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Ural MS, Joseph JM, Wien F, Li X, Tran MA, Taverna M, Smadja C, Gref R. A comprehensive investigation of the interactions of human serum albumin with polymeric and hybrid nanoparticles. Drug Deliv Transl Res 2024; 14:2188-2202. [PMID: 38578378 DOI: 10.1007/s13346-024-01578-x] [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] [Accepted: 03/07/2024] [Indexed: 04/06/2024]
Abstract
Nanoparticles (NPs) engineered as drug delivery systems continue to make breakthroughs as they offer numerous advantages over free therapeutics. However, the poor understanding of the interplay between the NPs and biomolecules, especially blood proteins, obstructs NP translation to clinics. Nano-bio interactions determine the NPs' in vivo fate, efficacy and immunotoxicity, potentially altering protein function. To fulfill the growing need to investigate nano-bio interactions, this study provides a systematic understanding of two key aspects: (i) protein corona (PC) formation and (ii) NP-induced modifications on protein's structure and stability. A methodology was developed by combining orthogonal techniques to analyze both quantitative and qualitative aspects of nano-bio interactions, using human serum albumin (HSA) as a model protein. Protein quantification via liquid chromatography-mass spectrometry, and capillary zone electrophoresis (CZE) clarified adsorbed protein quantity and stability. CZE further unveiled qualitative insights into HSA forms (native, glycated HSA and cysteinylated), while synchrotron radiation circular dichroism enabled analyzing HSA's secondary structure and thermal stability. Comparative investigations of NP cores (organic vs. hybrid), and shells (with or without polyethylene glycol (PEG)) revealed pivotal factors influencing nano-bio interactions. Polymeric NPs based on poly(lactic-co-glycolic acid) (PLGA) and hybrid NPs based on metal-organic frameworks (nanoMOFs) presented distinct HSA adsorption profiles. PLGA NPs had protein-repelling properties while inducing structural modifications on HSA. In contrast, HSA exhibited a high affinity for nanoMOFs forming a PC altering thereby the protein structure. A shielding effect was gained through PEGylation for both types of NPs, avoiding the PC formation as well as the alteration of unbound HSA structure.
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Affiliation(s)
- Merve Seray Ural
- Université Paris-Saclay, Institute of Molecular Sciences of Orsay, French National Center for Scientific Research, 91405, Orsay, France
- Université Paris-Saclay, Institut Galien Paris-Saclay, French National Center for Scientific Research, 91400, Orsay, France
| | - Joice Maria Joseph
- Université Paris-Saclay, Institute of Molecular Sciences of Orsay, French National Center for Scientific Research, 91405, Orsay, France
- Université Paris-Saclay, Institut Galien Paris-Saclay, French National Center for Scientific Research, 91400, Orsay, France
| | - Frank Wien
- , Synchrotron Soleil, 91190, Saint-Aubin, France
| | - Xue Li
- Université Paris-Saclay, Institute of Molecular Sciences of Orsay, French National Center for Scientific Research, 91405, Orsay, France
| | - My-An Tran
- Université Paris-Saclay, Institute of Molecular Sciences of Orsay, French National Center for Scientific Research, 91405, Orsay, France
| | - Myriam Taverna
- Université Paris-Saclay, Institut Galien Paris-Saclay, French National Center for Scientific Research, 91400, Orsay, France
| | - Claire Smadja
- Université Paris-Saclay, Institut Galien Paris-Saclay, French National Center for Scientific Research, 91400, Orsay, France.
| | - Ruxandra Gref
- Université Paris-Saclay, Institute of Molecular Sciences of Orsay, French National Center for Scientific Research, 91405, Orsay, France.
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2
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Novikova OD, Rybinskaya TV, Zelepuga EA, Uversky VN, Kim NY, Chingizova EA, Menchinskaya ES, Khomenko VA, Chistyulin DK, Portnyagina OY. Formation of Amyloid-Like Conformational States of β-Structured Membrane Proteins on the Example of OMPF Porin from the Yersinia pseudotuberculosis Outer Membrane. BIOCHEMISTRY. BIOKHIMIIA 2024; 89:1079-1093. [PMID: 38981702 DOI: 10.1134/s0006297924060087] [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: 10/26/2023] [Revised: 03/14/2024] [Accepted: 03/31/2024] [Indexed: 07/11/2024]
Abstract
The work presents results of the in vitro and in silico study of formation of amyloid-like structures under harsh denaturing conditions by non-specific OmpF porin of Yersinia pseudotuberculosis (YpOmpF), a membrane protein with β-barrel conformation. It has been shown that in order to obtain amyloid-like porin aggregates, preliminary destabilization of its structure in a buffer solution with acidic pH at elevated temperature followed by long-term incubation at room temperature is necessary. After heating at 95°C in a solution with pH 4.5, significant conformational rearrangements are observed in the porin molecule at the level of tertiary and secondary structure of the protein, which are accompanied by the increase in the content of total β-structure and sharp decrease in the value of characteristic viscosity of the protein solution. Subsequent long-term exposure of the resulting unstable intermediate YpOmpF at room temperature leads to formation of porin aggregates of various shapes and sizes that bind thioflavin T, a specific fluorescent dye for the detection of amyloid-like protein structures. Compared to the initial protein, early intermediates of the amyloidogenic porin pathway, oligomers, have been shown to have increased toxicity to the Neuro-2aCCL-131™ mouse neuroblastoma cells. The results of computer modeling and analysis of the changes in intrinsic fluorescence during protein aggregation suggest that during formation of amyloid-like aggregates, changes in the structure of YpOmpF affect not only the areas with an internally disordered structure corresponding to the external loops of the porin, but also main framework of the molecule, which has a rigid spatial structure inherent to β-barrel.
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Affiliation(s)
- Olga D Novikova
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690021, Russia
| | - Tatyana V Rybinskaya
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690021, Russia
| | - Elena A Zelepuga
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690021, Russia
| | - Vladimir N Uversky
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33620, USA
| | - Nataliya Yu Kim
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690021, Russia
| | - Ekaterina A Chingizova
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690021, Russia
| | - Ekaterina S Menchinskaya
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690021, Russia
| | - Valentina A Khomenko
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690021, Russia
| | - Dmitriy K Chistyulin
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690021, Russia
| | - Olga Yu Portnyagina
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, 690021, Russia.
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3
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Fan Y, Gan C, Li Y, Kang L, Yi J. Fabrication of bovine serum albumin nanofibrils: Physicochemical characteristics, emulsifying and foaming activities. Int J Biol Macromol 2024; 271:132549. [PMID: 38782331 DOI: 10.1016/j.ijbiomac.2024.132549] [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: 10/08/2023] [Revised: 05/15/2024] [Accepted: 05/20/2024] [Indexed: 05/25/2024]
Abstract
Bovine serum albumin nanofibrils (BSNs) were fabricated under thermal treatment (85 °C) at acidic condition (pH 2.0) and the incubation time on the structural, and physicochemical characteristics were probed. The formation and development of BSNs have been detected and confirmed by Thioflavin T (ThT) fluorescence and circular dichroism (CD) measurements. The structural alterations of bovine serum albumin (BSA) have also been investigated using intrinsic fluorescence and Congo red (CGR) UV-vis spectroscopy. Atomic force microscopy (AFM) outcomes displayed the morphologies of BSNs at varied time, with a diameter of about 3 nm and a contour length of about 200 nm at 24 h. The apparent viscosities of BSNs at three different pH were in the following order: pH 3.0 > pH 5.0 > pH 7.0. Emulsifying and foaming properties of BSA were pronouncedly enhanced through fibrillation, which was highly correlated with the interfacial properties and structural characteristics. Highest EAI 54.2 m2/g was attained at 48 h and no pronounced alterations were observed for EAI at 24 h and 48 h. Maximum value of FC was obtained at 48 h for BSA. This study will provide some useful information in understanding the formation of BSNs and broaden their application in food systems as functional food ingredients.
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Affiliation(s)
- Yuting Fan
- School of Public Health, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, China
| | - Chao Gan
- Shenzhen Key Laboratory of Food Macromolecules Science and Processing, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yanmei Li
- Yining Customs Technology Center, Yining, Xinjiang 835000, China
| | - Ling Kang
- Shenzhen Key Laboratory of Food Macromolecules Science and Processing, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jiang Yi
- Shenzhen Key Laboratory of Food Macromolecules Science and Processing, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
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Sharma K, Sharma M. Invitro anti-biofilm activity and the artificial chaperone activity of quinoline-based ionic liquids. Colloids Surf B Biointerfaces 2024; 235:113773. [PMID: 38350204 DOI: 10.1016/j.colsurfb.2024.113773] [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: 12/03/2023] [Revised: 01/19/2024] [Accepted: 01/28/2024] [Indexed: 02/15/2024]
Abstract
The maintenance of protein conformation under stressful conditions is one of the prevailing challenges. This has led to a rapid growth in the ingenious protein therapies, in the past few decades, prioritizing the investigation of the structure and function of proteins in novel environments. Ionic Liquids (ILs) are currently dominating the biomedical industry, by endowing great solubility and stability to bio-molecules, especially proteins. Recently, researchers have devoted their attention towards the artificial chaperone activity of several classes of ILs. Thus, comprehending the long-term as well as momentary stability of protein conformation in IL formulations is an absolute necessity. In this context, we present the activity of quinoline-based ionic liquids (ILs) as artificial cheperones against time-dependent, self induced fibril formation in Bovine Serum Albumin (BSA). Herein, a series of quinoline-based ILs were synthesized and characterized. The structural and morphological changes induced in BSA in the presence and absence of these ILs are corroborated using several spectroscopic measurements and in-silico studies. The anti-microbial and antibiofilm activity of these compounds demonstrating their medicinal properties is substantiated in this study. Furthermore, the present research also gives an account of the toxicity of these compounds under in vivo conditions, using C. elegans as the model organism.
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Affiliation(s)
- Kajal Sharma
- Molecular Genetics of Aging, Dr. B.R. Ambedkar Center for Biomedical Research (ACBR), University of Delhi (North Campus), Delhi 110007, India
| | - Meenakshi Sharma
- Molecular Genetics of Aging, Dr. B.R. Ambedkar Center for Biomedical Research (ACBR), University of Delhi (North Campus), Delhi 110007, India.
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5
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Thissen J, Klassen MD, Constantinidis P, Hacker MC, Breitkreutz J, Teutenberg T, Fischer B. Online Coupling of Size Exclusion Chromatography to Capillary Enhanced Raman Spectroscopy for the Analysis of Proteins and Biopharmaceutical Drug Products. Anal Chem 2023; 95:17868-17877. [PMID: 38050672 DOI: 10.1021/acs.analchem.3c03991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
The online coupling of size exclusion chromatography (SEC) to capillary enhanced Raman spectroscopy (CERS) based on a liquid core waveguide (LCW) flow cell was applied for the first time to assess the higher-order structure of different proteins. This setup allows recording of Raman spectra of the monomeric protein within complex mixtures, since SEC enables the separation of the monomeric protein from matrix components such as excipients of a biopharmaceutical product and higher molecular weight species (e.g., aggregates). The acquired Raman spectra were used for structural elucidation of well characterized proteins such as bovine serum albumin, hen egg white lysozyme, and β-lactoglobulin and of the monoclonal antibody rituximab in a medicinal product. Additionally, the CERS detection of the disaccharide sucrose, which is used as a stabilizing excipient, was quantified to achieve a limit of detection (LOD) of 120 μg and a limit of quantification (LOQ) of 363 μg injected on the column.
