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Carvalho SF, Custódio MH, Pereiro AB, Araújo JMM. Towards Enhanced Tunability of Aqueous Biphasic Systems: Furthering the Grasp of Fluorinated Ionic Liquids in the Purification of Proteins. Int J Mol Sci 2024; 25:5766. [PMID: 38891953 PMCID: PMC11172314 DOI: 10.3390/ijms25115766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/11/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
This work unfolds functionalized ABSs composed of FILs ([C2C1Im][C4F9SO3] and [N1112(OH)][C4F9SO3]), mere fluoro-containing ILs ([C2C1Im][CF3SO3] and [C4C1Im][CF3SO3]), known globular protein stabilizers (sucrose and [N1112(OH)][C4F9SO3]), low-molecular-weight carbohydrate (glucose), and even high-charge density salt (K3PO4). The ternary phase diagrams were determined, stressing that FILs highly increased the ability for ABS formation. The functionalized ABSs (FILs vs. mere fluoro-containing ILs) were used to extract lysozyme (Lys). The ABSs' biphasic regions were screened in terms of protein biocompatibility, analyzing the impact of ABS phase-forming components in Lys by UV-VIS spectrophotometry, CD spectroscopy, fluorescence spectroscopy, DSC, and enzyme assay. Lys partition behavior was characterized in terms of extraction efficiency (% EE). The structure, stability, and function of Lys were maintained or improved throughout the extraction step, as evaluated by CD spectroscopy, DSC, enzyme assay, and SDS-PAGE. Overall, FIL-based ABSs are more versatile and amenable to being tuned by the adequate choice of the phase-forming components and selecting the enriched phase. Binding studies between Lys and ABS phase-forming components were attained by MST, demonstrating the strong interaction between Lys and FILs aggregates. Two of the FIL-based ABSs (30 %wt [C2C1Im][C4F9SO3] + 2 %wt K3PO4 and 30 %wt [C2C1Im][C4F9SO3] + 25 %wt sucrose) allowed the simultaneous purification of Lys and BSA in a single ABS extraction step with high yield (extraction efficiency up to 100%) for both proteins. The purity of both recovered proteins was validated by SDS-PAGE analysis. Even with a high-charge density salt, the FIL-based ABSs developed in this work seem more amenable to be tuned. Lys and BSA were purified through selective partition to opposite phases in a single FIL-based ABS extraction step. FIL-based ABSs are proposed as an improved extraction step for proteins, based on their biocompatibility, customizable properties, and selectivity.
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Affiliation(s)
| | | | | | - João M. M. Araújo
- LAQV, REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (S.F.C.); (M.H.C.); (A.B.P.)
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2
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Kumar B, Bhatta A, Saraf P, Pandurang TP, Rangan K, Sarkar M, Mitra S, Kumar D. BODIPY(aryl)iodonium salts in the efficient synthesis of diversely functionalized BODIPYs and selective detection of serum albumin. Org Biomol Chem 2024; 22:3405-3414. [PMID: 38587475 DOI: 10.1039/d4ob00336e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
BODIPY(aryl)iodonium salts were readily accessible from the high-yielding reaction of BODIPY with iodoarenes or hydroxyl(tosyloxy)iodoarenes in the presence of m-CPBA. The prepared BODIPY(aryl)iodonium salts bearing substituents of varied electronic nature were utilized for the direct syntheses of thiocyanate, azide, amine and acrylate functionalized BODIPYs and β,β'-bis-BODIPYs. The regioselective syntheses of α-piperidinyl and β-piperidinyl substituted BODIPYs were achieved through the reaction of BODIPY(aryl)iodonium salts with piperidine in the absence and presence of copper(I). Expeditious and high yielding (79-82%) synthesis of β,β'-bis-BODIPYs was also developed through the palladium-catalyzed reductive coupling of the easily accessible BODIPY(aryl)iodonium salts. Some of the indole-appended BODIPYs and bis-BODIPYs displayed strong absorption in the visible region (∼610 nm). The BODIPY(aryl)iodonium salts also showed significant binding with serum albumin and were observed to be selective serum protein sensors with estimated limits of detection as low as 7 μg mL-1 in some cases.
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Affiliation(s)
- Bintu Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-333 031, India.
| | - Anindita Bhatta
- Department of Chemistry, North-Eastern Hill University, Shillong-793022, India.
| | - Prakriti Saraf
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-333 031, India.
| | - Taur Prakash Pandurang
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-333 031, India.
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus-500 078, India
| | - Madhushree Sarkar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-333 031, India.
| | - Sivaprasad Mitra
- Department of Chemistry, North-Eastern Hill University, Shillong-793022, India.
| | - Dalip Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-333 031, India.
