1
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Klawa SJ, Lee M, Riker KD, Jian T, Wang Q, Gao Y, Daly ML, Bhonge S, Childers WS, Omosun TO, Mehta AK, Lynn DG, Freeman R. Uncovering supramolecular chirality codes for the design of tunable biomaterials. Nat Commun 2024; 15:788. [PMID: 38278785 PMCID: PMC10817930 DOI: 10.1038/s41467-024-45019-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/12/2024] [Indexed: 01/28/2024] Open
Abstract
In neurodegenerative diseases, polymorphism and supramolecular assembly of β-sheet amyloids are implicated in many different etiologies and may adopt either a left- or right-handed supramolecular chirality. Yet, the underlying principles of how sequence regulates supramolecular chirality remains unknown. Here, we characterize the sequence specificity of the central core of amyloid-β 42 and design derivatives which enable chirality inversion at biologically relevant temperatures. We further find that C-terminal modifications can tune the energy barrier of a left-to-right chiral inversion. Leveraging this design principle, we demonstrate how temperature-triggered chiral inversion of peptides hosting therapeutic payloads modulates the dosed release of an anticancer drug. These results suggest a generalizable approach for fine-tuning supramolecular chirality that can be applied in developing treatments to regulate amyloid morphology in neurodegeneration as well as in other disease states.
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Affiliation(s)
- Stephen J Klawa
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Michelle Lee
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
| | - Kyle D Riker
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Tengyue Jian
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
- Broad Pharm, San Diego, California, 92121, USA
| | - Qunzhao Wang
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Yuan Gao
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Margaret L Daly
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Shreeya Bhonge
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - W Seth Childers
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Tolulope O Omosun
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
- U.S. Department of Justice, Chicago, IL, 60603, USA
| | - Anil K Mehta
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
- The National High Magnetic Field Laboratory, University of Florida, Gainesville, FL, 32611, USA
| | - David G Lynn
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA.
- Department of Biology, Emory University, Atlanta, GA, 30322, USA.
| | - Ronit Freeman
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA.
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2
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Dohoney RA, Joseph JA, Baysah C, Thomas AG, Siwakoti A, Ball TD, Kumar S. "Common-Precursor" Protein Mimetic Approach to Rescue Aβ Aggregation-Mediated Alzheimer's Phenotypes. ACS Chem Biol 2023. [PMID: 37367833 DOI: 10.1021/acschembio.3c00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Abberent protein-protein interactions (aPPIs) are associated with an array of pathological conditions, which make them important therapeutic targets. The aPPIs are mediated via specific chemical interactions that spread over a large and hydrophobic surface. Therefore, ligands that can complement the surface topography and chemical fingerprints could manipulate aPPIs. Oligopyridylamides (OPs) are synthetic protein mimetics that have been shown to manipulate aPPIs. However, the previous OP library used to disrupt these aPPIs was moderate in number (∼30 OPs) with very limited chemical diversity. The onus is on the laborious and time-consuming synthetic pathways with multiple chromatography steps. We have developed a novel chromatography-free technique to synthesize a highly diverse chemical library of OPs using a "common-precursor" approach. We significantly expanded the chemical diversity of OPs using a chromatography-free high-yielding method. To validate our novel approach, we have synthesized an OP with identical chemical diversity to a pre-existing OP-based potent inhibitor of Aβ aggregation, a process central to Alzheimer's disease (AD). The newly synthesized OP ligand (RD242) was very potent in inhibiting Aβ aggregation and rescuing AD phenotypes in an in vivo model. Moreover, RD242 was very effective in rescuing AD phenotypes in a post-disease onset AD model. We envision that our "common-precursor" synthetic approach will have tremendous potential as it is expandable for other oligoamide scaffolds to enhance affinity for disease-relevant targets.
