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Influence of Green Synthesized Zinc Oxide Nanoparticles on Molecular Interaction and Comparative Binding of Azure Dye with Chymotrypsin: Novel Nano-Conjugate for Cancer Phototherapy. Pharmaceutics 2022; 15:pharmaceutics15010074. [PMID: 36678703 PMCID: PMC9863556 DOI: 10.3390/pharmaceutics15010074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 12/29/2022] Open
Abstract
Till date, different types of conventional drugs have been used to fight tumors. However, they have significant flaws, including their usage being constrained because of their low bioavailability, poor supply, and serious side effects. The modern combination therapy has been viewed as a potent strategy for treating serious illnesses, including cancer-type feared diseases. The nanoparticles are a promising choice for cancer therapeutic and diagnostic applications because of their fascinating optoelectronic and physicochemical features. Among the metallic nanoparticles, Zinc oxide nanoparticles possess interesting physicochemical and anti-cancer characteristics, such as ROS generation, high retention, enhanced permeability etc., making them attractive candidates for the treatment and diagnosis of cancer. Zinc oxide nanoparticles showed anti-cancer property via excessive reactive oxygen species (ROS) production, and by the destruction of mitochondrial membrane. Here, we have synthesized organic/inorganic hybrid nanosystem composed of chymotrypsin protein (Chymo) with AzureC (AzC) conjugated with Zinc oxide nanoparticles (ZnONPs). The conjugation of AzureC with ZnONPs was confirmed by transmission electron microscopy (TEM), zeta potential, and dynamic light scattering (DLS) experiment. The interaction of Chymo with AzC alone and AzC-ZnONPs was investigated, and it was observed that the interaction was enhanced in the presence of ZnONPs, which was concluded by the results obtained from different spectroscopic techniques such as UV-Visible spectroscopy, fluorescence spectroscopy and circular dichroism in combination with molecular docking. UV-Visible spectroscopic studies and the corresponding binding parameters showed that the binding of AzC-ZnONPs complex with Chymo is much higher than that of AzC alone. Moreover, the fluorescence measurement showed enhancement in static quenching during titration of Chymo with AzC-ZnONPs as compared to dye alone. In addition to this, circular dichroism results show that the dye and dye-NPs conjugate do not cause much structural change in α-Chymo. The molecular docking and thermodynamic studies showed the predominance of hydrogen bonding, Van der Waal force, and hydrophobic forces during the interactions. After correlation of all the data, interaction of Chymo with AzC-ZnONPs complex showed strong interaction as compared to dye alone. The moderate binding with chymo without any alteration in the structure makes it desirable for the distribution and pharmacokinetics. In addition, the in vitro cytotoxicity of the AzC-ZnONPs was demonstrated on A-549 adenocarcinoma cell line. Our findings from physiochemical investigations suggested that the chymotrypsin coated AzC conjugated ZnONPs could be used as the novel nanoconjugates for various cancer phototherapies.
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Investigating binding dynamics of trans resveratrol to HSA for an efficient displacement of aflatoxin B1 using spectroscopy and molecular simulation. Sci Rep 2022; 12:2400. [PMID: 35165338 PMCID: PMC8844415 DOI: 10.1038/s41598-022-06375-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/19/2022] [Indexed: 01/22/2023] Open
Abstract
Resveratrol is a polyphenol belonging to the class stilbenes. The active and stable form of resveratrol is trans-resveratrol. This polyphenol is bestowed with numerous biological properties. Aflatoxin B1 is a hepato-carcinogen and mutagen that is produced by Aspergillus species. In this study, the interaction of trans-resveratrol with HSA followed by competitive dislodging of AFB1 from HSA by trans-resveratrol has been investigated using spectroscopic studies. The UV-absorption studies revealed ground state complex formation between HSA and trans-resveratrol. Trans-resveratrol binds strongly to HSA with the binding constant of ~ 107 M−1 to a single binding site (n = 1.58), at 298.15 K. The Stern–Volmer quenching constant was calculated as 7.83 × 104 M−1 at 298.15 K, suggesting strong fluorescence quenching ability of trans-resveratrol. Site markers displacement assay projected subdomain IIA as the binding site of trans-resveratrol to HSA. The molecular docking approach envisages the amino acid residues involved in the formation of the binding pocket. As confirmed from the site marker displacement assays, both trans-resveratrol and AFB1 binds to HSA in the same binding site, subdomain IIA. The study explores the ability of trans-resveratrol to displace AFB1 from the HSA-AFB1 complex, thereby affecting the toxicokinetic behavior of AFB1 associated with AFB1 exposure.
