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Kawabe H, Ikawa S, Kitano K, Zako T. Peroxynitric acid inhibits amyloid β aggregation. Biochem Biophys Res Commun 2023; 660:1-5. [PMID: 37058842 DOI: 10.1016/j.bbrc.2023.03.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 03/24/2023] [Indexed: 04/08/2023]
Abstract
Peroxynitric acid (PNA), a reactive oxygen nitrogen species, has attracted attention in life science because of its unique properties such as high bacteriacidal activity. Since the bactericidal activity of PNA could be related to its reaction with amino acid residues, we speculate that PNA can be used for protein modifications. In this study, PNA was applied to inhibit aggregation of amyloid β1-42 (Aβ42), which is thought to cause Alzheimer's disease (AD). We demonstrated for the first time that PNA could inhibit the aggregation and cytotoxicity of Aβ42. Since PNA could inhibit aggregation of other amyloidogenic proteins such as amylin and insulin, our study shed a light on a novel strategy for the prevention of various diseases caused by amyloids.
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Affiliation(s)
- Haruka Kawabe
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo, Matsuyama, Ehime, 790-8577, Japan
| | - Satoshi Ikawa
- Osaka Research Institute of Industrial Science and Technology, 2-7-1 Ayumino, Izumi, 594-1157, Japan
| | - Katsuhisa Kitano
- Center for Atomic and Molecular Technologies, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, 565-0871, Japan
| | - Tamotsu Zako
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo, Matsuyama, Ehime, 790-8577, Japan.
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2
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ZnO NPs immobilized by Alizarin as in vitro predictive and imaging biomarkers for protein amyloidosis. J Inorg Biochem 2022; 236:111971. [PMID: 36049260 DOI: 10.1016/j.jinorgbio.2022.111971] [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: 05/27/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 12/15/2022]
Abstract
Protein amyloidosis represents the main pathological hallmark of many incurable neurodegenerative disorders and protein misfolding diseases. Nanomaterials-based approaches give rise to diagnosis and/or prediction of these proteinopathies, with regards to the multifactorial nature of their pathogenesis. Herein, crystalline truncated hexagonal shaped naked ZnO nanoparticles (mean value 47.4 nm) have been solvothermally prepared and immobilized further with alizarin (Alzn) molecules (54%) to stand up to amyloidosis acting both as inhibitors and imaging agents, as well as antioxidants. Thioflavin-T (ThT) assay revealed that the resulted zinc oxide nanoparticles immobilized with alizarin (ZnO@Alzn NPs) inhibited in vitro insulin amyloids formation in a dose-dependent manner, while the kinetic mechanism of the phenomenon was recorded. In parallel, amyloid oligomers and plaques have been visualized by conventional optical microscopy upon protein co-incubation with ZnO@Alzn NPs, highlighting the imaging ability of the immobilized NPs. The antioxidant activity was monitored by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, through which it was shown that alizarin incorporation onto the inorganic core leads to the reduction of IC50 values from 221 μg/mL to 167 μg/mL. The enhanced free radical scavenging effects of ZnO@Alzn compared to the naked-ZnO NPs, features their prospect to serve additional functions.
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Just MK, Gram H, Theologidis V, Jensen PH, Nilsson KPR, Lindgren M, Knudsen K, Borghammer P, Van Den Berge N. Alpha-Synuclein Strain Variability in Body-First and Brain-First Synucleinopathies. Front Aging Neurosci 2022; 14:907293. [PMID: 35693346 PMCID: PMC9178288 DOI: 10.3389/fnagi.2022.907293] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/02/2022] [Indexed: 12/15/2022] Open
Abstract
Pathogenic alpha-synuclein (asyn) aggregates are a defining feature of neurodegenerative synucleinopathies, which include Parkinson's disease, Lewy body dementia, pure autonomic failure and multiple system atrophy. Early accurate differentiation between these synucleinopathies is challenging due to the highly heterogeneous clinical profile at early prodromal disease stages. Therefore, diagnosis is often made in late disease stages when a patient presents with a broad range of motor and non-motor symptoms easing the differentiation. Increasing data suggest the clinical heterogeneity seen in patients is explained by the presence of distinct asyn strains, which exhibit variable morphologies and pathological functions. Recently, asyn seed amplification assays (PMCA and RT-QuIC) and conformation-specific ligand assays have made promising progress in differentiating between synucleinopathies in prodromal and advanced disease stages. Importantly, the cellular environment is known to impact strain morphology. And, asyn aggregate pathology can propagate trans-synaptically along the brain-body axis, affecting multiple organs and propagating through multiple cell types. Here, we present our hypothesis that the changing cellular environments, an asyn seed may encounter during its brain-to-body or body-to-brain propagation, may influence the structure and thereby the function of the aggregate strains developing within the different cells. Additionally, we aim to review strain characteristics of the different synucleinopathies in clinical and preclinical studies. Future preclinical animal models of synucleinopathies should investigate if asyn strain morphology is altered during brain-to-body and body-to-brain spreading using these seeding amplification and conformation-specific assays. Such findings would greatly deepen our understanding of synucleinopathies and the potential link between strain and phenotypic variability, which may enable specific diagnosis of different synucleinopathies in the prodromal phase, creating a large therapeutic window with potential future applications in clinical trials and personalized therapeutics.
