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Lambrecht MA, Rombouts I, De Ketelaere B, Delcour JA. Prediction of heat-induced polymerization of different globular food proteins in mixtures with wheat gluten. Food Chem 2016; 221:1158-1167. [PMID: 27979074 DOI: 10.1016/j.foodchem.2016.11.043] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/11/2016] [Accepted: 11/08/2016] [Indexed: 11/16/2022]
Abstract
Egg, soy or whey protein co-exists with wheat gluten in different food products. Different protein types impact each other during heat treatment. A positive co-protein effect occurs when heat-induced polymerization of a mixture of proteins is more intense than that of the isolated proteins. The intrinsic protein characteristics of globular proteins which enhance polymerization in mixtures with gluten are unknown. In this report, a model was developed to predict potential co-protein effects in mixtures of gluten and globular proteins during heating at 100°C. A negative co-protein effect with addition of lysozyme, no co-protein effect with soy glycinin or egg yolk and positive co-protein effects with bovine serum albumin, (S-)ovalbumin, egg white, whole egg, defatted egg yolk, wheat albumins and wheat globulins were detected. The level of accessible free sulfhydryl groups and the surface hydrophobicity of unfolded globular proteins were the main characteristics in determining the co-protein effects in gluten mixtures.
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Affiliation(s)
- Marlies A Lambrecht
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001 Leuven, Belgium.
| | - Ine Rombouts
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001 Leuven, Belgium.
| | - Bart De Ketelaere
- KU Leuven, Department of Biosystems, Kasteelpark Arenberg 30, B-3001 Heverlee, Belgium.
| | - Jan A Delcour
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001 Leuven, Belgium.
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52
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Karimi M, Bahrami S, Ravari SB, Zangabad PS, Mirshekari H, Bozorgomid M, Shahreza S, Sori M, Hamblin MR. Albumin nanostructures as advanced drug delivery systems. Expert Opin Drug Deliv 2016; 13:1609-1623. [PMID: 27216915 PMCID: PMC5063715 DOI: 10.1080/17425247.2016.1193149] [Citation(s) in RCA: 217] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 05/18/2016] [Indexed: 12/31/2022]
Abstract
INTRODUCTION One of the biggest impacts that the nanotechnology has made on medicine and biology, has been in the area of drug delivery systems (DDSs). Many drugs suffer from serious problems concerning insolubility, instability in biological environments, poor uptake into cells and tissues, sub-optimal selectivity for targets and unwanted side effects. Nanocarriers can be designed as DDSs to overcome many of these drawbacks. One of the most versatile building blocks to prepare these nanocarriers is the ubiquitous, readily available and inexpensive protein, serum albumin. Areas covered: This review covers the use of different types of albumin (human, bovine, rat, and chicken egg) to prepare nanoparticle and microparticle-based structures to bind drugs. Various methods have been used to modify the albumin structure. A range of targeting ligands can be attached to the albumin that can be recognized by specific cell receptors that are expressed on target cells or tissues. Expert opinion: The particular advantages of albumin used in DDSs include ready availability, ease of chemical modification, good biocompatibility, and low immunogenicity. The regulatory approvals that have been received for several albumin-based therapeutic agents suggest that this approach will continue to be successfully explored.
