1
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Jaklin M, Hritz J, Hribar-Lee B. A new fibrillization mechanism of β-lactoglobulin in glycine solutions. Int J Biol Macromol 2022; 216:414-425. [PMID: 35803407 PMCID: PMC10039397 DOI: 10.1016/j.ijbiomac.2022.06.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/15/2022] [Accepted: 06/27/2022] [Indexed: 11/26/2022]
Abstract
Even though amyloid aggregates were discovered many years ago the mechanism of their formation is still a mystery. Because of their connection to many of untreatable neurodegenerative diseases the motivation for finding a common aggregation path is high. We report a new high heat induced fibrillization path of a model protein β-lactoglobulin (BLG) when incubated in glycine instead of water at pH 2. By combining atomic force microscopy (AFM), transmission emission microscopy (TEM), dynamic light scattering (DLS) and circular dichroism (CD) we predict that the basic building blocks of fibrils made in glycine are not peptides, but rather spheroid oligomers of different height that form by stacking of ring-like structures. Spheroid oligomers linearly align to form fibrils by opening up and combining. We suspect that glycine acts as an hydrolysation inhibitor which consequently promotes a different fibrillization path. By combining the known data on fibrillization in water with our experimental conclusions we come up with a new fibrillization scheme for BLG. We show that by changing the fibrillization conditions just by small changes in buffer composition can dramatically change the aggregation pathway and the effect of buffer shouldn't be neglected. Fibrils seen in our study are also gaining more and more attention because of their pore-like structure and a possible cytotoxic mechanism by forming pernicious ion-channels. By preparing them in a simple model system as BLG we opened a new way to study their formation.
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Affiliation(s)
- Matej Jaklin
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, Ljubljana SI-1000, Slovenia
| | - Jozef Hritz
- CEITEC Masaryk University Kamenice 5, Brno 625 00, Czech Republic; Department of Chemistry, Faculty of Science, Masaryk University Kamenice 5, Brno 625 00, Czech Republic
| | - Barbara Hribar-Lee
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, Ljubljana SI-1000, Slovenia.
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2
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Goralski ST, Rose MJ. Emerging artificial metalloenzymes for asymmetric hydrogenation reactions. Curr Opin Chem Biol 2021; 66:102096. [PMID: 34879303 DOI: 10.1016/j.cbpa.2021.102096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/24/2021] [Accepted: 10/04/2021] [Indexed: 01/26/2023]
Abstract
Artificial metalloenzymes (ArMs) utilize the best properties of homogenous transition metal catalysts and naturally occurring proteins. While synthetic metal complexes offer high tunability and broad-scope reactivity with a variety of substrates, enzymes further endow these complexes with enhanced aqueous stability and stereoselectivity. For these reasons, dozens of ArMs have been designed to perform catalytic asymmetric hydrogenation reactions, and hydrogenase ArMs are, in fact, the oldest class of ArMs. Herein, we report recent advances in the design of hydrogenase ArMs, including (i) the modification of natural [Fe]-hydrogenase by insertion of artificial metallocofactors, (ii) design of a novel ArM system from the tractable and inexpensive protein β-lactoglobulin to afford a high-performing transfer hydrogenase, and (iii) the design of chimeric streptavidin scaffolds that drastically alter the secondary coordination sphere of previously reported streptavidin/biotin transfer hydrogenase ArMs.
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Affiliation(s)
- Sean T Goralski
- Department of Chemistry, University of Texas at Austin, 105 E. 24th St. Stop A5300, Austin, TX, 78712, USA
| | - Michael J Rose
- Department of Chemistry, University of Texas at Austin, 105 E. 24th St. Stop A5300, Austin, TX, 78712, USA.
