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Sargolzaei J, Jalali E, Rajabi P. Insights into the binding of buspirone to human serum albumin using multi-spectroscopic and molecular docking techniques. Heliyon 2024; 10:e29430. [PMID: 38638949 PMCID: PMC11024617 DOI: 10.1016/j.heliyon.2024.e29430] [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: 11/01/2023] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/20/2024] Open
Abstract
Buspirone is an anxiolytic drug that plays a significant role in managing anxiety disorders and alleviating their symptoms as well. Several techniques were utilized to study the interaction between buspirone and human serum albumin under physiological conditions, including UV-vis absorption spectroscopy, fluorescence emission spectroscopy, circular dichroism, Fourier transform infrared spectroscopy (FT-IR), equilibrium dialysis, and molecular docking. The results of this study demonstrated that buspirone quenched the intrinsic fluorescence of human serum albumin through a mixed mechanism. Moreover, the binding constants (Kb), the quenching constants (Ksv), and thermodynamic parameters were calculated at various temperatures. The binding process of buspirone to human serum albumin showed a cooperative binding pattern, confirmed by the Scatchard diagram and Hill coefficient. Molecular docking results showed that buspirone interacted with the IIA, IIIA, and IIB subdomains of human serum albumin and slightly changed its conformation. It was also found that hydrophobic forces played a major role in this interaction. This study consequently proves that BSH as a drug can be transported by blood albumin. Additionally, due to its ratiometric response in absorbance upon binding to a biological target, HSA can be used as a molecular probe to follow biomolecular interactions.
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Affiliation(s)
- Javad Sargolzaei
- Department of Biology, Faculty of Science, Arak University, Arak, 38156-8-8349, Iran
| | - Elaheh Jalali
- Department of Biology, Faculty of Science, Arak University, Arak, 38156-8-8349, Iran
| | - Parisa Rajabi
- Department of Psychiatry, Arak University of Medical Sciences, Arak, Iran
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2
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Mohanty S, Mishra SS, Kuldeep, Maharana J, Subuddhi U. Insight into the Effect of Submicellar Concentrations of Sodium Deoxycholate on the Structure, Stability, and Activity of Bovine and Human Serum Albumin: An Interesting Comparison between Single and Double Tryptophan Proteins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5228-5244. [PMID: 38413419 DOI: 10.1021/acs.langmuir.3c03541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
The progressive escalation in the applications of bile salts in diverse fields has triggered research on their interaction with various biological macromolecules, especially with proteins. A proper understanding of the interaction process of bile salts, particularly in the lower concentrations range, with the serum albumin seems important since the normal serum concentration of bile salts is approximately in the micromolar range. The current study deals with a comprehensive and comparative analysis of the interaction of submicellar concentrations of sodium deoxycholate (NaDC) with two homologous transport proteins: bovine serum albumin (BSA) and human serum albumin (HSA). HSA and BSA with one and two tryptophans, respectively, provide the opportunity for an interesting comparison of tryptophan fluorescence behavior on interaction with NaDC. The study suggests a sequential interaction of NaDC in three discrete stages with the two proteins. A detailed study using warfarin and ibuprofen as site markers provides information about the sites of interaction, which is further confirmed by inclusive molecular dynamics simulation analysis. Moreover, the comparison of the thermodynamics and stability of the NaDC-serum albumin complexes confirms the stronger interaction of NaDC with BSA as compared to that with HSA. The differential interaction between the bile salt and the two serum albumins is further established from the difference in the extent of decrease in the esterase-like activity assay of the proteins in the presence of NaDC. Therefore, the present study provides important insight into the effect of submicellar concentrations of NaDC on the structure, stability, and activity of the two homologous serum albumins and thus can contribute not only to the general understanding of the complex nature of serum albumin-bile salt interactions but also to the design of more effective pharmaceutical formulations in the field of drug delivery and biomedical research.
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Affiliation(s)
- Subhrajit Mohanty
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - Smruti Snigdha Mishra
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - Kuldeep
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - Jitendra Maharana
- Distributed Information Centre, Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat 785013, Assam, India
| | - Usharani Subuddhi
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
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3
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Jin X, Xu Z, Zhang M, Jia W, Xie D. Potential toxic effects of perfluorobutanesulfonyl fluoride analysis based on multiple-spectroscopy techniques and molecular modelling analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123677. [PMID: 38039643 DOI: 10.1016/j.saa.2023.123677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/17/2023] [Accepted: 11/21/2023] [Indexed: 12/03/2023]
Abstract
Perfluorobutanesulfonyl fluoride (PBSF) has been used in the manufacture of fluorochemicals. Since PBSF is not biodegradable, the predicted environmental levels of PBSF are also expected to rise over time. In recent years, there has been a rise in the levels of PBSF in humans. In order to clarify the impact of PBSF on the accumulation of substances in the human body, we examined the interaction mechanism between PBSF and bovine serum albumin (BSA). To investigate the interaction mechanism between PBSF and BSA, we utilized a range of methods including UV-visible spectrophotometry, fluorescence spectroscopy, circular dichroism, molecular docking simulation, and molecular dynamics (MD) simulation. The inherent fluorescence of BSA was effectively suppressed by PBSF through fluorescence quenching analysis, using a static mechanism. The Ka value of 1.34 × 105 mol-1 L indicated a strong binding between PBSF and BSA. Further analysis of the interaction between PBSF and BSA involved examining thermodynamic parameters, fluorescence resonance energy transfer, and conducting other theoretical calculations. These investigations produced results that were in strong accordance with the experimental observations. The participation of hydrophobic interactions between BSA and PBSF was uncovered through molecular docking and MD simulation investigations. Furthermore, this investigation explored the impact of copper ions (Cu2+) and calcium ions (Ca2+) on the interaction between PBSF and BSA, establishing a vital basis for comprehending the mechanism by which PBSF affects proteins in the human surroundings.
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Affiliation(s)
- Xiangying Jin
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Ziang Xu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Manwen Zhang
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Wenchao Jia
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China.
| | - Danping Xie
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
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4
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Fatima S, Hussain I, Ahmed S, Afaq MA, Tabish M. Insight into the interaction of isochroman with bovine serum albumin: extensive experimental and computational investigations. J Biomol Struct Dyn 2024:1-15. [PMID: 38319026 DOI: 10.1080/07391102.2024.2310203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 01/19/2024] [Indexed: 02/07/2024]
Abstract
The way therapeutic compounds interact with serum protein provides valuable information on their pharmacokinetics, toxicity, effectiveness, and even their structural-related information. Isochroman (IC) is a phytochemical compound obtained from the leaves of Olea europea plant. The derivatives of IC have various pharmacological properties including antidepressants, antihistamines, antiinflammation, anticonvulsants, appetite depressants, etc. The binding of small molecules to bovine serum albumin (BSA) is useful to ensure their efficacy. Thus, in this study, we have found out the binding mode of IC with BSA using several spectroscopic and in silico studies. UV and fluorescence spectroscopy suggested the complex formation between IC and BSA with a binding constant of 103 M-1. IC resulted in fluorescence quenching in BSA through static mechanism. The microenvironmental and conformational changes in BSA were confirmed using synchronous and three-dimensional studies. Site marker experiment revealed the IC binding in site-III of BSA. The influence of vitamins, metals and β-cyclodextrin (β-CD) on binding constant of IC-BSA complex was also examined. Circular dichroism spectra showed that α-helical of BSA decreased upon interaction with IC. Computational and experimental results were complimentary with one another and assisted in determining the binding sites, nature of bonds and amino acids included in the IC-BSA complex formation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sana Fatima
- Department of Biochemistry, Faculty of Life Science, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Irfan Hussain
- Department of Biochemistry, Faculty of Life Science, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Shahbaz Ahmed
- Department of Biochemistry, Faculty of Life Science, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Mohd Abuzar Afaq
- Department of Biochemistry, Faculty of Life Science, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Mohammad Tabish
- Department of Biochemistry, Faculty of Life Science, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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5
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Jeevanandam J, Murugan NA, Saraswathi NT. Insights into the conformational, secondary structural, dynamical and hydration pattern changes of glucose mediated glycated HSA: a molecular dynamics approach. J Biomol Struct Dyn 2024:1-13. [PMID: 38212976 DOI: 10.1080/07391102.2024.2301749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 12/28/2023] [Indexed: 01/13/2024]
Abstract
The robust structural nature of human serum albumin (HSA) is responsible for its multifarious functional property. The site specific glycation of HSA due to hyperglycaemia (excess glucose) causes structural changes which have an impact on the functioning of the protein. This work investigates the effects of glucose-mediated glycation in the altered inter-domain motion, distorted binding site conformation and modified hydration patterns, Trp214 orientation, and secondary structure transition using simulation approach. Here we have observed an increase of turns in the helices of glycated HSA, which modulates the open-close conformation of Sudlow I & II. The secondary structure changes of glycated HSA indicate plausible reduction in the alpha helical content in the helices which participates in ligand binding. It also affects geometrical features of drug binding sites (Sudlow I and II) such as volume and hydration. We found that glycation disturbs domain specific mobility patterns of HSA, a substantial feature for albumin drug binding ability which is also correlated with changes in the local environment of Trp214.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Jayanth Jeevanandam
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, Tamilnadu, India
| | - N Arul Murugan
- Department of Computational Biology, Indraprastha Institute of Information Technology, New Delhi, India
| | - N T Saraswathi
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, Tamilnadu, India
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6
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Wang Y, Luo Z, Morelli X, Xu P, Jiang L, Shi X, Huang M. Crystal structures of human serum albumin in complex with lysophosphatidylcholine. Biophys J 2023; 122:4135-4143. [PMID: 37731243 PMCID: PMC10645546 DOI: 10.1016/j.bpj.2023.09.007] [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: 07/07/2023] [Revised: 09/04/2023] [Accepted: 09/14/2023] [Indexed: 09/22/2023] Open
Abstract
Lysophospholipids (lysoPLs) are crucial metabolites involved in various physiological and pathological cellular processes. Understanding their binding interactions, particularly with human serum albumin (HSA), is essential due to their role in regulating lysoPLs-induced cytotoxicity. However, the precise mechanism of lysoPLs binding to HSA remains elusive. In this study, we employed fluorescence quenching and optical interferometry assays to demonstrate direct binding between lysophosphatidylcholine (LPC) and HSA (KD = 25 μM). Furthermore, we determined crystal structures of HSA in complex with LPC, both in the absence and the presence of the endogenous fatty acid myristate (14:0). The crystal structure of binary HSA:LPC revealed that six LPC molecules are bound to HSA at the primary fatty acid binding sites. Interestingly, the ternary HSA:Myr:LPC structure demonstrated the continued binding of three LPC molecules to HSA at binding sites 1, 3, and 5 in the presence of myristate. These findings support HSA's role as a carrier protein for lysoPLs in blood plasma and provide valuable insights into the structural basis of their binding mechanisms.
