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Arman S, Hadavi M, Rezvani-Noghani A, Bakhtparvar A, Fotouhi M, Farhang A, Mokaberi P, Taheri R, Chamani J. Cellulose nanocrystals from celery stalk as quercetin scaffolds: A novel perspective of human holo-transferrin adsorption and digestion behaviours. LUMINESCENCE 2024; 39:e4634. [PMID: 38286605 DOI: 10.1002/bio.4634] [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: 04/18/2023] [Revised: 08/28/2023] [Accepted: 11/04/2023] [Indexed: 01/31/2024]
Abstract
In this study, cellulose nanocrystals (CNCs) were synthesized from celery stalks to be used as the platform for quercetin delivery. Additionally, CNCs and CNCs-quercetin were characterized using the results of scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and zeta potential, while their interactions with human holo-transferrin (HTF) were also investigated. We examined their interaction under physiological conditions through the exertion of fluorescence, resonance light scattering, synchronized fluorescence spectroscopy, circular dichroism, three-dimensional fluorescence spectroscopy, and fluorescence resonance energy transfer techniques. The data from SEM and TEM exhibited the spherical shape of CNCs and CNCs-quercetin and also, a decrease was detected in the size of quercetin-loaded CNCs from 676 to 473 nm that indicated the intensified water solubility of quercetin. The success of cellulose acid hydrolysis was confirmed based on the XRD results. Apparently, the crystalline index of CNCs-quercetin was reduced by the interaction of CNCs with quercetin, which also resulted in the appearance of functional groups, as shown by FTIR. The interaction of CNCs-quercetin with HTF was also demonstrated by the induced quenching in the intensity of HTF fluorescence emission and Stern-Volmer data represent the occurrence of static quenching. Overall, the effectiveness of CNCs as quercetin vehicles suggests its potential suitability for dietary supplements and pharmaceutical products.
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Affiliation(s)
- Samaneh Arman
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Marzieh Hadavi
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | | | - Anashid Bakhtparvar
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Melika Fotouhi
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Ali Farhang
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Parisa Mokaberi
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Reza Taheri
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Jamshidkhan Chamani
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
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2
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John R, Aravindakumar CT, Aravind UK. Delineating the cascade of molecular events in protein aggregation triggered by Glyphosate, aminomethylphosphonic acid, and Roundup in serum albumins. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132158. [PMID: 37567142 DOI: 10.1016/j.jhazmat.2023.132158] [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: 04/18/2023] [Revised: 07/14/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023]
Abstract
The molecular basis of protein unfolding on exposure to the widely used herbicide, Glyphosate (GLY), its metabolite aminomethylphosphonic acid (AMPA), and the commercial formulation Roundup have been probed using human and bovine serum albumins (HSA and BSA). Protein solutions were exposed to chemical stress at set experimental conditions. The study proceeds with spectroscopic and imaging tools. Steady-state and time-resolved fluorescence (TRF) measurements indicated polarity changes with the possibility of forming a ground-state complex. Atomic force microscopy imaging results revealed the formation of fibrils from BSA and dimer, trimer, and tetramer forms of oligomers from HSA under the chemical stress of GLY. In the presence of AMPA, serum albumins (SAs) form a compact network of oligomers. The compact network of oligomers was transformed into fibrils for HSA with increasing concentrations of AMPA. In contrast, Roundup triggered the formation of amorphous aggregates from SAs. Analysis of the Raman amide I band of all aggregates showed a significant increase in antiparallel β-sheet fractions at the expense of α-helix. The highest percentage, 24.6%, of antiparallel β-sheet fractions was present in amorphous aggregate formed from HSA under the influence of Roundup. These results demonstrated protein unfolding, which led to the formation of oligomers and fibrils.
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Affiliation(s)
- Reshmi John
- Inter University Instrumentation Centre (IUIC), India
| | - Charuvila T Aravindakumar
- Inter University Instrumentation Centre (IUIC), India; School of Environmental Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India.
| | - Usha K Aravind
- School of Environmental Studies, Cochin University of Science and Technology (CUSAT), Kochi 682022, Kerala, India.
