151
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Seuring C, Verasdonck J, Gath J, Ghosh D, Nespovitaya N, Wälti MA, Maji SK, Cadalbert R, Güntert P, Meier BH, Riek R. The three-dimensional structure of human β-endorphin amyloid fibrils. Nat Struct Mol Biol 2020; 27:1178-1184. [PMID: 33046908 DOI: 10.1038/s41594-020-00515-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 09/08/2020] [Indexed: 11/09/2022]
Abstract
In the pituitary gland, hormones are stored in a functional amyloid state within acidic secretory granules before they are released into the blood. To gain a detailed understanding of the structure-function relationship of amyloids in hormone secretion, the three-dimensional (3D) structure of the amyloid fibril of the human hormone β-endorphin was determined by solid-state NMR. We find that β-endorphin fibrils are in a β-solenoid conformation with a protonated glutamate residue in their fibrillar core. During exocytosis of the hormone amyloid the pH increases from acidic in the secretory granule to neutral level in the blood, thus it is suggested-and supported with mutagenesis data-that the pH change in the cellular milieu acts through the deprotonation of glutamate 8 to release the hormone from the amyloid. For amyloid disassembly in the blood, it is proposed that the pH change acts together with a buffer composition change and hormone dilution. In the pituitary gland, peptide hormones can be stored as amyloid fibrils within acidic secretory granules before release into the blood stream. Here, we use solid-state NMR to determine the 3D structure of the amyloid fiber formed by the human hormone β-endorphin. We find that β-endorphin fibrils are in a β-solenoid conformation that is generally reminiscent of other functional amyloids. In the β-endorphin amyloid, every layer of the β-solenoid is composed of a single peptide and protonated Glu8 is located in the fibrillar core. The secretory granule has an acidic pH but, on exocytosis, the β-endorphin fibril would encounter neutral pH conditions (pH 7.4) in the blood; this pH change would result in deprotonation of Glu8 to release the hormone peptide from the amyloid. Analyses of β-endorphin variants carrying mutations in Glu8 support the role of the protonation state of this residue in fibril disassembly, among other environmental changes.
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Affiliation(s)
- Carolin Seuring
- Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland.,Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - Joeri Verasdonck
- Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland
| | - Julia Gath
- Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland
| | - Dhimam Ghosh
- Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland.,Department of Biosciences and Bioengineering, IIT Bombay, Powai, Mumbai, India
| | | | | | - Samir K Maji
- Department of Biosciences and Bioengineering, IIT Bombay, Powai, Mumbai, India
| | | | - Peter Güntert
- Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland.,Institute of Biophysical Chemistry, Center for Biomolecular Magnetic Resonance, Goethe University Frankfurt am Main, Frankfurt am Main, Germany.,Graduate School of Science, Tokyo Metropolitan University, Tokyo, Japan
| | - Beat H Meier
- Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland.
| | - Roland Riek
- Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland. .,Structural Biology Laboratory, The Salk Institute, La Jolla, CA, USA.
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152
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Arya S, Ganguly P, Arsiccio A, Claud SL, Trapp B, Schonfeld GE, Liu X, Lazar Cantrell K, Shea JE, Bowers MT. Terminal Capping of an Amyloidogenic Tau Fragment Modulates Its Fibrillation Propensity. J Phys Chem B 2020; 124:8772-8783. [PMID: 32816481 DOI: 10.1021/acs.jpcb.0c05768] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Aberrant protein folding leading to the formation of characteristic cross-β-sheet-rich amyloid structures is well known for its association with a variety of debilitating human diseases. Often, depending upon amino acid composition, only a small segment of a large protein participates in amyloid formation and is in fact capable of self-assembling into amyloid, independent of the rest of the protein. Therefore, such peptide fragments serve as useful model systems for understanding the process of amyloid formation. An important factor that has often been overlooked while using peptides to mimic full-length protein is the charge on the termini of these peptides. Here, we show the influence of terminal charges on the aggregation of an amyloidogenic peptide from microtubule-associated protein Tau, implicated in Alzheimer's disease and tauopathies. We found that modification of terminal charges by capping the peptide at one or both of the termini drastically modulates the fibrillation of the hexapeptide sequence paired helical filament 6 (PHF6) from repeat 3 of Tau, both with and without heparin. Without heparin, the PHF6 peptide capped at both termini and PHF6 capped only at the N-terminus self-assembled to form amyloid fibrils. With heparin, all capping variants of PHF6, except for PHF6 with both termini free, formed typical amyloid fibrils. However, the rate and extent of aggregation both with and without heparin as well as the morphology of aggregates were found to be highly dependent on the terminal charges. Our molecular dynamics simulations on PHF6 capping variants corroborated our experiments and provided critical insights into the mechanism of PHF6 self-assembly. Overall, our results emphasize the importance of terminal modifications in fibrillation of small peptide fragments and provide significant insights into the aggregation of a small Tau fragment, which is considered essential for Tau filament assembly.
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Affiliation(s)
- Shruti Arya
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Pritam Ganguly
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Andrea Arsiccio
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Sarah L Claud
- Department of Chemistry, Westmont College, Santa Barbara, California 93108, United States
| | - Benjamin Trapp
- Neon Therapeutics, Cambridge, Massachusetts 02139, United States
| | - Grace E Schonfeld
- Department of Chemistry, Westmont College, Santa Barbara, California 93108, United States
| | - Xikun Liu
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Kristi Lazar Cantrell
- Department of Chemistry, Westmont College, Santa Barbara, California 93108, United States
| | - Joan-Emma Shea
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Michael T Bowers
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
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153
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Han Y, Cao Y, Bolisetty S, Tian T, Handschin S, Lu C, Mezzenga R. Amyloid Fibril-Templated High-Performance Conductive Aerogels with Sensing Properties. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004932. [PMID: 33090676 DOI: 10.1002/smll.202004932] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Indexed: 06/11/2023]
Abstract
Amyloid fibrils have garnered increasing attention as viable building blocks for functional material design and synthesis, especially those derived from food and agricultural wastes. Here, amyloid fibrils generated from β-lactoglobulin, a by-product from cheese industries, have been successfully used as a template for the design of a new class of high-performance conductive aerogels with sensing properties. These mechanically stable aerogels with three-dimensional porous architecture have a large surface area (≈159 m2 g-1), low density (≈0.044 g cm-3), and high electrical conductivity (≈0.042 S cm-1). A pressure sensing device is developed from these aerogels based on their combined electrical conductivity and compressible properties. More interestingly, these aerogels can be employed to design novel enzyme sensors by exploiting the proteinaceous nature of amyloid fibrils. This study expands the scope of structured amyloid fibrils as scaffolds for in situ polymerization of conducting polymers, offering new opportunities to design materials with multiple functionalities.
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Affiliation(s)
- Yangyang Han
- Department of Health Science and Technology, ETH Zurich, Schmelzbergstrasse 9, LFO E23, Zurich, 8092, Switzerland
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, China
| | - Yiping Cao
- Department of Health Science and Technology, ETH Zurich, Schmelzbergstrasse 9, LFO E23, Zurich, 8092, Switzerland
| | - Sreenath Bolisetty
- Department of Health Science and Technology, ETH Zurich, Schmelzbergstrasse 9, LFO E23, Zurich, 8092, Switzerland
- BluAct Technologies GmbH, Zurich, 8092, Switzerland
| | - Tian Tian
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog Weg 1, Zurich, 8093, Switzerland
| | - Stephan Handschin
- Department of Health Science and Technology, ETH Zurich, Schmelzbergstrasse 9, LFO E23, Zurich, 8092, Switzerland
| | - Canhui Lu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, China
| | - Raffaele Mezzenga
- Department of Health Science and Technology, ETH Zurich, Schmelzbergstrasse 9, LFO E23, Zurich, 8092, Switzerland
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154
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Kaffy J, Berardet C, Mathieu L, Legrand B, Taverna M, Halgand F, Van Der Rest G, Maillard LT, Ongeri S. Helical γ‐Peptide Foldamers as Dual Inhibitors of Amyloid‐β Peptide and Islet Amyloid Polypeptide Oligomerization and Fibrillization. Chemistry 2020; 26:14612-14622. [DOI: 10.1002/chem.202001716] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/28/2020] [Indexed: 01/08/2023]
Affiliation(s)
- Julia Kaffy
- Université Paris-Saclay CNRS BioCIS 92290 Châtenay-Malabry France
| | - Corentin Berardet
- Université Paris-Saclay CNRS BioCIS 92290 Châtenay-Malabry France
- Université Paris Saclay CNRS Institut Galien de Paris Sud 92290 Châtenay-Malabry France
| | - Loïc Mathieu
- Institut des Biomolécules Max Mousseron UMR 5247 CNRS Université de Montpellier-CNRS-ENSCM, UMR 5247 UFR des Sciences Pharmaceutiques et Biologiques 15 Avenue Charles Flahault 34093 Montpellier Cedex 5 France
| | - Baptiste Legrand
- Institut des Biomolécules Max Mousseron UMR 5247 CNRS Université de Montpellier-CNRS-ENSCM, UMR 5247 UFR des Sciences Pharmaceutiques et Biologiques 15 Avenue Charles Flahault 34093 Montpellier Cedex 5 France
| | - Myriam Taverna
- Université Paris Saclay CNRS Institut Galien de Paris Sud 92290 Châtenay-Malabry France
- Institut Universitaire de France 1, rue Descartes 75231 Paris Cedex 05 France
| | - Frédéric Halgand
- Université Paris-Saclay CNRS Institut de Chimie Physique 91405 Orsay France
| | | | - Ludovic T. Maillard
- Institut des Biomolécules Max Mousseron UMR 5247 CNRS Université de Montpellier-CNRS-ENSCM, UMR 5247 UFR des Sciences Pharmaceutiques et Biologiques 15 Avenue Charles Flahault 34093 Montpellier Cedex 5 France
| | - Sandrine Ongeri
- Université Paris-Saclay CNRS BioCIS 92290 Châtenay-Malabry France
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155
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Distinct Animal Food Allergens Form IgE-Binding Amyloids. ALLERGIES 2020. [DOI: 10.3390/allergies1010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Several animal food allergens assemble into amyloids under gastric-like environments. These aggregated structures provide Gad m 1 with an enhanced immunoglobulin E (IgE) interaction due to the fibrillation of the epitope regions. However, whether these properties are unique to Gad m 1 or shared by other food allergens has not yet been addressed. Using Bos d 5, Bos d 12 and Gal d 2 as allergen models and Gad m 1 as the control, aggregation reactions and the sera of milk, egg and fish allergic patients have been analyzed, assessing the IgE interactions of their amyloids. We found that amyloids formed by Bos d 12 and Gal d 2 full-length and truncated chains are recognized by the IgEs of milk and egg allergic patient sera. As with Gad m 1, in most cases amyloid recognition is higher than that of the native structure. Bos d 5 was not recognized under any fold by the IgE of the sera studied. These results suggest that the formation of IgE-binding amyloids could be a common feature to animal food allergens.
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156
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Wiegand T, Malär AA, Cadalbert R, Ernst M, Böckmann A, Meier BH. Asparagine and Glutamine Side-Chains and Ladders in HET-s(218-289) Amyloid Fibrils Studied by Fast Magic-Angle Spinning NMR. Front Mol Biosci 2020; 7:582033. [PMID: 33195425 PMCID: PMC7556116 DOI: 10.3389/fmolb.2020.582033] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 08/28/2020] [Indexed: 12/11/2022] Open
Abstract
Asparagine and glutamine side-chains can form hydrogen-bonded ladders which contribute significantly to the stability of amyloid fibrils. We show, using the example of HET-s(218–289) fibrils, that the primary amide side-chain proton resonances can be detected in cross-polarization based solid-state NMR spectra at fast magic-angle spinning (MAS). J-coupling based experiments offer the possibility to distinguish them from backbone amide groups if the spin-echo lifetimes are long enough, which turned out to be the case for the glutamine side-chains, but not for the asparagine side-chains forming asparagine ladders. We explore the sensitivity of NMR observables to asparagine ladder formation. One of the two possible asparagine ladders in HET-s(218–289), the one comprising N226 and N262, is assigned by proton-detected 3D experiments at fast MAS and significant de-shielding of one of the NH2 proton resonances indicative of hydrogen-bond formation is observed. Small rotating-frame 15N relaxation-rate constants point to rigidified asparagine side-chains in this ladder. The proton resonances are homogeneously broadened which could indicate chemical exchange, but is presently not fully understood. The second asparagine ladder (N243 and N279) in contrast remains more flexible.