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Affiliation(s)
- Jana Thissen
- Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA), Bliersheimer Straße 58-60, 47229 Duisburg, Germany
- Institute of Pharmaceutics and Biopharmaceutics, Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Martin D Klassen
- Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA), Bliersheimer Straße 58-60, 47229 Duisburg, Germany
| | - Philipp Constantinidis
- Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA), Bliersheimer Straße 58-60, 47229 Duisburg, Germany
| | - Michael C Hacker
- Institute of Pharmaceutics and Biopharmaceutics, Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Jörg Breitkreutz
- Institute of Pharmaceutics and Biopharmaceutics, Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Thorsten Teutenberg
- Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA), Bliersheimer Straße 58-60, 47229 Duisburg, Germany
| | - Björn Fischer
- Institute of Pharmaceutics and Biopharmaceutics, Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
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6
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Rani K, Pippal B, Singh SK, Karmakar A, Vankayala R, Jain N. Effects of the aspect ratio of plasmonic gold nanorods on the inhibition of lysozyme amyloid formation. Biomater Sci 2023. [PMID: 37161699 DOI: 10.1039/d3bm00400g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Amyloid formation due to altered protein folding and aggregation has gained significant attention due to its association with neurodegenerative disorders such as Alzheimer's disease, Parkinson's disease, Huntington's disease, and systemic lysozyme amyloidosis. Amyloids are characterized by parallel and anti-parallel cross-β-strands arranged to form stacks of sheets that provide stability and rigidity to the amyloid core. The prototypic protein Hen Egg White Lysozyme (HEWL) has been extensively used to understand protein hydrolysis, fragmentation, folding, misfolding, and amyloid formation. In the present study, we have examined the efficacy of plasmonic gold nanorods (GNRs) as an anti-amyloid agent against HEWL amyloids. Our results reveal that (i) the amyloid inhibition by plasmonic GNRs is dependent on their aspect ratio, (ii) the large aspect ratio GNRs ameliorate amyloid assembly completely, and (iii) GNRs interfere at several stages along the lysozyme fibril-formation pathway and block the conversion of monomeric and oligomeric intermediates into mature fibrils. Using a multi-parametric approach, we demonstrate that GNRs drive HEWL into off-pathway and amyloid-incompetent forms. To establish GNRs as generic amyloid inhibitors, we extended our studies to another archetypal protein, Bovine Serum Albumin (BSA), and observed similar results of GNRs inhibiting BSA aggregation. We believe that our results will pave the way for the potential use of GNRs with current therapeutics to reduce the burden of amyloid-related diseases.
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Affiliation(s)
- Khushboo Rani
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India.
| | - Bhumika Pippal
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India.
| | - Shubham Kumar Singh
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India.
| | - Anurupa Karmakar
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India.
| | - Raviraj Vankayala
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India.
- Interdisciplinary Research Platform Smart Healthcare, Indian Institute of Technology Jodhpur, Karwar 342030, India
| | - Neha Jain
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India.
- Centre for Emerging Technologies for Sustainable Development (CETSD), Indian Institute of Technology Jodhpur, Karwar 342030, India
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7
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Saha R, Mitra RK. Thermo-Resistive Phase Behavior of Trivalent Ion-Induced Microscopic Protein-Rich Phases: Correlating with Ion-Specific Protein Hydration. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4601-4610. [PMID: 36952287 DOI: 10.1021/acs.langmuir.2c03302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Proteins, in the presence of trivalent cations, exhibit intriguing phase behavior which is contrasting compared to mono- and divalent cations. At room temperature (RT), trivalent cations induce microscopic liquid-liquid phase separation (LLPS) in which a protein-rich phase coexists with a dilute phase. The critical solution temperature related phenomena in these complex fluids are well studied; however, such studies have mostly been restricted below the denaturation temperature (TM) of the protein(s) involved. Here, we probe the phase behavior of bovine serum albumin (BSA) incubated at 70 °C (>TM) in the presence of Na+, Mg2+, La3+, Y3+, and Ho3+ ions. BSA in the presence of mono- and bivalent ions forms an intense gel phase at 70 °C; however, the trivalent salts offer remarkable thermal resistivity and retain the fluid LLPS phase. We determine the microscopic phase behavior using differential interference contrast optical microscopy, which shows that the LLPS droplet structures in the M3+ ion-containing protein solutions prevail upon heating, whereas Mg2+ forms composed cross-linking gelation upon thermal incubation. We probe the interior environment of the protein aggregates by ps-resolved fluorescence anisotropy measurements using 8-anilino-1-naphthalenesulfonic acid (ANS) as an extrinsic fluorophore. It reveals that while the LLPS phase retains the rotational time constants upon heating, in the case of gelation, the immediate environment of ANS gets significantly perturbed. We investigate the explicit protein hydration at RT as well as at T > TM using the ATR THz-FTIR (1.5-22.5 THz) spectroscopy technique and found that hydration shows strong ion specificity and correlates the phase transition behavior.
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Affiliation(s)
- Ria Saha
- Department of Chemical and Biological Sciences, S.N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700106, India
| | - Rajib Kumar Mitra
- Department of Chemical and Biological Sciences, S.N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700106, India
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8
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Peydayesh M, Kistler S, Zhou J, Lutz-Bueno V, Victorelli FD, Meneguin AB, Spósito L, Bauab TM, Chorilli M, Mezzenga R. Amyloid-polysaccharide interfacial coacervates as therapeutic materials. Nat Commun 2023; 14:1848. [PMID: 37012278 PMCID: PMC10070338 DOI: 10.1038/s41467-023-37629-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 03/24/2023] [Indexed: 04/05/2023] Open
Abstract
Coacervation via liquid-liquid phase separation provides an excellent opportunity to address the challenges of designing nanostructured biomaterials with multiple functionalities. Protein-polysaccharide coacervates, in particular, offer an appealing strategy to target biomaterial scaffolds, but these systems suffer from the low mechanical and chemical stabilities of protein-based condensates. Here we overcome these limitations by transforming native proteins into amyloid fibrils and demonstrate that the coacervation of cationic protein amyloids and anionic linear polysaccharides results in the interfacial self-assembly of biomaterials with precise control of their structure and properties. The coacervates present a highly ordered asymmetric architecture with amyloid fibrils on one side and the polysaccharide on the other. We demonstrate the excellent performance of these coacervates for gastric ulcer protection by validating via an in vivo assay their therapeutic effect as engineered microparticles. These results point at amyloid-polysaccharides coacervates as an original and effective biomaterial for multiple uses in internal medicine.
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Affiliation(s)
- Mohammad Peydayesh
- ETH Zurich, Department of Health Sciences and Technology, 8092, Zurich, Switzerland
| | - Sabrina Kistler
- ETH Zurich, Department of Materials, 8093, Zurich, Switzerland
| | - Jiangtao Zhou
- ETH Zurich, Department of Health Sciences and Technology, 8092, Zurich, Switzerland
| | - Viviane Lutz-Bueno
- ETH Zurich, Department of Health Sciences and Technology, 8092, Zurich, Switzerland
- Paul Scherrer Institute PSI, 5232, Villigen, Switzerland
| | | | - Andréia Bagliotti Meneguin
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
| | - Larissa Spósito
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
| | - Tais Maria Bauab
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
| | - Raffaele Mezzenga
- ETH Zurich, Department of Health Sciences and Technology, 8092, Zurich, Switzerland.
- ETH Zurich, Department of Materials, 8093, Zurich, Switzerland.
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9
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Judy E, Kishore N. Prevention of insulin fibrillation by biocompatible choline-amino acid based ionic liquids: Biophysical insights. Biochimie 2023; 207:20-32. [PMID: 36471542 DOI: 10.1016/j.biochi.2022.11.013] [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: 08/08/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
We have synthesized biocompatible ionic liquids (ILs) with choline as cation and amino acids as anions to explore their potential towards prevention of fibrillation in insulin and the obtain corresponding mechanistic insights. This has been achieved by examining the effect of these ILs on insulin at the nucleation, elongation and maturation stages of the fibrillation process. A combination of high sensitivity isothermal titration calorimetry (ITC) and differential scanning calorimetry (DSC) have been employed along with spectroscopy and microscopy to evaluate interaction of the ILs at each stage of fibrillation quantitatively. Choline glycinate is observed to provide maximum stabilization to insulin compared to that provided by choline prolinate, choline leucinate, and choline valinate. This increased thermal stabilization has direct correlation with the extent of reduction in the fibrillation of insulin by ILs determined using Thioflavin T and 8-anilinonaphthalene sulfonate based fluorescence assays. ITC has permitted understanding nature of interaction of the ILs with the protein at different fibrillation stages in terms of standard molar enthalpy of interaction whereas DSC has enabled understanding the extent of reduction in thermal stability of the protein at these stages. These ILs are able to completely inhibit formation of insulin aggregates at a concentration of 50 mM. Stabilization of proteins by ILs could be explained based on involvement of preferential hydration process. The work provides biocompatible IL based approach in achieving stability and prevention of fibrillation in insulin.
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Affiliation(s)
- Eva Judy
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Nand Kishore
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
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10
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Acharya P, Kuila A, Pramanik U, Hathwar VR, Brandao P, Mukherjee S, Maity S, Maity T, Maity R, Chandra Samanta B. Combined theoretical and experimental insights on DNA and BSA binding interactions of Cu(ii) and Ni(ii) complexes along with the DPPH method of antioxidant assay and cytotoxicity studies. RSC Adv 2023; 13:7632-7644. [PMID: 36908538 PMCID: PMC9993069 DOI: 10.1039/d2ra08341h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 02/21/2023] [Indexed: 03/11/2023] Open
Abstract
This present study delineates the syntheses, detailed characterization and anti-proliferative potential against SiHa (cervical cancer cell) of two mononuclear complexes of Cu(ii) and Ni(ii) using a Schiff base ligand (L) derived from 2-hydroxybenzaldehyde and N-methyl-propane 1,3-diamine. The crystallographic results show the centro-symmetric space group of orthorhombic nature (Pccn) for Cu(ii) complex (1) where the central Cu(ii) has an inversion center symmetry with six co-ordinations resulting in a distorted octahedral geometry. Whereas, in complex (2), the two independent Ni(ii) atoms present in the special position within version symmetry and form a distorted geometry of octahedral nature with six coordinations. Absorption spectral titrations with Calf Thymus (CT) DNA and the extent of the decrease in relative emission intensities of DNA-bound ethidium bromide (EB) upon adding the complexes reveal the parallel trend in DNA binding affinities for both the complexes but with a small extent of binding capabilities. Bovine serum albumin (BSA) interaction studies demonstrate that complex 1 exhibits more promiscuous binding with BSA as compared to complex 2 from the spectroscopic and theoretical approaches. α,α-Diphenyl-β-picrylhydrazyl (DPPH) free radical scavenging method shows a little antioxidant or free radical scavenging activity for both the studied complexes. Cytotoxicity studies against SiHa expressed that the percentage of cell viability was reduced with time whereas in the same concentration and conditions, the viability percentage was higher for 3T3-L1 (several normal cell lines of mouse). The fluorescence imaging obtained from acridine orange (AO) and ethidium bromide (EtBr) demonstrates that the colour of the cancer cells has changed gradually dictating the cell apoptosis from day 1 to day 3.