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Affiliation(s)
- Yu Wang
- College of Chemistry, Fuzhou University, Fuzhou, China; Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | | | - Xavier Morelli
- CRCM, CNRS, INSERM, Institut Paoli-Calmettes, University Aix-Marseill1715e, Marseille, France
| | - Peng Xu
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, China
| | | | - Xiaoli Shi
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, China.
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7
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Naz F, Khan I, Baammi S, Islam A. Investigation of the interactions of HSA and SARS-CoV-2 papain-like protease against eugenol for novel COVID-19 drug discovery: spectroscopic and insilico study. J Biomol Struct Dyn 2023; 41:10161-10170. [PMID: 36636828 DOI: 10.1080/07391102.2022.2164062] [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: 03/24/2022] [Accepted: 11/24/2022] [Indexed: 01/14/2023]
Abstract
Coronavirus family consist of a member known as SARS-CoV-2, spread drastically in 2019 (Covid-19), affecting millions of people worldwide. Till date there is no clear-clinical therapy or drug, targeted to cure this serious disease. Researches are going on to prevent this corona virus. Here, we tried to explore a novel SARS-CoV-2 papain-like protease as a potential inhibitor. Finally, eugenol was docked with this protease to find prime SARS-inhibitors. In silico studies revealed that eugenol binds to the active site of SARS-CoV-2 papain-like protease with appropriate binding. Moreover, the MD simulation for 100 ns and MMPBSA calculation reveals that eugenol possess potential phytotherapeutic properties against COVID-19. The interaction of eugenol with human serum albumin has been examined by using fluorescence, UV-vis spectroscopy, circular dichroism as well as computational techniques such as molecular docking, molecular dynamic simulation and MMPBSA calculation. Overall investigation shows eugenol having good affinity for HSA Ka 6.80 × 106 M-1.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Farheen Naz
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, India
| | - Imran Khan
- Department of Computer Science, Deanship of Educational Services, Qassim University, Buraidah, Al Qassim, Saudi Arabia
| | - Soukayna Baammi
- African Genome Centre (AGC), Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Asimul Islam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
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8
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Toxicity Study and Binding Analysis of Newly Synthesized Antifungal N-(4-aryl/cyclohexyl)-2-(pyridine-4-yl carbonyl) hydrazinecarbothioamide Derivative with Bovine Serum Albumin. Int J Mol Sci 2023; 24:ijms24054942. [PMID: 36902371 PMCID: PMC10002925 DOI: 10.3390/ijms24054942] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
The presence of the p-aryl/cyclohexyl ring in the N-(4-aryl/cyclohexyl)-2-(pyridine-4-yl carbonyl) hydrazine carbothioamide derivative (2C) is reported to enhance the antifungal properties when compared to those of itraconazole. Serum albumins present in plasma bind and transport ligands, including pharmaceuticals. This study explored 2C interactions with BSA using spectroscopic methods such as fluorescence and UV-visible spectroscopy. In order to acquire a deeper comprehension of how BSA interacts with binding pockets, a molecular docking study was carried out. The fluorescence of BSA was quenched by 2C via a static quenching mechanism since a decrease in quenching constants was observed from 1.27 × 105 to 1.14 × 105. Thermodynamic parameters indicated hydrogen and van der Waals forces responsible for the BSA-2C complex formation with binding constants ranging between 2.91 × 105 and 1.29 × 105, which suggest a strong binding interaction. Site marker studies displayed that 2C binds to BSA's subdomains IIA and IIIA. Molecular docking studies were conducted to further comprehend the molecular mechanism of the BSA-2C interaction. The toxicity of 2C was predicted by Derek Nexus software. Human and mammalian carcinogenicity and skin sensitivity predictions were associated with a reasoning level of equivocal, inferring 2C to be a potential drug candidate.
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9
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Hussain I, Fatima S, Ahmed S, Tabish M. Biophysical and molecular modelling analysis of the binding of β-resorcylic acid with bovine serum albumin. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108175] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Investigation of structural changes in human serum albumin after binding with elaidic acid. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Sharma S, Takkella D, Kumar P, Gavvala K. Spectroscopic analysis to identify the binding site for Rifampicin on Bovine Serum Albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 283:121721. [PMID: 35964352 DOI: 10.1016/j.saa.2022.121721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
This article reports the interaction of rifampicin, one of the important antituberculosis drugs, with Bovine Serum Albumin (BSA). Herein, we have monitored the fluorescence properties of tryptophan (Trp) residue in BSA to understand the interactions between protein and rifampicin. Fluorescence intensity of BSA was quenched tremendously upon interacting with the drug. Using steady state and time-resolved spectroscopic tools the static and dynamic nature of quenching have been characterised. Time correlated single photon counting technique confirmed that out of two lifetime components ∼6.2 ns and ∼2.8 ns of BSA, the rifampicin has affected only the shorter lifetime component a lot that was assigned to Trp-213 residue. Hence, it was thought that the drug must have been located near to the amino acid residue. Molecular docking studies have revealed the structural information of drug-protein complex which supported the above conjecture, confirming the nearest tryptophan as Trp-213 to the complexing rifampicin molecule.
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Affiliation(s)
- Sudhanshu Sharma
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Dineshbabu Takkella
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Pintu Kumar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Krishna Gavvala
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India.
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12
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Mihajlović K, Joksimović N, Radisavljević S, Petronijević J, Filipović I, Janković N, Milović E, Popović S, Matić S, Baskić D. Examination of antitumor potential of some acylpyruvates, interaction with DNA and binding properties with transport protein. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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A Long Journey into the Investigation of the Structure–Dynamics–Function Paradigm in Proteins through the Activities of the Palermo Biophysics Group. BIOPHYSICA 2022. [DOI: 10.3390/biophysica2040040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
An overview of the biophysics activity at the Department of Physics and Chemistry Emilio Segrè of the University of Palermo is given. For forty years, the focus of the research has been on the protein structure–dynamics–function paradigm, with the aim of understanding the molecular basis of the relevant mechanisms and the key role of solvent. At least three research lines are identified; the main results obtained in collaboration with other groups in Italy and abroad are presented. This review is dedicated to the memory of Professors Massimo Ugo Palma, Maria Beatrice Palma Vittorelli, and Lorenzo Cordone, which were the founders of the Palermo School of Biophysics. We all have been, directly or indirectly, their pupils; we miss their enthusiasm for scientific research, their deep physical insights, their suggestions, their strict but always constructive criticisms, and, most of all, their friendship. This paper is dedicated also to the memory of Prof. Hans Frauenfelder, whose pioneering works on nonexponential rebinding kinetics, protein substates, and energy landscape have inspired a large part of our work in the field of protein dynamics.
