Tanzadehpanah
- b Research Center for Molecular Medicine , Hamadan University of Medical Sciences , Hamadan , Iran
| | - Massoud Saidijam
- b Research Center for Molecular Medicine , Hamadan University of Medical Sciences , Hamadan , Iran
| | - Jamshid Karimi
- c Department of Biochemistry , Hamadan University of Medical Sciences , Hamadan , Iran
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10
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Sun Q, Suo Z, Pu H, Tang P, Gan N, Gan R, Zhai Y, Ding X, Li H. Studies of the binding properties of the food preservative thiabendazole to DNA by computer simulations and NMR relaxation. RSC Adv 2018; 8:20295-20303. [PMID: 35541658 PMCID: PMC9080843 DOI: 10.1039/c8ra03702g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/24/2018] [Indexed: 11/22/2022] Open
Abstract
Thiabendazole (TBZ) is a commonly used food preservative and has a wide range of anthelmintic properties. In this study, computer simulations and experiments were conducted to investigate the interaction mechanism of TBZ and herring sperm DNA (hsDNA) at the molecular level. Molecular docking showed that TBZ interacted with DNA in groove mode and bound in A-T and C-G base pair regions. Molecular dynamics (MD) was used to evaluate the stability of the TBZ-DNA complex and found that the three phases in MD and the hydrogen bonds helped maintain the combination. NMR relaxation indicated that TBZ had a certain affinity to hsDNA with a binding constant of 462.43 L mol-1, and the thiazole ring was the main group bound with DNA. Results obtained from fluorescence experiments showed that the binding of TBZ and hsDNA was predominantly driven by enthalpy through a static quenching mechanism. Circular dichroism and viscosity measurements proved the groove binding mode. The FTIR results clarified the conformational changes of DNA, that the DNA helix became shorter and compact, and the DNA structure transformed from B-form to A-form.
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Affiliation(s)
- Qiaomei Sun
- School of Chemical Engineering, Sichuan University Chengdu 610065 China +86 028 85401207 +86 028 85405220
| | - Zili Suo
- School of Chemical Engineering, Sichuan University Chengdu 610065 China +86 028 85401207 +86 028 85405220
| | - Hongyu Pu
- School of Chemical Engineering, Sichuan University Chengdu 610065 China +86 028 85401207 +86 028 85405220
| | - Peixiao Tang
- School of Chemical Engineering, Sichuan University Chengdu 610065 China +86 028 85401207 +86 028 85405220
| | - Na Gan
- School of Chemical Engineering, Sichuan University Chengdu 610065 China +86 028 85401207 +86 028 85405220
| | - Ruixue Gan
- School of Chemical Engineering, Sichuan University Chengdu 610065 China +86 028 85401207 +86 028 85405220
| | - Yuanming Zhai
- Analytical & Testing Center, Sichuan University Chengdu 610065 China
| | - Xiaohui Ding
- School of Chemical Engineering, Sichuan University Chengdu 610065 China +86 028 85401207 +86 028 85405220
| | - Hui Li
- School of Chemical Engineering, Sichuan University Chengdu 610065 China +86 028 85401207 +86 028 85405220
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11
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Affiliation(s)
- Rafael Barbas
- Unitat de Polimorfisme i Calorimetria, Centres Científics i Tecnològics, Universitat de Barcelona, Baldiri Reixac 10, 08028 Barcelona, Spain
| | - Cristina Puigjaner
- Unitat de Polimorfisme i Calorimetria, Centres Científics i Tecnològics, Universitat de Barcelona, Baldiri Reixac 10, 08028 Barcelona, Spain
| | - Rafel Prohens
- Unitat de Polimorfisme i Calorimetria, Centres Científics i Tecnològics, Universitat de Barcelona, Baldiri Reixac 10, 08028 Barcelona, Spain
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12
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Xiao Y, Wang Q, Huang Y, Ma X, Xiong X, Li H. Synthesis, structure, and biological evaluation of a copper(ii) complex with fleroxacin and 1,10-phenanthroline. Dalton Trans 2018; 45:10928-35. [PMID: 27301999 DOI: 10.1039/c6dt00915h] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A novel mixed-ligand Cu(ii) complex combined with the quinolone drug fleroxacin and 1,10-phenanthroline was synthesized in this work. The crystal structure of the complex was characterized via X-ray crystallography, which was the first reported single crystal complex of fleroxacin. Results showed that Cu(ii) was coordinated through pyridone oxygen and one carboxylate