1
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Palmioli A, Airoldi C. An NMR Toolkit to Probe Amyloid Oligomer Inhibition in Neurodegenerative Diseases: From Ligand Screening to Dissecting Binding Topology and Mechanisms of Action. Chempluschem 2024:e202400243. [PMID: 38712695 DOI: 10.1002/cplu.202400243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 05/08/2024]
Abstract
The aggregation of amyloid peptides and proteins into toxic oligomers is a hallmark of neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, Machado-Joseph's disease, and transmissible spongiform encephalopathies. Inhibition of amyloid oligomers formation and interactions with biological counterparts, as well as the triggering of non-toxic amorphous aggregates, are strategies towards preventive interventions against these pathologies. NMR spectroscopy addresses the need for structural characterization of amyloid proteins and their aggregates, their binding to inhibitors, and rapid screening of compound libraries for ligand identification. Here we briefly discuss the solution experiments constituting the NMR spectroscopist's toolkit and provide examples of their application.
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Affiliation(s)
- Alessandro Palmioli
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, P.zza della Scienza 2, 20126, Milan, Italy
| | - Cristina Airoldi
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, P.zza della Scienza 2, 20126, Milan, Italy
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2
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Allen SG, Meade RM, White Stenner LL, Mason JM. Peptide-based approaches to directly target alpha-synuclein in Parkinson's disease. Mol Neurodegener 2023; 18:80. [PMID: 37940962 PMCID: PMC10633918 DOI: 10.1186/s13024-023-00675-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/27/2023] [Indexed: 11/10/2023] Open
Abstract
Peptides and their mimetics are increasingly recognised as drug-like molecules, particularly for intracellular protein-protein interactions too large for inhibition by small molecules, and inaccessible to larger biologics. In the past two decades, evidence associating the misfolding and aggregation of alpha-synuclein strongly implicates this protein in disease onset and progression of Parkinson's disease and related synucleinopathies. The subsequent formation of toxic, intracellular, Lewy body deposits, in which alpha-synuclein is a major component, is a key diagnostic hallmark of the disease. To reach their therapeutic site of action, peptides must both cross the blood-brain barrier and enter dopaminergic neurons to prevent the formation of these intracellular inclusions. In this review, we describe and summarise the current efforts made in the development of peptides and their mimetics to directly engage with alpha-synuclein with the intention of modulating aggregation, and importantly, toxicity. This is a rapidly expanding field with great socioeconomic impact; these molecules harbour significant promise as therapeutics, or as early biomarkers during prodromal disease stages, or both. As these are age-dependent conditions, an increasing global life expectancy means disease prevalence is rising. No current treatments exist to either prevent or slow disease progression. It is therefore crucial that drugs are developed for these conditions before health care and social care capacities become overrun.
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Affiliation(s)
- Scott G Allen
- Department of Life Sciences, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Richard M Meade
- Department of Life Sciences, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Lucy L White Stenner
- Department of Life Sciences, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Jody M Mason
- Department of Life Sciences, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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3
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Bloch DN, Sandre M, Ben Zichri S, Masato A, Kolusheva S, Bubacco L, Jelinek R. Scavenging neurotoxic aldehydes using lysine carbon dots. NANOSCALE ADVANCES 2023; 5:1356-1367. [PMID: 36866263 PMCID: PMC9972859 DOI: 10.1039/d2na00804a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Reactive aldehydes generated in cells and tissues are associated with adverse physiological effects. Dihydroxyphenylacetaldehyde (DOPAL), the biogenic aldehyde enzymatically produced from dopamine, is cytotoxic, generates reactive oxygen species, and triggers aggregation of proteins such as α-synuclein implicated in Parkinson's disease. Here, we demonstrate that carbon dots (C-dots) prepared from lysine as the carbonaceous precursor bind DOPAL molecules through interactions between the aldehyde units and amine residues on the C-dot surface. A set of biophysical and in vitro experiments attests to attenuation of the adverse biological activity of DOPAL. In particular, we show that the lysine-C-dots inhibit DOPAL-induced α-synuclein oligomerization and cytotoxicity. This work underlines the potential of lysine-C-dots as an effective therapeutic vehicle for aldehyde scavenging.
