1
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Banu A, Naqvi S, Qashqoosh MTA, Manea YK. Multispectroscopic and computational study of interaction of the bovine serum albumin with atropine and atropine-loaded chitosan nanoparticles (synthesized and characterized). J Biomol Struct Dyn 2023; 41:11137-11147. [PMID: 37211826 DOI: 10.1080/07391102.2023.2212802] [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: 09/22/2022] [Accepted: 12/12/2022] [Indexed: 05/23/2023]
Abstract
Two different systems of bovine serum albumin (BSA) were used for multiple spectroscopic and computational studies to determine interaction of BSA and atropine (Atrop), that is, BSA-Atrop system and Atrop-loaded chitosan nanoparticles (Atrop@CS NPs), that is, BSA-Atrop@CS NPs system. The study suggests that BSA-Atrop system and BSA-Atrop@CS NPs system involve non-fluorescent complexes of Ksv = 3.2 × 103 Lmol-1 and 3.1 × 104 Lmol-1, kq = 3.2 × 1011 Lmol-1 s-1 and 3.1 × 1012 Lmol-1 s-1, the binding constant Kb = 1.4 × 103 Lmol-1, 2.0 × 102 Lmol-1, respectively, and number of binding sites n ∼ 1 for both the systems. The negligible conformational changes induced in BSA were also observed. Synchronous fluorescence spectroscopic study revealed that more quenching occurred in intrinsic fluorescence of tryptophan (Trp, W) than that in tyrosine residue (Tyr, Y). UV-vis spectroscopic study verified the presence of static quenching from the presence of BSA-Atrop and BSA-Atrop@CS NPs complexes. CD spectra confirmed the conformational changes induced in BSA upon increment of concentrations of Atrop and Atrop@CS NPs separately into the constant concentration of BSA. The coherent observations from various spectroscopic studies were in agreement with those of computational study, showing BSA-Atrop complex formation and other related details. The hydrogen bonds (H-bonds), van der Walls (vdW) interactions and π -type of interactions were mainly involved in stabilization of the formed BSA-Atrop complex.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Afreen Banu
- Chemistry Section, Women's College, Aligarh Muslim University, Aligarh, India
| | - Saeeda Naqvi
- Chemistry Section, Women's College, Aligarh Muslim University, Aligarh, India
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2
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Oso BJ, Olaoye I, Oso OT. Experimental and hypothetical appraisal on inhibition of glucose-induced glycation of bovine serum albumin by quercetin. J Genet Eng Biotechnol 2023; 21:123. [PMID: 37971629 PMCID: PMC10654330 DOI: 10.1186/s43141-023-00588-5] [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: 05/25/2022] [Accepted: 11/06/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND The specificity of protein functions depends on its folding ability into a functional structure. Protein folding is an essential systemic phenomenon that prevents incorrect folding which could result in harmful aggregation. This harmful aggregation of proteins causes neurodegenerative diseases and systemic amyloidosis. Experimental and theoretical approaches were used in this study to explicate the probable mechanisms of action of quercetin in inhibition of glucose-induced glycation through estimations of percentage glycated protein, inhibited induced protein aggregation, and unoxidized bovine serum albumin thiol groups and assessments of molecular interactions of quercetin with the structures of bovine serum albumin, amyloid beta-peptide (1-42) and 3D amyloid-beta (1-42) fibrils retrieved from the protein databank ( http://www.rcsb.org ). RESULTS The results showed quercetin inhibited the formation of glycated protein, protein aggregation, and thiol oxidation in a concentration-dependent manner where 200 μg/ml showed the highest inhibition while 50 μg/ml depicted the least inhibition in all the studied assessments. From the docking analysis, it was observed that quercetin had a significantly higher binding affinities - 8.67 ± 0.09 kcal/mol, - 5.37 ± 0.05 kcal/mol and - 5.93 ± 0.13 kcal/mol for the bovine serum albumin, amyloid beta-peptide (1-42) and 3D amyloid-beta (1-42) fibrils respectively compared to the glucose, the inducer. Quercetin and glucose interacted with amino acid residues at the BSA subdomain IIA thus providing a clue that quercetin may impose its inhibition through the binding domain. Also, it is important to mention that the phytochemicals shared a similar interaction profile as that of glucose with the amyloid-beta. CONCLUSIONS These findings established the beneficial effects of quercetin as a potential agent that could alleviate hyperglycaemic-initiated disorders associated with elevated serum glucose levels.
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Affiliation(s)
- Babatunde Joseph Oso
- Department of Biochemistry, McPherson University, Seriki Sotayo, Ogun State, Nigeria.
| | - Ige Olaoye
- Department of Biochemistry, McPherson University, Seriki Sotayo, Ogun State, Nigeria.
| | - Olufunke Temiloluwa Oso
- Department of Obstetrics and Gynaecology, Ekiti State University Teaching Hospital, Ado-Ekiti, Nigeria
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3
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Biswas S, Hecht AL, Noble SA, Huang Q, Gillilan RE, Xu AY. Understanding the Impacts of Molecular and Macromolecular Crowding Agents on Protein-Polymer Complex Coacervates. Biomacromolecules 2023; 24:4771-4782. [PMID: 37815312 PMCID: PMC10646951 DOI: 10.1021/acs.biomac.3c00545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 09/25/2023] [Indexed: 10/11/2023]
Abstract
Complex coacervation refers to the liquid-liquid phase separation (LLPS) process occurring between charged macromolecules. The study of complex coacervation is of great interest due to its implications in the formation of membraneless organelles (MLOs) in living cells. However, the impacts of the crowded intracellular environment on the behavior and interactions of biomolecules involved in MLO formation are not fully understood. To address this knowledge gap, we investigated the effects of crowding on a model protein-polymer complex coacervate system. Specifically, we examined the influence of sucrose as a molecular crowder and polyethylene glycol (PEG) as a macromolecular crowder. Our results reveal that the presence of crowders led to the formation of larger coacervate droplets that remained stable over a 25-day period. While sucrose had a minimal effect on the physical properties of the coacervates, PEG led to the formation of coacervates with distinct characteristics, including higher density, increased protein and polymer content, and a more compact internal structure. These differences in coacervate properties can be attributed to the effects of crowders on individual macromolecules, such as the conformation of model polymers, and nonspecific interactions among model protein molecules. Moreover, our results show that sucrose and PEG have different partition behaviors: sucrose was present in both the coacervate and dilute phases, while PEG was observed to be excluded from the coacervate phase. Collectively, our findings provide insights into the understanding of crowding effects on complex coacervation, shedding light on the formation and properties of coacervates in the context of MLOs.