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Affiliation(s)
- Mie Kristine Just
- Institute for Clinical Medicine, Aarhus University, Aarhus, Denmark
- Nuclear Medicine and PET, Aarhus University Hospital, Aarhus, Denmark
| | - Hjalte Gram
- Department of Biomedicine, DANDRITE-Danish Research Institute of Translational Neuroscience, Aarhus University, Aarhus, Denmark
| | - Vasileios Theologidis
- Department of Biomedicine, DANDRITE-Danish Research Institute of Translational Neuroscience, Aarhus University, Aarhus, Denmark
| | - Poul Henning Jensen
- Department of Biomedicine, DANDRITE-Danish Research Institute of Translational Neuroscience, Aarhus University, Aarhus, Denmark
| | - K. Peter R. Nilsson
- Division of Chemistry, Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden
| | - Mikael Lindgren
- Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway
| | - Karoline Knudsen
- Institute for Clinical Medicine, Aarhus University, Aarhus, Denmark
- Nuclear Medicine and PET, Aarhus University Hospital, Aarhus, Denmark
| | - Per Borghammer
- Institute for Clinical Medicine, Aarhus University, Aarhus, Denmark
- Nuclear Medicine and PET, Aarhus University Hospital, Aarhus, Denmark
| | - Nathalie Van Den Berge
- Institute for Clinical Medicine, Aarhus University, Aarhus, Denmark
- Nuclear Medicine and PET, Aarhus University Hospital, Aarhus, Denmark
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4
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Mori W, Kawakami R, Niko Y, Haruta T, Imamura T, Shiraki K, Zako T. Differences in interaction lead to the formation of different types of insulin amyloid. Sci Rep 2022; 12:8556. [PMID: 35595809 PMCID: PMC9123177 DOI: 10.1038/s41598-022-12212-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 05/04/2022] [Indexed: 11/25/2022] Open
Abstract
Insulin balls, localized insulin amyloids formed at the site of repeated insulin injections in patients with diabetes, cause poor glycemic control and cytotoxicity. Our previous study has shown that insulin forms two types of amyloids; toxic amyloid formed from the intact insulin ((i)-amyloid) and less-toxic amyloid formed in the presence of the reducing reagent TCEP ((r)-amyloid), suggesting insulin amyloid polymorphism. However, the differences in the formation mechanism and cytotoxicity expression are still unclear. Herein, we demonstrate that the liquid droplets, which are stabilized by electrostatic interactions, appear only in the process of toxic (i)-amyloid formation, but not in the less-toxic (r)-amyloid formation process. The effect of various additives such as arginine, 1,6-hexanediol, and salts on amyloid formation was also examined to investigate interactions that are important for amyloid formation. Our results indicate that the maturation processes of these two amyloids were significantly different, whereas the nucleation by hydrophobic interactions was similar. These results also suggest the difference in the formation mechanism of two different insulin amyloids is attributed to the difference in the intermolecular interactions and could be correlated with the cytotoxicity.
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Affiliation(s)
- Wakako Mori
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, Japan
| | - Ryosuke Kawakami
- Department of Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Ehime, Japan
| | - Yosuke Niko
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, Kochi, Japan
| | | | - Takeshi Imamura
- Department of Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Ehime, Japan
| | - Kentaro Shiraki
- Faculty of Pure and Applied Sciences, University of Tsukuba, Ibaraki, Japan
| | - Tamotsu Zako
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, Japan.