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Ahmadi Oskooei F, Mehrzad J, Asoodeh A, Motavalizadehkakhky A. Olive oil-based quercetin nanoemulsion (QuNE)'s interactions with human serum proteins (HSA and HTF) and its anticancer activity. J Biomol Struct Dyn 2023; 41:778-791. [PMID: 34919017 DOI: 10.1080/07391102.2021.2012514] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The current study produced Quercetin nanoemulsions (QuNEs) for the purpose of improving Quercetin solubility in an aqueous polar condition and to analyze QuNE-protein formation (QuNE-human serum albumin (HSA) and QuNE-holo-transferrin (HTF)).QuNE was produced by utilizing an ultrasound-based emulsification method and was characterized by DLS, TEM, and SEM. Its interaction with HSA and HTF proteins was studied by analyzing the results of FRET and RLS spectroscopy, Stern-Volmer plotting, the Van't Hoff equation, CD spectroscopy, and molecular docking methods. Finally, QuNE's cytotoxic impact, cell death type induction, and antioxidant properties were evaluated by applying an MTT assay on a human hepatocyte cancer cell (HepG2), measuring Cas-3 gene expression, and conducting a DPPH antioxidant test, respectively. Compared to the non-entrapped Quercetin, Quercetin-entrapped nano-emulsions formed stable complexes with HSA and HTF by improving hydrophilic-hydrophobic interactions. The binding constant (BC), ΔH0, and ΔS0 indices for both the QuNE-HSA and QuNE-HTF complexes were measured at (4.92 × 105 and 11.99 × 104 M-1), (170.96 and -131.19 KJ.mol-1), and (-464.86 and 342.83J.mol-1K-1), respectively.QuNE lowered the HepG2 viability by up-regulating Cas-3 gene expression and thus inducing apoptosis. Moreover, a notable antioxidant impact on the QuNE was detected. Due to its ability in delivering Quercetin to HSA and HTF proteins and stabilizing their protein complexes, QuNE can be used as a suitable primary transporting agent whose formation of stable bio-accessible QuNE-HSA and -HTF protein complexes creates a safe and natural secondary delivery system, which has potential to be used as an efficient anticancer compound.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Farnaz Ahmadi Oskooei
- Department of Biochemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
| | - Jamshid Mehrzad
- Department of Biochemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
| | - Ahmad Asoodeh
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Alireza Motavalizadehkakhky
- Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran.,Advanced Research Center for Chemistry, Biochemistry & Nanomaterial, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
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4
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Ahmadi Oskooei F, Mehrzad J, Asoodeh A, Motavalizadehkakhky A. Multi-spectroscopic characteristics of olive oil-based Quercetin nanoemulsion (QuNE) interactions with calf thymus DNA and its anticancer activity. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Exploring the HSA/DNA/lung cancer cells binding behavior of p-Synephrine, a naturally occurring phenyl ethanol amine with anti-adipogenic activity: multi spectroscopic, molecular dynamic and cellular approaches. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Systematic investigations on the biophysical complexation of hydroxyethyl starch 200/0.5 with human serum albumin. J INCL PHENOM MACRO 2022. [DOI: 10.1007/s10847-022-01155-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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7
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Zhang J, Wang T, Shao W, Huang S, Ma H. Association mechanism of remimazolam-serum albumin nano-drug for potential clinical application. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.01.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Binding of esketamine to human serum albumin for clinical implications. J INCL PHENOM MACRO 2021. [DOI: 10.1007/s10847-021-01090-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Ding F, Peng W, Peng YK, Liu BQ. Elucidating the potential neurotoxicity of chiral phenthoate: Molecular insight from experimental and computational studies. CHEMOSPHERE 2020; 255:127007. [PMID: 32416396 DOI: 10.1016/j.chemosphere.2020.127007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Chiral organophosphorus pollutants are existed ubiquitously in the ecological environment, but the enantioselective toxicities of these nerve agents to humans and their molecular bases have not been fully elucidated. Using experimental and computational approaches, this story was to explore the neurotoxic response process of the target acetylcholinesterase (AChE) to chiral phenthoate and further decipher the microscopic mechanism of such toxicological effect at the enantiomeric level. The results showed that the toxic reaction of AChE with chiral phenthoate exhibited significant enantioselectivity, and (R)-phenthoate (K=1.486 × 105 M-1) has a bioaffinity for the nerve enzyme nearly three times that of (S)-phenthoate (K=4.503 × 104 M-1). Dynamic research outcomes interpreted the wet experiments, and the inherent conformational flexibility of the target enzyme has a great influence on the enantioselective neurotoxicological action processes, especially reflected in the conformational changes of the three key loop regions (i.e. residues His-447, Gly-448, and Tyr-449; residues Gly-122, Phe-123, and Tyr-124; and residues Thr-75, Leu-76, and Tyr-77) around the reaction patch. This was supported by the quantitative results of conformational studies derived from circular dichroism spectroscopy (α-helix: 34.7%→30.2%/31.6%; β-sheet: 23.6%→19.5%/20.7%; turn: 19.2%→22.4%/21.9%; and random coil: 22.5%→27.9%/25.8%). Meanwhile, via analyzing the modes of toxic action and free energies, we can find that (R)-phenthoate has a strong inhibitory effect on the enzymatic activity of AChE, as compared with (S)-phenthoate, and electrostatic energy (-23.79/-17.77 kJ mol-1) played a critical role in toxicological reactions. These points were the underlying causes of chiral phenthoate displaying different degrees of enantioselective neurotoxicity.
