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El Balkhi S, Rahali MA, Lakis R, Sauvage FL, Martin M, Janaszkiewicz A, Lawson R, Goncalves R, Carrier P, Loustaud-Ratti V, Guyot A, Marquet P, Di Meo F, Saint-Marcoux F. Early detection of liver injuries by the Serum enhanced binding test sensitive to albumin post-transcriptional modifications. Sci Rep 2024; 14:1434. [PMID: 38228668 PMCID: PMC10791642 DOI: 10.1038/s41598-024-51412-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 01/04/2024] [Indexed: 01/18/2024] Open
Abstract
Early and sensitive biomarkers of liver dysfunction and drug-induced liver injury (DILI) are still needed, both for patient care and drug development. We developed the Serum Enhanced Binding (SEB) test to reveal post-transcriptional modifications (PTMs) of human serum albumin resulting from hepatocyte dysfunctions and further evaluated its performance in an animal model. The SEB test consists in spiking serum ex-vivo with ligands having specific binding sites related to the most relevant albumin PTMs and measuring their unbound fraction. To explore the hypothesis that albumin PTMs occur early during liver injury and can also be detected by the SEB test, we induced hepatotoxicity in male albino Wistar rats by administering high daily doses of ethanol and CCl4 over several days. Blood was collected for characterization and quantification of albumin isoforms by high-resolution mass spectrometry, for classical biochemical analyses as well as to apply the SEB test. In the exposed rats, the appearance of albumin isoforms paralleled the positivity of the SEB test ligands and histological injuries. These were observed as early as D3 in the Ethanol and CCl4 groups, whereas the classical liver tests (ALT, AST, PAL) significantly increased only at D7. The behavior of several ligands was supported by structural and molecular simulation analysis. The SEB test and albumin isoforms revealed hepatocyte damage early, before the current biochemical biomarkers. The SEB test should be easier to implement in the clinics than albumin isoform profiling.
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Affiliation(s)
- Souleiman El Balkhi
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France.
- Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France.
- Pharmacology-Toxicology and Pharmacovigilance Department, Centre de Biologie Et de Recherche en Santé (CBRS), 2, Av. Martin Luther King, 87042, Limoges Cedex, France.
| | - Mohamad Ali Rahali
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
| | - Roy Lakis
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
| | | | | | | | - Roland Lawson
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
| | | | - Paul Carrier
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Liver Disease, CHU Limoges, Limoges, France
| | - Veronique Loustaud-Ratti
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Liver Disease, CHU Limoges, Limoges, France
| | - Anne Guyot
- Department of Pathology, CHU Limoges, Limoges, France
| | - Pierre Marquet
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
| | | | - Franck Saint-Marcoux
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
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Lakis R, Sauvage FL, Pinault E, Marquet P, Saint-Marcoux F, El Balkhi S. Semi-synthetic human albumin isoforms: Production, structure, binding capacities and influence on a routine laboratory test. Int J Biol Macromol 2023; 250:126239. [PMID: 37572814 DOI: 10.1016/j.ijbiomac.2023.126239] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/02/2023] [Accepted: 08/07/2023] [Indexed: 08/14/2023]
Abstract
Human Serum Albumin (HSA) undergoes Post-Translational-Modifications (PTMs) leading to isoforms affecting its oncotic and non-oncotic properties. HSA is comprised of several isoforms whose abundance may vary with pathologies such as diabetes, kidney and liver diseases. Studying their impact separately may help to understand their sources and potential pathogenicity and further their evaluation as biomarkers. The present study examined semi-synthetic HSA isoforms to investigate independently their structure by means of advanced mass spectrometry techniques (LC-TOF-MS and ICP-MS), influence on the HSA binding/antioxidant activities using a binding capacity test, and potential impact on albumin quantification by a routine immunoturbidimetric assay. Applying different chemical reactions to a commercial HSA solution, we obtained different solutions enriched up to 53 % of native HSA, 78 % of acetylated HSA, 71 % of cysteinylated HSA, 94 % of oxidized HSA, 58 % of nitrosylated HSA and 96 % of glycated HSA, respectively. Moreover, the semi-synthetic isoforms showed differently altered binding capacities for a panel of ligands (Cu, Cd, Au, Ds and L-T4). Furthermore, immunoturbidimetry was found to be insensitive to the presence and abundance of the different isoforms. The fully characterized semi synthetic HSA isoforms obtained should be useful to further investigate their pathogenicity and potential roles as biomarkers.
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Affiliation(s)
- Roy Lakis
- P&T, UMR1248, University of Limoges, National Institute for Health and Medical Research (INSERM), Limoges, France
| | - François-Ludovic Sauvage
- P&T, UMR1248, University of Limoges, National Institute for Health and Medical Research (INSERM), Limoges, France
| | - Emilie Pinault
- P&T, UMR1248, University of Limoges, National Institute for Health and Medical Research (INSERM), Limoges, France
| | - Pierre Marquet
- P&T, UMR1248, University of Limoges, National Institute for Health and Medical Research (INSERM), Limoges, France; Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
| | - Franck Saint-Marcoux
- P&T, UMR1248, University of Limoges, National Institute for Health and Medical Research (INSERM), Limoges, France; Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
| | - Souleiman El Balkhi
- P&T, UMR1248, University of Limoges, National Institute for Health and Medical Research (INSERM), Limoges, France; Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France.
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Gokavi NM, Nandibewoor ST, Gowda JI. Investigations of the Interaction Mechanism Between Orphenadrine Hydrochloride and Bovine Serum Albumin by Spectroscopic and Voltammetric Techniques. J Fluoresc 2023; 33:2061-2073. [PMID: 36976401 DOI: 10.1007/s10895-023-03199-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 03/03/2023] [Indexed: 03/29/2023]
Abstract
The interaction of orphenadrine hydrochloride (ORD) with the model protein, bovine serum albumin (BSA), was investigated using a variety of spectroscopic techniques such as steady-state fluorescence, ultraviolet-visible, Fourier transform infrared, 3-D spectroscopy, and electrochemical methods under physiological conditions. Stern-Volmer plots were used to calculate fluorescence quenching at various temperatures. The findings point to a static quenching mechanism between ORD and BSA. At various reaction times, the binding sites (n) and binding constants (K) of ORD to BSA were recorded. Thermodynamic parameters ∆H0, ∆S0 and ∆G0 between ORD and BSA were calculated and reported. The average binding distance (r) between the donor (BSA) and acceptor (ORD) molecules was predicted using Förster's theory. Three-dimensional fluorescence spectra, Fourier transform infrared spectra, and synchronous fluorescence studies all supported the alternations in protein structure following the interaction with ORD. A displacement study using site probes such as warfarin, ibuprofen, and digitoxin confirmed ORD binding at Sudlow's site I of BSA. The effect of common metal ions such as Cu2+, Ni2+, Ca2+, Co2+, and Zn2+ on binding constant values was investigated and reported.