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Bhatta A, Upadhyaya J, Chamlagai D, Dkhar L, Phanrang PT, Rao Kollipara M, Mitra S. Exploring the impact of novel thiazole-pyrazole fused benzo-coumarin derivatives on human serum albumin: Synthesis, photophysical properties, anti-cholinergic activity, and interaction studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123669. [PMID: 38006865 DOI: 10.1016/j.saa.2023.123669] [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: 09/08/2023] [Revised: 11/18/2023] [Accepted: 11/18/2023] [Indexed: 11/27/2023]
Abstract
Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were successfully synthesized and characterized, followed by a comprehensive spectroscopic investigation on various photophysical properties in different media. The multipronged approach using steady state and time resolved fluorescence spectroscopy pointed out the impact of substitution in the estimated spectroscopic and other physicochemical properties of the systems. Further, the evaluation of anti-acetylcholinesterase (anti-AChE) activity yielded significant insight into the therapeutic potential of the synthesized coumarinyl compounds for the treatment of Alzheimer's disease (AD). The findings revealed a non-competitive mode of inhibition mechanism, with an estimated IC50 value of 67.72 ± 2.00 nM observed for one of the investigated systems as AChE inhibitor. Notably, this value is even lower than that of an FDA-approved AD drug Donepezil (DON), indicating the enhanced potency of the coumarin derivatives in inhibiting AChE. Interestingly, significant diminution in inhibition was observed in presence of human serum albumin (HSA) as evidenced by the relative increase in IC50 value by 8 ∼ 39 % in different cases, which emphasized the role of albumin proteins to control therapeutic efficacies of potential medications. In-depth spectroscopic and in-silico analysis quantified the nature of interactions of the investigated systems with HSA and AChE. Overall, the outcomes of this study provide significant understanding into the biophysical characteristics of novel thiazole-pyrazole fused benzo-coumarin systems, which could aid in the development of new cholinergic agents for the treatment of AD and materials based on coumarin motifs.
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Affiliation(s)
- Anindita Bhatta
- Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - Jahnabi Upadhyaya
- Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - Dipak Chamlagai
- Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - Lincoln Dkhar
- Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | | | - Mohan Rao Kollipara
- Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - Sivaprasad Mitra
- Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India.
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Carvalho SF, Pereiro AB, Araújo JMM. Simultaneous Purification of Human Interferon Alpha-2b and Serum Albumin Using Bioprivileged Fluorinated Ionic Liquid-Based Aqueous Biphasic Systems. Int J Mol Sci 2024; 25:2751. [PMID: 38473998 DOI: 10.3390/ijms25052751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Interferon alpha-2b (IFN-α2b) is an essential cytokine widely used in the treatment of chronic hepatitis C and hairy cell leukemia, and serum albumin is the most abundant plasma protein with numerous physiological functions. Effective single-step aqueous biphasic system (ABS) extraction for the simultaneous purification of IFN-α2b and BSA (serum albumin protein) was developed in this work. Effects of the ionic liquid (IL)-based ABS functionalization, fluorinated ILs (FILs; [C2C1Im][C4F9SO3] and [N1112(OH)][C4F9SO3]) vs. mere fluoro-containing IL ([C4C1Im][CF3SO3]), in combination with sucrose or [N1112(OH)][H2PO4] (well-known globular protein stabilizers), or high-charge-density salt K3PO4 were investigated. The effects of phase pH, phase water content (%wt), phase composition (%wt), and phase volume ratio were investigated. The phase pH was found to have a significant effect on IFN-α2b and BSA partition. Experimental results show that simultaneous single-step purification was achieved with a high yield (extraction efficiency up to 100%) for both proteins and a purification factor of IFN-α2b high in the enriched IFN-α2b phase (up to 23.22) and low in the BSA-enriched phase (down to 0.00). SDS-PAGE analysis confirmed the purity of both recovered proteins. The stability and structure of IFN-α2b and BSA were preserved or even improved (FIL-rich phase) during the purification step, as evaluated by CD spectroscopy and DSC. Binding studies of IFN-α2b and BSA with the ABS phase-forming components were assessed by MST, showing the strong interaction between FILs aggregates and both proteins. In view of their biocompatibility, customizable properties, and selectivity, FIL-based ABSs are suggested as an improved purification step that could facilitate the development of biologics.
