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Tongkanarak K, Loupiac C, Neiers F, Chambin O, Srichana T. Evaluating the biomolecular interaction between delamanid/formulations and human serum albumin by fluorescence, CD spectroscopy and SPR: Effects on protein conformation, kinetic and thermodynamic parameters. Colloids Surf B Biointerfaces 2024; 239:113964. [PMID: 38761495 DOI: 10.1016/j.colsurfb.2024.113964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/27/2024] [Accepted: 05/10/2024] [Indexed: 05/20/2024]
Abstract
Delamanid is an anti-tuberculosis drug used for the treatment of drug-resistant tuberculosis. Since delamanid has a high protein bound potential, even patients with low albumin levels should experience high and rapid delamanid clearance. However, the interaction between delamanid and albumin should be better controlled to optimize drug efficacy. This study was designed to evaluate the binding characteristics of delamanid to human serum albumin (HSA) using various methods: fluorescence spectroscopy, circular dichroism (CD), surface plasmon resonance (SPR), and molecular docking simulation. The fluorescence emission band without any shift indicated the interaction was not affected by the polarity of the fluorophore microenvironment. The reduction of fluorescence intensity at 344 nm was proportional to the increment of delamanid concentration as a fluorescence quencher. UV-absorbance measurement at the maximum wavelength (λmax, 280 nm) was evaluated using inner filter effect correction. The HSA conformation change was explained by the intermolecular energy transfer between delamanid and HSA during complex formation. The study, which was conducted at temperatures of 298 K, 303 K, and 310 K, revealed a static quenching mechanism that correlated with a decreased of bimolecular quenching rate constant (kq) and binding constant (Ka) at increased temperatures. The Ka was 1.75-3.16 × 104 M-1 with a specific binding site with stoichiometry 1:1. The negative enthalpy change, negative entropy change, and negative Gibbs free energy change demonstrated an exothermic-spontaneous reaction while van der Waals forces and hydrogen bonds played a vital role in the binding. The molecular displacement approach and molecular docking confirmed that the binding occurred mainly in subdomain IIA, which is a hydrophobic pocket of HSA, with a theoretical binding free energy of -9.33 kcal/mol. SPR exhibited a real time negative sensorgram that resulted from deviation of the reflex angle due to ligand delamanid-HSA complex forming. The binding occurred spontaneously after delamanid was presented to the HSA surface. The SPR mathematical fitting model revealed that the association rate constant (kon) was 2.62 × 108 s-1M-1 and the dissociation rate constant (koff) was 5.65 × 10-3 s-1. The complexes were performed with an association constant (KA) of 4.64 × 1010 M-1 and the dissociation constant (KD) of 2.15 × 10-11 M. The binding constant indicated high binding affinity and high stability of the complex in an equilibrium. Modified CD spectra revealed that conformation of the HSA structure was altered by the presence of delamanid during preparation of the proliposomes that led to the reduction of secondary structure stabilization. This was indicated by the percentage decrease of α-helix. These findings are beneficial to understanding delamanid-HSA binding characteristics as well as the drug administration regimen.
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Affiliation(s)
- Krittawan Tongkanarak
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Camille Loupiac
- Univ. Bourgogne Franche - Comté, L'Institut Agro, Université de Bourgogne, INRAE, UMR PAM 1517, Joint Unit Food Processing and Microbiology, Food and Wine Physico-Chemistry Unit, 1 esplanade Erasme, Dijon 21000, France
| | - Fabrice Neiers
- Flavour Perception: Molecular Mechanisms (Flavours), Université de Bourgogne, 7 bd Jeanne d'Arc, Dijon 21000, France
| | - Odile Chambin
- Univ. Bourgogne Franche - Comté, L'Institut Agro, Université de Bourgogne, INRAE, UMR PAM 1517, Joint Unit Food Processing and Microbiology, Food and Wine Physico-Chemistry Unit, 1 esplanade Erasme, Dijon 21000, France; Department of Pharmaceutical Technology, Faculty of Health Sciences, Université de Bourgogne, 7 bd Jeanne d'Arc, Dijon Cedex 21079, France
| | - Teerapol Srichana
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
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2
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Nemergut M, Sedláková D, Fabriciová G, Belej D, Jancura D, Sedlák E. Explanation of inconsistencies in the determination of human serum albumin thermal stability. Int J Biol Macromol 2023; 232:123379. [PMID: 36702231 DOI: 10.1016/j.ijbiomac.2023.123379] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/15/2023] [Accepted: 01/18/2023] [Indexed: 01/24/2023]
Abstract
Thermal denaturation of human serum albumin has been the subject of many studies in recent decades, but the results of these studies are often conflicting and inconclusive. To clarify this, we combined different spectroscopic and calorimetric techniques and performed an in-depth analysis of the structural changes that occur during the thermal unfolding of different conformational forms of human serum albumin. Our results showed that the inconsistency of the results in the literature is related to the different quality of samples in different batches, methodological approaches and experimental conditions used in the studies. We confirmed that the presence of fatty acids (FAs) causes a more complex process of the thermal denaturation of human serum albumin. While the unfolding pathway of human serum albumin without FAs can be described by a two-step model, consisting of subsequent reversible and irreversible transitions, the thermal denaturation of human serum albumin with FAs appears to be a three-step process, consisting of a reversible step followed by two consecutive irreversible transitions.
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Affiliation(s)
- Michal Nemergut
- Center for Interdisciplinary Biosciences, P. J. Šafárik University in Košice, Jesenná 5, 04154 Košice, Slovakia
| | - Dagmar Sedláková
- Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia
| | - Gabriela Fabriciová
- Department of Biophysics, Faculty of Science, P. J. Šafárik University in Košice, Jesenná 5, 04154 Košice, Slovakia
| | - Dominik Belej
- Department of Biophysics, Faculty of Science, P. J. Šafárik University in Košice, Jesenná 5, 04154 Košice, Slovakia
| | - Daniel Jancura
- Department of Biophysics, Faculty of Science, P. J. Šafárik University in Košice, Jesenná 5, 04154 Košice, Slovakia
| | - Erik Sedlák
- Center for Interdisciplinary Biosciences, P. J. Šafárik University in Košice, Jesenná 5, 04154 Košice, Slovakia; Department of Biochemistry, Faculty of Science, P. J. Šafárik University in Košice, Moyzesova 11, 04154 Košice, Slovakia.
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3
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Ferretti V, Matos CP, Canelas C, Pessoa JC, Tomaz AI, Starosta R, Correia I, León IE. New ternary Fe(III)-8-hydroxyquinoline-reduced Schiff base complexes as selective anticancer drug candidates. J Inorg Biochem 2022; 236:111961. [PMID: 36049258 DOI: 10.1016/j.jinorgbio.2022.111961] [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: 04/26/2022] [Revised: 07/04/2022] [Accepted: 08/09/2022] [Indexed: 12/24/2022]
Abstract
Due to the growing prevalence of cancer diseases, new therapeutic options are urgently needed, and drugs based on metal ions other than platinum are alternatives with exciting possibilities. We report the synthesis, characterization and biological effect of mixed-ligand Fe(III)-aminophenolate complexes derived from salicylaldehyde and L-tryptophan with quinoline derivatives as co-ligands, namely 8-hydroxyquinoline (8HQ), [Fe(L)(8HQ)(H2O)] (1) and its 5-cloro derivative (Cl8HQ), [Fe(L)(Cl8HQ)(H2O)] (2). The complex bearing the aminophenolate and lacking the quinoline co-ligand, [Fe(L)(Cl)(H2O)2] (3), was prepared for comparison. The analytical and spectroscopic characterization revealed that 1 and 2 are octahedral Fe(III) complexes with the aminophenolate acting as a dianionic tridentate ligand and 8HQ co-ligands as bidentate chelates. Spectroscopic techniques and molecular docking studies were used to evaluate the ability of these complexes to bind bovine serum albumin (BSA) and calf thymus DNA. Complex 2 [Fe(L)(Cl8HQ)(H2O)] was the one showing higher affinity for both biomolecules. Cell viability was assessed in breast, colorectal and bone human cancer cell lines. 1 and 2 were found to be more active than cisplatin in all cell lines tested. A non-tumoral fibroblast line (L929, mouse non-tumoral fibroblasts) was used to evaluate selectivity. The results evidence that 2 shows much higher selectivity than 1 in all cell lines tested, but particularly in bone cancer cells in which selectivity index (SI) values are 8.0 and 18.8 for 1 and 2, respectively.
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Affiliation(s)
- Valeria Ferretti
- CEQUINOR (UNLP, CCT-CONICET La Plata, asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N° 1465, La Plata 1900, Argentina
| | - Cristina P Matos
- Centro de Ciências e Tecnologias Nucleares and Departamento de Ciências e Engenharia Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal; Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Engenharia Química, Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Catarina Canelas
- Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - João Costa Pessoa
- Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Engenharia Química, Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Ana Isabel Tomaz
- Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Radosław Starosta
- Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal; Faculty of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Isabel Correia
- Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Engenharia Química, Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal.
| | - Ignacio E León
- CEQUINOR (UNLP, CCT-CONICET La Plata, asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N° 1465, La Plata 1900, Argentina.