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Affiliation(s)
- Prasun Acharya
- Department of Chemistry Mugberia Gangadhar Mahavidyalaya Bhupatinagar Purba Medinipur-721425 West Bengal India +91-3220-270236
| | - Arun Kuila
- Department of Chemistry Mugberia Gangadhar Mahavidyalaya Bhupatinagar Purba Medinipur-721425 West Bengal India +91-3220-270236
| | - Ushasi Pramanik
- Department of Chemistry, IISER Bhopal Bhopal Bypass Road, Bhauri Bhopal 462 066 Madhya Pradesh India
| | - Venkatesha R Hathwar
- School of Physical and Applied Sciences, Goa University Taleigao Plateau Goa 403 206 India
| | - Paula Brandao
- Departamento de Química, CICECO, Universidade de Aveiro 3810-193 Aveiro Portugal
| | - Saptarshi Mukherjee
- Department of Chemistry, IISER Bhopal Bhopal Bypass Road, Bhauri Bhopal 462 066 Madhya Pradesh India
| | - Swapan Maity
- School of Materials Science and Technology (SMST), Indian Institute of Technology (IIT), BHU India
| | - Tithi Maity
- Department of Chemistry, Prabhat Kumar College Purba Medinipur-721401 Contai West Bengal India
| | - Ribhu Maity
- Department of Chemistry Mugberia Gangadhar Mahavidyalaya Bhupatinagar Purba Medinipur-721425 West Bengal India +91-3220-270236
| | - Bidhan Chandra Samanta
- Department of Chemistry Mugberia Gangadhar Mahavidyalaya Bhupatinagar Purba Medinipur-721425 West Bengal India +91-3220-270236
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11
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Solid state synthesis of bispyridyl-ferrocene conjugates with unusual site selective 1,4-Michael addition, as potential inhibitor and electrochemical probe for fibrillation in amyloidogenic protein. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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De France KJ, Kummer N, Campioni S, Nyström G. Phase Behavior, Self-Assembly, and Adhesive Potential of Cellulose Nanocrystal-Bovine Serum Albumin Amyloid Composites. ACS APPLIED MATERIALS & INTERFACES 2023; 15:1958-1968. [PMID: 36576901 DOI: 10.1021/acsami.2c14406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Structural organization is ubiquitous throughout nature and contributes to the outstanding mechanical/adhesive performance of organisms including geckoes, barnacles, and crustaceans. Typically, these types of structures are composed of polysaccharide and protein-based building blocks, and therefore, there is significant research interest in using similar building blocks in the fabrication of high-performance synthetic materials. Via evaporation-induced self-assembly, the organization of cellulose nanocrystals (CNCs) into a chiral nematic regime results in the formation of structured CNC films with prominent mechanical, optical, and photonic properties. However, there remains an important knowledge gap in relating equilibrium suspension behavior to dry film structuring and other functional properties of CNC-based composite materials. Herein, we systematically investigate the phase behavior of composite suspensions of rigid CNCs and flexible bovine serum albumin (BSA) amyloids in relation to their self-assembly into ordered films and structural adhesives. Increasing the concentration of BSA amyloids in the CNC suspensions results in a clear decrease in the anisotropic fraction volume percent via the preferential accumulation of BSA amyloids in the isotropic regime (as a result of depletion interactions). This translates to a blue shift or compression of the chiral nematic pitch in dried films. Finally, we also demonstrate the synergistic adhesive potential of CNC-BSA amyloid composites, with ultimate lap shear strengths in excess of 500 N/mg. We anticipate that understanding the systematic relationships between material interactions and self-assembly in suspension such as those investigated here will pave the way for a new generation of structured composite materials with a variety of enhanced functionalities.
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Affiliation(s)
- Kevin J De France
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf8600, Switzerland
- Department of Chemical Engineering, Queen's University, 19 Division Street, Kingston, OntarioK7L 3N6, Canada
| | - Nico Kummer
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf8600, Switzerland
- Department of Health Sciences and Technology, ETH Zürich, Schmelzbergstrasse 9, Zürich8092, Switzerland
| | - Silvia Campioni
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf8600, Switzerland
| | - Gustav Nyström
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf8600, Switzerland
- Department of Health Sciences and Technology, ETH Zürich, Schmelzbergstrasse 9, Zürich8092, Switzerland
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13
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Sarkar D, Maity NC, Shome G, Varnava KG, Sarojini V, Vivekanandan S, Sahoo N, Kumar S, Mandal AK, Biswas R, Bhunia A. Mechanistic insight into functionally different human islet polypeptide (hIAPP) amyloid: the intrinsic role of the C-terminal structural motifs. Phys Chem Chem Phys 2022; 24:22250-22262. [PMID: 36098073 DOI: 10.1039/d2cp01650h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Targeting amyloidosis requires high-resolution insight into the underlying mechanisms of amyloid aggregation. The sequence-specific intrinsic properties of a peptide or protein largely govern the amyloidogenic propensity. Thus, it is essential to delineate the structural motifs that define the subsequent downstream amyloidogenic cascade of events. Additionally, it is important to understand the role played by extrinsic factors, such as temperature or sample agitation, in modulating the overall energy barrier that prompts divergent nucleation events. Consequently, these changes can affect the fibrillation kinetics, resulting in structurally and functionally distinct amyloidogenic conformers associated with disease pathogenesis. Here, we have focused on human Islet Polypeptide (hIAPP) amyloidogenesis for the full-length peptide along with its N- and C-terminal fragments, under different temperatures and sample agitation conditions. This helped us to gain a comprehensive understanding of the intrinsic role of specific functional epitopes in the primary structure of the peptide that regulates amyloidogenesis and subsequent cytotoxicity. Intriguingly, our study involving an array of biophysical experiments and ex vivo data suggests a direct influence of external changes on the C-terminal fibrillating sequence. Furthermore, the observations indicate a possible collaborative role of this segment in nucleating hIAPP amyloidogenesis in a physiological scenario, thus making it a potential target for future therapeutic interventions.
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Affiliation(s)
- Dibakar Sarkar
- Department of Biophysics, Bose Institute, EN 80, Sector V, Kolkata 700 091, India.
| | - Narayan Chandra Maity
- Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Sector-III, Salt Lake, Kolkata 700106, India
| | - Gourav Shome
- Division of Molecular Medicine, Bose Institute, EN 80, Sector V, Kolkata 700 091, India
| | - Kyriakos Gabriel Varnava
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Vijayalekshmi Sarojini
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | | | - Nirakar Sahoo
- Department of Biology, University of Texas Rio Grande Valley, Edinburg, Texas, 78539, USA
| | - Sourav Kumar
- Department of Biophysics, Bose Institute, EN 80, Sector V, Kolkata 700 091, India.
| | - Atin Kumar Mandal
- Division of Molecular Medicine, Bose Institute, EN 80, Sector V, Kolkata 700 091, India
| | - Ranjit Biswas
- Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Sector-III, Salt Lake, Kolkata 700106, India
| | - Anirban Bhunia
- Department of Biophysics, Bose Institute, EN 80, Sector V, Kolkata 700 091, India.
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14
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Housmans JAJ, Houben B, Monge-Morera M, Asvestas D, Nguyen HH, Tsaka G, Louros N, Carpentier S, Delcour JA, Rousseau F, Schymkowitz J. Investigating the Sequence Determinants of the Curling of Amyloid Fibrils Using Ovalbumin as a Case Study. Biomacromolecules 2022; 23:3779-3797. [PMID: 36027608 DOI: 10.1021/acs.biomac.2c00660] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Highly ordered, straight amyloid fibrils readily lend themselves to structure determination techniques and have therefore been extensively characterized. However, the less ordered curly fibrils remain relatively understudied, and the structural organization underlying their specific characteristics remains poorly understood. We found that the exemplary curly fibril-forming protein ovalbumin contains multiple aggregation prone regions (APRs) that form straight fibrils when isolated as peptides or when excised from the full-length protein through hydrolysis. In the context of the intact full-length protein, however, the regions separating the APRs facilitate curly fibril formation. In fact, a meta-analysis of previously reported curly fibril-forming proteins shows that their inter-APRs are significantly longer and more hydrophobic when compared to straight fibril-forming proteins, suggesting that they may cause strain in the amyloid state. Hence, inter-APRs driving curly fibril formation may not only apply to our model protein but rather constitute a more general mechanism.
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Affiliation(s)
- Joëlle A J Housmans
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Herestraat 49, 3000 Leuven, Belgium.,Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, box 802, 3000 Leuven, Belgium
| | - Bert Houben
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Herestraat 49, 3000 Leuven, Belgium.,Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, box 802, 3000 Leuven, Belgium
| | - Margarita Monge-Morera
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, 3001 Leuven, Belgium
| | - Diego Asvestas
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Herestraat 49, 3000 Leuven, Belgium.,Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, box 802, 3000 Leuven, Belgium
| | - Hung Huy Nguyen
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Herestraat 49, 3000 Leuven, Belgium.,Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, box 802, 3000 Leuven, Belgium
| | - Grigoria Tsaka
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Herestraat 49, 3000 Leuven, Belgium.,Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, box 802, 3000 Leuven, Belgium
| | - Nikolaos Louros
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Herestraat 49, 3000 Leuven, Belgium.,Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, box 802, 3000 Leuven, Belgium
| | - Sebastien Carpentier
- Facility for Systems Biology Based Mass Spectrometry, KU Leuven, Herestraat 49, 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, 3001 Leuven, Belgium
| | - Frederic Rousseau
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Herestraat 49, 3000 Leuven, Belgium.,Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, box 802, 3000 Leuven, Belgium
| | - Joost Schymkowitz
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Herestraat 49, 3000 Leuven, Belgium.,Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, box 802, 3000 Leuven, Belgium
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15
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Abstract
Amyloids are organized suprastructural polypeptide arrangements. The prevalence of amyloid-related processes of pathophysiological relevance has been linked to aging-related degenerative diseases. Besides the role of genetic polymorphisms on the relative risk of amyloid diseases, the contributions of nongenetic ontogenic cluster of factors remain elusive. In recent decades, mounting evidences have been suggesting the role of essential micronutrients, in particular transition metals, in the regulation of amyloidogenic processes, both directly (such as binding to amyloid proteins) or indirectly (such as regulating regulatory partners, processing enzymes, and membrane transporters). The features of transition metals as regulatory cofactors of amyloid proteins and the consequences of metal dyshomeostasis in triggering amyloidogenic processes, as well as the evidences showing amelioration of symptoms by dietary supplementation, suggest an exaptative role of metals in regulating amyloid pathways. The self- and cross-talk replicative nature of these amyloid processes along with their systemic distribution support the concept of their metastatic nature. The role of amyloidosis as nutrient sensors would act as intra- and transgenerational epigenetic metabolic programming factors determining health span and life span, viability, which could participate as an evolutive selective pressure.
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Affiliation(s)
- Luís Maurício T R Lima
- Laboratory for Pharmaceutical Biotechnology - pbiotech, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratory for Macromolecules (LAMAC-DIMAV), National Institute of Metrology, Quality and Technology - INMETRO, Duque de Caxias, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tháyna Sisnande
- Laboratory for Pharmaceutical Biotechnology - pbiotech, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
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16
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Khaibrakhmanova D, Nikiforova A, Li Z, Sedov I. Effect of ligands with different affinity on albumin fibril formation. Int J Biol Macromol 2022; 204:709-717. [PMID: 35134455 DOI: 10.1016/j.ijbiomac.2022.01.189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 01/11/2022] [Accepted: 01/29/2022] [Indexed: 11/18/2022]
Abstract
The effect of binding of several ligands to bovine serum albumin on the kinetics of fibril formation at denaturing conditions is studied. The considered ligands are clinical drugs with different binding constants to albumin: relatively strong binders (naproxen, ibuprofen, warfarin with 105 to 107 binding constant values) and weak binders (isoniazid, ranitidine with 103 to 104 binding constant values). The data of thioflavin fluorescence binding assay, Congo red binding assay, and circular dichroism spectroscopy indicate ligand concentration-dependent suppression of fibril formation in the presence of strong binders and no effects in the presence of weak binders. Analysis of kinetic curves shows no induction lag associated with fibril nucleation and the first-order kinetics of fibril formation with respect to albumin concentration for all the studied systems. Using DSC method, the fractions of unfolded albumin at incubation temperature were determined for each albumin-ligand system and ligand concentration. Their magnitudes ranging from 0 to 1 correlate with the initial rates of fibril formation and with equilibrium concentrations of fibrils formed in the system after incubation for at least 120 min. The results indicate that fibrils are formed from partially or completely denatured albumin form with the rate proportional to the fraction of this form. Strong albumin binders act as thermodynamic inhibitors of fibrillation shifting the unfolding equilibrium to the side of the native ligand-bound protein.
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Affiliation(s)
| | - Alena Nikiforova
- Chemical Institute, Kazan Federal University, Kremlevskaya 18, 420008 Kazan, Russia
| | - Ziying Li
- Chemical Institute, Kazan Federal University, Kremlevskaya 18, 420008 Kazan, Russia
| | - Igor Sedov
- Chemical Institute, Kazan Federal University, Kremlevskaya 18, 420008 Kazan, Russia.
