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Palmioli A, Mazzoni V, De Luigi A, Bruzzone C, Sala G, Colombo L, Bazzini C, Zoia CP, Inserra M, Salmona M, De Noni I, Ferrarese C, Diomede L, Airoldi C. Alzheimer's Disease Prevention through Natural Compounds: Cell-Free , In Vitro, and In Vivo Dissection of Hop ( Humulus lupulus L.) Multitarget Activity. ACS Chem Neurosci 2022; 13:3152-3167. [PMID: 36283035 PMCID: PMC9673154 DOI: 10.1021/acschemneuro.2c00444] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The relevant social and economic costs associated with aging and neurodegenerative diseases, particularly Alzheimer's disease (AD), entail considerable efforts to develop effective preventive and therapeutic strategies. The search for natural compounds, whose intake through diet can help prevent the main biochemical mechanisms responsible for AD onset, led us to screen hops, one of the main ingredients of beer. To explore the chemical variability of hops, we characterized four hop varieties, i.e., Cascade, Saaz, Tettnang, and Summit. We investigated the potential multitarget hop activity, in particular its ability to hinder Aβ1-42 peptide aggregation and cytotoxicity, its antioxidant properties, and its ability to enhance autophagy, promoting the clearance of misfolded and aggregated proteins in a human neuroblastoma SH-SY5Y cell line. Moreover, we provided evidence of in vivo hop efficacy using the transgenic CL2006Caenorhabditis elegans strain expressing the Aβ3-42 peptide. By combining cell-free and in vitro assays with nuclear magnetic resonance (NMR) and MS-based metabolomics, NMR molecular recognition studies, and atomic force microscopy, we identified feruloyl and p-coumaroylquinic acids flavan-3-ol glycosides and procyanidins as the main anti-Aβ components of hop.
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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,NeuroMI,
Milan Center for Neuroscience, University
of Milano-Bicocca, 20126 Milano, Italy,
| | - Valeria Mazzoni
- Department
of Biotechnology and Biosciences, University
of Milano-Bicocca, P.zza della Scienza 2, 20126 Milan, Italy
| | - Ada De Luigi
- Department
of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milano, Italy
| | - Chiara Bruzzone
- Department
of Biotechnology and Biosciences, University
of Milano-Bicocca, P.zza della Scienza 2, 20126 Milan, Italy
| | - Gessica Sala
- NeuroMI,
Milan Center for Neuroscience, University
of Milano-Bicocca, 20126 Milano, Italy,School
of Medicine and Surgery, University of Milano-Bicocca, Via Cadore 48, 20900 Monza, Italy
| | - Laura Colombo
- Department
of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milano, Italy
| | - Chiara Bazzini
- NeuroMI,
Milan Center for Neuroscience, University
of Milano-Bicocca, 20126 Milano, Italy,School
of Medicine and Surgery, University of Milano-Bicocca, Via Cadore 48, 20900 Monza, Italy
| | - Chiara Paola Zoia
- NeuroMI,
Milan Center for Neuroscience, University
of Milano-Bicocca, 20126 Milano, Italy,School
of Medicine and Surgery, University of Milano-Bicocca, Via Cadore 48, 20900 Monza, Italy
| | - Mariagiovanna Inserra
- Department
of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milano, Italy
| | - Mario Salmona
- NeuroMI,
Milan Center for Neuroscience, University
of Milano-Bicocca, 20126 Milano, Italy
| | - Ivano De Noni
- Department
of Food, Environmental and Nutritional Sciences, University of Milano, Via Celoria 2, 20133 Milano, Italy
| | - Carlo Ferrarese
- NeuroMI,
Milan Center for Neuroscience, University
of Milano-Bicocca, 20126 Milano, Italy,School
of Medicine and Surgery, University of Milano-Bicocca, Via Cadore 48, 20900 Monza, Italy,Department
of Neuroscience, San Gerardo Hospital, ASST-Monza, Via Pergolesi 33, 20900 Monza, MB, Italy
| | - Luisa Diomede
- Department
of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milano, Italy
| | - Cristina Airoldi
- Department
of Biotechnology and Biosciences, University
of Milano-Bicocca, P.zza della Scienza 2, 20126 Milan, Italy,NeuroMI,
Milan Center for Neuroscience, University
of Milano-Bicocca, 20126 Milano, Italy,
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Ciaramelli C, Palmioli A, Angotti I, Colombo L, De Luigi A, Sala G, Salmona M, Airoldi C. NMR-Driven Identification of Cinnamon Bud and Bark Components With Anti-Aβ Activity. Front Chem 2022; 10:896253. [PMID: 35755250 PMCID: PMC9214034 DOI: 10.3389/fchem.2022.896253] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/26/2022] [Indexed: 11/15/2022] Open
Abstract
The anti-Alzheimer disease (AD) activity reported for an aqueous cinnamon bark extract prompted us to investigate and compare the anti-amyloidogenic properties of cinnamon extracts obtained from both bark and bud, the latter being a very little explored matrix. We prepared the extracts with different procedures (alcoholic, hydroalcoholic, or aqueous extractions). An efficient protocol for the rapid analysis of NMR spectra of cinnamon bud and bark extracts was set up, enabling the automatic identification and quantification of metabolites. Moreover, we exploited preparative reverse-phase (RP) chromatography to prepare fractions enriched in polyphenols, further characterized by UPLC-HR-MS. Then, we combined NMR-based molecular recognition studies, atomic force microscopy, and in vitro biochemical and cellular assays to investigate the anti-amyloidogenic activity of our extracts. Both bud and bark extracts showed a potent anti-amyloidogenic activity. Flavanols, particularly procyanidins, and cinnamaldehydes, are the chemical components of cinnamon hindering Aβ peptide on-pathway aggregation and toxicity in a human neuroblastoma SH-SY5Y cell line. Together with the previously reported ability to hinder tau aggregation and filament formation, these data indicate cinnamon polyphenols as natural products possessing multitarget anti-AD activity. Since cinnamon is a spice increasingly present in the human diet, our results support its use to prepare nutraceuticals useful in preventing AD through an active contrast to the biochemical processes that underlie the onset of this disease. Moreover, the structures of cinnamon components responsible for cinnamon anti-AD activities represent molecular templates for designing and synthesizing new anti-amyloidogenic drugs.