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4
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Monitoring the effect of SDS on the solvation dynamics and structural conformation of β-casein. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02092-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Lemke N, El-Khatib AH, Tchipilov T, Jakubowski N, Weller MG, Vogl J. Procedure providing SI-traceable results for the calibration of protein standards by sulfur determination and its application on tau. Anal Bioanal Chem 2022; 414:4441-4455. [PMID: 35316347 PMCID: PMC9142460 DOI: 10.1007/s00216-022-03974-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/04/2022] [Accepted: 02/10/2022] [Indexed: 11/20/2022]
Abstract
Quantitative proteomics is a growing research area and one of the most important tools in the life sciences. Well-characterized and quantified protein standards are needed to achieve accurate and reliable results. However, only a limited number of sufficiently characterized protein standards are currently available. To fill this gap, a method for traceable protein quantification using sulfur isotope dilution inductively coupled plasma mass spectrometry (ICP-MS) was developed in this study. Gel filtration and membrane filtration were tested for the separation of non-protein-bound sulfur in the protein solution. Membrane filtration demonstrated a better performance due to the lower workload and the very low sulfur blanks of 11 ng, making it well suited for high-purity proteins such as NIST SRM 927, a bovine serum albumin (BSA). The method development was accomplished with NIST SRM 927e and a commercial avidin. The quantified mass fraction of NIST SRM 927e agreed very well with the certified value and showed similar uncertainties (3.6%) as established methods while requiring less sample preparation and no species-specific standards. Finally, the developed procedure was applied to the tau protein, which is a biomarker for a group of neurodegenerative diseases denoted “tauopathies” including, e.g., Alzheimer’s disease and frontotemporal dementia. For the absolute quantification of tau in the brain of transgenic mice overexpressing human tau, a well-defined calibration standard was needed. Therefore, a pure tau solution was quantified, yielding a protein mass fraction of (0.328 ± 0.036) g/kg, which was confirmed by amino acid analysis.
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Affiliation(s)
- Nora Lemke
- , Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489, Berlin, Germany.,Charité - Universitätsmedizin Berlin, Hessische Str. 3-4, 10115, Berlin, Germany
| | - Ahmed H El-Khatib
- , Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489, Berlin, Germany.,Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Teodor Tchipilov
- , Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489, Berlin, Germany
| | | | - Michael G Weller
- , Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489, Berlin, Germany
| | - Jochen Vogl
- , Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489, Berlin, Germany.
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6
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Kaur A, Piplani S, Kaushik D, Fung J, Sakala IG, Honda-Okubo Y, Mehta SK, Petrovsky N, Salunke DB. Stereoisomeric Pam2CS Based TLR2 Agonists: Synthesis, Structural Modelling and Activity as Vaccine Adjuvants. RSC Med Chem 2022; 13:622-637. [PMID: 35694694 PMCID: PMC9132229 DOI: 10.1039/d1md00372k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 04/12/2022] [Indexed: 11/21/2022] Open
Abstract
Lipopeptides including diacylated Pam2CSK4 as well as triacylated Pam3CSK4 act as ligands of Toll-like receptor (TLR)-2, a promising target for the development of vaccine adjuvants. The highly investigated Pam2CSK4 and...
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Affiliation(s)
- Arshpreet Kaur
- Department of Chemistry and Centre for Advanced Studies, Panjab University Chandigarh India
| | - Sakshi Piplani
- Vaxine Pty Ltd Warradale Australia
- College of Medicine and Public Health, Flinders University Adelaide Australia
| | - Deepender Kaushik
- Department of Chemistry and Centre for Advanced Studies, Panjab University Chandigarh India
| | - Johnson Fung
- Vaxine Pty Ltd Warradale Australia
- College of Medicine and Public Health, Flinders University Adelaide Australia
| | - Isaac G Sakala
- Vaxine Pty Ltd Warradale Australia
- College of Medicine and Public Health, Flinders University Adelaide Australia
| | - Yoshikazu Honda-Okubo
- Vaxine Pty Ltd Warradale Australia
- College of Medicine and Public Health, Flinders University Adelaide Australia
| | - Surinder K Mehta
- Department of Chemistry and Centre for Advanced Studies, Panjab University Chandigarh India
| | - Nikolai Petrovsky
- Vaxine Pty Ltd Warradale Australia
- College of Medicine and Public Health, Flinders University Adelaide Australia
| | - Deepak B Salunke
- Department of Chemistry and Centre for Advanced Studies, Panjab University Chandigarh India
- National Interdisciplinary Centre of Vaccines, Immunotherapeutics and Antimicrobials, Panjab University Chandigarh India
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7
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Chernysheva MG, Shnitko AV, Skrabkova HS, Badun GA. Peculiarities of alkylamidopropyldimethylbenzylammonium (Miramistin) in the relationship to lysozyme in comparison with quaternary ammonium surfactants: Coadsorption at the interfaces, enzymatic activity and molecular docking. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Serum Albumin: A Multifaced Enzyme. Int J Mol Sci 2021; 22:ijms221810086. [PMID: 34576249 PMCID: PMC8466385 DOI: 10.3390/ijms221810086] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 02/06/2023] Open
Abstract
Human serum albumin (HSA) is the most abundant protein in plasma, contributing actively to oncotic pressure maintenance and fluid distribution between body compartments. HSA acts as the main carrier of fatty acids, recognizes metal ions, affects pharmacokinetics of many drugs, provides the metabolic modification of some ligands, renders potential toxins harmless, accounts for most of the anti-oxidant capacity of human plasma, and displays esterase, enolase, glucuronidase, and peroxidase (pseudo)-enzymatic activities. HSA-based catalysis is physiologically relevant, affecting the metabolism of endogenous and exogenous compounds including proteins, lipids, cholesterol, reactive oxygen species (ROS), and drugs. Catalytic properties of HSA are modulated by allosteric effectors, competitive inhibitors, chemical modifications, pathological conditions, and aging. HSA displays anti-oxidant properties and is critical for plasma detoxification from toxic agents and for pro-drugs activation. The enzymatic properties of HSA can be also exploited by chemical industries as a scaffold to produce libraries of catalysts with improved proficiency and stereoselectivity for water decontamination from poisonous agents and environmental contaminants, in the so called “green chemistry” field. Here, an overview of the intrinsic and metal dependent (pseudo-)enzymatic properties of HSA is reported to highlight the roles played by this multifaced protein.
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A Comprehensive Spectroscopic Analysis of the Ibuprofen Binding with Human Serum Albumin, Part II. Sci Pharm 2021. [DOI: 10.3390/scipharm89030030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Human serum albumin (HSA) is the most abundant human plasma protein. HSA plays a crucial role in many binding endos- and exogenous substances, which affects their pharmacological effect. The innovative aspect of the study is not only the interaction of fatted (HSA) and defatted (dHSA) human serum albumin with ibuprofen (IBU), but the analysis of the influence of temperature on the structural modifications of albumin and the interaction between the drug and proteins from the temperature characteristic of near hypothermia (308 K) to the temperature reflecting inflammation in the body (312 K and 314 K). Ibuprofen is a non-steroidal anti-inflammatory drug. IBU is used to relieve acute pain, inflammation, and fever. To determine ibuprofen’s binding site in the tertiary structure of HSA and dHSA, fluorescence spectroscopy was used. On its basis, the fluorescent emissive spectra of albumin (5 × 10−6 mol/dm3) without and with the presence of ibuprofen (1 × 10−5–1 × 10−4 mol/dm3) was recorded. The IBU-HSA complex’s fluorescence was excited by radiation of wavelengths of λex 275 nm and λex 295 nm. Spectrophotometric spectroscopy allowed for recording the absorbance spectra (zero-order and second derivative absorption spectra) of HSA and dHSA under the influence of ibuprofen (1 × 10−4 mol/dm3). To characterize the changes of albumin structure the presence of IBU, circular dichroism was used. The data obtained show that the presence of fatty acids and human serum albumin temperature influences the strength and type of interaction between serum albumin and drug. Ibuprofen binds more strongly to defatted human serum albumin than to albumin in the presence of fatty acids. Additionally, stronger complexes are formed with increasing temperatures. The competitive binding of ibuprofen and fatty acids to albumin may influence the concentration of free drug fraction and thus its therapeutic effect.
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Maalej A, Elloumi W, Angelov I, Kardaleva P, Dimitrov V, Chamkha M, Guncheva M, Sayadi S. Pistacia lentiscus by-product as a promising source of phenolic compounds and carotenoids: Purification, biological potential and binding properties. FOOD AND BIOPRODUCTS PROCESSING 2021. [DOI: 10.1016/j.fbp.2021.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Reversible Dimerization of Human Serum Albumin. Molecules 2020; 26:molecules26010108. [PMID: 33383640 PMCID: PMC7795135 DOI: 10.3390/molecules26010108] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 12/24/2020] [Accepted: 12/25/2020] [Indexed: 12/28/2022] Open
Abstract
Pulsed Dipolar Spectroscopy (PDS) methods of Electron Paramagnetic Resonance (EPR) were used to detect and characterize reversible non-covalent dimers of Human Serum Albumin (HSA), the most abundant protein in human plasma. The spin labels, MTSL and OX063, were attached to Cys-34 and these chemical modifications of Cys-34 did affect the dimerization of HSA, indicating that other post-translational modifications can modulate dimer formation. At physiologically relevant concentrations, HSA does form weak, non-covalent dimers with a well-defined structure. Dimer formation is readily reversible into monomers. Dimerization is very relevant to the role of HSA in the transport, binding, and other physiological processes.