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Affiliation(s)
- Sara F Carvalho
- LAQV, REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Ana B Pereiro
- LAQV, REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - João M M Araújo
- LAQV, REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
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Li Y, Ma Y, Mu C, Gu J, Li Z. Simultaneous binding characterization of different chromium speciation to serum albumin. Biometals 2024; 37:101-113. [PMID: 37610601 DOI: 10.1007/s10534-023-00531-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 08/11/2023] [Indexed: 08/24/2023]
Abstract
The binding process between three species of chromium and serum albumin (SA) was investigated, as well as the interaction between K2Cr2O7 and bovine serum albumin (BSA) under coexistence of different chromium forms. CrCl3, K2Cr2O7 and Crpic bound to SA spontaneously through Van der Waals force, and their binding constants were 103-104 M-1 at 298 K, respectively. K2Cr2O7 and Crpic both had strong binding affinity for BSA, and significantly affected the secondary structure of BSA and the microenvironment surrounding amino acid residues. Chromium exhibited a greater fluorescence quenching constant towards HSA than toward BSA, and K2Cr2O7 induced greater conformational changes in human serum albumin (HSA) than in BSA. A weak binding of CrCl3 to BSA had no significant effect on the binding affinity of K2Cr2O7 to BSA. K2Cr2O7 and BSA have a greater binding affinity when coexisting with Crpic, and K2Cr2O7 induces a greater conformational change in BSA.
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Affiliation(s)
- Ye Li
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China
| | - Yanxuan Ma
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China
| | - Chunyu Mu
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China
| | - Jiali Gu
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China.
| | - Zimu Li
- College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou, 121013, Liaoning, People's Republic of China
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6
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Li Y, Liu H, Mu C, Gu J, Li C. Probing the interaction between encapsulated ethoxyquin and its β-cyclodextrin inclusion complex with bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123259. [PMID: 37634329 DOI: 10.1016/j.saa.2023.123259] [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: 05/25/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/29/2023]
Abstract
Ethoxyquin (EQ) is a synthetic antioxidant that is derived from quinolines and found in many meat products. EQ is strictly regulated in feed due to its potential health implications. An investigation of the interaction mechanism between EQ and transporter protein before and after β-cyclodextrin (β-CD) encapsulation was conducted with the use of multi-spectroscopy, cyclic voltammetry, and molecular docking. EQ formed complexes with bovine serum albumin (BSA), and affected secondary structure and microenvironment polarity of BSA. However, at 298 K, EQ's fluorescence quenching constants decreased from (9.81 ± 0.05) × 103 L mol-1 to (4.94 ± 0.09) × 103 L mol-1, binding constants decreased from (10.28 ± 0.02) × 103 L mol-1 to (2.08 ± 0.07) × 103 L mol-1, after encapsulation in β-CD as well as the binding distance increased. β-CD contains part of EQ in its hydrophobic cavity, inhibiting its binding to BSA. β-CD inclusion complex prevented adverse effects of EQ on BSA conformation. However, β-CD encapsulation had no effect on EQ's antioxidant activity.
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Affiliation(s)
- Ye Li
- College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, PR China
| | - Hongrui Liu
- College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, PR China
| | - Chunyu Mu
- College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, PR China
| | - Jiali Gu
- College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, PR China.
| | - Chun Li
- College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, PR China
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7
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Bhuiyan HA, Anis-Ul-Haque KM, Joy MTR, Rana S, Khan JM, Kumar D, Rehman MT, Goni MA, Hoque MA, Kabir SE. Aggregation phenomena and physico-chemical properties of tetradecyltrimethylammonium bromide and protein (bovine serum albumin) mixture: Influence of electrolytes and temperature. Int J Biol Macromol 2023; 253:127101. [PMID: 37769770 DOI: 10.1016/j.ijbiomac.2023.127101] [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: 08/28/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
It is important for biological, pharmaceutical, and cosmetic industries to understand how proteins and surfactants interact. Herein, the interaction of bovine serum albumin (BSA) with tetradecyltrimethylammonium bromide (TTAB) in different inorganic salts (KCl, K2SO4, K3PO4.H2O) has been explored through the conductivity measurement method at different temperatures (300.55 to 325.55 K) with a specific salt concentration and at a fixed temperature (310.55 K) using different salts concentrations. The extent of micelle ionization (α) and different thermodynamic parameters associated with BSA and TTAB mixtures in salt solutions were calculated. Evaluation of the magnitudes of ∆Hm0 and ∆Sm0 showed that the association was exothermic and primarily an enthalpy-operated process in all cases at lower contents of BSA, but the system became endothermic, and entropy driven in the presence of K3PO4.H2O at a relatively higher concentration of BSA. The enthalpy-entropy compensation variables were determined, which explained the types and nature of interactions between TTAB and BSA in salt media. Molecular docking analysis revealed that the main stabilizing factors in the BSA-TTAB complex are electrostatic and hydrophobic interactions. These findings aligned with the significant results obtained from the conductometry method regarding the nature and characteristics of binding forces observed between BSA and TTAB.