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Affiliation(s)
- Carlotta Ciaramelli
- BioOrgNMR Lab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy.,Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, Milano, Italy
| | - Alessandro Palmioli
- BioOrgNMR Lab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy.,Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, Milano, Italy
| | - Irene Angotti
- BioOrgNMR Lab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Laura Colombo
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche "Mario Negri"- IRCCS, Milano, Italy
| | - Ada De Luigi
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche "Mario Negri"- IRCCS, Milano, Italy
| | - Gessica Sala
- Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, Milano, Italy.,School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Mario Salmona
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche "Mario Negri"- IRCCS, Milano, Italy
| | - Cristina Airoldi
- BioOrgNMR Lab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy.,Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, Milano, Italy
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3
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Ciaramelli C, Palmioli A, De Luigi A, Colombo L, Sala G, Salmona M, Airoldi C. NMR-based Lavado cocoa chemical characterization and comparison with fermented cocoa varieties: Insights on cocoa's anti-amyloidogenic activity. Food Chem 2020; 341:128249. [PMID: 33038804 DOI: 10.1016/j.foodchem.2020.128249] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/12/2020] [Accepted: 09/26/2020] [Indexed: 01/10/2023]
Abstract
The metabolic profile of Lavado cocoa was characterized for the first time by NMR spectroscopy, then compared with the profiles of fermented and processed varieties, Natural and commercial cocoa. The significant difference in the contents of theobromine and flavanols prompted us to examine the cocoa varieties to seek correlations between these metabolite concentrations and the anti-amyloidogenic activity reported for cocoa in the literature. We combined NMR spectroscopy, preparative reversed-phase (RP) chromatography, atomic force microscopy, in vitro biochemical and cell assays, to investigate and compare the anti-amyloidogenic properties of extracts and fractions enriched in different metabolite classes. Lavado variety was the most active and the catechins and theobromine were the chemical components of cocoa hindering Aβ peptide on-pathway aggregation and toxicity in a human neuroblastoma SH-SY5Y cell line.
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Affiliation(s)
- Carlotta Ciaramelli
- BioOrgNMR Lab, Department of Biotechnologies and Biosciences, University of Milano-Bicocca, P.zza della Scienza 2, 20126 Milan, Italy; Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, P.zza dell'Ateneo Nuovo 1, 20126 Milano Italy.
| | - Alessandro Palmioli
- BioOrgNMR Lab, Department of Biotechnologies and Biosciences, University of Milano-Bicocca, P.zza della Scienza 2, 20126 Milan, Italy; Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, P.zza dell'Ateneo Nuovo 1, 20126 Milano Italy.
| | - Ada De Luigi
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche "Mario Negri" IRCCS, Via Mario Negri 2, 20156 Milano, Italy.
| | - Laura Colombo
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche "Mario Negri" IRCCS, Via Mario Negri 2, 20156 Milano, Italy.
| | - Gessica Sala
- School of Medicine and Surgery, University of Milano-Bicocca, Via Cadore 48, 20900 Monza, Italy; Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, P.zza dell'Ateneo Nuovo 1, 20126 Milano Italy.
| | - Mario Salmona
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche "Mario Negri" IRCCS, Via Mario Negri 2, 20156 Milano, Italy.
| | - Cristina Airoldi
- BioOrgNMR Lab, Department of Biotechnologies and Biosciences, University of Milano-Bicocca, P.zza della Scienza 2, 20126 Milan, Italy; Milan Center for Neuroscience (NeuroMI), University of Milano-Bicocca, P.zza dell'Ateneo Nuovo 1, 20126 Milano Italy.
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4
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Tripathy D, Migazzi A, Costa F, Roncador A, Gatto P, Fusco F, Boeri L, Albani D, Juárez-Hernández JL, Musio C, Colombo L, Salmona M, Wilhelmus MMM, Drukarch B, Pennuto M, Basso M. Increased transcription of transglutaminase 1 mediates neuronal death in in vitro models of neuronal stress and Aβ1-42-mediated toxicity. Neurobiol Dis 2020; 140:104849. [PMID: 32222473 DOI: 10.1016/j.nbd.2020.104849] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/01/2020] [Accepted: 03/24/2020] [Indexed: 12/18/2022] Open
Abstract
Alzheimer's disease (AD) is the most common cause of dementia. At the pre-symptomatic phase of the disease, the processing of the amyloid precursor protein (APP) produces toxic peptides, called amyloid-β 1-42 (Aβ 1-42). The downstream effects of Aβ 1-42 production are not completely uncovered. Here, we report the involvement of transglutaminase 1 (TG1) in in vitro AD models of neuronal toxicity. TG1 was increased at late stages of the disease in the hippocampus of a mouse model of AD and in primary cortical neurons undergoing stress. Silencing of TGM1 gene was sufficient to prevent Aβ-mediated neuronal death. Conversely, its overexpression enhanced cell death. TGM1 upregulation was mediated at the transcriptional level by an activator protein 1 (AP1) binding site that when mutated halted TGM1 promoter activation. These results indicate that TG1 acts downstream of Aβ-toxicity, and that its stress-dependent increase makes it suitable for pharmacological intervention.