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Khanna S, Singh AK, Behera SP, Gupta S. Thermoresponsive BSA hydrogels with phase tunability. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111590. [PMID: 33321635 DOI: 10.1016/j.msec.2020.111590] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 09/22/2020] [Accepted: 09/26/2020] [Indexed: 12/26/2022]
Abstract
Amyloids are fibrillar structures formed due to protein aggregation or misfolding when the molecules undergo a conformational change from α-helix to β-sheet. Although this self-assembly is associated with many neurodegenerative diseases in vivo, the highly ordered amyloidic structures formed in vitro are ideal scaffolds for many bionanotechnological applications. Amyloid fibrillar networks under specific stimuli can also form stable hydrogels. We have used bovine serum albumin (BSA) as a model amyloidogenic protein to obtain thermally-induced hydrogels that display tunable sol-gel-sol transitions spanning over minutes to days. High concentrations of BSA (14-22% w/v) were heated at 65 °C for less than 3 min without any cross-linking agent to yield soft, injectable gels that were non-toxic to mammalian cells. A detailed investigation of temperature, concentration, incubation time and ionic strength on the formation and reversal of these gels was carried out using visual inspection, rheology, electron microscopy, fluorescence spectroscopy, UV-visible spectroscopy and circular dichroism spectroscopy. The optimum gelation temperature (Tg) for phase reversal of BSA gels was found to lie between 60 and 70 °C. An increase in protein concentration led to a reduction in the gelation time and increase in the gel-to-rev sol transition time. Gels heated for longer duration than their minimum gelation time yielded irreversible gels suggesting that low incubation periods were favourable for partial protein denaturation and hydrogel formation. This was supported by time-resolved secondary and tertiary structural ensemble studies. Further, the hydrogel networks demonstrated a zero-order drug release kinetics and the rev sol was found to be cytocompatible with HaCaT skin cell lines. Overall, our approach demonstrates rapid, crosslinker-free thermoresponsive BSA gelation with wide tunability and control on the time and material property, ideal for topical drug delivery applications.
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Affiliation(s)
- Shruti Khanna
- Dept. of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Ajay Kumar Singh
- Dept. of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Soumya Prakash Behera
- Dept. of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Shalini Gupta
- Dept. of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
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Akram M, Ansari F, Qais FA, Kabir-ud-Din. Binding of cationic Cm-E2O-Cm gemini surfactants with human serum albumin and the role of β-cyclodextrin. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113365] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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14
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Srivastava R, Alam MS. Spectroscopic studies of the aggregation behavior of Human Serum Albumin and cetyltrimethylammonium bromide. Int J Biol Macromol 2020; 158:394-400. [PMID: 32380109 DOI: 10.1016/j.ijbiomac.2020.04.254] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 11/22/2022]
Abstract
To check the role of micelle in the interaction studies of human serum albumin (HSA) and cetyltrimethylammonium bromide (CTAB), many spectroscopic techniques, like UV-visible, fluorescence, circular dichroism, fluorescence lifetime measurement, and atomic force microscopy (AFM), are employed. The binding affinity of all compound groups depended on the hydrocarbon chain, indicating the predominant role of hydrophobic forces, electrostatic forces and supported by polar interactions on protein surfaces. The protein has a different effect on the polarity of a microenvironment in fluorescence spectra above and below the critical micelle concentration (CMC) of the suractant. The far-UV-CD spectra show unfolding below the CMC and refolding above the CMC. The binding of the surfactant induces changes in the microenvironment at different pHs around the residues of the aromatic amino acid and the disulfide bond of protein. The AFM images show significant changes in the protein's structure. AFM images show dense aggregation below the CMC and above the CMC, some net-like structure formed in the HSA-CTAB complex. To test the experimental results, we used Auto dock Vina to conduct molecular docking. Above and below the CMC, structural changes can be seen.
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Affiliation(s)
- Rachana Srivastava
- Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Polymer Science &Technology Laboratory, Chennai 600020, India
| | - Md Sayem Alam
- Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Polymer Science &Technology Laboratory, Chennai 600020, India; Chemical Science, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh- 201 002, India.
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15
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Valojerdi FM, Farasat A, Shariatifar H, Gheibi N. Study of HSA interactions with arachidonic acid using spectroscopic methods revealing molecular dynamics of HSA-AA interactions. Biomed Rep 2020; 12:125-133. [PMID: 32042421 PMCID: PMC7006104 DOI: 10.3892/br.2019.1270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 09/20/2019] [Indexed: 12/14/2022] Open
Abstract
The interaction between human serum albumin (HSA) and arachidonic acid (AA) as an unsaturated fatty acid were investigated in the present study using methods including UV-VIS spectrophotometry, fluorescence and circular dichroism (CD) spectroscopy, lifetime measurements, fluorescence anisotropy measurements and visual molecular dynamics (MD). The thermodynamic parameters were assessed from HSA thermal and chemical denaturation in the presence and absence of AA. From the thermal denaturation, the Tm and ΔG˚(298K) magnitudes obtained were 327.7 K and 88 kJ/mol, respectively, for HSA alone, and 323.4 K and 85 kJ/mol, respectively, following treatment with a 10 µM AA concentration. The same manner of reduction in Gibbs free energy as a criterion of protein stability was achieved during chemical denaturation by urea in the presence of AA. The present study investigates HSA binding nature through MD approaches, and the results indicated that the binding affinity of AA to the subdomain IIA of HSA is greater compared with that of subdomain IIIA. Although the HSA regular secondary structure evaluation by CD exhibited a minor change following incubation with AA, its tertiary structure revealed an observable fluctuation. Thus, it appears that the interaction between AA and HSA requires minor instability and partial structural changes.
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Affiliation(s)
| | - Alireza Farasat
- Cellular and Molecular Research Center, Qazvin University of Medical Sciences, Qazvin 3419915315, Iran
| | - Hanifeh Shariatifar
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj 6618634683, Iran
| | - Nematollah Gheibi
- Cellular and Molecular Research Center, Qazvin University of Medical Sciences, Qazvin 3419915315, Iran
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16
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Ishtikhar M, Siddiqui Z, Husain FM, Khan RA, Hassan I. Comparative refolding of guanidinium hydrochloride denatured bovine serum albumin assisted by cationic and anionic surfactants via artificial chaperone protocol: Biophysical insight. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 225:117510. [PMID: 31520999 DOI: 10.1016/j.saa.2019.117510] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/28/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
In the present study, we report the cooperative refolding/renaturation behaviour of guanidinium hydrochloride (GdnHCl) denatured bovine serum albumin (BSA) in the presence of cationic surfactant cetyltrimethylammonium bromide (CTAB), anionic surfactant sodium dodecyl sulphate (SDS) and their catanionic mixture in the solution of 60 mM sodium phosphate buffer of physiological pH 7.4, using artificial chaperone-assisted two-step method. Here, we have employed biophysical techniques to characterize the refolding mechanism of denatured BSA after 200 times of dilution in the presence of cationic, anionic surfactants and their catanionic mixture, separately. We have found that minimum refolding of diluted BSA in the presence of 1:1 rational mixture of CTAB and SDS (CTAB/SDS = 50/50), it may be due to the micelles formation which is responsible for the unordered microstructure aggregate formation. Other mixtures (CTAB/SDS = 20/80 and 80/20) slightly played an effective role during refolding process in the presence of methyl-β-cyclodextrin. On other hand, CTAB and SDS are more effective and reflect a good renaturation tendency of denatured BSA solution separately and in existence of methyl-β-cyclodextrin as compare to their mixture compositions. But overall, CTAB has the better renaturation tendency as compare to SDS in the existence of methyl-β-cyclodextrin. These results ascribed the presence of charge head group and length of hydrophobic tail of CTAB surfactant that plays an important task during electrostatic and hydrophobic interactions at pH 7.4 at which BSA carries negative charge on their surface. These biophysical parameters suggest that, CTAB surfactant assisted artificial chaperone protocol may be utilized in the protein renaturation/refolding studies, which may address the associated problems of biotechnological industries for the development of efficient and inexpensive folding aides, which may also be used to produced genetically engineered cells related diseases, resulting from protein misfolding/aggregation.
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Affiliation(s)
- Mohd Ishtikhar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Zeba Siddiqui
- Department of Biosciences, Integral University, Lucknow 226026, India
| | - Fohad Mabood Husain
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, 2460, Riyadh 11451, Saudi Arabia
| | - Rais Ahmad Khan
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Iftekhar Hassan
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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17
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Oxidative Modifications in Advanced Atherosclerotic Plaques: A Focus on In Situ Protein Sulfhydryl Group Oxidation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6169825. [PMID: 31998439 PMCID: PMC6973184 DOI: 10.1155/2020/6169825] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/17/2019] [Accepted: 12/26/2019] [Indexed: 12/21/2022]
Abstract
Although oxidative stress has been long associated with the genesis and progression of the atherosclerotic plaque, scanty data on its in situ effects on protein sulfhydryl group modifications are available. Within the arterial wall, protein sulfhydryls and low-molecular-weight (LMW) thiols are involved in the cell regulation of both Reactive Oxygen Species (ROS) and Reactive Nitrogen Species (RNS) levels and are a target for several posttranslational oxidative modifications that take place inside the atherosclerotic plaque, probably contributing to both atherogenesis and atherosclerotic plaque progression towards complicated lesions. Advanced carotid plaques are characterized by very high intraplaque GSH levels, due to cell lysis during apoptotic and/or necrotic events, probably responsible for the altered equilibrium among protein sulfhydryls and LMW thiols. Some lines of evidence show that the prooxidant environment present in atherosclerotic tissue could modify filtered proteins also by protein-SH group oxidation, and demonstrate that particularly albumin, once filtered, represents a harmful source of homocysteine and cysteinylglycine inside the plaque. The oxidative modification of protein sulfhydryls, with particular emphasis to protein thiolation by LMW thiols and its association with atherosclerosis, is the main topic of this review.