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Affiliation(s)
| | - K M Anis-Ul-Haque
- Department of Chemistry, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Md Tuhinur R Joy
- Department of Chemistry, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Shahed Rana
- Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Javed Masood Khan
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Dileep Kumar
- Laboratory for Chemical Computation and Modeling, Institute for Computational Science and Artificial Intelligence, Van Lang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, Viet Nam.
| | - Md Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Md Abdul Goni
- Department of Biological and Physical Sciences, South Carolina State University, Orangeburg, SC 29117, USA
| | - Md Anamul Hoque
- Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Shariff E Kabir
- Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh; Department of Chemistry, Jagannath University, Dhaka 1100, Bangladesh
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8
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Eslami Moghadam M, Tavakoli Hafshajani K, Sohrabi N, Rezaeisadat M, Oftadeh M. Platinum (II) complex of isopentyl glycine ligand: DNA binding, molecular dynamic, and anticancer activity against breast cancer. J Biomol Struct Dyn 2023:1-13. [PMID: 37578043 DOI: 10.1080/07391102.2023.2246564] [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: 03/30/2023] [Accepted: 07/29/2023] [Indexed: 08/15/2023]
Abstract
In this paper, we performed thorough experimental and theoretical calculations to examine the interaction between Pt derivative, as an anticancer, and ct-DNA. The mode of DNA binding with [Pt(NH3)2(Isopentylgly)]NO3, where Isopentylgly is Isopentyl glycine, was evaluated by various spectroscopic methods, docking, and molecular dynamics simulation studies. UV-Vis and fluorescence spectroscopic titration results and CD spectra of DNA-drug showed this interaction is via groove binding. Also, thermal stability studies or DNA melting temperature changes (ΔTm), as well as the quenching emissions monitoring proved it. Also, the thermodynamic parameter and binding constant displayed that complex-DNA formation is a spontaneous process, and H-binding and also groove binding were found to be the main forces. Theoretical studies stated [Pt(NH3)2(Isopentylgly)]NO3-DNA formation occurs on C-G center on DNA, along with rising DNA-compound stability. IC50 value against the human breast cell line probably is due to the Isopentyl glycine ligand in the structure of the Pt compound, and it was obtained more than cisplatin and less than carboplatin against the MCF7 cell.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | | | - Nasrin Sohrabi
- Department of Chemistry, Payame Noor University (PNU), Tehran, Iran
| | | | - Mohsen Oftadeh
- Department of Chemistry, Payame Noor University (PNU), Tehran, Iran
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9
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Tavakoli Hafshajani K, Sohrabi N, Eslami Moghadam M, Oftadeh M. Spectroscopy and molecular dynamic study of the interaction of calf thymus DNA by anticancer Pt complex with butyl glycine ligand. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 299:122826. [PMID: 37216815 DOI: 10.1016/j.saa.2023.122826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 04/29/2023] [Accepted: 05/04/2023] [Indexed: 05/24/2023]
Abstract
Despite the past few decades since the discovery of anticancer drugs, there is still no definitive treatment for its treatment. Cisplatin is a chemotherapy medication used to treat some cancers. In this research, the DNA binding affinity of Pt complex with butyl glycine ligand was studied by various spectroscopy methods and simulation studies. Fluorescence and UV-Vis spectroscopic data showed groove binding in ct-DNA-[Pt(NH3)2(butylgly)]NO3 complex formation by the spontaneous process. The results were also confirmed by small changes in CD spectra and thermal study (Tm), as well as the quenching emission of [Pt(NH3)2(butylgly)]NO3 complex on DNA. Finally, thermodynamic and binding parameters displayed that hydrophobic forces are the main forces. Based on docking simulation, [Pt(NH3)2(butylgly)]NO3 could bind to DNA and via minor groove binding on C-G center on DNA, formed a stable DNA complex.
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Affiliation(s)
| | - Nasrin Sohrabi
- Department of Chemistry, Payame Noor University (PNU), P.O.Box 19395-4697, Tehran, Iran.