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Schmidt M, Abdul Latif A, Prager A, Gläser R, Schulze A. Highly Efficient One-Step Protein Immobilization on Polymer Membranes Supported by Response Surface Methodology. Front Chem 2022; 9:804698. [PMID: 35118049 PMCID: PMC8804297 DOI: 10.3389/fchem.2021.804698] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/20/2021] [Indexed: 12/26/2022] Open
Abstract
Immobilization of proteins by covalent coupling to polymeric materials offers numerous excellent advantages for various applications, however, it is usually limited by coupling strategies, which are often too expensive or complex. In this study, an electron-beam-based process for covalent coupling of the model protein bovine serum albumin (BSA) onto polyvinylidene fluoride (PVDF) flat sheet membranes was investigated. Immobilization can be performed in a clean, fast, and continuous mode of operation without any additional chemicals involved. Using the Design of Experiments (DoE) approach, nine process factors were investigated for their influence on graft yield and homogeneity. The parameters could be reduced to only four highly significant factors: BSA concentration, impregnation method, impregnation time, and electron beam irradiation dose. Subsequently, optimization of the process was performed using the Response Surface Methodology (RSM). A one-step method was developed, resulting in a high BSA grafting yield of 955 mg m−2 and a relative standard deviation of 3.6%. High efficiency was demonstrated by reusing the impregnation solution five times consecutively without reducing the final BSA grafting yield. Comprehensive characterization was conducted by X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), and measurements of zeta potential, contact angle and surface free energy, as well as filtration performance. In addition, mechanical properties and morphology were examined using mercury porosimetry, tensile testing, and scanning electron microscopy (SEM).
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Affiliation(s)
- Martin Schmidt
- Leibniz Institute of Surface Engineering (IOM), Leipzig, Germany
| | | | - Andrea Prager
- Leibniz Institute of Surface Engineering (IOM), Leipzig, Germany
| | - Roger Gläser
- Institute of Chemical Technology, Leipzig University, Leipzig, Germany
| | - Agnes Schulze
- Leibniz Institute of Surface Engineering (IOM), Leipzig, Germany
- *Correspondence: Agnes Schulze,
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Probing multifunctional azure B conjugated gold nanoparticles with serum protein binding properties for trimodal photothermal, photodynamic, and chemo therapy: Biophysical and photophysical investigations. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 134:112678. [DOI: 10.1016/j.msec.2022.112678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 01/13/2022] [Accepted: 01/19/2022] [Indexed: 11/23/2022]
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5
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Kostjukova LO, Leontieva SV, Kostjukov VV. Vibronic absorption spectrum and electronic properties of azure C in aqueous solution: TD-DFT study. Theor Chem Acc 2021. [DOI: 10.1007/s00214-021-02808-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Cui Y. Binding of levobupivacaine-loaded gold nanoparticles to human serum albumin: a simulated physiological study. LUMINESCENCE 2020; 35:1269-1276. [PMID: 32608125 DOI: 10.1002/bio.3888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 05/18/2020] [Accepted: 05/24/2020] [Indexed: 11/11/2022]
Abstract
Techniques such as Fourier transform infrared (FTIR), ultraviolet-visible (UV-vis) spectra, fluorescence, circular dichroism (CD) and spectroscopy were applied to elucidate the formation, structure and physicochemical properties of levobupivacaine-gold nanoparticle (LGN) binding to human serum albumin (HSA). Thermodynamic parameters (ΔG = -2.58 × 104 J·mol-1 , ΔS = -7.80 J·mol-1 ·K-1 , and ΔS = -2.82 × 104 J·mol-1 at 305 K) suggested one weak binding site on HSA, which was governed by van der Waals forces as well as hydrogen bonds. Moreover, the outcomes of UV-vis, CD, FTIR, synchronous and three-dimensional fluorescence suggested that the microenvironment of HSA had been changed with addition of LGN. Based on the results of fluorescence resonance energy transfer, a distance of 2.8 nm between the LGN and HSA was observed. This approach has potential value for illustrating the pharmacodynamics of LGN when in combination with transmembrane transport, biomolecular function effect, and other experiments.