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14
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Guo M, Zheng Y, Ni K, Jin Z, Jokerst JV, Zhou Q, Yao Y. Highly catalytic supramolecular host-guest complex for high value directional conversion of lignin to syringyl monomer. BIORESOURCE TECHNOLOGY 2022; 364:128020. [PMID: 36162781 DOI: 10.1016/j.biortech.2022.128020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
In order to meet the challenge of enzyme catalysis of waste lignin, laccase (LAC)- guaiacyl(G)-type monomers noncovalent supramolecular system (LGS) were constructed for conversion of lignin. In this contribution, the catalytic effect of LGS formed by LAC and G-type monomers was studied. LAC changes the secondary structure conformation of its binding site to accommodate the G-type monomer, which is bound by hydrogen bonding and hydrophobic interactions. A mechanistic study highlights that the non-covalent complexation accelerates the internal electron transfer rate of LGS and syringol substrate for subsequent coupling reactions. In the presence of guaiacol/4-ethylguaiacol/vanillin-LAC, the conversion of dealkali lignin were 16.44, 29.12 and 22.72, respectively, higher than that in the presence of LAC alone. And the product of syringyl monomer was significantly increased in the actual lignin catalysis. Our work explains the mechanisms underlying existing enzyme-substrate interactions and enhanced catalytic system can be used for efficient utilization of waste.
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Affiliation(s)
- Ming Guo
- College of Chemistry and Materials Engineering, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang 311300, China.
| | - Yilu Zheng
- College of Chemistry and Materials Engineering, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang 311300, China
| | - Kaijie Ni
- College of Chemistry and Materials Engineering, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang 311300, China
| | - Zhicheng Jin
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, United States
| | - Jesse V Jokerst
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, United States
| | - Qingteng Zhou
- College of Chemistry and Materials Engineering, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang 311300, China
| | - Yecen Yao
- College of Chemistry and Materials Engineering, Zhejiang Agriculture & Forestry University, Hangzhou, Zhejiang 311300, China
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15
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Heck JR, Miele E, Mouthaan RP, Frosz MH, Knowles TPJ, Euser TG. Label-free monitoring of proteins in optofluidic hollow-core photonic crystal fibres. Methods Appl Fluoresc 2022; 10. [PMID: 36084629 DOI: 10.1088/2050-6120/ac9113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/09/2022] [Indexed: 11/11/2022]
Abstract
The fluorescent detection of proteins without labels or stains, which affect their behaviour and require additional genetic or chemical preparation, has broad applications to biological research. However, standard approaches require large sample volumes or analyse only a small fraction of the sample. Here we use optofluidic hollow-core photonic crystal fibres to detect and quantify sub-microlitre volumes of unmodified bovine serum albumin (BSA) protein down to 100 nM concentrations. The optofluidic fibre's waveguiding properties are optimised for guidance at the (auto)fluorescence emission wavelength, enabling fluorescence collection from a 10 cm long excitation region, increasing sensitivity. The observed spectra agree with spectra taken from a conventional cuvette-based fluorimeter, corrected for the guidance properties of the fibre. The BSA fluorescence depended linearly on BSA concentration, while only a small hysteresis effect was observed, suggesting limited biofouling of the fibre sensor. Finally, we briefly discuss how this method could be used to study aggregation kinetics. With small sample volumes, the ability to use unlabelled proteins, and continuous flow, the method will be of interest to a broad range of protein-related research.
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Affiliation(s)
- Jan Robert Heck
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, CB3 071, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
| | - Ermanno Miele
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, Cambridgeshire, CB2 1TN, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
| | - Ralf P Mouthaan
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, Cambridgeshire, CB2 1TN, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
| | - Michael H Frosz
- Max Planck Institute for the Science of Light, Max-Planck-Institut fuer die Physik des Lichts, Staudtstr. 2, Erlangen, 91058, GERMANY
| | - Tuomas P J Knowles
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, Cambridgeshire, CB2 1TN, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
| | - Tijmen G Euser
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, Cambridgeshire, CB2 1TN, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
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16
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Insight into the binding of alpha-linolenic acid (ALA) on Human Serum Albumin using spectroscopic and molecular dynamics (MD) studies. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.09.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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França VLB, Amaral JL, Martins YA, Caetano EWS, Brunaldi K, Freire VN. Characterization of the binding interaction between atrazine and human serum albumin: Fluorescence spectroscopy, molecular dynamics and quantum biochemistry. Chem Biol Interact 2022; 366:110130. [PMID: 36037875 DOI: 10.1016/j.cbi.2022.110130] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/18/2022] [Accepted: 08/20/2022] [Indexed: 11/03/2022]
Abstract
Atrazine (ATR), one of the most used herbicides worldwide, causes persistent contamination of water and soil due to its high resistance to degradation. ATR is associated with low fertility and increased risk of prostate cancer in humans, as well as birth defects, low birth weight and premature delivery. Describing ATR binding to human serum albumin (HSA) is clinically relevant to future studies about pharmacokinetics, pharmacodynamics and toxicity of ATR, as albumin is the most abundant carrier protein in plasma and binds important small biological molecules. In this work we characterize, for the first time, the binding of ATR to HSA by using fluorescence spectroscopy and performing simulations using molecular docking, classical molecular dynamics and quantum biochemistry based on density functional theory (DFT). We determine the most likely binding sites of ATR to HSA, highlighting the fatty acid binding site FA8 (located between subdomains IA-IB-IIA and IIB-IIIA-IIIB) as the most important one, and evaluate each nearby amino acid residue contribution to the binding interactions explaining the fluorescence quenching due to ATR complexation with HSA. The stabilization of the ATR/FA8 complex was also aided by the interaction between the atrazine ring and SER454 (hydrogen bond) and LEU481(alkyl interaction).
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Affiliation(s)
- Victor L B França
- Departament of Physics, Federal University of Ceará, Fortaleza, 60440-900, Brazil
| | - Jackson L Amaral
- Departament of Physics, Federal University of Ceará, Fortaleza, 60440-900, Brazil
| | - Yandara A Martins
- Departament of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, 05508-000, Brazil
| | - Ewerton W S Caetano
- Federal Institute of Education, Science and Technology of Ceará, Fortaleza, 60040-531, Brazil
| | - Kellen Brunaldi
- Departament of Physiological Sciences, State University of Maringá, Maringá, 87020-900, Brazil.
| | - Valder N Freire
- Departament of Physics, Federal University of Ceará, Fortaleza, 60440-900, Brazil.
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18
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Sarkar O, Roy M, Biswal D, Ranjan Pramanik N, Paul S, Drew MGB, Chakrabarti S. Structural Exploration and Protein Binding Efficiencies of Binuclear Dioxidomolybdenum(VI) Complexes Constructed from ONO Chelator and Linear N−N Ditopic Spacer. ChemistrySelect 2022. [DOI: 10.1002/slct.202201412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Oiendrilla Sarkar
- Department of Chemistry University College of Science 92, Acharya Prafulla Chandra Road Kolkata 700009, West Bengal India
| | - Malini Roy
- Department of Chemistry University College of Science 92, Acharya Prafulla Chandra Road Kolkata 700009, West Bengal India
| | - Debanjana Biswal
- Department of Chemistry University College of Science 92, Acharya Prafulla Chandra Road Kolkata 700009, West Bengal India
| | - Nikhil Ranjan Pramanik
- Department of Chemistry Bidhannagar College EB-2 Sector-1, Salt Lake, Kolkata 700064 India
| | - Suvendu Paul
- Department of Chemistry BITS-Pilani Hyderabad Campus Shameerpet Hyderabad 500078, Telangana India
| | - Michael G. B. Drew
- Department of Chemistry The University of Reading Whiteknights Reading RG66AD UK
| | - Syamal Chakrabarti
- Department of Chemistry University College of Science 92, Acharya Prafulla Chandra Road Kolkata 700009, West Bengal India
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19
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Lincon A, Das S, DasGupta S. Capturing protein denaturation using electrical impedance technique. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Yang CT, Chu LK. Protein dynamics of human serum albumin at hypothermic temperatures investigated by temperature jump. Phys Chem Chem Phys 2022; 24:11079-11085. [PMID: 35471209 DOI: 10.1039/d2cp00220e] [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
Human serum albumin (HSA) is the most abundant protein in human plasma. Most protein dynamics studies of HSA have been performed above the hyperthermia temperature (>42 °C), so information on the dynamics under hypothermic conditions (<35 °C) is lacking. In this work, a tryptophan-based fluorescence temperature jump system was employed to investigate the thermally-induced dynamic process of HSA at a physiological concentration of ca. 45 mg mL-1 and pH = ca. 7 upon an instantaneous temperature increase from 25 °C to 30-43 °C. The observed kinetics manifested a three-state consecutive feature, . Upon analysis with the Arrhenius model, the rate coefficients k1 and k2 manifested piecewise temperature dependence, and the turning-point temperature was found to be ca. 34 °C, coinciding with the upper bound of hypothermic temperature. Meanwhile, the corresponding activation energies of the transitions at 34-43 °C were lower than those at 30-34 °C, suggesting that protein conformational adjustments at 34-43 °C were more feasible than those at hypothermic temperatures. These observations provided a fresh viewpoint on the relationship between the energetics of protein dynamics and the apparent functioning of a given protein at the molecular level.