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Affiliation(s)
- Shanta Biswas
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Alison L Hecht
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Sadie A Noble
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Qingqiu Huang
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, New York 14853, United States
| | - Richard E Gillilan
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, New York 14853, United States
| | - Amy Y Xu
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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4
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Prakash A, Marwah M, Mehta D, Chaudhuri TK, Ojha H, Agrawala PK. Biophysical studies of the binding of histone deacetylase inhibitor (Trichostatin-A) with bovine serum albumin. J Biomol Struct Dyn 2023:1-9. [PMID: 37578048 DOI: 10.1080/07391102.2023.2246071] [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: 06/21/2023] [Accepted: 07/23/2023] [Indexed: 08/15/2023]
Abstract
Trichostatin A (TSA), a potential radiomitigator in pre-clinical models, inhibits the class I and II mammalian histone deacetylase (HDAC) enzyme family preferentially. In the current study, the ADME assessment of TSA was explored in terms of its binding affinity for serum protein via spectroscopic and molecular docking techniques. Fluorescence spectroscopy was used to examine changes in the protein microenvironment, and affinity was quantified in terms of binding constant and stoichiometry. Post binding conformational changes were observed using circular dichroism (CD) and UV-Visible spectroscopy. Specific binding was visualized using molecular docking to support experimental studies. UV-vis spectra demonstrated a blue shift in the interaction of TSA to BSA. The calculated binding constants ranged from 3.10 to 0.78 x 10 5(M-1) and quenching constants from 2.75 to 2.15 x 104 (l mol-1), indicating TSA has a strong binding affinity for BSA. Based on the FRET theory, the distance between BSA (donor) and TSA (acceptor) was calculated to be 2.83 nm. The Stern-Volmer plot revealed (Ksv) static quenching. Thermodynamic parameters were calculated, and a negative ΔG value showed that the interaction is spontaneous. The CD spectra analysis further revealed a change in the protein's secondary structure, indicating TSA-BSA interaction. The molecular docking studies also indicated strong binding affinity of TSA with BSA. The results indicate that good bio-availability of TSA is possible because of the spontaneous and strong binding affinity with BSA.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Anu Prakash
- Institute of Nuclear Medicine and Allied Sciences, DRDO, New Delhi, India
| | - Mansi Marwah
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, New Delhi, India
| | - Devanshu Mehta
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
| | - Tapan K Chaudhuri
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
| | - Himanshu Ojha
- Institute of Nuclear Medicine and Allied Sciences, DRDO, New Delhi, India
| | - Paban K Agrawala
- Institute of Nuclear Medicine and Allied Sciences, DRDO, New Delhi, India
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5
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Manivel P, Marimuthu P, Ilanchelian M. Deciphering the binding site and mechanism of new methylene blue with serum albumins: A multispectroscopic and computational investigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 300:122900. [PMID: 37244028 DOI: 10.1016/j.saa.2023.122900] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 04/28/2023] [Accepted: 05/17/2023] [Indexed: 05/29/2023]
Abstract
Herein, the interaction mechanism of new methylene blue (NMB) with human serum albumin (HSA) and bovine serum albumin (BSA) was carefully investigated both experimentally and conceptually, employing experimental and insilico analysis. The steady-state emission spectral studies showed that the emission intensity of HSA and BSA was quenched significantly by NMB. The findings of the Stern-Volmer and double logarithmic plot revealed that the observed emission quenching process was through a static quenching mechanism and the measured binding constant values (Kb) for HSA-NMB and BSA-NMB are 2.766 and 1.187 × 105 dm3 mol-1 respectively. The time-resolved fluorescence lifetime measurement and UV-vis absorption investigation further verify the complex formation between NMB and HSA/BSA. The assessment of thermodynamic parameters disclosed the binding process was spontaneous driven by hydrogen bonds (H-bond) and van der Waals interactions, which contributed a significant role in the complexation. Moreover, the secondary structural conformation and microenvironment of HSA/BSA were modified in the presence of NMB, as evidenced by circular dichroism and synchronous fluorescence data. Molecular docking study predicted a plausible binding mode of NMB inside the binding pocket of HSA and BSA. These results demonstrated that the stabilized NMB is found at the Subdomain IIA (site I) of both the proteins and the results were correlated well with the competitive binding assay. Additionally, the principal components analysis revealed less variation of docked poses for HSA, while, more dispersed docked poses were observed for the BSA model. This also highlights the effects of docking towards a modeled protein (BSA). Molecular dynamic (MD) simulation based binding free energy (ΔGmmgbsa) estimation obtained at 298, 303, 308 and 313 K, were in good agreement with our experimental (ΔGbind) values.
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Affiliation(s)
- Perumal Manivel
- Department of Chemistry, Bharathiar University, Coimbatore, Tamil Nadu, India; Bharathiar Cancer Theranostics Research Centre (RUSA-2.0), Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | - Parthiban Marimuthu
- Structural Bioinformatics Laboratory (SBL - Biochemistry) and Pharmaceutical Science Laboratory (PSL - Pharmacy), Faculty of Science and Engineering, Åbo Akademi University, FI-20520 Turku, Finland
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Qureshi MA, Amir M, Khan RH, Musarrat J, Javed S. Glycation reduces the binding dynamics of aflatoxin B 1 to human serum albumin: a comprehensive spectroscopic and computational investigation. J Biomol Struct Dyn 2023; 41:14797-14811. [PMID: 37021366 DOI: 10.1080/07391102.2023.2194000] [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: 01/04/2023] [Accepted: 02/25/2023] [Indexed: 04/07/2023]
Abstract
Aflatoxin B1 (AFB1), a potent mutagen, is synthesized by Aspergillus parasiticus and Aspergillus flavus. Human serum albumin (HSA) is a globular protein with diverse roles. As AFB1 is ingested with food and is transported in the body via blood, it becomes pertinent to comprehend the effect of the binding of this toxin on the structure and conformation of HSA, which may help to get insight into the toxic effect of the exposure of the mycotoxin. In this study, multi-spectroscopic approaches have been used to evaluate the binding efficiency of AFB1 with both the native HSA (nHSA) and the glycated HSA (gHSA). Steady-state fluorescence spectroscopy reveals the static type of fluorescence quenching in the fluorescence emission spectra of nHSA and gHSA in the presence of AFB1. The binding constant (Kb) is calculated to be 6.88 × 104 M-1 for nHSA, while a reduced Kb value of 2.95 × 104 M-1 has been obtained for gHSA. The circular dichroism study confirms the change in the secondary structure of nHSA and gHSA in the presence of AFB1, followed by alterations in the melting temperature (Tm) of nHSA and gHSA. In silico computational findings envisaged the amino acid residues and bonds involved in the binding of nHSA and gHSA with AFB1. The comprehensive study analyzes the binding effectiveness of AFB1 with nHSA and gHSA and shows reduced binding of AFB1 to gHSA.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mohd Aamir Qureshi
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Mohd Amir
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Javed Musarrat
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, India
| | - Saleem Javed
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
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7
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Altwaijry N, Almutairi GS, Khan MS, Alokail MS, Alafaleq N, Ali R. The effect of novel antihypertensive drug valsartan on lysozyme aggregation: A combined in situ and in silico study. Heliyon 2023; 9:e15270. [PMID: 37123968 PMCID: PMC10130856 DOI: 10.1016/j.heliyon.2023.e15270] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 03/10/2023] [Accepted: 03/31/2023] [Indexed: 05/02/2023] Open
Abstract
Protein misfolding can result in amyloid fiber aggregation, which is associated with various types of diseases. Therefore, preventing or treating abnormally folded proteins may provide therapeutic intervention for these diseases. Valsartan (VAL) is an angiotensin II receptor blocker (ARB) that is used to treat hypertension. In this study, we examine the anti-aggregating effect of VAL against hen egg-white lysozyme (HEWL) amyloid fibrils through spectroscopy, docking, and microscopic analysis. In vitro formation of HEWL amyloid fibrils was indicated by increased turbidity, RLS (Rayleigh light scattering), and ThT fluorescence intensity. 10 μM VAL, amyloid/aggregation was inhibited up to 83% and 72% as measured by ThT and RLS respectively. In contrast, 100 μM VAL significantly increases the fibril aggregation of HEWL. CD spectroscopy results show a stabilization of HEWL α-helical structures in the presence of 10 μM VAL while the increase in β-sheet was detected at 100 μM concentration of VAL. The hydrophobicity of HEWL was increased at 100 μM VAL, suggesting the promotion of aggregation via its self-association. Steady-state quenching revealed that VAL and HEWL interact spontaneously via hydrogen bonds and van der Waals forces. Transmission electron microscopy (TEM) images illustrate that the needle-like fibers of HEWL amyloid were reduced at 10 μM VAL, while at 100 μM the fibrils of amyloid were increased. Additionally, our computational studies showed that VAL could bind to two binding sites within HEWL. In the BS-1 domain of HEWL, VAL binds to ASN59, ILE98, ILE58, TRP108, VAL109, SER50, ASP52, ASN59, ALA107, and TRP108 residues with a binding energy of -9.72 kcal mol-1. Also, it binds to GLU7, ALA10, ALA11, CYS6, ARG128, and ARG14 in the BS-2 domain with a binding energy of -5.89 kcal mol-1. VAL, therefore, appears to have dual effect against HEWL aggregation. We suggest that VAL stabilizes HEWL's aggregation-prone region (APR) at 10 μM, preventing aggregation. Also, we assume that at 100 μM, VAL occupies BS-2 beside BS-1 and destabilizes the folding structure of HEWL, resulting in aggregation. Further studies are needed to investigate the mechanism of action and determine its potential side effects.
