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Manea YK, Qashqoosh MTA, Rezakazemi M. In Vitro Hemoglobin Binding and Molecular Docking of Synthesized Chitosan-Based Drug-Carrying Nanocomposite for Ciprofloxacin-HCl Drug Delivery System. ACS OMEGA 2024; 9:6339-6354. [PMID: 38371765 PMCID: PMC10870405 DOI: 10.1021/acsomega.3c04632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 02/20/2024]
Abstract
Understanding the intermolecular interactions between antibiotic drugs and hemoglobin is crucial in biological systems. The current study aimed to investigate the preparation of chitosan/polysorbate-80/tripolyphosphate (CS-PS/TPP) nanocomposite as a potential drug carrier for Ciprofloxacin-HCl drug (CFX), intended for controlled release formulation and further used to interact with bovine hemoglobin. Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis-differential thermal analysis (TGA-DTA), scanning electron microscopy (SEM), dynamic light scattering (DLS), and X-ray diffraction analyses were used to characterize the CS-PS/TPP nanocomposite and its CFX-loaded nanocomposite. The second series of biophysical properties were performed on the Ciprofloxacin-loaded CS-PS/TPP (NCFX) for interaction with bovine hemoglobin (BHb). The interactions of (CFX and NCFX) with redox protein hemoglobin were investigated for the first time through a series of in vitro experimental techniques to provide comprehensive knowledge of the drug-protein binding interactions. Additionally, the effect of inclusion of PS-80 on the CFX-BHb interaction was also studied at different concentrations using fluorescence spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, and circular dichroism (CD) under physiological conditions. The binding process of CFX and NCFX was spontaneous, and the fluorescence of BHb was quenched due to the static mechanism formation of the (CFX/BHb) and (NCFX/BHb) complexes. Thermodynamic parameters ΔG, ΔH, and ΔS at various temperatures indicate that the hydrogen bonding and van der Waals forces play a major role in the CFX-BHb association.
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Affiliation(s)
| | - Mohsen T. A. Qashqoosh
- Department
of Chemistry, University of Aden, P.O. Box 6312 Aden, Yemen
- Department
of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Mashallah Rezakazemi
- Faculty
of Chemical and Materials Engineering, Shahrood
University of Technology, P.O. Box 3619995161 Shahrood, Iran
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2
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Skrabkova HS, Chernysheva MG, Baygildiev TM, Shnitko AV, Kasperovich AV, Egorova TB, Badun GA, Arutyunyan AM, Ksenofontov AL, Rodin IA. Lysozyme binding with amikacin and levofloxacin studied by tritium probe, fluorescence spectroscopy and molecular docking. Arch Biochem Biophys 2024; 751:109848. [PMID: 38065249 DOI: 10.1016/j.abb.2023.109848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 10/28/2023] [Accepted: 12/01/2023] [Indexed: 12/22/2023]
Abstract
Lysozyme complexes with amikacin and levofloxacin were studied by spectroscopy approaches as well as using a tritium probe. Tritium was used as a labeling agent to trace labeled compound concentration in a system of two immiscible liquids and in the atomic form to determine the possible position of the binding site. Co-adsorption of protein and drug at the liquid-liquid interface was analyzed by scintillation phase method that allowed us to directly determine the amount of protein and drug in the mixed adsorption layer. Also, tensiometric measuring of the interfacial tension was used for calculation of binding parameters accordingly to Fainerman model. The treatment of complexes with atomic tritium followed by trypsinolysis and analysis of tritium distribution in the lysozyme peptides reveals the binding sites, binding energies in which were analyzed using molecular docking. Formation of complexes with amikacin and levofloxacin preserves secondar structure of protein. However, the formation of complex with amikacin leads to the almost total loss of the enzymatic activity of lysozyme and the redshift of the maximum on the lysozyme fluorescence band. A slight decrease in the distribution coefficient of lysozyme in the presence of amikacin assumes that the complex has higher hydrophilicity in comparison to lysozyme without additives. The most favorable for binding were the positions of the active centers that included amino acids Asp52 and Glu35, as well as in the vicinity of peptide His15-Arg21, with the participation of amino acids Tyr20, Arg14. In the case of levofloxacin, the formation of lysozyme-ligand complex in aqueous solution is possible without changing the microenvironment of the active center of the protein. Binding of levofloxacin to the active center of the enzyme was the most favorable, but Asp52 and Glu35 that are responsible for the enzymatic activity of lysozyme, were not affected.