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Affiliation(s)
- Thomas Wiegand
- Physical Chemistry, Eidgenössische Technische Hochschule (ETH) Zurich, Zurich, Switzerland
| | - Alexander A Malär
- Physical Chemistry, Eidgenössische Technische Hochschule (ETH) Zurich, Zurich, Switzerland
| | - Riccardo Cadalbert
- Physical Chemistry, Eidgenössische Technische Hochschule (ETH) Zurich, Zurich, Switzerland
| | - Matthias Ernst
- Physical Chemistry, Eidgenössische Technische Hochschule (ETH) Zurich, Zurich, Switzerland
| | - Anja Böckmann
- Molecular Microbiology and Structural Biochemistry, UMR 5086 CNRS/Université de Lyon, Labex Ecofect, Lyon, France
| | - Beat H Meier
- Physical Chemistry, Eidgenössische Technische Hochschule (ETH) Zurich, Zurich, Switzerland
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157
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Kosolapova AO, Antonets KS, Belousov MV, Nizhnikov AA. Biological Functions of Prokaryotic Amyloids in Interspecies Interactions: Facts and Assumptions. Int J Mol Sci 2020; 21:E7240. [PMID: 33008049 PMCID: PMC7582709 DOI: 10.3390/ijms21197240] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 02/07/2023] Open
Abstract
Amyloids are fibrillar protein aggregates with an ordered spatial structure called "cross-β". While some amyloids are associated with development of approximately 50 incurable diseases of humans and animals, the others perform various crucial physiological functions. The greatest diversity of amyloids functions is identified within prokaryotic species where they, being the components of the biofilm matrix, function as adhesins, regulate the activity of toxins and virulence factors, and compose extracellular protein layers. Amyloid state is widely used by different pathogenic bacterial species in their interactions with eukaryotic organisms. These amyloids, being functional for bacteria that produce them, are associated with various bacterial infections in humans and animals. Thus, the repertoire of the disease-associated amyloids includes not only dozens of pathological amyloids of mammalian origin but also numerous microbial amyloids. Although the ability of symbiotic microorganisms to produce amyloids has recently been demonstrated, functional roles of prokaryotic amyloids in host-symbiont interactions as well as in the interspecies interactions within the prokaryotic communities remain poorly studied. Here, we summarize the current findings in the field of prokaryotic amyloids, classify different interspecies interactions where these amyloids are involved, and hypothesize about their real occurrence in nature as well as their roles in pathogenesis and symbiosis.
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Affiliation(s)
- Anastasiia O. Kosolapova
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia (K.S.A.); (M.V.B.)
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia
| | - Kirill S. Antonets
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia (K.S.A.); (M.V.B.)
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia
| | - Mikhail V. Belousov
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia (K.S.A.); (M.V.B.)
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia
| | - Anton A. Nizhnikov
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia (K.S.A.); (M.V.B.)
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia
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158
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Aubrey LD, Blakeman BJF, Lutter L, Serpell CJ, Tuite MF, Serpell LC, Xue WF. Quantification of amyloid fibril polymorphism by nano-morphometry reveals the individuality of filament assembly. Commun Chem 2020; 3:125. [PMID: 36703355 PMCID: PMC9814634 DOI: 10.1038/s42004-020-00372-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 08/12/2020] [Indexed: 01/29/2023] Open
Abstract
Amyloid fibrils are highly polymorphic structures formed by many different proteins. They provide biological function but also abnormally accumulate in numerous human diseases. The physicochemical principles of amyloid polymorphism are not understood due to lack of structural insights at the single-fibril level. To identify and classify different fibril polymorphs and to quantify the level of heterogeneity is essential to decipher the precise links between amyloid structures and their functional and disease associated properties such as toxicity, strains, propagation and spreading. Employing gentle, force-distance curve-based AFM, we produce detailed images, from which the 3D reconstruction of individual filaments in heterogeneous amyloid samples is achieved. Distinctive fibril polymorphs are then classified by hierarchical clustering, and sample heterogeneity is objectively quantified. These data demonstrate the polymorphic nature of fibril populations, provide important information regarding the energy landscape of amyloid self-assembly, and offer quantitative insights into the structural basis of polymorphism in amyloid populations.
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Affiliation(s)
- Liam D. Aubrey
- grid.9759.20000 0001 2232 2818Kent Fungal Group, School of Biosciences, University of Kent, Canterbury, CT2 7NJ UK
| | - Ben J. F. Blakeman
- grid.9759.20000 0001 2232 2818Kent Fungal Group, School of Biosciences, University of Kent, Canterbury, CT2 7NJ UK
| | - Liisa Lutter
- grid.9759.20000 0001 2232 2818Kent Fungal Group, School of Biosciences, University of Kent, Canterbury, CT2 7NJ UK
| | - Christopher J. Serpell
- grid.9759.20000 0001 2232 2818School of Physical Sciences, University of Kent, Canterbury, CT2 7NH UK
| | - Mick F. Tuite
- grid.9759.20000 0001 2232 2818Kent Fungal Group, School of Biosciences, University of Kent, Canterbury, CT2 7NJ UK
| | - Louise C. Serpell
- grid.12082.390000 0004 1936 7590Sussex Neuroscience, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG UK
| | - Wei-Feng Xue
- grid.9759.20000 0001 2232 2818Kent Fungal Group, School of Biosciences, University of Kent, Canterbury, CT2 7NJ UK
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159
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Abstract
Amyloids are implicated in many protein misfolding diseases. Amyloid folds, however, also display a range of functional roles particularly in the microbial world. The templating ability of these folds endows them with specific properties allowing their self-propagation and protein-to-protein transmission in vivo. This property, the prion principle, is exploited by specific signaling pathways that use transmission of the amyloid fold as a way to convey information from a receptor to an effector protein. I describe here amyloid signaling pathways involving fungal nucleotide binding and oligomerization domain (NOD)-like receptors that were found to control nonself recognition and programmed cell death processes. Studies on these fungal amyloid signaling motifs stem from the characterization of the fungal [Het-s] prion protein and have led to the identification in fungi but also in multicellular bacteria of several distinct families of signaling motifs, one of which is related to RHIM [receptor-interacting protein (RIP) homotypic interaction motif], an amyloid motif regulating mammalian necroptosis.
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Affiliation(s)
- Sven J. Saupe
- Institut de Biochimie et de Génétique Cellulaire, UMR 5095 CNRS, Université de Bordeaux, 33077 Bordeaux CEDEX, France
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160
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Stephen Inbaraj B, Chen BH. An overview on recent in vivo biological application of cerium oxide nanoparticles. Asian J Pharm Sci 2020; 15:558-575. [PMID: 33193860 PMCID: PMC7610205 DOI: 10.1016/j.ajps.2019.10.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 08/25/2019] [Accepted: 10/05/2019] [Indexed: 12/13/2022] Open
Abstract
Cerium oxide nanoparticles (CNPs) possess a great potential as therapeutic agents due to their ability to self-regenerate by reversibly switching between two valences +3 and +4. This article reviews recent articles dealing with in vivo studies of CNPs towards Alzheimer's disease, obesity, liver inflammation, cancer, sepsis, amyotrophic lateral sclerosis, acute kidney injury, radiation-induced tissue damage, hepatic ischemia reperfusion injury, retinal diseases and constipation. In vivo anti-cancer studies revealed the effectiveness of CNPs to reduce tumor growth and angiogenesis in melanoma, ovarian, breast and retinoblastoma cancer cell-induced mice, with their conjugation with folic acid, doxorubicin, CPM, or CXC receptor-4 antagonist ligand eliciting higher efficiency. After conjugation with triphenylphosphonium or magnetite nanoparticles, CNPs were shown to combat Alzheimer's disease by reducing amyloid-β, glial fibrillary acidic protein, inflammatory and oxidative stress markers in mice. By improving muscle function and longevity, the citrate/EDTA-stabilized CNPs could ameliorate amyotrophic lateral sclerosis. Also, they could effectively reduce obesity in mice by scavenging ROS and reducing adipogenesis, triglyceride synthesis, GAPDH enzyme activity, leptin and insulin levels. In CCl4-induced rats, stress signaling pathways due to inflammatory cytokines, liver enzymes, oxidative and endoplasmic reticulum messengers could be attenuated by CNPs. Commercial CNPs showed protective effects on rats with hepatic ischemia reperfusion and peritonitis-induced hepatic/cardiac injuries by decreasing oxidative stress and hepatic/cardiac inflammation. The same CNPs could improve kidney function by diminishing renal superoxide, hyperglycemia and tubular damage in peritonitis-induced acute kidney injury in rats. Radiation-induced lung and testicular tissue damage could be alleviated in mice, with the former showing improvement in pulmonary distress and bronchoconstriction and the latter exhibiting restoration in spermatogenesis rate and spermatid/spermatocyte number. Through enhancement of gastrointestinal motility, the CNPs could alleviate constipation in both young and old rats. They could also protect rat from light-induced retinal damage by slowing down neurodegenerative process and microglial activation.
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Affiliation(s)
| | - Bing-Huei Chen
- Department of Food Science, Fu Jen Catholic University, Taipei 242
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161
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Altamirano-Bustamante NF, Garrido-Magaña E, Morán E, Calderón A, Pasten-Hidalgo K, Castillo-Rodríguez RA, Rojas G, Lara-Martínez R, Leyva-García E, Larralde-Laborde M, Domíguez G, Murata C, Margarita-Vazquez Y, Payro R, Barbosa M, Valderrama A, Montesinos H, Domínguez-Camacho A, García-Olmos VH, Ferrer R, Medina-Bravo PG, Santoscoy F, Revilla-Monsalve C, Jiménez-García LF, Morán J, Villalobos-Alva J, Villalobos MJ, Calzada-León R, Altamirano P, Altamirano-Bustamante MM. Protein-conformational diseases in childhood: Naturally-occurring hIAPP amyloid-oligomers and early β-cell damage in obesity and diabetes. PLoS One 2020; 15:e0237667. [PMID: 32833960 PMCID: PMC7446879 DOI: 10.1371/journal.pone.0237667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 07/30/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND AIMS This is the first time that obesity and diabetes mellitus (DM) as protein conformational diseases (PCD) are reported in children and they are typically diagnosed too late, when β-cell damage is evident. Here we wanted to investigate the level of naturally-ocurring or real (not synthetic) oligomeric aggregates of the human islet amyloid polypeptide (hIAPP) that we called RIAO in sera of pediatric patients with obesity and diabetes. We aimed to reduce the gap between basic biomedical research, clinical practice-health decision making and to explore whether RIAO work as a potential biomarker of early β-cell damage. MATERIALS AND METHODS We performed a multicentric collaborative, cross-sectional, analytical, ambispective and blinded study; the RIAO from pretreated samples (PTS) of sera of 146 pediatric patients with obesity or DM and 16 healthy children, were isolated, measured by sound indirect ELISA with novel anti-hIAPP cytotoxic oligomers polyclonal antibody (MEX1). We carried out morphological and functional studied and cluster-clinical data driven analysis. RESULTS We demonstrated by western blot, Transmission Electron Microscopy and cell viability experiments that RIAO circulate in the blood and can be measured by ELISA; are elevated in serum of childhood obesity and diabetes; are neurotoxics and works as biomarkers of early β-cell failure. We explored the range of evidence-based medicine clusters that included the RIAO level, which allowed us to classify and stratify the obesity patients with high cardiometabolic risk. CONCLUSIONS RIAO level increases as the number of complications rises; RIAOs > 3.35 μg/ml is a predictor of changes in the current indicators of β-cell damage. We proposed a novel physio-pathological pathway and shows that PCD affect not only elderly patients but also children. Here we reduced the gap between basic biomedical research, clinical practice and health decision making.