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Affiliation(s)
- Ryan A Dohoney
- The Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
- The Knoebel Institute for Healthy Aging, University of Denver, Denver, Colorado 80210, United States
| | - Johnson A Joseph
- The Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
- The Knoebel Institute for Healthy Aging, University of Denver, Denver, Colorado 80210, United States
| | - Charles Baysah
- The Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
- The Knoebel Institute for Healthy Aging, University of Denver, Denver, Colorado 80210, United States
| | - Alexandra G Thomas
- The Knoebel Institute for Healthy Aging, University of Denver, Denver, Colorado 80210, United States
- The Department of Biological Sciences, University of Denver, Denver, Colorado 80210, United States
| | - Apshara Siwakoti
- The Knoebel Institute for Healthy Aging, University of Denver, Denver, Colorado 80210, United States
- The Department of Biological Sciences, University of Denver, Denver, Colorado 80210, United States
| | - Tyler D Ball
- The Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
- The Knoebel Institute for Healthy Aging, University of Denver, Denver, Colorado 80210, United States
| | - Sunil Kumar
- The Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
- The Knoebel Institute for Healthy Aging, University of Denver, Denver, Colorado 80210, United States
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3
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Li G, Jeon CK, Ma M, Jia Y, Zheng Z, Delafield DG, Lu G, Romanova EV, Sweedler JV, Ruotolo BT, Li L. Site-specific chirality-conferred structural compaction differentially mediates the cytotoxicity of Aβ42. Chem Sci 2023; 14:5936-5944. [PMID: 37293657 PMCID: PMC10246695 DOI: 10.1039/d3sc00678f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 05/06/2023] [Indexed: 06/10/2023] Open
Abstract
Growing evidence supports the confident association between distinct amyloid beta (Aβ) isoforms and Alzheimer's Disease (AD) pathogenesis. As such, critical investigations seeking to uncover the translational factors contributing to Aβ toxicity represent a venture of significant value. Herein, we comprehensively assess full-length Aβ42 stereochemistry, with a specific focus on models that consider naturally-occurring isomerization of Asp and Ser residues. We customize various forms of d-isomerized Aβ as natural mimics, ranging from fragments containing a single d residue to full length Aβ42 that includes multiple isomerized residues, systematically evaluating their cytotoxicity against a neuronal cell line. Combining multidimensional ion mobility-mass spectrometry experimental data with replica exchange molecular dynamics simulations, we confirm that co-d-epimerization at Asp and Ser residues within Aβ42 in both N-terminal and core regions effectively reduces its cytotoxicity. We provide evidence that this rescuing effect is associated with the differential and domain-specific compaction and remodeling of Aβ42 secondary structure.
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Affiliation(s)
- Gongyu Li
- State Key Laboratory of Pharmaceutical Chemical Biology, Research Center for Analytical Science and Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 China
- Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192 China
| | - Chae Kyung Jeon
- Department of Chemistry, University of Michigan Ann Arbor MI 48109 USA
| | - Min Ma
- School of Pharmacy and Department of Chemistry, University of Wisconsin-Madison 777 Highland Ave. Madison WI 53705 USA
| | - Yifei Jia
- State Key Laboratory of Pharmaceutical Chemical Biology, Research Center for Analytical Science and Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 China
| | - Zhen Zheng
- School of Pharmacy, Tianjin Medical University Tianjin 300070 China
| | - Daniel G Delafield
- School of Pharmacy and Department of Chemistry, University of Wisconsin-Madison 777 Highland Ave. Madison WI 53705 USA
| | - Gaoyuan Lu
- School of Pharmacy and Department of Chemistry, University of Wisconsin-Madison 777 Highland Ave. Madison WI 53705 USA
| | - Elena V Romanova
- Department of Chemistry and The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA
| | - Jonathan V Sweedler
- Department of Chemistry and The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA
| | - Brandon T Ruotolo
- Department of Chemistry, University of Michigan Ann Arbor MI 48109 USA
| | - Lingjun Li
- School of Pharmacy and Department of Chemistry, University of Wisconsin-Madison 777 Highland Ave. Madison WI 53705 USA
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4
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Gao W, Li Y, Xu W, Mei J, Wang C, Sajjad A, Ai H. Inhibitory Mechanisms of Three Modified Small Molecules on the Misfolding of Cu
2+
‐Aβ42 Complex in Different pH Conditions: Insights from MD/QM Studies. ChemistrySelect 2022. [DOI: 10.1002/slct.202202217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wenqi Gao
- School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 China
| | - Ye Li
- School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 China
| | - Wen Xu
- School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 China
| | - Jinfei Mei
- School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 China
| | - Chuanbo Wang
- School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 China
| | - Ahmad Sajjad
- School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 China
| | - Hongqi Ai
- School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 China
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5
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Chikugo A, Irie Y, Tsukano C, Uchino A, Maki T, Kume T, Kawase T, Hirose K, Kageyama Y, Tooyama I, Irie K. Optimization of the Linker Length in the Dimer Model of E22P-Aβ40 Tethered at Position 38. ACS Chem Neurosci 2022; 13:2913-2923. [PMID: 36095282 DOI: 10.1021/acschemneuro.2c00436] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Since amyloid β (Aβ) oligomers are more cytotoxic than fibrils, various dimer models have been synthesized. We focused on the C-terminal region that could form a hydrophobic core in the aggregation process and identified a toxic conformer-restricted dimer model (E22P,G38DAP-Aβ40 dimer) with an l,l-2,6-diaminopimelic acid linker (n = 3) at position 38, which exhibited moderate cytotoxicity. We synthesized four additional linkers (n = 2, 4, 5, 7) to determine the most appropriate distance between the two Aβ40 monomers for a toxic dimer model. Each di-Fmoc-protected two-valent amino acid was synthesized from a corresponding dialdehyde or cycloalkene followed by ozonolysis, using a Horner-Wadsworth-Emmons reaction and asymmetric hydrogenation. Then, the corresponding Aβ40 dimer models with these linkers at position 38 were synthesized using the solid-phase Fmoc strategy. Their cytotoxicity toward SH-SY5Y cells suggested that the shorter the linker length, the stronger the cytotoxicity. Particularly, the E22P,G38DAA-Aβ40 dimer (n = 2) formed protofibrillar aggregates and exhibited the highest cytotoxicity, equivalent to E22P-Aβ42, the most cytotoxic analogue of Aβ42. Ion mobility-mass spectrometry (IM-MS) measurement indicated that all dimer models except the E22P,G38DAA-Aβ40 dimer existed as stable oligomers (12-24-mer). NativePAGE analysis supported the IM-MS data, but larger oligomers (30-150-mer) were also detected after a 24 h incubation. Moreover, E22P,G38DAA-Aβ40, E22P,G38DAP-Aβ40, and E22P,G38DAZ-Aβ40 (n = 5) dimers suppressed long-term potentiation (LTP). Overall, the ability to form fibrils with cross β-sheet structures was key to achieving cytotoxicity, and forming stable oligomers less than 150-mer did not correlate with cytotoxicity and LTP suppression.