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Affiliation(s)
- Nojood Altwaijry
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
- Corresponding author.
| | - Ghaliah S. Almutairi
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohd Shahhnawaz Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
- Corresponding author.
| | - Majed S. Alokail
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Nouf Alafaleq
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Rizwan Ali
- King Abdullah International Medial Research Center (KAIMRC), Medical Research Core Facility and Platforms (MRCFP), King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs (MNGHA), Riyadh, 11481, Saudi Arabia
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8
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Janoon K, Kuntip N, Niramitranon J, Pongprayoon P. How ractopamine binds to bovine serum albumin at the drug site 1. MOLECULAR SIMULATION 2023. [DOI: 10.1080/08927022.2023.2178239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Kanokwan Janoon
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Nattapon Kuntip
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Jitti Niramitranon
- Department of Computer Engineering, Faculty of Engineering, Kasetsart University, Bangkok, Thailand
| | - Prapasiri Pongprayoon
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
- Center for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, KU Institute for Advanced Studies, Kasetsart University, Bangkok, Thailand
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9
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Adeleke AA, Islam MS, Omondi B. Silver(I) pyridinyl complexes with benzothiazole, thiophene, and furan moieties: DNA/protein-binding, antibacterial, antioxidant, and anticancer studies. Arch Pharm (Weinheim) 2023; 356:e2200308. [PMID: 36253106 DOI: 10.1002/ardp.202200308] [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: 06/15/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 01/04/2023]
Abstract
We have synthesized and characterized nine Ag(I) complexes of Schiff bases containing thiophene, furan, and pyridine moieties for in vitro antibacterial, antioxidant, anticancer activities, and DNA/bovine serum albumin (BSA) binding studies. Based on the analytical and spectral analyses, a linear geometry was proposed for all the Ag(I) complexes, except for one (with the furan moiety), which formed a distorted T-shaped geometry. UV-vis absorption studies on the interactions of calf thymus-DNA (CT-DNA) with the nine Ag(I) complexes pointed to an intercalative binding mode. With a binding constant Kb of 3.75 × 105 M-1 , the complex bearing a benzothiazole moiety (1) interacted stronger with CT-DNA than the rest of the complexes. Fluorescence spectroscopic data revealed that the complexes had a modest binding affinity for BSA through static quenching. The complexes displayed good antioxidant properties, especially those with a benzothiazole moiety. Notable antibacterial activities against methicillin-resistant Staphylococcus aureus, Staphylococcus aureus, Salmonella typhimurium, Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumoniae were observed for complexes with the furan and thiophene moieties. The in vitro anticancer studies of selected complexes against three cancer cell lines showed that the complexes were more effective against the inhibition of the growth of cervical cancer cells relative to cisplatin.
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Affiliation(s)
- Adesola A Adeleke
- School of Chemistry and Physics, University of Kwazulu-Natal, Westville, South Africa.,Department of Chemical Sciences, Olabisi Onabanjo University, Ago-Iwoye, Nigeria
| | - Md Shahidul Islam
- Discipline of Biochemistry, School of Life Sciences, University of Kwazulu-Natal, Durban, South Africa
| | - Bernard Omondi
- School of Chemistry and Physics, University of Kwazulu-Natal, Westville, South Africa
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10
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Lemli B, Lomozová Z, Huber T, Lukács A, Poór M. Effects of Heme Site (FA1) Ligands Bilirubin, Biliverdin, Hemin, and Methyl Orange on the Albumin Binding of Site I Marker Warfarin: Complex Allosteric Interactions. Int J Mol Sci 2022; 23:ijms232214007. [PMID: 36430492 PMCID: PMC9694159 DOI: 10.3390/ijms232214007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
Human serum albumin (HSA) is the most abundant plasma protein in circulation. The three most important drug-binding sites on HSA are Sudlow's Site I (subdomain IIA), Sudlow's Site II (subdomain IIIA), and Heme site (subdomain IB). Heme site and Site I are allosterically coupled; therefore, their ligands may be able to allosterically modulate the binding affinity of each other. In this study, the effects of four Heme site ligands (bilirubin, biliverdin, hemin, and methyl orange) on the interaction of the Site I ligand warfarin with HSA were tested, employing fluorescence spectroscopic, ultrafiltration, and ultracentrifugation studies. Our major results/conclusions are the following. (1) Quenching studies indicated no relevant interaction, while the other fluorescent model used suggested that each Heme site ligand strongly decreases the albumin binding of warfarin. (2) Ultrafiltration and ultracentrifugation studies demonstrated the complex modulation of warfarin-HSA interaction by the different Heme site markers; for example, bilirubin strongly decreased while methyl orange considerably increased the bound fraction of warfarin. (3) Fluorescence spectroscopic studies showed misleading results in these diligand-albumin interactions. (4) Different Heme site ligands can increase or decrease the albumin binding of warfarin and the outcome can even be concentration dependent (e.g., biliverdin and hemin).
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Affiliation(s)
- Beáta Lemli
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary
- Green Chemistry Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary
| | - Zuzana Lomozová
- The Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Tamás Huber
- Department of Biophysics, Medical School, University of Pécs, Szigeti út 12, H-7624 Pécs, Hungary
| | - András Lukács
- Department of Biophysics, Medical School, University of Pécs, Szigeti út 12, H-7624 Pécs, Hungary
| | - Miklós Poór
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary
- Lab-on-a-Chip Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary
- Correspondence: ; Tel.: +36-72-501-500 (ext. 28316)
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11
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Molecular insight into the antiglycating and antiaggregating potential of ferulic acid with BSA. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-02983-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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12
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Ashraf GM, Gupta DD, Alam MZ, Baeesa SS, Alghamdi BS, Anwar F, Alqurashi TMA, Al Abdulmonem W, Alyousef MA, Alhumaydhi FA, Shamsi A. Unravelling Binding of Human Serum Albumin with Galantamine: Spectroscopic, Calorimetric, and Computational Approaches. ACS OMEGA 2022; 7:34370-34377. [PMID: 36188253 PMCID: PMC9521020 DOI: 10.1021/acsomega.2c04004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/10/2022] [Indexed: 06/16/2023]
Abstract
Human serum albumin (HSA), an abundant plasma protein, binds to various ligands, acting as a transporter for numerous endogenous and exogenous substances. Galantamine (GAL), an alkaloid, treats cognitive decline in mild to moderate Alzheimer's disease and other memory impairments. A vital step in pharmacological profiling involves the interaction of plasma protein with the drugs, and this serves as an essential platform for pharmaceutical industry advancements. This study is carried out to understand the binding mechanism of GAL with HSA using computational and experimental approaches. Molecular docking revealed that GAL preferentially occupies Sudlow's site I, i.e., binds to subdomain IIIA. The results unveiled that GAL binding does not induce any conformational change in HSA and hence does not compromise the functionality of HSA. Molecular dynamics simulation (250 ns) deciphered the stability of the HSA-GAL complex. We performed the fluorescence binding and isothermal titration calorimetry (ITC) to analyze the actual binding of GAL with HSA. The results suggested that GAL binds to HSA with a significant binding affinity. ITC measurements also delineated thermodynamic parameters associated with the binding of GAL to HSA. Altogether, the present study deciphers the binding mechanism of GAL with HSA.
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Affiliation(s)
- Ghulam Md Ashraf
- Pre-Clinical
Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department
of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Debarati Das Gupta
- College
of Pharmacy, University of Michigan, 428 Church Street, Ann Arbor, Michigan 48109, United States
| | - Mohammad Zubair Alam
- Pre-Clinical
Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department
of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Saleh Salem Baeesa
- Division
of Neurosurgery, College of Medicine, King
Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Badrah S. Alghamdi
- Pre-Clinical
Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department
of Physiology, Faculty of Medicine, King
Abdulaziz University, Jeddah 21589, Saudi Arabia
- The
Neuroscience
Research Unit, Faculty of Medicine, King
Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Firoz Anwar
- Department
of Biochemistry, Faculty of Science, King
Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Thamer M. A. Alqurashi
- Department
of Pharmacology, Faculty of Medicine, King
Abdul-Aziz University, Rabigh 25724, Saudi Arabia
| | - Waleed Al Abdulmonem
- Department
of Pathology, College of Medicine, Qassim
University, Buraydah 52571, Saudi Arabia
| | - Mohammed A. Alyousef
- Division of Neurosurgery, King
Abdulaziz
University Hospital, Jeddah 21589, Saudi Arabia
| | - Fahad A. Alhumaydhi
- Department of Medical Laboratories, College of Applied
Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia
| | - Anas Shamsi
- Centre for Interdisciplinary Research in
Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
- Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, P.O.