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MESH Headings
- Adolescent
- Animals
- Cell Line
- Cell Survival
- Cells, Cultured
- Child
- Child, Preschool
- Cross-Sectional Studies
- Diabetes Mellitus, Type 1/blood
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/pathology
- Humans
- Insulin-Secreting Cells/pathology
- Islet Amyloid Polypeptide/blood
- Islet Amyloid Polypeptide/metabolism
- Islet Amyloid Polypeptide/toxicity
- Islet Amyloid Polypeptide/ultrastructure
- Microscopy, Electron, Transmission
- Neurons/drug effects
- Obesity/blood
- Obesity/complications
- Obesity/pathology
- Pilot Projects
- Primary Cell Culture
- Protein Multimerization
- Protein Structure, Quaternary
- Rats
- Toxicity Tests, Acute
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Affiliation(s)
| | - Eulalia Garrido-Magaña
- UMAE Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Eugenia Morán
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Aurora Calderón
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Karina Pasten-Hidalgo
- Instituto Nacional de Pediatría, Mexico City, Mexico
- Cátedras Conacyt, Consejo Nacional de Ciencia y Tecnología, Mexico City, Mexico
| | - Rosa Angélica Castillo-Rodríguez
- Instituto Nacional de Pediatría, Mexico City, Mexico
- Cátedras Conacyt, Consejo Nacional de Ciencia y Tecnología, Mexico City, Mexico
| | - Gerardo Rojas
- UMAE Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | - Edgar Leyva-García
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Mateo Larralde-Laborde
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | | | | | - Rafael Payro
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Manuel Barbosa
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | | | | | | | - Regina Ferrer
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | - Fernanda Santoscoy
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Cristina Revilla-Monsalve
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | - Julio Morán
- Instituto de Fisiología Celular, UNAM, Mexico City, Mexico
| | - Jalil Villalobos-Alva
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Mario Javier Villalobos
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | - Perla Altamirano
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Myriam M. Altamirano-Bustamante
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
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Chakraborty R, Lentzsch S. Emerging drugs for the treatment of light chain amyloidosis. Expert Opin Emerg Drugs 2020; 25:299-317. [PMID: 32731778 DOI: 10.1080/14728214.2020.1803829] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Systemic AL amyloidosis is a protein-misfolding disorder that is characterized by the deposition of insoluble amyloid fibrils derived from kinetically unstable light chains. Achieving a rapid and deep hematologic response is critical for long-term survival. AREAS COVERED This review covers the existing and emerging treatment options for systemic AL, divided into anti-plasma cell and fibril-directed therapies. The anti-CD38 monoclonal antibody daratumumab has demonstrated an unprecedented hematologic response rate and will become the new standard-of-care in newly diagnosed patients in combination with CyBorD/VCD. Other plasma cell-directed drugs that have prospective data on safety and efficacy in AL include proteasome inhibitors [bortezomib and ixazomib], immunomodulatory drugs [lenalidomide and pomalidomide], and alkylating agents [melphalan and bendamustine]. A major unmet need is the development of fibril-directed therapies with the goal of eliminating amyloid fibrils that are already deposited in vital organs. EXPERT OPINION The treatment of newly diagnosed AL in the future will likely include daratumumab-based therapy in conjunction with fibril-directed therapy. The most promising second line drugs are venetoclax [for t(11;14)] and pomalidomide, with several others in the pipeline, including antibody-drug conjugates. Minimal residual disease will emerge as a new endpoint for drug development and will potentially guide treatment duration.
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Affiliation(s)
- Rajshekhar Chakraborty
- Department of Medicine, Division of Hematology and Oncology, Columbia University Medical Center , New York, USA
| | - Suzanne Lentzsch
- Department of Medicine, Division of Hematology and Oncology, Columbia University Medical Center , New York, USA
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163
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C. elegans Models to Study the Propagation of Prions and Prion-Like Proteins. Biomolecules 2020; 10:biom10081188. [PMID: 32824215 PMCID: PMC7464663 DOI: 10.3390/biom10081188] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/10/2020] [Accepted: 08/13/2020] [Indexed: 12/14/2022] Open
Abstract
A hallmark common to many age-related neurodegenerative diseases, such as Alzheimer’s disease (AD), Parkinson’s disease (PD), and amyotrophic lateral sclerosis (ALS), is that patients develop proteinaceous deposits in their central nervous system (CNS). The progressive spreading of these inclusions from initially affected sites to interconnected brain areas is reminiscent of the behavior of bona fide prions in transmissible spongiform encephalopathies (TSEs), hence the term prion-like proteins has been coined. Despite intensive research, the exact mechanisms that facilitate the spreading of protein aggregation between cells, and the associated loss of neurons, remain poorly understood. As population demographics in many countries continue to shift to higher life expectancy, the incidence of neurodegenerative diseases is also rising. This represents a major challenge for healthcare systems and patients’ families, since patients require extensive support over several years and there is still no therapy to cure or stop these diseases. The model organism Caenorhabditis elegans offers unique opportunities to accelerate research and drug development due to its genetic amenability, its transparency, and the high degree of conservation of molecular pathways. Here, we will review how recent studies that utilize this soil dwelling nematode have proceeded to investigate the propagation and intercellular transmission of prions and prion-like proteins and discuss their relevance by comparing their findings to observations in other model systems and patients.
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164
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Ke PC, Zhou R, Serpell LC, Riek R, Knowles TPJ, Lashuel HA, Gazit E, Hamley IW, Davis TP, Fändrich M, Otzen DE, Chapman MR, Dobson CM, Eisenberg DS, Mezzenga R. Half a century of amyloids: past, present and future. Chem Soc Rev 2020; 49:5473-5509. [PMID: 32632432 PMCID: PMC7445747 DOI: 10.1039/c9cs00199a] [Citation(s) in RCA: 304] [Impact Index Per Article: 76.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Amyloid diseases are global epidemics with profound health, social and economic implications and yet remain without a cure. This dire situation calls for research into the origin and pathological manifestations of amyloidosis to stimulate continued development of new therapeutics. In basic science and engineering, the cross-β architecture has been a constant thread underlying the structural characteristics of pathological and functional amyloids, and realizing that amyloid structures can be both pathological and functional in nature has fuelled innovations in artificial amyloids, whose use today ranges from water purification to 3D printing. At the conclusion of a half century since Eanes and Glenner's seminal study of amyloids in humans, this review commemorates the occasion by documenting the major milestones in amyloid research to date, from the perspectives of structural biology, biophysics, medicine, microbiology, engineering and nanotechnology. We also discuss new challenges and opportunities to drive this interdisciplinary field moving forward.
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Affiliation(s)
- Pu Chun Ke
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Zhongshan Hospital, Fudan University, 111 Yixueyuan Rd, Xuhui District, Shanghai, China
| | - Ruhong Zhou
- Institute of Quantitative Biology, Zhejiang University, Hangzhou 310058, China; Department of Chemistry, Columbia University, New York, New York, 10027, USA
| | - Louise C. Serpell
- School of Life Sciences, University of Sussex, Falmer, East Sussex BN1 9QG, UK
| | - Roland Riek
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, Wolfgang-Pauli-Str. 10, 8093 Zurich, Switzerland
| | - Tuomas P. J. Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, CB3 0HE, Cambridge, UK
| | - Hilal A. Lashuel
- Laboratory of Molecular Neurobiology and Neuroproteomics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences; Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, 69978 Tel Aviv, Israel
| | - Ian W. Hamley
- School of Chemistry, Food Biosciences and Pharmacy, University of Reading, Whiteknights, Reading RG6 6AD, UK
| | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Qld 4072, Australia
| | - Marcus Fändrich
- Institute of Protein Biochemistry, Ulm University, 89081, Ulm, Germany
| | - Daniel Erik Otzen
- Department of Molecular Biology, Center for Insoluble Protein Structures (inSPIN), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Matthew R. Chapman
- Department of Molecular, Cellular and Developmental Biology, Centre for Microbial Research, University of Michigan, Ann Arbor, MI 48109-1048, USA
| | - Christopher M. Dobson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - David S. Eisenberg
- Departments of Chemistry and Biochemistry and Biological Chemistry, UCLA-DOE Institute and Howard Hughes Medical Institute, UCLA, Los Angeles, CA, USA
| | - Raffaele Mezzenga
- Department of Health Science & Technology, ETH Zurich, Schmelzbergstrasse 9, LFO, E23, 8092 Zurich, Switzerland
- Department of Materials, ETH Zurich, Wolfgang Pauli Strasse 10, 8093 Zurich, Switzerland
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165
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Proteotoxicity and Neurodegenerative Diseases. Int J Mol Sci 2020; 21:ijms21165646. [PMID: 32781742 PMCID: PMC7460676 DOI: 10.3390/ijms21165646] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/01/2020] [Accepted: 08/04/2020] [Indexed: 02/07/2023] Open
Abstract
Neurodegenerative diseases are a major burden for our society, affecting millions of people worldwide. A main goal of past and current research is to enhance our understanding of the mechanisms underlying proteotoxicity, a common theme among these incurable and debilitating conditions. Cell proteome alteration is considered to be one of the main driving forces that triggers neurodegeneration, and unraveling the biological complexity behind the affected molecular pathways constitutes a daunting challenge. This review summarizes the current state on key processes that lead to cellular proteotoxicity in Alzheimer's disease, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis, providing a comprehensive landscape of recent literature. A foundational understanding of how proteotoxicity affects disease etiology and progression may provide essential insight towards potential targets amenable of therapeutic intervention.
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166
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Jia L, Wang W, Yan Y, Hu R, Sang J, Zhao W, Wang Y, Wei W, Cui W, Yang G, Lu F, Zheng J, Liu F. General Aggregation-Induced Emission Probes for Amyloid Inhibitors with Dual Inhibition Capacity against Amyloid β-Protein and α-Synuclein. ACS APPLIED MATERIALS & INTERFACES 2020; 12:31182-31194. [PMID: 32584021 DOI: 10.1021/acsami.0c07745] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Amyloid self-assembly is pathologically linked to many neurodegenerative diseases, including Alzheimer's disease (AD) and Parkinson's disease (PD). While many inhibitors have been developed individually for specific amyloid proteins, there are a few effective platforms to screen on a large scale general amyloid inhibitors against different amyloid proteins. Herein, we developed a new class of amyloid inhibitor probes by site-specific conjugation of aggregation-induced emission (AIE) molecules with amyloid proteins (i.e., AIE@amyloid probes) to realize a high-throughput screening of small-molecule inhibitors. Optimization of site-specific AIE conjugation with two amyloid proteins, amyloid-β protein (Aβ) and α-synuclein (αSN), enabled us to retain their high amyloidogenic properties; i.e., AIE-amyloid probes alone exhibited strong fluorescence due to amyloid-like aggregation, but they showed no fluorescence in the presence of amyloid inhibitors to prevent amyloid aggregation. From integration of AIE@amyloid probes and computational virtual screening from a large drug database, it was found that tolcapone possessed a dual inhibition against the aggregation and cytotoxicity of both Aβ and αSN. More importantly, tolcapone significantly improved the spatial cognition and recognition of Aβ-treated mice. This work represents an innovative attempt to design an AIE-based anti-amyloid drug platform for identifying new small-molecule inhibitors against amyloidogenesis in both AD and PD or other amyloid diseases.
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Affiliation(s)
- Longgang Jia
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
- College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Wenjuan Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Yushan Yan
- Ningbo Key Laboratory of Behavioral Neuroscience, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Zhejiang 315211, China
| | - Rui Hu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jingcheng Sang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wenping Zhao
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Ying Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wei Wei
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wei Cui
- Ningbo Key Laboratory of Behavioral Neuroscience, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Zhejiang 315211, China
| | - Guoqiang Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Fuping Lu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Fufeng Liu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
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167
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Garcia AM, Giorgiutti C, El Khoury Y, Bauer V, Spiegelhalter C, Leize-Wagner E, Hellwig P, Potier N, Torbeev V. Aggregation and Amyloidogenicity of the Nuclear Coactivator Binding Domain of CREB-Binding Protein. Chemistry 2020; 26:9889-9899. [PMID: 32364648 DOI: 10.1002/chem.202001847] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 04/30/2020] [Indexed: 12/28/2022]
Abstract
The nuclear coactivator binding domain (NCBD) of transcriptional co-regulator CREB-binding protein (CBP) is an example of conformationally malleable proteins that can bind to structurally unrelated protein targets and adopt distinct folds in the respective protein complexes. Here, we show that the folding landscape of NCBD contains an alternative pathway that results in protein aggregation and self-assembly into amyloid fibers. The initial steps of such protein misfolding are driven by intermolecular interactions of its N-terminal α-helix bringing multiple NCBD molecules into contact. These oligomers then undergo slow but progressive interconversion into β-sheet-containing aggregates. To reveal the concealed aggregation potential of NCBD we used a chemically synthesized mirror-image d-NCBD form. The addition of d-NCBD promoted self-assembly into amyloid precipitates presumably due to formation of thermodynamically more stable racemic β-sheet structures. The unexpected aggregation of NCBD needs to be taken into consideration given the multitude of protein-protein interactions and resulting biological functions mediated by CBP.