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Affiliation(s)
- Chih-Tsun Yang
- Department of Chemistry, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Rd., Hsinchu 300044, Taiwan.
| | - Li-Kang Chu
- Department of Chemistry, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Rd., Hsinchu 300044, Taiwan.
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21
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Shubhashini A, Prabha N, Monica P, Chaudhari SR, Kapoor M. Short-chain β-manno-oligosaccharides from copra meal: structural characterization, prebiotic potential and anti-glycation activity. Food Funct 2022; 13:4086-4100. [PMID: 35315851 DOI: 10.1039/d2fo00013j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Size-exclusion chromatography, HR-ESI-MS and FT-IR of copra meal hydrolyzed by ManB-1601 showed the presence of oligosaccharides (CM-β-MOS) having a degree of polymerisation (DP) between 2 and 4. Thermal decomposition studies of the purified CM-β-MOS (DP 2, 3 and 4) showed mass loss at high temperatures (135.8 °C to 600 °C). DP2, DP3 and DP4 CM-β-MOS were adjudged as un-substituted Manβ-4Man, Manβ-4Manβ-4Man and Manβ-4Manβ-4Manβ-4Man, respectively, using NMR (1H and 13C) studies. During fermentation, purified CM-β-MOS supported the growth of Lactobacillus sp. and inhibited enteropathogens (Escherichia coli, Listeria monocytogenes and Salmonella typhi). Acetate was the predominant short-chain fatty acid produced by Lactobacillus sp. RT-PCR studies of L. plantarum WCFS1 fed with CM-β-MOS showed up-regulation (up to 6.7-fold) of the cellobiose utilization operon (pts23C and pbg6) and oligo-sucrose utilization loci (pts1BCA and agl2). Biochemical (free amino groups, carbonyl and fructosamine content), fluorescence (AGEs-specific and intrinsic) and molecular docking studies suggested the anti-glycation potential of CM-β-MOS.
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Affiliation(s)
- A Shubhashini
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru-570 020, India.
| | - Neelam Prabha
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru-570 020, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - P Monica
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru-570 020, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sachin Rama Chaudhari
- Department of Spices and Flavour Sciences, CSIR-Central Food Technological Research Institute, Mysuru 570 020, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mukesh Kapoor
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru-570 020, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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22
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Dorafshan Tabatabai AS, Dehghanian E, Mansouri-Torshizi H. Probing the interaction of new and biologically active Pd(II) complex with DNA/BSA via joint experimental and computational studies along with thermodynamic, NLO, FMO and NBO analysis. Biometals 2022; 35:245-266. [PMID: 35039973 DOI: 10.1007/s10534-022-00362-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 01/06/2022] [Indexed: 01/09/2023]
Abstract
Treatment with transition metal complexes is an efficient method to fight with cancer. Therefore, a new transition metal complex formulated as [Pd(1, 3-pn)(acac)]Cl (pn and acac stand for propylendiamine and acetylacetonate, respectively) was synthesized and analyzed using 1H NMR, Fourier transform infrared, electronic absorption spectroscopy techniques as well as elemental analysis and conductivity measurement. The geometry optimization, frontier molecular orbital (FMO) analysis, molecular electrostatic potential (MEP), natural bond orbital (NBO) analysis and nonlinear optical (NLO) property were accomplished by density functional theory (DFT) at B3LYP level with 6-311G(d,p)/aug-cc-pVTZ-PP basis set. Preliminary determination of antitumor activity and lipophilicity of this metal complex was performed experimentally and the promising results were obtained. This encouraged us to study the interaction and binding mode/modes of this complex with DNA as the primary receptor for the chemotropic drugs and BSA as the transporter protein in the circulatory system. For this reason, the binding of newly made complex was assessed in-vitro under physiological state using experimental and in-silico molecular modeling studies. So, the CT-DNA binding study of this complex was explored using spectrofluorometric as well as spectrophotometric techniques, viscosity and gel electrophoresis experiments. Furthermore, fluorescence, UV-Vis, F[Formula: see text]rster resonance energy transfer and circular dichroism studies were carried out for BSA binding. The experimental and computational interaction studies showed that [Pd(1, 3-pn)(acac)]Cl complex binds to the minor groove of CT-DNA and interacts with BSA by van der Waals forces and hydrogen bond.
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Affiliation(s)
| | - Effat Dehghanian
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran.
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23
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Pandit S, Bapli A, Seth D. Photophysics of a cyanine dye in the protein-surfactant aggregates. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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Khanikar RR, Kalita P, Narzary M, Basumatary D, Bharati AJ, Priyadarshi A, Swaminathan R, Bailung H, Sankaranarayanan K. Cold atmospheric plasma driven self-assembly in serum proteins: insights into the protein aggregation to biomaterials. RSC Adv 2022; 12:26211-26219. [PMID: 36275105 PMCID: PMC9476907 DOI: 10.1039/d2ra04318a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/31/2022] [Indexed: 11/29/2022] Open
Abstract
The self-assembly of proteins is crucial in many biomedical applications. This work deals with understanding the role of cold atmospheric plasma (CAP) on the self-assembly of two different proteins present in the serum – BSA and hemoglobin and to elucidate the process associated with the direct application of physical plasma on or in the human (or animal) body, which has implications in therapeutics. The work has been corroborated by several spectroscopic studies such as fluorescence spectroscopy, circular dichroism spectroscopy, and SEM analysis. Through steady-state fluorescence spectroscopy and by following the tryptophan fluorescence, we observed that the emission intensity was quenched for the protein when treated with plasma radiation. Circular dichroism spectroscopy revealed that the structure of the protein was altered both in the case of BSA and hemoglobin. N-Acetyl tryptophanamide (NATA), which resembles the tryptophan in the protein, was treated with CAP and we observed the similar quenching of fluorescence as in the proteins, indicating that the protein underwent self-assembly. Time-resolved fluorescence spectroscopy with a decrease in the lifetime revealed that the protein self-assembly was promoted with CAP treatment, which was also substantiated by SEM micrographs. The ROS/RNS produced in the CAP has been correlated with the protein self-assembly. This work will help to design protein self-assembled systems, and in the future, may bring possibilities of creating novel biomaterials with the help of plasma radiation. Self-assembly of proteins after CAP treatment.![]()
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Affiliation(s)
- Rakesh Ruchel Khanikar
- Biophysics – Physical Sciences Division, Institute of Advanced Study in Science and Technology, (An Autonomous Institute Under DST, Govt. of India), Vigyan Path, Paschim Boragaon, Garchuk, Guwahati, Assam 781035, India
| | - Parismita Kalita
- Biophysics – Physical Sciences Division, Institute of Advanced Study in Science and Technology, (An Autonomous Institute Under DST, Govt. of India), Vigyan Path, Paschim Boragaon, Garchuk, Guwahati, Assam 781035, India
| | - Monika Narzary
- Biophysics – Physical Sciences Division, Institute of Advanced Study in Science and Technology, (An Autonomous Institute Under DST, Govt. of India), Vigyan Path, Paschim Boragaon, Garchuk, Guwahati, Assam 781035, India
| | - Deepjyoti Basumatary
- Biophysics – Physical Sciences Division, Institute of Advanced Study in Science and Technology, (An Autonomous Institute Under DST, Govt. of India), Vigyan Path, Paschim Boragaon, Garchuk, Guwahati, Assam 781035, India
| | - Ashim Jyoti Bharati
- Biophysics – Physical Sciences Division, Institute of Advanced Study in Science and Technology, (An Autonomous Institute Under DST, Govt. of India), Vigyan Path, Paschim Boragaon, Garchuk, Guwahati, Assam 781035, India
| | - Anurag Priyadarshi
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - R. Swaminathan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Heremba Bailung
- Biophysics – Physical Sciences Division, Institute of Advanced Study in Science and Technology, (An Autonomous Institute Under DST, Govt. of India), Vigyan Path, Paschim Boragaon, Garchuk, Guwahati, Assam 781035, India
| | - Kamatchi Sankaranarayanan
- Biophysics – Physical Sciences Division, Institute of Advanced Study in Science and Technology, (An Autonomous Institute Under DST, Govt. of India), Vigyan Path, Paschim Boragaon, Garchuk, Guwahati, Assam 781035, India
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25
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Interaction Study between ESIPT Fluorescent Lipophile-Based Benzazoles and BSA. Molecules 2021; 26:molecules26216728. [PMID: 34771137 PMCID: PMC8586955 DOI: 10.3390/molecules26216728] [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: 10/09/2021] [Revised: 10/30/2021] [Accepted: 11/04/2021] [Indexed: 12/02/2022] Open
Abstract
In this study, the interactions of ESIPT fluorescent lipophile-based benzazoles with bovine serum albumin (BSA) were studied and their binding affinity was evaluated. In phosphate-buffered saline (PBS) solution these compounds produce absorption maxima in the UV region and a main fluorescence emission with a large Stokes shift in the blue–green regions due to a proton transfer process in the excited state. The interactions of the benzazoles with BSA were studied using UV-Vis absorption and steady-state fluorescence spectroscopy. The observed spectral quenching of BSA indicates that these compounds could bind to BSA through a strong binding affinity afforded by a static quenching mechanism (Kq~1012 L·mol−1·s−1). The docking simulations indicate that compounds 13 and 16 bind closely to Trp134 in domain I, adopting similar binding poses and interactions. On the other hand, compounds 12, 14, 15, and 17 were bound between domains I and III and did not directly interact with Trp134.