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18
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Abas E, Espallargas N, Burbello G, Mesonero JE, Rodriguez-Dieguez A, Grasa L, Laguna M. Anticancer Activity of Alkynylgold(I) with P(NMe2)3 Phosphane in Mouse Colon Tumors and Human Colon Carcinoma Caco-2 Cell Line. Inorg Chem 2019; 58:15536-15551. [DOI: 10.1021/acs.inorgchem.9b02528] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Elisa Abas
- Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza−CSIC, Plaza S. Francisco s/n, 50009 Zaragoza, Spain
| | - Natalia Espallargas
- Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza−CSIC, Plaza S. Francisco s/n, 50009 Zaragoza, Spain
| | - Gianluca Burbello
- Departamento Farmacología y Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Jose E. Mesonero
- Departamento Farmacología y Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, Miguel Servet, 177, 50013 Zaragoza, Spain
- Instituto de Investigación Sanitaria de Aragón (IIS Aragón), 50009 Zaragoza, Spain
- Instituto Agroalimentario de Aragón -IA2- (Universidad de Zaragoza-CITA), 50013 Zaragoza, Spain
| | - Antonio Rodriguez-Dieguez
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Granada, Severo Ochoa s/n, 18071 Granada, Spain
| | - Laura Grasa
- Departamento Farmacología y Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, Miguel Servet, 177, 50013 Zaragoza, Spain
- Instituto de Investigación Sanitaria de Aragón (IIS Aragón), 50009 Zaragoza, Spain
- Instituto Agroalimentario de Aragón -IA2- (Universidad de Zaragoza-CITA), 50013 Zaragoza, Spain
| | - Mariano Laguna
- Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza−CSIC, Plaza S. Francisco s/n, 50009 Zaragoza, Spain
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19
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Bteich M, Poulin P, Haddad S. The potential protein-mediated hepatic uptake: discussion on the molecular interactions between albumin and the hepatocyte cell surface and their implications for the in vitro-to-in vivo extrapolations of hepatic clearance of drugs. Expert Opin Drug Metab Toxicol 2019; 15:633-658. [DOI: 10.1080/17425255.2019.1640679] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Michel Bteich
- Department of Environmental and Occupational Health, School of Public Health, Université de Montréal, Montreal, Quebec, Canada
| | - Patrick Poulin
- Department of Environmental and Occupational Health, School of Public Health, Université de Montréal, Montreal, Quebec, Canada
- Consultant Patrick Poulin Inc., Québec city, Canada
| | - Sami Haddad
- Department of Environmental and Occupational Health, School of Public Health, Université de Montréal, Montreal, Quebec, Canada
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20
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Hsu YC, Hung MJ, Chen YA, Wang TF, Ou YR, Chen SH. Identifying Reducing and Capping Sites of Protein-Encapsulated Gold Nanoclusters. Molecules 2019; 24:E1630. [PMID: 31027193 PMCID: PMC6514900 DOI: 10.3390/molecules24081630] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/19/2019] [Accepted: 04/22/2019] [Indexed: 11/28/2022] Open
Abstract
The reducing and capping sites along with their local structure impact photo properties of the red bovine serum albumin-capped Au nanocluster (BSA-AuNC), however, they are hard to identify. We developped a workflow and relevant techniques using mass spectrometry (MS) to identify the reducing and capping sites of BSA-AuNCs involved in their formation and fluorescence. Digestion without disulfide cleavages yielded an Au core fraction exhibiting red fluorescence and [AunSm] ion signals and a non-core fraction exhibiting neither of them. The core fraction was identified to mainly be comprised of peptides containing cysteine residues. The fluorescence and [AunSm] signals were quenched by tris(2-carboxyethyl)phosphine, confirming that disulfide groups were required for nanocluster stabilization and fluorescence. By MS sequencing, the disulfide pairs, C75-C91/C90-C101 in domain IA, C315-C360/C359-C368 in domain IIB, and C513-C558/C557-C566 in domain IIIB, were identified to be main capping sites of red AuNCs. Peptides containing oxidized cysteines (sulfinic or cysteic acid) were identified as reducing sites mainly in the non-core fraction, suggesting that disulfide cleavages by oxidization and conformational changes contributed to the subsequent growth of nanoclusters at nearby intact disulfide pairs. This is the first report on precise identification of the reducing and capping sites of BSA-AuNCs.
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Affiliation(s)
- Yu-Chen Hsu
- Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Mei-Jou Hung
- Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Yi-An Chen
- Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Tsu-Fan Wang
- Department of Applied Chemistry, National Chia-Yi University, Chia-Yi 60004, Taiwan.
| | - Ying-Ru Ou
- Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Shu-Hui Chen
- Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan.
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21
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Bhunia S, Kumar S, Purkayastha P. Application of Photoinduced Electron Transfer with Copper Nanoclusters toward Finding Characteristics of Protein Pockets. ACS OMEGA 2019; 4:2523-2532. [PMID: 31459491 PMCID: PMC6648241 DOI: 10.1021/acsomega.8b03213] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 01/18/2019] [Indexed: 05/30/2023]
Abstract
Proteins possess various domains and subdomain pockets with varying hydrophobicity/hydrophilicity. The local polarities of these domains play a major role in oxidation-reduction-based biological processes. Herein, we have synthesized ultrasmall fluorescent copper nanoclusters (Cu NCs) that are directed to bind to the different domain-specific pockets of the model protein bovine serum albumins (BSA). Potential electron acceptors, methyl viologen (MV) derivatives, were chosen such that they specifically reach the various domains following their hydrophobicity/hydrophilicity. Here, we have used MV2+, HMV+, and DHMV2+, possessing hydrophilic, intermediate, and hydrophobic specificities. Being electron acceptors, these derivatives draw electrons from the Cu NCs through photoinduced electron transfer (PET). The rate of PET varies at the different domains of BSA based on the local environment which has been analyzed. Here, PET is confirmed by steady state as well as time-resolved fluorescence spectroscopy. This study would provide a measurable way to identify the location of the different domains of a protein which is scalable by changing the superficial conditions without unfolding the protein.
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Affiliation(s)
- Soumyadip Bhunia
- Department
of Chemical Sciences and Center for Advanced Functional
Materials (CAFM), Indian Institute of Chemical
Sciences (IISER) Kolkata, Mohanpur 741246, West Bengal, India
| | - Sumit Kumar
- Department
of Chemical Sciences and Center for Advanced Functional
Materials (CAFM), Indian Institute of Chemical
Sciences (IISER) Kolkata, Mohanpur 741246, West Bengal, India
| | - Pradipta Purkayastha
- Department
of Chemical Sciences and Center for Advanced Functional
Materials (CAFM), Indian Institute of Chemical
Sciences (IISER) Kolkata, Mohanpur 741246, West Bengal, India
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22
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Homologous series of amphiphiles bearing imidazolium head group: Complexation with bovine serum albumin. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.082] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Matos CP, Yildizhan Y, Adiguzel Z, Pavan FR, Campos DL, Pessoa JC, Ferreira LP, Tomaz AI, Correia I, Acilan C. New ternary iron(iii) aminobisphenolate hydroxyquinoline complexes as potential therapeutic agents. Dalton Trans 2019; 48:8702-8716. [DOI: 10.1039/c9dt01193e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Fe(iii)-Aminobisphenolate hydroxyquinoline complexes are active anticancer drug candidates in the low micromolar range, displaying apoptosis as the mode of cell death.
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Affiliation(s)
- Cristina P. Matos
- Centro de Química Estrutural
- Departamento de Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
| | - Yasemin Yildizhan
- TUBITAK
- Marmara Research Center
- Genetic Engineering and Biotechnology Institute
- Gebze/Kocaeli
- Turkey
| | - Zelal Adiguzel
- TUBITAK
- Marmara Research Center
- Genetic Engineering and Biotechnology Institute
- Gebze/Kocaeli
- Turkey
| | | | | | - João Costa Pessoa
- Centro de Química Estrutural
- Departamento de Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
| | | | - Ana Isabel Tomaz
- Centro de Química Estrutural
- Faculdade de Ciências
- Universidade de Lisboa
- 1749-016 Lisbon
- Portugal
| | - Isabel Correia
- Centro de Química Estrutural
- Departamento de Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
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24
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Wang B, Sun Y, Davis TP, Ke PC, Wu Y, Ding F. Understanding Effects of PAMAM Dendrimer Size and Surface Chemistry on Serum Protein Binding with Discrete Molecular Dynamics Simulations. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2018; 6:11704-11715. [PMID: 30881771 PMCID: PMC6413314 DOI: 10.1021/acssuschemeng.8b01959] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Polyamidoamine (PAMAM) dendrimers, a class of polymeric nanoparticles (NPs) with highly-controllable sizes and surface chemistry, are promising candidates for many biomedical applications, including drug and gene delivery, imaging, and inhibition of amyloid aggregation. In circulation, binding of serum proteins with dendritic NPs renders the formation of protein corona and alters the biological identity of the NP core, which may subsequently elicit immunoresponse and cytotoxicity. Understanding the effects of PAMAM size and surface chemistry on serum protein binding is, therefore, crucial to enable their broad biomedical applications. Here, by applying atomistic discrete molecular dynamics (DMD) simulations, we first uncovered the binding of PAMAM with HSA and Ig and detailed the dependences of such binding on PAMAM size and surface modification. Compared to either anionic or cationic surfaces, modifications with neutral phosphorylcholine (PC), polyethylene glycol (PEG), and hydroxyls (OH) significantly reduced binding with proteins. The relatively strong binding between proteins and PAMAM dendrimers with charged surface groups was mainly driven by electrostatic interactions as well as hydrophobic interactions. Using steered DMD (SDMD) simulations, we conducted a force-pulling experiment in silico estimating the critical forces separating PAMAM-protein complexes and deriving the corresponding free energy barriers for dissociation. The SDMD-derived HSA-binding affinities were consistent with existing experimental measurements. Our results highlighted the association dynamics of protein-dendrimer interactions and binding affinities, whose implications range from fundamental nanobio interfacial phenomena to the development of "stealth NPs".