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Affiliation(s)
- Fei Ding
- Department of Environmental Science and Engineering, School of Water and Environment, Chang'an University, Xi'an, 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, No. 126 Yanta Road, Yanta District, Xi'an, 710054, China
| | - Wei Peng
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - Yu-Kui Peng
- Center for Food Quality Supervision, Inspection & Testing, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, 712100, China
| | - Bing-Qi Liu
- Department of Agricultural Chemistry, Qingdao Agricultural University, Qingdao, 266109, China
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Sharma V, Yañez O, Zúñiga C, Kumar A, Singh G, Cantero-López P. Protein-surfactant interactions: A multitechnique approach on the effect of Co-solvents over bovine serum albumin (BSA)-cetyl pyridinium chloride (CPC) system. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137349] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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11
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Mohammadgholi A, Leilabadi-Asl A, Divsalar A, Eslami-Moghadam M. Multi-spectroscopic studies of the interaction of new synthesized platin complex with human carrier protein of serum albumin. J Biomol Struct Dyn 2020; 39:1506-1511. [PMID: 32200700 DOI: 10.1080/07391102.2020.1745690] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Previous reports have shown that protein-drug interaction helps to improve the pharmacokinetics of the drugs. Human serum albumin (HSA) is one of the basic components of blood plasma and it serves as a storage and carrier protein. In the present study, the interaction of a new synthesized Pt [iso]2 complex (cis - [Pt(NH2-Isopentylamine)2(Isopentylglycine)]NO3) with HSA was studied using the spectroscopic methods of fluorescence and circular dichroic (CD) at two different temperatures of 25 and 37 °C. Analysis of the quenching mechanism via Stern-Volmer curve, determination of HSA binding parameters (0.65 × 104 and 2.27 × 104) and standard Gibbs free energy (-25.8, and 21.77) at 25 and 37 °C, respectively, carried out using fluorescence quenching data. Data analysis showed that the static mechanism has the main role in fluorescence quenching. Also, the number of protein binding sites for complex indicated one binding site at two temperatures of 25 and 37 °C. The secondary structure of protein in the presence of different concentrations of Pt(II) complex did not show any significant alterations. Whereas, thermal stability of the HSA was reduced in the presence of complex. Also, thermal analysis obtained the values of ΔG°25 for HSA and HSA in presence of Pt [Iso]2 20, 13, respectively. According to the above results, we concluded that the new synthesized Pt complex can bind to the blood carrier protein of HSA and change the stability of it which can be considered in the design of new drugs.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Azadeh Mohammadgholi
- Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Amineh Leilabadi-Asl
- Faculty of Biological Sciences, Department of Cell & Molecular Sciences, Kharazmi University, Tehran, Iran
| | - Adeleh Divsalar
- Faculty of Biological Sciences, Department of Cell & Molecular Sciences, Kharazmi University, Tehran, Iran
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12
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Sharifi-Rad A, Mehrzad J, Darroudi M, Saberi MR, Chamani J. Oil-in-water nanoemulsions comprising Berberine in olive oil: biological activities, binding mechanisms to human serum albumin or holo-transferrin and QMMD simulations. J Biomol Struct Dyn 2020; 39:1029-1043. [PMID: 32000592 DOI: 10.1080/07391102.2020.1724568] [Citation(s) in RCA: 158] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Berberine is widely used in traditional Iranian medicine to treat diabetes and inflammatory conditions. This study was aimed at developing a method for the preparation of Berberine nanoparticles (Nano-Ber) in order to improve its aqueous-phase solubility and its complex formation with human serum albumin (HSA) and holo-transferrin (HTF) from the viewpoint of interaction behavior. Nano-Ber was prepared with olive oil as the oil phase, Tween 80 as the surfactant and Span 60 as the