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17
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Nian Y, Zhang Y, Ruan C, Hu B. Update of the interaction between polyphenols and amyloid fibrils. Curr Opin Food Sci 2022. [DOI: 10.1016/j.cofs.2021.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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18
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Zeng HJ, Sun LJ, Qu LB, Yang R. Modulation of bovine serum albumin aggregation by glutathione functionalized MoS 2 quantum dots. Int J Biol Macromol 2022; 195:237-245. [PMID: 34896474 DOI: 10.1016/j.ijbiomac.2021.12.005] [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: 09/21/2021] [Revised: 11/25/2021] [Accepted: 12/01/2021] [Indexed: 11/05/2022]
Abstract
In present study, a novel glutathione functionalized MoS2 quantum dots (GSH-MoS2 QDs) was synthesized from sodium molybdate dehydrate and glutathione by using a one-pot hydrothermal method. After they were characterized, the influence of GSH-MoS2 QDs on amyloid aggregation of bovine serum albumin (BSA) was investigated by various analytical methods including thioflavin T fluorescence assay, circular dichroism and transmission electron microscope. Moreover, the effect of GSH-MoS2 QDs on cytotoxicity induced by BSA amyloid fibrils and cell penetration were evaluated by MTT assay and confocal fluorescence imaging, respectively. The results indicated that the GSH-MoS2 QDs not only had good water solubility, excellent biocompatibility and low cytotoxicity, but also could obviously inhibit the aggregation of BSA and depolymerize the formed BSA aggregates. The data obtained from this work demonstrated that the GSH-MoS2 QDs is expected to become a candidate drug for the treatment of amyloid-related diseases.
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Affiliation(s)
- Hua-Jin Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Li-Jun Sun
- The College of Chemistry, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ling-Bo Qu
- The College of Chemistry, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ran Yang
- The College of Chemistry, Zhengzhou University, Zhengzhou 450001, PR China.
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19
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Tikhonova TN, Rovnyagina NN, Arnon ZA, Yakimov BP, Efremov YM, Cohen‐Gerassi D, Halperin‐Sternfeld M, Kosheleva NV, Drachev VP, Svistunov AA, Timashev PS, Adler‐Abramovich L, Shirshin EA. Mechanical Enhancement and Kinetics Regulation of Fmoc‐Diphenylalanine Hydrogels by Thioflavin T. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tatiana N. Tikhonova
- Department of Physics M. V. Lomonosov Moscow State University Leninskie gory 1/2 119991 Moscow Russia
| | - Nataliya N. Rovnyagina
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
| | - Zohar A. Arnon
- Department of Oral Biology The Goldschleger School of Dental Medicine Sackler Faculty of Medicine The Center for Nanoscience and Nanotechnology The Center for the Physics and Chemistry of Living Systems Tel Aviv University 69978 Tel Aviv Israel
| | - Boris P. Yakimov
- Department of Physics M. V. Lomonosov Moscow State University Leninskie gory 1/2 119991 Moscow Russia
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
| | - Yuri M. Efremov
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
- Institute for Regenerative Medicine Sechenov University 8-2 Trubetskaya st. 119991 Moscow Russia
| | - Dana Cohen‐Gerassi
- Department of Oral Biology The Goldschleger School of Dental Medicine Sackler Faculty of Medicine The Center for Nanoscience and Nanotechnology The Center for the Physics and Chemistry of Living Systems Tel Aviv University 69978 Tel Aviv Israel
| | - Michal Halperin‐Sternfeld
- Department of Oral Biology The Goldschleger School of Dental Medicine Sackler Faculty of Medicine The Center for Nanoscience and Nanotechnology The Center for the Physics and Chemistry of Living Systems Tel Aviv University 69978 Tel Aviv Israel
| | - Nastasia V. Kosheleva
- Institute for Regenerative Medicine Sechenov University 8-2 Trubetskaya st. 119991 Moscow Russia
| | - Vladimir P. Drachev
- Center for Photonics and Quantum Materials Skolkovo Institute of Science and Technology Skolkovo Innovation Center Nobel st, Building 3 121205 Moscow Russia
| | - Andrey A. Svistunov
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
| | - Peter S. Timashev
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
- Institute for Regenerative Medicine Sechenov University 8-2 Trubetskaya st. 119991 Moscow Russia
- N.N. Semenov Federal Research Center for Chemical Physics Russian Academy of Sciences Kosigina str., 4 119991 Moscow Russia
- Chemistry Department Lomonosov Moscow State University Leninskiye Gory 1–3 119991 Moscow Russia
| | - Lihi Adler‐Abramovich
- Department of Oral Biology The Goldschleger School of Dental Medicine Sackler Faculty of Medicine The Center for Nanoscience and Nanotechnology The Center for the Physics and Chemistry of Living Systems Tel Aviv University 69978 Tel Aviv Israel
| | - Evgeny A. Shirshin
- Department of Physics M. V. Lomonosov Moscow State University Leninskie gory 1/2 119991 Moscow Russia
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
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20
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Tikhonova TN, Rovnyagina NN, Arnon ZA, Yakimov BP, Efremov YM, Cohen-Gerassi D, Halperin-Sternfeld M, Kosheleva NV, Drachev VP, Svistunov AA, Timashev PS, Adler-Abramovich L, Shirshin EA. Mechanical Enhancement and Kinetics Regulation of Fmoc-Diphenylalanine Hydrogels by Thioflavin T. Angew Chem Int Ed Engl 2021; 60:25339-25345. [PMID: 34590774 DOI: 10.1002/anie.202107063] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/20/2021] [Indexed: 11/11/2022]
Abstract
The self-assembly of peptides is a key direction for fabrication of advanced materials. Novel approaches for fine tuning of macroscopic and microscopic properties of peptide self-assemblies are of a high demand for constructing biomaterials with desired properties. In this work, while studying the kinetics of the Fmoc-Diphenylalanine (Fmoc-FF) dipeptide self-assembly using the Thioflavin T (ThT) dye, we observed that the presence of ThT strongly modifies structural and mechanical properties of the Fmoc-FF hydrogel. Notably, the presence of ThT resulted in a tenfold increase of the gelation time and in the formation of short and dense fibers in the hydrogel. As a result of these morphological alteration higher thermal stability, and most important, tenfold increase of the hydrogel rigidity was achieved. Hence, ThT not only slowed the kinetics of the Fmoc-FF hydrogel formation, but also strongly enhanced its mechanical properties. In this study, we provide a detailed description of the ThT effect on the hydrogel properties and suggest the mechanisms for this phenomenon, paving the way for the novel approach to the control of the peptide hydrogels' micro- and macroscale properties.
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Affiliation(s)
- Tatiana N Tikhonova
- Department of Physics, M. V. Lomonosov Moscow State University, Leninskie gory 1/2, 119991, Moscow, Russia
| | - Nataliya N Rovnyagina
- World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia
| | - Zohar A Arnon
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, The Center for Nanoscience and Nanotechnology, The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Boris P Yakimov
- Department of Physics, M. V. Lomonosov Moscow State University, Leninskie gory 1/2, 119991, Moscow, Russia.,World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia
| | - Yuri M Efremov
- World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia.,Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., 119991, Moscow, Russia
| | - Dana Cohen-Gerassi
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, The Center for Nanoscience and Nanotechnology, The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Michal Halperin-Sternfeld
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, The Center for Nanoscience and Nanotechnology, The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Nastasia V Kosheleva
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., 119991, Moscow, Russia
| | - Vladimir P Drachev
- Center for Photonics and Quantum Materials, Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Nobel st, Building 3, 121205, Moscow, Russia
| | - Andrey A Svistunov
- World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia
| | - Peter S Timashev
- World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia.,Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., 119991, Moscow, Russia.,N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Kosigina str., 4, 119991, Moscow, Russia.,Chemistry Department, Lomonosov Moscow State University, Leninskiye Gory 1-3, 119991, Moscow, Russia
| | - Lihi Adler-Abramovich
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, The Center for Nanoscience and Nanotechnology, The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Evgeny A Shirshin
- Department of Physics, M. V. Lomonosov Moscow State University, Leninskie gory 1/2, 119991, Moscow, Russia.,World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia
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21
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A correlation of thermodynamic parameters with size of copper-chelated albumin aggregates. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04911-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Li Y, Han R, Chen M, Yang X, Zhan Y, Wang L, Luo X. Electrochemical Biosensor with Enhanced Antifouling Capability Based on Amyloid-like Bovine Serum Albumin and a Conducting Polymer for Ultrasensitive Detection of Proteins in Human Serum. Anal Chem 2021; 93:14351-14357. [PMID: 34648255 DOI: 10.1021/acs.analchem.1c04153] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Biofouling has been a substantial burden on biomarker analysis in complex biological media, leading to poor sensitivity and selectivity or even malfunction of the sensing devices. In this work, an electrochemical biosensor with excellent antifouling ability and high stability was fabricated based on amyloid-like bovine serum albumin (AL-BSA) crosslinked with the conducting polymer polyaniline (PANI). Compared with the crosslinked conventional bovine serum albumin (BSA), the crosslinked AL-BSA exhibited enhanced antifouling capability, and it was able to form an effective antifouling film within a significantly short reaction time. With further immobilization of immunoglobulin M (IgM) antibodies onto the prepared AL-BSA surface via the formation of amide bonds, an electrochemical biosensor capable of assaying IgM in human serum samples with superior selectivity and sensitivity was constructed. The biosensor exhibited excellent antifouling performance even in 100% human serum, a low limit of detection down to 2.32 pg mL-1, and acceptable accuracy for real sample analysis compared with the standard enzyme-linked immunosorbent assay for IgM detection. This strategy of using AL-BSA to construct antifouling sensing interfaces provided a reliable diagnostic method for the detection of a series of protein biomarkers in complex biological media.
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Affiliation(s)
- Yang Li
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Rui Han
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Min Chen
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xiqin Yang
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yinan Zhan
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Lei Wang
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xiliang Luo
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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23
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Hu A, Li L. Effect mechanism of ultrasound pretreatment on fibrillation Kinetics, physicochemical properties and structure characteristics of soy protein isolate nanofibrils. ULTRASONICS SONOCHEMISTRY 2021; 78:105741. [PMID: 34537680 PMCID: PMC8455861 DOI: 10.1016/j.ultsonch.2021.105741] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/20/2021] [Accepted: 08/24/2021] [Indexed: 05/12/2023]
Abstract
Self-assembly of soy proteins into nanofibrils is gradually considered as an effective method to improve their technical and functional properties. Ultrasound is a non-thermal, non-toxic and environmentally friendly technology that can modulate the formation of protein nanofibrils through controlled structural modification. In this research, the effect of ultrasound pretreatment on soy protein isolate nanofibrils (SPIN) was evaluated by fibrillation kinetics, physicochemical properties and structure characteristics. The results showed that the optimum ultrasound condition (20% amplitude, 15 min, 5 s on-time and 5 s off-time) could increase the formation rate of SPIN by 38.66%. Ultrasound reduced the average particle size of SPIN from 191.90 ± 5.40 nm to 151.83 ± 3.27 nm. Ultrasound could increase the surface hydrophobicity to 1547.67 in the initial stage of nanofibrils formation, and extend the duration of surface hydrophobicity increased, indicating ultrasound could expose more binding sites, creating more beneficial conditions for nanofibrils formation. Ultrasound could change the secondary and tertiary structure of SPIN. The reduction of α-helix content of ultrasound-pretreated soy protein isolate nanofibrils (USPIN) was 12.1% (versus 5.3% for SPIN) and the increase of β-sheet content was 5.9% (versus 3.5% for SPIN) during fibrillation. Ultrasound could accelerate the formation of SPIN by promoting the unfolding of SPI, exposure of hydrophobic groups and formation of β-sheets. Microscopic images revealed that USPIN generated a curlier and looser shape. And ultrasound reduced the zeta potential, free sulfhydryl groups content and viscosity of SPIN. SDS-PAGE results showed that ultrasound could promote the conversion of SPI into low molecular weight peptides, providing building blocks for the nanofibrils formation. The results indicated that ultrasound pretreatment could be a promising technology to accelerate SPIN formation and promote its application in food industry, but further research is needed for the improvement of the functional properties of SPIN.