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Affiliation(s)
- Mahdi Karimi
- a Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine , Iran University of Medical Sciences , Tehran , Iran
| | - Sajad Bahrami
- a Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine , Iran University of Medical Sciences , Tehran , Iran
- b Nanomedicine Research Association (NRA) , Universal Scientific Education and Research Network (USERN) , Tehran , Iran
| | - Soodeh Baghaee Ravari
- c Joint School of Nanoscience and Nanoengineering , University of North Carolina at Greensboro , Greensboro , NC , USA
| | - Parham Sahandi Zangabad
- d Department of Materials Science and Engineering , Sharif University of Technology , Tehran , Iran
| | - Hamed Mirshekari
- e Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG) , Iran University of Medical Sciences , Tehran , Iran
| | - Mahnaz Bozorgomid
- f Department of Applied Chemistry , Islamic Azad University, Central Tehran Branch , Tehran , Iran
| | - Somayeh Shahreza
- g Department of Microbiology, School of Biology , University College of Sciences, University of Tehran , Tehran , Iran
| | - Masume Sori
- a Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine , Iran University of Medical Sciences , Tehran , Iran
| | - Michael R Hamblin
- h Wellman Center for Photomedicine , Massachusetts General Hospital , Boston , MA , USA
- i Department of Dermatology , Harvard Medical School , Boston , MA , USA
- j Harvard-MIT Division of Health Sciences and Technology , Cambridge , MA , USA
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53
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The characterization of 1-(4-bromophenyl)-5-phenyl-1H-1,2,3-triazole on acute toxicity, antimicrobial activities, photophysical property, and binding to two globular proteins. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 164:191-203. [PMID: 27693762 DOI: 10.1016/j.jphotobiol.2016.09.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 09/22/2016] [Indexed: 11/24/2022]
Abstract
1-(4-Bromophenyl)-5-phenyl-1H-1,2,3-triazole (BPT) was a newly synthesized compound. The acute toxicities of BPT to mice by intragastric administration have been determined and the result indicates that the intragastric administration of BPT did not produce any significant toxic effect on Kunming strain mice. It is also evaluated for the antimicrobial activity of BPT against three kinds of plant mycoplasma, Fusarium Wilt (race 4), Colletotrichum gloeosporioides Penz. and Xanthomonas oryzae by different method in vitro. The compound exhibited distinct inhibitory activities against Fusarium Wilt (race 4) and Colletotrichum gloeosporioides Penz. by mycelium growth rate test and the values of EC50 were 29.34 and 12.53μg/mL respectively. And BPT had also the most potent inhibitory activities against Xanthomonas oryzae when compared with that of control drugs by the agar well diffusion method. In addition, the structural and photophysical properties of BPT including ionization energy, electron affinities, and theoretical spectrum was studied by quantum-chemical methods. Then the interaction of BPT with two kinds of globular proteins, human immunoglobulin (HIg) and bovine hemoglobin (BHg) was investigated by using UV-vis absorption spectra, synchronous fluorescence, 3D fluorescence spectra, and fluorescence titration in combination with molecular modeling. UV-vis absorption, 3D and synchronous fluorescence measurements show that BPT has influence on the microenvironment surrounding HIg or BHg in aqueous solution and the fluorescence experiments show that BPT quenches the fluorescence intensity of HIg or BHg through a static mechanism. The binding parameters including the binding constants, the number of binding site and average binding distance between BPT and HIg or BHg at different temperatures were calculated. The thermodynamic parameters suggest that the hydrophobic interaction is the predominant intermolecular forces in stabilizing the BPT-HIg or BPT-BHg complex. Molecular docking was performed to reveal that the BPT moiety binds to the hydrophobic cavity of HIg or BHg and they are in good agreement with the spectroscopic measurements.
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54
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Hsieh SR, Reddy PM, Chang CJ, Kumar A, Wu WC, Lin HY. Exploring the Behavior of Bovine Serum Albumin in Response to Changes in the Chemical Composition of Responsive Polymers: Experimental and Simulation Studies. Polymers (Basel) 2016; 8:E238. [PMID: 30979331 PMCID: PMC6432219 DOI: 10.3390/polym8060238] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/13/2016] [Accepted: 06/13/2016] [Indexed: 01/06/2023] Open
Abstract
Knowledge of the interactions between polymer and protein is very important to fabricate the potential materials for many bio-related applications. In this regard, the present work investigated the effect of copolymers on the conformation and thermal stability of bovine serum albumin (BSA) with the aid of biophysical techniques such as fluorescence spectroscopy, circular dichroism (CD) spectroscopy and differential scanning calorimetry (DSC). In comparison with that of copolymer PGA-1.5, our fluorescence spectroscopy results reveal that the copolymer PGA-1, which has a lower PEGMA/AA ratio, shows greater influence on the conformation of BSA. Copolymers induced unfolding of the polypeptide chain of BSA, which was confirmed from the loss in the negative ellipticity of CD spectra. DSC results showed that the addition of PGA-1 and PGA-1.5 (0.05% (w/v) decreased the transition temperature by 14.8 and 11.5 °C, respectively). The results from the present study on the behavior of protein in response to changes in the chemical composition of synthetic polymers are significant for various biological applications such as enzyme immobilization, protein separations, sensor development and stimuli-responsive systems.
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Affiliation(s)
- Shih-Rong Hsieh
- Department of Surgery, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Section 4, Taichung 40705, Taiwan.
| | - P Madhusudhana Reddy
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan.
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan.
| | - Awanish Kumar
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| | - Wan-Chi Wu
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan.
| | - Hui-Yi Lin
- School of Pharmacy, China Medical University, 91, Hsueh-Shih Road, Taichung 40402, Taiwan.