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Affiliation(s)
- Yanhong Cui
- Department of Pain Treatment, Zibo Municipal Hospital, China
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A Thermolabile Phospholipase B from Talaromyces marneffei GD-0079: Biochemical Characterization and Structure Dynamics Study. Biomolecules 2020; 10:biom10020231. [PMID: 32033124 PMCID: PMC7072546 DOI: 10.3390/biom10020231] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/20/2020] [Accepted: 01/28/2020] [Indexed: 12/01/2022] Open
Abstract
Phospholipase B (EC 3.1.1.5) are a distinctive group of enzymes that catalyzes the hydrolysis of fatty acids esterified at the sn-1 and sn-2 positions forming free fatty acids and lysophospholipids. The structural information and catalytic mechanism of phospholipase B are still not clear. Herein, we reported a putative phospholipase B (TmPLB1) from Talaromyces marneffei GD-0079 synthesized by genome mining library. The gene (TmPlb1) was expressed and the TmPLB1 was purified using E. coli shuffle T7 expression system. The putative TmPLB1 was purified by affinity chromatography with a yield of 13.5%. The TmPLB1 showed optimum activity at 35 °C and pH 7.0. The TmPLB1 showed enzymatic activity using Lecithin (soybean > 98% pure), and the hydrolysis of TmPLB1 by 31P NMR showed phosphatidylcholine (PC) as a major phospholipid along with lyso-phospholipids (1-LPC and 2-LPC) and some minor phospholipids. The molecular modeling studies indicate that its active site pocket contains Ser125, Asp183 and His215 as the catalytic triad. The structure dynamics and simulations results explained the conformational changes associated with different environmental conditions. This is the first report on biochemical characterization and structure dynamics of TmPLB1 enzyme. The present study could be helpful to utilize TmPLB1 in food industry for the determination of food components containing phosphorus. Additionally, such enzyme could also be useful in Industry for the modifications of phospholipids.
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Anand K, Rajamanikandan R, Selva Sharma A, Ilanchelian M, Khan FI, Tiloke C, Katari NK, Boomi P, Balakumar C, Saravanan M, Palanisamy S, Ramesh M, Lai D, Chuturgoon A. Human serum albumin interaction, in silico and anticancer evaluation of Pine-Gold nanoparticles. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.09.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Jana GC, Nayim S, Sahoo NK, Das S, Aktara MN, Patra A, Islam MM, Hossain M. Deciphering the positional impact of chlorine in a new series of berberine analogues towards the superb-selective “turn-on” hydrophobic signaling of bovine serum albumin at physiological pH. NEW J CHEM 2020. [DOI: 10.1039/c9nj05642d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report a new 9-O-benzyl substituted berberine analogue for the selective detection of BSA with a limit of detection value of 3.30 nM.
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Affiliation(s)
- Gopal Chandra Jana
- Department of Chemistry and Chemical Technology
- Vidyasagar University
- Midnapore
- India
| | - Sk Nayim
- Department of Chemistry and Chemical Technology
- Vidyasagar University
- Midnapore
- India
| | - Nandan Kumar Sahoo
- Department of Chemistry and Chemical Technology
- Vidyasagar University
- Midnapore
- India
| | - Somnath Das
- Department of Chemistry and Chemical Technology
- Vidyasagar University
- Midnapore
- India
| | - Mt Nasima Aktara
- Department of Chemistry and Chemical Technology
- Vidyasagar University
- Midnapore
- India
| | - Anirudha Patra
- Department of Chemistry and Chemical Technology
- Vidyasagar University
- Midnapore
- India
| | | | - Maidul Hossain
- Department of Chemistry and Chemical Technology
- Vidyasagar University
- Midnapore
- India
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Ye Q, Guo L, Wu D, Yang B, Tao Y, Deng L, Kong Y. Covalent Functionalization of Bovine Serum Albumin with Graphene Quantum Dots for Stereospecific Molecular Recognition. Anal Chem 2019; 91:11864-11871. [PMID: 31415149 DOI: 10.1021/acs.analchem.9b02605] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Stereospecific molecular recognition with simple and easily available proteins is of significant importance in life science and biomaterial science. Herein, we report on a chiral sensing platform, graphene quantum dots (GQDs)-functionalized bovine serum albumin (BSA), for chiral recognition of tryptophan (Trp) isomers. Amidation reaction between BSA and GQDs was directly responsible for the introduction of GQDs to BSA, resulting in significant changes in the spatial configuration of BSA and the exposure of more chiral sites at the protein surface. The BSA-GQDs-based chiral sensor exhibited good biomolecular homochirality in the recognition of Trp isomers, and the higher affinity of BSA-GQDs toward l-Trp than its isomer, d-Trp, was also revealed by density functional theory (DFT) considering the possible hydrogen bonds between the Trp isomers and the solvent-accessible residues of BSA.