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Affiliation(s)
- Hanna S Skrabkova
- Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Maria G Chernysheva
- Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia.
| | - Timur M Baygildiev
- Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Alexey V Shnitko
- Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia
| | | | - Tolganay B Egorova
- Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Gennadii A Badun
- Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Alexander M Arutyunyan
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992, Moscow, Russia
| | - Alexander L Ksenofontov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992, Moscow, Russia
| | - Igor A Rodin
- Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia
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3
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Kaur L, Singh A, Datta A, Ojha H. Multispectroscopic studies of binding interaction of phosmet with bovine hemoglobin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 296:122630. [PMID: 37001261 DOI: 10.1016/j.saa.2023.122630] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/04/2023] [Accepted: 03/13/2023] [Indexed: 06/19/2023]
Abstract
Phosmet is a phthalimide derived broad spectrum organophosphate pesticide which is vastly used across the globe to protect several ornamental or horticulture crops. The toxicity of phosmet is of utmost concern because of its direct effect on the nervous system of the victim after exposure. The mechanism of phosmet toxicity was explored by the interaction with the model blood protein which is hemoglobin. Bovine Hemoglobin (BHb) is a major protein of red blood cells (RBCs) that plays an important role in the exchange of gases for respiration and ensures adequate oxygen supply to tissues for oxygenation. In the current study, the interaction of BHb with phosmet was revealed using various spectroscopic techniques. Circular dichroism (CD) and Fourier transform infrared spectroscopy (FTIR) studies of BHb in the presence of phosmet showed secondary structural changes in the protein post binding, Fluorescence study shows the involvement of the dynamic quenching predominantly, Van't Hoffs thermodynamic study showed negative enthalpy value and free energy change and negative entropy change that revealed the involvement of hydrogen bonding and van der Waal forces predominantly further revealing spontaneous nature of binding interaction. The shift in Ultraviolet-visible spectra also revealed the nature of the interaction. In-silico study finally deduced the involvement of hydrogen bonding and polar interaction. The study inferred the moderate interaction of BHb with phosmet.
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Affiliation(s)
- Lajpreet Kaur
- Division of RNAIS, Institute of Nuclear Medicine and Allied Sciences, DRDO, Timarpur, Delhi 110054, India
| | - Anju Singh
- Department of Chemistry, Ramjas College, University of Delhi, Delhi 110007, India
| | - Anupama Datta
- Division of RNAIS, Institute of Nuclear Medicine and Allied Sciences, DRDO, Timarpur, Delhi 110054, India
| | - Himanshu Ojha
- Division of RNAIS, Institute of Nuclear Medicine and Allied Sciences, DRDO, Timarpur, Delhi 110054, India.