Box Number 346, Ajman, United Arab Emirates
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13
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Visentini FF, Perez AA, Santiago LG. Bioactive compounds: Application of albumin nanocarriers as delivery systems. Crit Rev Food Sci Nutr 2022; 63:7238-7268. [PMID: 35238254 DOI: 10.1080/10408398.2022.2045471] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Enriched products with bioactive compounds (BCs) show the capacity to produce a wide range of possible health effects. Most BCs are essentially hydrophobic and sensitive to environmental factors; so, encapsulation becomes a strategy to solve these problems. Many globular proteins have the intrinsic ability to bind, protect, encapsulate, and introduce BCs into nutraceutical or pharmaceutical matrices. Among them, albumins as human serum albumin (HSA), bovine serum albumin (BSA), ovalbumin (OVA) and α-lactalbumin (ALA) are widely abundant, available, and applied in many industrial sectors, becoming promissory materials to encapsulate BCs. Therefore, this review focuses on researches about the main groups of natural origin BCs (namely phenolic compounds, lipids, vitamins, and carotenoids), the different types of nanostructures based on albumins to encapsulate them and the main fields of application for BCs-loaded albumin systems. In this context, phenolic compounds (catechins, quercetin, and chrysin) are the most extensively BCs studied and encapsulated in albumin-based nanocarriers. Other extensively studied subgroups are stilbenes and curcuminoids. Regarding lipids and vitamins; terpenes, carotenoids (β-carotene), and xanthophylls (astaxanthin) are the most considered. The main application areas of BCs are related to their antitumor, anti-inflammatory, and antioxidant properties. Finally, BSA is the most used albumin to produced BCs-loaded nanocarriers.
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Affiliation(s)
- Flavia F Visentini
- Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina, CONICET
- Área de Biocoloides y Nanotecnología, Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Adrián A Perez
- Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina, CONICET
- Área de Biocoloides y Nanotecnología, Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Liliana G Santiago
- Área de Biocoloides y Nanotecnología, Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Argentina
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14
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Aggarwal R, Jain N, Sharma S, Kumar P, Dubey GP, Chugh H, Chandra R. Visible-light driven regioselective synthesis, characterization and binding studies of 2-aroyl-3-methyl-6,7-dihydro-5H-thiazolo[3,2-a]pyrimidines with DNA and BSA using biophysical and computational techniques. Sci Rep 2021; 11:22135. [PMID: 34764313 PMCID: PMC8586366 DOI: 10.1038/s41598-021-01037-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 10/15/2021] [Indexed: 11/09/2022] Open
Abstract
In recent times, fused azaheterocycles emerged as impressive therapeutic agents. Binding studies of such azaheterocycles with biomolecules is an important subject for pharmaceutical and biochemical studies aiming at the design and development of new drugs. Fused heterocyclic scaffolds, such as thiazolopyrmidines have long been used in the pharmaceutical industry for the treatment of various diseases. In this study, we have accomplished a regioselective synthesis of 2-aroyl-3-methyl-6,7-dihydro-5H-thiazolo[3,2-a]pyrimidines by the reaction of tetrahydropyrimidine-2(H)-thione with α-bromo-1,3-diketones, generated in situ from 1,3-diketones and NBS, using visible light as an inexpensive, green and renewable energy source under mild reaction conditions with wide-ranging substrate scope. The regioisomer was characterized unambiguously by 2D-NMR [1H-13C] HMBC and [1H-13C] HMQC spectroscopy. In silico toxicity data analysis showed the low toxicity risks of the synthesized compounds. Computational molecular docking studies were carried out to examine the interaction of thiazolo[3,2-a]pyrimidines with calf-thymus DNA (ct-DNA) and Bovine Serum Albumin (BSA). Moreover, different spectroscopic approaches viz. steady-state fluorescence, competitive displacement assay, UV-visible and circular dichroism (CD) along with viscosity measurements were employed to investigate the binding mechanisms of thiazolo[3,2-a]pyrimidines with DNA and BSA. The results thus obtained revealed that thiazolo[3,2-a]pyrimidines offer groove bindings with DNA and showed moderate bindings with BSA.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India.
- Council of Scientific and Industrial Research, National Institute of Science Communication and Policy Research, New Delhi, 110012, India.
| | - Naman Jain
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Shilpa Sharma
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Prince Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Gyan Prakash Dubey
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Heerak Chugh
- Department of Chemistry, University of Delhi, New Delhi, 110007, India
| | - Ramesh Chandra
- Department of Chemistry, University of Delhi, New Delhi, 110007, India
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15
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Nirwal S, Bharathi V, Patel BK. Amyloid-like aggregation of bovine serum albumin at physiological temperature induced by cross-seeding effect of HEWL amyloid aggregates. Biophys Chem 2021; 278:106678. [PMID: 34492451 DOI: 10.1016/j.bpc.2021.106678] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/28/2021] [Accepted: 08/29/2021] [Indexed: 01/16/2023]
Abstract
BSA can form amyloid-like aggregates in vitro at 65 °C. Heterologous amyloid can proposedly cross-seed other protein's aggregation, however, general mechanisms and driving conditions remain to be vividly elucidated. Here, we examined if pre-formed HEWL amyloid can cross-seed the aggregation of BSA at physiological temperature, 37 °C, and whether the efficacy depends on the BSA conformation. We find that at pH 3.0, 37 °C where BSA manifests exposure of abundant hydrophobic patches, HEWL amyloid efficiently drives BSA into ThT-positive, sarkosyl-resistant, β-sheet rich amyloid-like aggregates exhibiting fibrils in TEM. On the contrary, HEWL amyloid fails to cross-seed the BSA aggregation at pH 7.0, 37 °C where BSA has largely internalized hydrophobic patches. Strikingly, human lysozyme amyloid could also cross-seed human serum albumin aggregation at pH 3.0, 37 °C. Thus, heterologous amyloid cross-seeding can help overcome the energy-barrier for aggregation of other proteins that, for any reason, may have perturbed and promiscuous structural conformation at physiological temperatures.
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Affiliation(s)
- Sadhana Nirwal
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India
| | - Vidhya Bharathi
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India
| | - Basant K Patel
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India.
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17
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Mala John GS, Takeuchi S, Venkatraman G, Rayala SK. Nordihydroguaiaretic Acid in Therapeutics: Beneficial to Toxicity Profiles and the Search for its Analogs. Curr Cancer Drug Targets 2021; 20:86-103. [PMID: 31642411 DOI: 10.2174/1568009619666191022141547] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 07/26/2019] [Accepted: 08/22/2019] [Indexed: 12/16/2022]
Abstract
Nordihydroguaiaretic acid (NDGA) is a plant lignan obtained from creosote bush, Larrea tridentata and is known to possess antioxidant, anticancer activities and is used in traditional medicine in North America and Mexico. However, its prolonged consumption leads to liver damage and kidney dysfunction. Despite its toxicity and side effects, there is little awareness to forbid its consumption and its use in the treatment of medical ailments has continued over the years. Several reports discuss its therapeutic efficiency and its medical applications have tremendously been on the rise to date. There has been a recent surge of interest in the chemical synthesis of NDGA derivatives for therapeutic applications. NDGA derivatives have been developed as better alternatives to NDGA. Although several NDGA derivatives have been chemically synthesized as evidenced by recent literature, there is a paucity of information on their therapeutic efficacies. This review is to highlight the medicinal applications of NDGA, its toxicity evaluations and discuss the chemical derivatives of NDGA synthesized and studied so far and suggest to continue research interests in the development of NDGA analogs for therapeutic applications. We suggest that NDGA derivatives should be investigated more in terms of chemical synthesis with preferred conformational structures and exploit their biological potentials with future insights to explore in this direction to design and develop structurally modified NDGA derivatives for potential pharmacological properties.
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Affiliation(s)
| | - Satoru Takeuchi
- Factory of Takeuchi Nenshi, TAKENEN, 85NE Takamatsu, Kahoku Ishikawa 929-1215, Japan
| | - Ganesh Venkatraman
- Sri Ramachandra Center for Biomedical Nanotechnology, Sri Ramachandra Institute of Higher Education & Research, Chennai-600116, India
| | - Suresh Kumar Rayala
- Department of Biotechnology, Indian Institute of Technology (IIT), Madras, Chennai-600036, India
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18
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A Deferasirox Derivative That Acts as a Multifaceted Platform for the Detection and Quantification of Fe3+. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9040068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Here, we report that ExSO3H, a synthetically accessible, water-soluble, non-toxic derivative of the clinical iron chelator deferasirox, acts as a colorimetric chemosensor that permits the detection and quantification of Fe3+ in aqueous samples at pH 2–5. In addition, we observed that a fluorescent turn-on response was produced when this chelator was allowed to interact with human serum albumin (HSA). This fluorescence was quenched in the presence of Fe3+, thus allowing us to monitor the presence of this biologically important metal cation via two independent methods.