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Affiliation(s)
- Daniel Nir Bloch
- Department of Chemistry, Ben Gurion University of the Negev Israel
| | - Michele Sandre
- Department of Neuroscience, University of Padova Italy
- Centro Studi per la Neurodegenerazione (CESNE), University of Padova Italy
| | - Shani Ben Zichri
- Department of Chemistry, Ben Gurion University of the Negev Israel
| | - Anna Masato
- Centro Studi per la Neurodegenerazione (CESNE), University of Padova Italy
- Department of Biology, University of Padova Italy
| | - Sofiya Kolusheva
- Ilse Katz Institute for Nanoscale Science and Technology (IKI), Ben Gurion University of the Negev Israel
| | - Luigi Bubacco
- Centro Studi per la Neurodegenerazione (CESNE), University of Padova Italy
- Department of Biology, University of Padova Italy
| | - Raz Jelinek
- Department of Chemistry, Ben Gurion University of the Negev Israel
- Ilse Katz Institute for Nanoscale Science and Technology (IKI), Ben Gurion University of the Negev Israel
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4
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Naren P, Cholkar A, Kamble S, Khan SS, Srivastava S, Madan J, Mehra N, Tiwari V, Singh SB, Khatri DK. Pathological and Therapeutic Advances in Parkinson's Disease: Mitochondria in the Interplay. J Alzheimers Dis 2023; 94:S399-S428. [PMID: 36093711 PMCID: PMC10473111 DOI: 10.3233/jad-220682] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2022] [Indexed: 11/15/2022]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative illness majorly affecting the population between the ages of 55 to 65 years. Progressive dopaminergic neuronal loss and the collective assemblage of misfolded alpha-synuclein in the substantia nigra, remain notable neuro-pathological hallmarks of the disease. Multitudes of mechanistic pathways have been proposed in attempts to unravel the pathogenesis of PD but still, it remains elusive. The convergence of PD pathology is found in organelle dysfunction where mitochondria remain a major contributor. Mitochondrial processes like bioenergetics, mitochondrial dynamics, and mitophagy are under strict regulation by the mitochondrial genome and nuclear genome. These processes aggravate neurodegenerative activities upon alteration through neuroinflammation, oxidative damage, apoptosis, and proteostatic stress. Therefore, the mitochondria have grabbed a central position in the patho-mechanistic exploration of neurodegenerative diseases like PD. The management of PD remains a challenge to physicians to date, due to the variable therapeutic response of patients and the limitation of conventional chemical agents which only offer symptomatic relief with minimal to no disease-modifying effect. This review describes the patho-mechanistic pathways involved in PD not only limited to protein dyshomeostasis and oxidative stress, but explicit attention has been drawn to exploring mechanisms like organelle dysfunction, primarily mitochondria and mitochondrial genome influence, while delineating the newer exploratory targets such as GBA1, GLP, LRRK2, and miRNAs and therapeutic agents targeting them.