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26
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Characterization of Conjugates between α-Lactalbumin and Benzyl Isothiocyanate-Effects on Molecular Structure and Proteolytic Stability. Molecules 2021; 26:molecules26206247. [PMID: 34684828 PMCID: PMC8539348 DOI: 10.3390/molecules26206247] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/12/2021] [Accepted: 10/12/2021] [Indexed: 11/27/2022] Open
Abstract
In complex foods, bioactive secondary plant metabolites (SPM) can bind to food proteins. Especially when being covalently bound, such modifications can alter the structure and, thus, the functional and biological properties of the proteins. Additionally, the bioactivity of the SPM can be affected as well. Consequently, knowledge of the influence of chemical modifications on these properties is particularly important for food processing, food safety, and nutritional physiology. As a model, the molecular structure of conjugates between the bioactive metabolite benzyl isothiocyanate (BITC, a hydrolysis product of the glucosinolate glucotropaeolin) and the whey protein α-lactalbumin (α-LA) was investigated using circular dichroism spectroscopy, anilino-1-naphthalenesulfonic acid fluorescence, and dynamic light scattering. Free amino groups were determined before and after the BITC conjugation. Finally, mass spectrometric analysis of the BITC-α-LA protein hydrolysates was performed. As a result of the chemical modifications, a change in the secondary structure of α-LA and an increase in surface hydrophobicity and hydrodynamic radii were documented. BITC modification at the ε-amino group of certain lysine side chains inhibited tryptic hydrolysis. Furthermore, two BITC-modified amino acids were identified, located at two lysine side chains (K32 and K113) in the amino acid sequence of α-LA.
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27
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Wang PY, Yang CT, Chu LK. Differentiating the protein dynamics using fluorescence evolution of tryptophan residue(s): A comparative study of bovine and human serum albumins upon temperature jump. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138998] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Gałczyńska K, Ciepluch K, Kurdziel K, Biehl R, Arabski M. Spectroscopic and Small-angle X-ray scattering analysis of binding between Copper(II) -1-allylimidazole complex, a potential anti-tumor agent, and bovine serum albumin. Bioorg Chem 2021; 116:105327. [PMID: 34507233 DOI: 10.1016/j.bioorg.2021.105327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/12/2021] [Accepted: 08/30/2021] [Indexed: 11/15/2022]
Abstract
Interactions between transport proteins and compounds with therapeutic potential are pharmacologically important. In this study, using fluorescence, circular dichroism (CD), and small-angle X-ray Scattering (SAXS), we investigated the interaction between bovine serum albumin (BSA) and a copper(II)-1-allylimidazole complex with potential anti-cancer properties. The results revealed dynamic fluorescence quenching of the model carrier protein BSA by the copper(II) complex. The enthalpy change (ΔH), free energy (ΔG), and entropy change (ΔS) were calculated to be 108 kJ/mol, -16.47 kJ/mol, and 419 J/mol K, respectively, according to the Van't Hoff equation. The reaction was an endothermic and spontaneous process, and hydrophobic interactions played a major role in binding. The results indicate a much lower affinity (Kb ∼ 102-103) for the metal complex compared with similar compounds (Kb ∼ 103-105). CD showed that the studied copper(II) complex does not change the secondary structure of the protein, while SAXS showed that the this compound may attach to the protein surface and stimulate interactions between proteins. The results suggest that the copper(II) complex with 1-allylimidazole binds weakly to BSA, leading to aggregation of albumin in solution, thereby altering its pharmacokinetic properties. The findings are pertinent to drug design.
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Affiliation(s)
- Katarzyna Gałczyńska
- Institute of Biology, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland.
| | - Karol Ciepluch
- Institute of Biology, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland
| | - Krystyna Kurdziel
- Institute of Chemistry, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland
| | - Ralf Biehl
- Jülich Centre for Neutron Science & Institute of Biological Information Processing (JCNS-1&IBI-8), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Michał Arabski
- Institute of Biology, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland
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29
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Wiglusz K, Żurawska-Płaksej E, Rorbach-Dolata A, Piwowar A. How Does Glycation Affect Binding Parameters of the Albumin-Gliclazide System in the Presence of Drugs Commonly Used in Diabetes? In Vitro Spectroscopic Study. Molecules 2021; 26:molecules26133869. [PMID: 34202801 PMCID: PMC8270297 DOI: 10.3390/molecules26133869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 11/16/2022] Open
Abstract
In this research, the selected drugs commonly used in diabetes and its comorbidities (gliclazide, cilazapril, atorvastatin, and acetylsalicylic acid) were studied for their interactions with bovine serum albumin-native and glycated. Two different spectroscopic methods, fluorescence quenching and circular dichroism, were utilized to elucidate the binding interactions of the investigational drugs. The glycation process was induced in BSA by glucose and was confirmed by the presence of advanced glycosylation end products (AGEs). The interaction between albumin and gliclazide, with the presence of another drug, was confirmed by calculation of association constants (0.11-1.07 × 104 M-1). The nature of changes in the secondary structure of a protein depends on the drug used and the degree of glycation. Therefore, these interactions may have an influence on pharmacokinetic parameters.
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Affiliation(s)
- Katarzyna Wiglusz
- Department of Analytical Chemistry, Wroclaw Medical University, Borowska 211, PL-50556 Wrocław, Poland;
| | - Ewa Żurawska-Płaksej
- Department of Toxicology, Wroclaw Medical University, Borowska 211, PL-50556 Wrocław, Poland; (A.R.-D.); (A.P.)
- Department of Pharmaceutical Biochemistry, Wroclaw Medical University, Borowska 211, PL-50556 Wrocław, Poland
- Correspondence: ; Tel.: +48-71-784-0453
| | - Anna Rorbach-Dolata
- Department of Toxicology, Wroclaw Medical University, Borowska 211, PL-50556 Wrocław, Poland; (A.R.-D.); (A.P.)
| | - Agnieszka Piwowar
- Department of Toxicology, Wroclaw Medical University, Borowska 211, PL-50556 Wrocław, Poland; (A.R.-D.); (A.P.)
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30
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Sergio LM, Martins YA, Amaral JL, França VLB, de Freitas CF, Neto AM, Hioka N, Ravanelli MI, Mareze-Costa C, Claudio da Costa S, Freire VN, Brunaldi K. Molecular insight on the binding of stevia glycosides to bovine serum albumin. Chem Biol Interact 2021; 344:109526. [PMID: 34023281 DOI: 10.1016/j.cbi.2021.109526] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/09/2021] [Accepted: 05/16/2021] [Indexed: 10/21/2022]
Abstract
The interaction of the steviol and its glycosides (SG), steviolbioside, and rebaudioside A, with bovine serum albumin (BSA) was studied by absorption and fluorescence spectroscopy techniques alongside molecular docking. The stevia derivatives quenched the fluorescence of BSA by a dynamic quenching mechanism, indicating the interaction between the stevia derivatives and BSA. The binding constant (Kb) of steviol was 100-1000-fold higher than those of SG. The stevia derivative/BSA binding reaction was spontaneous and involved the formation of hydrogen bonds and van der Waals interactions between steviol and steviolbioside with BSA, and water reorganization around the rebaudioside A/BSA complex. Molecular docking pointed out the FA1 and FA9 binding sites of BSA as the probable binding sites of steviol and SG, respectively. In conclusion, steviol enhanced hydrophobicity and small size compared to SG may favor its binding to BSA. As steviol and its glycosides share binding sites on BSA with free fatty acids and drugs, they may be competitively displaced from plasma albumin under various physiological states or disease conditions. These findings are clinically relevant and provide an insight into the pharmacokinetics and pharmacodynamics of the stevia glycosides.