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Affiliation(s)
- Bo Wang
- department of Physics and Astronomy, Clemson University,
Clemson, SC 29634, USA
- Department of Systems and Computational Biology, Albert
Einstein College of Medicine, Bronx, NY 10461, USA
| | - Yunxiang Sun
- department of Physics and Astronomy, Clemson University,
Clemson, SC 29634, USA
| | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and
Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381
Royal Parade, Parkville, VIC 3052, Australia
| | - Pu Chun Ke
- ARC Centre of Excellence in Convergent Bio-Nano Science and
Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381
Royal Parade, Parkville, VIC 3052, Australia
| | - Yinghao Wu
- Department of Systems and Computational Biology, Albert
Einstein College of Medicine, Bronx, NY 10461, USA
| | - Feng Ding
- department of Physics and Astronomy, Clemson University,
Clemson, SC 29634, USA
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25
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Ren L, Yu D, Wang Y, Shen L, Zhang J, Wang Y, Fang X. Inhibiting effects of common trivalent metal ions on transmembrane-type 2 matrix metalloproteinase. Int J Biol Macromol 2018; 119:683-691. [PMID: 30048727 DOI: 10.1016/j.ijbiomac.2018.07.145] [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: 06/12/2018] [Revised: 07/14/2018] [Accepted: 07/23/2018] [Indexed: 11/29/2022]
Abstract
Transmembrane-type 2 matrix metalloproteinase (MT2-MMP) degrades connective extracellular matrix between cells and enables tumor cells to migrate and metastasize, making this substance a potential therapeutic target in various diseases. In this work, the interactions between MT2-MMP and common trivalent metal ions, including aluminum (Al3+) and ferrum (Fe3+) ions, were investigated. Enzymatic detection revealed that Al3+ and Fe3+ strongly inhibited the MT2-MMP. Fluorescence spectrography elucidated a static quenching interaction between the negatively charged amino acids on MT2-MMP and the inhibitory trivalent metal ions, indicating that a stable complex was formed between MT2-MMP and metal ions. In addition, fluorescence data and molecular modeling analysis of the binding characteristics revealed that one trivalent metal ion bound with a protein in the stable complex formation process. The potential inhibitory effect of Al3+ on MT2-MMP was further examined in an MT2-MMP-overexpressed cell line, HT1080, by using flow cytometry. As a result, Al3+ can promote HT1080 cell apoptosis in a micromolar concentration-dependent manner. This work illustrated that common trivalent metal ions can potentially inhibit MT2-MMP-related tumors.
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Affiliation(s)
- Li Ren
- College of Food Science and Engineering, Jilin University, 5333 Xi'an Street, Changchun, Jilin 130062, PR China; State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Dahai Yu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Yanyan Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Liqiao Shen
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Jinrui Zhang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Ye Wang
- School of Life Science, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, PR China.
| | - Xuexun Fang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China.
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26
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Patel R, Maurya N, Parray MUD, Farooq N, Siddique A, Verma KL, Dohare N. Esterase activity and conformational changes of bovine serum albumin toward interaction with mephedrone: Spectroscopic and computational studies. J Mol Recognit 2018; 31:e2734. [DOI: 10.1002/jmr.2734] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 03/26/2018] [Accepted: 05/08/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences; Jamia Millia Islamia (A Central University); New Delhi India
| | - Neha Maurya
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences; Jamia Millia Islamia (A Central University); New Delhi India
| | - Mehraj ud din Parray
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences; Jamia Millia Islamia (A Central University); New Delhi India
| | - Nida Farooq
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences; Jamia Millia Islamia (A Central University); New Delhi India
| | - Abrar Siddique
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences; Jamia Millia Islamia (A Central University); New Delhi India
| | - Kanak Lata Verma
- Department of Chemistry, Regional Forensic Science Laboratory; Government of NCT of Delhi; New Delhi India
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences; Jamia Millia Islamia (A Central University); New Delhi India
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27
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Samanta S, Halder S, Das G. Twisted-Intramolecular-Charge-Transfer-Based Turn-On Fluorogenic Nanoprobe for Real-Time Detection of Serum Albumin in Physiological Conditions. Anal Chem 2018; 90:7561-7568. [PMID: 29792032 DOI: 10.1021/acs.analchem.8b01181] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Two cyanine-based fluorescent probes, ( E)-2-(4-(diethylamino)-2-hydroxystyryl)-3-ethyl-1,1-dimethyl-1 H-benzo[ e]indol-3-ium iodide (L) and ( E)-3-ethyl-1,1-dimethyl-2-(4-nitrostyryl)-1 H-benzo[ e]indol-3-ium iodide (L1), have been designed and synthesized. Of these two probes, the twisted-intramolecular-charge-transfer (TICT)-based probe, L, can preferentially self-assemble to form nanoaggregates. L displayed a selective turn-on fluorescence response toward human and bovine serum albumin (HSA and BSA) in ∼100% aqueous PBS medium, which is noticeable with the naked eye, whereas L1 failed to sense these albumin proteins. The selective turn-on fluorescence response of L toward HSA and BSA can be attributed to the selective binding of probe L with HSA and BSA without its interfering with known drug-binding sites. The specific binding of L with HSA led to the disassembly of the self-assembled nanoaggregates of L, which was corroborated by dynamic-light-scattering (DLS) and transmission-electron-microscopy (TEM) analysis. Probe L has a limit of detection as low as ∼6.5 nM. The sensing aptitude of probe L to detect HSA in body fluid and an artificial-urine sample has been demonstrated.
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Affiliation(s)
- Soham Samanta
- Department of Chemistry , Indian Institute of Technology Guwahati 781039 , India
| | - Senjuti Halder
- Department of Chemistry , Indian Institute of Technology Guwahati 781039 , India
| | - Gopal Das
- Department of Chemistry , Indian Institute of Technology Guwahati 781039 , India
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28
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Boscutti G, Nardon C, Marchiò L, Crisma M, Biondi B, Dalzoppo D, Dalla Via L, Formaggio F, Casini A, Fregona D. Anticancer Gold(III) Peptidomimetics: From Synthesis to in vitro and ex vivo Biological Evaluations. ChemMedChem 2018; 13:1131-1145. [PMID: 29570944 DOI: 10.1002/cmdc.201800098] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/14/2018] [Indexed: 12/25/2022]
Abstract
Five new AuIII -peptidodithiocarbamato complexes of the type [AuIII Br2 (dtc-AA1 -AA2 -OR] (in which AA1 =N-methylglycine (Sar), l/d-Pro; AA2 =l/d-Ala, α-aminoisobutyric acid (Aib); R=OtBu, triethylene glycol methyl ether), differing with regard to the amino acid sequence and/or the chiral amino acid configuration, were designed to enhance tumor selectivity and bioavailability. The gold(III)-based moiety was functionalized to exploit the targeting properties of the peptidomimetic ligand toward two peptide transporters (namely PEPT1 and PEPT2), which are upregulated in several tumor cells. The compounds were synthesized and fully characterized, mainly by means of elemental analysis, one- and two-dimensional NMR spectroscopy, FT-IR, and UV/Vis spectrophotometry. The crystal structures of three compounds were also solved by X-ray diffraction. In vitro cytotoxicity studies using a panel of human tumor cell lines (A549 [non-small-cell lung carcinoma], MCF-7 [breast cancer], A2780 [ovarian carcinoma], H1975 [non-small-cell lung carcinoma], H460 [large-cell lung carcinoma], and A431 [human epidermoid carcinoma]) showed the dtc-Pro-Aib-OtBu derivative to be very effective, with GI50 values much lower than those of cisplatin. This complex was thus selected for evaluating stability under physiological conditions and possible interactions with serum albumin, as well in PARP-1 enzyme inhibition assays and preliminary ex vivo toxicity experiments on healthy rat tissues.
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Affiliation(s)
- Giulia Boscutti
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Chiara Nardon
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Luciano Marchiò
- SCVSA Department, University of Parma, Parco Area delle Scienze 17/A, 43121, Parma, Italy
| | - Marco Crisma
- Institute of Biomolecular Chemistry, Padova Unit, CNR, via Marzolo 1, 35131, Padova, Italy
| | - Barbara Biondi
- Institute of Biomolecular Chemistry, Padova Unit, CNR, via Marzolo 1, 35131, Padova, Italy
| | - Daniele Dalzoppo
- Department of Pharmaceutical Sciences, University of Padova, via Marzolo 5, 35131, Padova, Italy
| | - Lisa Dalla Via
- Department of Pharmaceutical Sciences, University of Padova, via Marzolo 5, 35131, Padova, Italy
| | - Fernando Formaggio
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy.,Institute of Biomolecular Chemistry, Padova Unit, CNR, via Marzolo 1, 35131, Padova, Italy
| | - Angela Casini
- School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT, Cardiff, UK.,Groningen Research Institute of Pharmacy, University of Groningen, A. Deusinglaan 1, 9713 GV, Groningen, The Netherlands
| | - Dolores Fregona
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
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Gou Y, Miao D, Zhou M, Wang L, Zhou H, Su G. Bio-Inspired Protein-Based Nanoformulations for Cancer Theranostics. Front Pharmacol 2018; 9:421. [PMID: 29755355 PMCID: PMC5934525 DOI: 10.3389/fphar.2018.00421] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/11/2018] [Indexed: 01/09/2023] Open
Abstract
Over the past decade, more interests have been aroused in engineering protein-based nanoformulations for cancer treatment. This excitement originates from the success of FDA approved Abraxane (Albumin-based paclitaxel nanoparticles) in 2005. The new generation of biocompatible endogenous protein-based nanoformulations is currently constructed through delivering cancer therapeutic and diagnostic agents simultaneously, as named potential theranostics. Protein nanoformulations are commonly incorporated with dyes, contrast agents, drug payloads or inorganic nanoclusters, serving as imaging-guided combinatorial cancer therapeutics. Employing the nature identity of proteins, the theranostics, escape the clearance by reticuloendothelial cells and have a long blood circulation time. The nanoscale sizet allows them to be penetrated deeply into tumor tissues. In addition, stimuli release and targeted molecules are incorporated to improve the delivery efficiency. The ongoing advancement of protein-based nanoformulations for cancer theranostics in recent 5 years is reviewed in this paper. Fine-designed nanoformulations based on albumin, ferritin, gelatin, and transferrin are highlighted from the literature. Finally, the current challenges are identified in translating protein-based nanoformulations from laboratory to clinical trials.