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Affiliation(s)
- Qiumin Ye
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology , Changzhou University , Changzhou 213164 , China
| | - Lili Guo
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology , Changzhou University , Changzhou 213164 , China
| | - Datong Wu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology , Changzhou University , Changzhou 213164 , China
| | - Baozhu Yang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology , Changzhou University , Changzhou 213164 , China
| | - Yongxin Tao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology , Changzhou University , Changzhou 213164 , China
| | - Linhong Deng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology , Changzhou University , Changzhou 213164 , China
| | - Yong Kong
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology , Changzhou University , Changzhou 213164 , China
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Zheng T, Yuan D, Liu C. Molecular toxicity of nanoplastics involving in oxidative stress and desoxyribonucleic acid damage. J Mol Recognit 2019; 32:e2804. [PMID: 31373076 DOI: 10.1002/jmr.2804] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/12/2019] [Accepted: 06/17/2019] [Indexed: 12/13/2022]
Abstract
Microplastic pollution attracted extensive attention because of its global presence and adverse effects on ecosystem. However, it is insufficient to clear the effects of nanoplastics on organisms at the molecular level. Herein, a nanopolystyrene (50 nm) was used to examine molecular responses of superoxide dismutase (SOD) and desoxyribonucleic acid (DNA) using spectroscopy (UV-vis, circular dichroism spectra, and fluorescence measurements) and single cell gel electrophoresis methods. Results showed that nanopolystyrene induced oxidative stress, involving in the increase of SOD activity and malondialdehide (MDA) content, and DNA damage because of the significant increase of olive tail moment, head optical density, and tail DNA percentage in the groups at exposure concentrations above 5 × 10-6 mol/L. The second structural and microenvironment of aromatic amino acids of SOD were changed with nanopolystyrene exposure. The fluorescence of SOD was quenched by nanopolystyrene at exposure concentration above 1 × 10-5 mol/L, and the quenching mode could be ascribed to the static type. The results and the combined methods are favorable to explore the molecular toxicity of other nanoplastics and the interaction mechanism.
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Affiliation(s)
- Tongtong Zheng
- School of Environmental Science and Engineering, Shandong Key Laboratory of Water Pollution Control and Resource Reuse,, China-America CRC for Environment and Health of Shandong Province, Shandong University, Qingdao, China
| | - Dong Yuan
- Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou, China
| | - Chunguang Liu
- School of Environmental Science and Engineering, Shandong Key Laboratory of Water Pollution Control and Resource Reuse,, China-America CRC for Environment and Health of Shandong Province, Shandong University, Qingdao, China.,Guangdong Provincial Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
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12
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Maji A, Beg M, Das S, Chandra Jana G, Jha PK, Islam MM, Hossain M. Spectroscopic study on interaction of Nymphaea nouchali leaf extract mediated bactericidal gold nanoparticles with human serum albumin. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.055] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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13
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Siddiqui N, Masum AA, Uddin MR, Mandal S, Sengupta M, Islam MM, Mukhopadhyay S. Elucidating the chemical and biochemical applications of Citrus sinensis-mediated silver nanocrystal. J Biomol Struct Dyn 2019; 37:4863-4874. [PMID: 30582437 DOI: 10.1080/07391102.2018.1559763] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Synthesis of nanoparticles using biodegradable source is safer and echo-friendly. Here, we describe the synthesis of polycrystalline silver nanocrystals using Citrus sinensis acting as both reducing and capping agents. After exposing the silver ions to orange extract, rapid reduction of silver ions led to the formation of stable silver nanocrystals due to the reducing and stabilizing properties of orange fruit juice. The synthesized silver nanocrystals were characterized using various analytical techniques like UV-vis spectroscopy, X-ray diffraction (XRD), dynamic light scattering (DLS), scanning electron microscope (SEM) and transmission electron microscopy (TEM). The biochemical activity of the synthesized nanocrystals was studied in the light of affinity to bovine serum albumin using several biophysical methods like absorbance, fluorescence and circular dichroism spectroscopy. Cytotoxic activity of these nanocrystals was also studied against Hep-2 cell line using fluorescence microscopy. It was also found that the synthesized nanocrystals can sense mercuric ion down to 50 µM in the presence of a number of cations. Furthermore, we established that the silver nanoparticles can effectively catalyse the reduction of methylene blue by ascorbic acid. The present study will enrich our knowledge on the chemical and biochemical activities of green-synthesized silver nanocrystals.