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Affiliation(s)
- Naveen M Gokavi
- P. G. Department of Studies in Chemistry, Karnatak University, Dharwad, Karnataka, 580003, India
- Department of Chemistry, Karnatak Science College, Dharwad, Karnataka, 580001, India
| | - Sharanappa T Nandibewoor
- P. G. Department of Studies in Chemistry, Karnatak University, Dharwad, Karnataka, 580003, India
| | - Jayant I Gowda
- Department of Chemistry, BLDEA's Commerce, BHS Arts and TGP Science College, Jamkhandi, Karnataka, 587301, India.
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da Silva Dos Reis Condé CA, de Andrade Querino AL, Silva H, Navarro M. Silver(I) complexes containing N-heterocyclic carbene azole drugs: Synthesis, characterization, cytotoxic activity, and their BSA interactions. J Inorg Biochem 2023; 246:112303. [PMID: 37413946 DOI: 10.1016/j.jinorgbio.2023.112303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/08/2023]
Abstract
Cancer is one of the main public health problems globally, there is a public demand for better drugs. Rational strategies or approaches are used to improve the success of drug discovery. Our strategy was to the repurposing of well-known antifungal agents as potential anticancer drugs, such as Clotrimazole (CTZ) and Ketoconazole (KTZ). We prepared the respective iodide imidazolium salt L1: (CTZ-Me)I and L2: (KTZ-Me)I to be the intermediates toward the synthesis of its respective NHC ligand and achieve the respective silver(I)-monoNHC and silver(I)-bisNHC derivatives: [Ag(L1)I] (1), [AgI(L2)] (2) [Ag(L1)2]I. (3), [Ag(L2)2]I. (4), as well as their corresponding coordination compounds [Ag(CTZ)2]NO3 (5) and [Ag(KTZ)2]NO3 (6) where these ligands (CTZ and KTZ) coordinate to silver through the N-imidazole atom. These compounds (L1, L2 and complexes 1-6) exhibited significant activity against the tested cancer cell lines (B16-F1, murine melanoma strains and CT26WT, murine colon carcinoma). The silver(I) complexes were more active than the free ligands, complexes 2 and 4 being the most selective in B16-F1 cancer cell line. Two possibles biological targets such as DNA and albumin were examined for the observed anticancer activity. Results show that DNA is not the main target, however, the interactions with albumin suggest it can transport/delivery the metal complexes.
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Affiliation(s)
- Camila Aparecida da Silva Dos Reis Condé
- Laboratório de Química Bioinorgânica e Catálises (LaQBIC), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Ana Luiza de Andrade Querino
- Laboratório de Síntese e Interações Bioinorgânicas (SibLab), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Heveline Silva
- Laboratório de Síntese e Interações Bioinorgânicas (SibLab), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maribel Navarro
- Laboratório de Química Bioinorgânica e Catálises (LaQBIC), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil.
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Fan J, Gao A, Zhan C, Jin Y. Degradation of soybean meal proteins by wheat malt endopeptidase and the antioxidant capacity of the enzymolytic products. Front Nutr 2023; 10:1138664. [PMID: 36937341 PMCID: PMC10020175 DOI: 10.3389/fnut.2023.1138664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 02/15/2023] [Indexed: 03/06/2023] Open
Abstract
This study investigated the hydrolysis effect of the endopeptidase from wheat malt on the soybean meal proteins. The results indicated that the endopeptidase broke the peptide bonds of soybean meal proteins and converted the alcohol- and alkali-soluble proteins into water-soluble and salt-soluble proteins. In addition, wheat malt endopeptidase did not break the disulfide bonds between proteins but affected the conformation of disulfide bonds between substrate protein molecules, which were changed from the gauche-gauche-trans (g-g-t) vibrational mode to the trans-gauche-trans (t-g-t) vibrational mode. Wheat malt endopeptidase exhibited the highest enzymatic activity at 2 h of enzymatic digestion, demonstrating the fastest hydrolytic rate of soybean meal proteins. Compared with the samples before enzymatic hydrolysis, the total alcohol- and alkali-soluble proteins were decreased by 11.89% but the water- and salt-soluble proteins were increased by 11.99%, indicating the hydrolytic effect of endopeptidase. The corresponding water-soluble proteins had molecular weights of 66.4-97.2, 29-44.3, and 20.1 kDa, while the salt-soluble proteins had molecular weights of 44.3-66.4, 29-44.3, and 20.1 kDa, respectively. The degree of enzymatic hydrolysis of soybean meal reached the maximum at 8 h. The newly created proteins exhibited significantly antioxidant properties, which were inversely related to the molecular weight. Proteins with molecular weight <3 kDa had the highest antioxidant performance with an antioxidant capacity of 1.72 ± 0.03 mM, hydroxyl radical scavenging rate of 98.04%, and ABTS [2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)] radical scavenging capacity of 0.44 ± 0.04 mM.
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Affiliation(s)
- Jingxiao Fan
- College of Food Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Aiying Gao
- Food Inspection Department, Institute for Food and Drug Control (Taian Fiber Inspection Institute), Tai'an, China
| | - Chao Zhan
- College of Food Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Yuhong Jin
- College of Food Science and Engineering, Shandong Agricultural University, Tai'an, China
- *Correspondence: Yuhong Jin
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Liang D, Fan W, Wu Y, Wang Y. Effect of organic matter on the trophic transfer of silver nanoparticles in an aquatic food chain. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129521. [PMID: 35816795 DOI: 10.1016/j.jhazmat.2022.129521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/08/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
The behavior and toxicity of nanoparticles could be affected significantly by the ubiquitous natural organic matter (NOM) in aquatic environments. However, the influence of NOM on nanoparticles along the food chain remains largely unknown. This study constructed bacteria Escherichia coli (E. coli) - protozoa Tetrahymena thermophila (T. thermophila) to evaluate the influence of NOM on the bioaccumulation, trophic transfer and toxicity of silver nanoparticles (Ag NPs). Results demonstrated that NOM could reduce the toxicity of Ag NPs to E. coli and T. thermophila by different influence mechanisms (e.g., reduce Ag NPs accumulation or complex with dissolved silver ion (Ag+)) which related to the type of NOM and organisms. Moreover, Ag NPs can be transferred and biomagnified to T. thermophila via trophic transfer. Three typical NOM could significantly increase the trophic transfer factors of Ag NPs ranging from 1.16 to 2.49, which may be ascribed to NOM reducing the capacity for T. thermophila to excrete total silver (Ag) as NOM could significantly change the form of Ag. These findings provide a novel insight into the impact of NOM on the ecological risk posed by Ag NPs through the food chain and emphasize the need to understand further the interactions between nanoparticles and NOM in various ecosystems.