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Affiliation(s)
- Ayaka Chikugo
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto606-8502, Japan
| | - Yumi Irie
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto606-8502, Japan
| | - Chihiro Tsukano
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto606-8502, Japan
| | - Ayumi Uchino
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto606-8502, Japan
| | - Takahito Maki
- Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Sciences, University of Toyama, Toyama930-0194, Japan
| | - Toshiaki Kume
- Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Sciences, University of Toyama, Toyama930-0194, Japan
| | | | | | - Yusuke Kageyama
- Molecular Neuroscience Research Center, Shiga University of Medical Sciences, Shiga520-2192, Japan
| | - Ikuo Tooyama
- Molecular Neuroscience Research Center, Shiga University of Medical Sciences, Shiga520-2192, Japan
| | - Kazuhiro Irie
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto606-8502, Japan
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6
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Uchino A, Irie Y, Tsukano C, Kawase T, Hirose K, Kageyama Y, Tooyama I, Yanagita RC, Irie K. Synthesis and Characterization of Propeller- and Parallel-Type Full-Length Amyloid β40 Trimer Models. ACS Chem Neurosci 2022; 13:2517-2528. [PMID: 35930616 DOI: 10.1021/acschemneuro.2c00363] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Oligomers of the amyloid β (Aβ) protein play a critical role in the pathogenesis of Alzheimer's disease. However, their heterogeneity and lability deter the identification of their tertiary structures and mechanisms of action. Aβ trimers and Aβ dimers may represent the smallest aggregation unit with cytotoxicity. Although propeller-type trimer models of E22P-Aβ40 tethered by an aromatic linker have recently been synthesized, they unexpectedly exhibited little cytotoxicity. To increase the flexibility of trimeric propeller-type models, we designed and synthesized trimer models with an alkyl linker, tert-butyltris-l-alanine (tButA), at position 36 or 38. In addition, we synthesized two parallel-type trimer models tethered at position 38 using alkyl linkers of different lengths, α,α-di-l-norvalyl-l-glycine (di-nV-Gly) and α,α-di-l-homonorleucyl-l-glycine (di-hnL-Gly), based on the previously reported toxic dimer model. The propeller-type E22P,V36tButA-Aβ40 trimer (4), which was designed to mimic the C-terminal anti-parallel β-sheet structures proposed by the structural analysis of 150 kDa oligomers of Aβ42, and the parallel-type E22P,G38di-nV-Gly-Aβ40 trimer (6) showed significant cytotoxicity against SH-SY5Y cells and aggregative ability to form protofibrillar species. In contrast, the E22P,G38tButA-Aβ40 trimer (5) and E22P,G38di-hnL-Gly-Aβ40 trimer (7) exhibited weak cytotoxicity, though they formed quasi-stable oligomers observed by ion mobility-mass spectrometry and native polyacrylamide gel electrophoresis. These results suggest that 4 and 6 could have some phase of the structure of toxic Aβ oligomers with a C-terminal hydrophobic core and that the conformation and/or aggregation process rather than the formation of stable oligomers contribute to the induction of cytotoxicity.