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Affiliation(s)
- Ana Maria Garcia
- ISIS (Institut de Science et d'Ingénierie Supramoléculaires) and, icFRC (International Center for Frontier Research in Chemistry), University of Strasbourg, CNRS-UMR 7006, 8 allée Gaspard Monge, 67083, Strasbourg, France
| | - Christophe Giorgiutti
- Laboratory of Mass-Spectrometry of Interactions and Systems, University of Strasbourg, CNRS-UMR 7140, 1 rue Blaise Pascal, 67070, Strasbourg, France
| | - Youssef El Khoury
- Laboratory of Bioelectrochemistry and Spectroscopy, University of Strasbourg, CNRS-UMR 7140, 1 rue Blaise Pascal, 67070, Strasbourg, France
| | - Valentin Bauer
- ISIS (Institut de Science et d'Ingénierie Supramoléculaires) and, icFRC (International Center for Frontier Research in Chemistry), University of Strasbourg, CNRS-UMR 7006, 8 allée Gaspard Monge, 67083, Strasbourg, France
| | - Coralie Spiegelhalter
- Imaging Center, IGBMC (Institut de Génétique et de Biologie Moléculaire et Cellulaire), INSERM-U964, University of Strasbourg, CNRS-UMR 7104, 1 rue Laurent Fries, 67404, Illkirch, France
| | - Emmanuelle Leize-Wagner
- Laboratory of Mass-Spectrometry of Interactions and Systems, University of Strasbourg, CNRS-UMR 7140, 1 rue Blaise Pascal, 67070, Strasbourg, France
| | - Petra Hellwig
- Laboratory of Bioelectrochemistry and Spectroscopy, University of Strasbourg, CNRS-UMR 7140, 1 rue Blaise Pascal, 67070, Strasbourg, France
- Institute for Advanced Study, USIAS University of Strasbourg, 5 allée du Général Rouvillois, 67083, Strasbourg, France
| | - Noelle Potier
- Laboratory of Mass-Spectrometry of Interactions and Systems, University of Strasbourg, CNRS-UMR 7140, 1 rue Blaise Pascal, 67070, Strasbourg, France
| | - Vladimir Torbeev
- ISIS (Institut de Science et d'Ingénierie Supramoléculaires) and, icFRC (International Center for Frontier Research in Chemistry), University of Strasbourg, CNRS-UMR 7006, 8 allée Gaspard Monge, 67083, Strasbourg, France
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168
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Xu Y, Zhao M, Han Y, Zhang H. GABAergic Inhibitory Interneuron Deficits in Alzheimer's Disease: Implications for Treatment. Front Neurosci 2020; 14:660. [PMID: 32714136 PMCID: PMC7344222 DOI: 10.3389/fnins.2020.00660] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 05/28/2020] [Indexed: 12/16/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized clinically by severe cognitive deficits and pathologically by amyloid plaques, neuronal loss, and neurofibrillary tangles. Abnormal amyloid β-protein (Aβ) deposition in the brain is often thought of as a major initiating factor in AD neuropathology. However, gamma-aminobutyric acid (GABA) inhibitory interneurons are resistant to Aβ deposition, and Aβ decreases synaptic glutamatergic transmission to decrease neural network activity. Furthermore, there is now evidence suggesting that neural network activity is aberrantly increased in AD patients and animal models due to functional deficits in and decreased activity of GABA inhibitory interneurons, contributing to cognitive deficits. Here we describe the roles played by excitatory neurons and GABA inhibitory interneurons in Aβ-induced cognitive deficits and how altered GABA interneurons regulate AD neuropathology. We also comprehensively review recent studies on how GABA interneurons and GABA receptors can be exploited for therapeutic benefit. GABA interneurons are an emerging therapeutic target in AD, with further clinical trials urgently warranted.
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Affiliation(s)
- Yilan Xu
- Neurodegeneration and Neuroregeneration Laboratory, Department of Basic Medicine, School of Medicine, Shaoxing University, Shaoxing, China
| | - Manna Zhao
- Neurodegeneration and Neuroregeneration Laboratory, Department of Basic Medicine, School of Medicine, Shaoxing University, Shaoxing, China
| | - Yuying Han
- Neurodegeneration and Neuroregeneration Laboratory, Department of Basic Medicine, School of Medicine, Shaoxing University, Shaoxing, China
| | - Heng Zhang
- Neurodegeneration and Neuroregeneration Laboratory, Department of Basic Medicine, School of Medicine, Shaoxing University, Shaoxing, China
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169
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Boopathi S, Dinh Quoc Huy P, Gonzalez W, Theodorakis PE, Li MS. Zinc binding promotes greater hydrophobicity inAlzheimer's Aβ42peptide than copper binding: Molecular dynamics and solvation thermodynamics studies. Proteins 2020; 88:1285-1302. [DOI: 10.1002/prot.25901] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/04/2020] [Accepted: 05/13/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Subramanian Boopathi
- Centro de Bioinformática y Simulación Molecular (CBSM), Facultad de IngenieríaUniversidad de Talca Talca Chile
| | | | - Wendy Gonzalez
- Centro de Bioinformática y Simulación Molecular (CBSM), Facultad de IngenieríaUniversidad de Talca Talca Chile
- Millennium Nucleus of Ion Channels‐Associated Diseases (MiNICAD)Universidad de Talca Talca Chile
| | | | - Mai Suan Li
- Institute of PhysicsPolish Academy of Sciences Warsaw Poland
- Institute for Computational Science and Technology, Quang Trung Software City Tan Chanh Hiep Ward Ho Chi Minh City Vietnam
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170
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Namioka S, Yoshida N, Konno H, Makabe K. Residue-Specific Binding Mechanisms of Thioflavin T to a Surface of Flat β-Sheets within a Peptide Self-Assembly Mimic. Biochemistry 2020; 59:2782-2787. [DOI: 10.1021/acs.biochem.0c00280] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sae Namioka
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jyonan, Yonezawa, Yamagata 992-8510, Japan
| | - Norio Yoshida
- Department of Chemistry, Graduate School of Science, Kyushu University, Fukuoka 812-8582, Japan
| | - Hiroyuki Konno
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jyonan, Yonezawa, Yamagata 992-8510, Japan
| | - Koki Makabe
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jyonan, Yonezawa, Yamagata 992-8510, Japan
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171
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Wilkosz N, Czaja M, Seweryn S, Skirlińska-Nosek K, Szymonski M, Lipiec E, Sofińska K. Molecular Spectroscopic Markers of Abnormal Protein Aggregation. Molecules 2020; 25:E2498. [PMID: 32471300 PMCID: PMC7321069 DOI: 10.3390/molecules25112498] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 12/12/2022] Open
Abstract
Abnormal protein aggregation has been intensively studied for over 40 years and broadly discussed in the literature due to its significant role in neurodegenerative diseases etiology. Structural reorganization and conformational changes of the secondary structure upon the aggregation determine aggregation pathways and cytotoxicity of the aggregates, and therefore, numerous analytical techniques are employed for a deep investigation into the secondary structure of abnormal protein aggregates. Molecular spectroscopies, including Raman and infrared ones, are routinely applied in such studies. Recently, the nanoscale spatial resolution of tip-enhanced Raman and infrared nanospectroscopies, as well as the high sensitivity of the surface-enhanced Raman spectroscopy, have brought new insights into our knowledge of abnormal protein aggregation. In this review, we order and summarize all nano- and micro-spectroscopic marker bands related to abnormal aggregation. Each part presents the physical principles of each particular spectroscopic technique listed above and a concise description of all spectral markers detected with these techniques in the spectra of neurodegenerative proteins and their model systems. Finally, a section concerning the application of multivariate data analysis for extraction of the spectral marker bands is included.
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Affiliation(s)
| | | | | | | | | | - Ewelina Lipiec
- M. Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Kraków, Poland; (N.W.); (M.C.); (S.S.); (K.S.-N.); (M.S.)
| | - Kamila Sofińska
- M. Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Kraków, Poland; (N.W.); (M.C.); (S.S.); (K.S.-N.); (M.S.)
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172
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Peters C, Bascuñán D, Burgos CF, Bobadilla C, González-Sanmiguel J, Boopathi S, Riffo N, Fernández-Pérez EJ, Tarnok ME, Aguilar LF, Gonzalez W, Aguayo LG. Characterization of a new molecule capable of inhibiting several steps of the amyloid cascade in Alzheimer's disease. Neurobiol Dis 2020; 141:104938. [PMID: 32434047 DOI: 10.1016/j.nbd.2020.104938] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 05/04/2020] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Alzheimer's disease (AD) is the most prevalent neurodegenerative disorder in elderly people. Existent therapies are directed at alleviating some symptoms, but are not effective in altering the course of the disease. METHODS Based on our previous study that showed that an Aβ-interacting small peptide protected against the toxic effects of amyloid-beta peptide (Aβ), we carried out an array of in silico, in vitro, and in vivo assays to identify a molecule having neuroprotective properties. RESULTS In silico studies showed that the molecule, referred to as M30 (2-Octahydroisoquinolin-2(1H)-ylethanamine), was able to interact with the Aβ peptide. Additionally, in vitro assays showed that M30 blocked Aβ aggregation, association to the plasma membrane, synaptotoxicity, intracellular calcium, and cellular toxicity, while in vivo experiments demonstrated that M30 induced a neuroprotective effect by decreasing the toxicity of Aβ in the dentate gyrus of the hippocampus and improving the alteration in spatial memory in behavior assays. DISCUSSION Therefore, we propose that this new small molecule could be a useful candidate for the additional development of a treatment against AD since it appears to block multiple steps in the amyloid cascade. Overall, since there are no drugs that effectively block the progression of AD, this approach represents an innovative strategy. SIGNIFICANCE Currently, there is no effective treatment for AD and the expectations to develop an effective therapy are low. Using in silico, in vitro, and in vivo experiments, we identified a new compound that is able to inhibit Aβ-induced neurotoxicity, specifically aggregation, association to neurons, synaptic toxicity, calcium dyshomeostasis and memory impairment induced by Aβ. Because Aβ toxicity is central to AD progression, the inhibition mediated by this new molecule might be useful as a therapeutic tool.
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Affiliation(s)
- Christian Peters
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Concepción, Chile
| | - Denisse Bascuñán
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Concepción, Chile
| | - Carlos F Burgos
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Concepción, Chile
| | - Catalina Bobadilla
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Concepción, Chile
| | | | - Subramanian Boopathi
- The Center for Bioinformatics and Molecular Simulations (CBSM), Universidad de Talca, Talca, Chile
| | - Nicolás Riffo
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Concepción, Chile
| | - Eduardo J Fernández-Pérez
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Concepción, Chile
| | - María Elena Tarnok
- Laboratory of Photophysics and Molecular Spectroscopy, Chemistry, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Luis Felipe Aguilar
- Laboratory of Photophysics and Molecular Spectroscopy, Chemistry, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Wendy Gonzalez
- The Center for Bioinformatics and Molecular Simulations (CBSM), Universidad de Talca, Talca, Chile; Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Universidad de Talca, Talca, Chile
| | - Luis G Aguayo
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Concepción, Chile.
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173
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Krystal HL, Ross DA, Mecca AP. Amyloid: From Starch to Finish. Biol Psychiatry 2020; 87:e23-e24. [PMID: 32299582 PMCID: PMC7449531 DOI: 10.1016/j.biopsych.2020.02.1182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 02/27/2020] [Accepted: 02/28/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Hannah L. Krystal
- Medical student, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - David A. Ross
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Adam P. Mecca
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
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174
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Sahoo BR, Cox SJ, Ramamoorthy A. High-resolution probing of early events in amyloid-β aggregation related to Alzheimer's disease. Chem Commun (Camb) 2020; 56:4627-4639. [PMID: 32300761 PMCID: PMC7254607 DOI: 10.1039/d0cc01551b] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In Alzheimer's disease (AD), soluble oligomers of amyloid-β (Aβ) are emerging as a crucial entity in driving disease progression as compared to insoluble amyloid deposits. The lacuna in establishing the structure to function relationship for Aβ oligomers prevents the development of an effective treatment for AD. While the transient and heterogeneous properties of Aβ oligomers impose many challenges for structural investigation, an effective use of a combination of NMR techniques has successfully identified and characterized them at atomic-resolution. Here, we review the successful utilization of solution and solid-state NMR techniques to probe the aggregation and structures of small and large oligomers of Aβ. Biophysical studies utilizing the commonly used solution and 19F based NMR experiments to identify the formation of small size early intermediates and to obtain their structures, and dock-lock mechanism of fiber growth at atomic-resolution are discussed. In addition, the use of proton-detected magic angle spinning (MAS) solid-state NMR experiments to obtain high-resolution insights into the aggregation pathways and structures of large oligomers and other aggregates is also presented. We expect these NMR based studies to be valuable for real-time monitoring of the depletion of monomers and the formation of toxic oligomers and high-order aggregates under a variety of conditions, and to solve the high-resolution structures of small and large size oligomers for most amyloid proteins, and therefore to develop inhibitors and drugs.
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Affiliation(s)
- Bikash R Sahoo
- Biophysics Program, Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA.
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175
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Yanar K, Atayik MC, Simsek B, Çakatay U. Novel biomarkers for the evaluation of aging-induced proteinopathies. Biogerontology 2020; 21:531-548. [PMID: 32274599 DOI: 10.1007/s10522-020-09878-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 04/02/2020] [Indexed: 02/07/2023]
Abstract
Proteinopathies are characterized by aging related accumulation of misfolded protein aggregates. Irreversible covalent modifications of aging proteins may significantly affect the native three dimentional conformation of proteins, alter their function and lead to accumulation of misfolded protein as dysfunctional aggregates. Protein misfolding and accumulation of aberrant proteins are known to be associated with aging-induced proteinopathies such as amyloid ß and tau proteins in Alzheimer's disease, α-synuclein in Parkinson's disease and islet amyloid polypeptides in Type 2 diabetes mellitus. Protein oxidation processes such as S-nitrosylation, dityrosine formation and some of the newly elucidated processes such as carbamylation and citrullination recently drew the attention of researchers in the field of Gerontology. Studying over these processes and illuminating their relations between proteinopathies may help to diagnose early and even to treat age related disorders. Therefore, we have chosen to concentrate on aging-induced proteinopathic nature of these novel protein modifications in this review.