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Affiliation(s)
- Debasmita Tripathy
- Department of Cellular, Computational and Integrative Biology - CIBIO, University of Trento, Trento, TN, Italy
| | - Alice Migazzi
- Department of Cellular, Computational and Integrative Biology - CIBIO, University of Trento, Trento, TN, Italy
| | - Federica Costa
- Department of Cellular, Computational and Integrative Biology - CIBIO, University of Trento, Trento, TN, Italy
| | - Alessandro Roncador
- Department of Cellular, Computational and Integrative Biology - CIBIO, University of Trento, Trento, TN, Italy
| | - Pamela Gatto
- Department of Cellular, Computational and Integrative Biology - CIBIO, University of Trento, Trento, TN, Italy
| | - Federica Fusco
- Department of Neuroscience, Laboratory of Genetics of Neurodegenerative Disorders, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
| | - Lucia Boeri
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Milan, Italy
| | - Diego Albani
- Department of Neuroscience, Laboratory of Genetics of Neurodegenerative Disorders, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
| | - J Leon Juárez-Hernández
- Institute of Biophysics, Trento Unit, National Research Council (IBF-CNR), Bruno Kessler Foundation (FBK), LabSSAH, Via alla Cascata 56/C, 38123 Trento, Italy
| | - Carlo Musio
- Institute of Biophysics, Trento Unit, National Research Council (IBF-CNR), Bruno Kessler Foundation (FBK), LabSSAH, Via alla Cascata 56/C, 38123 Trento, Italy
| | - Laura Colombo
- Department of Molecular Biochemistry and Pharmacology, Laboratory of Biochemistry and Protein Chemistry, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
| | - Mario Salmona
- Department of Molecular Biochemistry and Pharmacology, Laboratory of Biochemistry and Protein Chemistry, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
| | - M M Micha Wilhelmus
- VU University Medical Center, Neuroscience Campus Amsterdam, Department of Anatomy and Neurosciences, Amsterdam, the Netherlands
| | - Benjamin Drukarch
- VU University Medical Center, Neuroscience Campus Amsterdam, Department of Anatomy and Neurosciences, Amsterdam, the Netherlands
| | - Maria Pennuto
- Dulbecco Telethon Institute Lab of Neurodegenerative Diseases, Centre for Integrative Biology (CIBIO), University of Trento, Italy; Department of Biomedical sciences, via Ugo Bassi 58/B, University of Padova, 35131 Padova, Italy; Padova Neuroscience Center, 35100 Padova, Italy
| | - Manuela Basso
- Department of Cellular, Computational and Integrative Biology - CIBIO, University of Trento, Trento, TN, Italy.
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bioNMR-based identification of natural anti-Aβ compounds in Peucedanum ostruthium. Bioorg Chem 2019; 83:76-86. [DOI: 10.1016/j.bioorg.2018.10.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/07/2018] [Accepted: 10/09/2018] [Indexed: 01/20/2023]
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6
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McClure R, Redha R, Vinson P, Pham W. A Robust and Scalable High-Throughput Compatible Assay for Screening Amyloid-β-Binding Compounds. J Alzheimers Dis 2019; 70:187-197. [PMID: 31177230 PMCID: PMC6943818 DOI: 10.3233/jad-190316] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A robust fluorescent readout assay using topologically-sensitive dyes improves the screening of novel amyloid-binding molecules. One of the key components that make this assay more realistic is the use of endogenous amyloid obtained from 5XFAD mouse brains. The assay conditions were optimized for high throughput screening operation with Z-prime values >0.6. Using a combination of library of 3,500 compounds including known drugs, natural-derived molecules and random organic molecules, 8 unique molecules were identified as potential amyloid-binding agents.
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Affiliation(s)
- Richard McClure
- Vanderbilt University Institute of Imaging Science, Vanderbilt University, Nashville, TN, USA
| | - Rey Redha
- Vanderbilt High-Throughput Screening Facility, Nashville, TN, USA
| | - Paige Vinson
- Vanderbilt High-Throughput Screening Facility, Nashville, TN, USA
- Department of Biochemistry, Vanderbilt University, Nashville, TN, USA
| | - Wellington Pham
- Vanderbilt University Institute of Imaging Science, Vanderbilt University, Nashville, TN, USA
- Department of Radiology and Radiological Sciences, Vanderbilt University, Nashville, TN, USA
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, USA
- Vanderbilt Ingram Cancer Center, Nashville, TN, USA
- Vanderbilt Institute of Chemical Biology, Nashville, TN, USA
- Vanderbilt Institute of Nanoscale Science and Engineering, Nashville, TN, USA
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7
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Ciaramelli C, Palmioli A, De Luigi A, Colombo L, Sala G, Riva C, Zoia CP, Salmona M, Airoldi C. NMR-driven identification of anti-amyloidogenic compounds in green and roasted coffee extracts. Food Chem 2018; 252:171-180. [DOI: 10.1016/j.foodchem.2018.01.075] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 01/03/2018] [Accepted: 01/09/2018] [Indexed: 01/07/2023]
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8
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High performance plasma amyloid-β biomarkers for Alzheimer's disease. Nature 2018; 554:249-254. [PMID: 29420472 DOI: 10.1038/nature25456] [Citation(s) in RCA: 1017] [Impact Index Per Article: 169.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 12/11/2017] [Indexed: 01/02/2023]
Abstract
To facilitate clinical trials of disease-modifying therapies for Alzheimer's disease, which are expected to be most efficacious at the earliest and mildest stages of the disease, supportive biomarker information is necessary. The only validated methods for identifying amyloid-β deposition in the brain-the earliest pathological signature of Alzheimer's disease-are amyloid-β positron-emission tomography (PET) imaging or measurement of amyloid-β in cerebrospinal fluid. Therefore, a minimally invasive, cost-effective blood-based biomarker is desirable. Despite much effort, to our knowledge, no study has validated the clinical utility of blood-based amyloid-β markers. Here we demonstrate the measurement of high-performance plasma amyloid-β biomarkers by immunoprecipitation coupled with mass spectrometry. The ability of amyloid-β precursor protein (APP)669-711/amyloid-β (Aβ)1-42 and Aβ1-40/Aβ1-42 ratios, and their composites, to predict individual brain amyloid-β-positive or -negative status was determined by amyloid-β-PET imaging and tested using two independent data sets: a discovery data set (Japan, n = 121) and a validation data set (Australia, n = 252 including 111 individuals diagnosed using 11C-labelled Pittsburgh compound-B (PIB)-PET and 141 using other ligands). Both data sets included cognitively normal individuals, individuals with mild cognitive impairment and individuals with Alzheimer's disease. All test biomarkers showed high performance when predicting brain amyloid-β burden. In particular, the composite biomarker showed very high areas under the receiver operating characteristic curves (AUCs) in both data sets (discovery, 96.7%, n = 121 and validation, 94.1%, n = 111) with an accuracy approximately equal to 90% when using PIB-PET as a standard of truth. Furthermore, test biomarkers were correlated with amyloid-β-PET burden and levels of Aβ1-42 in cerebrospinal fluid. These results demonstrate the potential clinical utility of plasma biomarkers in predicting brain amyloid-β burden at an individual level. These plasma biomarkers also have cost-benefit and scalability advantages over current techniques, potentially enabling broader clinical access and efficient population screening.