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Affiliation(s)
- Ayumi Uchino
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Yumi Irie
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Chihiro Tsukano
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | | | | | - Yusuke Kageyama
- Molecular Neuroscience Research Center, Shiga University of Medical Sciences, Shiga 520-2192, Japan
| | - Ikuo Tooyama
- Molecular Neuroscience Research Center, Shiga University of Medical Sciences, Shiga 520-2192, Japan
| | - Ryo C Yanagita
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Kagawa 761-0795, Japan
| | - Kazuhiro Irie
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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7
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Foley AR, Raskatov J. AN ENANTIOMERIC FRAGMENT PAIR (EFP) APPROACH FOR THE STUDY OF CELLULAR UPTAKE OF INTRINSICALLY DISORDERED PROTEINS. Chembiochem 2022; 23:e202200146. [PMID: 35417609 DOI: 10.1002/cbic.202200146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/10/2022] [Indexed: 11/10/2022]
Abstract
The study of intrinsically disordered and amyloidogenic proteins poses a major challenge to researchers: the propensity of the system to aggregate and to form amyloid fibrils and deposits . This intrinsic nature limits the way amyloids can be studied and increases the level of complexity of the techniques needed to study the system of interest. Recent reports suggest that cellular recognition and internalization of pre-fibrillary species of amyloidogenic peptides and proteins may initiate some of its toxic actions. Therefore, developing novels tools to facilitate the understanding and determination of the interactions between intrinsically disordered proteins and the cellular membrane is becoming increasingly valuable. Here, we present and propose an approach for the study of the interactions of intrinsically disordered proteins with the cellular surface based on the use of enantiomeric fragment pairs (EFPs). By following a stepwise methodology in which the amyloidogenic peptide or protein is fragmented into specific segments, we show how this approach can be exploited to differentiate between different types of cellular uptake, to determine the degree of receptor-mediated cellular internalization of intrinsically disordered peptides and proteins, and to pinpoint the specific regions within the amino acid sequence responsible for the cellular recognition. Adopting this approach overcomes aggregation-related challenges and offers a particularly well-suited platform for the elucidation of receptor-intermediated recognition, uptake, and toxicity.
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Affiliation(s)
| | - Jevgenij Raskatov
- UCSC, Chemistry and Biochemistry, 1156 High Street, 95064, Santa Cruz, UNITED STATES
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8
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Matsushima Y, Irie Y, Kageyama Y, Bellier JP, Tooyama I, Maki T, Kume T, Yanagita RC, Irie K. Structure optimization of the toxic conformation model of amyloid β42 by intramolecular disulfide bond formation. Chembiochem 2022; 23:e202200029. [PMID: 35165998 DOI: 10.1002/cbic.202200029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/14/2022] [Indexed: 11/07/2022]
Abstract
Amyloid β (Aβ) oligomers play a critical role in the pathology of Alzheimer's disease. Recently, we reported that a conformation-restricted Aβ42 with an intramolecular disulfide bond through cysteine residues at positions 17/28 formed stable oligomers with potent cytotoxicity. To further optimize this compound as a toxic conformer model, we synthesized three analogs with a combination of cysteine and homocysteine at positions 17/28. The analogs with Cys-Cys, Cys-homoCys, or homoCys-Cys, but not the homoCys-homoCys analog, exhibited potent cytotoxicity against SH-SY5Y and THP-1 cells even at 10 nM. In contrast, the cytotoxicity of conformation-restricted analogs at positions 16/29 or 18/27 was significantly weaker than that of wild-type Aβ42. Furthermore, a thioflavin-T assay, non-denaturing gel electrophoresis, and morphological study suggested that the majority of these conformation-restricted analogs existed in an oligomeric state in cell culture medium, indicating that the toxic conformation of Aβ42, rather than the oligomeric state, is essential to induce cytotoxicity.
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Affiliation(s)
- Yuka Matsushima
- Kyoto University Graduate School of Agriculture Faculty of Agriculture: Kyoto Daigaku Nogaku Kenkyuka Nogakubu, Division of Food Science and Biotechnology, JAPAN
| | - Yumi Irie
- Kyoto University Graduate School of Agriculture Faculty of Agriculture: Kyoto Daigaku Nogaku Kenkyuka Nogakubu, Division of Food Science and Biotechnology, JAPAN
| | - Yusuke Kageyama
- Shiga University of Medical Science: Shiga Ika Daigaku, Molecular Neuroscience Research Center, JAPAN
| | - Jean-Pierre Bellier
- Shiga University of Medical Science: Shiga Ika Daigaku, Molecular Neuroscience Research Center, JAPAN
| | - Ikuo Tooyama
- Shiga University of Medical Science: Shiga Ika Daigaku, Molecular Neuroscience Research Center, JAPAN
| | - Takahito Maki
- University of Toyama: Toyama Daigaku, Department of Applied Pharmacology, JAPAN
| | - Toshiaki Kume
- University of Toyama: Toyama Daigaku, Department of Applied Pharmacology, JAPAN
| | - Ryo C Yanagita
- Kagawa University Faculty of Agriculture Graduate School of Agriculture: Kagawa Daigaku Nogakubu Daigakuin Nogaku Kenkyuka, Department of Applied Biological Sciences, JAPAN
| | - Kazuhiro Irie
- Kyoto University Graduate School of Agriculture Faculty of Agriculture: Kyoto Daigaku Nogaku Kenkyuka Nogakubu, Division of Food Science and Biotechnology, Kitashirakawa Oiwake-cho, Sakyo-ku, 606-8502, Kyoto, JAPAN
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9
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Zhou Z, Gu YQ, Wang HX. Artificial Chiral Interfaces against Amyloid-β Peptide Aggregation: Research Progress and Challenges. ACS Chem Neurosci 2021; 12:4236-4248. [PMID: 34724384 DOI: 10.1021/acschemneuro.1c00544] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by an imbalance between the production and clearance of amyloid-β (Aβ) species. AD not only influences the life quality of the patients but also heavily burdens the families and society. Therefore, it is an urgent mission to research and develop some new anti-amyloid aggregation drugs. In recent years, there were research and development of engineered nanostructures as Aβ amyloid inhibitors have attracted extensive attention and become a new frontier in nanomedicine. The effects of nanostructural surface properties (e.g., morphology, charge, hydrophobicity) on inhibition of Aβ aggregation are modulated by adsorbed Aβ peptides. Nevertheless, chirality has been seldom considered in recognition of Aβ species and modulation of Aβ aggregations. Moreover, a more relevant question for chiral inhibitors is little known about the molecular mechanism of how to interface chiral effects Aβ targeting recognition and effective mitigation of amyloidosis at the molecular level. Herein, we review recent experimental and theoretical results acquired in the specific areas of artificial chiral nanostructure inhibitors. This article will be essential to provide a microlevel insight into the effects of chiral nanointerfaces on amyloidosis processes as well as the development of chiral inhibitor drugs against Aβ fibrillation.