| | | | - Mohsen Oftadeh
- Department of Chemistry, Payame Noor University (PNU), P.O.Box 19395-4697, Tehran, Iran
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Physico-chemical parameters of phase separation of the mixture of BSA and triton X 100 in aqueous solutions of monohydroxy compounds. Int J Biol Macromol 2022; 222:181-187. [PMID: 36150566 DOI: 10.1016/j.ijbiomac.2022.09.169] [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: 09/06/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/21/2022]
Abstract
Clouding behavior and thermodynamic properties for the TX 100 + BSA mixture were investigated in aqueous and aq. alcoholic media. In an aqueous environment, the values of cloud point (CP), at which a clear solution becomes cloudy, for TX 100 decreases with augmentation of the concentration of BSA. The reverse result was obtained in the aq. alcoholic media. In this study, we have used ethanol (EtOH), 1-propanol (1-PrOH), and 2-butanol (2-BuOH) as alcohols. The changes of CP values in alcoholic media have been obtained in the following order: CPH2O+EtOH > CPH2O+2-BuOH > CPH2O+1-PrOH. The standard free energy (∆Gco), standard enthalpy (∆Hco), and standard entropy (∆Sco) changes of clouding were derived at CP. The ΔGc0 values of TX 100 + BSA decreases in the aqueous and alcoholic media with increasing the concentration of BSA and alcohol. This process becomes endothermic in the aq. alcoholic media. Different thermodynamic properties of transfer and entropy-enthalpy compensation parameters for the phase partitioning of the TX 100 + BSA mixture have been calculated and assessed properly.
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11
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Rostamnezhad F, Hossein Fatemi M. Exploring the interactions of acenaphthene with bovine serum albumin: Spectroscopic methods, molecular modeling and chemometric approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 263:120164. [PMID: 34274633 DOI: 10.1016/j.saa.2021.120164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 06/06/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
The interaction of acenaphthene (ACN), a widespread environmental pollutant, with bovine serum albumin (BSA) was explored using spectroscopic methods, molecular modeling and chemometric approaches. The multivariate curve resolution-alternating least squares (MCR-ALS) analysis decomposed the overlapped excitation-emission matrix (EEM) spectra of mixture of ACN and BSA successfully and extracted spectral profiles of pure BSA, ACN and BSA-ACN complex. Based on fluorescence quenching analysis, ACN quenched the inherent fluorescence of BSA remarkably via a static mechanism. The obtained value of binding constant (Kb = 3.82 × 105 L mol-1) revealed a high binding affinity of ACN to BSA which facilitates its distribution by blood circulation system. Furthermore, the binding parameters values revealed that one binding site in BSA was involved in BSA-ACN complex. FT-IR, UV-Vis and CD spectra showed that the conformation of BSA was altered in presence of ACN slightly. Molecular docking simulation suggested that ACN was located in the IA region of BSA and the main interactions between ACN and BSA, are van der Waals forces. The obtained results provide some insight into interactions between ACN and serum albumins at the molecular level.
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Affiliation(s)
- Fatemeh Rostamnezhad
- Laboratory of Chemometrics, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
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12
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Kadaf Manea Y, Banu A, Qashqoosh MT, Mumtaz Khan A, Alahdal FM, Ahmad Wani A, Salem MA, Naqvi S. Interaction of AMOT@CS NPs and AMOT drug with bovine serum albumin: Insights from spectroscopic and molecular docking techniques. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Raoufi A, Ebrahimi M, Bozorgmehr MR. Determination of Thermodynamics Constant of Interaction among of Atenolol and Metoprolol with Human Serum Albumin: Spectroscopic and Molecular Modeling Approaches. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421140181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Kou SB, Zhou KL, Lin ZY, Lou YY, Shi JH, Liu YX. Insights into the binding properties of calf thymus DNA with lopinavir from spectroscopic and computational studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115491] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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15
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Alves MM, Araújo JM, Martins IC, Pereiro AB, Archer M. Insights into the interaction of Bovine Serum Albumin with Surface-Active Ionic Liquids in aqueous solution. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114537] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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16
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Yasmeen S, Riyazuddeen, Khatun S, Abul Qais F. Characterization of interactions between cromolyn sodium and bovine serum albumin by spectroscopic, calorimetric and computational methods. J Biomol Struct Dyn 2019; 38:722-732. [DOI: 10.1080/07391102.2019.1586588] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Shama Yasmeen
- Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Riyazuddeen
- Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Samima Khatun
- Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Faizan Abul Qais
- Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh, India
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17
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Precupas A, Leonties AR, Neacsu A, Sandu R, Popa VT. Gallic acid influence on bovine serum albumin thermal stability. NEW J CHEM 2019. [DOI: 10.1039/c9nj00115h] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A thermoanalytical approach reveals the dual action of GA on BSA thermal stability.