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5
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Yamamoto N, Chatani E. Multistep growth of amyloid intermediates and its inhibition toward exploring therapeutic way: A case study using insulin B chain and fibrinogen. Biophys Physicobiol 2022; 19:1-10. [PMID: 35797403 PMCID: PMC9173859 DOI: 10.2142/biophysico.bppb-v19.0017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 05/02/2022] [Indexed: 12/01/2022] Open
Abstract
It is crucial to understand the mechanism of amyloid fibril formation for the development of the therapeutic ways against amyloidoses and neurodegenerative diseases. Prefibrillar intermediates, which emerge prior to the fibril formation, seem to play a key role to the occurrence of nuclei of amyloid fibrils. We have focused on an insulin-derived peptide, B chain, to precisely clarify the mechanism of the fibril formation via prefibrillar intermediates. Various kinds of methods such as circular dichroism spectroscopy, dynamic light scattering, small-angle X-ray scattering, and atomic force microscopy were employed to track the structural changes in prefibrillar intermediates. The prefibrillar intermediates possessing rod-shaped structures elongated as a function of time, which led to fibril formation. We have also found that a blood clotting protein, fibrinogen, inhibits the amyloid fibril formation of B chain. This was caused by the stabilization of prefibrillar intermediates and thus the suppression of their elongation by fibrinogen. These findings have not only shed light on detailed mechanisms about how prefibrillar intermediates convert to the amyloid fibril, but also demonstrated that inhibiting the structural development of prefibrillar intermediates is an effective strategy to develop therapeutic ways against amyloid-related diseases. This review article is an extended version of the Japanese article, Observing Development of Amyloid Prefibrillar Intermediates and their Interaction with Chaperones for Inhibiting the Fibril Formation, published in SEIBUTSU BUTSURI Vol. 61, p. 236–239 (2021).
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6
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Kasai T, Wada T, Iijima T, Minami Y, Sakaguchi T, Koga R, Shiratori T, Otsuka Y, Shimada Y, Okayama Y, Goto S. Comparative study of the hydrophobic interaction effect of pH and ionic strength on aggregation/emulsification of Congo red and amyloid fibrillation of insulin. BBA ADVANCES 2022; 2:100036. [PMID: 37082585 PMCID: PMC10074904 DOI: 10.1016/j.bbadva.2021.100036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 11/29/2021] [Accepted: 12/14/2021] [Indexed: 11/19/2022] Open
Abstract
Amyloid fibrillation is provoked by the conformational rearrangement of its source. In our previous study, we claimed that the conformational rearrangement of hen egg white lysozyme requires intermolecular aggregation/packing induced. Our proposed causality of the aggregation and amyloid formation was demonstrated by the quantitative dependence of amyloid fibrillation on pH difference from its isoelectric point (pI) and on the square root of ionic strength in order to reduce the intermolecular repulsion due to the shielding effect of electrolytes (DLVO effect). When Congo red has dianionic form at the pH higher than its pKa, it forms ribbon-like micelle colloids under lower ionic strength, while it loses electrostatic repulsion and aggregates to be emulsified in the octanolic phase under the higher ionic strength. These behaviors of Congo red were resembling to molecular assembly of surfactants. In contrast, the amyloid formation of insulin was proportional to the square root of ionic strength at the pH lower than its isoelectric point. Therefore, the trigger for conformational rearrangement of amyloid fibrillation is predominantly gripped by hydrophobic hydration and an electrostatic shielding effect. We concluded that the both behaviors of Congo red and insulin were derived from a driving force related to the hydrophobic hydration.
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Affiliation(s)
- Takahiro Kasai
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Takashi Wada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Tsubasa Iijima
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yoshiko Minami
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Tomoyo Sakaguchi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Ryotaro Koga
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Tomoki Shiratori
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yuta Otsuka
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yohsuke Shimada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yukiko Okayama
- School of Pharmacy, International University of Health and Welfare, 26001-1 Kita-kanemaru, Ohtawara, Tochigi 236-8501, Japan
| | - Satoru Goto
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- School of Pharmacy, International University of Health and Welfare, 26001-1 Kita-kanemaru, Ohtawara, Tochigi 236-8501, Japan
- Corresponding author.