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The A2V mutation as a new tool for hindering Aβ aggregation: A neutron and x-ray diffraction study. Sci Rep 2017; 7:5510. [PMID: 28710429 PMCID: PMC5511251 DOI: 10.1038/s41598-017-05582-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 05/31/2017] [Indexed: 01/25/2023] Open
Abstract
We have described a novel C-to-T mutation in the APP gene that corresponds to an alanine to valine substitution at position 673 in APP (A673V), or position 2 of the amyloid-β (Aβ) sequence. This mutation is associated with the early onset of AD-type dementia in homozygous individuals, whereas it has a protective effect in the heterozygous state. Correspondingly, we observed differences in the aggregation properties of the wild-type and mutated Aβ peptides and their mixture. We have carried out neutron diffraction (ND) and x-ray diffraction (XRD) experiments on magnetically-oriented fibers of Aβ1-28WT and its variant Aβ1-28A2V. The orientation propensity was higher for Aβ1-28A2V suggesting that it promotes the formation of fibrillar assemblies. The diffraction patterns by Aβ1-28WT and Aβ1-28A2V assemblies differed in shape and position of the equatorial reflections, suggesting that the two peptides adopt distinct lateral packing of the diffracting units. The diffraction patterns from a mixture of the two peptides differed from those of the single components, indicating the presence of structural interference during assembly and orientation. The lowest orientation propensity was observed for a mixture of Aβ1-28WT and a short N-terminal fragment, Aβ1-6A2V, which supports a role of Aβ’s N-terminal domain in amyloid fibril formation.
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Papadia K, Markoutsa E, Mourtas S, Giannou AD, La Ferla B, Nicotra F, Salmona M, Klepetsanis P, Stathopoulos GT, Antimisiaris SG. Multifunctional LUV liposomes decorated for BBB and amyloid targeting. A. In vitro proof-of-concept. Eur J Pharm Sci 2017; 101:140-148. [PMID: 28193538 DOI: 10.1016/j.ejps.2017.02.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 01/27/2017] [Accepted: 02/09/2017] [Indexed: 12/24/2022]
Abstract
Multifunctional LUV liposomes (mf-LIPs) were developed, having a curcumin-lipid ligand (TREG) with affinity towards amyloid species, together with ligands to target the transferrin and the LDL receptors of the blood-brain-barrier (BBB), on their surface. mf-LIPs were evaluated for their brain targeting, on hCMEC/D3 monolayers, and for their ability to inhibit Aβ-peptide aggregation. The transport of mf-LIP across hCMEC/D3 monolayers was similar to that of BBB-LIPs, indicating that the presence of TREG on their surface does not reduce their brain targeting potential. Likewise, mf-LIP inhibitory effect on Aβ aggregation was similar to that of LIPs functionalized only with TREG, proving that the presence of brain targeting ligands does not reduce the functionality of the amyloid-specific ligand. Addition of the curcumin-lipid in some liposome types was found to enhance their integrity and reduce the effect of serum proteins on their interaction with brain endothelial cells. Finally, preliminary in vivo results confirm the in vitro findings. Concluding, the current results reveal the potential of the specific curcumin-lipid derivative as a component of multifunctional LIPs with efficient brain targeting capability, intended to act as a theragnostic system for AD.
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Affiliation(s)
- Konstantina Papadia
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, University of Patras, Rio 26510, Greece
| | - Eleni Markoutsa
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, University of Patras, Rio 26510, Greece
| | - Spyridon Mourtas
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, University of Patras, Rio 26510, Greece
| | - Anastassios D Giannou
- Laboratory for Molecular Respiratory Carcinogenesis, Department of Physiology, Faculty of Medicine, University of Patras, Rio 26504, Greece
| | - Barabara La Ferla
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza dellaScienza 2, 20126 Milan, Italy
| | - Fransesco Nicotra
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza dellaScienza 2, 20126 Milan, Italy
| | - Mario Salmona
- Department of Biochemistry and Molecular Pharmacology, Istituto di RicercheFarmacologiche "Mario Negri", Milan, Italy
| | - Pavlos Klepetsanis
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, University of Patras, Rio 26510, Greece; Institute of Chemical Engineering Sciences, FORTH/ICE-HT, Rio 26504, Greece
| | - Georgios T Stathopoulos
- Laboratory for Molecular Respiratory Carcinogenesis, Department of Physiology, Faculty of Medicine, University of Patras, Rio 26504, Greece; Comprehensive Pneumology Center (CPC), Institute for Lung Biology and Disease (iLBD), University Hospital, Ludwig-Maximilians University, Helmholtz Zentrum München (DZL), Munich, Bavaria 81377, Germany
| | - Sophia G Antimisiaris
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, University of Patras, Rio 26510, Greece; Institute of Chemical Engineering Sciences, FORTH/ICE-HT, Rio 26504, Greece.