oxygen atom of fleroxacin, as well as two nitrogen atoms from 1,10-phenanthroline. Various characterization methods, including Fourier transform infrared, elementary analysis, thermogravimetry, and X-ray powder diffraction, were applied. The Cu(ii)-quinolone complex exhibited favorable biological activities, and was proved to be capable of transforming supercoiled PUC19 DNA into nicked form under hydrolytic conditions. The obtained pseudo-Michaelis-Menten kinetic parameter was 12.64 h(-1), which corresponded to a million-fold rate enhancement in DNA cleavage. In addition, the interaction capacity of the complex with human serum albumin (HSA) was investigated. The results demonstrated a moderately intense combination between HSA and the complex. The complex evidently quenched the fluorescence of HSA. Approximately 19.2% of the quenching was attributed to Förster resonance energy transfer (FRET), whereas the rest was caused by ground-state complex formation (molar ratio of HSA : complex = 1 : 2). The energy of the complex was excited during FRET, which increased the fluorescence of the complex by approximately 18%.
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Affiliation(s)
- Ying Xiao
- College of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China.
| | - Qing Wang
- College of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China.
| | - Yanmei Huang
- College of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China.
| | - Xiangling Ma
- College of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China.
| | - Xinnuo Xiong
- College of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China.
| | - Hui Li
- College of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China.
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13
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Raza M, Jiang Y, Wei Y, Ahmad A, Khan A, Qipeng Y. Insights from spectroscopic and in-silico techniques for the exploitation of biomolecular interactions between Human serum albumin and Paromomycin. Colloids Surf B Biointerfaces 2017; 157:242-253. [DOI: 10.1016/j.colsurfb.2017.05.076] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/15/2017] [Accepted: 05/30/2017] [Indexed: 11/16/2022]
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14
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Kabir MZ, Tee WV, Mohamad SB, Alias Z, Tayyab S. Interaction of an anticancer drug, gefitinib with human serum albumin: insights from fluorescence spectroscopy and computational modeling analysis. RSC Adv 2016. [DOI: 10.1039/c6ra12019a] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Binding orientation of the GEF in the binding site III, located in subdomain IB of HSA.
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Affiliation(s)
- Md. Zahirul Kabir
- Biomolecular Research Group
- Biochemistry Programme
- Institute of Biological Sciences
- Faculty of Science
- University of Malaya
| | - Wei-Ven Tee
- Bioinformatics Programme
- Institute of Biological Sciences
- Faculty of Science
- University of Malaya
- Kuala Lumpur
| | - Saharuddin B. Mohamad
- Bioinformatics Programme
- Institute of Biological Sciences
- Faculty of Science
- University of Malaya
- Kuala Lumpur
| | - Zazali Alias
- Biomolecular Research Group
- Biochemistry Programme
- Institute of Biological Sciences
- Faculty of Science
- University of Malaya
| | - Saad Tayyab
- Biomolecular Research Group
- Biochemistry Programme
- Institute of Biological Sciences
- Faculty of Science
- University of Malaya
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15
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Banipal TS, Kaur A, Khan IA, Banipal PK. Exploring the thermodynamics and conformational aspects of nicotinic acid binding with bovine serum albumin: a detailed calorimetric, spectroscopic and molecular docking study. RSC Adv 2016. [DOI: 10.1039/c5ra28028a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
An attempt to obtain a physicochemical and conformational outlook on the binding interaction of vitamin B3 (NA) with a model transport protein BSA using calorimetry, light scattering, molecular docking, and spectroscopic techniques.
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Affiliation(s)
| | - Amandeep Kaur
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar – 143005
- India
| | - Imran Ahmd Khan
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar – 143005
- India
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