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19
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Chaves OA, Soares MAG, Campos de Oliveira MC. Monosaccharides interact weakly with human serum albumin. Insights for the functional perturbations on the binding capacity of albumin. Carbohydr Res 2021; 501:108274. [PMID: 33657497 DOI: 10.1016/j.carres.2021.108274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 02/14/2021] [Accepted: 02/23/2021] [Indexed: 12/24/2022]
Abstract
Monosaccharides, e.g. fructose, glucose, and arabinose are present in most foods consumed daily, whether, in natural or industrialized forms, and their concentration in the human bloodstream can impact the formation of advanced glycation end-products (AGEs, prevalent in people with diabetes) impacting the profile of Human Serum Albumin (HSA) in biodistribution of endogenous and exogenous compounds. Multiple spectroscopic techniques (UV-vis, circular dichroism, steady-state, and time-resolved fluorescence) combined with molecular docking showed that carbohydrates interact weakly and spontaneously via a ground-state association with HSA. The binding is enthalpically and entropically driven in the subdomain IIA (site I) and perturb weakly the secondary structure of the albumin. Hydrogen bonding and van der Waals forces are the main intermolecular interactions involved in the ligand binding, as well as hydrophobic effects related to the release of hydration shell upon ligand binding. Overall, the results indicated that an increase in glucose, fructose or arabinose level in the human bloodstream may cause functional perturbation on the binding capacity of albumin. Therefore, there is the necessity of carbohydrate level control in the bloodstream to not compromise the interaction and distribution of exogenous and endogenous compounds by HSA.
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Affiliation(s)
- Otávio A Chaves
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal Rural do Rio de Janeiro, Rodovia BR-465, Km 7, CEP, 23890-000, Seropédica, Rio de Janeiro, Brazil; Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), CEP, 21040-900, Rio de Janeiro, Brazil.
| | - Marilia A G Soares
- Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Av. Antônio Carlos 6627, CEP, 31270-901, Vila Isabel, Rio de Janeiro, Brazil
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20
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Acunha TV, Chaves OA, Iglesias BA. Fluorescent pyrene moiety in fluorinated C6F5-corroles increases the interaction with HSA and CT-DNA. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424620500534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Two fluorinated meso-C6F5-corroles (5,15-bis(pentafluorophenyl)-10-(phenyl)corrole and 5,15-bis(pentafluorophenyl)-10-(1-pyrenyl)corrole) were biologically evaluated in terms of binding affinity to human serum albumin (HSA) and calf-thymus DNA (CT-DNA) via multiple spectroscopic techniques under physiological conditions combined with molecular docking calculations. The HSA:corrole interaction is spontaneous and moderate via static binding, disturbing both secondary and tertiary albumin structures at high fluorinated corrole concentrations. The competitive binding studies indicated positive cooperativity or allosteric activation, while molecular docking calculations suggested that both fluorinated corroles bind preferentially inside subdomains IIA and IB (sites I and III, respectively). The experimental CT-DNA binding assays indicated that fluorinated corroles interact spontaneously by non-classical modes in the minor groove of the CT-DNA strands via static fluorescence quenching mechanism. Molecular docking results also showed the minor groove as the main binding site for CT-DNA. Overall, the pyrene moiety increased the interaction with HSA and CT-DNA, which is probably due to the planarity and volume that favors the pyrene unit to be buried inside the biomacromolecule pockets.
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Affiliation(s)
- Thiago V. Acunha
- Laboratory of Bioinorganics and Porphyrinic Materials, Department of Chemistry, Federal University of Santa Maria — UFSM, Roraima 1000, Santa Maria — RS, 97105-900, Brazil
| | - Otávio A. Chaves
- SENAI Institute of Innovation in Green Chemistry, Morais e Silva 53, Rio de Janeiro — RJ, 20271-030, Brazil
| | - Bernardo A. Iglesias
- Laboratory of Bioinorganics and Porphyrinic Materials, Department of Chemistry, Federal University of Santa Maria — UFSM, Roraima 1000, Santa Maria — RS, 97105-900, Brazil
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21
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Nakhjiri MZ, Asadi S, Hasan A, Babadaei MMN, Vahdani Y, Rasti B, Ale-Ebrahim M, Arsalan N, Goorabjavari SVM, Haghighat S, Sharifi M, Shahpasand K, Akhtari K, Falahati M. Exploring the interaction of synthesized nickel oxide nanoparticles through hydrothermal method with hemoglobin and lymphocytes: Bio-thermodynamic and cellular studies. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113893] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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22
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Shahnawaz Khan M, Tabrez S, Rehman MT, Alokail MS. Al (III) metal augment thermal aggregation and fibrillation in protein: Role of metal toxicity in neurological diseases. Saudi J Biol Sci 2020; 27:2221-2226. [PMID: 32874119 PMCID: PMC7451595 DOI: 10.1016/j.sjbs.2020.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 04/17/2020] [Accepted: 05/03/2020] [Indexed: 02/06/2023] Open
Abstract
Protein fibrillation is a leading cause of innumerable neurodegenerative diseases. The exact underlying mechanism associated with the formation of fibrils is yet to be known. Recently, the role of metal ions resulting into fibrillation of proteins has gained attention of the scientific community. In this piece of work, we have investigated the effect of the aluminum (Al) metal ion on the kinetics of aggregation of bovine serum albumin (BSA) protein under physiological conditions by employing several biophysical and microscopic techniques. Quenching of tryptophan fluorescence was observed along with 9 nm blue shift, demonstrating BSA becomes more hydrophobic during unfolding pathway of thermal denaturation. Moreover, ANS (8-Anilino-1-naphthalene sulfonic acid) binding shows quenching in fluorescence intensity with increasing time of incubation at 65 °C, suggesting unfolding leading to the disruption of hydrophobic patches in BSA. Besides, Thioflavin T intensity indicated a significant acceleration in BSA fibrillation at a ratio of 1:1 and 1:2 of BSA and Al (III) metal ion respectively. In addition, circular dichroism (CD) spectroscopy study revealed the transition of BSA from α-helical conformation to the β-sheet rich structure. Molecular docking analysis demonstrated significant binding affinity (-1.2 kcal/mol) of Al (III) with BSA involving Phe501, Phe506, Val575, Thr578, Gln579, Leu531 residues. Transmission electron microscopy (TEM) reaffirm augmentation of thermal-induced BSA fibril formation in the presence of Al (III) metal ions. This study highlights the metal chelating potency as the possible therapeutic target for neurological diseases.
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Affiliation(s)
- Mohd Shahnawaz Khan
- Protein Research Chair, Department of Biochemistry, College of Sciences, King, Saud University, Riyadh, Saudi Arabia
| | - Shams Tabrez
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Md Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Majed S. Alokail
- Protein Research Chair, Department of Biochemistry, College of Sciences, King, Saud University, Riyadh, Saudi Arabia
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23
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Biophysical Insight into the Interaction of Human Lysozyme with Anticancer Drug Anastrozole: A Multitechnique Approach. ScientificWorldJournal 2020; 2020:8363685. [PMID: 32908463 PMCID: PMC7468670 DOI: 10.1155/2020/8363685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 06/19/2020] [Indexed: 12/14/2022] Open
Abstract
In the present study, we employ fluorescence spectroscopy, dynamic light scattering, and molecular docking methods. Binding of anticancer drug anastrozole with human lysozyme (HL) is studied. Binding of anastrozole to HL is moderate but spontaneous. There is anastrozole persuaded hydrodynamic change in HL, leading to molecular compaction. Binding of anastrozole to HL also decreased in vitro lytic activity of HL. Molecular docking results suggest the electrostatic interactions and van der Waals forces played key role in binding interaction of anastrozole near the catalytic site. Binding interaction of anastrozole to proteins other than major transport proteins in blood can significantly affect pharmacokinetics of this molecule. Hence, rationalizing drug dosage is important. This study also points to unrelated effects that small molecules bring in the body that are considerable and need thorough investigation.