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Affiliation(s)
- Dingyuan Liang
- School of Space and Environment, Beihang University, Beijing 100191, PR China
| | - Wenhong Fan
- School of Space and Environment, Beihang University, Beijing 100191, PR China; Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, Beijing 100191, PR China
| | - You Wu
- School of Space and Environment, Beihang University, Beijing 100191, PR China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Ying Wang
- School of Space and Environment, Beihang University, Beijing 100191, PR China; Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, Beijing 100191, PR China.
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Structural and Biochemical Features of Human Serum Albumin Essential for Eukaryotic Cell Culture. Int J Mol Sci 2021; 22:ijms22168411. [PMID: 34445120 PMCID: PMC8395139 DOI: 10.3390/ijms22168411] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/30/2021] [Accepted: 08/04/2021] [Indexed: 12/16/2022] Open
Abstract
Serum albumin physically interacts with fatty acids, small molecules, metal ions, and several other proteins. Binding with a plethora of bioactive substances makes it a critical transport molecule. Albumin also scavenges the reactive oxygen species that are harmful to cell survival. These properties make albumin an excellent choice to promote cell growth and maintain a variety of eukaryotic cells under in vitro culture environment. Furthermore, purified recombinant human serum albumin is mostly free from impurities and modifications, providing a perfect choice as an additive in cell and tissue culture media while avoiding any regulatory constraints. This review discusses key features of human serum albumin implicated in cell growth and survival under in vitro conditions.
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Mollahosseini A, Argumeedi S, Abdelrasoul A, Shoker A. A case study of poly (aryl ether sulfone) hemodialysis membrane interactions with human blood: Molecular dynamics simulation and experimental analyses. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2020; 197:105742. [PMID: 32947069 DOI: 10.1016/j.cmpb.2020.105742] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
Patients with end-stage renal diseases (ESRD) require specific health cares as the accumulation of toxins due to the lack of kidney functionality would affect their lives. However, the mortality rate is still high due to cardiovascular diseases, socks, etc. A majority of patients with chronic kidney disease (CKD) require hemodialysis services. Blood purifying membranes, as the main component of hemodialysis setups, however, still suffer from lack of optimum biocompatibility, which results in morbidity and mortality of hemodialysis service receiving patients. The goal of the present case study is to have an in-depth understanding of the current blood-hemodialysis membrane interactions occurring during hemodialysis sessions using poly (aryl ether sulfone)-poly (vinyl pyrrolidone) (PAES-PVP) membrane. Attenuated total reflectance-Fourier transmission infrared (ATR-FTIR) spectroscopy, Raman spectroscopy, and solid-state nuclear magnetic resonance (SSNMR) spectroscopy were used to assess the initial chemical structure of the PAES-PVP membrane along with the variations after with the infections with human blood. Furthermore, scanning electron microscopy (SEM) and Transition electron microscopy (TEM) were used to visualize the structural variation of the membrane, blood aggregations, and blood clots on the membrane surface. Besides, Molecular dynamics (MD) simulation was used to assess the interaction of PAES-PVP with major human blood proteins, in terms of interaction energy, which is a novel contribution to the area. The macromolecules (human serum albumin (HSA), human serum transferrin (TRF), and human fibrinogen (HFG)) were chosen from the plasma protein component. These protein structures were chosen based on their different molecular size. Three advanced spectroscopy techniques and two advanced visualization techniques were used for the assessment of the membranes. Spectroscopy studies revealed amine related peak displacement and intensity shifts as indices for attachment of biological species to the polymeric membrane surfaces. Raman peaks around 370, 798, and 1299 cm-1, which experienced significant shifts that were related to carbon-nitrogen and sulfur-oxygen bonds due to protein adhesion. Visualization techniques illustrated blood protein fouling patterns and extracellular vesicles' presence in the pore structures into membranes. The findings highlight the importance of whole structure biocompatibility improvement, rather than only focusing on surface modifications of hemodialysis membranes. Molecular dynamics simulation assessment showed various interaction behaviors for different proteins suggesting molecular weight and active residues of the protein macromolecules play an important role in interacting with polymeric structure. FB had the highest interaction (4,274,749.07 kcal/mol) and binding (10,370.90 kcal/mol) energy with the PAES-PVP structure. TRF owned the lowest interaction energy with respect to its lower molecular weight and fewer active residue count.
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Affiliation(s)
- Arash Mollahosseini
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon S7N 5A9, Saskatchewan, Canada
| | - Srija Argumeedi
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon S7N 5A9, Saskatchewan, Canada
| | - Amira Abdelrasoul
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon S7N 5A9, Saskatchewan, Canada; Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon S7N 5A9, Saskatchewan, Canada.
| | - Ahmed Shoker
- Nephrology Division, College of Medicine, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, SK S7N 5E5, Canada; Saskatchewan Transplant Program, St. Paul's Hospital, 1702 20th Street West Saskatoon Saskatchewan S7M 0Z9 Canada
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Chen H, Hu O, Fu H, Fan Y, Xu L, Meng Q, Zhang L, Lan W, Wu C, Tang S, She Y. Paper-based sensor for visual detection of Ag+ based on a “turn-off-on” fluorescent design. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104887] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Thukkaram M, Coryn R, Asadian M, Esbah Tabaei PS, Rigole P, Rajendhran N, Nikiforov A, Sukumaran J, Coenye T, Van Der Voort P, Du Laing G, Morent R, Van Tongel A, De Wilde L, De Baets P, Verbeken K, De Geyter N. Fabrication of Microporous Coatings on Titanium Implants with Improved Mechanical, Antibacterial, and Cell-Interactive Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:30155-30169. [PMID: 32530601 DOI: 10.1021/acsami.0c07234] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The success of an orthopedic implant therapy depends on successful bone integration and the prevention of microbial infections. In this work, plasma electrolytic oxidation (PEO) was performed to deposit TiO2 coatings enriched with Ca, P, and Ag on titanium to improve its surface properties and antibacterial efficacy while maintaining normal biological functions and thus to enhance the performance of orthopedic implants. After PEO treatment, the surface of Ti was converted to anatase and rutile TiO2, hydroxyapatite, and calcium titanate phases. The presence of these crystalline phases was further increased with an increased Ag content in the coatings. The developed coatings also exhibited a more porous morphology with an improved surface wettability, roughness, microhardness, and frictional coefficient. In vitro antibacterial assays indicated that the Ag-doped coatings can significantly prevent the growth of both Staphylococcus aureus and Escherichia coli by releasing Ag+ ions, and the ability to prevent these bacteria was enhanced by increasing the Ag content in the coatings, resulting in a maximal 6-log reduction of E. coli and a maximal 5-log reduction of S. aureus after 24 h of incubation. Moreover, the in vitro cytocompatibility evaluation of the coatings showed that the osteoblast (MC3T3) cell integration on the PEO-based coatings was greatly improved compared to untreated Ti and no notable impact on their cytocompatibility was observed on increasing the amount of Ag in the coating. In conclusion, the coating with favorable physicochemical and mechanical properties along with controlled silver ion release can offer an excellent antibacterial performance and osteocompatibility and can thus become a prospective coating strategy to face current challenges in orthopedics.