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Affiliation(s)
- Aurica Precupas
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy
- 060021 – Bucharest
- Romania
| | - Anca Ruxandra Leonties
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy
- 060021 – Bucharest
- Romania
| | - Andreea Neacsu
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy
- 060021 – Bucharest
- Romania
| | - Romica Sandu
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy
- 060021 – Bucharest
- Romania
| | - Vlad Tudor Popa
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy
- 060021 – Bucharest
- Romania
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18
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Wong CY, Martinez J, Al-Salami H, Dass CR. Quantification of BSA-loaded chitosan/oligonucleotide nanoparticles using reverse-phase high-performance liquid chromatography. Anal Bioanal Chem 2018; 410:6991-7006. [PMID: 30206665 DOI: 10.1007/s00216-018-1319-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 07/30/2018] [Accepted: 08/10/2018] [Indexed: 12/25/2022]
Abstract
Therapeutic proteins are administered subcutaneously because of their instability in the gastrointestinal tract. Current research suggests that polymeric-based nanoparticles, microparticles and liposomes are ideal nanocarriers to encapsulate proteins for disease management. In order to develop a successful drug delivery system, it is crucial to determine drug release profile and stability. However, the non-active excipients in polymeric formulations can influence the quantification of proteins in analytical techniques. This study investigated the effect of nine common polymers on quantification of bovine serum albumin (BSA) using RP-HPLC method. The technique offers advantages such as short analytical time, high accuracy and selectivity. In the meantime, the technique can be employed to separate proteins including BSA, insulin and pigment epithelium-derived factor (PEDF). Furthermore, the RP-HPLC method was applied to quantify the drug release pattern of a novel BSA-loaded nanoparticulate formulation in simulated gastric and intestinal fluids. The nanoparticles were formulated by natural polymer (chitosan) and oligonucleotide (Dz13Scr) using complex coacervation. The prepared particles were found to have small size (337.87 nm), low polydispersity index (0.338) and be positively charged (10.23 mV). The in vitro drug release patterns were characterised using the validated RP-HPLC method over 12 h. Graphical abstract ᅟ.
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Affiliation(s)
- Chun Y Wong
- School of Pharmacy and Biomedical Science, Curtin University, Bentley, 6102, Australia.,Curtin Health Innovation Research Institute, Bentley, 6102, Australia
| | - Jorge Martinez
- School of Pharmacy and Biomedical Science, Curtin University, Bentley, 6102, Australia
| | - Hani Al-Salami
- School of Pharmacy and Biomedical Science, Curtin University, Bentley, 6102, Australia.,Curtin Health Innovation Research Institute, Bentley, 6102, Australia.,Biotechnology and Drug Development Research Laboratory, Curtin Health Innovation Research Institute, Bentley, 6102, Australia
| | - Crispin R Dass
- School of Pharmacy and Biomedical Science, Curtin University, Bentley, 6102, Australia. .,Curtin Health Innovation Research Institute, Bentley, 6102, Australia.
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19
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Kaur A, Khan IA, Banipal PK, Banipal TS. Deciphering the complexation process of a fluoroquinolone antibiotic, levofloxacin, with bovine serum albumin in the presence of additives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:259-270. [PMID: 29045929 DOI: 10.1016/j.saa.2017.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 10/04/2017] [Accepted: 10/08/2017] [Indexed: 06/07/2023]
Abstract
The current work aims to explore the thermodynamic and conformational aspects for the binding of fluoroquinolone antibacterial drug, levofloxacin (LFC), with bovine serum albumin (BSA) using calorimetric, spectroscopic (UV-visible, fluorescence, circular dichroism, and 1H NMR), dynamic light scattering (DLS) and computational methods (molecular docking). The binding of LFC with BSA at two sequential sites with higher affinity (~103M-1) at the first site has been explored by calorimetry whereas the binding at a single site with affinity of the order of ~104M-1 has been observed from fluorescence spectroscopy. The calorimetric study in the presence of additives along with docking analysis reveals the significant role of electrostatic, hydrogen bonding, and hydrophobic interactions in the association process. The slight conformational changes in protein as well as the changes in the water network structure around the binding cavity of protein have been observed from spectroscopic and DLS measurements. The LFC induced quenching of BSA fluorescence was observed to be initiated mainly through the static quenching process and this suggests the formation of ground state LFC-BSA association complex. The stronger interactions of LFC in the cavity of Sudlow site I (subdomain IIA) of protein have been explored from site marker calorimetric and molecular docking study.