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4
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Ma F, Deng L, Wang T, Zhang A, Yang M, Li X, Chen X. Determination of 2, 6-dipicolinic acid as an Anthrax biomarker based on the enhancement of copper nanocluster fluorescence by reversible aggregation-induced emission. Mikrochim Acta 2023; 190:291. [PMID: 37458835 DOI: 10.1007/s00604-023-05910-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 07/10/2023] [Indexed: 07/20/2023]
Abstract
The weak fluorescence efficiency of copper nanoclusters (Cu NCs) limits their wide applications in biosensing and bioimaging areas, while the aggregation-induced emission (AIE) effect is anticipated to increase their luminescence intensity. Herein, the weak red emission of Cu NCs is increased considerably by the addition of lanthanide Tb3+, ascribed to the AIE effect. Monitoring of spores contamination can be carried out by determining the level of 2, 6-dipicolinic acid (DPA), which is a marker of spores. Due to the stronger synergy between DPA and Tb3+ for its clamped configuration of adjacent pyridine nitrogen group with the carboxylic acid group, the addition of DPA leads Tb3+ to be taken away from Cu NCs through a stronger coordination effect, causing Cu NCs to return to the dispersed state and weakened fluorescence. Based on this, an "off-on-off" fluorescent probe for DPA sensing was built, in which Tb3+ was used as a bridge to achieve AIE enhanced fluorescence effect on Cu NCs as well as a specific recognizer of DPA. The detection range for DPA was 0.1-60 μM and the detection limit was 0.06 μM, which was much lower than the infectious dose of anthrax spores. Since DPA is a unique biomarker for bacterial spores, the method was applied to the detection of actual bacterial spores and satisfactory results were obtained with a detection limit of 4.9*103 CFU mL-1.
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Affiliation(s)
- Fanghui Ma
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Lei Deng
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Tingting Wang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Aomei Zhang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Minghui Yang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410083, China.
- Furong Labratory, Changsha, 410083, China.
| | - Xiaoqing Li
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410083, China.
- Furong Labratory, Changsha, 410083, China.
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410000, Hunan, China.
| | - Xiang Chen
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha, 410083, China.
- Furong Labratory, Changsha, 410083, China.
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410000, Hunan, China.
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Singh D, Kaur L, Singh P, Datta A, Pathak M, Tiwari AK, Ojha H, Singhal R. Luminescence and in-silico studies of binding interactions of arylpiperazinyl-butylbenzoxazolone based synthetic compounds with bovine serum albumin. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Singh D, Kaur L, Rahman AJ, Singh P, Kumar Tiwari A, Ojha H. Binding and mechanistic studies of 5-HT7 specific benzothiazolone derivatives with Bovine Serum Albumin: Spectroscopic and In silico studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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7
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Cui Z, He F, Li X, Jing M, Huo C, Zong W, Liu R. Molecular insights into the binding model and response mechanisms of triclosan with lysozyme. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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8
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Kaur L, Rahman AJ, Singh A, Pathak M, Datta A, Singhal R, Ojha H. Binding studies for the interaction between hazardous organophosphorus compound phosmet and lysozyme: Spectroscopic and In-silico analyses. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118954] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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9
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Liu H, Wang D, Ren Y, Wang L, Weng T, Liu J, Wu Y, Ding Z, Liu M. Multispectroscopic and synergistic antioxidant study on the combined binding of caffeic acid and (-)-epicatechin gallate to lysozyme. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 272:120986. [PMID: 35151167 DOI: 10.1016/j.saa.2022.120986] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/07/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
The binding of caffeic acid (CA) and/or (-)-epicatechin gallate (ECG) to lysozyme was investigated by multispectroscopic methods and molecular docking. The effects of the single and combined binding on the structure, activity and stability of lysozyme and the synergistic antioxidant activity of CA and ECG were also studied. Fluorescence quenching spectra, time-resolved fluorescence spectra, and UV-vis absorption difference spectra all ascertained the static quenching mechanism of lysozyme by CA/ECG. Thermodynamic parameters indicated that CA and ECG competitively bound to lysozyme, and CA had a stronger binding affinity, which was consistent with the results of molecular docking. Hydrogen bonding, van der Waals' force and electrostatic interaction were the main driving forces for the binding process. Synchronous fluorescence spectra displayed that the interaction of CA/ECG exposed the tryptophan residues of lysozyme to a more hydrophilic environment. Circular dichroism spectroscopy, Fourier transform infrared spectroscopy and dynamic light scattering indicated that the binding of CA and/or ECG to lysozyme resulted in the change of the secondary structure and increased the particle size of lysozyme. The binding of CA and/or ECG to lysozyme inhibited the enzyme activity and enhanced the thermal stability of lysozyme. The combined application of CA and ECG showed antioxidant synergy which was influenced by the encapsulation of lysozyme and cellular uptake. In summary, this work provides theoretical guidance for lysozyme as a carrier for the combined application of CA and ECG.