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Affiliation(s)
- Luciana M Sergio
- Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, 87020-900, Brazil
| | - Yandara A Martins
- Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, 87020-900, Brazil
| | - Jackson L Amaral
- Departamento de Física, Universidade Federal Do Ceará, Fortaleza, 60440-900, Brazil
| | - Victor L B França
- Departamento de Física, Universidade Federal Do Ceará, Fortaleza, 60440-900, Brazil
| | - Camila F de Freitas
- Departamento de Química, Universidade Estadual de Maringá, Maringá, 87020-900, Brazil
| | - Antônio Medina Neto
- Departamento de Física, Universidade Estadual de Maringá, Maringá, 87020-900, Brazil
| | - Noboru Hioka
- Departamento de Química, Universidade Estadual de Maringá, Maringá, 87020-900, Brazil
| | - Maria I Ravanelli
- Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, 87020-900, Brazil
| | - Cecília Mareze-Costa
- Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, 87020-900, Brazil
| | | | - Valder N Freire
- Departamento de Física, Universidade Federal Do Ceará, Fortaleza, 60440-900, Brazil
| | - Kellen Brunaldi
- Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, 87020-900, Brazil.
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31
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Salim MM, El Sharkasy ME, Belal F, Walash M. Multi-spectroscopic and molecular docking studies for binding interaction between fluvoxamine and human serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 252:119495. [PMID: 33524820 DOI: 10.1016/j.saa.2021.119495] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/04/2021] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
In the present study, different spectroscopic techniques have been used to study the binding interaction between the antidepressant drug fluvoxamine and human serum albumin under simulated physiological conditions (pH 7.4). The utilized spectroscopic techniques include fluorescence emission spectroscopy, synchronous fluorescence spectroscopy, UV-Vis absorption spectroscopy, Fourier Transform Infrared spectroscopy (FT-IR), and molecular modeling methods. The obtained results revealed that the formation of a complex between human serum albumin and fluvoxamine was responsible for quenching the native fluorescence of human serum albumin. The results indicated that the quenching mechanism between human serum albumin and fluvoxamine was static. Besides, the binding constant (K), number of binding sites (n), thermodynamic parameters (ΔH, ΔS, and ΔG), and binding forces were calculated at three different temperatures (298, 310, and 318 K). These data proposed that hydrophobic forces were the principal intermolecular forces stabilizing the complex. From the molecular docking results, it could be deduced that fluvoxamine was inserted into sub-domain II A (site I) of human serum albumin and led to a slight change in human serum albumin conformation.
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Affiliation(s)
- M M Salim
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Horus University-Egypt, New Damietta 34518, Egypt.
| | - Mona E El Sharkasy
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - F Belal
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - M Walash
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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ElKassas K, Chullipalliyalil K, McAuliffe M, Vucen S, Crean A. Fluorescence spectroscopy for the determination of reconstitution time of an in-vial lyophilised product. Int J Pharm 2021; 597:120368. [PMID: 33561500 DOI: 10.1016/j.ijpharm.2021.120368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 12/18/2022]
Abstract
Lyophilisation is a prominent technique used to create stabilised, dried forms of biopharmaceutical formulations. Reconstitution of lyophilised parenteral formulations is a key step prior to patient administration. The accurate determination of reconstitution time is a necessity to aid formulation development and support product quality control. Traditional methods for quantifying reconstitution time involve the visual identification of the endpoint, which has led to variable values reported across studies. In this work, the use of ultra-violet (UV) excited fluorescence spectroscopy as an alternative to the visual quantification of the reconstitution time was investigated. Spectrographic information was collected via a bespoke setup that allowed the measurement of the reconstitution time in a standard sealed lyophilisation vial. The spectra were analysed via principal component analysis (PCA) to obtain a time-based representation of the changes in a reconstituting formulation. The analysis was followed by the identification of an endpoint using three techniques ranging from fully automated to manual with regards to the required level of user input. At high protein concentration, the variability of the reconstitution time measurements was reduced from 80.4% relative standard deviation obtained via the traditional method to 8.2% for the instrumental method presented in.
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Affiliation(s)
- Khaled ElKassas
- SSPC Centre for Pharmaceutical Research, School of Pharmacy, University College Cork, T12 YT20, Ireland
| | | | - Michael McAuliffe
- Centre for Advanced Photonics & Process Analysis, Munster Technological University Cork, T12P928, Ireland
| | - Sonja Vucen
- SSPC Centre for Pharmaceutical Research, School of Pharmacy, University College Cork, T12 YT20, Ireland
| | - Abina Crean
- SSPC Centre for Pharmaceutical Research, School of Pharmacy, University College Cork, T12 YT20, Ireland
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33
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Gadallah MI, Ali HRH, Askal HF, Saleh GA. Towards understanding of the interaction of certain carbapenems with protein via combined experimental and theoretical approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:119005. [PMID: 33035884 DOI: 10.1016/j.saa.2020.119005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 09/18/2020] [Accepted: 09/22/2020] [Indexed: 05/16/2023]
Abstract
The interactions of the recent carbapenems; ertapenem (ERP) and meropenem (MRP); with serum albumin (SA) were closely investigated by a combined spectrofluorometric experimental and theoretical approach. The approach is based on the quenching of fluorescence intensity of bovine serum albumin (BSA) upon binding with different carbapenems. The quenching was observed at λem 333-340 nm after excitation at 280 nm. Mechanism of interaction was found to be static quenching through hydrophobic and H-bonding interactions and confirmed with molecular docking using MOE software. Binding constant, binding number were estimated for both MRP and ERP. Thermodynamic parameters including entropy change (ΔS), enthalpy change (ΔH) and free energy change (ΔG) were calculated at three different temperatures. Moreover, BSA configuration during binding was investigated via synchronous and 3D spectrofluorimetry. Förster resonance energy transfer calculated (FRET), integration interval (J) and distance (ro) between BSA and the studied drugs were calculated to confirm the static quenching.
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Affiliation(s)
- Mohamed I Gadallah
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt.
| | - Hassan Refat H Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Hassan F Askal
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Gamal A Saleh
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
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34
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Ju P, Zhang Y, Ding J, Zheng Y, Wang S, Jiang F, Sun C. New insights into the toxic interactions of polyvinyl chloride microplastics with bovine serum albumin. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:5520-5531. [PMID: 32968899 DOI: 10.1007/s11356-020-10707-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
The binding interaction between emerging pollutant polyvinyl chloride microplastics (PVC MPs) and bovine serum albumin (BSA) was studied by fluorescence spectroscopy, resonance scattering spectroscopy (RLS), UV-visible (UV-vis) absorption spectroscopy, circular dichroism (CD), and Fourier transform infrared (FT-IR) spectroscopy under simulative physiological conditions. Fluorescence results revealed that the fluorescence quenching of BSA induced by PVC MPs was originated from the formation of BSA-PVC complex in static quenching mode. According to Stern-Volmer equation, the binding constants (Ka) between PVC MPs and BSA at different temperatures were obtained, and the number of binding sites was 1.62. The thermodynamic parameters, enthalpy change (ΔH), entropy change (ΔS), and free energy change (ΔG) were calculated to be - 41.77 kJ mol-1, 43.17 J mol-1 K-1, and - 54.63 kJ mol-1 via Van't Hoff equation, indicating electrostatic interaction played a key role in the formation of BSA-PVC complex spontaneously. In addition, the alterations of microenvironment and secondary structure in BSA induced by PVC MPs were further confirmed by synchronous fluorescence spectra, UV-vis, FT-IR, and CD. This work not only provides further information for better understanding the binding interaction of PVC MPs with BSA, but also elucidates the potential biological toxicity of MPs at a molecular level.
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Affiliation(s)
- Peng Ju
- Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, 6 Xianxialing Road, Qingdao, 266061, People's Republic of China.
- Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Qingdao, 266237, People's Republic of China.
| | - Yu Zhang
- Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, 6 Xianxialing Road, Qingdao, 266061, People's Republic of China
| | - Jinfeng Ding
- Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, 6 Xianxialing Road, Qingdao, 266061, People's Republic of China
| | - Yifan Zheng
- Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, 6 Xianxialing Road, Qingdao, 266061, People's Republic of China
| | - Shuai Wang
- Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, 6 Xianxialing Road, Qingdao, 266061, People's Republic of China
| | - Fenghua Jiang
- Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, 6 Xianxialing Road, Qingdao, 266061, People's Republic of China
| | - Chengjun Sun
- Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, 6 Xianxialing Road, Qingdao, 266061, People's Republic of China.