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Affiliation(s)
- Karolin Yanar
- Department of Medical Biochemistry, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Mehmet Can Atayik
- Cerrahpasa Faculty of Medicine, Medical Program, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Bahadir Simsek
- Cerrahpasa Faculty of Medicine, Medical Program, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ufuk Çakatay
- Department of Medical Biochemistry, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey.
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176
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Furukawa K, Aguirre C, So M, Sasahara K, Miyanoiri Y, Sakurai K, Yamaguchi K, Ikenaka K, Mochizuki H, Kardos J, Kawata Y, Goto Y. Isoelectric point-amyloid formation of α-synuclein extends the generality of the solubility and supersaturation-limited mechanism. Curr Res Struct Biol 2020; 2:35-44. [PMID: 34235468 PMCID: PMC8244297 DOI: 10.1016/j.crstbi.2020.03.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/02/2020] [Accepted: 03/30/2020] [Indexed: 12/30/2022] Open
Abstract
Proteins in either a native or denatured conformation often aggregate at an isoelectric point (pI), a phenomenon known as pI precipitation. However, only a few studies have addressed the role of pI precipitation in amyloid formation, the crystal-like aggregation of denatured proteins. We found that α-synuclein, an intrinsically disordered protein of 140 amino acid residues associated with Parkinson's disease, formed amyloid fibrils at pI (= 4.7) under the low-sodium phosphate conditions. Although α-synuclein also formed amyloid fibrils at a wide pH range under high concentrations of sodium phosphate, the pI-amyloid formation was characterized by marked amyloid-specific thioflavin T fluorescence and clear fibrillar morphology, indicating highly ordered structures. Analysis by heteronuclear NMR in combination with principal component analysis suggested that amyloid formation under low and high phosphate conditions occurred by distinct mechanisms. The former was likely to be caused by the intermolecular attractive charge-charge interactions, where α-synuclein has +17 and −17 charges even with the zero net charge. On the other hand, the latter was caused by the phosphate-dependent salting-out effects. pI-amyloid formation may play a role in the membrane-dependent amyloid formation of α-synuclein, where the negatively charged membrane surface reduces the local pH to pI and the membrane hydrophobic environment enhances electrostatic interactions. The results extend the supersaturation-limited mechanism of amyloid formation: Amyloid fibrils are formed under a variety of conditions of decreased solubility of denatured proteins triggered by the breakdown of supersaturation. pI precipitation of α-synuclein led to the formation of amyloid fibrils. Fibrils formed at pI were more organized than those formed under other conditions. Attractive charge-charge interactions are responsible for the pI-amyloid formation. pI-amyloid formation may lead to the amyloid formation upon phospholipid membranes.
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Affiliation(s)
- Koki Furukawa
- Institute for Protein Research, Osaka University, Yamadaoka 3-2, Suita, Osaka, 565-0871, Japan
| | - Cesar Aguirre
- Institute for Protein Research, Osaka University, Yamadaoka 3-2, Suita, Osaka, 565-0871, Japan
| | - Masatomo So
- Institute for Protein Research, Osaka University, Yamadaoka 3-2, Suita, Osaka, 565-0871, Japan
| | - Kenji Sasahara
- Institute for Protein Research, Osaka University, Yamadaoka 3-2, Suita, Osaka, 565-0871, Japan
| | - Yohei Miyanoiri
- Institute for Protein Research, Osaka University, Yamadaoka 3-2, Suita, Osaka, 565-0871, Japan
| | - Kazumasa Sakurai
- Institute of Advanced Technology, Kindai University, Wakayama, 649-6493, Japan
| | - Keiichi Yamaguchi
- Institute for Protein Research, Osaka University, Yamadaoka 3-2, Suita, Osaka, 565-0871, Japan
| | - Kensuke Ikenaka
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Hideki Mochizuki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Jozsef Kardos
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Eötvös Loránd University, Pázmány P. Sétány 1/C, Budapest, 1117, Hungary
| | - Yasushi Kawata
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, Tottori, 680-8552, Japan
| | - Yuji Goto
- Institute for Protein Research, Osaka University, Yamadaoka 3-2, Suita, Osaka, 565-0871, Japan
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177
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Liu J, Tian M, Shen L. Surface effects on the degree of twist in amyloid fibril structures. Chem Commun (Camb) 2020; 56:3147-3150. [PMID: 32057047 DOI: 10.1039/c9cc10079b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Amyloid fibrils, implicated in health and diseases, commonly exhibit a periodic twist trait relevant to the structures and dynamics of the fibrils. However, the origins and modulations of fibril twist in complex in vivo environments are not yet fully understood. Here we highlight an important factor that causes twist variations in amyloid fibril structures-the presence of surrounding surfaces. Using cholesterol-containing lipid bilayers with varying cholesterol contents, we have demonstrated via atomic force microscopy that amyloid-β peptide fibrils initiated on membranes increase their average pitch size of twisting periodicity as the cholesterol content increases. These surface-induced twist variations arise from the enhanced hydrophobic interactions between the fibril and the surface distorting the torsional elastic energy of the fibril twisting as supported by a theory of an elastic model. These findings not only provide an important insight into fibril polymorphism phenomena resulting from the surface effects but also suggest a novel solution to modulate filament twisting on the nanoscale for biomaterials applications involving nanoscale features.
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Affiliation(s)
- Jingjing Liu
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430074, China.
| | - Mengting Tian
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430074, China.
| | - Lei Shen
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430074, China.
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178
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Kazman P, Vielberg MT, Pulido Cendales MD, Hunziger L, Weber B, Hegenbart U, Zacharias M, Köhler R, Schönland S, Groll M, Buchner J. Fatal amyloid formation in a patient's antibody light chain is caused by a single point mutation. eLife 2020; 9:52300. [PMID: 32151314 PMCID: PMC7064341 DOI: 10.7554/elife.52300] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 02/06/2020] [Indexed: 11/29/2022] Open
Abstract
In systemic light chain amyloidosis, an overexpressed antibody light chain (LC) forms fibrils which deposit in organs and cause their failure. While it is well-established that mutations in the LC’s VL domain are important prerequisites, the mechanisms which render a patient LC amyloidogenic are ill-defined. In this study, we performed an in-depth analysis of the factors and mutations responsible for the pathogenic transformation of a patient-derived λ LC, by recombinantly expressing variants in E. coli. We show that proteolytic cleavage of the patient LC resulting in an isolated VL domain is essential for fibril formation. Out of 11 mutations in the patient VL, only one, a leucine to valine mutation, is responsible for fibril formation. It disrupts a hydrophobic network rendering the C-terminal segment of VL more dynamic and decreasing domain stability. Thus, the combination of proteolytic cleavage and the destabilizing mutation trigger conformational changes that turn the LC pathogenic. Amyloid light chain amyloidosis, shortened to AL amyloidosis, is a rare and often fatal disease. It is caused by a disorder of the bone marrow. Usually, cells in the bone marrow produce Y-shaped proteins called antibodies to fight infections. In AL amyloidosis, these cells release too much of the short arm of the antibody, known as its light chain, and the light chains also carry mutations. The antibodies are no longer able to assemble properly, and instead misfold and form structures, known as amyloid fibrils. The fibrils build up outside the cells, gradually causing damage to tissues and organs that can lead to life-threatening organ failure. Due to the rareness of the disease, diagnosis is often overlooked and delayed. People experience widely varying symptoms, depending on the organs affected. Also, given the diversity of antibodies people make, every person with AL amyloidosis has a variety of mutations implicated in their disease. It is thought that mutations in the antibody light chain make it unstable and prone to misfolding, but it remains unclear which specific mutations trigger a cascade of amyloid fibril formation. Now, Kazman et al. have pinpointed the exact mechanism in one case of the disease. First, tissue biopsies from a woman with advanced AL amyloidosis were analyzed, and the defunct antibody light chain was isolated. Eleven mutations were identified in the antibody light chain, only one of which was found to be responsible for the formation of the harmful fibrils. The next step was to determine how this one small change was so damaging. The experiments showed that after the antibody light chain was cut in two, a process that happens naturally in the body, this single mutation transforms it into a protein capable of causing disease. In this ‘bedside to lab bench’ study, Kazman et al. have succeeded in determining the molecular origin of one case of AL amyloidosis. The results have also shown that the instability of antibodies due to mutation does not alone explain the formation of amyloid fibrils in this disease and that the cutting of this protein in two is also important. It is hoped that, in the long run, this work will lead to new diagnostics and treatment options for people with AL amyloidosis.
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Affiliation(s)
- Pamina Kazman
- Center for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany
| | - Marie-Theres Vielberg
- Center for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany
| | - María Daniela Pulido Cendales
- Center for Integrated Protein Science Munich at the Department Physik, Technische Universität München, Garching, Germany
| | - Lioba Hunziger
- Center for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany
| | - Benedikt Weber
- Center for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany
| | - Ute Hegenbart
- Medical Department V, Amyloidosis Center, University of Heidelberg, Heidelberg, Germany
| | - Martin Zacharias
- Center for Integrated Protein Science Munich at the Department Physik, Technische Universität München, Garching, Germany
| | - Rolf Köhler
- Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany
| | - Stefan Schönland
- Medical Department V, Amyloidosis Center, University of Heidelberg, Heidelberg, Germany
| | - Michael Groll
- Center for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany
| | - Johannes Buchner
- Center for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany
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179
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Reja A, Afrose SP, Das D. Aldolase Cascade Facilitated by Self‐Assembled Nanotubes from Short Peptide Amphiphiles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914633] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Antara Reja
- Department of Chemical Sciences & Centre for Advanced Functional MaterialsIndian Institute of Science Education and Research (IISER) Kolkata Mohanpur, West Bengal 741246 India
| | - Syed Pavel Afrose
- Department of Chemical Sciences & Centre for Advanced Functional MaterialsIndian Institute of Science Education and Research (IISER) Kolkata Mohanpur, West Bengal 741246 India
| | - Dibyendu Das
- Department of Chemical Sciences & Centre for Advanced Functional MaterialsIndian Institute of Science Education and Research (IISER) Kolkata Mohanpur, West Bengal 741246 India
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180
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Liu J, Tian M, Shen L. Nanopatterned Polymer Surface Modulates Twist Polymorphism in a Single Amyloid Fibril. Macromol Rapid Commun 2020; 41:e1900619. [PMID: 32125062 DOI: 10.1002/marc.201900619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 01/30/2020] [Accepted: 02/20/2020] [Indexed: 01/02/2023]
Abstract
The periodic twist behaviors of amyloid fibrils initiated and formed on block copolymer films with nanoscale features are studied. The discovery of twist variations even in a single amyloid fibril is reported: the fibril can vary its twist extents in response to the underlying nanopatterned surfaces by keeping its neighboring crossover sections right above the periodic nanodomains and tuning the distance between neighboring crossover sections based on either the periodic nanodomain distance or the fibril contour direction. This nanopattern-induced twist polymorphism arises from the fibril's two edges, exhibiting different hydrophobic interactions with the periodic nanodomains, as demonstrated by simulation studies. This work contributes to the understanding of surface effects on twist polymorphism in amyloid fibril structures that may be important to fibril polymorphism in amyloid pathologies and bioapplications of amyloid fibrils.
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Affiliation(s)
- Jingjing Liu
- Wuhan University of Technology, Wuhan, 430074, China
| | - Mengting Tian
- Wuhan University of Technology, Wuhan, 430074, China
| | - Lei Shen
- Wuhan University of Technology, Wuhan, 430074, China
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181
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Abstract
Ageing is a major risk factor for the development of many diseases, prominently including neurodegenerative disorders such as Alzheimer disease and Parkinson disease. A hallmark of many age-related diseases is the dysfunction in protein homeostasis (proteostasis), leading to the accumulation of protein aggregates. In healthy cells, a complex proteostasis network, comprising molecular chaperones and proteolytic machineries and their regulators, operates to ensure the maintenance of proteostasis. These factors coordinate protein synthesis with polypeptide folding, the conservation of protein conformation and protein degradation. However, sustaining proteome balance is a challenging task in the face of various external and endogenous stresses that accumulate during ageing. These stresses lead to the decline of proteostasis network capacity and proteome integrity. The resulting accumulation of misfolded and aggregated proteins affects, in particular, postmitotic cell types such as neurons, manifesting in disease. Recent analyses of proteome-wide changes that occur during ageing inform strategies to improve proteostasis. The possibilities of pharmacological augmentation of the capacity of proteostasis networks hold great promise for delaying the onset of age-related pathologies associated with proteome deterioration and for extending healthspan.