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Affiliation(s)
- Monica Thukkaram
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Renee Coryn
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Parinaz Saadat Esbah Tabaei
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Petra Rigole
- Laboratory of Pharmaceutical Microbiology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent 9000, Belgium
| | - Naveenkumar Rajendhran
- Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS), Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Jacob Sukumaran
- Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS), Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent 9000, Belgium
| | - Pascal Van Der Voort
- Centre for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Faculty of Sciences, Ghent University, Ghent 9000, Belgium
| | - Gijs Du Laing
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Alexander Van Tongel
- Orthopedic Surgery and Traumatology, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, Ghent 9000, Belgium
| | - Lieven De Wilde
- Orthopedic Surgery and Traumatology, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, Ghent 9000, Belgium
| | - Patrick De Baets
- Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMeCS), Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Kim Verbeken
- Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Ghent 9000, Belgium
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Insights into the binding mechanism of a model protein with fomesafen: Spectroscopic studies, thermodynamics and molecular modeling exploration. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.128] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Xiang L, Fang J, Cheng H. Toxicity of silver nanoparticles to green algae M. aeruginosa and alleviation by organic matter. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:667. [PMID: 30349996 DOI: 10.1007/s10661-018-7022-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 10/02/2018] [Indexed: 06/08/2023]
Abstract
Silver nanoparticles (AgNPs) have been increasingly used in a wide range of consumer products over the last decade. The release of AgNPs into aquatic ecosystems raises concerns about their safety and environmental toxicity, which have been the subject of recent studies. Herein, we assess the toxicity of AgNPs to the common algae Microcystis. aeruginosa. A toxicological response by M. aeruginosa was exhibited at an early stage of exposure to AgNPs, which were also toxic to its growth, photosynthetic, and membrane systems. The attachment of AgNPs to microalgae is likely the main mechanism by which it damages cell membranes. Dissolved Ag ions, originating from internalized AgNPs, seem to directly target the photosynthetic system. We also found that several humus-related indicators of water quality (HIX and β/α) were related to reduced AgNPs toxicity. Graphical abstract.
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Affiliation(s)
- Li Xiang
- School of Resource and Environment Engineering, Anhui University, Hefei, 230601, People's Republic of China
- Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, People's Republic of China
| | - Juan Fang
- Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, People's Republic of China
| | - Hua Cheng
- School of Resource and Environment Engineering, Anhui University, Hefei, 230601, People's Republic of China.
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13
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Zhai Y, Deng P, Wang X, Zhang C, Gan R, Gan N, Sun Q, Li H. Interaction mechanism of olaparib binding to human serum albumin investigated with NMR relaxation data and computational methods. RSC Adv 2018; 8:31555-31563. [PMID: 35548207 PMCID: PMC9085917 DOI: 10.1039/c8ra05330h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/02/2018] [Indexed: 11/21/2022] Open
Abstract
The interaction mechanism between olaparib (OLA) and human serum albumin (HSA) has been investigated using experimental and computational techniques. An NMR relaxation approach based on the analysis of proton selective and non-selective spin-lattice relaxation rates at different temperatures can provide quantitative information about the affinity index and the thermodynamic equilibrium constant of the OLA-HSA system. The affinity index and the thermodynamic equilibrium constant decreased as temperature increased, indicating that the interactions between OLA and HSA could be weakened as temperature increased. Molecular docking and dynamics simulations revealed that OLA stably bound to subdomain II (site 1), and OLA could induce the conformational and micro-environmental changes in HSA. CD results suggested that α-helix content decreased after OLA was added, demonstrating that OLA affected the secondary structure of HSA.
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Affiliation(s)
- Yuanming Zhai
- Analytical & Testing Center, Sichuan University Chengdu 610064 China
| | - Pengchi Deng
- Analytical & Testing Center, Sichuan University Chengdu 610064 China
| | - Xiaoyan Wang
- Analytical & Testing Center, Sichuan University Chengdu 610064 China
| | - Chunchun Zhang
- Analytical & Testing Center, Sichuan University Chengdu 610064 China
| | - Ruixue Gan
- School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Na Gan
- School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Qiaomei Sun
- School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Hui Li
- School of Chemical Engineering, Sichuan University Chengdu 610065 China
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14
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Niaei N, Hasanzadeh M, Shadjou N. Molecular interaction of some cardiovascular drugs with human serum albumin at physiological-like conditions: A new approach. J Mol Recognit 2018; 31:e2715. [PMID: 29630759 DOI: 10.1002/jmr.2715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/26/2018] [Accepted: 03/07/2018] [Indexed: 11/09/2022]
Abstract
In the present study, the interaction of human serum albumin (HSA) with some cardiovascular drugs (CARs) under physiological conditions was investigated via the fluorescence spectroscopic and Fourier transform infrared spectroscopy. The CAR included Captopril, Timolol, Propranolol, Atenolol, and Amiodarone. Cardiovascular drugs can effectively quench the endogenous fluorescence of HSA by static quenching mechanism. The fluorescence quenching of HSA is mainly caused by complex formation of HSA with CAR. The binding reaction of CAR with HSA can be concluded that hydrophobic and electrostatic interactions are the main binding forces in the CAR-HSA system. The results showed that CAR strongly quenched the intrinsic fluorescence of HSA through a static quenching procedure, and nonradiation energy transfer happened within molecules. Fourier transform infrared spectroscopy absorption studies showed that the secondary structure was changed according to the interaction of HSA and CAR. The binding reaction of CAR with HSA can be concluded that hydrophobic and electrostatic interactions are the main binding forces in the CAR-HSA system. The results obtained herein will be of biological significance in pharmacology and clinical medicines.