- Laboratory of Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Qingdao, 266237, People's Republic of China.
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35
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Interaction of a hydrophilic molecule with bovine serum albumin: A combined multi-spectroscopic, microscopic and isothermal calorimetric study in the presence of graphene oxide. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114618] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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36
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Tier-0 protein dynamics of bovine serum albumin: A kinetics and energetics study of the collective domain motions. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2020.138102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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37
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Kovalska V, Vakarov S, Chornenka N, Gumienna-Kontecka E, Voloshin Y. Sensing of a Protein’s Structure Using the Induced Circular Dichroism Spectra by the Monocarboxyphenylsulfide Iron(II) Clathrochelates as Optical Reporters. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620100137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Ghosh R, Kishore N. Physicochemical Insights into the Role of Drug Functionality in Fibrillation Inhibition of Bovine Serum Albumin. J Phys Chem B 2020; 124:8989-9008. [DOI: 10.1021/acs.jpcb.0c06167] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ritutama Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Nand Kishore
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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39
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Samant V, Dey A, Naresh Patwari G. Probing the interaction between human serum albumin and the sodium dodecyl sulphate with fluorescence correlation spectroscopy. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-01816-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Akram M, Ansari F, Qais FA, Kabir-ud-Din. Binding of cationic Cm-E2O-Cm gemini surfactants with human serum albumin and the role of β-cyclodextrin. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113365] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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41
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Patnin S, Makarasen A, Kuno M, Deeyohe S, Techasakul S, Chaivisuthangkura A. Binding interaction of potent HIV-1 NNRTIs, amino-oxy-diarylquinoline with the transport protein using spectroscopic and molecular docking. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 233:118159. [PMID: 32120287 DOI: 10.1016/j.saa.2020.118159] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/11/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
In the present investigation, the intermolecular interaction of 4-(4'-cyanophenoxy)-2-(4''-cyanophenyl)-aminoquinoline (1), a potent non-nucleoside HIV-1 reverse transcriptase inhibitors, with the transport proteins, namely bovine serum albumin (BSA) and human serum albumin (HSA), has been investigated under physiological conditions employing UV-Vis, fluorescence spectrophotometry, competitive binding experiments and molecular docking methods. The results indicated that binding of (1) to the transport proteins caused fluorescence quenching though a static quenching mechanism. The number of binding site (n) and the apparent binding constant (Kb) between (1) and the transport proteins were determined to be about 1 and 104-105 L·mol-1 (at three different temperatures; 298, 308, 318 K), respectively. The interaction of (1) upon binding to the transport proteins was spontaneous. The enthalpic change (ΔH°) and the entropic change (ΔS°) were calculated to be -56.50 kJ·mol-1, -72.31 J·mol-1 K-1 for (1)/BSA, respectively and computed to be -49.35 kJ·mol-1, -58.64 J·mol-1 K-1, respectively for (1)/HSA, respectively. The results implied that the process of interaction force of (1) with the transport protein were Vander Waals force and/or hydrogen bonding interactions. The site maker competitive experiments revealed that the binding site of (1) with the transport proteins were mainly located within site I (sub-domain IIA) in both proteins. Additionally, the molecular docking experiment supported the above results which confirmed the binding interaction between (1) and the transport proteins. This study will come up with basic data for explicating the binding mechanisms of (1) with the transport protein and can be great significance in the opening to clarify the transport process of (1) in vivo.
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Affiliation(s)
- Suwicha Patnin
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Wattana, Bangkok 10110, Thailand
| | - Arthit Makarasen
- Department of Chemistry, Laboratory of Organic Synthesis, Chulabhorn Research Institute, Laksi, Bangkok 10210, Thailand.
| | - Mayuso Kuno
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Wattana, Bangkok 10110, Thailand
| | - Sirinya Deeyohe
- Department of Chemistry, Laboratory of Organic Synthesis, Chulabhorn Research Institute, Laksi, Bangkok 10210, Thailand
| | - Supanna Techasakul
- Department of Chemistry, Laboratory of Organic Synthesis, Chulabhorn Research Institute, Laksi, Bangkok 10210, Thailand
| | - Apinya Chaivisuthangkura
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Wattana, Bangkok 10110, Thailand.
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42
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Akshath US, Bhatt P, Singh SA. Differential Interaction of Metal Ions with Gold Nanoclusters and Application in Detection of Cobalt and Cadmium. J Fluoresc 2020; 30:537-545. [PMID: 32185584 DOI: 10.1007/s10895-020-02509-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/14/2020] [Indexed: 01/01/2023]
Abstract
Interest in biosensing platforms using protein fluorescent gold nanoclusters (FGNCs) has grown significantly in the past due to the unique optical properties they offer. This study investigates the interaction of metal ions with FGNCs, and the structural modifications brought about by the interaction resulting in fluorescence changes of the cluster and its successful application in the detection of two heavy metals, cobalt and cadmium. The binding of cobalt and cadmium to FGNCs synthesized from BSA significantly altered the secondary structure of the protein, causing a change in its hydrophobicity. It also resulted in a change in fluorescence properties of FGNCs by intersystem crossing (ICT) and fluorescence resonance energy transfer (FRET). Cobalt and cadmium could successfully be detected in the range of 5-165 ng/mL (R2 = 0.95) and 20-1000 ng/ mL (R2 = 0.91), respectively, with appreciable sensitivity. The principle was also applied for the detection of Vitamin B12 in commercially available ampoules, validating the proposed method. Graphical Abstract Proposed detection method of cadmium and cobalt using FGNCs.
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Affiliation(s)
- Uchangi Satyaprasad Akshath
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
- Microbiology & Fermentation Technology Department, Central Food Technological Research Institute, Mysore, 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
- Microbiology & Fermentation Technology Department, Central Food Technological Research Institute, Mysore, 570020, India.
| | - Sridevi Annapurna Singh
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
- Department of Protein Chemistry & Technology, CSIR- Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India
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43
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Binding Constants of Substituted Benzoic Acids with Bovine Serum Albumin. Pharmaceuticals (Basel) 2020; 13:ph13020030. [PMID: 32093316 PMCID: PMC7169394 DOI: 10.3390/ph13020030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/14/2020] [Accepted: 02/19/2020] [Indexed: 11/17/2022] Open
Abstract
Experimental data on the affinity of various substances to albumin are essential for the development of empirical models to predict plasma binding of drug candidates. Binding of 24 substituted benzoic acid anions to bovine serum albumin was studied using spectrofluorimetric titration. The equilibrium constants of binding at 298 K were determined according to 1:1 complex formation model. The relationships between the ligand structure and albumin affinity are analyzed. The binding constant values for m- and p-monosubstituted acids show a good correlation with the Hammett constants of substituents. Two- and three-parameter quantitative structure–activity relationship (QSAR) models with theoretical molecular descriptors are able to satisfactorily describe the obtained values for the whole set of acids. It is shown that the electron-density distribution in the aromatic ring exerts crucial influence on the albumin affinity.
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44
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Moriyama Y, Takeda K. Removal of Dodecyl Sulfate Ions Bound to Human and Bovine Serum Albumins Using Sodium Cholate. J Oleo Sci 2020; 69:65-72. [PMID: 31902896 DOI: 10.5650/jos.ess19224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The secondary structures of human serum albumin (HSA) and bovine serum albumin (BSA) were disrupted in the solution of sodium dodecyl sulfate (SDS), while being hardly damaged in the solution of the bile salt, sodium cholate (NaCho). In the present work, the removal of dodecyl sulfate (DS) ions bound to these proteins was attempted by adding various amounts of NaCho. The extent of removal was estimated by the restoration of α-helical structure of each protein disrupted by SDS. Increases and decreases in α-helical structure were examined using the mean residue ellipticity at 222 nm, [θ]222, which was frequently used as a measure of α-helical structure content. The magnitudes of [θ]222 of HSA and BSA, weakened by SDS, were restrengthened upon the addition of NaCho. This indicated that the α-helical structures of HSA and BSA that were disrupted by the binding of DS ions were nearly reformed by the addition of NaCho. The NaCho concentration at which the maximum restoration of [θ]222 of each protein was attained increased nearly linearly with SDS concentration. These results indicated that most of the bound DS ions were removed from the proteins but the removal was incomplete. The removal of DS ions, examined by means of the equilibrium dialysis, was also incomplete. The α-helical structure restoration and the DS ion removal by NaCho were considered to be due to the ability of cholate anions to strip the surfactant ions bound to HSA and BSA. These stripped DS ions appeared to be more likely to form SDS-NaCho mixed micelles in bulk rather than SDS-NaCho mixed aggregates on the proteins.