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55
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Influence of the oxidation state of the metal center on the interaction of ruthenium complex with HSA. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1659-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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56
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Ali M, Kumar A, Kumar M, Pandey BN. The interaction of human serum albumin with selected lanthanide and actinide ions: Binding affinities, protein unfolding and conformational changes. Biochimie 2016; 123:117-29. [PMID: 26821345 DOI: 10.1016/j.biochi.2016.01.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 01/22/2016] [Indexed: 10/22/2022]
Abstract
Human serum albumin (HSA), the most abundant soluble protein in blood plays critical roles in transportation of biomolecules and maintenance of osmotic pressure. In view of increasing applications of lanthanides- and actinides-based materials in nuclear energy, space, industries and medical applications, the risk of exposure with these metal ions is a growing concern for human health. In present study, binding interaction of actinides/lanthanides [thorium: Th(IV), uranium: U(VI), lanthanum: La(III), cerium: Ce(III) and (IV)] with HSA and its structural consequences have been investigated. Ultraviolet-visible, Fourier transform-infrared, Raman, Fluorescence and Circular dichroism spectroscopic techniques were applied to study the site of metal ions interaction, binding affinity determination and the effect of metal ions on protein unfolding and HSA conformation. Results showed that these metal ions interacted with carbonyl (CO..:)/amide(N..-H) groups and induced exposure of aromatic residues of HSA. The fluorescence analysis indicated that the actinide binding altered the microenvironment around Trp214 in the subdomain IIA. Binding affinity of U(VI) to HSA was slightly higher than that of Th(IV). Actinides and Ce(IV) altered the secondary conformation of HSA with a significant decrease of α-helix and an increase of β-sheet, turn and random coil structures, indicating a partial unfolding of HSA. A correlation was observed between metal ion's ability to alter HSA conformation and protein unfolding. Both cationic effects and coordination ability of metal ions seemed to determine the consequences of their interaction with HSA. Present study improves our understanding about the protein interaction of these heavy ions and their impact on its secondary structure. In addition, binding characteristics may have important implications for the development of rational antidote for the medical management of health effects of actinides and lanthanides.
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Affiliation(s)
- Manjoor Ali
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 85, India
| | - Amit Kumar
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 85, India.
| | - Mukesh Kumar
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 85, India
| | - Badri N Pandey
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 85, India
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57
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Dey G, Gaur P, Giri R, Ghosh S. Optical signaling in biofluids: a nondenaturing photostable molecular probe for serum albumins. Chem Commun (Camb) 2016; 52:1887-90. [DOI: 10.1039/c5cc08479b] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Conceptually new molecular designs as nondenaturing emissive materials for the detection and quantification of serum albumins in biofluids.
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Affiliation(s)
- Gourab Dey
- School of Basic Sciences
- Indian Institute of Technology Mandi
- India
| | - Pankaj Gaur
- School of Basic Sciences
- Indian Institute of Technology Mandi
- India
| | - Rajanish Giri
- School of Basic Sciences
- Indian Institute of Technology Mandi
- India
| | - Subrata Ghosh
- School of Basic Sciences
- Indian Institute of Technology Mandi
- India
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58
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Russell BA, Jachimska B, Kralka I, Mulheran PA, Chen Y. Human serum albumin encapsulated gold nanoclusters: effects of cluster synthesis on natural protein characteristics. J Mater Chem B 2016; 4:6876-6882. [DOI: 10.1039/c6tb01827k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The differences in the physiochemical properties between native Human Serum Albumin (HSA) and HSA encapsulated gold nanoclusters (HSA-AuNCs) are characterised.
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Affiliation(s)
- B. A. Russell
- Department of Physics
- Strathclyde University
- Glasgow G4 0NG
- UK
| | - B. Jachimska
- Jerzy Haber Institute of Catalysis and Surface Chemistry
- Polish Academy of Sciences
- 30-239 Cracow
- Poland
| | - I. Kralka
- Jerzy Haber Institute of Catalysis and Surface Chemistry
- Polish Academy of Sciences
- 30-239 Cracow
- Poland
| | - P. A. Mulheran
- Department of Chemical and Process Engineering
- Strathclyde University
- Glasgow G1 1XJ
- UK
| | - Y. Chen
- Department of Physics
- Strathclyde University
- Glasgow G4 0NG
- UK
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59
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Wang YR, Feng L, Xu L, Li Y, Wang DD, Hou J, Zhou K, Jin Q, Ge GB, Cui JN, Yang L. A rapid-response fluorescent probe for the sensitive and selective detection of human albumin in plasma and cell culture supernatants. Chem Commun (Camb) 2016; 52:6064-7. [DOI: 10.1039/c6cc00119j] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A rapid-response fluorescent probeACDMwas developed for selective and sensitive detection of human albumin (HA)viabinding on a non-drug binding site.