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182
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Symmetry-breaking transitions in the early steps of protein self-assembly. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2020; 49:175-191. [PMID: 32123956 DOI: 10.1007/s00249-020-01424-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 01/22/2020] [Accepted: 02/10/2020] [Indexed: 10/24/2022]
Abstract
Protein misfolding and subsequent self-association are complex, intertwined processes, resulting in development of a heterogeneous population of aggregates closely related to many chronic pathological conditions including Type 2 Diabetes Mellitus and Alzheimer's disease. To address this issue, here, we develop a theoretical model in the general framework of linear stability analysis. According to this model, self-assemblies of peptides with pronounced conformational flexibility may become, under particular conditions, unstable and spontaneously evolve toward an alternating array of partially ordered and disordered monomers. The predictions of the theory were verified by atomistic molecular dynamics (MD) simulations of islet amyloid polypeptide (IAPP) used as a paradigm of aggregation-prone polypeptides (proteins). Simulations of dimeric, tetrameric, and hexameric human-IAPP self-assemblies at physiological electrolyte concentration reveal an alternating distribution of the smallest domains (of the order of the peptide mean length) formed by partially ordered (mainly β-strands) and disordered (turns and coil) arrays. Periodicity disappears upon weakening of the inter-peptide binding, a result in line with the predictions of the theory. To further probe the general validity of our hypothesis, we extended the simulations to other peptides, the Aβ(1-40) amyloid peptide, and the ovine prion peptide as well as to other proteins (SOD1 dimer) that do not belong to the broad class of intrinsically disordered proteins. In all cases, the oligomeric aggregates show an alternate distribution of partially ordered and disordered monomers. We also carried out Surface Enhanced Raman Scattering (SERS) measurements of hIAPP as an experimental validation of both the theory and in silico simulations.
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183
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Maiolo D, Pizzi A, Gori A, Bergamaschi G, Pigliacelli C, Gazzera L, Consonni A, Baggi F, Moda F, Baldelli Bombelli F, Metrangolo P, Resnati G. Enhanced self-assembly of the 7–12 sequence of amyloid-β peptide by tyrosine bromination. Supramol Chem 2020. [DOI: 10.1080/10610278.2020.1734203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Daniele Maiolo
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico Di Milano, Milano, Italy
| | - Andrea Pizzi
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico Di Milano, Milano, Italy
| | - Alessandro Gori
- Istituto Di Scienze E Tecnologie Chimiche, National Research Council of Italy, Milano, Italy
| | - Greta Bergamaschi
- Istituto Di Scienze E Tecnologie Chimiche, National Research Council of Italy, Milano, Italy
| | - Claudia Pigliacelli
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico Di Milano, Milano, Italy
- Hyber Center of Excellence, Department of Applied Physics, Aalto University, Espoo, Finland
| | - Lara Gazzera
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico Di Milano, Milano, Italy
| | | | - Fulvio Baggi
- Fondazione IRCCS Istituto Neurologico “Carlo Besta”, 20133 Milano, Italy
| | - Fabio Moda
- Fondazione IRCCS Istituto Neurologico “Carlo Besta”, 20133 Milano, Italy
| | - Francesca Baldelli Bombelli
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico Di Milano, Milano, Italy
| | - Pierangelo Metrangolo
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico Di Milano, Milano, Italy
- Hyber Center of Excellence, Department of Applied Physics, Aalto University, Espoo, Finland
| | - Giuseppe Resnati
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico Di Milano, Milano, Italy
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184
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Boyer DR, Li B, Sun C, Fan W, Zhou K, Hughes MP, Sawaya MR, Jiang L, Eisenberg DS. The α-synuclein hereditary mutation E46K unlocks a more stable, pathogenic fibril structure. Proc Natl Acad Sci U S A 2020; 117:3592-3602. [PMID: 32015135 PMCID: PMC7035510 DOI: 10.1073/pnas.1917914117] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Aggregation of α-synuclein is a defining molecular feature of Parkinson's disease, Lewy body dementia, and multiple systems atrophy. Hereditary mutations in α-synuclein are linked to both Parkinson's disease and Lewy body dementia; in particular, patients bearing the E46K disease mutation manifest a clinical picture of parkinsonism and Lewy body dementia, and E46K creates more pathogenic fibrils in vitro. Understanding the effect of these hereditary mutations on α-synuclein fibril structure is fundamental to α-synuclein biology. We therefore determined the cryo-electron microscopy (cryo-EM) structure of α-synuclein fibrils containing the hereditary E46K mutation. The 2.5-Å structure reveals a symmetric double protofilament in which the molecules adopt a vastly rearranged, lower energy fold compared to wild-type fibrils. We propose that the E46K misfolding pathway avoids electrostatic repulsion between K46 and K80, a residue pair which form the E46-K80 salt bridge in the wild-type fibril structure. We hypothesize that, under our conditions, the wild-type fold does not reach this deeper energy well of the E46K fold because the E46-K80 salt bridge diverts α-synuclein into a kinetic trap-a shallower, more accessible energy minimum. The E46K mutation apparently unlocks a more stable and pathogenic fibril structure.
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Affiliation(s)
- David R Boyer
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
- Department of Biological Chemistry, University of California, Los Angeles, CA 90095
- Department of Energy Institute, University of California, Los Angeles, CA 90095
- Molecular Biology Institute, University of California, Los Angeles, CA 90095
- Howard Hughes Medical Institute, University of California, Los Angeles, CA 90095
| | - Binsen Li
- Molecular Biology Institute, University of California, Los Angeles, CA 90095
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Chuanqi Sun
- Molecular Biology Institute, University of California, Los Angeles, CA 90095
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Weijia Fan
- Molecular Biology Institute, University of California, Los Angeles, CA 90095
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Kang Zhou
- California NanoSystems Institute, University of California, Los Angeles, CA 90095
| | - Michael P Hughes
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
- Department of Biological Chemistry, University of California, Los Angeles, CA 90095
- Department of Energy Institute, University of California, Los Angeles, CA 90095
- Molecular Biology Institute, University of California, Los Angeles, CA 90095
- Howard Hughes Medical Institute, University of California, Los Angeles, CA 90095
| | - Michael R Sawaya
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
- Department of Biological Chemistry, University of California, Los Angeles, CA 90095
- Department of Energy Institute, University of California, Los Angeles, CA 90095
- Molecular Biology Institute, University of California, Los Angeles, CA 90095
- Howard Hughes Medical Institute, University of California, Los Angeles, CA 90095
| | - Lin Jiang
- Molecular Biology Institute, University of California, Los Angeles, CA 90095;
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - David S Eisenberg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095;
- Department of Biological Chemistry, University of California, Los Angeles, CA 90095
- Department of Energy Institute, University of California, Los Angeles, CA 90095
- Molecular Biology Institute, University of California, Los Angeles, CA 90095
- Howard Hughes Medical Institute, University of California, Los Angeles, CA 90095
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185
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Wiglenda T, Groenke N, Hoffmann W, Manz C, Diez L, Buntru A, Brusendorf L, Neuendorf N, Schnoegl S, Haenig C, Schmieder P, Pagel K, Wanker EE. Sclerotiorin Stabilizes the Assembly of Nonfibrillar Abeta42 Oligomers with Low Toxicity, Seeding Activity, and Beta-sheet Content. J Mol Biol 2020; 432:2080-2098. [PMID: 32061932 DOI: 10.1016/j.jmb.2020.01.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/14/2020] [Accepted: 01/28/2020] [Indexed: 01/21/2023]
Abstract
The self-assembly of the 42-residue amyloid-β peptide, Aβ42, into fibrillar aggregates is associated with neuronal dysfunction and toxicity in Alzheimer's disease (AD) patient brains, suggesting that small molecules acting on this process might interfere with pathogenesis. Here, we present experimental evidence that the small molecule sclerotiorin (SCL), a natural product belonging to the group of azaphilones, potently delays both seeded and nonseeded Aβ42 polymerization in cell-free assays. Mechanistic biochemical studies revealed that the inhibitory effect of SCL on fibrillogenesis is caused by its ability to kinetically stabilize small Aβ42 oligomers. These structures exhibit low β-sheet content and do not possess seeding activity, indicating that SCL acts very early in the amyloid formation cascade before the assembly of seeding-competent, β-sheet-rich fibrillar aggregates. Investigations with NMR WaterLOGSY experiments confirmed the association of Aβ42 assemblies with SCL in solution. Furthermore, using ion mobility-mass spectrometry, we observed that SCL directly interacts with a small fraction of Aβ42 monomers in the gas phase. In comparison to typical amyloid fibrils, small SCL-stabilized Aβ42 assemblies are inefficiently taken up into mammalian cells and have low toxicity in cell-based assays. Overall, these mechanistic studies support a pathological role of stable, β-sheet-rich Aβ42 fibrils in AD, while structures with low β-sheet content may be less relevant.
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Affiliation(s)
- Thomas Wiglenda
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Nicole Groenke
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Waldemar Hoffmann
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - Christian Manz
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - Lisa Diez
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Alexander Buntru
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Lydia Brusendorf
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Nancy Neuendorf
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Sigrid Schnoegl
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Christian Haenig
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Peter Schmieder
- Leibniz-Institut für Molekulare Pharmakologie, Berlin, Germany
| | - Kevin Pagel
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - Erich E Wanker
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.
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186
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Maiolo D, Pizzi A, Gori A, Gazzera L, Demitri N, Genoni A, Baggi F, Moda F, Terraneo G, Baldelli Bombelli F, Metrangolo P, Resnati G. Halogenation of the N-Terminus Tyrosine 10 Promotes Supramolecular Stabilization of the Amyloid-β Sequence 7-12. ChemistryOpen 2020; 9:253-260. [PMID: 32110506 PMCID: PMC7041548 DOI: 10.1002/open.201900350] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/07/2020] [Indexed: 12/16/2022] Open
Abstract
Here, we demonstrate that introduction of halogen atoms at the tyrosine 10 phenol ring of the DSGYEV sequence derived from the flexible amyloid-β N-terminus, promotes its self-assembly in the solid state. In particular, we report the crystal structures of two halogen-modified sequences, which we found to be stabilized in the solid state by halogen-mediated interactions. The structural study is corroborated by Non-Covalent Interaction (NCI) analysis. Our results prove that selective halogenation of an amino acid enhances the supramolecular organization of otherwise unstructured biologically-relevant sequences. This method may develop as a general strategy for stabilizing highly polymorphic peptide regions.
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Affiliation(s)
- Daniele Maiolo
- Dept. Chem., Mater., and Chem. Eng. “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
| | - Andrea Pizzi
- Dept. Chem., Mater., and Chem. Eng. “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
| | - Alessandro Gori
- Istituto di Scienze e Tecnologie ChimicheNational Research Council of ItalyVia M. Bianco 920131MilanoItaly
| | - Lara Gazzera
- Dept. Chem., Mater., and Chem. Eng. “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
| | - Nicola Demitri
- Elettra – Sincrotrone TriesteS.S. 14 Km 163.5 in Area Science Park34149Basovizza – TriesteItaly
| | - Alessandro Genoni
- Laboratoire de Physique et Chimie ThéoriquesUniversité de Lorraine and CNRS UMR CNRS 70191 Boulevard Arago57078MetzFrance
| | - Fulvio Baggi
- Fondazione IRCCS Istituto Neurologico “Carlo Besta”Via G. Celoria 1120133MilanItaly
| | - Fabio Moda
- Fondazione IRCCS Istituto Neurologico “Carlo Besta”Via G. Celoria 1120133MilanItaly
| | - Giancarlo Terraneo
- Dept. Chem., Mater., and Chem. Eng. “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
- Istituto di Scienze e Tecnologie ChimicheNational Research Council of ItalyVia M. Bianco 920131MilanoItaly
| | | | - Pierangelo Metrangolo
- Dept. Chem., Mater., and Chem. Eng. “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
| | - Giuseppe Resnati
- Dept. Chem., Mater., and Chem. Eng. “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
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187
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Adsorption layer formation in dispersions of protein aggregates. Adv Colloid Interface Sci 2020; 276:102086. [PMID: 31895989 DOI: 10.1016/j.cis.2019.102086] [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] [Received: 10/07/2019] [Accepted: 12/13/2019] [Indexed: 02/06/2023]
Abstract
The review discusses recent results on the adsorption of amyloid fibrils and protein microgels at liquid/fluid interfaces. The application of the shear and dilational surface rheology, atomic force microscopy and passive particle probe tracking allowed for elucidating characteristic features of the protein aggregate adsorption while some proposed hypothesis still must be examined by special methods for structural characterization. Although the distinctions of the shear surface properties of dispersions of protein aggregates from the properties of native protein solutions are higher than the corresponding distinctions of the dilational surface properties, the latter ones give a possibility to obtain new information on the formation of fibril aggregates at the water/air interface. Only the adsorption of BLG microgels and fibrils was studied in some details. The kinetic dependencies of the dynamic surface tension and dilational surface elasticity for aqueous dispersions of protein globules, protein microgels and purified fibrils are similar if the system does not contain flexible macromolecules or flexible protein fragments. In the opposite case the kinetic dependencies of the dynamic surface elasticity can be non-monotonic. The solution pH influences strongly the dynamic surface properties of the dispersions of protein aggregates indicating that the adsorption kinetics is controlled by an electrostatic adsorption barrier if the pH deviates from the isoelectric point. A special section of the review considers the possibility to apply kinetic models of nanoparticle adsorption to the adsorption of protein aggregates.