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24
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Bratty MA. Spectroscopic and molecular docking studies for characterizing binding mechanism and conformational changes of human serum albumin upon interaction with Telmisartan. Saudi Pharm J 2020; 28:729-736. [PMID: 32550805 PMCID: PMC7292872 DOI: 10.1016/j.jsps.2020.04.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/28/2020] [Indexed: 11/28/2022] Open
Abstract
Human serum albumin (HSA), one of the most copious plasma proteins is responsible for binding and transportation of many exogenous and endogenous ligands including drugs. In this study, we intended to explore the extent and types of binding interaction present between HSA and the antihypertensive drug, telmisartan (TLM). The conformational changes in HSA due to this binding were also studied using different spectroscopic and molecular docking techniques. The spectral shifting and intensity variations upon interaction with TLM were studied using FT-IR spectroscopy. Binding constant and the change in absorption of HSA at its λmax was analyzed using absorption spectroscopy. Eventually, the types and extent of binding interactions were confirmed using molecular docking technique. Results have shown that TLM significantly interacts with the binding site-1 of HSA utilizing strong hydrogen bonding with Glu292, and Lys195 residues. The UV-absorption intensities were found to be decreased serially as the drug concentration increased with a binding constant of 1.01 × 103 M−1. The secondary structure analysis using FT-IR spectroscopy also revealed a marked reduction in the α-helix (56%) component of HSA on interaction. This study gives critical insights into the interaction of TLM with HSA protein which eventually affects the concentration of TLM reaching the site of action and ultimately its therapeutic profile.
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Key Words
- ADME, Absorption, Distribution, Metabolism, Excretion
- Binding
- FT-IR
- Glu, Glutamate
- HAS, Human Serum Albumin
- Human serum albumin
- Lys, Lysine
- Molecular Docking
- PDB, Protein Data Bank
- TLM, Telmisartan
- Telmisartan
- UCSF, University of California, San Fransisco
- UV–Vis
- λmax, wavelength of maximum absorbance
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Affiliation(s)
- Mohammed Al Bratty
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
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25
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Rapid exposure of macrophages to drugs resolves four classes of effects on the leading edge sensory pseudopod: Non-perturbing, adaptive, disruptive, and activating. PLoS One 2020; 15:e0233012. [PMID: 32469878 PMCID: PMC7259666 DOI: 10.1371/journal.pone.0233012] [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: 12/13/2019] [Accepted: 04/26/2020] [Indexed: 11/19/2022] Open
Abstract
Leukocyte migration is controlled by a membrane-based chemosensory pathway on the leading edge pseudopod that guides cell movement up attractant gradients during the innate immune and inflammatory responses. This study employed single cell and population imaging to investigate drug-induced perturbations of leading edge pseudopod morphology in cultured, polarized RAW macrophages. The drugs tested included representative therapeutics (acetylsalicylic acid, diclofenac, ibuprofen, acetaminophen) as well as control drugs (PDGF, Gö6976, wortmannin). Notably, slow addition of any of the four therapeutics to cultured macrophages, mimicking the slowly increasing plasma concentration reported for standard oral dosage in patients, yielded no detectable change in pseudopod morphology. This finding is consistent with the well established clinical safety of these drugs. However, rapid drug addition to cultured macrophages revealed four distinct classes of effects on the leading edge pseudopod: (i) non-perturbing drug exposures yielded no detectable change in pseudopod morphology (acetylsalicylic acid, diclofenac); (ii) adaptive exposures yielded temporary collapse of the extended pseudopod and its signature PI(3,4,5)P3 lipid signal followed by slow recovery of extended pseudopod morphology (ibuprofen, acetaminophen); (iii) disruptive exposures yielded long-term pseudopod collapse (Gö6976, wortmannin); and (iv) activating exposures yielded pseudopod expansion (PDGF). The novel observation of adaptive exposures leads us to hypothesize that rapid addition of an adaptive drug overwhelms an intrinsic or extrinsic adaptation system yielding temporary collapse followed by adaptive recovery, while slow addition enables gradual adaptation to counteract the drug perturbation in real time. Overall, the results illustrate an approach that may help identify therapeutic drugs that temporarily inhibit the leading edge pseudopod during extreme inflammation events, and toxic drugs that yield long term inhibition of the pseudopod with negative consequences for innate immunity. Future studies are needed to elucidate the mechanisms of drug-induced pseudopod collapse, as well as the mechanisms of adaptation and recovery following some inhibitory drug exposures.
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26
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Almutairi FM, Ajmal MR, Siddiqi MK, Majid N, Al-Alawy AIA, Abdelhameed AS, Khan RH. Biophysical insight into the interaction of levocabastine with human serum albumin: spectroscopy and molecular docking approach. J Biomol Struct Dyn 2020; 39:1525-1534. [PMID: 32308140 DOI: 10.1080/07391102.2020.1750486] [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: 12/17/2022]
Abstract
Interaction of levocabastine with human serum albumin (HSA) is investigated by applying fluorescence spectroscopy, circular dichroism spectroscopy and molecular docking methods. Levocabastine is an important drug in treatment of allergy and currently a target drug for drug repurposing to treat other diseases like vernal keratoconjuctivitis. Fluorescence quenching data revealed that levocabastine bind weakly to protein with binding constant in the order of 103 M-1. Förster resonance energy transfer results indicated the binding distance of 2.28 nm for levocabastine. Synchronous fluorescence result suggest slight blue shift for tryptophan upon levocabastine binding, binding of levocabastine impelled rise in α-helical structure in protein, while there are minimal changes in tertiary structure in protein. Moreover, docking results indicate levocabastine binds to pocket near to the drug site-I in HSA via hydrogen bonding and hydrophobic interactions. Understanding the interaction of levocabastine with HSA is significant for the advancement of therapeutic and diagnostic strategies for optimal treatment results.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Fahad M Almutairi
- Biochemistry Department, Faculty of Science, Physical Biochemistry Research Laboratory, University of Tabuk, Tabuk, Saudi Arabia
| | - Mohammad Rehan Ajmal
- Biochemistry Department, Faculty of Science, Physical Biochemistry Research Laboratory, University of Tabuk, Tabuk, Saudi Arabia
| | | | - Nabeela Majid
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Adel Ibrahim Ahmad Al-Alawy
- Biochemistry Department, Faculty of Science, Physical Biochemistry Research Laboratory, University of Tabuk, Tabuk, Saudi Arabia
| | - Ali Saber Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
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Khatun S, Sindhu A, Venkatesu P. Can stem bromelain, a pineapple waste product, be used as a drug alternative? A mechanistic insight into protein–protein interactions. NEW J CHEM 2020. [DOI: 10.1039/d0nj02511a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Binding of stem bromelain to bovine serum albumin induced conformational changes, as shown by various biophysical techniques.
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Affiliation(s)
- Samima Khatun
- Department of Chemistry
- University of Delhi
- Delhi
- India
- Department of Chemistry
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28
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Shaghaghi M, Rashtbari S, Vejdani S, Dehghan G, Jouyban A, Yekta R. Exploring the interactions of a Tb(III)–quercetin complex with serum albumins (HSA and BSA): spectroscopic and molecular docking studies. LUMINESCENCE 2019; 35:512-524. [DOI: 10.1002/bio.3757] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 11/22/2019] [Accepted: 12/04/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Masoomeh Shaghaghi
- Department of ChemistryPayame Noor University P. O. Box 19395‐3697 Tehran Iran
| | - Samaneh Rashtbari
- Department of Biology, Faculty of Natural SciencesUniversity of Tabriz Tabriz Iran
| | - Samira Vejdani
- Department of ChemistryPayame Noor University P. O. Box 19395‐3697 Tehran Iran
| | - Gholamreza Dehghan
- Department of Biology, Faculty of Natural SciencesUniversity of Tabriz Tabriz Iran
| | - Abolghasem Jouyban
- Pharmaceutical Analysis Research Center and Faculty of PharmacyTabriz University of Medical Sciences Tabriz Iran
| | - Reza Yekta
- Department of Biology, Faculty of Natural SciencesUniversity of Tabriz Tabriz Iran
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Afrin S, Rahman Y, Alhaji Isa M, Ahmed S, Tabish M. Biophysical insights into the binding characteristics of bovine serum albumin with dipyridamole and the influence of molecular interaction with β cyclodextrin. J Biomol Struct Dyn 2019; 38:3046-3058. [DOI: 10.1080/07391102.2019.1651220] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shumaila Afrin
- Department of Biochemistry, Faculty of Life Sciences, A.M. University, Aligarh, U.P., India
| | - Yusra Rahman
- Department of Biochemistry, Faculty of Life Sciences, A.M. University, Aligarh, U.P., India
| | - Mustafa Alhaji Isa
- Department of Microbiology, Faculty of Sciences, University of Maiduguri, Maiduguri, P.M.B., Nigeria
| | - Shahbaz Ahmed
- Department of Biochemistry, Faculty of Life Sciences, A.M. University, Aligarh, U.P., India
| | - Mohammad Tabish
- Department of Biochemistry, Faculty of Life Sciences, A.M. University, Aligarh, U.P., India
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A biophysical insight into structural and functional state of human serum albumin in uremia mimic milieu. Int J Biol Macromol 2019; 131:697-705. [DOI: 10.1016/j.ijbiomac.2019.03.123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 03/19/2019] [Accepted: 03/19/2019] [Indexed: 02/06/2023]
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31
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Protein misfolding, aggregation and mechanism of amyloid cytotoxicity: An overview and therapeutic strategies to inhibit aggregation. Int J Biol Macromol 2019; 134:1022-1037. [PMID: 31128177 DOI: 10.1016/j.ijbiomac.2019.05.109] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/18/2019] [Accepted: 05/18/2019] [Indexed: 12/18/2022]
Abstract
Protein and peptides are converted from their soluble forms into highly ordered fibrillar aggregates under various conditions inside the cell. Such transitions confer diverse neurodegenerative diseases including Alzheimer's disease, Huntington's disease Prion's disease, Parkinson's disease, polyQ and share abnormal folding of potentially cytotoxic protein species linked with degeneration and death of precise neuronal populations. Presently, major advances are made to understand and get detailed insight into the structural basis and mechanism of amyloid formation, cytotoxicity and therapeutic approaches to combat them. Here we highlight classifies and summarizes the detailed overview of protein misfolding and aggregation at their molecular level including the factors that promote protein aggregation under in vivo and in vitro conditions. In addition, we describe the recent technologies that aid the characterization of amyloid aggregates along with several models that might be responsible for amyloid induced cytotoxicity to cells. Overview on the inhibition of amyloidosis by targeting different small molecules (both natural and synthetic origin) have been also discussed, that provides important approaches to identify novel targets and develop specific therapeutic strategies to combat protein aggregation related neurodegenerative diseases.