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Affiliation(s)
- Yi-Ru Wang
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
- Dalian Medical University
| | - Lei Feng
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- China
| | - Liang Xu
- School of Chemistry
- Dalian University of Technology
- Dalian
- China
| | - Yan Li
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
| | - Dan-Dan Wang
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
| | - Jie Hou
- Dalian Medical University
- Dalian 116044
- China
| | - Kun Zhou
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
| | - Qiang Jin
- Dalian Medical University
- Dalian 116044
- China
| | - Guang-Bo Ge
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
- State Key Laboratory of Fine Chemicals
| | - Jing-Nan Cui
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- China
| | - Ling Yang
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
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60
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Ali MS, Al-Lohedan HA. Interaction of biocompatible sugar based surfactant n-dodecyl β-d-maltoside with lysozyme. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.05.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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61
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Ashrafi-Kooshk MR, Ebrahimi F, Ranjbar S, Ghobadi S, Moradi N, Khodarahmi R. Comparative studies on drug binding to the purified and pharmaceutical-grade human serum albumins: Bridging between basic research and clinical applications of albumin. Biologicals 2015; 43:333-43. [PMID: 26254507 DOI: 10.1016/j.biologicals.2015.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 07/04/2015] [Accepted: 07/09/2015] [Indexed: 11/25/2022] Open
Abstract
Human serum albumin (HSA), the most abundant protein in blood plasma, is a monomeric multidomain protein that possesses an extraordinary capacity for binding, so that serves as a circulating depot for endogenous and exogenous compounds. During the heat sterilization process, the structure of pharmaceutical-grade HSA may change and some of its activities may be lost. In this study, to provide deeper insight on this issue, we investigated drug-binding and some physicochemical properties of purified albumin (PA) and pharmaceutical-grade albumin (PGA) using two known drugs (indomethacin and ibuprofen). PGA displayed significantly lower drug binding capacity compared to PA. Analysis of the quenching and thermodynamic parameters indicated that intermolecular interactions between the drugs and the proteins are different from each other. Surface hydrophobicity as well as the stability of PGA decreased compared to PA, also surface hydrophobicity of PA and PGA increased upon drugs binding. Also, kinetic analysis of pseudo-esterase activities indicated that Km and Vmax parameters for PGA enzymatic activity are more and less than those of PA, respectively. This in vitro study demonstrates that the specific drug binding of PGA is significantly reduced. Such studies can act as connecting bridge between basic research discoveries and clinical applications.
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Affiliation(s)
| | - Farangis Ebrahimi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Samira Ranjbar
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sirous Ghobadi
- Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran
| | - Nastaran Moradi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran; Students' Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Khodarahmi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Pharmacognosy and Biotechnology, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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62
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Ghosh N, Mondal R, Mukherjee S. Hydrophobicity is the governing factor in the interaction of human serum albumin with bile salts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1095-104. [PMID: 25549008 DOI: 10.1021/la504270a] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The present study demonstrates a detailed characterization of the interaction of a series of bile salts, sodium deoxycholate (NaDC), sodium cholate (NaC), and sodium taurocholate (NaTC), with a model transport protein, human serum albumin (HSA). Here, steady-state and time-resolved fluorescence spectroscopic techniques have been used to characterize the interaction of the bile salts with HSA. The binding isotherms constructed from steady-state fluorescence intensity measurements demonstrate that the interaction of the bile salts with HSA can be characterized by three distinct regions, which were also successfully reproduced from the significant variation of the emission wavelength (λ(em)) of the intrinsic tryptophan (Trp) moiety of HSA. The time-resolved fluorescence decay behavior of the Trp residue of HSA was also found to corroborate the steady-state results. The effect of interaction with the bile salts on the native conformation of the protein has been explored in a circular dichroism (CD) study, which reveals a decrease in α-helicity of HSA induced by the bile salts. In accordance with this, the esterase activity of the protein-bile salt aggregates is found to be reduced in comparison to that of the native protein. Our results exclusively highlight the fact that it is the hydrophobic character of the bile salt that governs the extent of interaction with the protein. Isothermal titration calorimetry (ITC) and molecular docking studies further substantiate our other experimental findings.
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Affiliation(s)
- Narayani Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
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63
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Russell BA, Kubiak-Ossowska K, Mulheran PA, Birch DJS, Chen Y. Locating the nucleation sites for protein encapsulated gold nanoclusters: a molecular dynamics and fluorescence study. Phys Chem Chem Phys 2015; 17:21935-41. [DOI: 10.1039/c5cp02380g] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Fluorescent gold nanoclusters encapsulated by proteins have attracted considerable attention in recent years for their unique properties as new fluorescence probes for biological sensing and imaging.