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Affiliation(s)
- Zhe Zhou
- Department of Neurology, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - You-Quan Gu
- Department of Neurology, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Hang-Xing Wang
- College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
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10
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Foley AR, Raskatov JA. Understanding and controlling amyloid aggregation with chirality. Curr Opin Chem Biol 2021; 64:1-9. [PMID: 33610939 PMCID: PMC8368077 DOI: 10.1016/j.cbpa.2021.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 01/11/2021] [Accepted: 01/16/2021] [Indexed: 12/22/2022]
Abstract
Amyloid aggregation and human disease are inextricably linked. Examples include Alzheimer disease, Parkinson disease, and type II diabetes. While seminal advances on the mechanistic understanding of these diseases have been made over the last decades, controlling amyloid fibril formation still represents a challenge, and it is a subject of active research. In this regard, chiral modifications have increasingly been proved to offer a particularly well-suited approach toward accessing to previously unknown aggregation pathways and to provide with novel insights on the biological mechanisms of action of amyloidogenic peptides and proteins. Here, we summarize recent advances on how the use of mirror-image peptides/proteins and d-amino acid incorporations have helped modulate amyloid aggregation, offered new mechanistic tools to study cellular interactions, and allowed us to identify key positions within the peptide/protein sequence that influence amyloid fibril growth and toxicity.
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Affiliation(s)
- Alejandro R Foley
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, CA, 95064, USA
| | - Jevgenij A Raskatov
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, CA, 95064, USA.
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11
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Kageyama Y, Irie Y, Matsushima Y, Segawa T, Bellier JP, Hidaka K, Sugiyama H, Kaneda D, Hashizume Y, Akatsu H, Miki K, Kita A, Walker DG, Irie K, Tooyama I. Characterization of a Conformation-Restricted Amyloid β Peptide and Immunoreactivity of Its Antibody in Human AD brain. ACS Chem Neurosci 2021; 12:3418-3432. [PMID: 34464082 DOI: 10.1021/acschemneuro.1c00416] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Characterization of amyloid β (Aβ) oligomers, the transition species present prior to the formation of Aβ fibrils and that have cytotoxicity, has become one of the major topics in the investigations of Alzheimer's disease (AD) pathogenesis. However, studying pathophysiological properties of Aβ oligomers is challenging due to the instability of these protein complexes in vitro. Here, we report that conformation-restricted Aβ42 with an intramolecular disulfide bond at positions 17 and 28 (SS-Aβ42) formed stable Aβ oligomers in vitro. Thioflavin T binding assays, nondenaturing gel electrophoresis, and morphological analyses revealed that SS-Aβ42 maintained oligomeric structure, whereas wild-type Aβ42 and the highly aggregative Aβ42 mutant with E22P substitution (E22P-Aβ42) formed Aβ fibrils. In agreement with these observations, SS-Aβ42 was more cytotoxic compared to the wild-type and E22P-Aβ42 in cell cultures. Furthermore, we developed a monoclonal antibody, designated TxCo-1, using the toxic conformation of SS-Aβ42 as immunogen. X-ray crystallography of the TxCo-1/SS-Aβ42 complex, enzyme immunoassay, and immunohistochemical studies confirmed the recognition site and specificity of TxCo-1 to SS-Aβ42. Immunohistochemistry with TxCo-1 antibody identified structures resembling senile plaques and vascular Aβ in brain samples of AD subjects. However, TxCo-1 immunoreactivity did not colocalize extensively with Aβ plaques identified with conventional Aβ antibodies. Together, these findings indicate that Aβ with a turn at positions 22 and 23, which is prone to form Aβ oligomers, could show strong cytotoxicity and accumulated in brains of AD subjects. The SS-Aβ42 and TxCo-1 antibody should facilitate understanding of the pathological role of Aβ with toxic conformation in AD.