co-surfactant. Nano-Ber was obtained with a spherical shape and a mean particle size of 43.7 ± 3.6 nm, with an optimal oil:surfactant:co-surfactant ratio of 1:2:2, w/w/w. The antioxidant activity of Nano-Ber in comparison with Berberine was tested using DPPH and it was found that Nano-Ber had a large antioxidant activity. The cytotoxicity effects of Nano-Ber and Berberine on HepG2 were compared by MTT assay and detected in the treated HepG2 cells at concentrations up to 0.1 mM. The binding constants of HSA-Nano-Ber and HTF-Nano-Ber complexes formation were (2.93 ± 0.02) × 104 and (9.62 ± 0.03) × 103 M -1, respectively. Hydrogen bonds and van der Waals interactions were the predominant forces in the HSA-Nano-Ber and HTF-Nano-Ber complexes, and the process of Nano-Ber binding HSA and HTF was driven by ΔH 0 = -122.76 kJ mol-1, ΔS 0 = -325.49 J mol-1K-1 for HSA and ΔH 0 = -125.09 kJ mol-1, ΔS 0 = -43.37 J mol-1K-1 for HTF. The results of the simulation demonstrated that the Nano-Ber molecules were stabilized on the surface of final aggregates through both hydrophilic and hydrophobic interactions. Communicated by Ramaswamy Sarma.
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Affiliation(s)
- Atena Sharifi-Rad
- Department of Biochemistry, Faculty of Sciences, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
| | - Jamshid Mehrzad
- Department of Biochemistry, Faculty of Sciences, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
| | - Majid Darroudi
- Nuclear Medicine Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Reza Saberi
- Department of Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Jamshidkhan Chamani
- Department of Biology, Faculty of Sciences, Mashhad Branch, Islamic Azad University, Mashhad, Iran
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13
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Chanphai P, Tajmir-Riahi H. Conjugation of citric acid and gallic acid with serum albumins: Acid binding sites and protein conformation. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112178] [Citation(s) in RCA: 12] [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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14
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Chanphai P, Cloutier F, Oufqir Y, Leclerc MF, Eiján AM, Reyes-Moreno C, Bérubé G, Tajmir-Riahi HA. Biomolecular study and conjugation of two para-aminobenzoic acid derivatives with serum proteins: drug binding efficacy and protein structural analysis. J Biomol Struct Dyn 2020; 39:79-90. [PMID: 31980010 DOI: 10.1080/07391102.2020.1719889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Two aminobenzoic acid derivatives DAB-0 and DAB-1 showed distinct biological properties on murine bladder cancer (BCa) cell line MB49-I. In contrast to DAB-1, DAB-0 does not possess any anti-inflammatory activity and is less toxic. Furthermore, DAB-0 does not interfere with INFγ-induced STAT1 activation and TNFα-induced IκB phosphorylation, while DAB-1 does. In order to rationalize these results, the binding efficacy of DAB-0 and DAB-1 with serum proteins such a human serum albumin (HSA), bovine serum albumin (BSA) and beta-lactoglobulin (β-LG) was investigated in aqueous solution at physiological pH. Multiple spectroscopic methods and thermodynamic analysis were used to determine the binding efficacy of DAB-0 and DAB-1 with serum proteins. Drug-protein conjugation was observed via through ionic contacts. DAB-1 forms stronger adducts than DAB-0, while β-LG shows more affinity with the order of stability β-LG > BSA > HSA. The stronger complexation of DAB-1 with serum proteins might account for its biological potential and transport in the blood. The binding efficacy ranged from 40 to 60%. Major alterations of protein secondary structures were detected upon drug complexation. Serum proteins are capable of delivering DAB-1 in vitro.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- P Chanphai
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada
| | - F Cloutier
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada.,Groupe de Recherche en Signalisation Cellulaire, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Y Oufqir
- Groupe de Recherche en Signalisation Cellulaire, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada.,Department of Medical Biology, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada