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Affiliation(s)
- He Liu
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Danfeng Wang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, China
| | - Yongfang Ren
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, China
| | - Lu Wang
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Tianxin Weng
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, China
| | - Jie Liu
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Yushu Wu
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, China
| | - Zhuang Ding
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, China
| | - Min Liu
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China; Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng 252059, China.
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10
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Liu H, Liu M, Wang D, Wang L, Zhao Y, Liu J, Wu Y, Sun B, Zhang Y. Competitive binding of synergistic antioxidant chlorogenic acid and (−)-epigallocatechin gallate with lysozyme: Insights from multispectroscopic characterization, molecular docking and activity evaluation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117387] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Baruah K, Haque M, Langbang L, Das S, Aguan K, Singha Roy A. Ocimum sanctum mediated green synthesis of silver nanoparticles: A biophysical study towards lysozyme binding and anti-bacterial activity. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116422] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Gaurav M, Natesh A, Arundhati A, Mariam D. Biochemical aspects of hemoglobin-xenobiotic interactions and their implications in drug discovery. Biochimie 2021; 191:154-163. [PMID: 34474139 DOI: 10.1016/j.biochi.2021.08.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/27/2021] [Accepted: 08/17/2021] [Indexed: 11/18/2022]
Abstract
Hemoglobin, a homodimeric globular protein, is found predominantly in red blood cells and in a small amount in blood plasma. Along with binding to certain native molecules, it also interacts with various xenobiotics. The present review aims at studying these interactions and the resultant tangible impact on the structure and function of the protein if any. The review also encompasses various analytical and computational approaches which are routinely used to study these interactions. A detailed discussion on types of interaction exhibited by individual xenobiotics has been included herein. Additionally, the effects of xenobiotic binding on the oxygen carrying capacity of hemoglobin have been reviewed. These insights would be of great value in drug design and discovery. Envisaging probable interactions of designed ligands with hemoglobin would help improvise the process of drug development. This would also open up new avenues for studying hemoglobin-mediated drug delivery.
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Affiliation(s)
- Mehta Gaurav
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, India
| | - Ahuja Natesh
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, India
| | - Abhyankar Arundhati
- Shri Vile Parle Kelavani Mandal's Dr Bhanuben Nanavati College of Pharmacy, India
| | - Degani Mariam
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, India.
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Kaushal D, Lal H, Ansari SS, Naqvi S. Effect of local anesthetic drug procaine hydrochloride on the conformational stability of bovine hemoglobin: Multi-spectroscopic and computational approaches. J Biomol Struct Dyn 2021; 40:8938-8948. [PMID: 33970817 DOI: 10.1080/07391102.2021.1920465] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The interaction between bovine hemoglobin (BHb) and local anesthetic drug procaine hydrochloride (PCH) was examined by spectroscopic and computational studies. Intrinsic fluorescence analysis explored the ground-state complex formation in the binding of PCH with BHb through static quenching mechanism. The binding constants (Kb) are 29.38 × 103, 22.54 × 103 and 17.99 × 103 M-1 at 288, 298 and 308 K, respectively, and the ratio of BHb:PCH was 1:1 in the interaction mechanism of PCH and BHb. The acquired thermodynamic parameters (ΔH0, ΔG0 and ΔS0) demonstrated that interaction mechanism is spontaneous and enthalpy driven. The van der Waals forces and hydrogen bonding have been played a predominant role in the binding mechanism. The UV-vis spectroscopy validates the ground-state complexation between PCH and BHb and the binding constant (Kb) has been evaluated utilizing Benesi-Hildebrand equation. Fluorescence resonance energy transfer (FRET) results have demonstrated that the distance between donor (BHb) and acceptor (PCH) is very short (2.34 