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7
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Amyloidogenicity of peptides targeting diabetes and obesity. Colloids Surf B Biointerfaces 2021; 209:112157. [PMID: 34715595 DOI: 10.1016/j.colsurfb.2021.112157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/20/2021] [Accepted: 10/09/2021] [Indexed: 12/15/2022]
Abstract
Since the discovery of insulin, a century ago, the repertoire of therapeutic polypeptides targeting diabetes - and now also obesity - have increased substantially. The focus on quality has shifted from impure and unstable preparations of animal insulin to highly pure, homologous recombinant insulin, along with other peptide-based hormones and analogs such as amylin analogs (pramlintide, davalintide, cagrilintide), glucagon and glucagon-like peptide-1 receptor agonists (GLP-1, liraglutide, exenatide, semaglutide). Proper formulation, storage, manipulation and usage by professionals and patients are required in order to avoid agglomeration into high molecular weight products (HMWP), either amorphous or amyloid, which could result in potential loss of biological activity and short- or long-term immune reaction and silent inactivation. In this narrative review, we present perspective of the aggregation of therapeutic polypeptides used in diabetes and other metabolic diseases, covering the nature and mechanisms, analytical techniques, physical and chemical stability, strategies aimed to hamper the formation of HMWP, and perspectives on future biopharmaceutical developments.
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8
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Kunitomi R, Pradipta AR, Kawabe H, Lobsiger N, Tanaka K, Zako T. Inhibition of amyloid formation of amyloid β (1-42), amylin and insulin by 1,5-diazacyclooctanes, a spermine-acrolein conjugate. Bioorg Med Chem 2021; 46:116391. [PMID: 34488020 DOI: 10.1016/j.bmc.2021.116391] [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: 04/28/2021] [Revised: 08/13/2021] [Accepted: 08/25/2021] [Indexed: 10/20/2022]
Abstract
Amyloid aggregates of proteins are known to be involved in various diseases such as Alzheimer's disease (AD). It is therefore speculated that the inhibition of amyloid formation can play an important role in the prevention of various diseases involving amyloids. Recently, we have found that acrolein reacts with polyamines, such as spermine, and produces 1,5-diazacyclooctane, such as cyclic spermine (cSPM). cSPM could suppress the aggregation of amyloid β 1-40 (Aβ40), one of the causative proteins of AD. This result suggests the potential inhibitory effect of cSPM against Aβ 1-42 (Aβ42) and other amyloid protein aggregation which are the main pathological features of AD and other diseases. However, the effect on the aggregation of such proteins remains unclear. In this study, the effect of cSPM on the amyloid formation of Aβ42, amylin, and insulin was investigated. These three amyloidogenic proteins forming amyloids under physiological conditions (pH 7.4 and 37℃) served as model and are thought to be the causative proteins of AD, type 2 diabetes, and insulin-derived amyloidosis, respectively. Our results indicate that cSPM can suppress the amyloid aggregation of these proteins and reduce cytotoxicity. This study contributes to a better understanding of means to potentially counteract diseases by the means of polyamine and acrolein.
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Affiliation(s)
- Risako Kunitomi
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo, Matsuyama, Ehime 790-8577, Japan
| | - Ambara R Pradipta
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan; Biofunctional Synthetic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Haruka Kawabe
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo, Matsuyama, Ehime 790-8577, Japan
| | - Nadine Lobsiger
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo, Matsuyama, Ehime 790-8577, Japan; Institute for Chemical and Bioengineering, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich, Switzerland
| | - Katsunori Tanaka
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan; Biofunctional Synthetic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Biofunctional Chemistry Laboratory, Alexander Butlerov Institute of Chemistry, Kazan Federal University, 18 Kremlyovskaya Street, 420008 Kazan, Russian Federation
| | - Tamotsu Zako
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo, Matsuyama, Ehime 790-8577, Japan.
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9
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Wu H, Movafaghi S, Francino Urdániz IM, Rowe TM, Goodwin A, Randolph TW. Insulin Fibril Formation Caused by Mechanical Shock and Cavitation. J Phys Chem B 2021; 125:8021-8027. [PMID: 34260251 DOI: 10.1021/acs.jpcb.1c01997] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cavitation can occur when liquids are exposed to pressure waves of sufficient amplitude, producing rapidly expanding and collapsing gas bubbles that generate localized regions of high energy dissipation. When vials containing insulin were subjected to mechanical shock or when ultrasound was applied to the vials, the resulting cavitation events induced formation of insulin amyloid fibril nuclei that were detected by transmission electron microscopy and quantified by fluorescence spectroscopy following staining with the amyloid-sensitive dye thioflavin-T. Dropping insulin solutions in glass vials produced only minute amounts of insulin fibril nuclei, which could be detected by allowing the nuclei to grow. Cavitation-induced formation of amyloid aggregates may be relevant for iatrogenic insulin deposition disease, where insulin fibrils formed in vitro prior to administration to patients could serve as nuclei for growing fibril deposits in vivo.