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Affiliation(s)
- Amandeep Kaur
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Imran Ahmd Khan
- School of Pharmaceutical Science and Technology,Tianjin University, Tianjin 300072, PR China
| | | | - Tarlok Singh Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
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20
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Xie Y, Zhu X, Li Y, Wang C. Analysis of the pH-Dependent Fe(III) Ion Chelating Activity of Anthocyanin Extracted from Black Soybean [Glycine max (L.) Merr.] Coats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1131-1139. [PMID: 29333856 DOI: 10.1021/acs.jafc.7b04719] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The Fe(III) chelating activity of anthocyanin extracted from black soybean coats was investigated at pH 3.0, 5.0, 6.5, 7.0, and 7.4 with fluorescence spectroscopy and microscale thermophoresis (MST). Cyanidin-3-glucoside (C3G) was determined to be 98% of the total anthocyanin by high-performance liquid chromatography. The binding affinity (Ka) exhibited significant pH-dependent behavior: Ka was 9.7167 × 104, 1.0837 × 104, 1.4284 × 104, 5.4550 × 104, and 3.0269 × 104 M-1 at pH 3.0, 5.0, 6.5, 7.0, and 7.4, respectively (p < 0.05). The MST data showed that ΔG < 0 and ΔH < 0, demonstrating that chelation is spontaneous and exothermic. Because both ΔH and ΔS < 0, the chelation involves hydrogen bonds and/or van der Waals forces for pH 3.0, 5.0, and 6.5. Electrostatic interactions contributed to chelation at pH 7.0 and 7.4 with ΔH < 0 and ΔS > 0. With the formation of chelates, C3G improved the solubility of Fe(III) at pH 6.5, 7.0, and 7.4 to enhance the ferric ion bioavailability, except for aggregation observed at pH 5.0.
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Affiliation(s)
- Yanli Xie
- School of Food Science and Technology, Henan University of Technology , Zhengzhou, Henan 450001, People's Republic of China
| | - Xiaolu Zhu
- School of Food Science and Technology, Henan University of Technology , Zhengzhou, Henan 450001, People's Republic of China
| | - Yuan Li
- School of Food Science and Technology, Henan University of Technology , Zhengzhou, Henan 450001, People's Republic of China
| | - Chen Wang
- School of Food Science and Technology, Henan University of Technology , Zhengzhou, Henan 450001, People's Republic of China
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21
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Ràfols C, Amézqueta S, Fuguet E, Bosch E. Molecular interactions between warfarin and human (HSA) or bovine (BSA) serum albumin evaluated by isothermal titration calorimetry (ITC), fluorescence spectrometry (FS) and frontal analysis capillary electrophoresis (FA/CE). J Pharm Biomed Anal 2018; 150:452-459. [DOI: 10.1016/j.jpba.2017.12.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 12/04/2017] [Accepted: 12/05/2017] [Indexed: 10/18/2022]
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22
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Shi JH, Zhou KL, Lou YY, Pan DQ. Multi-spectroscopic and molecular modeling approaches to elucidate the binding interaction between bovine serum albumin and darunavir, a HIV protease inhibitor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:362-371. [PMID: 28753530 DOI: 10.1016/j.saa.2017.07.040] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/13/2017] [Accepted: 07/20/2017] [Indexed: 06/07/2023]
Abstract
Darunavir (DRV), a second-generation HIV protease inhibitor, is widely used across the world as an important component of HIV therapy. The interaction of DRV with bovine serum albumin (BSA), a major carrier protein, has been studied under simulated physiological conditions (pH7.4) by multi-spectroscopic techniques in combination with molecular modeling. Fluorescence data revealed that the intrinsic fluorescence of BSA was quenched by DRV in terms of a static quenching procedure due to the formation of the DRV-BSA complex. The results indicated the presence of single weak affinity binding site (~103M-1, 310K) on protein. The thermodynamic parameters, namely enthalpy change (ΔH0), entropy change (ΔS0) and Gibbs free energy change (ΔG0) were calculated, which signified that the binding reaction was spontaneous, the main binding forces were hydrogen bonding and van der Waals forces. Importantly, competitive binding experiments with three site probes, phenylbutazone (in sub-domain IIA, site I), ibuprofen (in sub-domain IIIA, site II) and artemether (in the interface between sub-domain IIA and IIB, site II'), suggested that DRV was preferentially bound to the hydrophobic cavity in site II' of BSA, and this finding was validated by the docking results. Additionally, synchronous fluorescence, three-dimensional fluorescence and Resonance Rayleigh Scattering (RRS) spectroscopy gave qualitative information on the conformational changes of BSA upon adding DRV, while quantitative data were obtained with Fourier transform infrared spectroscopy (FT-IR).