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Affiliation(s)
- Yi Gou
- Jiangsu Province Key Laboratory of Inflammation and Molecular Drug Targets, School of Pharmacy, Nantong University, Nantong, China
| | - Dandan Miao
- Jiangsu Province Key Laboratory of Inflammation and Molecular Drug Targets, School of Pharmacy, Nantong University, Nantong, China
| | - Min Zhou
- Jiangsu Province Key Laboratory of Inflammation and Molecular Drug Targets, School of Pharmacy, Nantong University, Nantong, China
| | - Lijuan Wang
- Guangzhou Key Laboratory of Environmental Exposure and Health and Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
| | - Hongyu Zhou
- Guangzhou Key Laboratory of Environmental Exposure and Health and Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
| | - Gaoxing Su
- Jiangsu Province Key Laboratory of Inflammation and Molecular Drug Targets, School of Pharmacy, Nantong University, Nantong, China
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30
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Bueno PVA, Hilamatu KCP, Carmona-Ribeiro AM, Petri DFS. Magnetically triggered release of amoxicillin from xanthan/Fe 3O 4/albumin patches. Int J Biol Macromol 2018; 115:792-800. [PMID: 29702165 DOI: 10.1016/j.ijbiomac.2018.04.119] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 04/02/2018] [Accepted: 04/23/2018] [Indexed: 02/08/2023]
Abstract
This work was motivated by the need of stimuli responsive drug carriers, which can be activated by low cost non-invasive stimuli such as external magnetic field (EMF). Thus, novel antimicrobial materials based on xanthan gum (XG), magnetic nanoparticles (MNP), bovine serum albumin (BSA) and amoxicillin (Amox) were designed in order to promote the release of Amox under magnetic stimuli. Firstly, surfaces with different functionalities were prepared by sequential deposition of thin layers on Si wafers and characterized by means of ellipsometry and atomic force microscopy. Amox adsorbed preferentially onto XG or BSA films. In solution, favorable interactions between Amox and BSA were evidenced by substantial changes in the BSA secondary structure, as revealed by circular dichroism. Patches of XG and XG/MNP/BSA were immersed in 2 g L-1 Amox, yielding 10 ± 3 and 17 ± 4 μg/cm3 Amox loading, respectively. The inclusion of 0.2 wt% Fe3O4 in the patches and their exposure to EMF enabled in vitro release of Amox, at pH 5.5 and 0.02 mol L-1 NaCl, following the quasi-Fickian behavior. Amox diffused from XG/MNP/BSA patches in agar medium containing Staphylococcus aureus and Escherichia coli, inhibiting their growth. The inhibition of E. coli growth was particularly efficient under EMF.
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Affiliation(s)
- Pedro V A Bueno
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, 05508-000 São Paulo, Brazil
| | - Karina C P Hilamatu
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, 05508-000 São Paulo, Brazil
| | | | - Denise F S Petri
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, 05508-000 São Paulo, Brazil.
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31
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Alsalme A, Khan RA, Alkathiri AM, Ali MS, Tabassum S, Jaafar M, Al-Lohedan HA. β-Carboline Silver Compound Binding Studies with Human Serum Albumin: A Comprehensive Multispectroscopic Analysis and Molecular Modeling Study. Bioinorg Chem Appl 2018; 2018:9782419. [PMID: 29770145 PMCID: PMC5889910 DOI: 10.1155/2018/9782419] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 01/03/2018] [Accepted: 01/31/2018] [Indexed: 12/04/2022] Open
Abstract
β-Carbolines (βCs) belong to the naturally occurring alkaloid family, derived from 9H-pyrido[3,4-b]indole, also known as norharmane (Hnor). Knowing the importance of the βCs alkaloid family in biological processes, a comprehensive binding study is reported of four Ag(I) compounds containing the ligand Hnor and having different counteranions, namely, NO3-, ClO4-, BF4-, and PF6-, with human serum albumin (HSA) as a model protein. Different approaches like UV-visible, fluorescence spectroscopy, circular dichroism (CD), and molecular docking studies have been used for this purpose. The fluorescence results establish that the phenomenon of binding of Ag(Hnor) complexes to HSA can be deduced from the static quenching mechanism. The results showed a significant binding propensity of the used Ag(I) compounds towards HSA. The role of the counteranion on the binding of Ag(I) compounds to HSA appeared to be remarkable. Compounds with (ClO4-) and (NO3-) were found to have the most efficient binding towards HSA as compared to BF4-and PF6-. Circular dichroism (CD) studies made clear that conformational changes in the secondary structure of HSA were induced by the presence of Ag(I) compounds. Also, the α-helical structure of HSA was found to get transformed into a β-sheeted structure. Interestingly, (ClO4-) and (NO3-) compounds were found to induce most substantial changes in the secondary structure of HSA. The outcome of this study may contribute to understanding the propensity of proteins involved in neurological diseases (such as Alzheimer's and Parkinson's diseases) to undergo a similar transition in the presence of Ag-β-carboline compounds.
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Affiliation(s)
- Ali Alsalme
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Rais Ahmad Khan
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Arwa M. Alkathiri
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohd. Sajid Ali
- Surfactant Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Sartaj Tabassum
- Surfactant Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammed Jaafar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Hamad A. Al-Lohedan
- Surfactant Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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32
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The role of zinc and its compounds in leukemia. J Biol Inorg Chem 2018; 23:347-362. [DOI: 10.1007/s00775-018-1545-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 02/09/2018] [Indexed: 12/23/2022]
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Srivastava R, Alam MS. Effect of pH and surfactant on the protein: A perspective from theory and experiments. Int J Biol Macromol 2018; 107:1519-1527. [DOI: 10.1016/j.ijbiomac.2017.10.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/04/2017] [Accepted: 10/04/2017] [Indexed: 11/16/2022]
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34
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Marques CMS, Nunes EA, Lago L, Pedron CN, Manieri TM, Sato RH, Oliveira VX, Cerchiaro G. Generation of Advanced Glycation End-Products (AGEs) by glycoxidation mediated by copper and ROS in a human serum albumin (HSA) model peptide: reaction mechanism and damage in motor neuron cells. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2017; 824:42-51. [PMID: 29150049 DOI: 10.1016/j.mrgentox.2017.10.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 10/17/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
Glucose, in the presence of reactive oxygen species (ROS), acts as an as an oxidative agent and drives deleterious processes in Diabetes Mellitus. We have studied the mechanism and the toxicological effects of glucose-dependent glycoxidation reactions driven by copper and ROS, using a model peptide based on the exposed sequence of Human Serum Albumin (HSA) and containing a lysine residue susceptible to copper complexation. The main products of these reactions are Advanced Glycation End-products (AGEs). Carboxymethyl lysine and pyrraline condensed on the model peptide, generating a Modified Peptide (MP). These products were isolated, purified, and tested on cultured motor neuron cells. We observed DNA damage, enhancement of membrane roughness, and formation of domes. We evaluated nuclear abnormalities by the cytokinesis-blocked micronucleus assay and we measured cytostatic and cytotoxic effects, chromosomal breakage, nuclear abnormalities, and cell death. AGEs formed by glycoxidation caused large micronucleus aberrations, apoptosis, and large-scale nuclear abnormalities, even at low concentrations.
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Affiliation(s)
| | - Emilene Arusievicz Nunes
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Larissa Lago
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Cibele Nicolaski Pedron
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Tânia Maria Manieri
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Roseli Hiromi Sato
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Vani Xavier Oliveira
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Giselle Cerchiaro
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil.
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Rational design of polysorbate 80 stabilized human serum albumin nanoparticles tailored for high drug loading and entrapment of irinotecan. Int J Pharm 2017; 536:82-94. [PMID: 29146538 DOI: 10.1016/j.ijpharm.2017.11.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/09/2017] [Accepted: 11/10/2017] [Indexed: 01/01/2023]
Abstract
Human serum albumin (HSA) nanoparticles are considered to be versatile carrier of anticancer agents in efficiently delivering the drug to the tumor site without causing any toxicity. The aim of the study was to develop stable HSA nanoparticles (NPs) of drug irinotecan (Iro) having slightly water solubility and moderate HSA binding. A novel strategy of employing a hydrophilic non-ionic surfactant polysorbate 80 which forms protein-polysorbate 80 complex with increased affinity and improvement in Iro-HSA binding has been used to maximize the loading and entrapment efficiency of Iro in HSA-NPs. Bespoke nanoparticles with entrapment efficiency (79.09%) and drug loading of 9.62% could be achieved with spherical shape and particle size of 77.38 nm, 0.290 polydispersity index and -23.7 mv Zeta potential. The drug entrapment in nanoparticles was confirmed by Differential Scanning Calorimeter, Fourier Transformation Infrared Spectroscopy and Fluorescence Spectroscopy. In vitro release of Iro from NPs showed biphasic-release with initial burst followed by prolonged release upto 24 h. The short-term stability investigation of nanodispersion showed no significant changes in physicochemical properties of NPs. Long-term studies on freeze dried Iro-HSA-NPs indicated good stability of NPs up to 12 months. This is the first report for efficient fabrication of Iro delivery system based on HSA nanoparticles.