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Affiliation(s)
- Navid Niaei
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, 51664, Iran
| | - Mohammad Hasanzadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, 51664, Iran
| | - Nasrin Shadjou
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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15
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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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16
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Wu D, Zhang S, Zhao Y, Ao N, Ramakrishna S, He L. The effects of motif net charge and amphiphilicity on the self-assembly of functionally designer RADA16-I peptides. ACTA ACUST UNITED AC 2018; 13:035011. [PMID: 29546848 DOI: 10.1088/1748-605x/aab2fd] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
RADA16-I (Ac-(RADA)4-CONH2) is a widely investigated self-assembling peptide (SAP) in the biomedical field. It can undergo ordered self-assembly to form stable secondary structures, thereby further forming a nanofiber hydrogel. The modification of RADA16-I with functional peptide motifs has become a popular research topic. Researchers aim to exhibit particular biomedical signaling, and subsequently, further expand its applications. However, only a few fundamental reports are available on the influences of the peptide motifs on self-assembly mechanisms of designer functional RADA16-I SAPs. In this study, we designed RGD-modified RADA16-I SAPs with a series of net charges and amphiphilicities. The assembly/reassembly of these functionally designer SAPs was thoroughly studied using Raman spectroscopy, CD spectroscopy, and AFM. The nanofiber morphology and the secondary structure largely depended on the balance between the hydrophobic effects versus like-charge repulsions of the motifs, which should be to the focus in order to achieve a tailored nanostructure. Our study would contribute insight into considerations for sophisticated design of SAPs for biomedical applications.
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Affiliation(s)
- Dongni Wu
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, People's Republic of China. MOE Joint International Research Laboratory of CNS Regeneration, Jinan University, Guangzhou 510632, People's Republic of China
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17
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Gunawan C, Marquis CP, Amal R, Sotiriou GA, Rice SA, Harry EJ. Widespread and Indiscriminate Nanosilver Use: Genuine Potential for Microbial Resistance. ACS NANO 2017; 11:3438-3445. [PMID: 28339182 DOI: 10.1021/acsnano.7b01166] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this era of increasing antibiotic resistance, the use of alternative antimicrobials such as silver has become more widespread. Superior antimicrobial activity has been provided through fabrication of silver nanoparticles or nanosilver (NAg), which imparts cytotoxic actions distinct from those of bulk silver. In the wake of the recent discoveries of bacterial resistance to NAg and its rising incorporation in medical and consumer goods such as wound dressings and dietary supplements, we argue that there is an urgent need to monitor the prevalence and spread of NAg microbial resistance. In this Perspective, we describe how the use of NAg in commercially available products facilitates prolonged microorganism exposure to bioavailable silver, which underpins the development of resistance. Furthermore, we advocate for a judicial approach toward NAg use in order to preserve its efficacy and to avoid environmental disruption.
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Affiliation(s)
- Cindy Gunawan
- The iThree Institute, University of Technology Sydney , Sydney, NSW 2007, Australia
| | | | | | - Georgios A Sotiriou
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet , 17177 Stockholm, Sweden
| | | | - Elizabeth J Harry
- The iThree Institute, University of Technology Sydney , Sydney, NSW 2007, Australia
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18
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Study of the Binding between Camptothecin Analogs and FTO by Spectroscopy and Molecular Docking. J Fluoresc 2017; 27:1467-1477. [DOI: 10.1007/s10895-017-2086-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 04/04/2017] [Indexed: 10/19/2022]
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19
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Uppuluri KB, Ayaz Ahmed KB, Jothi A, Veerappan A. Spectrofluorimetric and molecular docking investigation on the interaction of 6-azauridine, a pyrimidine nucleoside antimetabolite, with serum protein. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.02.102] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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20
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Wu Q, Zhang H, Sun T, Zhang B, Liu R. Probing the toxic mechanism of Ag⁺ with lysozyme. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:124-130. [PMID: 26125992 DOI: 10.1016/j.saa.2015.06.080] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 06/19/2015] [Accepted: 06/22/2015] [Indexed: 06/04/2023]
Abstract
Silver (Ag) is widely used in human activities, which provides possibilities to distribute in organisms and tissues, resulting in harmful effects on human health. In this work, lysozyme was chosen as the target molecule to study the mechanism of toxic interactions between Ag(+) and protein using fluorescence emission spectra, synchronous fluorescence spectra, UV-vis absorption spectra, circular dichroism (CD) spectra, isothermal titration calorimetry (ITC), and enzyme activity assay. The results of fluorescence emission and synchronous fluorescence showed that there were interactions between Ag(+) and lysozyme by eliminating the inner filter effect (IFE). Data from UV-vis spectra indicated that the frame structure of lysozyme became looser with Ag(+) existent, while the micro-environment of aromatic amino acid residues did not show any significant alteration. CD results suggested that the secondary structure of lysozyme presented a decrease in α-helix contents with the increasing amount of Ag(+). ITC results showed Ag(+) can spontaneously bind with lysozyme through hydrogen bonding and van der Waals forces with one binding site (Ka=1.93×10(6)). The lysozyme activity was inhibited by Ag(+) according to the enzyme activity assay, revealing that Ag(+) bound to lysozyme at the active site which resulted in inhibition of lysozyme activity. This work showed that Ag(+) can cause damages to the structure and function of lysozyme.
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Affiliation(s)
- Qianqian Wu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong Province, Shandong University, 27# Shanda South Road, Jinan 250100, PR China
| | - Hao Zhang
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong Province, Shandong University, 27# Shanda South Road, Jinan 250100, PR China
| | - Tao Sun
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong Province, Shandong University, 27# Shanda South Road, Jinan 250100, PR China
| | - Bin Zhang
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong Province, Shandong University, 27# Shanda South Road, Jinan 250100, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong Province, Shandong University, 27# Shanda South Road, Jinan 250100, PR China.