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Affiliation(s)
- Jie-Hua Shi
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Kai-Li Zhou
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yan-Yue Lou
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Dong-Qi Pan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
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23
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Sudhi G, Rajina SR, Praveen SG, Xavier TS, Kenny PTM, Jaiswal-Nagar D, Binoy J. Investigations of vibrational spectra and bioactivity of novel anticancer drug N-(6-ferrocenyl-2-naphthoyl)-gamma-amino butyric acid ethyl ester. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 185:234-244. [PMID: 28582725 DOI: 10.1016/j.saa.2017.05.056] [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: 12/31/2016] [Revised: 05/24/2017] [Accepted: 05/26/2017] [Indexed: 06/07/2023]
Abstract
The bioactivity of compounds is mainly dependent on molecular structure and the present work aims to explore the bonding features responsible for biological activity of novel anticancer drug N-(6-ferrocenyl-2-naphthoyl)-gamma-amino butyric acid ethyl ester (FNGABEE). In the present study, we investigate the molecular structural properties of newly synthesized title compound through experimental and quantum chemical studies. The detailed vibrational analysis has been performed using FT IR and FT Raman spectrum, aided by DFT computed geometry, vibrational spectrum, Eigen vector distribution and PED, at B3LYP/6-311++G(d,p) level. The resonance structure of naphthalene, different from that of benzene, revealed by molecular structure has been investigated using CC and CC stretching modes. The proton transfer in amide has been analyzed to obtain spectral distinction between different carbonyl and CN groups which point to the reactive sites responsible for binding with DNA and bovine serum albumin (BSA). The spectral distinction between eclipsed and staggered form of ferrocene has been analyzed. The molecular docking of FNGABEE with BSA and DNA has been performed to find the strength of binding and the moieties responsible for the interactions. The experimental binding studies of FNGABEE with BSA and DNA has been performed using UV absorption spectroscopy and fluorometric assay, to find the nature and strength of binding.
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Affiliation(s)
- Geethu Sudhi
- Department of Physics, University of Kerala, Govt. College for Women, Thiruvananthapuram 695014, Kerala, India
| | - S R Rajina
- Department of Physics, University of Kerala, Govt. College for Women, Thiruvananthapuram 695014, Kerala, India
| | - S G Praveen
- School of Physics, Indian Institute of Science Education and Research, Thiruvananthapuram 695016, India
| | - T S Xavier
- Department of Physics, University of Kerala, Govt. College for Women, Thiruvananthapuram 695014, Kerala, India
| | - Peter T M Kenny
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - D Jaiswal-Nagar
- School of Physics, Indian Institute of Science Education and Research, Thiruvananthapuram 695016, India
| | - J Binoy
- Department of Physics, Govt. College for Women, Thiruvananthapuram 695014, Kerala, India.
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24
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Kaur A, Banipal PK, Banipal TS. Local anesthetic-bovine serum albumin interactional behaviour: Characterization by volumetric, calorimetric, and spectroscopic methods. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Pawar SK, Naik RS, Seetharamappa J. Exploring the binding of two potent anticancer drugs bosutinib and imatinib mesylate with bovine serum albumin: spectroscopic and molecular dynamic simulation studies. Anal Bioanal Chem 2017; 409:6325-6335. [DOI: 10.1007/s00216-017-0565-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/12/2017] [Accepted: 08/02/2017] [Indexed: 11/29/2022]
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26
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Kaur A, Banipal PK, Banipal TS. Study on the interactional behaviour of transition metal ions with myoglobin: A detailed calorimetric, spectroscopic and light scattering analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:236-244. [PMID: 27923210 DOI: 10.1016/j.saa.2016.11.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/14/2016] [Accepted: 11/24/2016] [Indexed: 06/06/2023]
Abstract
The energetics and the impact on the conformation of heme containing protein myoglobin (Mb) due to the binding of three transition metal ions (Zn2+, Ni2+, and Mn2+) have been investigated using isothermal titration calorimetry (ITC), dynamic light scattering (DLS), UV-vis, and circular dichroism (CD) spectroscopy under physiological conditions. The binding affinity of the order of 104M-1 has been observed for all metal ions from calorimetry as well as from absorption spectroscopy. The binding of these metal ions with Mb is a spontaneous process that exposes the hydrophobic groups away from the protein core as exhibited by the negative Gibbs free energy change (ΔG) and positive heat capacity change (ΔCp) values. Both light scattering and CD results demonstrates that the binding of Zn2+ and Mn2+ ions with Mb results in the folding whereas Ni2+ ion results in the unfolding of the protein. No direct interactions among the transition metal ions and heme moiety of Mb has been observed from absorption study. The results of these studies reveals that Mn2+ ion influences the biological functions of Mb to a larger extent in spite of its lowest affinity followed by Zn2+ and Ni2+ ions.
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Affiliation(s)
- Amandeep Kaur
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Parampaul K Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Tarlok S Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
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27
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Mohamed Kamel, A. G.*, Faridah, H., Yusof, S., Norazah, A., Nakisah, M. A.. A Case of Non-Contact Lens related Acanthamoeba keratitis in Malaysia. MALAYSIAN JOURNAL OF MICROBIOLOGY 2005; 36:1095-1107. [DOI: 10.1080/07391102.2017.1311805] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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