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36
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Nerusu A, Reddy PS, Ramachary DB, Subramanyam R. Unraveling the Stability of Plasma Proteins upon Interaction of Synthesized Androstenedione and Its Derivatives-A Biophysical and Computational Approach. ACS OMEGA 2017; 2:6514-6524. [PMID: 30023521 PMCID: PMC6045264 DOI: 10.1021/acsomega.7b00577] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 09/20/2017] [Indexed: 06/08/2023]
Abstract
4-Androstene-3-17-dione (4A), also known as androstenedione, is the key intermediate of steroid metabolism. 5β-Androstane-3-17-dione (5A) and (+)-6-methyl-5β-androstane-3-17-dione (6M) are the steroid derivatives of androstenedione. The interactions of androstenedione and its derivatives with plasma proteins are important in understanding the distribution and bioavailability of these molecules. In our present study, we have studied the binding affinity of androstenedione and its derivatives with plasma proteins such as human serum albumin (HSA) and α1-acid glycoprotein (AGP). Our results showed that the 4A, 5A, and 6M steroid molecules can form stable complexes with HSA and AGP. The affinity of the studied steroid molecules with HSA is high compared to that with AGP, and the binding constants obtained for 4A, 5A, and 6M with HSA are 5.3 ± 2 × 104, 5.3 ± 1 × 104, and 9.5 ± 0.2 × 104 M-1, respectively. Further, binding sites of these steroid molecules in HSA are identified using molecular displacement and docking studies: it is found that 4A and 5A bind to domain III while 6M binds to domain II of HSA. Furthermore, the circular dichroism data revealed that there is a partial unfolding of the protein while interacting with androstenedione and its derivatives. Also, molecular dynamics simulations were carried out for HSA-androstenedione and its derivative complexes to understand their stability; hence, these results yielded that HSA-androstenedione and its derivative complexes were stabilized after 15 ns and maintained their stable structures.
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Affiliation(s)
- Aparna Nerusu
- Department
of Plant Science, School of Life Sciences,
University of Hyderabad, Gachibowli, Hyderabad, Telangana 500046, India
| | - P. Srinivasa Reddy
- Catalysis
Laboratory, School of Chemistry, University
of Hyderabad, Gachibowli, Hyderabad, Telangana 500046, India
| | - Dhevalapally B. Ramachary
- Catalysis
Laboratory, School of Chemistry, University
of Hyderabad, Gachibowli, Hyderabad, Telangana 500046, India
| | - Rajagopal Subramanyam
- Department
of Plant Science, School of Life Sciences,
University of Hyderabad, Gachibowli, Hyderabad, Telangana 500046, India
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37
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Patel BK, Dasmandal S, Mahapatra A. Unraveling the binding of phenolphthalein with serum protein and releasing by β-cyclodextrin. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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38
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Zucca FA, Segura-Aguilar J, Ferrari E, Muñoz P, Paris I, Sulzer D, Sarna T, Casella L, Zecca L. Interactions of iron, dopamine and neuromelanin pathways in brain aging and Parkinson's disease. Prog Neurobiol 2017; 155:96-119. [PMID: 26455458 PMCID: PMC4826627 DOI: 10.1016/j.pneurobio.2015.09.012] [Citation(s) in RCA: 423] [Impact Index Per Article: 60.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 09/14/2015] [Accepted: 09/17/2015] [Indexed: 12/11/2022]
Abstract
There are several interrelated mechanisms involving iron, dopamine, and neuromelanin in neurons. Neuromelanin accumulates during aging and is the catecholamine-derived pigment of the dopamine neurons of the substantia nigra and norepinephrine neurons of the locus coeruleus, the two neuronal populations most targeted in Parkinson's disease. Many cellular redox reactions rely on iron, however an altered distribution of reactive iron is cytotoxic. In fact, increased levels of iron in the brain of Parkinson's disease patients are present. Dopamine accumulation can induce neuronal death; however, excess dopamine can be removed by converting it into a stable compound like neuromelanin, and this process rescues the cell. Interestingly, the main iron compound in dopamine and norepinephrine neurons is the neuromelanin-iron complex, since neuromelanin is an effective metal chelator. Neuromelanin serves to trap iron and provide neuronal protection from oxidative stress. This equilibrium between iron, dopamine, and neuromelanin is crucial for cell homeostasis and in some cellular circumstances can be disrupted. Indeed, when neuromelanin-containing organelles accumulate high load of toxins and iron during aging a neurodegenerative process can be triggered. In addition, neuromelanin released by degenerating neurons activates microglia and the latter cause neurons death with further release of neuromelanin, then starting a self-propelling mechanism of neuroinflammation and neurodegeneration. Considering the above issues, age-related accumulation of neuromelanin in dopamine neurons shows an interesting link between aging and neurodegeneration.
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Affiliation(s)
- Fabio A Zucca
- Institute of Biomedical Technologies, National Research Council of Italy, Segrate, Milan, Italy
| | - Juan Segura-Aguilar
- Faculty of Medicine, Molecular and Clinical Pharmacology, ICBM, University of Chile, Santiago, Chile
| | - Emanuele Ferrari
- Institute of Biomedical Technologies, National Research Council of Italy, Segrate, Milan, Italy
| | - Patricia Muñoz
- Faculty of Medicine, Molecular and Clinical Pharmacology, ICBM, University of Chile, Santiago, Chile
| | - Irmgard Paris
- Faculty of Medicine, Molecular and Clinical Pharmacology, ICBM, University of Chile, Santiago, Chile; Department of Basic Sciences, Faculty of Sciences, Santo Tomás University, Viña del Mar, Chile
| | - David Sulzer
- Department of Psychiatry, Columbia University Medical Center, New York, NY, USA; Department of Neurology, Columbia University Medical Center, New York, NY, USA; Department of Pharmacology, Columbia University Medical Center, New York, NY, USA
| | - Tadeusz Sarna
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Luigi Casella
- Department of Chemistry, University of Pavia, Pavia, Italy
| | - Luigi Zecca
- Institute of Biomedical Technologies, National Research Council of Italy, Segrate, Milan, Italy.
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Duan HY, Li JL, Wu LY, Shu HM, Chen YX, Ding GH, Dong RC, Si HZ, Zhong X, He WY. The evaluation of acute toxicity, antimicrobial activity of 1-phenyl-5-p-tolyl-1H-1, 2, 3-triazole, and binding to human serum albumin. J Biochem Mol Toxicol 2017; 31. [PMID: 28714536 DOI: 10.1002/jbt.21959] [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: 04/21/2017] [Revised: 06/02/2017] [Accepted: 06/21/2017] [Indexed: 11/08/2022]
Abstract
1-Phenyl-5-p-tolyl-1H-1, 2, 3-triazole (PPTA) was a synthesized compound. The result of acute toxicities to mice of PPTA by intragastric administration indicated that PPTA did not produce any significant acute toxic effect on Kunming strain mice. It exhibited the various potent inhibitory activities against two kinds of bananas pathogenic bacteria, black sigatoka and freckle, when compared with that of control drugs and the inhibitory rates were up to 64.14% and 43.46%, respectively, with the same concentration of 7.06 mM. The interaction of PPTA with human serum albumin (HSA) was studied using fluorescence polarization, absorption spectra, 3D fluorescence, and synchronous spectra in combination with quantum chemistry and molecular modeling. Multiple modes of interaction between PPTA and HSA were suggested to stabilize the PPTA-HSA complex, based on thermodynamic data and molecular modeling. Binding of PPTA to HSA induced perturbation in the microenvironment around HSA as well as secondary structural changes in the protein.
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Affiliation(s)
- Hong-Ye Duan
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, People's Republic of China
| | - Jian-Ling Li
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, People's Republic of China
| | - Lu-Yong Wu
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, People's Republic of China
| | - Huo-Ming Shu
- Hainan College of Economics and Business, Haikou, 571127, People's Republic of China
| | - Yu-Xue Chen
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, People's Republic of China
| | - Guo-Hua Ding
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, People's Republic of China
| | - Run-Cong Dong
- Research Center for Drug Safety Evaluation of Hainan Province, Haikou, 571158, People's Republic of China
| | - Hong-Zong Si
- Institute for Computational Science and Engineering, Qingdao University, Qingdao, 266071, People's Republic of China
| | - Xia Zhong
- School of Pharmaceutical Science, Hainan Medical University, Haikou, 571199, People's Republic of China
| | - Wen-Ying He
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, People's Republic of China
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40
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Sekowski S, Ionov M, Abdulladjanova N, Makhmudov R, Mavlyanov S, Milowska K, Bryszewska M, Zamaraeva M. Interaction of α-synuclein with Rhus typhina tannin - Implication for Parkinson's disease. Colloids Surf B Biointerfaces 2017; 155:159-165. [PMID: 28419945 DOI: 10.1016/j.colsurfb.2017.04.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 03/29/2017] [Accepted: 04/04/2017] [Indexed: 01/17/2023]
Abstract
The etiology of Parkinson's disease (PD) relates to α-synuclein, a small protein with the ability to aggregate and form Lewy bodies. One of its prevention strategies is inhibition of α-synuclein oligomerization. We have investigated the interaction of α-synuclein and human serum albumin with 3,6-bis-О-di-О-galloyl-1,2,4-tri-О-galloyl-β-d-glucose (a tannin isolated from the plant Rhus typhina). Using fluorescence spectroscopy method we found that this tannin interacts strongly with α-synuclein forming complexes. Circular dichroism analysis showed a time-dependent inhibition of α-synuclein aggregation in the presence of the tannin. On the other hand, 3,6-bis-О-di-О-galloyl-1,2,4-tri-О-galloyl-β-d-glucose had a much stronger interaction with human serum albumin than α-synuclein. The calculated binding constant for tannin-protein interaction was considerably higher for albumin than α-synuclein. This tannin interacted with albumin through a "sphere of action" mechanism. The results lead to the conclusion that 3,6-bis-О-di-О-galloyl-1,2,4-tri-О-galloyl-β-d-glucose is a potent preventive compound against Parkinson's disease. However, this tannin interacts very strongly with human serum albumin, significantly reducing the bioavailability of this compound.