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11
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High-affinity Anticalins with aggregation-blocking activity directed against the Alzheimer β-amyloid peptide. Biochem J 2016; 473:1563-78. [PMID: 27029347 PMCID: PMC4888463 DOI: 10.1042/bcj20160114] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 03/30/2016] [Indexed: 01/25/2023]
Abstract
Anticalins engineered for high affinity and specificity towards the central VFFAED epitope in Aβ peptides potently inhibit their aggregation, thus providing novel reagents to study the molecular pathology of Alzheimer's disease (AD) and alternative drug candidates compared with current biopharmaceutical treatments. Amyloid beta (Aβ) peptides, in particular Aβ42 and Aβ40, exert neurotoxic effects and their overproduction leads to amyloid deposits in the brain, thus constituting an important biomolecular target for treatments of Alzheimer's disease (AD). We describe the engineering of cognate Anticalins as a novel type of neutralizing protein reagent based on the human lipocalin scaffold. Phage display selection from a genetic random library comprising variants of the human lipocalin 2 (Lcn2) with mutations targeted at 20 exposed amino acid positions in the four loops that form the natural binding site was performed using both recombinant and synthetic target peptides and resulted in three different Anticalins. Biochemical characterization of the purified proteins produced by periplasmic secretion in Escherichia coli revealed high folding stability in a monomeric state, with Tm values ranging from 53.4°C to 74.5°C, as well as high affinities for Aβ40, between 95 pM and 563 pM, as measured by real-time surface plasmon resonance analysis. The central linear VFFAED epitope within the Aβ sequence was mapped using a synthetic peptide array on membranes and was shared by all three Anticalins, despite up to 13 mutual amino acid differences in their binding sites. All Anticalins had the ability–with varying extent–to inhibit Aβ aggregation in vitro according to the thioflavin-T fluorescence assay and, furthermore, they abolished Aβ42-mediated toxicity in neuronal cell culture. Thus, these Anticalins provide not only useful protein reagents to study the molecular pathology of AD but they also show potential as alternative drug candidates compared with antibodies.
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12
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Synthesis and Preliminary Biological Evaluation of Fluorescent Glycofused Tricyclic Derivatives of Amyloid β-Peptide Ligands. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501593] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Amyloid-β peptides in interaction with raft-mime model membranes: a neutron reflectivity insight. Sci Rep 2016; 6:20997. [PMID: 26880066 PMCID: PMC4754687 DOI: 10.1038/srep20997] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 01/14/2016] [Indexed: 12/11/2022] Open
Abstract
The role of first-stage β–amyloid aggregation in the development of the Alzheimer disease, is widely accepted but still unclear. Intimate interaction with the cell membrane is invoked. We designed Neutron Reflectometry experiments to reveal the existence and extent of the interaction between β–amyloid (Aβ) peptides and a lone customized biomimetic membrane, and their dependence on the aggregation state of the peptide. The membrane, asymmetrically containing phospholipids, GM1 and cholesterol in biosimilar proportion, is a model for a raft, a putative site for amyloid-cell membrane interaction. We found that the structured-oligomer of Aβ(1-42), its most acknowledged membrane-active state, is embedded as such into the external leaflet of the membrane. Conversely, the Aβ(1-42) unstructured early-oligomers deeply penetrate the membrane, likely mimicking the interaction at neuronal cell surfaces, when the Aβ(1-42) is cleaved from APP protein and the membrane constitutes a template for its further structural evolution. Moreover, the smaller Aβ(1-6) fragment, the N-terminal portion of Aβ, was also used. Aβ N-terminal is usually considered as involved in oligomer stabilization but not in the peptide-membrane interaction. Instead, it was seen to remove lipids from the bilayer, thus suggesting its role, once in the whole peptide, in membrane leakage, favouring peptide recruitment.
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14
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Colombo L, Zoia L, Violatto MB, Previdi S, Talamini L, Sitia L, Nicotra F, Orlandi M, Salmona M, Recordati C, Bigini P, La Ferla B. Organ Distribution and Bone Tropism of Cellulose Nanocrystals in Living Mice. Biomacromolecules 2015. [DOI: 10.1021/acs.biomac.5b00805] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Laura Colombo
- IRCCS-Istituto
di Ricerche Farmacologiche “Mario Negri”, 20156 Milan, Italy
| | - Luca Zoia
- Department
of Earth and Environmental Science, University of Milano-Bicocca, Piazza
della Scienza 1, 20126 Milan, Italy
| | | | - Sara Previdi
- IRCCS-Istituto
di Ricerche Farmacologiche “Mario Negri”, 20156 Milan, Italy
| | - Laura Talamini
- IRCCS-Istituto
di Ricerche Farmacologiche “Mario Negri”, 20156 Milan, Italy
| | - Leopoldo Sitia
- IRCCS-Istituto
di Ricerche Farmacologiche “Mario Negri”, 20156 Milan, Italy
| | - Francesco Nicotra
- Department
of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza
della Scienza 2, 20126 Milano, Italy
| | - Marco Orlandi
- Department
of Earth and Environmental Science, University of Milano-Bicocca, Piazza
della Scienza 1, 20126 Milan, Italy
| | - Mario Salmona
- IRCCS-Istituto
di Ricerche Farmacologiche “Mario Negri”, 20156 Milan, Italy
| | - Camilla Recordati
- Mouse
and Animal Pathology Laboratory, Fondazione Filarete, Viale Ortles
22/4, 20139 Milano, Italy
| | - Paolo Bigini
- IRCCS-Istituto
di Ricerche Farmacologiche “Mario Negri”, 20156 Milan, Italy
| | - Barbara La Ferla
- Department
of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza
della Scienza 2, 20126 Milano, Italy
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15
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C-Terminal Threonine Reduces Aβ43 Amyloidogenicity Compared with Aβ42. J Mol Biol 2015; 428:274-291. [PMID: 26122432 DOI: 10.1016/j.jmb.2015.06.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 04/19/2015] [Accepted: 06/17/2015] [Indexed: 12/21/2022]
Abstract
Aβ43, a product of the proteolysis of the amyloid precursor protein APP, is related to Aβ42 by an additional Thr residue at the C-terminus. Aβ43 is typically generated at low levels compared with the predominant Aβ42 and Aβ40 forms, but it has been suggested that this longer peptide might have an impact on amyloid-β aggregation and Alzheimer's disease that is out of proportion to its brain content. Here, we report that both Aβ42 and Aβ43 spontaneously aggregate into mature amyloid fibrils via sequential appearance of the same series of oligomeric and protofibrillar intermediates, the earliest of which appears to lack β-structure. In spite of the additional β-branched amino acid at the C-terminus, Aβ43 fibrils have fewer strong backbone H-bonds than Aβ42 fibrils, some of which are lost at the C-terminus. In contrast to previous reports, we found that Aβ43 spontaneously aggregates more slowly than Aβ42. In addition, Aβ43 fibrils are very inefficient at seeding Aβ42 amyloid formation, even though Aβ42 fibrils efficiently seed amyloid formation by Aβ43 monomers. Finally, mixtures of Aβ42 and Aβ43 aggregate more slowly than Aβ42 alone. Both in this Aβ42/Aβ43 co-aggregation reaction and in cross-seeding by Aβ42 fibrils, the structure of the Aβ43 in the product fibrils is influenced by the presence of Aβ42. The results provide new details of amyloid structure and assembly pathways, an example of structural plasticity in prion-like replication, and data showing that low levels of Aβ43 in the brain are unlikely to favorably impact the aggregation of Aβ42.