nm) suggesting a significant probability to energy transfer from BHb to PCH. Synchronous fluorescence results revealed that the alteration in the micro-environment of Tyrosine (Tyr) is more than tryptophan (Trp) residues suggesting that PCH molecule is close to Tyr residue. The secondary structure alterations were confirmed by CD, 3-D fluorescence and FT-IR spectroscopic measurements. Moreover, computational analyses further corroborated that PCH molecules are closer to Tyr residues as compared to Trp residues of BHb during the interaction process. The BHb-PCH complexes may contribute to a deeper understanding of the metabolism of drug, blood circulation process and may help to illustrate the relationship between functions and structure of BHb.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Deepak Kaushal
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Hira Lal
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | | | - Saeeda Naqvi
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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Khatun S, Sindhu A, Venkatesu P. Can stem bromelain, a pineapple waste product, be used as a drug alternative? A mechanistic insight into protein–protein interactions. NEW J CHEM 2020. [DOI: 10.1039/d0nj02511a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Binding of stem bromelain to bovine serum albumin induced conformational changes, as shown by various biophysical techniques.
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Affiliation(s)
- Samima Khatun
- Department of Chemistry
- University of Delhi
- Delhi
- India
- Department of Chemistry
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15
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Synthesis, characterization and spectroscopic studies of surfactant loaded antiulcer drug into Chitosan nanoparticles for interaction with bovine serum albumin. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2019.110462] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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16
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Baral A, Satish L, Das DP, Sahoo H, Ghosh MK. Molecular interactions of MnO 2@RGO (manganese dioxide-reduced graphene oxide) nanocomposites with bovine serum albumin. J Biomol Struct Dyn 2019; 38:2038-2046. [PMID: 31282288 DOI: 10.1080/07391102.2019.1640131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Graphene based materials have attracted global attention due to their excellent properties. GO-metal oxide nanocomposites have been conjugated with biomolecules for the development of novel materials and potentially used as biomarkers. Herein, a detailed study on the interaction of Bovine serum albumin (BSA) with MnO2@RGO (manganese dioxide-reduced graphene oxide) nanocomposites (NC) has been carried out. MnO2@RGO nanocomposites were prepared through a template/surfactant free hydrothermal route at 180 °C for 12 h by varying the graphene oxide (GO) concentration. Different biophysical experiments have been carried out to evaluate molecular interactions between BSA and NCs. Intrinsic fluorescence has been used to quantify the quenching efficiency of NCs and the binding association of BSA-NC complexes. NCs effectively quenched the intrinsic fluorescence of BSA via static and dynamic mechanism. Further, the results indicate that the molecular interactions of NC with BSA are dependent on the GO percentage in NC. Circular dichroism results demonstrate nominal changes in the secondary structure of BSA in presence of NCs. Also, the esterase-like activity of BSA was marginally affected after adsorption upon NCs. In addition, the FESEM micrographs reveal that the protein-NC complexes consist of nanorod and sheet-like morphologies are forming aggregates of different sizes. We hope that this study will provide a basis for the design of novel graphene based and other related nanomaterials for several biological applications.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Ayonbala Baral
- Hydro & Electrometallurgy Department, CSIR- Institute of Minerals and Materials Technology, Bhubaneswar, Odisha, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Lakkoji Satish
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Dipti Prakasini Das
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,Colloids & Material Chemistry Department, CSIR- Institute of Minerals and Materials Technology, Bhubaneswar, Odisha, India
| | - Harekrushna Sahoo
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Malay Kumar Ghosh
- Hydro & Electrometallurgy Department, CSIR- Institute of Minerals and Materials Technology, Bhubaneswar, Odisha, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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