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Affiliation(s)
- Yoshiko Moriyama
- Department of Applied Chemistry and Biotechnology, Okayama University of Science
| | - Kunio Takeda
- Department of Applied Chemistry and Biotechnology, Okayama University of Science
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45
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UV/Vis and fluorescence study on the interaction of Ni(II) complex of Schiff base of glycine and chiral auxiliary (S)-2-[N-(N′-benzylprolyl)amino]benzophenone with bovine serum albumin. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-019-02527-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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46
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Nandi R, Yucknovsky A, Mazo MM, Amdursky N. Exploring the inner environment of protein hydrogels with fluorescence spectroscopy towards understanding their drug delivery capabilities. J Mater Chem B 2020; 8:6964-6974. [DOI: 10.1039/d0tb00818d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Time-resolved fluorescence have used to explore the inner surface and solvation dynamics within protein hydrogels assisting in rationalizing their drug binding and release capabilities.
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Affiliation(s)
- Ramesh Nandi
- Schulich Faculty of Chemistry
- Technion Israel Institute of Technology
- Haifa-3200003
- Israel
| | - Anna Yucknovsky
- Schulich Faculty of Chemistry
- Technion Israel Institute of Technology
- Haifa-3200003
- Israel
| | - Manuel M. Mazo
- Cell Therapy Area
- Clinica Universidad de Navarra, and Regenerative Medicine Program
- Cima Universidad de Navarra
- Pamplona
- Spain
| | - Nadav Amdursky
- Schulich Faculty of Chemistry
- Technion Israel Institute of Technology
- Haifa-3200003
- Israel
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47
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Abas E, Pena-Martinez R, Aguirre-Ramírez D, Rodriguez-Dieguez A, Laguna M, Grasa L. New selective thiolate gold(i) complexes inhibit the proliferation of different human cancer cells and induce apoptosis in primary cultures of mouse colon tumors. Dalton Trans 2020; 49:1915-1927. [DOI: 10.1039/c9dt04423j] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
New thiolate gold(i) complexes with P(NMe2)3 (HMPT) as phosphane group have been developed as proapoptotic and selective anticancer drugs.
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Affiliation(s)
- Elisa Abas
- Instituto de Síntesis Química y Catálisis Homogénea
- Universidad de Zaragoza-CSIC
- Zaragoza
- Spain
| | - Raquel Pena-Martinez
- Instituto de Síntesis Química y Catálisis Homogénea
- Universidad de Zaragoza-CSIC
- Zaragoza
- Spain
| | - Diego Aguirre-Ramírez
- Dpto. Farmacología y Fisiología
- Facultad de Veterinaria
- Universidad de Zaragoza
- Zaragoza
- Spain
| | | | - Mariano Laguna
- Instituto de Síntesis Química y Catálisis Homogénea
- Universidad de Zaragoza-CSIC
- Zaragoza
- Spain
| | - Laura Grasa
- Dpto. Farmacología y Fisiología
- Facultad de Veterinaria
- Universidad de Zaragoza
- Zaragoza
- Spain
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48
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Wagay TA, Ismail K, Askari H. Assessment of the aggregation and adsorption behavior of newly synthesized tetradecylpyridinium-based metallosurfactants and their interaction with bovine serum albumin. NEW J CHEM 2020. [DOI: 10.1039/d0nj02169e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Tetradecylpyridinium (TP) based metallosurfactants, TP2[MCl4] (M = Mn, Co, Ni, Cu, Zn): synthesis, aggregation behavior and interaction with bovine serum albumin.
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Affiliation(s)
- Tariq Ahmad Wagay
- Department of Chemistry
- North-Eastern Hill University
- NEHU Campus
- Shillong – 793022
- India
| | - K. Ismail
- Department of Chemistry
- North-Eastern Hill University
- NEHU Campus
- Shillong – 793022
- India
| | - Hassan Askari
- Department of Chemistry
- North-Eastern Hill University
- NEHU Campus
- Shillong – 793022
- India
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49
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Phopin K, Ruankham W, Prachayasittikul S, Prachayasittikul V, Tantimongcolwat T. Insight into the Molecular Interaction of Cloxyquin (5-chloro-8-hydroxyquinoline) with Bovine Serum Albumin: Biophysical Analysis and Computational Simulation. Int J Mol Sci 2019; 21:E249. [PMID: 31905871 PMCID: PMC6981711 DOI: 10.3390/ijms21010249] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/24/2019] [Accepted: 12/26/2019] [Indexed: 12/21/2022] Open
Abstract
Cloxyquin is a potential therapeutic compound possessing various bioactivities, especially antibacterial, antifungal, cardioprotective, and pain relief activities. Herein, the interaction mechanism between cloxyquin and bovine serum albumin (BSA) has been elucidated in order to fulfill its pharmacokinetic and pharmacodynamic gaps essential for further development as a therapeutic drug. Multi-spectroscopic and biophysical model analysis suggested that cloxyquin interacts with BSA via a static process by ground-state complex formation. Its binding behavior emerged as a biphasic fashion with a moderate binding constant at the level of 104 M-1. Thermodynamic analysis and molecular docking simulation concurrently revealed that hydrophobic interaction is a major driving force for BSA-cloxyquin complexation. Binding of cloxyquin tends to slightly enlarge the monomeric size of BSA without a significant increase of aggregate fraction. Cloxyquin preferentially binds into the fatty acid binding site 5 (FA5) of the BSA via hydrophobic interaction amongst its quinoline scaffold and Phe550, Leu531, and Leu574 residues of BSA. The quinoline ring and hydroxyl moiety of cloxyquin also form the π-π interaction and the hydrogen bond with Phe506. Our data indicate a potential function of serum albumin as a carrier of cloxyquin in blood circulation.
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Affiliation(s)
- Kamonrat Phopin
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Waralee Ruankham
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Supaluk Prachayasittikul
- Center of Data Mining and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Virapong Prachayasittikul
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Tanawut Tantimongcolwat
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
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Mohamadi M, Rezaei A, Ebrahimipour SY, Falahati‐pour SK, Mohamadizadeh F, Bemani M, Hajizadeh MR, Mirzaei MR, Khoshdel A, Mahmoodi M. In‐silico
and
In‐vitro
Studies on the DNA/BSA‐Binding Features of a Mixed Ligand Copper (II) Complex Containing 2‐Methyl Imidazole and a Schiff Base Ligand. ChemistrySelect 2019. [DOI: 10.1002/slct.201904120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Maryam Mohamadi
- Pistachio Safety Research CenterRafsanjan University of Medical Sciences, Rafsanjan Iran
| | - Azadeh Rezaei
- Department of Clinical BiochemistryFaculty of MedicineRafsanjan University of Medical Sciences, Rafsanjan Iran
- Molecular Medicine Research CenterRafsanjan University of Medical Sciences, Rafsanjan Iran
| | - S. Yousef Ebrahimipour
- Department of ChemistryFaculty of ScienceShahid Bahonar University of Kerman, Kerman Iran
| | | | - Fatemeh Mohamadizadeh
- Department of Clinical BiochemistryFaculty of MedicineRafsanjan University of Medical Sciences, Rafsanjan Iran
- Molecular Medicine Research CenterRafsanjan University of Medical Sciences, Rafsanjan Iran
| | - Mahdeih Bemani
- Department of Clinical BiochemistryFaculty of MedicineRafsanjan University of Medical Sciences, Rafsanjan Iran
- Molecular Medicine Research CenterRafsanjan University of Medical Sciences, Rafsanjan Iran
| | - Mohammad Reza Hajizadeh
- Department of Clinical BiochemistryFaculty of MedicineRafsanjan University of Medical Sciences, Rafsanjan Iran
- Molecular Medicine Research CenterRafsanjan University of Medical Sciences, Rafsanjan Iran
| | - Mohammad Reza Mirzaei
- Department of Clinical BiochemistryFaculty of MedicineRafsanjan University of Medical Sciences, Rafsanjan Iran
- Molecular Medicine Research CenterRafsanjan University of Medical Sciences, Rafsanjan Iran
| | - Alireza Khoshdel
- Pistachio Safety Research CenterRafsanjan University of Medical Sciences, Rafsanjan Iran
- Department of Clinical BiochemistryFaculty of MedicineRafsanjan University of Medical Sciences, Rafsanjan Iran
| | - Mehdi Mahmoodi
- Molecular Medicine Research CenterRafsanjan University of Medical Sciences, Rafsanjan Iran
- Department of Clinical BiochemistryAfzalipoor Faculty of Medicine, Kerman University of Medical Sciences, Kerman Iran
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