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Affiliation(s)
- Yusuke Kageyama
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Yumi Irie
- Division of Food Science & Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Yuka Matsushima
- Division of Food Science & Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Tatsuya Segawa
- Immuno-Biological Laboratories Co., Ltd., Fujioka-Shi, Gunma 375-0005, Japan
| | - Jean-Pierre Bellier
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Kumi Hidaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hiroshi Sugiyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Daita Kaneda
- Choju Medical Institute, Fukushimura Hospital, 19-14 Noyoricho, Yamanaka, Aichi 441-8124, Japan
| | - Yoshio Hashizume
- Choju Medical Institute, Fukushimura Hospital, 19-14 Noyoricho, Yamanaka, Aichi 441-8124, Japan
| | - Hiroyasu Akatsu
- Choju Medical Institute, Fukushimura Hospital, 19-14 Noyoricho, Yamanaka, Aichi 441-8124, Japan
- Department of Community-Based Medical Education, Nagoya City University Graduate School of Medicine, Nagoya, Aichi 467-8601, Japan
| | - Kunio Miki
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Akiko Kita
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Sennan, Osaka 590-0494, Japan
| | - Douglas G. Walker
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Kazuhiro Irie
- Division of Food Science & Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Ikuo Tooyama
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
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12
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Chen Z, Chi Z, Sun Y, Lv Z. Chirality in peptide-based materials: From chirality effects to potential applications. Chirality 2021; 33:618-642. [PMID: 34342057 DOI: 10.1002/chir.23344] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/24/2021] [Accepted: 07/13/2021] [Indexed: 12/23/2022]
Abstract
Chirality is ubiquitous in nature with primary cellular functions that include construction of right-/left-handed helix and selective communications among diverse biomolecules. Of particularly intriguing are the chiral peptide-based materials that can be deliberately designed to change physicochemistry properties via tuning peptide sequences. Critically, understanding their chiral effects are fundamental for the development of novel materials in chemistry and biomedicine fields. Here, we review recent researches on chirality in peptide-based materials, summarizing relevant typical chiral effects towards recognition, amplification, and induction. Driven forces for the chiral discrimination in affinity interaction as well as the handedness preferences in supramolecular structure formation at both the macroscale and microscale are illustrated. The implementation of such chirality effects of artificial copolymers, assembled aggregates and their composites in the fields of bioseparation and bioenrichment, cell incubation, protein aggregation inhibitors, chiral smart gels, and bionic electro devices are also presented. At last, the challenges in these areas and possible directions are pointed out. The diversity of chiral roles in the origin of life and chirality design in different organic or composite systems as well as their applications in drug development and chirality detection in environmental protection are discussed.
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Affiliation(s)
- Zhonghui Chen
- Guangdong Engineering Technology Research Center for High performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center, Guangzhou), Guangzhou, China
| | - Zhenguo Chi
- Guangdong Engineering Technology Research Center for High performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Yifeng Sun
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center, Guangzhou), Guangzhou, China
| | - Ziyu Lv
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, China
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13
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Raskatov JA, Schneider JP, Nilsson BL. Defining the Landscape of the Pauling-Corey Rippled Sheet: An Orphaned Motif Finding New Homes. Acc Chem Res 2021; 54:2488-2501. [PMID: 33901396 PMCID: PMC8154201 DOI: 10.1021/acs.accounts.1c00084] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
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When peptides are mixed with their mirror images in an equimolar
ratio, two-dimensional periodic structural folds can form, in which
extended peptide strands are arrayed with alternating chirality. The
resultant topography class, termed the rippled β-sheet, was
introduced as a theoretical concept by Pauling and Corey in 1953.
Unlike other fundamental protein structural motifs identified around
that time, including the α-helix and the pleated β-sheet,
it took several decades before conclusive experimental data supporting
the proposed rippled β-sheet motif were gained. Much of the
key experimental evidence was provided over the course of the past
decade through the concurrent efforts of our three laboratories. Studies
that focused on developing new self-assembling hydrogel materials
have shown that certain amphiphilic peptides form fibrils and hydrogel
networks that are more rigid and have a higher thermodynamic stability
when made from racemic peptide mixtures as opposed to pure enantiomers.