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Affiliation(s)
- Anna Hu
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Liang Li
- College of Food Science, Northeast Agricultural University, Harbin 150030, China.
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24
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Nirwal S, Bharathi V, Patel BK. Amyloid-like aggregation of bovine serum albumin at physiological temperature induced by cross-seeding effect of HEWL amyloid aggregates. Biophys Chem 2021; 278:106678. [PMID: 34492451 DOI: 10.1016/j.bpc.2021.106678] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/28/2021] [Accepted: 08/29/2021] [Indexed: 01/16/2023]
Abstract
BSA can form amyloid-like aggregates in vitro at 65 °C. Heterologous amyloid can proposedly cross-seed other protein's aggregation, however, general mechanisms and driving conditions remain to be vividly elucidated. Here, we examined if pre-formed HEWL amyloid can cross-seed the aggregation of BSA at physiological temperature, 37 °C, and whether the efficacy depends on the BSA conformation. We find that at pH 3.0, 37 °C where BSA manifests exposure of abundant hydrophobic patches, HEWL amyloid efficiently drives BSA into ThT-positive, sarkosyl-resistant, β-sheet rich amyloid-like aggregates exhibiting fibrils in TEM. On the contrary, HEWL amyloid fails to cross-seed the BSA aggregation at pH 7.0, 37 °C where BSA has largely internalized hydrophobic patches. Strikingly, human lysozyme amyloid could also cross-seed human serum albumin aggregation at pH 3.0, 37 °C. Thus, heterologous amyloid cross-seeding can help overcome the energy-barrier for aggregation of other proteins that, for any reason, may have perturbed and promiscuous structural conformation at physiological temperatures.
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Affiliation(s)
- Sadhana Nirwal
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India
| | - Vidhya Bharathi
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India
| | - Basant K Patel
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India.
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25
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Singh G, Kaur M, Singh M, Kaur H, Kang TS. Spontaneous Fibrillation of Bovine Serum Albumin at Physiological Temperatures Promoted by Hydrolysis-Prone Ionic Liquids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10319-10329. [PMID: 34407374 DOI: 10.1021/acs.langmuir.1c01350] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
This study highlights the role of time-dependent hydrolysis of ionic liquid anion, [BF4]-, of ionic liquid (IL), 1-ethyl-3-methylimidazolium tetrafluoroborate, [C2mim][BF4], which results in ever-changing pH conditions. Such pH changes along with the ionic interactions bring conformational changes in bovine serum albumin (BSA), leading to the formation of amyloid fibers at 37 °C without external control of pH or addition of electrolyte. The fibrillation of BSA occurs spontaneously with the addition of IL; however, the highest growth rate has been observed in aqueous solution of 10% IL (v/v %) among investigated systems. Thioflavin T (ThT) fluorescence emission has been employed to monitor the growth and development of β-sheet content in amyloid fibrils. The structural alterations in BSA have also been investigated using intrinsic fluorescence measurements. Circular dichroism (CD) measurements confirmed the formation of amyloid fibrils. Transmission electron microscopy (TEM) has been explored to establish the morphologies of BSA fibrils at different intervals of time, whereas atomic force microscopy (AFM) has established the helically twisted nature of grown amyloid fibrils. The docking studies have been utilized to understand the insertion of IL ions in different domains of BSA, which along with decreased pH cause the unfolding and growth of BSA into amyloid fibrils. It is expected that the results obtained from this study would help to understand the impact of IL containing [BF4]- anion on protein stability and aggregation along with providing a new platform to control the formation of amyloid fibrils and other biomaterials driven via ionic interactions and alterations in pH.
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Affiliation(s)
- Gagandeep Singh
- Department of Chemistry, UGC-Centre for Advance Studies-II, Guru Nanak Dev University, Amritsar 143005, India
| | - Manvir Kaur
- Department of Chemistry, UGC-Centre for Advance Studies-II, Guru Nanak Dev University, Amritsar 143005, India
| | - Manpreet Singh
- Department of Chemistry, UGC-Centre for Advance Studies-II, Guru Nanak Dev University, Amritsar 143005, India
| | - Harmandeep Kaur
- Department of Chemistry, UGC-Centre for Advance Studies-II, Guru Nanak Dev University, Amritsar 143005, India
| | - Tejwant Singh Kang
- Department of Chemistry, UGC-Centre for Advance Studies-II, Guru Nanak Dev University, Amritsar 143005, India
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26
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Sharma S, Modi P, Sharma G, Deep S. Kinetics theories to understand the mechanism of aggregation of a protein and to design strategies for its inhibition. Biophys Chem 2021; 278:106665. [PMID: 34419715 DOI: 10.1016/j.bpc.2021.106665] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 12/14/2022]
Abstract
Protein aggregation phenomenon is closely related to the formation of amyloids which results in many neurodegenerative diseases like Alzheimer's, Parkinson's, Huntington's, and Amyotrophic Lateral Sclerosis. In order to prevent and treat these diseases, a clear understanding of the mechanism of misfolding and self-assembly of peptides and proteins is very crucial. The aggregation of a protein may involve various microscopic events. Multiple simulations utilizing the solutions of the master equation have given a better understanding of the kinetic profiles involved in the presence and absence of a particular microscopic event. This review focuses on understanding the contribution of these molecular events to protein aggregation based on the analysis of kinetic profiles of aggregation. We also discuss the effect of inhibitors, which target various species of aggregation pathways, on the kinetic profile of protein aggregation. At the end of this review, some strategies for the inhibition of aggregation that can be utilized by combining the chemical kinetics approach with thermodynamics are proposed.
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Affiliation(s)
- Shilpa Sharma
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Priya Modi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Gargi Sharma
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Shashank Deep
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
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27
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Park H, Park JY, Park KM, Chang PS. Effects of freezing rate on structural changes in L-lactate dehydrogenase during the freezing process. Sci Rep 2021; 11:13643. [PMID: 34211044 PMCID: PMC8249661 DOI: 10.1038/s41598-021-93127-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/16/2021] [Indexed: 11/22/2022] Open
Abstract
Freezing is a common method for improving enzyme storage stability. During the freezing process, the freezing rate is an important parameter that can affect protein stability. However, there is limited information on the denaturation mechanisms and protein conformational changes associated with the freezing rate. In this study, the effects of freezing rate on activity loss and conformational changes in a model enzyme, l-lactate dehydrogenase, were evaluated. Enzyme solutions were frozen at various rates, from 0.2 to 70.6 °C/min, and ice seeding was conducted to reduce supercooling. The results demonstrated that fast freezing results in activity loss, structural changes, and aggregation. The residual activities at freezing rates of 0.2, 12.8, and 70.6 °C/min were 77.6 ± 0.9%, 64.1 ± 0.4%, and 44.8 ± 2.0%, respectively. As the freezing rate increased, the degree of dissociation and unfolding increased significantly, as determined using blue native-polyacrylamide gel electrophoresis and fluorescence spectroscopy. Moreover, a large number of amyloid aggregates were detected in samples frozen at a fast freezing rate (70.6 °C/min). The enzyme inactivation mechanism induced by fast freezing was proposed in terms of increased dehydration at the enzyme surface and an ice/unfroze solution interface, which could be helpful to establish a common understanding of enzyme inactivation during the freezing process.
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Affiliation(s)
- Haena Park
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jun-Young Park
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kyung-Min Park
- Department of Food Science and Biotechnology, Wonkwang University, Iksan, 54538, Republic of Korea.,Center for Agricultural Microorganism and Enzyme, Seoul National University, Seoul, 08826, Republic of Korea
| | - Pahn-Shick Chang
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea. .,Center for Food and Bioconvergence, Seoul National University, Seoul, 08826, Republic of Korea. .,Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea. .,Center for Agricultural Microorganism and Enzyme, Seoul National University, Seoul, 08826, Republic of Korea.
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28
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Masroor A, Chandel TI, Malik S, Mateen QN, Uversky VN, Khan RH. Evaluation of ThT augmentation and RLS inner filter effect caused by highly fluorescent coumarin derivative and establishing it as true inhibitor of amyloid fibrillation. Arch Biochem Biophys 2021; 709:108981. [PMID: 34214556 DOI: 10.1016/j.abb.2021.108981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 06/25/2021] [Accepted: 06/25/2021] [Indexed: 10/21/2022]
Abstract
Screening of inhibitors that slow down or suppress amyloid fibrils formation relies on some simple but sensitive spectroscopy techniques. Thioflavin T (ThT) fluorescence assay is one of the most common, amyloid specific and sensitive method. However, if an inhibitor is itself fluorescent in the ThT fluorescence range, its screening becomes complicated and require complementary assays. One of such molecules, 6, 7-dihydroxycoumarin (6, 7-DHC, also known as aesculetin, esculetin, and cichorigenin) is fluorescent in the ThT emission range and absorbs in the ThT excitation range. Therefore, it can produce a subtractive effect attributed to primary inner filter effect and/or additive effect due to its self-fluorescence in ThT assay. Our study shows that 6, 7-DHC produces an additive effect in ThT fluorescence, which is minimized at high concentration of ThT and decrease in ThT fluorescence is solely due to its inhibitory effect against HSA fibrillation. These ThT fluorescence-based results are verified through other complementary assays, such as Rayleigh and dynamic light scattering and amyloid-specific Congo red binding assay. Furthermore, hydrophobicity reduction is studied through Nile red (NR) and kinetics through far-UV circular dichroism (far-UV CD) in place of the most commonly employed ThT assay owing to extremely high fluorescence of 6, 7-DHC during initial incubation period.
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Affiliation(s)
- Aiman Masroor
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, India
| | - Tajalli Ilm Chandel
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, India
| | - Sadia Malik
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, India
| | - Qazi Noorul Mateen
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, India
| | - Vladimir N Uversky
- Department of Molecular Biology and USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, 33612, United States
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, India.
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29
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Sirangelo I, Iannuzzi C. Understanding the Role of Protein Glycation in the Amyloid Aggregation Process. Int J Mol Sci 2021; 22:ijms22126609. [PMID: 34205510 PMCID: PMC8235188 DOI: 10.3390/ijms22126609] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 02/06/2023] Open
Abstract
Protein function and flexibility is directly related to the native distribution of its structural elements and any alteration in protein architecture leads to several abnormalities and accumulation of misfolded proteins. This phenomenon is associated with a range of increasingly common human disorders, including Alzheimer and Parkinson diseases, type II diabetes, and a number of systemic amyloidosis characterized by the accumulation of amyloid aggregates both in the extracellular space of tissues and as intracellular deposits. Post-translational modifications are known to have an active role in the in vivo amyloid aggregation as able to affect protein structure and dynamics. Among them, a key role seems to be played by non-enzymatic glycation, the most unwanted irreversible modification of the protein structure, which strongly affects long-living proteins throughout the body. This study provided an overview of the molecular effects induced by glycation on the amyloid aggregation process of several protein models associated with misfolding diseases. In particular, we analyzed the role of glycation on protein folding, kinetics of amyloid formation, and amyloid cytotoxicity in order to shed light on the role of this post-translational modification in the in vivo amyloid aggregation process.