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Affiliation(s)
- Padmashri Naren
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
| | - Anjali Cholkar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
| | - Suchita Kamble
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
| | - Sabiya Samim Khan
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
| | - Saurabh Srivastava
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Telangana, India
| | - Jitender Madan
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Telangana, India
| | - Neelesh Mehra
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Telangana, India
| | - Vinod Tiwari
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (B.H.U.) Varanasi (U.P.), India
| | - Shashi Bala Singh
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
| | - Dharmendra Kumar Khatri
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
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5
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Rafiei Y, Salmani B, Mirzaei-Behbahani B, Taleb M, Meratan AA, Ramezani M, Nikfarjam N, Becker S, Rezaei-Ghaleh N. Polyphenols-Based Nanosheets of Propolis Modulate Cytotoxic Amyloid Fibril Assembly of α-Synuclein. ACS Chem Neurosci 2022; 13:3168-3179. [PMID: 36314062 DOI: 10.1021/acschemneuro.2c00465] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Natural compounds with anti-aggregation capacity are increasingly recognized as viable candidates against neurodegenerative diseases. Recently, the polyphenolic fraction of propolis (PFP), a complex bee product, has been shown to inhibit amyloid aggregation of a model protein especially in the nanosheet form. Here, we examine the aggregation-modulating effects of the PFP nanosheets on α-synuclein (α-syn), an intrinsically disordered protein involved in the pathogenesis of Parkinson's disease. Based on a range of biophysical data including intrinsic and extrinsic fluorescence, circular dichroism (CD) data, and nuclear magnetic resonance spectroscopy, we propose a model for the interaction of α-syn with PFP nanosheets, where the positively charged N-terminal and the middle non-amyloid component regions of α-syn act as the main binding sites with the negatively charged PFP nanosheets. The Thioflavin T (ThT) fluorescence, Congo red absorbance, and CD data reveal a prominent dose-dependent inhibitory effect of PFP nanosheets on α-syn amyloid aggregation, and the microscopy images and MTT assay data suggest that the PFP nanosheets redirect α-syn aggregation toward nontoxic off-pathway oligomers. When preformed α-syn amyloid fibrils are present, fluorescence images show co-localization of PFP nanosheets and ThT, further confirming the binding of PFP nanosheets with α-syn amyloid fibrils. Taken together, our results demonstrate the binding and anti-aggregation activity of PFP nanosheets in a disease-related protein system and propose them as potential nature-based tools for probing and targeting pathological protein aggregates in neurodegenerative diseases.
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Affiliation(s)
- Yasin Rafiei
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Bahram Salmani
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Behnaz Mirzaei-Behbahani
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Mahshid Taleb
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Ali Akbar Meratan
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Mohammad Ramezani
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Nasser Nikfarjam
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Stefan Becker
- Department of NMR-Based Structural Biology, Max Planck Institute for Multidisciplinary Sciences, Am Faßberg 11, Göttingen D-37077, Germany
| | - Nasrollah Rezaei-Ghaleh
- Department of NMR-Based Structural Biology, Max Planck Institute for Multidisciplinary Sciences, Am Faßberg 11, Göttingen D-37077, Germany.,Institute of Physical Biology, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, Düsseldorf D-40225, Germany.,Institute of Biological Information Processing (IBI-7): Structural Biochemistry, Forschungszentrum Jülich, Wilhelm-Johnen-Strasse, Jülich D-52428, Germany
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6
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Pirhaghi M, Frank SA, Alam P, Nielsen J, Sereikaite V, Gupta A, Strømgaard K, Andreasen M, Sharma D, Saboury AA, Otzen DE. A penetratin-derived peptide reduces the membrane permeabilization and cell toxicity of α-synuclein oligomers. J Biol Chem 2022; 298:102688. [PMID: 36370848 PMCID: PMC9791135 DOI: 10.1016/j.jbc.2022.102688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/31/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
Parkinson's disease is a neurodegenerative movement disorder associated with the intracellular aggregation of α-synuclein (α-syn). Cytotoxicity is mainly associated with the oligomeric species (αSOs) formed at early stages in α-syn aggregation. Consequently, there is an intense focus on the discovery of novel inhibitors such as peptides to inhibit oligomer formation and toxicity. Here, using peptide arrays, we identified nine peptides with high specificity and affinity for αSOs. Of these, peptides p194, p235, and p249 diverted α-syn aggregation from fibrils to amorphous aggregates with reduced β-structures and increased random coil content. However, they did not reduce αSO cytotoxicity and permeabilization of large anionic unilamellar vesicles. In parallel, we identified a non-self-aggregating peptide (p216), derived from the cell-penetrating peptide penetratin, which showed 12-fold higher binding affinity to αSOs than to α-syn monomers (Kdapp 2.7 and 31.2 μM, respectively). p216 reduced αSOs-induced large anionic unilamellar vesicle membrane permeability at 10-1 to 10-3 mg/ml by almost 100%, was not toxic to SH-SY5Y cells, and reduced αSOs cytotoxicity by about 20%. We conclude that p216 is a promising starting point from which to develop peptides targeting toxic αSOs in Parkinson's disease.