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188
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Ridgway Z, Eldrid C, Zhyvoloup A, Ben-Younis A, Noh D, Thalassinos K, Raleigh DP. Analysis of Proline Substitutions Reveals the Plasticity and Sequence Sensitivity of Human IAPP Amyloidogenicity and Toxicity. Biochemistry 2020; 59:742-754. [PMID: 31922743 DOI: 10.1021/acs.biochem.9b01109] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Pancreatic amyloid formation by the polypeptide IAPP contributes to β-cell dysfunction in type 2 diabetes. There is a 1:1 correspondence between the ability of IAPP from different species to form amyloid in vitro and the susceptibility of the organism to develop diabetes. Rat IAPP is non-amyloidogenic and differs from human IAPP at six positions, including three proline replacements: A25P, S28P, and S29P. Incorporation of these proline residues into human IAPP leads to a non-amyloidogenic analogue that is used clinically. The role of the individual proline residues is not understood. We examine the three single and three double proline substitutions in the context of human IAPP. An S28P substitution significantly decreases amyloidogenicity and toxicity, while an S29P substitution has very modest effects despite being an identical replacement just one residue away. The consequences of the A25P substitution are between those of the two Ser to Pro substitutions. Double analogues containing an S28P replacement are less amyloidogenic and less toxic than the IAPPA25P S29P double analogue. Ion mobility mass spectrometry reveals that there is no correlation between the monomer or dimer conformation as reported by collision cross section measurements and the time to form amyloid. The work reveals both the plasticity of IAPP amyloid formation and the exquisite sequence sensitivity of IAPP amyloidogenicity and toxicity. The study highlights the key role of the S28P substitution and provides information that will aid in the rational design of soluble variants of IAPP. The variants studied here offer a system for further exploring features that control IAPP toxicity.
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Affiliation(s)
- Zachary Ridgway
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794-3400 , United States
| | - Charles Eldrid
- Institute of Structural and Molecular Biology , University College London , Gower Street , London WC1E 6BT , U.K
| | - Alexander Zhyvoloup
- Institute of Structural and Molecular Biology , University College London , Gower Street , London WC1E 6BT , U.K
| | - Aisha Ben-Younis
- Institute of Structural and Molecular Biology , University College London , Gower Street , London WC1E 6BT , U.K
| | - Daeun Noh
- Graduate Program in Biochemistry and Structural Biology , Stony Brook University , Stony Brook , New York 11794-3400 , United States
| | - Konstantinos Thalassinos
- Institute of Structural and Molecular Biology , University College London , Gower Street , London WC1E 6BT , U.K
| | - Daniel P Raleigh
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794-3400 , United States.,Institute of Structural and Molecular Biology , University College London , Gower Street , London WC1E 6BT , U.K
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189
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Reja A, Afrose SP, Das D. Aldolase Cascade Facilitated by Self-Assembled Nanotubes from Short Peptide Amphiphiles. Angew Chem Int Ed Engl 2020; 59:4329-4334. [PMID: 31920004 DOI: 10.1002/anie.201914633] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/17/2019] [Indexed: 12/25/2022]
Abstract
Early evolution benefited from a complex network of reactions involving multiple C-C bond forming and breaking events that were critical for primitive metabolism. Nature gradually chose highly evolved and complex enzymes such as lyases to efficiently facilitate C-C bond formation and cleavage with remarkable substrate selectivity. Reported here is a lipidated short peptide which accesses a homogenous nanotubular morphology to efficiently catalyze C-C bond cleavage and formation. This system shows morphology-dependent catalytic rates, suggesting the formation of a binding pocket and registered enhancements in the presence of the hydrogen-bond donor tyrosine, which is exploited by extant aldolases. These assemblies showed excellent substrate selectivity and templated the formation of a specific adduct from a pool of possible adducts. The ability to catalyze metabolically relevant cascade transformations suggests the importance of such systems in early evolution.
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Affiliation(s)
- Antara Reja
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
| | - Syed Pavel Afrose
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
| | - Dibyendu Das
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
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190
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Li D, Liu C. Structural Diversity of Amyloid Fibrils and Advances in Their Structure Determination. Biochemistry 2020; 59:639-646. [PMID: 31967790 DOI: 10.1021/acs.biochem.9b01069] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Protein amyloid fibrils are originally identified as pathological entities in a variety of neurodegenerative diseases such as Alzheimer's disease and Parkinson's disease. Recent studies have revealed that amyloid fibrils also serve as functional protein assemblies to fulfill a wide range of biological functions. Deciphering the molecular basis underlying the assembly of amyloid fibrils is essential for understanding their biological and pathological functions. Here, we summarize recent advances in the atomic structure determination of amyloid fibrils formed by both amyloidogenic peptides and full-length proteins. Furthermore, we demonstrate the diversity of amyloid fibrils, with a primary focus on the reversible fibrils, in sequence composition, self-assembled architecture, and physiochemical and pathological properties. Finally, we raise questions that will be answered by the future study of amyloid fibril structure.
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Affiliation(s)
- Dan Li
- Bio-X-Renji Hospital Research Center, Renji Hospital, School of Medicine , Shanghai Jiao Tong University , Shanghai 200240 , China.,Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Cong Liu
- Interdisciplinary Research Center on Biology and Chemistry , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , Shanghai 201210 , China
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191
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Juul-Madsen K, Qvist P, Bendtsen KL, Langkilde AE, Vestergaard B, Howard KA, Dehesa-Etxebeste M, Paludan SR, Andersen GR, Jensen PH, Otzen DE, Romero-Ramos M, Vorup-Jensen T. Size-Selective Phagocytic Clearance of Fibrillar α-Synuclein through Conformational Activation of Complement Receptor 4. THE JOURNAL OF IMMUNOLOGY 2020; 204:1345-1361. [PMID: 31969389 DOI: 10.4049/jimmunol.1900494] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 12/18/2019] [Indexed: 12/19/2022]
Abstract
Aggregation of α-synuclein (αSN) is an important histological feature of Parkinson disease. Recent studies showed that the release of misfolded αSN from human and rodent neurons is relevant to the progression and spread of αSN pathology. Little is known, however, about the mechanisms responsible for clearance of extracellular αSN. This study found that human complement receptor (CR) 4 selectively bound fibrillar αSN, but not monomeric species. αSN is an abundant protein in the CNS, which potentially could overwhelm clearance of cytotoxic αSN species. The selectivity of CR4 toward binding fibrillar αSN consequently adds an important αSN receptor function for maintenance of brain homeostasis. Based on the recently solved structures of αSN fibrils and the known ligand preference of CR4, we hypothesize that the parallel monomer stacking in fibrillar αSN creates a known danger-associated molecular pattern of stretches of anionic side chains strongly bound by CR4. Conformational change in the receptor regulated tightly clearance of fibrillar αSN by human monocytes. The induced change coupled concomitantly with phagolysosome formation. Data mining of the brain transcriptome in Parkinson disease patients supported CR4 as an active αSN clearance mechanism in this disease. Our results associate an important part of the innate immune system, namely complement receptors, with the central molecular mechanisms of CNS protein aggregation in neurodegenerative disorders.
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Affiliation(s)
- Kristian Juul-Madsen
- Biophysical Immunology Laboratory, Aarhus University, DK-8000 Aarhus C, Denmark.,Department of Biomedicine, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Per Qvist
- Department of Biomedicine, Aarhus University, DK-8000 Aarhus C, Denmark.,iPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus University, DK-8000 Aarhus C, Denmark.,iSEQ, Centre for Integrative Sequencing, Department of Biomedicine, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Kirstine L Bendtsen
- Department of Drug Design and Pharmacology, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark
| | - Annette E Langkilde
- Department of Drug Design and Pharmacology, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark
| | - Bente Vestergaard
- Department of Drug Design and Pharmacology, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark
| | - Kenneth A Howard
- Interdisciplinary Nanoscience Center, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Martxel Dehesa-Etxebeste
- Neuroscience Area, Biodonostia Research Institute, 20014 Donostia, San Sebastian, Spain.,CIBERNED, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Søren R Paludan
- Department of Biomedicine, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Gregers Rom Andersen
- Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Poul Henning Jensen
- Department of Biomedicine, Aarhus University, DK-8000 Aarhus C, Denmark.,DANDRITE-Danish Research Institute of Translational Neuroscience, Aarhus University, DK-8000 Aarhus C, Denmark; and
| | - Daniel E Otzen
- Interdisciplinary Nanoscience Center, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Marina Romero-Ramos
- Department of Biomedicine, Aarhus University, DK-8000 Aarhus C, Denmark.,DANDRITE-Danish Research Institute of Translational Neuroscience, Aarhus University, DK-8000 Aarhus C, Denmark; and.,NEURODIN AU IDEAS Center, Department of Biomedicine, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Thomas Vorup-Jensen
- Biophysical Immunology Laboratory, Aarhus University, DK-8000 Aarhus C, Denmark; .,Department of Biomedicine, Aarhus University, DK-8000 Aarhus C, Denmark.,Interdisciplinary Nanoscience Center, Aarhus University, DK-8000 Aarhus C, Denmark.,NEURODIN AU IDEAS Center, Department of Biomedicine, Aarhus University, DK-8000 Aarhus C, Denmark
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192
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Santos J, Iglesias V, Santos-Suárez J, Mangiagalli M, Brocca S, Pallarès I, Ventura S. pH-Dependent Aggregation in Intrinsically Disordered Proteins Is Determined by Charge and Lipophilicity. Cells 2020; 9:E145. [PMID: 31936201 PMCID: PMC7017033 DOI: 10.3390/cells9010145] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 12/26/2019] [Accepted: 01/06/2020] [Indexed: 12/18/2022] Open
Abstract
Protein aggregation is associated with an increasing number of human disorders and premature aging. Moreover, it is a central concern in the manufacturing of recombinant proteins for biotechnological and therapeutic applications. Nevertheless, the unique architecture of protein aggregates is also exploited by nature for functional purposes, from bacteria to humans. The relevance of this process in health and disease has boosted the interest in understanding and controlling aggregation, with the concomitant development of a myriad of algorithms aimed to predict aggregation propensities. However, most of these programs are blind to the protein environment and, in particular, to the influence of the pH. Here, we developed an empirical equation to model the pH-dependent aggregation of intrinsically disordered proteins (IDPs) based on the assumption that both the global protein charge and lipophilicity depend on the solution pH. Upon its parametrization with a model IDP, this simple phenomenological approach showed unprecedented accuracy in predicting the dependence of the aggregation of both pathogenic and functional amyloidogenic IDPs on the pH. The algorithm might be useful for diverse applications, from large-scale analysis of IDPs aggregation properties to the design of novel reversible nanofibrillar materials.
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Affiliation(s)
- Jaime Santos
- Institut de Biotecnologia i Biomedicina and Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain; (J.S.); (V.I.); (I.P.)
| | - Valentín Iglesias
- Institut de Biotecnologia i Biomedicina and Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain; (J.S.); (V.I.); (I.P.)
| | - Juan Santos-Suárez
- Galicia Supercomputing Center (CESGA), 15705 Santiago de Compostela, A Coruña, Spain;
| | - Marco Mangiagalli
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milano, Italy; (M.M.); (S.B.)
| | - Stefania Brocca
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milano, Italy; (M.M.); (S.B.)
| | - Irantzu Pallarès
- Institut de Biotecnologia i Biomedicina and Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain; (J.S.); (V.I.); (I.P.)
| | - Salvador Ventura
- Institut de Biotecnologia i Biomedicina and Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain; (J.S.); (V.I.); (I.P.)
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193
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Clavaguera F, Duyckaerts C, Haïk S. Prion-like properties of Tau assemblies. Curr Opin Neurobiol 2020; 61:49-57. [PMID: 31923760 DOI: 10.1016/j.conb.2019.11.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 12/16/2022]
Abstract
Emerging evidences linking pathological mechanisms of prions and tauopathies are accumulating. However, Tau assemblies do not yet fulfill all the criteria of prions. Here, we review recent data pointing similarities between prions and tauopathies and discuss the still existing uncertainties.