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30
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Ghadami SA, Ahmadi Z, Moosavi-Nejad Z. The albumin-based nanoparticle formation in relation to protein aggregation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 252:119489. [PMID: 33524819 DOI: 10.1016/j.saa.2021.119489] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Albumin is an attractive protein for the preparation of nanoparticle with possible therapeutic applications, due to its biodegradable, nontoxic, non-immunogenic, and metabolizable properties. Many studies have investigated the formation of albumin nanoparticles, generally by the desolvation or coacervation approaches. One of the most important parameters that should be considered in the formation of nanoparticles is their morphology (size and shape). There are many proposals to control the nanoparticle size, but it remains a challenge for researchers yet. In this study, we showed that control of BSA-based nanoparticles/microparticles size could be achieved by varying the temperature and pH and therefore controlling the rate of aggregation. The aggregation behavior was monitored by UV-Vis spectroscopy, SEM, and dye-binding assay. Our results provide more options for the size and shape control of BSA-based nanoparticle in natural buffer systems. The aggregation of BSA at different temperatures within the range of 50-80 °C were studied under the effect of different pHs in the range of 4.7-6.2. In this research, we found that protein aggregation under extreme conditions of pH and temperature, or at the pH near to pI appears to be amorphous, and at the pH above the pI seems to be the amyloid fibril structure. In some instances where the aggregation is neither too fast nor too slow, in the initial phase of the aggregation process, nanoparticle structures can be identified and separated by mechanistic approaches. This observation suggests that the best condition for monitoring the formation of albumin-based nanoparticles could be pH 5.7, 70 °C. Satisfactory rationalization of all aspects of our experimental observation requires further and more detailed study.
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Affiliation(s)
| | - Zahra Ahmadi
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Zahra Moosavi-Nejad
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran.
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31
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Heat-induced self-assembling of BSA at the isoelectric point. Int J Biol Macromol 2021; 177:40-47. [PMID: 33607130 DOI: 10.1016/j.ijbiomac.2021.02.112] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/05/2021] [Accepted: 02/15/2021] [Indexed: 11/21/2022]
Abstract
Materials based on ordered protein aggregates have recently received a lot of attention for their application as drug carriers, due to their biocompatibility and their ability to sequester many biological fluids. Bovine serum albumin (BSA) is a good candidate for this use due to its high availability and tendency to aggregate and gel under acidic conditions. In the present work, we employ spectroscopic techniques to investigate the heat-induced BSA aggregation at the molecular scale, in the 12-84 °C temperature range, at pH = 5 where two different isoforms of the protein are stable. Samples at low and high protein concentration are examined. With the advantage of the combined use of FTIR and CD, we recognize the aggregation-prone species and the different distribution of secondary structures, conformational rearrangements and types of aggregates, of millimolar compared to micromolar BSA solutions. Further, as a new tool, we use the Maximum Entropy Method to fit the kinetic curves to investigate the distribution of kinetic constants of the complex hierarchical aggregation process. Finally, we characterize the activation energy of the initial self-assembling step to observe that the formation of both small and large aggregates is driven by the same interactions.
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32
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Pyne P, Samanta N, Gohil H, Prabhu SS, Mitra RK. Alteration of water absorption in the THz region traces the onset of fibrillation in proteins. Chem Commun (Camb) 2021; 57:998-1001. [PMID: 33399590 DOI: 10.1039/d0cc06500e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using terahertz spectroscopy, we established the alteration of the collective hydration of water during the fibrillation process (native → intermediate → fibril) of a model protein bovine serum albumin. This label-free study concludes that water dynamics change systematically with protein conformational changes as it experiences a hydrophobic environment during the initial protein unfolding process, followed by the release of bound water during oligomerization and finally the hydrophobic interior of the fibril.
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Affiliation(s)
- Partha Pyne
- Department of Chemical, Biological & Macro-Molecular Sciences, Satyendra Nath Bose National Centre for Basic Sciences, Block-JD; Sector-III; Salt Lake, Kolkata-700106, India.
| | - Nirnay Samanta
- Department of Chemical, Biological & Macro-Molecular Sciences, Satyendra Nath Bose National Centre for Basic Sciences, Block-JD; Sector-III; Salt Lake, Kolkata-700106, India. and Institute for Physical and Theoretical Chemistry, TU Braunschweig, 38106 Braunschweig, Germany
| | - Himanshu Gohil
- Department of Condensed Matter Physics And Material Science, Tata Institute of Fundamental Research, Homi Bhahba Road, Colaba, Mumbai-400005, India.
| | - S S Prabhu
- Department of Condensed Matter Physics And Material Science, Tata Institute of Fundamental Research, Homi Bhahba Road, Colaba, Mumbai-400005, India.
| | - Rajib Kumar Mitra
- Department of Chemical, Biological & Macro-Molecular Sciences, Satyendra Nath Bose National Centre for Basic Sciences, Block-JD; Sector-III; Salt Lake, Kolkata-700106, India.
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33
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Thorn DC, Bahraminejad E, Grosas AB, Koudelka T, Hoffmann P, Mata JP, Devlin GL, Sunde M, Ecroyd H, Holt C, Carver JA. Native disulphide-linked dimers facilitate amyloid fibril formation by bovine milk α S2-casein. Biophys Chem 2020; 270:106530. [PMID: 33545456 DOI: 10.1016/j.bpc.2020.106530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/12/2020] [Accepted: 12/12/2020] [Indexed: 12/22/2022]
Abstract
Bovine milk αS2-casein, an intrinsically disordered protein, readily forms amyloid fibrils in vitro and is implicated in the formation of amyloid fibril deposits in mammary tissue. Its two cysteine residues participate in the formation of either intra- or intermolecular disulphide bonds, generating monomer and dimer species. X-ray solution scattering measurements indicated that both forms of the protein adopt large, spherical oligomers at 20 °C. Upon incubation at 37 °C, the disulphide-linked dimer showed a significantly greater propensity to form amyloid fibrils than its monomeric counterpart. Thioflavin T fluorescence, circular dichroism and infrared spectra were consistent with one or both of the dimer isomers (in a parallel or antiparallel arrangement) being predisposed toward an ordered, amyloid-like structure. Limited proteolysis experiments indicated that the region from Ala81 to Lys113 is incorporated into the fibril core, implying that this region, which is predicted by several algorithms to be amyloidogenic, initiates fibril formation of αS2-casein. The partial conservation of the cysteine motif and the frequent occurrence of disulphide-linked dimers in mammalian milks despite the associated risk of mammary amyloidosis, suggest that the dimeric conformation of αS2-casein is a functional, yet amyloidogenic, structure.
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Affiliation(s)
- David C Thorn
- Research School of Chemistry, The Australian National University, Acton, ACT 2601, Australia
| | - Elmira Bahraminejad
- Research School of Chemistry, The Australian National University, Acton, ACT 2601, Australia
| | - Aidan B Grosas
- Research School of Chemistry, The Australian National University, Acton, ACT 2601, Australia
| | - Tomas Koudelka
- Institute of Experimental Medicine, University of Kiel, Kiel 24105, Germany
| | - Peter Hoffmann
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Jitendra P Mata
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW 2234, Australia
| | - Glyn L Devlin
- Victorian Health and Human Services Building Authority, Melbourne, Victoria 3000, Australia
| | - Margaret Sunde
- Discipline of Pharmacology, School of Medical Sciences, Faculty of Medicine and Health and Sydney Nano, University of Sydney, Sydney, NSW 2006, Australia
| | - Heath Ecroyd
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong and Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Carl Holt
- Institute of Molecular, Cell & Systems Biology, University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - John A Carver
- Research School of Chemistry, The Australian National University, Acton, ACT 2601, Australia.
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34
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Esackimuthu P, Saraswathi NT. Non enzymatic covalent modification by glycolysis end product converts hemoglobin into its oxidative stress potency state. Biochem Biophys Res Commun 2020; 534:387-394. [PMID: 33261885 DOI: 10.1016/j.bbrc.2020.11.072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 11/19/2020] [Indexed: 11/25/2022]
Abstract
The effect of glycation by Pyruvic acid (PA) on the early and advanced conformational changes in Hemoglobin (Hb) was studied. Multi Spectroscopic measurement revealed that Hb undergoes structural conformational changes and unbound heme upon incubation with PA. These covalent modifications were followed by the reduction of heme centre and these reduction processes initiates its peroxidase-like activity. An extended PA glycation resulted in the appearance of advanced glycation end products fluorescence, with notable changes in compositions of secondary structure. The amyloidogenic state was confirmed by SEM, fluorescence microscope observation. This study reveals an insight to the role of pyruvic acid which increases the oxidative stress due to the heme reduction and diabetic complication.
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Affiliation(s)
- P Esackimuthu
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA Deemed To Be University, Thanjavur, 613401, Tamilnadu, India
| | - N T Saraswathi
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA Deemed To Be University, Thanjavur, 613401, Tamilnadu, India.
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35
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Pignataro MF, Herrera MG, Dodero VI. Evaluation of Peptide/Protein Self-Assembly and Aggregation by Spectroscopic Methods. Molecules 2020; 25:E4854. [PMID: 33096797 PMCID: PMC7587993 DOI: 10.3390/molecules25204854] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/17/2020] [Accepted: 10/19/2020] [Indexed: 01/08/2023] Open
Abstract
The self-assembly of proteins is an essential process for a variety of cellular functions including cell respiration, mobility and division. On the other hand, protein or peptide misfolding and aggregation is related to the development of Parkinson's disease and Alzheimer's disease, among other aggregopathies. As a consequence, significant research efforts are directed towards the understanding of this process. In this review, we are focused on the use of UV-Visible Absorption Spectroscopy, Fluorescence Spectroscopy and Circular Dichroism to evaluate the self-organization of proteins and peptides in solution. These spectroscopic techniques are commonly available in most chemistry and biochemistry research laboratories, and together they are a powerful approach for initial as well as routine evaluation of protein and peptide self-assembly and aggregation under different environmental stimulus. Furthermore, these spectroscopic techniques are even suitable for studying complex systems like those in the food industry or pharmaceutical formulations, providing an overall idea of the folding, self-assembly, and aggregation processes, which is challenging to obtain with high-resolution methods. Here, we compiled and discussed selected examples, together with our results and those that helped us better to understand the process of protein and peptide aggregation. We put particular emphasis on the basic description of the methods as well as on the experimental considerations needed to obtain meaningful information, to help those who are just getting into this exciting area of research. Moreover, this review is particularly useful to those out of the field who would like to improve reproducibility in their cellular and biomedical experiments, especially while working with peptide and protein systems as an external stimulus. Our final aim is to show the power of these low-resolution techniques to improve our understanding of the self-assembly of peptides and proteins and translate this fundamental knowledge in biomedical research or food applications.
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Affiliation(s)
- María Florencia Pignataro
- Department of Physiology and Molecular and Cellular Biology, Institute of Biosciences, Biotechnology and Translational Biology (iB3), Faculty of Exact and Natural Sciences, University of Buenos Aires, Buenos Aires C1428EG, Argentina;
- Institute of Biological Chemistry and Physical Chemistry, Dr. Alejandro Paladini, University of Buenos Aires-CONICET, Buenos Aires C1113AAD, Argentina
| | - María Georgina Herrera
- Department of Physiology and Molecular and Cellular Biology, Institute of Biosciences, Biotechnology and Translational Biology (iB3), Faculty of Exact and Natural Sciences, University of Buenos Aires, Buenos Aires C1428EG, Argentina;
- Institute of Biological Chemistry and Physical Chemistry, Dr. Alejandro Paladini, University of Buenos Aires-CONICET, Buenos Aires C1113AAD, Argentina
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, 33615 Bielefeld, Germany
| | - Verónica Isabel Dodero
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, 33615 Bielefeld, Germany
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Ghosh R, Kishore N. Physicochemical Insights into the Role of Drug Functionality in Fibrillation Inhibition of Bovine Serum Albumin. J Phys Chem B 2020; 124:8989-9008. [DOI: 10.1021/acs.jpcb.0c06167] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ritutama Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Nand Kishore
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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Zhao D, Sheng B, Li H, Wu Y, Xu D, Li C. Glycation from α-dicarbonyl compounds has different effects on the heat-induced aggregation of bovine serum albumin and β-casein. Food Chem 2020; 340:128108. [PMID: 33010643 DOI: 10.1016/j.foodchem.2020.128108] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 08/24/2020] [Accepted: 09/12/2020] [Indexed: 10/23/2022]
Abstract
α-Dicarbonyl compounds are generated in large amounts during heat treatment in food production. This work compared the influence of glycation by α-dicarbonyl on the hydrothermal aggregation of bovine serum albumin (BSA) and of β-casein (β-CN). Glycation by α-dicarbonyl compounds was found to be more efficient than glycation by glucose in reducing the free amino groups, surface hydrophobicity and isoelectric point of BSA, thus greatly inhibited the hydrothermal aggregation of BSA. In addition, glycation by α-dicarbonyl greatly transformed the rigid BSA aggregates into flexible structures, based on analysis by fluorescence spectrum, transmission electron microscope and small-angle X-ray scattering. In contrast, both the aggregation process and aggregates conformation of β-CN were found to be minimally affected by glycation, possibly due to the intrinsic disorder of β-CN. This work highlights the substantial influences of α-dicarbonyl on dietary proteins during heat treatment depending on the protein structural characteristics.