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Airoldi C, Mourtas S, Cardona F, Zona C, Sironi E, D'Orazio G, Markoutsa E, Nicotra F, Antimisiaris SG, La Ferla B. Nanoliposomes presenting on surface a cis-glycofused benzopyran compound display binding affinity and aggregation inhibition ability towards Amyloid β1-42 peptide. Eur J Med Chem 2014; 85:43-50. [DOI: 10.1016/j.ejmech.2014.07.085] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 07/04/2014] [Accepted: 07/23/2014] [Indexed: 11/17/2022]
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17
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Sironi E, Colombo L, Lompo A, Messa M, Bonanomi M, Regonesi ME, Salmona M, Airoldi C. Natural Compounds against Neurodegenerative Diseases: Molecular Characterization of the Interaction of Catechins from Green Tea with Aβ1–42, PrP106–126, and Ataxin‐3 Oligomers. Chemistry 2014; 20:13793-800. [DOI: 10.1002/chem.201403188] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Indexed: 12/31/2022]
Affiliation(s)
- Erika Sironi
- Department of Biotechnology and Biosciences University of Milano‐Bicocca, P.zza della Scienza, 2, 20126, Milano (Italy), Fax: (+39) 02‐6448‐3565
| | - Laura Colombo
- Department Biochemistry and Molecular Pharmacology, IRCCS‐Istituto di Ricerche Farmacologiche “Mario Negri”, Via Giuseppe La Masa, 19 20156 Milano (Italy)
| | - Angela Lompo
- Department of Biotechnology and Biosciences University of Milano‐Bicocca, P.zza della Scienza, 2, 20126, Milano (Italy), Fax: (+39) 02‐6448‐3565
| | - Massimo Messa
- Department Biochemistry and Molecular Pharmacology, IRCCS‐Istituto di Ricerche Farmacologiche “Mario Negri”, Via Giuseppe La Masa, 19 20156 Milano (Italy)
| | - Marcella Bonanomi
- Department of Biotechnology and Biosciences University of Milano‐Bicocca, P.zza della Scienza, 2, 20126, Milano (Italy), Fax: (+39) 02‐6448‐3565
| | - Maria Elena Regonesi
- Department of Statistics and Quantitative Methods, University of Milano‐Bicocca, Via Bicocca degli Arcimboldi, 8, 20126, Milano (Italy)
| | - Mario Salmona
- Department Biochemistry and Molecular Pharmacology, IRCCS‐Istituto di Ricerche Farmacologiche “Mario Negri”, Via Giuseppe La Masa, 19 20156 Milano (Italy)
| | - Cristina Airoldi
- Department of Biotechnology and Biosciences University of Milano‐Bicocca, P.zza della Scienza, 2, 20126, Milano (Italy), Fax: (+39) 02‐6448‐3565
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18
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Messa M, Colombo L, del Favero E, Cantù L, Stoilova T, Cagnotto A, Rossi A, Morbin M, Di Fede G, Tagliavini F, Salmona M. The peculiar role of the A2V mutation in amyloid-β (Aβ) 1-42 molecular assembly. J Biol Chem 2014; 289:24143-52. [PMID: 25037228 DOI: 10.1074/jbc.m114.576256] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We recently reported a novel Aβ precursor protein mutation (A673V), corresponding to position 2 of Aβ1-42 peptides (Aβ1-42A2V), that caused an early onset AD-type dementia in a homozygous individual. The heterozygous relatives were not affected as an indication of autosomal recessive inheritance of this mutation. We investigated the folding kinetics of native unfolded Aβ1-42A2V in comparison with the wild type sequence (Aβ1-42WT) and the equimolar solution of both peptides (Aβ1-42MIX) to characterize the oligomers that are produced in the early phases. We carried out the structural characterization of the three preparations using electron and atomic force microscopy, fluorescence emission, and x-ray diffraction and described the soluble oligomer formation kinetics by laser light scattering. The mutation promoted a peculiar pathway of oligomerization, forming a connected system similar to a polymer network with hydrophobic residues on the external surface. Aβ1-42MIX generated assemblies very similar to those produced by Aβ1-42WT, albeit with slower kinetics due to the difficulties of Aβ1-42WT and Aβ1-42A2V peptides in building up of stable intermolecular interaction.