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21
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Concomitant Raman spectroscopy and dynamic light scattering for characterization of therapeutic proteins at high concentrations. Anal Biochem 2014; 472:7-20. [PMID: 25475399 DOI: 10.1016/j.ab.2014.11.016] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 11/19/2014] [Accepted: 11/20/2014] [Indexed: 11/21/2022]
Abstract
A Raman spectrometer and dynamic light scattering system were combined in a single platform (Raman-DLS) to provide concomitant higher order structural and hydrodynamic size data for therapeutic proteins at high concentration. As model therapeutic proteins, we studied human serum albumin (HSA) and intravenous immunoglobulin (IVIG). HSA concentration and temperature interval during heating did not affect the onset temperatures for conformation perturbation or aggregation. The impact of pH on thermal stability of HSA was tested at pHs 3, 5, and 8. Stability was the greatest at pH 8, but distinct unfolding and aggregation behaviors were observed at the different pHs. HSA structural transitions and aggregation kinetics were also studied in real time during isothermal incubations at pH 7. In a forced oxidation study, it was found that hydrogen peroxide (H2O2) treatment reduced the thermal stability of HSA. Finally, the structure and thermal stability of IVIG were studied, and a comprehensive characterization of heating-induced structural perturbations and aggregation was obtained. In conclusion, by providing comprehensive data on protein tertiary and secondary structures and hydrodynamic size during real-time heating or isothermal incubation experiments, the Raman-DLS system offers unique physical insights into the properties of high-concentration protein samples.
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22
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Zhang W, Xiong X, Wang F, Li L, Zhang Y, Xiao W, Liu Y. Investigation of nitroxoline-human serum albumin interactions by spectroscopic methods. Sci China Chem 2014. [DOI: 10.1007/s11426-014-5230-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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Zhu Y, Zhang R, Wang Y, Ma J, Li K, Li Z. Biophysical study on the interaction of an anesthetic, vecuronium bromide with human serum albumin using spectroscopic and calorimetric methods. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 140:381-9. [DOI: 10.1016/j.jphotobiol.2014.08.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Revised: 08/21/2014] [Accepted: 08/26/2014] [Indexed: 12/01/2022]
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24
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Li Y, Li Z, Gao Y, Gong A, Zhang Y, Hosmane NS, Shen Z, Wu A. "Red-to-blue" colorimetric detection of cysteine via anti-etching of silver nanoprisms. NANOSCALE 2014; 6:10631-10637. [PMID: 25083798 DOI: 10.1039/c4nr03309d] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The reported strategies for cysteine (Cys) colorimetric detection based on noble metal nanomaterials include triggering aggregation, etching or fluorescence quenching of nanomaterials by Cys. In this study, we propose a new strategy for Cys colorimetric detection, i.e. anti-etching of silver nanoprisms (AgNPRs). In the absence of Cys, iodide ions (I(-)) could etch the corners and edges of AgNPRs and induce the morphology transition from nanoprism to nanodisk, which results in color change of the AgNPR dispersion from blue to red. In its presence, however, Cys can prevent the AgNPRs from I(-) attack. In that case, the color of the AgNPR dispersion containing I(-) and Cys remains blue. The mechanism is confirmed by using UV-vis spectra, TEM, DLS, Raman spectra and XPS spectra. According to the sensing effect of the Cys detection system, the concentration of I(-) incubated with AgNPRs, incubation time of AgNPRs and I(-), and pH of AgNPR dispersions are optimized to 5.0 μM, 10 min, and pH 6.2, respectively. Under the optimized conditions, the proposed Cys detection system has excellent selectivity and high sensitivity. The limit of detection (LOD) of our Cys detection system is 25 nM by the naked eye, which is much better than the reported lowest LOD by eye-vision (100 nM), and 10 nM by UV-vis spectroscopy. The results of Cys detection in rabbit urine or plasma samples reinforce that our Cys detection system is applicable for rapid colorimetric detection of Cys in real body fluid samples.
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Affiliation(s)
- Yonglong Li
- Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nano Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China.
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25
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Interactive association of drugs binding to human serum albumin. Int J Mol Sci 2014; 15:3580-95. [PMID: 24583848 PMCID: PMC3975355 DOI: 10.3390/ijms15033580] [Citation(s) in RCA: 234] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 02/17/2014] [Accepted: 02/18/2014] [Indexed: 02/06/2023] Open
Abstract
Human serum albumin (HSA) is an abundant plasma protein, which attracts great interest in the pharmaceutical industry since it can bind a remarkable variety of drugs impacting their delivery and efficacy and ultimately altering the drug’s pharmacokinetic and pharmacodynamic properties. Additionally, HSA is widely used in clinical settings as a drug delivery system due to its potential for improving targeting while decreasing the side effects of drugs. It is thus of great importance from the viewpoint of pharmaceutical sciences to clarify the structure, function, and properties of HSA–drug complexes. This review will succinctly outline the properties of binding site of drugs in IIA subdomain within the structure of HSA. We will also give an overview on the binding characterization of interactive association of drugs to human serum albumin that may potentially lead to significant clinical applications.
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27
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Wu J, Wei R, Wang H, Li T, Ren W. Underlying the mechanism of vancomycin and human serum albumin interaction: a biophysical study. J Biochem Mol Toxicol 2013; 27:463-70. [PMID: 23922228 DOI: 10.1002/jbt.21511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 06/21/2013] [Accepted: 06/28/2013] [Indexed: 01/05/2023]
Abstract
In the present study, the binding mechanism of vancomycin with human serum albumin (HSA) was determined. Upon addition of vancomycin to HSA, the fluorescence emission was quenched and the binding constant of vancomycin with HSA was found to be 6.05 × 10(3) M(-1) at 295 K, which corresponds to -2.16 × 10(4) J·mol(-1) of free energy. The conformation of HSA was altered upon binding of vancomycin with a decrease in α helix and an increase in β sheets and random coils, suggesting partial unfolding of the secondary structure. Molecular docking experiments found that vancomycin binds strongly with HSA at the hydrophobic pocket through hydrogen bonding and van der Waals interactions. An average binding distance of 4.71 nm has been determined on the basis of the Förster resonance energy theory. It was demonstrated that vancomycin binding to HSA causes protein structural changes.