Related interrogation of assemblies composed of mixtures of l- and d-amphiphilic peptides confirmed that the resulting
fibrils were composed of alternating l/d peptides
consistent with rippled β-sheets. It was also demonstrated that
mirror-image amyloid beta (Aβ) could act as a molecular chaperone
to promote oligomer-to-fibril conversion of the natural Aβ enantiomer,
which was found to reduce Aβ neurotoxicity against different
neuronal cell models. With a cross-disciplinary approach that combines
experiment and theory, our three laboratories have demonstrated the
unique biophysical, biochemical, and biological properties that arise
upon mixing of peptide enantiomers, in consequence of rippled β-sheet
formation. In this Account, we give an overview of the early history
of the rippled β-sheet and provide a detailed structural description/definition
of this motif relative to the pleated β-sheet. We then summarize
the key findings, obtained on three unique sets of aggregating mirror-image
peptide pairs through independent efforts of our three laboratories,
and use these results to delineate the landscape of the rippled β-sheet
structural motif to inspire future studies. Peptide sequence parameters
that favor rippled β-sheet assembly are described, along with
the accompanying kinetic and thermodynamic properties, as well as
the resulting emergent physical properties of the assemblies. The
Account then concludes with a brief overview of some key unresolved
challenges in this nascent field. There is much potential for future
applications of this unique supramolecular motif in the realm of materials
design and biomedical research. We hope this Account will stimulate
much-needed discussion of this fascinating structural class to eventually
produce a fully quantitative, rational framework for the molecular
engineering of rippled β-sheets in the future.
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Affiliation(s)
- Jevgenij A. Raskatov
- Department of Chemistry and Biochemistry, UCSC, 1156 High Street, Santa Cruz, California 95064, United States
| | - Joel P. Schneider
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, United States
| | - Bradley L. Nilsson
- Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
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14
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Maity D, Howarth M, Vogel MC, Magzoub M, Hamilton AD. Peptidomimetic-Based Vesicles Inhibit Amyloid-β Fibrillation and Attenuate Cytotoxicity. J Am Chem Soc 2021; 143:3086-3093. [PMID: 33600171 DOI: 10.1021/jacs.0c09967] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An interruption in Aβ homeostasis leads to the deposit of neurotoxic amyloid plaques and is associated with Alzheimer's disease. A supramolecular strategy based on the assembly of peptidomimetic agents into functional vesicles has been conceived for the simultaneous inhibition of Aβ42 fibrillation and expedited clearance of Aβ42 aggregates. Tris-pyrrolamide peptidomimetic, ADH-353, contains one hydrophobic N-butyl and two hydrophilic N-propylamine side chains and readily forms vesicles under physiological conditions. These vesicles completely rescue both mouse neuroblastoma N2a and human neuroblastoma SH-SY5Y cells from the cytotoxicity that follows from Aβ42 misfolding likely in mitochondria. Biophysical studies, including confocal imaging, demonstrate the biocompatibility and selectivity of the approach toward this aberrant protein assembly in cellular milieu.
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Affiliation(s)
- Debabrata Maity
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - Madeline Howarth
- Biology Program, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates
| | - Maria C Vogel
- Biology Program, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates
| | - Mazin Magzoub
- Biology Program, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates
| | - Andrew D Hamilton
- Department of Chemistry, New York University, New York, New York 10003, United States
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15
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Matsushima Y, Yanagita RC, Irie K. Control of the toxic conformation of amyloid β42 by intramolecular disulfide bond formation. Chem Commun (Camb) 2020; 56:4118-4121. [PMID: 32163091 DOI: 10.1039/d0cc01053g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a method to fix the conformation of Aβ42 to the toxic or non-toxic form by intramolecular disulfide bonds. We found that an Aβ42 analog crosslinked within the molecule at the 17th and 28th amino acid residues exhibited high aggregative ability and potent neurotoxicity comparable to those of E22P-Aβ42. This analog would be useful in the research of Aβ42 oligomers and to develop reliable antibodies for early diagnosis of Alzheimer's disease.
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Affiliation(s)
- Yuka Matsushima
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan.
| | - Ryo C Yanagita
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Kagawa 761-0795, Japan
| | - Kazuhiro Irie
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan.
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16
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Meng F, Lu T, Wang Y, Zhao Y, Li Z, Li F. Role of Chain Extension in the Ability of Peptide Oligomers to Damage the Lipid Membrane Studied by the l- to d-Amino Acid Substitutions of hIAPP 18-27. J Phys Chem B 2020; 124:10147-10156. [PMID: 33140962 DOI: 10.1021/acs.jpcb.0c07656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Exploration of the relation between the structural feature of oligomers and the ability of oligomers to damage the membrane has been an important subject in the study of the cytotoxic mechanism of amyloid proteins. In this work, we selected the hIAPP18-27 fragment as a model peptide and modified it by an alternating substitution of a d-amino acid for an l-amino acid in the hydrophilic N-terminal region, the hydrophobic C-terminal region, and the entire sequence. We prepared the oligomers using these peptides and investigated the effects of chain extension in different regions of the peptide on the ability of the oligomers to damage the membrane composed of POPC/POPG 4:1. We examined the morphology, structure, surface hydrophobicity, and packing compactness of the oligomers and monitored the changes in the structure and aggregation of the peptides upon interaction with the membrane. We found that the surface hydrophobicity and the disruptive ability of the oligomers are increased by an alternating l- and d-amino acid arrangement in the hydrophobic region of the peptide, while the packing compactness of the oligomers is increased and the disruptive ability of the oligomers decreased by an alternating l- and d-amino acid arrangement only in the hydrophilic region. The extension of the hydrophobic chain plays a significant role in the disruptive ability of the oligomers. Our results suggest that a positive relation between the surface hydrophobicity and the disruptive ability could be established only for the oligomers in which the peptide chains are flexible and loosely packed.