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3
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Maity S, Sepay N, Pal S, Sardar S, Parvej H, Pal S, Chakraborty J, Pradhan A, Halder UC. Modulation of amyloid fibrillation of bovine β-lactoglobulin by selective methionine oxidation. RSC Adv 2021; 11:11192-11203. [PMID: 35423661 PMCID: PMC8695858 DOI: 10.1039/d0ra09060c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 03/05/2021] [Indexed: 12/13/2022] Open
Abstract
Deposition of oxidation-modified proteins during normal aging and oxidative stress are directly associated with systemic amyloidoses. Methionine (Met) is believed to be one of the most readily oxidisable amino acid residues of protein. Bovine beta-lactoglobulin (β-lg), a model globular whey protein, has been presented as a subsequent paradigm for studies on protein aggregation and amyloid formation. Herein, we investigated the effect of t-butyl hydroperoxide (tBHP)-induced oxidation on structure, compactness and fibrillation propensity of β-lg at physiological pH. Notably, whey protein modification, specifically Met residues, plays an important role in the dairy industry during milk processing and lowering nutritional value and ultimately affecting their technological properties. Several bio-physical studies revealed enhanced structural flexibility and aggregation propensity of oxidised β-lg in a temperature dependent manner. A molecular docking study is used to predict possible interactions with tBHP and infers selective oxidation of methionine residues at 7, 24 and 107 positions. From our studies, it can be corroborated that specific orientations of Met residues directs the formation of a partially unfolded state susceptible to fibrillation with possible different cytotoxic effects. Our studies have greater implications in deciphering the underlying mechanism of different whey proteins encountering oxidative stress. Our findings are also important to elucidate the understanding of oxidation induced amyloid fibrillation of protein which may constitute a new route to pave the way for a modulatory role of oxidatively stressed proteins in neurological disorders.
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Affiliation(s)
- Sanhita Maity
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Nayim Sepay
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Sampa Pal
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Subrata Sardar
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Hasan Parvej
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Swarnali Pal
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Jishnu Chakraborty
- Department of Chemistry, Camellia Institute of Engineering and Technology Budbud Burdwan WB India
| | - Anirban Pradhan
- Department of Chemistry, Ramakrishna Mission Residential College (Autonomous), Vivekananda Centre for Research Narendrapur Kolkata-700103 India
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4
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Zhang TD, Chen LL, Lin WJ, Shi WP, Wang JQ, Zhang CY, Guo WH, Deng X, Yin DC. Searching for conditions of protein self-assembly by protein crystallization screening method. Appl Microbiol Biotechnol 2021; 105:2759-2773. [PMID: 33683398 DOI: 10.1007/s00253-021-11188-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 01/29/2021] [Accepted: 02/17/2021] [Indexed: 11/28/2022]
Abstract
The self-assembly of biomacromolecules is an extremely important process. It is potentially useful in the fields of life science and materials science. To carry out the study on the self-assembly of proteins, it is necessary to find out the suitable self-assembly conditions, which have always been a challenging task in practice. Inspired by the screening technique in the field of protein crystallization, we proposed using the same screening technique for seeking suitable protein self-assembly conditions. Based on this consideration, we selected 5 proteins (β-lactoglobulin, hemoglobin, pepsin, lysozyme, α-chymotrypsinogen (II) A) together with 5 screening kits (IndexTM, BML, Morpheus, JCSG, PEG/Ion ScreenTM) to investigate the performance of these crystallization screening techniques in order to discover new optimized conditions of protein self-assembly. The screens were all kept at 293 K for certain days, and were analyzed using optical microscope, scanning electron microscope, transmission electron microscope, atomic force microscope, fluorescence microscope, and atomic absorption spectroscope. The results demonstrated that the method of protein crystallization screening can be successfully applied in the screening of self-assembly conditions. This method is fast, high throughput, and easily implemented in an automated system, with a low protein consumption feature. These results suggested that such strategy can be applied to finding new conditions or forms in routine research of protein self-assembly. KEY POINTS: • Protein crystallization screening method is successfully applied in the screening of self-assembly conditions. • This screening method can be applied on various kinds of proteins and possess a feature of low protein consumption. • This screening method is fast, high throughput, and easily implemented in an automated system.
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Affiliation(s)
- Tuo-Di Zhang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Liang-Liang Chen
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Wen-Juan Lin
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Wen-Pu Shi
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Jia-Qi Wang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Chen-Yan Zhang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
| | | | - Xudong Deng
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China.
| | - Da-Chuan Yin
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China.
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5
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Hecker L, Wang W, Mela I, Fathi S, Poudel C, Soavi G, Huang YYS, Kaminski CF. Guided Assembly and Patterning of Intrinsically Fluorescent Amyloid Fibers with Long-Range Order. NANO LETTERS 2021; 21:938-945. [PMID: 33448864 DOI: 10.1021/acs.nanolett.0c03672] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Fibrillar amyloids exhibit a fascinating range of mechanical, optical, and electronic properties originating from their characteristic β-sheet-rich structure. Harnessing these functionalities in practical applications has so far been hampered by a limited ability to control the amyloid self-assembly process at the macroscopic scale. Here, we use core-shell electrospinning with microconfinement to assemble amyloid-hybrid fibers, consisting of densely aggregated fibrillar amyloids stabilized by a polymer shell. Up to centimeter-long hybrid fibers with micrometer diameter can be arranged into aligned and ordered arrays and deposited onto substrates or produced as free-standing networks. Properties that are characteristic of amyloids, including their high elastic moduli and intrinsic fluorescence signature, are retained in the hybrid fiber cores, and we show that they fully persist through the macroscopic fiber patterns. Our findings suggest that microlevel confinement is key for the guided assembly of amyloids from monomeric proteins.