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Affiliation(s)
- Mitra Pirhaghi
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, Denmark; Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Signe Andrea Frank
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, Denmark
| | - Parvez Alam
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, Denmark; Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - Janni Nielsen
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, Denmark
| | - Vita Sereikaite
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen Ø, Denmark
| | - Arpit Gupta
- Council of Scientific and Industrial Research-Institute of Microbial Technology, Chandigarh, India
| | - Kristian Strømgaard
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen Ø, Denmark
| | - Maria Andreasen
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - Deepak Sharma
- Council of Scientific and Industrial Research-Institute of Microbial Technology, Chandigarh, India; G.N. Ramachandran Protein Centre, Academy of Scientific & Innovative Research, Chennai, India
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.
| | - Daniel Erik Otzen
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Aarhus C, Denmark.
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7
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Meyer N, Janot JM, Torrent J, Balme S. Real-Time Fast Amyloid Seeding and Translocation of α-Synuclein with a Nanopipette. ACS CENTRAL SCIENCE 2022; 8:441-448. [PMID: 35505874 PMCID: PMC9052795 DOI: 10.1021/acscentsci.1c01404] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Indexed: 06/14/2023]
Abstract
The detection to α-synuclein (αS) assemblies as a biomarker of synucleinopathies is an important challenge for further development of an early diagnosis tool. Here, we present proof of concept real-time fast amyloid seeding and translocation (RT-FAST) based on a nanopipette that combines in one unique system a reaction vessel to accelerate the seed amplification and nanopore sensor for single-molecule αS assembly detection. RT-FAST allows the detection of the presence αS seeds WT and A53T variant in a given sample in only 90 min by adding a low quantity (35 μL at 100 nM) of recombinant αS for amplification. It also shows cross-seeding aggregation by adding mixing seeds A53T with WT monomers. Finally, we establish the dependence between the capture rate of aggregates by the nanopore sensor and the initial seed concentration from 200 pM to 2 pM, which promises further development toward a quantitative analysis of the initial seed concentration.
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Affiliation(s)
- Nathan Meyer
- Institut
Européen des Membranes, UMR5635 University of Montpellier ENCSM
CNRS, Place Eugène
Bataillon, 34095 Montpellier cedex 5, France
- INM,
University of Montpellier, INSERM, 34091 Montpellier, France
| | - Jean-Marc Janot
- Institut
Européen des Membranes, UMR5635 University of Montpellier ENCSM
CNRS, Place Eugène
Bataillon, 34095 Montpellier cedex 5, France
| | - Joan Torrent
- INM,
University of Montpellier, INSERM, 34091 Montpellier, France
| | - Sébastien Balme
- Institut
Européen des Membranes, UMR5635 University of Montpellier ENCSM
CNRS, Place Eugène
Bataillon, 34095 Montpellier cedex 5, France
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8
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Natural Alkaloid Compounds as Inhibitors for Alpha-Synuclein Seeded Fibril Formation and Toxicity. Molecules 2021; 26:molecules26123736. [PMID: 34205249 PMCID: PMC8234408 DOI: 10.3390/molecules26123736] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/12/2021] [Accepted: 06/15/2021] [Indexed: 01/26/2023] Open
Abstract
The accumulation and aggregation of α-synuclein (α-syn) is the main pathologic event in Parkinson’s disease (PD), dementia with Lewy bodies, and multiple system atrophy. α-Syn-seeded fibril formation and its induced toxicity occupy a major role in PD pathogenesis. Thus, assessing compounds that inhibit this seeding process is considered a key towards the therapeutics of synucleinopathies. Using biophysical and biochemical techniques and seeding-dependent cell viability assays, we screened a total of nine natural compounds of alkaloid origin extracted from Chinese medicinal herbs. Of these compounds, synephrine, trigonelline, cytisine, harmine, koumine, peimisine, and hupehenine exhibited in vitro inhibition of α-syn-seeded fibril formation. Furthermore, using cell viability assays, six of these compounds inhibited α-syn-seeding-dependent toxicity. These six potent inhibitors of amyloid fibril formation and toxicity caused by the seeding process represent a promising therapeutic strategy for the treatment of PD and other synucleinopathies.