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Affiliation(s)
- Massimo Messa
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Laura Colombo
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Elena del Favero
- Department of Medical Biotechnology and Translational Medicine, University of Milan, V.le F.lli Cervi 93, 20090 Segrate, Italy, and
| | - Laura Cantù
- Department of Medical Biotechnology and Translational Medicine, University of Milan, V.le F.lli Cervi 93, 20090 Segrate, Italy, and
| | - Tatiana Stoilova
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Alfredo Cagnotto
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Alessandro Rossi
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Michela Morbin
- Neurology V and Neuropathology, IRCCS Foundation "Carlo Besta" Neurological Institute, Via Celoria 11, 20133 Milan, Italy
| | - Giuseppe Di Fede
- Neurology V and Neuropathology, IRCCS Foundation "Carlo Besta" Neurological Institute, Via Celoria 11, 20133 Milan, Italy
| | - Fabrizio Tagliavini
- Neurology V and Neuropathology, IRCCS Foundation "Carlo Besta" Neurological Institute, Via Celoria 11, 20133 Milan, Italy
| | - Mario Salmona
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy,
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19
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Piras S, Furfaro AL, Piccini A, Passalacqua M, Borghi R, Carminati E, Parodi A, Colombo L, Salmona M, Pronzato MA, Marinari UM, Tabaton M, Nitti M. Monomeric Aβ1–42 and RAGE: key players in neuronal differentiation. Neurobiol Aging 2014; 35:1301-8. [DOI: 10.1016/j.neurobiolaging.2014.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 01/04/2014] [Indexed: 11/24/2022]
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20
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Mourtas S, Lazar AN, Markoutsa E, Duyckaerts C, Antimisiaris SG. Multifunctional nanoliposomes with curcumin-lipid derivative and brain targeting functionality with potential applications for Alzheimer disease. Eur J Med Chem 2014; 80:175-83. [PMID: 24780594 DOI: 10.1016/j.ejmech.2014.04.050] [Citation(s) in RCA: 147] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 04/15/2014] [Accepted: 04/15/2014] [Indexed: 10/25/2022]
Abstract
With the objective to formulate multifunctional nanosized liposomes to target amyloid deposits in Alzheimer Disease (AD) brains, a lipid-PEG-curcumin derivative was synthesized and characterized. Multifunctional liposomes incorporating the curcumin derivative and additionally decorated with a Blood Brain Barrier (BBB) transport mediator (anti-Transferin antibody) were prepared and characterized. The fluorescence intensity of curcumin derivative was found to increase notably when the curcumin moiety was in the form of a diisopropylethylamine (DIPEA) salt. Both curcumin-derivative liposomes and curcumin-derivative Anti-TrF liposomes showed a high affinity for the amyloid deposits, on post-mortem brains samples of AD patients. The ability of both liposomes to delay Aβ1-42 peptide aggregation was confirmed by Thioflavin assay. However, the decoration of the curcumin-derivative liposomes with the Anti-TrF improved significantly the intake by the BBB cellular model. Results verify that the attachment of an antibody on the curcumin-liposome surface does not block deposit staining or prevention of Aβ aggregation, while the presence of the curcumin-PEG-lipid conjugate does not reduce their brain-targeting capability substantially, proving the potential of such multifunctional NLs for application in Alzheimer disease treatment and diagnosis.
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Affiliation(s)
- Spyridon Mourtas
- Laboratory of Pharmaceutical Technology, Dept. of Pharmacy, School of Health Sciences, University of Patras, Rio 26510, Greece
| | - Adina N Lazar
- Laboratoire de Neuropathologie Escourolle, Hôpital de la Salpêtrière, AP-HP, 47 Bd de l'hôpital 75013 Paris, France; Centre de recherche de l'ICM, (UPMC, INSERM UMR S 975, CNRS UMR 7225), 47 Bd de l'hôpital, 75013 Paris, France
| | - Eleni Markoutsa
- Laboratory of Pharmaceutical Technology, Dept. of Pharmacy, School of Health Sciences, University of Patras, Rio 26510, Greece
| | - Charles Duyckaerts
- Laboratoire de Neuropathologie Escourolle, Hôpital de la Salpêtrière, AP-HP, 47 Bd de l'hôpital 75013 Paris, France; Centre de recherche de l'ICM, (UPMC, INSERM UMR S 975, CNRS UMR 7225), 47 Bd de l'hôpital, 75013 Paris, France
| | - Sophia G Antimisiaris
- Laboratory of Pharmaceutical Technology, Dept. of Pharmacy, School of Health Sciences, University of Patras, Rio 26510, Greece; Institute of Chemical Engineering Sciences, FORTH/ICES, Rio, 26504 Patras, Greece.
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21
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Simmons C, Ingham V, Williams A, Bate C. Platelet-activating factor antagonists enhance intracellular degradation of amyloid-β42 in neurons via regulation of cholesterol ester hydrolases. Alzheimers Res Ther 2014; 6:15. [PMID: 24625058 PMCID: PMC4055000 DOI: 10.1186/alzrt245] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 02/19/2014] [Indexed: 12/26/2022]
Abstract
INTRODUCTION The progressive dementia that is characteristic of Alzheimer's disease is associated with the accumulation of amyloid-beta (Aβ) peptides in extracellular plaques and within neurons. Aβ peptides are targeted to cholesterol-rich membrane micro-domains called lipid rafts. Observations that many raft proteins undertake recycling pathways that avoid the lysosomes suggest that the accumulation of Aβ in neurons may be related to Aβ targeting lipid rafts. Here we tested the hypothesis that the degradation of Aβ by neurons could be increased by drugs affecting raft formation. METHODS Primary neurons were incubated with soluble Aβ preparations. The amounts of Aβ42 in neurons or specific cellular compartments were measured by enzyme-linked immunosorbent assay. The effects of drugs on the degradation of Aβ42 were studied. RESULTS Aβ42 was targeted to detergent-resistant, low-density membranes (lipid rafts), trafficked via a pathway that avoided the lysosomes, and was slowly degraded by neurons (half-life was greater than 5 days). The metabolism of Aβ42 was sensitive to pharmacological manipulation. In neurons treated with the cholesterol synthesis inhibitor squalestatin, less Aβ42 was found within rafts, greater amounts of Aβ42 were found in lysosomes, and the half-life of Aβ42 was reduced to less than 24 hours. Treatment with phospholipase A2 inhibitors or platelet-activating factor (PAF) antagonists had the same effects on Aβ42 metabolism in neurons as squalestatin. PAF receptors were concentrated in the endoplasmic reticulum (ER) along with enzymes that constitute the cholesterol ester cycle. The addition of PAF to ER membranes triggered activation of cholesterol ester hydrolases and the release of cholesterol from stores of cholesterol esters. An inhibitor of cholesterol ester hydrolases (diethylumbelliferyl phosphate) also increased the degradation of Aβ42 in neurons. CONCLUSIONS We conclude that the targeting of Aβ42 to rafts in normal cells is a factor that affects its degradation. Critically, pharmacological manipulation of neurons can significantly increase Aβ42 degradation. These results are consistent with the hypothesis that the Aβ-induced production of PAF controls a cholesterol-sensitive pathway that affects the cellular localization and hence the fate of Aβ42 in neurons.