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Affiliation(s)
- Lisa Hecker
- Department for Chemical Engineering & Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Wenyu Wang
- Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom
| | - Ioanna Mela
- Department for Chemical Engineering & Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Saeed Fathi
- Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom
| | - Chetan Poudel
- Department for Chemical Engineering & Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Giancarlo Soavi
- Institute of Solid State Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Max-Wien Platz 1, 07743 Jena, Germany
| | - Yan Yan Shery Huang
- Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom
| | - Clemens F Kaminski
- Department for Chemical Engineering & Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
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6
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Sharma A, Ghosh KS. Studies on Molecular Interactions between Bovine β-Lactoglobulin and Silver Nanoparticles. Protein Pept Lett 2021; 27:793-800. [PMID: 32003652 DOI: 10.2174/0929866527666200129123018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/07/2019] [Accepted: 12/09/2019] [Indexed: 01/19/2023]
Abstract
BACKGROUND Silver Nanoparticles (AgNPs) were found to modulate the fibrillation of Bovine Β-Lactoglobulin (BLG). OBJECTIVE To gain an insight regarding the mechanism of BLG aggregation modulation by AgNPs at molecular level, studies on the interactions between BLG and AgNPs were carried out. METHODS Protein-ligand interactions were studied based on Trp fluorescence quenching (at four different temperatures), synchronous and three-dimensional fluorescence and circular dichroism spectroscopy (far-UV and near-UV). RESULTS Protein-nanoparticles association constant was in the range of 106 -1010 M-1 and the quenching constant was determined as ~107 M-1. Ground state complexation between the protein and nanoparticles was predicted. Change in polarity surrounding the Trp residue was not detected by synchronous and three-dimensional fluorescence spectroscopy. AgNPs caused a global change in the secondary and tertiary structure of the protein as revealed from far-UV and near-UV CD spectroscopy. Enthalpy driven complexation between the protein and nanoparticles indicates the involvement of hydrogen bonding and/or van der Waals interactions. CONCLUSION Modulation of BLG aggregation by AgNPs is due to strong binding of the nanoparticles with BLG, which also causes structural perturbations of the protein.
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Affiliation(s)
- Anchal Sharma
- Department of Chemistry, National Institute of Technology, Hamirpur, Himachal Pradesh 177005, India
| | - Kalyan Sundar Ghosh
- Department of Chemistry, National Institute of Technology, Hamirpur, Himachal Pradesh 177005, India
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7
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Preparation of a Hybrid Membrane from Whey Protein Fibrils and Activated Carbon to Remove Mercury and Chromium from Water. MEMBRANES 2020; 10:membranes10120386. [PMID: 33266234 PMCID: PMC7760280 DOI: 10.3390/membranes10120386] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/10/2020] [Accepted: 11/25/2020] [Indexed: 12/07/2022]
Abstract
Water contamination by mercury and chromium has a direct effect in human health. A promising technology to remove heavy metals by membrane filtration is the use of hybrid membranes produced with whey protein fibrils (WPF) and activated carbon (AC). In this study, the best conditions to produce WPF by heat treatment were determined to maximize the removal of mercury and chromium from water using a central composed design. The results indicated that the best conditions to prepare WPF were 74 °C, 7 h and 3.8% of whey protein with adsorption capacities of 25 and 18 mg/g and removal efficiencies of 81 and 57% for mercury and chromium, respectively. WPF and AC were used to prepare a hybrid membrane that was characterized using transmission electron microscopy, atomic force microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy and Brunauer-Emmett-Teller surface area measurements. Batch filtration experiments were performed with the hybrid membrane for chromium and mercury removal at 25, 50 and 100 mg/L to determine its adsorption capacities. A high performance of the hybrid membrane was demonstrated removing efficiently mercury and chromium from water, thus supporting more than ten filtration cycles.