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Affiliation(s)
- Di Zhao
- Key Laboratory of Meat Processing, MOA, Key Laboratory of Meat Processing and Quality Control, MOE, Jiang Synergetic Innovation Center of Meat Production, Processing and Quality Control, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Bulei Sheng
- Department of Food Science, Aarhus University, Blichers Allé 20, Tjele 8830, Denmark
| | - Hao Li
- Key Laboratory of Meat Processing, MOA, Key Laboratory of Meat Processing and Quality Control, MOE, Jiang Synergetic Innovation Center of Meat Production, Processing and Quality Control, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yi Wu
- College of Food Science and Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Dan Xu
- College of Food Science and Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Chunbao Li
- Key Laboratory of Meat Processing, MOA, Key Laboratory of Meat Processing and Quality Control, MOE, Jiang Synergetic Innovation Center of Meat Production, Processing and Quality Control, Nanjing Agricultural University, Nanjing 210095, PR China
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Matsarskaia O, Bühl L, Beck C, Grimaldo M, Schweins R, Zhang F, Seydel T, Schreiber F, Roosen-Runge F. Evolution of the structure and dynamics of bovine serum albumin induced by thermal denaturation. Phys Chem Chem Phys 2020; 22:18507-18517. [PMID: 32780038 DOI: 10.1039/d0cp01857k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Protein denaturation in concentrated solutions consists of the unfolding of the native protein structure, and subsequent cross-linking into clusters or gel networks. While the kinetic evolution of structure has been studied for some cases, the underlying microscopic dynamics of proteins has so far been neglected. However, protein dynamics is essential to understand the specific nature of assembly processes, such as diffusion-limited growth, or vitrification of dense liquids. Here, we present a study on thermal denaturation of concentrated solutions of bovine serum albumin (BSA) in D2O with and without NaCl. Using small-angle scattering, we provide information on structure before, during and after denaturation. Using quasi-elastic neutron scattering, we monitor in real-time the microscopic dynamics and dynamical confinement throughout the entire denaturation process covering protein unfolding and cross-linking. After denaturation, the protein dynamics is slowed down in salty solutions compared to those in pure water, while the stability and dynamics of the native solution appears unaffected by salt. The approach presented here opens opportunities to link microscopic dynamics to emerging structural properties, with implications for assembly processes in soft and biological matter.
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Affiliation(s)
- Olga Matsarskaia
- Institut Laue-Langevin, 71 Avenue des Martyrs, 38042 Grenoble, France.
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Das A, Basak P, Pramanik A, Majumder R, Ghosh A, Hazra S, Guria M, Bhattacharyya M, Banik SP. Ribosylation induced structural changes in Bovine Serum Albumin: understanding high dietary sugar induced protein aggregation and amyloid formation. Heliyon 2020; 6:e05053. [PMID: 33015393 PMCID: PMC7522498 DOI: 10.1016/j.heliyon.2020.e05053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/28/2020] [Accepted: 09/21/2020] [Indexed: 10/31/2022] Open
Abstract
Non-enzymatic glycation of proteins is believed to be the root cause of high dietary sugar associated pathophysiological maladies. We investigated the structural changes in protein during progression of glycation using ribosylated Bovine Serum Albumin (BSA). Non enzymatic attachment of about 45 ribose molecules to BSA resulted in gradual reduction of hydrophobicity and aggregation as indicated by red-shifted tryptophan fluorescence, reduced ANS binding and lower anisotropy of FITC-conjugated protein. Parallely, there was a significant decrease of alpha helicity as revealed by Circular Dichroism (CD) and Fourier transformed-Infra Red (FT-IR) spectra. The glycated proteins assumed compact globular structures with enhanced Thioflavin-T binding resembling amyloids. The gross structural transition affected by ribosylation led to enhanced thermostability as indicated by melting temperature and Transmission Electron Microscopy. At a later stage of glycation, the glycated proteins developed non-specific aggregates with increase in size and loss of amyloidogenic behaviour. A parallel non-glycated control incubated under similar conditions indicated that amyloid formation and associated changes were specific for ribosylation and not driven by thermal denaturation due to incubation at 37 °C. Functionality of the glycated protein was significantly altered as probed by Isothermal Titration Calorimetry using polyphenols as substrates. The studies demonstrated that glycation driven globular amyloids form and persist as transient intermediates during formation of misfolded glycated adducts. To the best of our knowledge, the present study is the first systematic attempt to understand glycation associated changes in a protein and provides important insights towards designing therapeutics for arresting dietary sugar induced amyloid formation.
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Affiliation(s)
- Ahana Das
- Department of Microbiology, Maulana Azad College, 8 Rafi Ahmed Kidwai Road, Kolkata 700013, West Bengal, India
| | - Pijush Basak
- Jagadis Bose National Science Talent Search, 1300, Rajdanga Main Road, Sector C, East Kolkata Township, Kolkata 700107, West Bengal, India
| | - Arnab Pramanik
- Jagadis Bose National Science Talent Search, 1300, Rajdanga Main Road, Sector C, East Kolkata Township, Kolkata 700107, West Bengal, India
| | - Rajib Majumder
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Kolkata 700126, West Bengal, India
| | - Avishek Ghosh
- Department of Microbiology, Maulana Azad College, 8 Rafi Ahmed Kidwai Road, Kolkata 700013, West Bengal, India
| | - Saugata Hazra
- Department of Biotechnology, Centre for Nanotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
| | - Manas Guria
- Department of Biochemistry, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, West Bengal, India
| | - Maitree Bhattacharyya
- Jagadis Bose National Science Talent Search, 1300, Rajdanga Main Road, Sector C, East Kolkata Township, Kolkata 700107, West Bengal, India
| | - Samudra Prosad Banik
- Department of Microbiology, Maulana Azad College, 8 Rafi Ahmed Kidwai Road, Kolkata 700013, West Bengal, India
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Huo XZ, Wang X, Yang R, Qu LB, Zeng HJ. Studies on the effect of a Fupenzi glycoprotein on the fibrillation of bovine serum albumin and its antioxidant activity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 237:118387. [PMID: 32416513 DOI: 10.1016/j.saa.2020.118387] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 02/04/2020] [Accepted: 04/18/2020] [Indexed: 06/11/2023]
Abstract
In this study, the effect of a glycoprotein obtained from Fupenzi (FPZ) (Rubus chingii Hu.) on the fibrillation of bovine serum album (BSA) was investigated by multi-spectroscopic methods and transmission electron microscopy. Moreover, the cytotoxicity of the glycoprotein and the effect of it on H2O2-induced cell viability were investigated by cell counting kit and β-galactosidase kit, respectively. The experimental results indicated that the glycoprotein showed very low toxicity to NRK-52E cells and could obviously delay cell senescence and improve cell viability. Moreover, the glycoprotein could effectively inhibit the formation of BSA fibrils and destroy the stability of preformed BSA fibrils in a concentration-dependent manner. Generally, antioxidant capacities are thought to be related to the anti-amyloidogenic activity of inhibitors; therefore, to reveal the inhibitory mechanism, the anti-oxidative property of the glycoprotein was examined by DPPH and ABTS assays. The results demonstrated that FPZ glycoprotein had a remarkable antioxidant activity and the IC50 values of DPPH and ABTS were 0.249 mg mL-1 and 0.092 mg mL-1, respectively. This work suggested that the FPZ glycoprotein had the potential to be designed a new therapeutic agent for attenuating aging and preventing the age-related diseases.
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Affiliation(s)
- Xiu-Zhu Huo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Xia Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ran Yang
- College of Chemistry, Green Catalysis Center, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ling-Bo Qu
- College of Chemistry, Green Catalysis Center, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou University, Zhengzhou 450001, PR China
| | - Hua-Jin Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China.
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Scanavachi G, Espinosa Y, Yoneda J, Rial R, Ruso J, Itri R. Aggregation features of partially unfolded bovine serum albumin modulated by hydrogenated and fluorinated surfactants: Molecular dynamics insights and experimental approaches. J Colloid Interface Sci 2020; 572:9-21. [DOI: 10.1016/j.jcis.2020.03.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 01/25/2023]
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Xu D, Li L, Wu Y, Zhang X, Wu M, Li Y, Gai Z, Li B, Zhao D, Li C. Influence of ultrasound pretreatment on the subsequent glycation of dietary proteins. ULTRASONICS SONOCHEMISTRY 2020; 63:104910. [PMID: 31945554 DOI: 10.1016/j.ultsonch.2019.104910] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 11/07/2019] [Accepted: 11/26/2019] [Indexed: 06/10/2023]
Abstract
The influence of ultrasound treatment on the subsequent glycation process of proteins is controversial. Glycation behaviors of bovine serum albumin (BSA), β-lactoglobulin (β-Lg) and β-casein (β-CN) after ultrasound pretreatment (UP) were compared by both evaluating glycation kinetics and analyzing structural changes of proteins. UP resulted in both unfolding and aggregation behavior in protein samples, which altered the accessibility of the Lys and Arg. Five cycles of UP up-regulated the glycation degree of BSA and β-Lg, possibly due to the unfolding behavior induced by UP, which exposed additional glycation sites. In contrast, 30 cycles of UP induced a dramatic increase (by 97.9 nm) in particle size of BSA, thus burying portions of glycation sites and suppressing the glycation process. Notably, UP had minimal influence on glycation kinetics of β-CN, due to its intrinsic disordered structure. Based on proteomics analysis, the preference of Lys and Arg during glycation was found to be changed by UP in BSA and β-Lg. Four, 3 and 3 unique carboxyethylated lysine residues were identified in glycated BSA after 0, 5 and 30 cycles of UP, respectively. This study suggests that the protein glycation can be affected by UP, depending on the ultrasonication duration and native structure of the protein.
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Affiliation(s)
- Dan Xu
- College of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Lin Li
- College of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China; School of Chemical Engineering and Energy Technology, Dongguan University of Technology, College Road 1, Dongguan 523808, China
| | - Yi Wu
- College of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Xia Zhang
- College of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Ming Wu
- College of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Yuting Li
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, College Road 1, Dongguan 523808, China
| | - Zuoqi Gai
- College of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Bing Li
- College of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China.
| | - Di Zhao
- Key Laboratory of Meat Processing and Quality Control, MOE, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Key Laboratory of Meat Products Processing, MOA, Nanjing Agricultural University, Nanjing 210095, China.
| | - Chunbao Li
- Key Laboratory of Meat Processing and Quality Control, MOE, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Key Laboratory of Meat Products Processing, MOA, Nanjing Agricultural University, Nanjing 210095, China
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43
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Breedlove S, Crentsil J, Dahal E, Badano A. Small-angle X-ray scattering characterization of a [Formula: see text]-amyloid model in phantoms. BMC Res Notes 2020; 13:128. [PMID: 32131889 PMCID: PMC7057533 DOI: 10.1186/s13104-020-04969-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 02/21/2020] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE We present a method to prepare an amyloid model at scalable quantities for phantom studies to evaluate small-angle x-ray scattering systems for amyloid detection. Two amyloid models were made from a plasma protein with and without heating. Both models mimic the [Formula: see text]-sheet structure of the [Formula: see text]-amyloid ([Formula: see text]) plaques in Alzheimer's disease. Amyloid detection is based on the distinct peaks in the scattering signature of the [Formula: see text]-sheet structure. We characterized the amyloid models using a spectral small-angle x-ray scattering (sSAXS) prototype with samples in a plastic syringe and within a cylindrical polymethyl methacrylate (PMMA) phantom. RESULTS sSAXS data show that we can detect the scattering peaks characteristic of amyloid [Formula: see text]-sheet structure in both models around 6 and 13 [Formula: see text]. The [Formula: see text] model prepared without heating provides a stronger signal in the PMMA phantom. The methods described can be used to prepare models in sufficiently large quantities and used in samples with different packing density to assess the performance of [Formula: see text] quantification systems.