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32
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Structural characterization, teratogenicity and in vitro avian antimicrobial activity of posterior salivary gland (PSG) toxin from cuttlefish, Sepia prashadi. Int J Biol Macromol 2019; 124:1145-1155. [DOI: 10.1016/j.ijbiomac.2018.12.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 12/01/2018] [Accepted: 12/02/2018] [Indexed: 11/22/2022]
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33
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Siddiqui MF, Bano B. In-vitro assessment of the binding mechanism of oxyfluorfen (herbicide) with garlic phytocystatin: multi-spectroscopic and isothermal titration calorimetric study. J Biomol Struct Dyn 2019; 37:4120-4131. [DOI: 10.1080/07391102.2018.1544100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Bilqees Bano
- Department of Biochemistry, Aligarh Muslim University, Aligarh, UP, India
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34
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Awasthi S, Preethy R, Saraswathi N. Nordihydroguaiaretic acid prevents glycation induced structural alterations and aggregation of albumin. Int J Biol Macromol 2019; 122:479-484. [DOI: 10.1016/j.ijbiomac.2018.10.173] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 10/19/2018] [Accepted: 10/25/2018] [Indexed: 12/20/2022]
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35
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Siddiqui S, Ameen F, Jahan I, Nayeem SM, Tabish M. A comprehensive spectroscopic and computational investigation on the binding of the anti-asthmatic drug triamcinolone with serum albumin. NEW J CHEM 2019. [DOI: 10.1039/c8nj05486j] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Binding study of triamcinolone with BSA through in vitro and in silico approaches, helping in the development of drugs with better therapeutic efficacy.
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Affiliation(s)
- Sharmin Siddiqui
- Department of Biochemistry, Faculty of Life Sciences
- A.M. University
- Aligarh
- India
| | - Faisal Ameen
- Department of Biochemistry, Faculty of Life Sciences
- A.M. University
- Aligarh
- India
| | - Ishrat Jahan
- Department of Chemistry
- Faculty of Science
- A.M. University
- Aligarh
- India
| | - Shahid M. Nayeem
- Department of Chemistry
- Faculty of Science
- A.M. University
- Aligarh
- India
| | - Mohammad Tabish
- Department of Biochemistry, Faculty of Life Sciences
- A.M. University
- Aligarh
- India
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36
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Siddiqui MF, Khan MS, Husain FM, Bano B. Deciphering the binding of carbendazim (fungicide) with human serum albumin: A multi-spectroscopic and molecular modelling studies. J Biomol Struct Dyn 2018; 37:2230-2241. [DOI: 10.1080/07391102.2018.1481768] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Mohd Faizan Siddiqui
- Department of Biochemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Mohd Shahnawaz Khan
- Protein Research Chair, Department of Biochemistry, College of Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Fohad Mabood Husain
- Department of Food Science and Nutrition, Faculty of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi ArabiaCommunicated by Ramaswamy H. Sarma
| | - Bilqees Bano
- Department of Biochemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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37
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Ronzetti M, Baljinnyam B, Yasgar A, Simeonov A. Testing for drug-human serum albumin binding using fluorescent probes and other methods. Expert Opin Drug Discov 2018; 13:1005-1014. [DOI: 10.1080/17460441.2018.1534824] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Michael Ronzetti
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, USA
| | - Bolormaa Baljinnyam
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, USA
| | - Adam Yasgar
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, USA
| | - Anton Simeonov
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, USA
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38
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Ajmal MR, Almutairi F, Zaidi N, Alam P, Siddiqi MK, Khan MV, Zaman M, Ishtikhar M, Khan RH. Biophysical insights into the interaction of clofazimine with human alpha 1-acid glycoprotein: a multitechnique approach. J Biomol Struct Dyn 2018; 37:1390-1401. [DOI: 10.1080/07391102.2018.1461686] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- Mohammad Rehan Ajmal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
- Department of Biochemistry, Faculty of Sciences, University of Tabuk, Tabuk 71491, Kingdom of Saudi Arabia
| | - Fahad Almutairi
- Department of Biochemistry, Faculty of Sciences, University of Tabuk, Tabuk 71491, Kingdom of Saudi Arabia
| | - Nida Zaidi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | | | - Mohsin Vahid Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Masihuz Zaman
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohd Ishtikhar
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
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39
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Ikhlas S, Usman A, Ahmad M. Comparative study of the interactions between bisphenol-A and its endocrine disrupting analogues with bovine serum albumin using multi-spectroscopic and molecular docking studies. J Biomol Struct Dyn 2018; 37:1427-1437. [DOI: 10.1080/07391102.2018.1461136] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Shoeb Ikhlas
- Faculty of Life Sciences, Department of Biochemistry, Aligarh Muslim University, Aligarh, India
| | - Afia Usman
- Faculty of Life Sciences, Department of Biochemistry, Aligarh Muslim University, Aligarh, India
| | - Masood Ahmad
- Faculty of Life Sciences, Department of Biochemistry, Aligarh Muslim University, Aligarh, India
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40
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Interaction of catecholamine precursor l-Dopa with lysozyme: A biophysical insight. Int J Biol Macromol 2018; 109:1132-1139. [DOI: 10.1016/j.ijbiomac.2017.11.107] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/15/2017] [Accepted: 11/16/2017] [Indexed: 12/13/2022]
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41
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Karimian Amroabadi M, Taheri-Kafrani A, Heidarpoor Saremi L, Rastegari AA. Spectroscopic studies of the interaction between alprazolam and apo-human serum transferrin as a drug carrier protein. Int J Biol Macromol 2018; 108:263-271. [DOI: 10.1016/j.ijbiomac.2017.11.179] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 11/29/2017] [Accepted: 11/30/2017] [Indexed: 01/20/2023]
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42
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Kallubai M, Reddy SP, Dubey S, Ramachary DB, Subramanyam R. Spectroscopic evaluation of synthesized 5β-dihydrocortisol and 5β-dihydrocortisol acetate binding mechanism with human serum albumin and their role in anticancer activity. J Biomol Struct Dyn 2018; 37:623-640. [PMID: 29375009 DOI: 10.1080/07391102.2018.1433554] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Our study focus on the biological importance of synthesized 5β-dihydrocortisol (Dhc) and 5β-dihydrocortisol acetate (DhcA) molecules, the cytotoxic study was performed on breast cancer cell line (MCF-7) normal human embryonic kidney cell line (HEK293), the IC50 values for MCF-7 cells were 28 and 25 μM, respectively, whereas no toxicity in terms of cell viability was observed with HEK293 cell line. Further experiment proved that Dhc and DhcA induced 35.6 and 37.7% early apoptotic cells and 2.5, 2.9% late apoptotic cells, respectively, morphological observation of cell death through TUNEL assay revealed that Dhc and DhcA induced apoptosis in MCF-7 cells. The complexes of HSA-Dhc and HSA-DhcA were observed as static quenching, and the binding constants (K) was 4.7 ± .03 × 104 M-1 and 3.9 ± .05 × 104 M-1, and their binding free energies were found to be -6.4 and -6.16 kcal/mol, respectively. The displacement studies confirmed that lidocaine 1.4 ± .05 × 104 M-1 replaced Dhc, and phenylbutazone 1.5 ± .05 × 104 M-1 replaced by DhcA, which explains domain I and domain II are the binding sites for Dhc and DhcA. Further, FT-IR, synchronous spectroscopy, and CD results revealed that the secondary structure of HSA was altered in the presence of Dhc and DhcA. Furthermore, the atomic force microscopy and transmission electron microscopy showed that the dimensions like height and molecular size of the HSA-Dhc and HSA-DhcA complex were larger compared to HSA alone. Detailed analysis through molecular dynamics simulations also supported greater stability of HSA-Dhc and HSA-DhcA complexes, and root-mean-square-fluctuation interpreted the binding site of Dhc as domain IB and domain IIA for DhcA. This information is valuable for further development of steroid derivative with improved pharmacological significance as novel anti-cancer drugs.