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8
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Pal S, Maity S, Sardar S, Begum S, Dalui R, Parvej H, Bera K, Pradhan A, Sepay N, Paul S, Halder UC. Antioxidant ferulic acid prevents the aggregation of bovine β-lactoglobulin in vitro. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-01796-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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9
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Lambrecht MA, Jansens KJ, Rombouts I, Brijs K, Rousseau F, Schymkowitz J, Delcour JA. Conditions Governing Food Protein Amyloid Fibril Formation. Part II: Milk and Legume Proteins. Compr Rev Food Sci Food Saf 2019; 18:1277-1291. [DOI: 10.1111/1541-4337.12465] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/26/2019] [Accepted: 05/16/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Marlies A. Lambrecht
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe)KU Leuven Kasteelpark Arenberg 20 B‐3001 Leuven Belgium
| | - Koen J.A. Jansens
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe)KU Leuven Kasteelpark Arenberg 20 B‐3001 Leuven Belgium
| | - Ine Rombouts
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe)KU Leuven Kasteelpark Arenberg 20 B‐3001 Leuven Belgium
| | - Kristof Brijs
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe)KU Leuven Kasteelpark Arenberg 20 B‐3001 Leuven Belgium
| | - Frederic Rousseau
- Switch LaboratoryVIB B‐3000 Leuven Belgium
- Dept. of Cellular and Molecular MedicineKU Leuven B‐3000 Leuven Belgium
| | - Joost Schymkowitz
- Switch LaboratoryVIB B‐3000 Leuven Belgium
- Dept. of Cellular and Molecular MedicineKU Leuven B‐3000 Leuven Belgium
| | - Jan A. Delcour
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe)KU Leuven Kasteelpark Arenberg 20 B‐3001 Leuven Belgium
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10
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Sardar S, Anas M, Maity S, Pal S, Parvej H, Begum S, Dalui R, Sepay N, Halder UC. Silver nanoparticle modulates the aggregation of beta-lactoglobulin and induces to form rod-like aggregates. Int J Biol Macromol 2018; 125:596-604. [PMID: 30528992 DOI: 10.1016/j.ijbiomac.2018.12.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/23/2018] [Accepted: 12/02/2018] [Indexed: 02/07/2023]
Abstract
Silver nanoparticles (SNPs) have been increasingly used in medicines and biomaterials as a drug carriers and diagnostic or therapeutic material due to their smaller size, large surface area and cell penetration ability. Here we report the preparation of SNPs of diameter 10 ± 3 nm by using silver nitrate and sodium borohydride and the interaction of synthesized SNPs with our model protein β-lactoglobulin (β-lg) in 10 mM phosphate buffer at pH 7.5 after thermal exposure at 75 °C. Heat exposed β-lg forms amyloidal fibrillar aggregates whereas this protein aggregates adopt rod-like shape instead of fibrillar structure in presence of SNP under the same conditions. Size of the synthesized SNPs is confirmed by UV-Visible spectroscopy, SEM and TEM. Interactions and subsequent formation of molecular assembly of heat stressed β-lg with SNP were investigated using Th-T assay and ANS binding assay, DLS, RLS, CD, FT-IR, SEM, TEM. Docking study parallely also support the experimental findings.
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Affiliation(s)
- Subrata Sardar
- Organic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Md Anas
- Organic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Sanhita Maity
- Organic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Sampa Pal
- Organic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Hasan Parvej
- Organic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Shahnaz Begum
- Organic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Ramkrishna Dalui
- Organic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Nayim Sepay
- Organic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Umesh Chandra Halder
- Organic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
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11
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Bertolla M, Cenci L, Anesi A, Ambrosi E, Tagliaro F, Vanzetti L, Guella G, Bossi AM. Solvent-Responsive Molecularly Imprinted Nanogels for Targeted Protein Analysis in MALDI-TOF Mass Spectrometry. ACS APPLIED MATERIALS & INTERFACES 2017; 9:6908-6915. [PMID: 28151640 DOI: 10.1021/acsami.6b16291] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Molecular imprinted poly(acrylamido)-derivative nanogels have shown their selectivity to bind the protein human serum transferrin (HTR) and also showed their capability for instantaneous solvent-induced modification upon the addition of acetonitrile. Integrated to matrix-assisted laser desorption/ionization time-of-flight mass analysis the HTR-imprinted solvent-responsive nanogels permitted the determination of HTR straight from serum and offered novel perspectives in targeted protein analysis.