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9
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Popova B, Wang D, Rajavel A, Dhamotharan K, Lázaro DF, Gerke J, Uhrig JF, Hoppert M, Outeiro TF, Braus GH. Identification of Two Novel Peptides That Inhibit α-Synuclein Toxicity and Aggregation. Front Mol Neurosci 2021; 14:659926. [PMID: 33912013 PMCID: PMC8072481 DOI: 10.3389/fnmol.2021.659926] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/16/2021] [Indexed: 12/02/2022] Open
Abstract
Aggregation of α-synuclein (αSyn) into proteinaceous deposits is a pathological hallmark of a range of neurodegenerative diseases including Parkinson’s disease (PD). Numerous lines of evidence indicate that the accumulation of toxic oligomeric and prefibrillar αSyn species may underpin the cellular toxicity and spread of pathology between cells. Therefore, aggregation of αSyn is considered a priority target for drug development, as aggregation inhibitors are expected to reduce αSyn toxicity and serve as therapeutic agents. Here, we used the budding yeast S. cerevisiae as a platform for the identification of short peptides that inhibit αSyn aggregation and toxicity. A library consisting of approximately one million peptide variants was utilized in two high-throughput screening approaches for isolation of library representatives that reduce αSyn-associated toxicity and aggregation. Seven peptides were isolated that were able to suppress specifically αSyn toxicity and aggregation in living cells. Expression of the peptides in yeast reduced the accumulation of αSyn-induced reactive oxygen species and increased cell viability. Next, the peptides were chemically synthesized and probed for their ability to modulate αSyn aggregation in vitro. Two synthetic peptides, K84s and K102s, of 25 and 19 amino acids, respectively, significantly inhibited αSyn oligomerization and aggregation at sub-stoichiometric molar ratios. Importantly, K84s reduced αSyn aggregation in human cells. These peptides represent promising αSyn aggregation antagonists for the development of future therapeutic interventions.
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Affiliation(s)
- Blagovesta Popova
- Department of Molecular Microbiology and Genetics, Institute for Microbiology and Genetics, University of Goettingen, Göttingen, Germany
| | - Dan Wang
- Department of Molecular Microbiology and Genetics, Institute for Microbiology and Genetics, University of Goettingen, Göttingen, Germany
| | - Abirami Rajavel
- Department of Molecular Microbiology and Genetics, Institute for Microbiology and Genetics, University of Goettingen, Göttingen, Germany
| | - Karthikeyan Dhamotharan
- Department of Molecular Microbiology and Genetics, Institute for Microbiology and Genetics, University of Goettingen, Göttingen, Germany
| | - Diana F Lázaro
- Department of Experimental Neurodegeneration, Center for Biostructural Imaging of Neurodegeneration, University Medical Center Goettingen, Göttingen, Germany
| | - Jennifer Gerke
- Department of Molecular Microbiology and Genetics, Institute for Microbiology and Genetics, University of Goettingen, Göttingen, Germany
| | - Joachim F Uhrig
- Department of Plant Molecular Biology and Physiology, University of Goettingen, Göttingen, Germany
| | - Michael Hoppert
- Department of General Microbiology, Institute of Microbiology and Genetics, University of Goettingen, Göttingen, Germany
| | - Tiago F Outeiro
- Department of Experimental Neurodegeneration, Center for Biostructural Imaging of Neurodegeneration, University Medical Center Goettingen, Göttingen, Germany.,Max Planck Institute for Experimental Medicine, Göttingen, Germany.,Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Framlington Place, Newcastle upon Tyne, United Kingdom.,Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Göttingen, Germany
| | - Gerhard H Braus
- Department of Molecular Microbiology and Genetics, Institute for Microbiology and Genetics, University of Goettingen, Göttingen, Germany
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