| | - M-F Leclerc
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada.,Groupe de Recherche en Signalisation Cellulaire, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada
| | - A M Eiján
- Facultad de Medicina, Universidad de Buenos Aires, Ciudad De Buenos Aires, Argentina
| | - C Reyes-Moreno
- Groupe de Recherche en Signalisation Cellulaire, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada.,Department of Medical Biology, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada
| | - G Bérubé
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada.,Groupe de Recherche en Signalisation Cellulaire, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada
| | - H A Tajmir-Riahi
- Department of Chemistry, Biochemistry and Physics, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada
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15
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Understanding the bioconjugation reaction of phenthoate with human serum albumin: New insights from experimental and computational approaches. Toxicol Lett 2019; 314:124-132. [DOI: 10.1016/j.toxlet.2019.07.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/11/2019] [Accepted: 07/26/2019] [Indexed: 12/19/2022]
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16
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Second-generation testosterone-platinum(II) hybrids for site-specific treatment of androgen receptor positive prostate cancer: Design, synthesis and antiproliferative activity. Eur J Med Chem 2019; 179:660-666. [DOI: 10.1016/j.ejmech.2019.06.090] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/13/2019] [Accepted: 06/28/2019] [Indexed: 12/12/2022]
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17
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Chanphai P, Tajmir-Riahi H. Conjugation of vitamin C with serum proteins: A potential application for vitamin delivery. Int J Biol Macromol 2019; 137:966-972. [DOI: 10.1016/j.ijbiomac.2019.07.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/06/2019] [Accepted: 07/07/2019] [Indexed: 11/27/2022]
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18
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Chanphai P, Bariyanga J, Bérubé G, Tajmir-Riahi HA. Complexation of cis-Pt and trans-Pt(NH 3) 2Cl 2 with serum proteins: A potential application for drug delivery. J Biomol Struct Dyn 2019; 38:2777-2783. [PMID: 31402755 DOI: 10.1080/07391102.2019.1654408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
AbbreviationsHAShuman serum albuminBSAbovine serum albuminβ-LGbeta-lactoglobulincis-Pt and trans-PtPt(NH3)2Cl2FTIRFourier transform infraredCommunicated by Ramaswamy H. Sarma.
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Affiliation(s)
- P Chanphai
- Department of Chemistry, Biochemistry and Physics
| | - J Bariyanga
- Division of Humanities: Math/Sciences, University of Hawai'i e West O'ahu, Kapolei, HI, USA
| | - G Bérubé
- Department of Chemistry, Biochemistry and Physics.,Groupe de Recherche en Signalisation Cellulaire, University of Québec at Trois-Rivières, Trois-Rivières, Québec, Canada
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19
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Testo and testo-Pt(II) bind DNA at different locations. Chem Biol Interact 2018; 296:179-184. [PMID: 30253125 DOI: 10.1016/j.cbi.2018.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 08/27/2018] [Accepted: 09/17/2018] [Indexed: 01/27/2023]
Abstract
The development of new targeted anticancer agents able to efficiently and specifically destroy cancer cells with minimal toxic side effects is nowadays a subject of intensive research endeavors. We report the conjugation of testo and testo-Pt(II) (two semi-synthetic testosterone derivatives) with calf thymus DNA in aqueous solution at physiological pH. Multiple spectroscopic methods, thermodynamic analysis and modeling were used to determine the binding efficacy of these drugs to DNA duplex. Thermodynamic parameters showed drug-DNA conjugation occurs via ionic interactions with testo-Pt(II) forming more stable DNA adducts than testo with Ktesto-DNA = 1.80 (±0.5) x 105 M-1 and Ktesto-Pt(II)-DNA = 2.3 (±0.8) x 105 M-1. Molecular modeling shows that testo and testo-Pt(II) bind DNA at different locations.
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