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Affiliation(s)
- Maddalena Bertolla
- Department of Physics, University of Trento , Via Sommarive 14, 38123 Trento, Italy
| | - Lucia Cenci
- Department of Biotechnology, University of Verona , Strada Le Grazie 15, 37134 Verona, Italy
| | - Andrea Anesi
- Department of Physics, University of Trento , Via Sommarive 14, 38123 Trento, Italy
| | - Emmanuele Ambrosi
- Department of Molecular Sciences and Nanosystems, University Cà Foscari Venezia , Via Torino 155/b, 30173 Venice, Italy
| | - Franco Tagliaro
- Department of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona , P.le L.A. Scuro 10, 37134 Verona, Italy
| | - Lia Vanzetti
- Fondazione Bruno Kessler CMM-MNF , Via Sommarive 18, 38123 Trento, Italy
| | - Graziano Guella
- Department of Physics, University of Trento , Via Sommarive 14, 38123 Trento, Italy
| | - Alessandra Maria Bossi
- Department of Biotechnology, University of Verona , Strada Le Grazie 15, 37134 Verona, Italy
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12
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Synthesis of selenium-containing Artemisia sphaerocephala polysaccharides: Solution conformation and anti-tumor activities in vitro. Carbohydr Polym 2016; 152:70-78. [DOI: 10.1016/j.carbpol.2016.06.090] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Revised: 06/21/2016] [Accepted: 06/22/2016] [Indexed: 01/04/2023]
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13
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Qi R, Jin Y, Cheng X, Li H, Lai S, Sun X. Water-Induced Transitions from Ellipsoidal Micelles to Chain-Like Nanostructures Self-Assembled by the Coil-Rod-Coil Block Copolymer Based on Hydrogen-Bonding Urea Groups. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rui Qi
- Center of Polymer Science and Technology; Chengdu Institute of Organic Chemistry; Chinese Academy of Science; Chengdu 610041 China
- University of Chinese Academy of Sciences; No.19A Yuquan Road Beijing 100049 China
| | - Yong Jin
- National Engineering Laboratory for Clean Technology of Leather Manufacture; Sichuan University; Chengdu 610065 China
- Key Laboratory of Leather Chemistry and Engineering (Sichuan University); Ministry of Education; Chengdu 610065 China
| | - Xinfeng Cheng
- Center of Polymer Science and Technology; Chengdu Institute of Organic Chemistry; Chinese Academy of Science; Chengdu 610041 China
- University of Chinese Academy of Sciences; No.19A Yuquan Road Beijing 100049 China
| | - Hanping Li
- National Engineering Laboratory for Clean Technology of Leather Manufacture; Sichuan University; Chengdu 610065 China
- Key Laboratory of Leather Chemistry and Engineering (Sichuan University); Ministry of Education; Chengdu 610065 China
| | - Shuangquan Lai
- National Engineering Laboratory for Clean Technology of Leather Manufacture; Sichuan University; Chengdu 610065 China
- Key Laboratory of Leather Chemistry and Engineering (Sichuan University); Ministry of Education; Chengdu 610065 China
| | - Xiaopeng Sun
- National Engineering Laboratory for Clean Technology of Leather Manufacture; Sichuan University; Chengdu 610065 China
- Key Laboratory of Leather Chemistry and Engineering (Sichuan University); Ministry of Education; Chengdu 610065 China
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14
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Pal S, Maity S, Sardar S, Parvej H, Das N, Chakraborty J, Chandra Halder U. Curcumin inhibits the Al(iii) and Zn(ii) induced amyloid fibrillation of β-lactoglobulin in vitro. RSC Adv 2016. [DOI: 10.1039/c6ra24570f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Accumulation of ordered protein aggregates (or amyloids) is responsible for several neurodegenerative diseases.
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Affiliation(s)
- Sampa Pal
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
| | - Sanhita Maity
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
| | - Subrata Sardar
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
| | - Hasan Parvej
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
| | - Niloy Das
- Department of Chemistry
- Durgapur Govt. College
- Durgapur
- India
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15
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Maity S, Sardar S, Pal S, Parvej H, Chakraborty J, Halder UC. New insight into the alcohol induced conformational change and aggregation of the alkaline unfolded state of bovine β-lactoglobulin. RSC Adv 2016. [DOI: 10.1039/c6ra12057a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here we report for first time the self-assembly of β-lg from its alkaline unfolded state.
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Affiliation(s)
- Sanhita Maity
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Subrata Sardar
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Sampa Pal
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Hasan Parvej
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Jishnu Chakraborty
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Umesh Ch. Halder
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
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