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Affiliation(s)
- Florence Clavaguera
- Sorbonne Université, INSERM, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.
| | - Charles Duyckaerts
- Sorbonne Université, INSERM, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; AP-HP, Hôpital de la Pitié-Salpêtrière, Laboratoire de Neuropathologie R Escourolle, Paris, France
| | - Stéphane Haïk
- Sorbonne Université, INSERM, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; AP-HP, Hôpital de la Pitié-Salpêtrière, Laboratoire de Neuropathologie R Escourolle, Paris, France; AP-HP, Cellule Nationale de Référence des maladies de Creutzfeldt-Jakob, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
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194
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Wille H, Dorosh L, Amidian S, Schmitt-Ulms G, Stepanova M. Combining molecular dynamics simulations and experimental analyses in protein misfolding. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2020; 118:33-110. [PMID: 31928730 DOI: 10.1016/bs.apcsb.2019.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The fold of a protein determines its function and its misfolding can result in loss-of-function defects. In addition, for certain proteins their misfolding can lead to gain-of-function toxicities resulting in protein misfolding diseases such as Alzheimer's, Parkinson's, or the prion diseases. In all of these diseases one or more proteins misfold and aggregate into disease-specific assemblies, often in the form of fibrillar amyloid deposits. Most, if not all, protein misfolding diseases share a fundamental molecular mechanism that governs the misfolding and subsequent aggregation. A wide variety of experimental methods have contributed to our knowledge about misfolded protein aggregates, some of which are briefly described in this review. The misfolding mechanism itself is difficult to investigate, as the necessary timescale and resolution of the misfolding events often lie outside of the observable parameter space. Molecular dynamics simulations fill this gap by virtue of their intrinsic, molecular perspective and the step-by-step iterative process that forms the basis of the simulations. This review focuses on molecular dynamics simulations and how they combine with experimental analyses to provide detailed insights into protein misfolding and the ensuing diseases.
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Affiliation(s)
- Holger Wille
- Department of Biochemistry, University of Alberta, Edmonton, Canada; Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Canada; Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Canada
| | - Lyudmyla Dorosh
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada
| | - Sara Amidian
- Department of Biochemistry, University of Alberta, Edmonton, Canada; Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Canada
| | - Gerold Schmitt-Ulms
- Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
| | - Maria Stepanova
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada
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195
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Computational prediction and redesign of aberrant protein oligomerization. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2020; 169:43-83. [DOI: 10.1016/bs.pmbts.2019.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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196
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Candreva J, Chau E, Rice ME, Kim JR. Interactions between Soluble Species of β-Amyloid and α-Synuclein Promote Oligomerization while Inhibiting Fibrillization. Biochemistry 2019; 59:425-435. [PMID: 31854188 DOI: 10.1021/acs.biochem.9b00655] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aggregations of β-amyloid (Aβ) and α-synuclein (αS) into oligomeric and fibrillar assemblies are the pathological hallmarks of Alzheimer's and Parkinson's diseases, respectively. Although Aβ and αS affect different regions of the brain and are separated at the cellular level, there is evidence of their eventual interaction in the pathology of both disorders. Characterization of interactions of Aβ and αS at various stages of their aggregation pathways could reveal mechanisms and therapeutic targets for the prevention and cure of these neurodegenerative diseases. In this study, we comprehensively examined the interactions and their molecular manifestations using an array of characterization tools. We show for the first time that αS monomers and oligomers, but not αS fibrils, inhibit Aβ fibrillization while promoting oligomerization of Aβ monomers and stabilizing preformed Aβ oligomers via coassembly, as judged by Thioflavin T fluorescence, transmission electron microscopy, and SDS- and native-PAGE with fluorescently labeled peptides/proteins. In contrast, soluble Aβ species, such as monomers and oligomers, aggregate into fibrils, when incubated alone under the otherwise same condition. Our study provides evidence that the interactions with αS soluble species, responsible for the effects, are mediated primarily by the C-terminus of Aβ, when judged by competitive immunoassays using antibodies recognizing various fragments of Aβ. We also show that the C-terminus of Aβ is a primary site for its interaction with αS fibrils. Collectively, these data demonstrate aggregation state-specific interactions between αS and Aβ and offer insight into a molecular basis of synergistic biological effects between the two polypeptides.
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Affiliation(s)
- Jason Candreva
- Department of Chemical and Biomolecular Engineering , New York University , 6 MetroTech Center , Brooklyn , New York 11201 , United States
| | - Edward Chau
- Department of Chemical and Biomolecular Engineering , New York University , 6 MetroTech Center , Brooklyn , New York 11201 , United States
| | - Margaret E Rice
- Departments of Neurosurgery, and Neuroscience and Physiology , New York University School of Medicine , New York , New York 10016 , United States
| | - Jin Ryoun Kim
- Department of Chemical and Biomolecular Engineering , New York University , 6 MetroTech Center , Brooklyn , New York 11201 , United States
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197
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Altamirano-Bustamante MM, Altamirano-Bustamante NF, Larralde-Laborde M, Lara-Martínez R, Leyva-García E, Garrido-Magaña E, Rojas G, Jiménez-García LF, Revilla-Monsalve C, Altamirano P, Calzada-León R. Unpacking the aggregation-oligomerization-fibrillization process of naturally-occurring hIAPP amyloid oligomers isolated directly from sera of children with obesity or diabetes mellitus. Sci Rep 2019; 9:18465. [PMID: 31804529 PMCID: PMC6895187 DOI: 10.1038/s41598-019-54570-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 11/14/2019] [Indexed: 12/14/2022] Open
Abstract
The formation of amyloid oligomers and fibrils of the human islet amyloid polypeptide (hIAPP) has been linked with β- cell failure and death which causes the onset, progression, and comorbidities of diabetes. We begin to unpack the aggregation-oligomerization-fibrillization process of these oligomers taken from sera of pediatric patients. The naturally occurring or real hIAPP (not synthetic) amyloid oligomers (RIAO) were successfully isolated, we demonstrated the presence of homo (dodecamers, hexamers, and trimers) and hetero-RIAO, as well as several biophysical characterizations which allow us to learn from the real phenomenon taking place. We found that the aggregation/oligomerization process is active in the sera and showed that it happens very fast. The RIAO can form fibers and react with anti-hIAPP and anti-amyloid oligomers antibodies. Our results opens the epistemic horizon and reveal real differences between the four groups (Controls vs obesity, T1DM or T2DM) accelerating the process of understanding and discovering novel and more efficient prevention, diagnostic, transmission and therapeutic pathways.
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Affiliation(s)
- Myriam M Altamirano-Bustamante
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico.
| | | | - Mateo Larralde-Laborde
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | | | - Edgar Leyva-García
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | - Eulalia Garrido-Magaña
- UMAE Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | - Gerardo Rojas
- UMAE Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | | | - Cristina Revilla-Monsalve
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | - Perla Altamirano
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
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198
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Abstract
When protein/peptides aggregate, they usually form the amyloid state consisting of cross β-sheet structure built by repetitively stacked β-strands forming long fibrils. Amyloids are usually associated with disease including Alzheimer's. However, amyloid has many useful features. It efficiently transforms protein from the soluble to the insoluble state in an essentially two-state process, while its repetitive structure provides high stability and a robust prion-like replication mechanism. Accordingly, amyloid is used by nature in multifaceted and ingenious ways of life, ranging from bacteria and fungi to mammals. These include (1) Structure: Templating for small chemical molecules (Pmel17), biofilm formation in bacteria (curli), assisting aerial hyphae formation in streptomycetes (chaplins) or monolayer formation at a surface (hydrophobins). (2) Reservoirs: A storage state for peptide/proteins to protect them from their surroundings or vice versa (storage of peptide hormones in mammalian secretory granules or major basic protein in eosinophils). (3) Information carriers: The fungal immune system (HET-s prion in Podospora anserina, yeast prions) or long-term memory (e.g., mnemons in yeast, cytoplasmic polyadenylation element-binding protein in aplysia). Aggregation is also used to (4) "suppress" the function of the soluble protein (e.g., Cdc19 in yeast stress granules), or (5) "signaling" through formation of oligomers (e.g., HET-s prion, necroptosis-related proteins RIP1/RIP3). This review summarizes current knowledge on functional amyloids with a focus on the amyloid systems curli in bacteria, HET-s prion in P. anserina, and peptide hormone storage in mammals together with an attempt to highlight differences between functional and disease-associated amyloids.
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Affiliation(s)
- Daniel Otzen
- iNANO, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Roland Riek
- Laboratory of Physical Chemistry, Swiss Federal Institute of Technology, CH-8093 Zürich, Switzerland
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199
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Jayawardena BM, Jones MR, Hong Y, Jones CE. Copper ions trigger disassembly of neurokinin B functional amyloid and inhibit de novo assembly. J Struct Biol 2019; 208:107394. [DOI: 10.1016/j.jsb.2019.09.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/23/2019] [Accepted: 09/23/2019] [Indexed: 01/24/2023]
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200
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Solti K, Kuan WL, Fórizs B, Kustos G, Mihály J, Varga Z, Herberth B, Moravcsik É, Kiss R, Kárpáti M, Mikes A, Zhao Y, Imre T, Rochet JC, Aigbirhio F, Williams-Gray CH, Barker RA, Tóth G. DJ-1 can form β-sheet structured aggregates that co-localize with pathological amyloid deposits. Neurobiol Dis 2019; 134:104629. [PMID: 31669752 DOI: 10.1016/j.nbd.2019.104629] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 09/11/2019] [Accepted: 09/27/2019] [Indexed: 12/18/2022] Open
Abstract
The loss of native function of the DJ-1 protein has been linked to the development of Parkinson's (PD) and other neurodegenerative diseases. Here we show that DJ-1 aggregates into β-sheet structured soluble and fibrillar aggregates in vitro under physiological conditions and that this process is promoted by the oxidation of its catalytic Cys106 residue. This aggregation resulted in the loss of its native biochemical glyoxalase function and in addition oxidized DJ-1 aggregates were observed to localize within Lewy bodies, neurofibrillary tangles and amyloid plaques in human PD and Alzheimer's (AD) patients' post-mortem brain tissue. These findings suggest that the aggregation of DJ-1 may be a critical player in the development of the pathology of PD and AD and demonstrate that loss of DJ-1 function can happen through DJ-1 aggregation. This could then contribute to AD and PD disease onset and progression.
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Affiliation(s)
- Katalin Solti
- TTK-NAP B - Drug Discovery Research Group - Neurodegenerative Diseases, Institute of Organic Chemistry, Research Center for Natural Sciences, Budapest, Hungary
| | - Wei-Li Kuan
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Forvie Site, Robinson Way, Cambridge CB2 0PY, UK
| | - Balázs Fórizs
- TTK-NAP B - Drug Discovery Research Group - Neurodegenerative Diseases, Institute of Organic Chemistry, Research Center for Natural Sciences, Budapest, Hungary; Cantabio Pharmaceuticals, Palo Alto, CA, USA
| | | | - Judith Mihály
- Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences, Budapest, Hungary
| | - Zoltán Varga
- Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences, Budapest, Hungary
| | - Balázs Herberth
- TTK-NAP B - Drug Discovery Research Group - Neurodegenerative Diseases, Institute of Organic Chemistry, Research Center for Natural Sciences, Budapest, Hungary; Cantabio Pharmaceuticals, Palo Alto, CA, USA
| | | | - Róbert Kiss
- TTK-NAP B - Drug Discovery Research Group - Neurodegenerative Diseases, Institute of Organic Chemistry, Research Center for Natural Sciences, Budapest, Hungary
| | | | - Anna Mikes
- TTK-NAP B - Drug Discovery Research Group - Neurodegenerative Diseases, Institute of Organic Chemistry, Research Center for Natural Sciences, Budapest, Hungary
| | - Yanyan Zhao
- Molecular Imaging Chemistry Laboratory, Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Tímea Imre
- MS Metabolomic Research Laboratory, Institute of Organic Chemistry, Research Center for Natural Sciences, Budapest, Hungary
| | - Jean-Christophe Rochet
- Department of Medicinal Chemistry and Molecular Pharmacology and Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, Indiana, USA
| | - Franklin Aigbirhio
- Molecular Imaging Chemistry Laboratory, Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Caroline H Williams-Gray
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Forvie Site, Robinson Way, Cambridge CB2 0PY, UK
| | - Roger A Barker
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Forvie Site, Robinson Way, Cambridge CB2 0PY, UK
| | - Gergely Tóth
- TTK-NAP B - Drug Discovery Research Group - Neurodegenerative Diseases, Institute of Organic Chemistry, Research Center for Natural Sciences, Budapest, Hungary; Cantabio Pharmaceuticals, Palo Alto, CA, USA.
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