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Affiliation(s)
- Szymon Sekowski
- Department of Biophysics, Laboratory of Molecular Biophysics, Faculty of Biology and Chemistry, University of Bialystok, 15-950 Bialystok, Poland.
| | - Maksim Ionov
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland
| | - Nodira Abdulladjanova
- Institute of Bioorganic Chemistry, Academy of Science of Republic of Uzbekistan, 100143, Tashkent, Uzbekistan
| | - Rustam Makhmudov
- Institute of Bioorganic Chemistry, Academy of Science of Republic of Uzbekistan, 100143, Tashkent, Uzbekistan
| | - Saidmukhtar Mavlyanov
- Institute of Bioorganic Chemistry, Academy of Science of Republic of Uzbekistan, 100143, Tashkent, Uzbekistan
| | - Katarzyna Milowska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland
| | - Maria Bryszewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland
| | - Maria Zamaraeva
- Department of Biophysics, Laboratory of Molecular Biophysics, Faculty of Biology and Chemistry, University of Bialystok, 15-950 Bialystok, Poland
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41
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Liao X, Gao Z, Xia Y, Niu F, Zhai W. Rational Design and Synthesis of Carboxylate Gemini Surfactants with an Excellent Aggregate Behavior for Nano-La 2O 3 Morphology-Controllable Preparation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3304-3310. [PMID: 28251849 DOI: 10.1021/acs.langmuir.7b00096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A series of carboxylate gemini surfactants (CGS, Cn-Φ-Cn, n = 12, 14, 16, 18) with diphenyl ketone as a spacer group were prepared using a simple and feasible synthetic method. These CGS exhibited an excellent surface activity with extremely low critical micelle concentration (CMC) value (approximately 10-5 mol/L), good performance in reducing surface tension (nearly 30 mN/m), and the ability of molecular self-assembly into different aggregate morphologies via adjusting the concentrations, which is attributed to the introduction of diphenyl ketone and carboxylic acid ammonium salt in the molecular structure. Moreover, the surface activity and self-assembly ability of CGS were further optimized by tuning the length of the tail chain. These excellent properties imply that CGS can be a soft template to prepare nanomaterials, especially in morphology-controllable synthesis. By adjusting the concentration of one of CGS (C12-Φ-C12), nano-La2O3 particles with diverse morphologies were obtained, including spherical shape, bead-chain shape, rod shape, velvet-antler shape, cedar shape, and bowknot shape. This work offers a vital insight into the rational design of template agents for the development of morphology-controllable nanomaterials.
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Affiliation(s)
- Xueming Liao
- College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, Hubei, PR China
- Key Laboratory of Biomedical Polymers, Ministry of Education , Wuhan 430072, Hubei, PR China
| | - Zhinong Gao
- College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, Hubei, PR China
- Key Laboratory of Biomedical Polymers, Ministry of Education , Wuhan 430072, Hubei, PR China
| | - Yan Xia
- College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, Hubei, PR China
- Key Laboratory of Biomedical Polymers, Ministry of Education , Wuhan 430072, Hubei, PR China
| | - Fei Niu
- College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, Hubei, PR China
- Key Laboratory of Biomedical Polymers, Ministry of Education , Wuhan 430072, Hubei, PR China
| | - Wenzhong Zhai
- College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, Hubei, PR China
- Key Laboratory of Biomedical Polymers, Ministry of Education , Wuhan 430072, Hubei, PR China
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42
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Sengupta B, Das N, Sen P. Elucidation of μs dynamics of domain-III of human serum albumin during the chemical and thermal unfolding: A fluorescence correlation spectroscopic investigation. Biophys Chem 2017; 221:17-25. [DOI: 10.1016/j.bpc.2016.11.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/09/2016] [Accepted: 11/16/2016] [Indexed: 11/17/2022]
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43
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Abstract
Protein interactions with surfactants are dependent on their physiochemical properties.
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Affiliation(s)
- Taruna Sharma
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Meena Kumari
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Upendra Kumar Singh
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Abbul Bashar Khan
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Mahendra S. Borse
- Department of Chemistry
- Uttamrao Patil College Dahivel Taluka-sakri
- Dhule
- India
| | - Rajan Patel
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
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44
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Sharma T, Dohare N, Kumari M, Singh UK, Khan AB, Borse MS, Patel R. Comparative effect of cationic gemini surfactant and its monomeric counterpart on the conformational stability and activity of lysozyme. RSC Adv 2017. [DOI: 10.1039/c7ra00172j%0a 10.1016/j.colsurfa.2011.12.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Protein interactions with surfactants are dependent on their physiochemical properties.
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Affiliation(s)
- Taruna Sharma
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Meena Kumari
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Upendra Kumar Singh
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Abbul Bashar Khan
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Mahendra S. Borse
- Department of Chemistry
- Uttamrao Patil College Dahivel Taluka-sakri
- Dhule
- India
| | - Rajan Patel
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
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45
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Sharma T, Dohare N, Kumari M, Singh UK, Khan AB, Borse MS, Patel R. Comparative effect of cationic gemini surfactant and its monomeric counterpart on the conformational stability and activity of lysozyme. RSC Adv 2017. [DOI: 10.1039/c7ra00172j%0a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Protein interactions with surfactants are dependent on their physiochemical properties.
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Affiliation(s)
- Taruna Sharma
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Meena Kumari
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Upendra Kumar Singh
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Abbul Bashar Khan
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Mahendra S. Borse
- Department of Chemistry
- Uttamrao Patil College Dahivel Taluka-sakri
- Dhule
- India
| | - Rajan Patel
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
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46
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Sharma T, Dohare N, Kumari M, Singh UK, Khan AB, Borse MS, Patel R. Comparative effect of cationic gemini surfactant and its monomeric counterpart on the conformational stability and activity of lysozyme. RSC Adv 2017. [DOI: 10.1039/c7ra00172j] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Protein interactions with surfactants are dependent on their physiochemical properties.
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Affiliation(s)
- Taruna Sharma
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Meena Kumari
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Upendra Kumar Singh
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Abbul Bashar Khan
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Mahendra S. Borse
- Department of Chemistry
- Uttamrao Patil College Dahivel Taluka-sakri
- Dhule
- India
| | - Rajan Patel
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
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47
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Tong J, Hu T, Qin A, Sun JZ, Tang BZ. Deciphering the binding behaviours of BSA using ionic AIE-active fluorescent probes. Faraday Discuss 2017; 196:285-303. [DOI: 10.1039/c6fd00165c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The binding behaviours of a transport protein, bovine serum albumin (BSA), in its native, unfolding and refolding states have been probed by monitoring the emission changes of two exogenous AIE-active fluorescent probes, M2 and M3, which are designed to be anionic and cationic, respectively. Due to their AIE properties, both M2 and M3 display emission enhancement when bound to the hydrophobic cavity of BSA. The binding site of M2 and M3 is found to be subdomain IIA. Then, the BSA + M2 and BSA + M3 systems are utilized to fluorescently signal the conformation changes of BSA caused by various external stimuli, including thermally or chemically induced denaturation. The data confirmed the multi-step unfolding process and the existence of a molten-globule intermediate state. The unfolding process consists of the rearrangement of subdomain IIA, the exposure of a negatively charged binding site in domain I that prefers interacting with cationic species, and the transformation of the molten-globule intermediate into the final random coil. The anionic and cationic modifications of the probes enable us to observe that electrostatic interactions play a role in the folding and unfolding of BSA.
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Affiliation(s)
- Jiaqi Tong
- MoE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Ting Hu
- MoE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Anjun Qin
- Guangdong Innovative Research Team
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
| | - Jing Zhi Sun
- MoE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Ben Zhong Tang
- MoE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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48
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Wang LH, Wang MS, Zeng XA, Gong DM, Huang YB. An in vitro investigation of the inhibitory mechanism of β-galactosidase by cinnamaldehyde alone and in combination with carvacrol and thymol. Biochim Biophys Acta Gen Subj 2017; 1861:3189-3198. [DOI: 10.1016/j.bbagen.2016.08.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/11/2016] [Accepted: 08/10/2016] [Indexed: 10/21/2022]
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49
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Sharma T, Dohare N, Kumari M, Singh UK, Khan AB, Borse MS, Patel R. Comparative effect of cationic gemini surfactant and its monomeric counterpart on the conformational stability and activity of lysozyme. RSC Adv 2017. [DOI: 10.1039/c7ra00172j 10.1016/j.colsurfa.2011.12.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Protein interactions with surfactants are dependent on their physiochemical properties.
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Affiliation(s)
- Taruna Sharma
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Meena Kumari
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Upendra Kumar Singh
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Abbul Bashar Khan
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
| | - Mahendra S. Borse
- Department of Chemistry
- Uttamrao Patil College Dahivel Taluka-sakri
- Dhule
- India
| | - Rajan Patel
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
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50
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Mortimer GM, Minchin RF. Cryptic epitopes and functional diversity in extracellular proteins. Int J Biochem Cell Biol 2016; 81:112-120. [DOI: 10.1016/j.biocel.2016.10.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 01/28/2023]
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