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Affiliation(s)
- Nurunnesa Siddiqui
- Department of Chemistry, Jadavpur University , Kolkata , West Bengal , India
| | - Abdulla Al Masum
- Nanobiotechnology Laboratory, Department of Life Science and Biotechnology, Jadavpur University , Kolkata , West Bengal , India
| | - Md Raihan Uddin
- Department of Microbiology, University of Calcutta , Kolkata , West Bengal , India
| | - Sukhendu Mandal
- Department of Microbiology, University of Calcutta , Kolkata , West Bengal , India
| | - Mohana Sengupta
- Department of Chemistry, Jadavpur University , Kolkata , West Bengal , India
| | - Md Maidul Islam
- Department of Chemistry, Aliah University , Kolkata , West Bengal , India
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14
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A complete multispectroscopic resolution on the fate of HSA upon interplay with three different glycosaminoglycans inspired silver nanoparticles and straightforward judgment of nanoparticles for recruitment as potent anticancer and antibacterial agent. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.10.090] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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15
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Hauser M, Qian C, King ST, Kauffman S, Naider F, Hettich RL, Becker JM. Identification of peptide-binding sites within BSA using rapid, laser-induced covalent cross-linking combined with high-performance mass spectrometry. J Mol Recognit 2017; 31. [PMID: 28994207 DOI: 10.1002/jmr.2680] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/31/2017] [Accepted: 09/17/2017] [Indexed: 11/07/2022]
Abstract
We are developing a rapid, time-resolved method using laser-activated cross-linking to capture protein-peptide interactions as a means to interrogate the interaction of serum proteins as delivery systems for peptides and other molecules. A model system was established to investigate the interactions between bovine serum albumin (BSA) and 2 peptides, the tridecapeptide budding-yeast mating pheromone (α-factor) and the decapeptide human gonadotropin-releasing hormone (GnRH). Cross-linking of α-factor, using a biotinylated, photoactivatable p-benzoyl-L-phenylalanine (Bpa)-modified analog, was energy-dependent and achieved within seconds of laser irradiation. Protein blotting with an avidin probe was used to detect biotinylated species in the BSA-peptide complex. The cross-linked complex was trypsinized and then interrogated with nano-LC-MS/MS to identify the peptide cross-links. Cross-linking was greatly facilitated by Bpa in the peptide, but some cross-linking occurred at higher laser powers and high concentrations of a non-Bpa-modified α-factor. This was supported by experiments using GnRH, a peptide with sequence homology to α-factor, which was likewise found to be cross-linked to BSA by laser irradiation. Analysis of peptides in the mass spectra showed that the binding site for both α-factor and GnRH was in the BSA pocket defined previously as the site for fatty acid binding. This model system validates the use of laser-activation to facilitate cross-linking of Bpa-containing molecules to proteins. The rapid cross-linking procedure and high performance of MS/MS to identify cross-links provides a method to interrogate protein-peptide interactions in a living cell in a time-resolved manner.
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Affiliation(s)
- Melinda Hauser
- Department of Microbiology, University of Tennessee, Knoxville, TN, USA
| | - Chen Qian
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- UT-ORNL Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, USA
| | - Steven T King
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- Department of Chemistry, University of Tennessee, Knoxville, TN, USA
| | - Sarah Kauffman
- Department of Microbiology, University of Tennessee, Knoxville, TN, USA
| | - Fred Naider
- Department of Chemistry and Macromolecular Assemblies Institute, College of Staten Island, CUNY, New York, NY, USA
- Programs in Biochemistry and Chemistry, Graduate Center, The City University of New York, New York, NY, USA
| | - Robert L Hettich
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- UT-ORNL Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, USA
| | - Jeffrey M Becker
- Department of Microbiology, University of Tennessee, Knoxville, TN, USA
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