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Affiliation(s)
- Hao Wu
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Sanli Movafaghi
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Irene M Francino Urdániz
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Tessa M Rowe
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Andrew Goodwin
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States.,Material Science and Engineering Program, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Theodore W Randolph
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
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10
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Mori W, Yuzu K, Lobsiger N, Nishioka H, Sato H, Nagase T, Iwaya K, Lindgren M, Zako T. Degradation of insulin amyloid by antibiotic minocycline and formation of toxic intermediates. Sci Rep 2021; 11:6857. [PMID: 33767265 PMCID: PMC7994847 DOI: 10.1038/s41598-021-86001-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/08/2021] [Indexed: 12/28/2022] Open
Abstract
Insulin balls, localized insulin amyloids formed at subcutaneous insulin-injection sites in patients with diabetes, cause poor glycemic control owing to impairments in insulin absorption. Our previous study has shown that some insulin balls are cytotoxic, but others are not, implying amyloid polymorphism. Interestingly, the patient with toxic insulin balls had been treated with antibiotic minocycline, suggesting a possible relationship between toxicity of insulin balls and minocycline. However, the direct effect of minocycline on the structure and cytotoxicity of the insulin amyloid is still unclear. Herein, we demonstrated that that minocycline at physiological concentrations induced degradation of insulin amyloids formed from human insulin and insulin drug preparations used for diabetes patients. Interestingly, the process involved the initial appearance of the toxic species, which subsequently changed into less-toxic species. It is also shown that the structure of the toxic species was similar to that of sonicated fragments of human insulin amyloids. Our study shed new light on the clarification of the revelation of insulin balls and the development of the insulin analogs for diabetes therapy.
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Affiliation(s)
- Wakako Mori
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, 790-8577, Japan
| | - Keisuke Yuzu
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, 790-8577, Japan
| | - Nadine Lobsiger
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, 790-8577, Japan
- Institute for Chemical and Bioengineering, ETH Zürich, 8093, Zürich, Switzerland
| | - Hideo Nishioka
- Application Management Department, JEOL Ltd, Tokyo, 196-8558, Japan
| | - Hisako Sato
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, 790-8577, Japan
| | - Terumasa Nagase
- Department of Metabolism and Endocrinology, Tokyo Medical University Ibaraki Medical Center, Ibaraki, 3000395, Japan
| | - Keiichi Iwaya
- Department of Pathology, SASAKI Institute, Kyoundo Hospital, Tokyo, 101-0062, Japan
| | - Mikael Lindgren
- Department of Physics, Faculty of Natural Sciences, Norwegian University of Science and Technology, 7491, Trondheim, Norway
| | - Tamotsu Zako
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, 790-8577, Japan.
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11
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Tarabara U, Kirilova E, Kirilov G, Vus K, Zhytniakivska O, Trusova V, Gorbenko G. Benzanthrone dyes as mediators of cascade energy transfer in insulin amyloid fibrils. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115102] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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12
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Chen S, Yin H, Zhang L, Liu R, Qi W, He Z, Su R. Oligomeric procyanidins inhibit insulin fibrillation by forming unstructured and off-pathway aggregates. RSC Adv 2021; 11:37290-37298. [PMID: 35496438 PMCID: PMC9043779 DOI: 10.1039/d1ra05397c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 10/27/2021] [Indexed: 01/08/2023] Open
Abstract
Effects of natural polyphenols on insulin fibrillation were compared. OPCs show potent inhibitory effects at all stages of insulin fibrillation and redirect the insulin aggregation pathway via the formation of unstructured, off-pathway aggregates.
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Affiliation(s)
- Shaohuang Chen
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Huiting Yin
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Lei Zhang
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Rui Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhimin He
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- School of Marine Science and Technology, Tianjin University, Tianjin 300072, China
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