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Affiliation(s)
- Feihong Meng
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Avenue, Changchun, 130012, P. R. China
| | - Tong Lu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Avenue, Changchun, 130012, P. R. China
| | - Yajie Wang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Avenue, Changchun, 130012, P. R. China
| | - Yanping Zhao
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, 2699 Qianjin Avenue, Changchun, 130012, P. R. China
| | - Zhengqiang Li
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, 2699 Qianjin Avenue, Changchun, 130012, P. R. China
| | - Fei Li
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Avenue, Changchun, 130012, P. R. China
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17
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Limbocker R, Mannini B, Ruggeri FS, Cascella R, Xu CK, Perni M, Chia S, Chen SW, Habchi J, Bigi A, Kreiser RP, Wright AK, Albright JA, Kartanas T, Kumita JR, Cremades N, Zasloff M, Cecchi C, Knowles TPJ, Chiti F, Vendruscolo M, Dobson CM. Trodusquemine displaces protein misfolded oligomers from cell membranes and abrogates their cytotoxicity through a generic mechanism. Commun Biol 2020; 3:435. [PMID: 32792544 PMCID: PMC7426408 DOI: 10.1038/s42003-020-01140-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 07/07/2020] [Indexed: 12/21/2022] Open
Abstract
The onset and progression of numerous protein misfolding diseases are associated with the presence of oligomers formed during the aberrant aggregation of several different proteins, including amyloid-β (Aβ) in Alzheimer’s disease and α-synuclein (αS) in Parkinson’s disease. These small, soluble aggregates are currently major targets for drug discovery. In this study, we show that trodusquemine, a naturally-occurring aminosterol, markedly reduces the cytotoxicity of αS, Aβ and HypF-N oligomers to human neuroblastoma cells by displacing the oligomers from cell membranes in the absence of any substantial morphological and structural changes to the oligomers. These results indicate that the reduced toxicity results from a mechanism that is common to oligomers from different proteins, shed light on the origin of the toxicity of the most deleterious species associated with protein aggregation and suggest that aminosterols have the therapeutically-relevant potential to protect cells from the oligomer-induced cytotoxicity associated with numerous protein misfolding diseases. Limbocker et al. show that trodusquemine, an aminosterol, reduces the cytotoxicity of protein misfolded oligomers by displacing them from cell membranes in the absence of any overt structural/ morphological changes in them. This mechanism appears to be general, as they test it for oligomers of αS, Aβ and the model protein HypF-N to human neuroblastoma cells.
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Affiliation(s)
- Ryan Limbocker
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK.,Department of Chemistry and Life Science, United States Military Academy, West Point, NY, 10996, USA
| | - Benedetta Mannini
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Francesco S Ruggeri
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Roberta Cascella
- Department of Experimental and Clinical Biomedical Science, University of Florence, 50134, Florence, Italy
| | - Catherine K Xu
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Michele Perni
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Sean Chia
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Serene W Chen
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Johnny Habchi
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Alessandra Bigi
- Department of Experimental and Clinical Biomedical Science, University of Florence, 50134, Florence, Italy
| | - Ryan P Kreiser
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY, 10996, USA
| | - Aidan K Wright
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY, 10996, USA
| | - J Alex Albright
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY, 10996, USA
| | - Tadas Kartanas
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Janet R Kumita
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Nunilo Cremades
- Institute for Biocomputation and Physics of Complex Systems (BIFI)-Joint Unit BIFI-IQFR (CSIC), University of Zaragoza, 50018, Zaragoza, Spain
| | - Michael Zasloff
- MedStar-Georgetown Transplant Institute, Georgetown University School of Medicine, Washington, DC, 20010, USA
| | - Cristina Cecchi
- Department of Experimental and Clinical Biomedical Science, University of Florence, 50134, Florence, Italy
| | - Tuomas P J Knowles
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK.,Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Fabrizio Chiti
- Department of Experimental and Clinical Biomedical Science, University of Florence, 50134, Florence, Italy.
| | - Michele Vendruscolo
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK.
| | - Christopher M Dobson
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
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18
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Cerofolini L, Ravera E, Bologna S, Wiglenda T, Böddrich A, Purfürst B, Benilova I, Korsak M, Gallo G, Rizzo D, Gonnelli L, Fragai M, De Strooper B, Wanker EE, Luchinat C. Mixing Aβ(1–40) and Aβ(1–42) peptides generates unique amyloid fibrils. Chem Commun (Camb) 2020; 56:8830-8833. [DOI: 10.1039/d0cc02463e] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Solid-state NMR experiments reveal that the two isoforms of the beta-amyloid peptide (Aβ(1–40) and Aβ(1–42)) are able to form unique interlaced mixed fibrils.
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