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Affiliation(s)
- Junlong Wu
- Central Laboratory, Luoyang Central Hospital Affiliated to Zhengzhou University, He'nan, Luoyang, 471009, People's Republic of China
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28
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Binding of transition metal ions to albumin: sites, affinities and rates. Biochim Biophys Acta Gen Subj 2013; 1830:5444-55. [PMID: 23811338 DOI: 10.1016/j.bbagen.2013.06.018] [Citation(s) in RCA: 303] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 06/14/2013] [Accepted: 06/17/2013] [Indexed: 01/13/2023]
Abstract
BACKGROUND Serum albumin is the most abundant protein in the blood and cerebrospinal fluid and plays a fundamental role in the distribution of essential transition metal ions in the human body. Human serum albumin (HSA) is an important physiological transporter of the essential metal ions Cu(2+), and Zn(2+) in the bloodstream. Its binding of metals like Ni(2+), Co(2+), or Cd(2+) can occur in vivo, but is only of toxicological relevance. Moreover, HSA is one of the main targets and hence most studied binding protein for metallodrugs based on complexes with Au, Pt and V. SCOPE OF REVIEW We discuss i) the four metal-binding sites so far described on HSA, their localization and metal preference, ii) the binding of the metal ions mentioned above, i.e. their stability constants and association/dissociation rates, their coordination chemistry and their selectivity versus the four binding sites iii) the methodology applied to study issues of items i and ii and iv) oligopeptide models of the N-terminal binding site. MAJOR CONCLUSIONS Albumin has four partially selective metal binding sites with well-defined metal preferences. It is an important regulator of the blood transport of physiological Cu(II) and Zn(II) and toxic Ni(II) and Cd(II). It is also an important target for metal-based drugs containing Pt(II), V(IV)O, and Au(I). GENERAL SIGNIFICANCE The thorough understanding of metal binding properties of serum albumin, including the competition of various metal ions for specific binding sites is important for biomedical issues, such as new disease markers and design of metal-based drugs. This article is part of a Special Issue entitled Serum Albumin.
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29
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Tharmaraj V, Pitchumani K. d-Glucose sensing by (E)-(4-((pyren-1-ylmethylene)amino)phenyl) boronic acid via a photoinduced electron transfer (PET) mechanism. RSC Adv 2013. [DOI: 10.1039/c3ra40544c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Liu J, Wang Z, Liu FD, Kane AB, Hurt RH. Chemical transformations of nanosilver in biological environments. ACS NANO 2012; 6:9887-99. [PMID: 23046098 PMCID: PMC3508364 DOI: 10.1021/nn303449n] [Citation(s) in RCA: 200] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The widespread use of silver nanoparticles (Ag-NPs) in consumer and medical products provides strong motivation for a careful assessment of their environmental and human health risks. Recent studies have shown that Ag-NPs released to the natural environment undergo profound chemical transformations that can affect silver bioavailability, toxicity, and risk. Less is known about Ag-NP chemical transformations in biological systems, though the medical literature clearly reports that chronic silver ingestion produces argyrial deposits consisting of silver-, sulfur-, and selenium-containing particulate phases. Here we show that Ag-NPs undergo a rich set of biochemical transformations, including accelerated oxidative dissolution in gastric acid, thiol binding and exchange, photoreduction of thiol- or protein-bound silver to secondary zerovalent Ag-NPs, and rapid reactions between silver surfaces and reduced selenium species. Selenide is also observed to rapidly exchange with sulfide in preformed Ag(2)S solid phases. The combined results allow us to propose a conceptual model for Ag-NP transformation pathways in the human body. In this model, argyrial silver deposits are not translocated engineered Ag-NPs, but rather secondary particles formed by partial dissolution in the GI tract followed by ion uptake, systemic circulation as organo-Ag complexes, and immobilization as zerovalent Ag-NPs by photoreduction in light-affected skin regions. The secondary Ag-NPs then undergo detoxifying transformations into sulfides and further into selenides or Se/S mixed phases through exchange reactions. The formation of secondary particles in biological environments implies that Ag-NPs are not only a product of industrial nanotechnology but also have long been present in the human body following exposure to more traditional chemical forms of silver.
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Affiliation(s)
- Jingyu Liu
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Zhongying Wang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Frances D. Liu
- School of Engineering, Brown University, Providence, Rhode Island 02912
| | - Agnes B. Kane
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island 02912
- Institute for Molecular and Nanoscale Innovation, Brown University, Providence, Rhode Island 02912
| | - Robert H. Hurt
- School of Engineering, Brown University, Providence, Rhode Island 02912
- Institute for Molecular and Nanoscale Innovation, Brown University, Providence, Rhode Island 02912
- Address correspondence to
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31
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Roy M, Mukherjee P, Mandal BP, Sharma RK, Tyagi AK, Kale SP. Biomimetic synthesis of nanocrystalline silver sol using cysteine: stability aspects and antibacterial activities. RSC Adv 2012. [DOI: 10.1039/c2ra00785a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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32
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Human serum albumin: from bench to bedside. Mol Aspects Med 2011; 33:209-90. [PMID: 22230555 DOI: 10.1016/j.mam.2011.12.002] [Citation(s) in RCA: 1176] [Impact Index Per Article: 90.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Accepted: 12/21/2011] [Indexed: 02/07/2023]
Abstract
Human serum albumin (HSA), the most abundant protein in plasma, is a monomeric multi-domain macromolecule, representing the main determinant of plasma oncotic pressure and the main modulator of fluid distribution between body compartments. HSA displays an extraordinary ligand binding capacity, providing a depot and carrier for many endogenous and exogenous compounds. Indeed, HSA represents the main carrier for fatty acids, 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 (pseudo-)enzymatic properties. HSA is a valuable biomarker of many diseases, including cancer, rheumatoid arthritis, ischemia, post-menopausal obesity, severe acute graft-versus-host disease, and diseases that need monitoring of the glycemic control. Moreover, HSA is widely used clinically to treat several diseases, including hypovolemia, shock, burns, surgical blood loss, trauma, hemorrhage, cardiopulmonary bypass, acute respiratory distress syndrome, hemodialysis, acute liver failure, chronic liver disease, nutrition support, resuscitation, and hypoalbuminemia. Recently, biotechnological applications of HSA, including implantable biomaterials, surgical adhesives and sealants, biochromatography, ligand trapping, and fusion proteins, have been reported. Here, genetic, biochemical, biomedical, and biotechnological aspects of HSA are reviewed.
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Ge F, Jiang L, Liu D, Chen C. Interaction between alizarin and human serum albumin by fluorescence spectroscopy. ANAL SCI 2011; 27:79-84. [PMID: 21233565 DOI: 10.2116/analsci.27.79] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The binding properties on alizarin to human serum albumin (HSA) have been studied for the first time using fluorescence spectroscopy in combination with UV-visible absorbance spectroscopy. The results showed that alizarin strongly quenched the intrinsic fluorescence of HSA through a static quenching procedure, and non-radiation energy transfer occurred within the molecules. The number of binding sites was 1, and the efficiency of Förster energy transfer provided a distance of 1.83 nm between tryptophan and alizarin binding site. ΔH(θ), ΔS(θ) and ΔG(θ) were obtained based on the quenching constants and thermodynamic theory (ΔH(θ) < 0, ΔS(θ) > 0 and ΔG(θ) < 0). These results indicated that hydrophobic and electrostatic interactions are the main binding forces in the alizarin-HSA system. In addition, the results obtained from synchronous fluorescence spectra and three-dimensional fluorescence spectra showed that the binding of alizarin with HSA could induce conformational changes in HSA.