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Affiliation(s)
- B. A. Russell
- Department of Physics
- Strathclyde University
- Glasgow G4 0NG
- UK
| | - K. Kubiak-Ossowska
- Department of Chemical and Process Engineering
- Strathclyde University
- Glasgow G1 1XJ
- UK
| | - P. A. Mulheran
- Department of Chemical and Process Engineering
- Strathclyde University
- Glasgow G1 1XJ
- UK
| | - D. J. S. Birch
- Department of Physics
- Strathclyde University
- Glasgow G4 0NG
- UK
| | - Y. Chen
- Department of Physics
- Strathclyde University
- Glasgow G4 0NG
- UK
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64
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Zhdanova NG, Shirshin EA, Maksimov EG, Panchishin IM, Saletsky AM, Fadeev VV. Tyrosine fluorescence probing of the surfactant-induced conformational changes of albumin. Photochem Photobiol Sci 2015; 14:897-908. [DOI: 10.1039/c4pp00432a] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Tyrosine fluorescence in native proteins is known to be effectively quenched, whereas its emission increases upon proteins’ unfolding.
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Affiliation(s)
- Nadezda G. Zhdanova
- Department of Physics
- M.V. Lomonosov Moscow State University
- Moscow 119991
- Russia
| | - Evgeny A. Shirshin
- Department of Physics
- M.V. Lomonosov Moscow State University
- Moscow 119991
- Russia
| | - Eugene G. Maksimov
- Department of Biology
- M.V. Lomonosov Moscow State University
- Moscow 119991
- Russia
| | - Ivan M. Panchishin
- Department of Physics
- M.V. Lomonosov Moscow State University
- Moscow 119991
- Russia
| | | | - Victor V. Fadeev
- Department of Physics
- M.V. Lomonosov Moscow State University
- Moscow 119991
- Russia
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65
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Gong X, Sharma AK, Strano MS, Mukhopadhyay D. Selective assembly of DNA-conjugated single-walled carbon nanotubes from the vascular secretome. ACS NANO 2014; 8:9126-36. [PMID: 25184956 PMCID: PMC4174097 DOI: 10.1021/nn5026912] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Colloidal dispersion of single-walled carbon nanotubes (SWCNTs) is often the first processing step to many of their unique applications. However, dispersed SWCNTs often exist in kinetically trapped states where aggregation can be of concern. Recent work revealed prominent DNA-SWCNT aggregation following intravascular injection. In this study, we performed detailed analysis of DNA-SWCNT aggregate formation, structure, and composition in the context of endothelial cell condition media. Interestingly, we found that aggregates formed within condition media from cells that have undergone a stress response differ in size and organization from that of the control. We also found that temperature increases also promote DNA-SWCNT associations. A mathematical model was developed to describe the kinetics of SWCNT extraction from solution. Through orthogonal optical analysis and imaging modalities, we verified that proteins form the bulk of the aggregate structure and dictate aggregate assembly at multiple levels of organization. Finally, physiochemical analysis indicated preferential extraction of low-abundance hydrophobic and charged proteins. The formed aggregates also remain relatively stable in solution, making them potential macroscopic indicators of solution content.
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Affiliation(s)
- Xun Gong
- Department of Physiology and Biomedical Engineering and Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota 55904, United States
| | - Anil K. Sharma
- Department of Physiology and Biomedical Engineering and Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota 55904, United States
| | - Michael S. Strano
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Debabrata Mukhopadhyay
- Department of Physiology and Biomedical Engineering and Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota 55904, United States
- Address correspondence to
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66
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Das NK, Ghosh N, Kale AP, Mondal R, Anand U, Ghosh S, Tiwari VK, Kapur M, Mukherjee S. Temperature Induced Morphological Transitions from Native to Unfolded Aggregated States of Human Serum Albumin. J Phys Chem B 2014; 118:7267-76. [DOI: 10.1021/jp5030944] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nirmal Kumar Das
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Narayani Ghosh
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Ajit Prabhakar Kale
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Ramakanta Mondal
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Uttam Anand
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Subhadip Ghosh
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Virendra Kumar Tiwari
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Manmohan Kapur
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Saptarshi Mukherjee
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
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Ganguly A, Paul BK, Ghosh S, Dalapati S, Guchhait N. Interaction of a potential chloride channel blocker with a model transport protein: a spectroscopic and molecular docking investigation. Phys Chem Chem Phys 2014; 16:8465-75. [DOI: 10.1039/c3cp53843e] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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