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Affiliation(s)
- Sophya Breedlove
- Division of Imaging, Diagnostics, and Software Reliability, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, Food and Drug Administration, Silver Spring, MD USA
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA USA
| | - Jasson Crentsil
- Division of Imaging, Diagnostics, and Software Reliability, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, Food and Drug Administration, Silver Spring, MD USA
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD USA
| | - Eshan Dahal
- Division of Imaging, Diagnostics, and Software Reliability, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, Food and Drug Administration, Silver Spring, MD USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD USA
| | - Aldo Badano
- Division of Imaging, Diagnostics, and Software Reliability, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, Food and Drug Administration, Silver Spring, MD USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD USA
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44
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Masroor A, Zaidi N, Chandel TI, Aqueel Z, Malik S, Khan RH. Probing the Nongeneralized Amyloid Inhibitory Mechanism of Hydrophobic Chaperone. ACS Chem Neurosci 2020; 11:373-384. [PMID: 31935057 DOI: 10.1021/acschemneuro.9b00593] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Increasing prevalence of protein misfolding disorders urges the search for effective therapies. Although several antiaggregation molecules have been identified, their molecular process of aggregation and clinical trials are underway. The present study is focused on the mechanism through which phenyl butyrate (PB), a chemical chaperone, triggers inhibition of human serum albumin (HSA) fibrillation. Turbidity and Rayleigh light scattering (RLS) measurements reveal the marked presence of aggregates in HSA that were confirmed as amyloid fibrils by thioflavin T (ThT) and Congo red (CR) and were subsequently inhibited by PB in a dose dependent manner. ThT fluorescence kinetics reveals a decrease in the apparent rate constant, Kapp, in the presence of PB without triggering a lag phase in HSA suggesting PB's interference with the elongation phase. Dynamic light scattering (DLS) results display a reduction in the aggregate size in the presence of PB. Isothermal titration calorimetry (ITC) data reveals strong binding of PB at site II both at 25 °C (Kb ≈ 1.94 × 105 M-1) and 65 °C (Kb ≈ 2.90 × 104 M-1), mediated by hydrogen bonding. Overall, our finding establishes that PB stabilizes partially unfolded HSA molecules through hydrogen bonding, thereby preventing establishment of hydrogen bonds between them and hindering their progression into amyloid fibrils. This is in contrast to its chaperone effect manifested with other proteins.
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Affiliation(s)
- Aiman Masroor
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Nida Zaidi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Tajalli Ilm Chandel
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Zoha Aqueel
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Sadia Malik
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
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45
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Giannousi K, Geromichalos G, Kakolyri D, Mourdikoudis S, Dendrinou-Samara C. Interaction of ZnO Nanostructures with Proteins: In Vitro Fibrillation/Antifibrillation Studies and in Silico Molecular Docking Simulations. ACS Chem Neurosci 2020; 11:436-444. [PMID: 31904211 DOI: 10.1021/acschemneuro.9b00642] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Protein amyloidosis is related to many neurological disorders. Nanoparticles (NPs) due to their small size can regulate both the polypeptide monomers/oligomers assembly into amyloid fibrils/plaques and the disintegration of the existent plaques. Herein, we have synthesized ZnO nanoflowers and polyol-coated ZnO NPs of relatively small size (40 nm) with cylindrical shape, through solvothermal and microwave-assisted routes, respectively. The effect of the different morphology of nanostructures on the fibrillation/antifibrillation process was monitored in bovine serum albumin (BSA) and human insulin (HI) by fluorescence Thioflavin T (ThT) measurements. Although both nanomaterials affected the amyloid formation mechanism as well as their disaggregation, ZnO nanoflowers with their sharp edges exhibited the greatest amyloid degradation rate in both model proteins (73% and 35%, respectively) and inhibited the most the insulin fibril growth, while restrained also the fibrillation process in the case of albumin solution. In silico molecular docking simulations on the crystal structure of BSA and HI were performed to analyze further the observed in vitro activity of ZnO nanostructures. The binding energy of ZnO NPs was found lower for BSA (-5.44), highlighting their ability to act as catalysts in the fibrillation process of albumin monomers.
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Affiliation(s)
- Kleoniki Giannousi
- Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - George Geromichalos
- Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Dionysia Kakolyri
- Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Stefanos Mourdikoudis
- UCL Healthcare Biomagnetic and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, United Kingdom
- Biophysics Group, Department of Physics and Astronomy, University College London (UCL), London WC1E 6BT, United Kingdom
| | - Catherine Dendrinou-Samara
- Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
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Maciążek-Jurczyk M, Janas K, Pożycka J, Szkudlarek A, Rogóż W, Owczarzy A, Kulig K. Human Serum Albumin Aggregation/Fibrillation and its Abilities to Drugs Binding. Molecules 2020; 25:molecules25030618. [PMID: 32023900 PMCID: PMC7038104 DOI: 10.3390/molecules25030618] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 01/23/2020] [Accepted: 01/29/2020] [Indexed: 02/07/2023] Open
Abstract
Human serum albumin (HSA) is a protein that transports neutral and acid ligands in the organism. Depending on the environment's pH conditions, HSA can take one of the five isomeric forms that change its conformation. HSA can form aggregates resembling those in vitro formed from amyloid at physiological pH (neutral and acidic). Not surprisingly, the main goal of the research was aggregation/fibrillation of HSA, the study of the physicochemical properties of formed amyloid fibrils using thioflavin T (ThT) and the analysis of ligand binding to aggregated/fibrillated albumin in the presence of dansyl-l-glutamine (dGlu), dansyl-l-proline (dPro), phenylbutazone (Phb) and ketoprofen (Ket). Solutions of human serum albumin, both non-modified and modified, were examined with the use of fluorescence, absorption and circular dichroism (CD) spectroscopy. The experiments conducted allowed observation of changes in the structure of incubated HSA (HSAINC) in relation to nonmodified HSA (HSAFR). The formed aggregates/fibrillation differed in structure from HSA monomers and dimers. Based on CD spectroscopy, previously absent βstructural constructs have been registered. Whereas, using fluorescence spectroscopy, the association constants differing for fresh and incubated HSA solutions in the presence of dansyl-amino acids and markers for binding sites were calculated and allowed observation of the conformational changes in HSA molecule.
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Affiliation(s)
- Małgorzata Maciążek-Jurczyk
- Department of Physical Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland; (K.J.); (J.P.); (A.S.); (W.R.); (K.K.)
- Correspondence: ; Tel.: +48-32-364-1582
| | - Kamil Janas
- Department of Physical Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland; (K.J.); (J.P.); (A.S.); (W.R.); (K.K.)
| | - Jadwiga Pożycka
- Department of Physical Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland; (K.J.); (J.P.); (A.S.); (W.R.); (K.K.)
| | - Agnieszka Szkudlarek
- Department of Physical Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland; (K.J.); (J.P.); (A.S.); (W.R.); (K.K.)
| | - Wojciech Rogóż
- Department of Physical Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland; (K.J.); (J.P.); (A.S.); (W.R.); (K.K.)
| | - Aleksandra Owczarzy
- Independent Public Clinical Hospital No. 1 in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland;
| | - Karolina Kulig
- Department of Physical Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland; (K.J.); (J.P.); (A.S.); (W.R.); (K.K.)
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47
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Application of preheating treatment in up- and down-regulating the glycation process of dietary proteins. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105264] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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48
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Sabaté Del Río J, Henry OYF, Jolly P, Ingber DE. An antifouling coating that enables affinity-based electrochemical biosensing in complex biological fluids. NATURE NANOTECHNOLOGY 2019; 14:1143-1149. [PMID: 31712665 DOI: 10.1038/s41565-019-0566-z] [Citation(s) in RCA: 199] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 10/01/2019] [Indexed: 05/21/2023]
Abstract
Affinity-based electrochemical detection in complex biological fluids could enable multiplexed point-of-care diagnostics for home healthcare; however, commercialization of point-of-care devices has been limited by the rapid loss of sensitivity caused by electrode surface inactivation and biofouling. Here, we describe a simple and robust antifouling coating for electrodes consisting of a three-dimensional porous matrix of cross-linked bovine serum albumin supported by a network of conductive nanomaterials composed of either gold nanowires, gold nanoparticles or carbon nanotubes. These nanocomposites prevent non-specific interactions while enhancing electron transfer to the electrode surface, preserving 88% of the original signal after 1 month of exposure to unprocessed human plasma, and functionalization with specific antibodies enables quantification of anti-interleukin 6 in plasma with high sensitivity. The easy preparation, stability and simplicity of this nanocomposite allow the generation of electrochemical biosensors that can operate in complex biological fluids such as blood plasma or serum.
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Affiliation(s)
- Jonathan Sabaté Del Río
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
- Center for Soft and Living Matter, Institute for Basic Science, Ulsan, Republic of Korea
| | - Olivier Y F Henry
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
- Imec, Leuven, Belgium
| | - Pawan Jolly
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
| | - Donald E Ingber
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA.
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.
- Vascular Biology Program and Department of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA.
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Devitt G, Rice W, Crisford A, Nandhakumar I, Mudher A, Mahajan S. Conformational Evolution of Molecular Signatures during Amyloidogenic Protein Aggregation. ACS Chem Neurosci 2019; 10:4593-4611. [PMID: 31661242 DOI: 10.1021/acschemneuro.9b00451] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Aggregation is a pathological hallmark of proteinopathies such as Alzheimer's disease and results in the deposition of β-sheet-rich amyloidogenic protein aggregates. Such proteinopathies can be classified by the identity of one or more aggregated proteins, with recent evidence also suggesting that distinct molecular conformers (strains) of the same protein can be observed in different diseases, as well is in subtypes of the same disease. Therefore, methods for the quantification of pathological changes in protein conformation are central to understanding and treating proteinopathies. In this work, the evolution of Raman spectroscopic molecular signatures of three conformationally distinct proteins, bovine serum albumin (α-helical-rich), β2-microglobulin (β-sheet-rich), and tau (natively disordered), was assessed during aggregation into oligomers and fibrils. The morphological evolution was tracked using atomic force microscopy and corresponding conformational changes were assessed by their Raman signatures acquired in both wet and dried conditions. A deconvolution model was developed which allowed us to quantify the conformation of the nonregular protein tau, as well as for the oligomeric and fibrillar species of each of the proteins. Principle component analysis of the fingerprint region allowed further identification of the distinguishing spectral features and unsupervised distinction. While an increase in β-sheet is seen on aggregation, crucially, however, each protein also retains a significant proportion of its native monomeric structure after aggregation. Thus, spectral analysis of each aggregated species, oligomeric, as well as fibrillar, for each protein resulted in a unique and quantitative "conformational fingerprint". This approach allowed us to provide the first differential detection of both oligomers and fibrils of the three different amyloidogenic proteins, including tau, whose aggregates have never before been interrogated using spontaneous Raman spectroscopy. Quantitative "conformational fingerprinting" by Raman spectroscopy thus demonstrates its huge potential and utility in understanding proteinopathic disease mechanisms and for providing strain-specific early diagnostic markers and targets for disease-modifying therapies.
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Yang H, Wang M, Zhang Y, Liu X, Yu S, Guo Y, Yang S, Yang L. Detailed insight into the formation of protein corona: Conformational change, stability and aggregation. Int J Biol Macromol 2019; 135:1114-1122. [DOI: 10.1016/j.ijbiomac.2019.06.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 04/25/2019] [Accepted: 06/03/2019] [Indexed: 01/22/2023]
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