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Affiliation(s)
- Monika Kallubai
- a Department of Plant Sciences, School of Life Sciences , University of Hyderabad , Hyderabad 500046 , India
| | - Srinivasa P Reddy
- b Catalysis Laboratory, School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Shreya Dubey
- a Department of Plant Sciences, School of Life Sciences , University of Hyderabad , Hyderabad 500046 , India
| | - Dhevalapally B Ramachary
- b Catalysis Laboratory, School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Rajagopal Subramanyam
- a Department of Plant Sciences, School of Life Sciences , University of Hyderabad , Hyderabad 500046 , India
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43
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Nusrat S, Zaman M, Masroor A, Siddqi MK, Zaidi N, Neelofar K, Abdelhameed AS, Khan RH. Deciphering the enhanced inhibitory, disaggregating and cytoprotective potential of promethazine towards amyloid fibrillation. Int J Biol Macromol 2018; 106:851-863. [DOI: 10.1016/j.ijbiomac.2017.08.081] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 08/12/2017] [Accepted: 08/13/2017] [Indexed: 11/26/2022]
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44
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Probing the interaction of cephalosporin antibiotic–ceftazidime with human serum albumin: A biophysical investigation. Int J Biol Macromol 2017; 105:292-299. [DOI: 10.1016/j.ijbiomac.2017.07.036] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 07/06/2017] [Accepted: 07/06/2017] [Indexed: 11/19/2022]
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45
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Siddiqi M, Nusrat S, Alam P, Malik S, Chaturvedi SK, Ajmal MR, Abdelhameed AS, Khan RH. Investigating the site selective binding of busulfan to human serum albumin: Biophysical and molecular docking approaches. Int J Biol Macromol 2017; 107:1414-1421. [PMID: 28987797 DOI: 10.1016/j.ijbiomac.2017.10.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/28/2017] [Accepted: 10/02/2017] [Indexed: 12/31/2022]
Abstract
We have studied the binding of busulfan (BN) to human serum albumin (HSA) at physiological pH 7.4 by using fluorescence, UV-vis and circular dichroism (CD) spectroscopic tools, as well as dynamic light scattering (DLS) measurements and molecular simulation approaches. HSA fluorescence quenching experiments showed that BN reduces the HSA native fluorescence intensity through the static mechanism. In addition, a single binding site on the HSA is occupied by BN with a binding constant at 298K of 1.84×103M-1. The enthalpy change (ΔH) and entropy change (ΔS) of BN-HSA interaction were calculated as -1.40kcalmol-1 and +10.14calmol-1K-1 respectively, which suggest the possible interaction mode as hydrophobic and hydrogen bonding. Moreover, the secondary structure alteration of HSA following its complexation with BN was studied and showed that α-helical content of HSA gets increased on interacting with BN. Ligand binding site to HSA was further investigated by site-specific markers in fluorescence measurements as well molecular modeling approach which indicated that BN bind to the nearby sudlow site II of HSA through hydrophobic as well as hydrogen bonding interaction. The present study will be helpful for understanding the binding mechanism of BN to human serum albumin.
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Affiliation(s)
- Mohammad Siddiqi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Saima Nusrat
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Sadia Malik
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Sumit Kumar Chaturvedi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Mohammad Rehan Ajmal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Ali Saber Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India.
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Raza M, Jiang Y, Wei Y, Ahmad A, Khan A, Qipeng Y. Insights from spectroscopic and in-silico techniques for the exploitation of biomolecular interactions between Human serum albumin and Paromomycin. Colloids Surf B Biointerfaces 2017; 157:242-253. [DOI: 10.1016/j.colsurfb.2017.05.076] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/15/2017] [Accepted: 05/30/2017] [Indexed: 11/16/2022]
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47
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Jafarisani M, Bathaie SZ, Mousavi MF. Saffron carotenoids (crocin and crocetin) binding to human serum albumin as investigated by different spectroscopic methods and molecular docking. J Biomol Struct Dyn 2017; 36:1681-1690. [PMID: 28537197 DOI: 10.1080/07391102.2017.1331865] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Therapeutic effects of saffron ingredients were studied in some diseases. The pharmacokinetics and pharmacodynamics of these ingredients were also studied, but their transport mechanism is not clearly known. Serum albumin has been known as the most important transporter of many drugs in the body that affects their disposition, transportation, and bioavailability. Here, we investigated the interaction of crocin (Cro) with HSA, for the first time, and compared with the crocetin (Crt)-HSA interaction. UV and fluorescence spectroscopy, circular dichroism (CD), and molecular docking was applied to investigate the possibility and mechanism of binding of HSA with these natural carotenoids. The gradually addition of Cro increased HSA absorbency at 278 nm, while Crt decreased it. Both of these changes induced HSA unfolding that was confirmed by the decreased α-helix content, as determined by the CD. Both carotenoids quenched HSA fluorescence emission, but with different mechanisms. The Stern-Volmer plots indicated a dynamic quenching of intrinsic emission of HSA due to Cro addition, while Crt quenching followed both static and dynamic quenching mechanisms. Docking results indicated binding of Cro/Crt in sub-domain IIA, Sudlow site I of HSA, which accompanied with the hydrogen bonding of Cro/Crt with Tyr138. The interaction of these ligands (Cro/Crt) caused HSA unfolding and affects the hydrophobic environment of Trp241, which result in the quenching of Trp fluorescence. The UV spectroscopy and fluorescence quenching data indicated the differences in the mechanisms of interaction of Cro/Crt with HSA, which is due to the differences in the structure and hydrophobicity of these ligands.
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Affiliation(s)
- Moslem Jafarisani
- a Faculty of Medical Sciences, Department of Clinical Biochemistry , Tarbiat Modares University , Tehran , Iran
| | - S Zahra Bathaie
- a Faculty of Medical Sciences, Department of Clinical Biochemistry , Tarbiat Modares University , Tehran , Iran
| | - Mir F Mousavi
- b Department of Chemistry , Tarbiat Modares University , Tehran 14115-175 , Iran
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48
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Nusrat S, Zaidi N, Siddiqi MK, Zaman M, Siddique IA, Ajmal MR, Abdelhameed AS, Khan RH. Anti-Parkinsonian L-Dopa can also act as anti-systemic amyloidosis—A mechanistic exploration. Int J Biol Macromol 2017; 99:630-640. [DOI: 10.1016/j.ijbiomac.2017.03.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 03/05/2017] [Accepted: 03/06/2017] [Indexed: 01/15/2023]
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49
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Abdelhameed AS, Nusrat S, Paliwal S, Zaman M, Zaidi N, Khan RH. A multitechnique approach to probe the interaction of a therapeutic tyrosine kinase inhibitor nintedanib and bovine serum albumin. Prep Biochem Biotechnol 2017; 47:655-663. [DOI: 10.1080/10826068.2016.1275014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ali Saber Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Saima Nusrat
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Sanjhi Paliwal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Masihuz Zaman
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Nida Zaidi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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50
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Siddiqi MK, Alam P, Chaturvedi SK, Nusrat S, Shahein YE, Khan RH. Attenuation of amyloid fibrillation in presence of Warfarin: A biophysical investigation. Int J Biol Macromol 2017; 95:713-718. [DOI: 10.1016/j.ijbiomac.2016.11.110] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 11/26/2016] [Accepted: 11/28/2016] [Indexed: 12/16/2022]
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