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Affiliation(s)
- Feng Ge
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650224, P. R. China.
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Vahedian-Movahed H, Saberi MR, Chamani J. Comparison of Binding Interactions of Lomefloxacin to Serum Albumin and Serum Transferrin by Resonance Light Scattering and Fluorescence Quenching Methods. J Biomol Struct Dyn 2011; 28:483-502. [DOI: 10.1080/07391102.2011.10508590] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Shang Y, Li H. Studies of the interaction between apigenin and bovine serum albumin by spectroscopic methods. RUSS J GEN CHEM+ 2010. [DOI: 10.1134/s1070363210080232] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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36
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Determinations of uranium(VI) binding properties with some metalloproteins (transferrin, albumin, metallothionein and ferritin) by fluorescence quenching. J Fluoresc 2010; 20:581-90. [PMID: 20066480 DOI: 10.1007/s10895-009-0587-3] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2009] [Accepted: 12/22/2009] [Indexed: 10/20/2022]
Abstract
The interactions between uranium and four metalloproteins (Apo-HTf, HSA, MT and Apo-EqSF) were investigated using fluorescence quenching measurements. The combined use of a microplate spectrofluorometer and logarithmic additions of uranium into protein solutions allowed us to define the fluorescence quenching over a wide range of [U]/[Pi] ratios (from 0.05 to 1150) at physiologically relevant conditions of pH. Results showed that fluorescence from the four metalloproteins was quenched by UO(2)(2+). Stoichiometry reactions, fluorescence quenching mechanisms and complexing properties of metalloproteins, i.e. binding constants and binding sites densities, were determined using classic fluorescence quenching methods and curve-fitting software (PROSECE). It was demonstrated that in our test conditions, the metalloprotein complexation by uranium could be simulated by two specific sites (L(1) and L(2)). Results showed that the U(VI)-Apo-HTf complexation constant values (log K(1)=7.7, log K(2)=4.6) were slightly higher than those observed for U(VI)-HSA complex (log K(1)=6.1, log K(2)=4.8), U(VI)-MT complex (log K(1)=6.5, log K(2)=5.6) and U(VI)-Apo-EqsF complex (log K(1)=5.3, log K(2)=3.9). PROSECE fitting studies also showed that the complexing capacities of each protein were different: 550 moles of U(VI) are complexed by Apo-EqSF while only 28, 10 and 5 moles of U(VI) are complexed by Apo-HTf, HSA and MT, respectively.
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Shang Y, Li H. Studies of the interaction between daidzein and 3′-daidzein sulfonic sodium with bovine serum albumin by spectroscopic methods. RUSS J GEN CHEM+ 2010. [DOI: 10.1134/s1070363210040298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Jiang H, Ding J, Chang P, Chen Z, Sun G. Determination of the Interaction of Arsenic and Human Serum Albumin by Online Microdialysis Coupled to LC with Hydride Generation Atomic Fluorescence Spectroscopy. Chromatographia 2010. [DOI: 10.1365/s10337-010-1573-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Xu H, Li X, Zhang J, Zhang Z, Liu K. Electrochemical Investigation of Calcium Dobesilate and Interactions with Bovine Serum Albumin on Gold Nanoparticle–Modified Glassy Carbon Electrode. ANAL LETT 2009. [DOI: 10.1080/00032710902890389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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40
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Zhang G, Wang A, Jiang T, Guo J. Interaction of the irisflorentin with bovine serum albumin: A fluorescence quenching study. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2008.03.002] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Zhang G, Que Q, Pan J, Guo J. Study of the interaction between icariin and human serum albumin by fluorescence spectroscopy. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.09.002] [Citation(s) in RCA: 256] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Heli H, Sattarahmady N, Jabbari A, Moosavi-Movahedi A, Hakimelahi G, Tsai FY. Adsorption of human serum albumin onto glassy carbon surface – Applied to albumin-modified electrode: Mode of protein–ligand interactions. J Electroanal Chem (Lausanne) 2007. [DOI: 10.1016/j.jelechem.2007.07.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Srinivas S, Kaul P, Prakash V. Mechanism of interaction of Pb(II) with milk proteins: a case study of alpha-casein. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:9283-9288. [PMID: 17924701 DOI: 10.1021/jf070911t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Alpha-casein is the major casein protein fraction from bovine milk and is responsible for binding to many ligands. This paper reports the results on the interaction of Pb(II) with alpha-casein. The interaction studies by spectroscopic titration indicate that Pb(II) has two binding sites with an association constant (ka) of (2.3 +/- 0.2) x 10 (5) M(-1). Raman spectra of the alpha-casein-Pb(II) complex show reduction in the amide I region as well as minor perturbations in the sulfhydryl region of alpha-casein. Stopped-flow studies show that the reaction mechanism of Pb(II) follows a pseudo-first-order reaction with a rate of 25 +/- 6 s(-1). The stopped-flow time-resolved spectra show peaks at 330 and 360 nm, correlating to Pb(II)-thiolate bands in the UV absorption spectra. Modification of cysteines present in alpha-casein does not result in binding of lead, indicating that cysteines could be one of the Pb(II) binding sites.
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Affiliation(s)
- S Srinivas
- Department of Protein Chemistry and Technology, Central Food Technological Research Institute, Mysore 570020, India
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Zhong K, Xia J, Wei W, Hu Y, Tao H, Liu W. A kinetic model and its parameter estimation for the process of binding copper to human serum albumin by a voltammetric method. Anal Bioanal Chem 2005; 381:1552-7. [PMID: 15782335 DOI: 10.1007/s00216-005-3104-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2004] [Revised: 01/02/2005] [Accepted: 01/13/2005] [Indexed: 11/25/2022]
Abstract
Linear sweep anodic stripping voltammetry was applied to determine the concentration of free copper ions in the process of binding copper to human serum albumin (HSA) on the mercaptoethane sulfonate modified gold electrode surface. A kinetic model of two consecutive steps for the process of binding copper to HSA was first proposed on the basis of the electrochemical results and compared with a parallel kinetic response model by using residual analysis. The experimental data of the stripping peak currents with time was fitted according to the model and the kinetic parameters, binding rate constants, k1 and k2, were estimated to be 0.411 and 0.055 min(-1), respectively.
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Affiliation(s)
- Kejun Zhong
- State Key Laboratory of Chem/Biosensing and Chemometrics College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
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