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Affiliation(s)
- Charlotte Simmons
- Department of Pathology and Pathogen Biology, Royal Veterinary College, Hawkshead Lane, North Mymms, Herts AL9 7TA, UK
| | - Victoria Ingham
- Department of Pathology and Pathogen Biology, Royal Veterinary College, Hawkshead Lane, North Mymms, Herts AL9 7TA, UK
| | - Alun Williams
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 OES, UK
| | - Clive Bate
- Department of Pathology and Pathogen Biology, Royal Veterinary College, Hawkshead Lane, North Mymms, Herts AL9 7TA, UK
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22
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Mayes J, Tinker-Mill C, Kolosov O, Zhang H, Tabner BJ, Allsop D. β-amyloid fibrils in Alzheimer disease are not inert when bound to copper ions but can degrade hydrogen peroxide and generate reactive oxygen species. J Biol Chem 2014; 289:12052-12062. [PMID: 24619420 DOI: 10.1074/jbc.m113.525212] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
According to the "amyloid cascade" hypothesis of Alzheimer disease, the formation of Aβ fibrils and senile plaques in the brain initiates a cascade of events leading to the formation of neurofibrillary tangles, neurodegeneration, and the symptom of dementia. Recently, however, emphasis has shifted away from amyloid fibrils as the predominant toxic form of Aβ toward smaller aggregates, referred to as "soluble oligomers." These oligomers have become one of the prime suspects for involvement in the early oxidative damage that is evident in this disease. This raises the question whether or not Aβ fibrils are actually "inert tombstones" present at the end of the aggregation process. Here we show that, when Aβ(1-42) aggregates, including fibrils, are bound to Cu(II) ions, they retain their redox activity and are able to degrade hydrogen peroxide (H2O2) with the formation of hydroxyl radicals and the consequent oxidation of the peptide (detected by formation of carbonyl groups). We find that this ability increases as the Cu(II):peptide ratio increases and is accompanied by changes in aggregate morphology, as determined by atomic force microscopy. When aggregates are prepared in the copresence of Cu(II) and Zn(II) ions, the ratio of Cu(II):Zn(II) becomes an important factor in the degeneration of H2O2, the formation of carbonyl groups in the peptide, and in aggregate morphology. We believe, therefore, that Aβ fibrils can destroy H2O2 and generate damaging hydroxyl radicals and, so, are not necessarily inert end points.
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Affiliation(s)
- Jennifer Mayes
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Claire Tinker-Mill
- Department of Physics, Faculty of Science and Technology, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Oleg Kolosov
- Department of Physics, Faculty of Science and Technology, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Hao Zhang
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Brian J Tabner
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - David Allsop
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster LA1 4YQ, United Kingdom.
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23
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Tinker-Mill C, Mayes J, Allsop D, Kolosov OV. Ultrasonic force microscopy for nanomechanical characterization of early and late-stage amyloid-β peptide aggregation. Sci Rep 2014; 4:4004. [PMID: 24500006 PMCID: PMC3915309 DOI: 10.1038/srep04004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 01/20/2014] [Indexed: 11/09/2022] Open
Abstract
The aggregation of amyloid-β peptides into protein fibres is one of the main neuropathological features of Alzheimer's disease (AD). While imaging of amyloid-β aggregate morphology in vitro is extremely important for understanding AD pathology and in the development of aggregation inhibitors, unfortunately, potentially highly toxic, early aggregates are difficult to observe by current electron microscopy and atomic force microscopy (AFM) methods, due to low contrast and variability of peptide attachment to the substrate. Here, we use a poly-L-Lysine (PLL) surface that captures all protein components from monomers to fully formed fibres, followed by nanomechanical mapping via ultrasonic force microscopy (UFM), which marries high spatial resolution and nanomechanical contrast with the non-destructive nature of tapping mode AFM. For the main putative AD pathogenic component, Aβ1-42, the PLL-UFM approach reveals the morphology of oligomers, protofibrils and mature fibres, and finds that a fraction of small oligomers is still present at later stages of fibril assembly.
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Affiliation(s)
| | - Jennifer Mayes
- Division of Biomedical and Life Sciences, Lancaster University, Lancaster, LA1 4YB, UK
| | - David Allsop
- Division of Biomedical and Life Sciences, Lancaster University, Lancaster, LA1 4YB, UK
| | - Oleg V. Kolosov
- Physics Department, Lancaster University, Lancaster, LA1 4YB, UK
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24
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Piccini A, Borghi R, Guglielmotto M, Tamagno E, Cirmena G, Garuti A, Pollero V, Cammarata S, Fornaro M, Messa M, Colombo L, Salmona M, Perry G, Tabaton M. β-Amyloid 1-42 induces physiological transcriptional regulation of BACE1. J Neurochem 2012; 122:1023-31. [DOI: 10.1111/j.1471-4159.2012.07834.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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25
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Anti-Aβ-MAb and dually decorated nanoliposomes: Effect of Aβ1-42 peptides on interaction with hCMEC/D3 cells. Eur J Pharm Biopharm 2012; 81:49-56. [DOI: 10.1016/j.ejpb.2012.02.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 02/09/2012] [Accepted: 02/10/2012] [Indexed: 11/18/2022]
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26
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Taylor M, Moore S, Mourtas S, Niarakis A, Re F, Zona C, Ferla BL, Nicotra F, Masserini M, Antimisiaris SG, Gregori M, Allsop D. Effect of curcumin-associated and lipid ligand-functionalized nanoliposomes on aggregation of the Alzheimer's Aβ peptide. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2011; 7:541-50. [DOI: 10.1016/j.nano.2011.06.015] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 06/13/2011] [Accepted: 06/18/2011] [Indexed: 01/09/2023]
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27
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Manzoni C, Colombo L, Bigini P, Diana V, Cagnotto A, Messa M, Lupi M, Bonetto V, Pignataro M, Airoldi C, Sironi E, Williams A, Salmona M. The molecular assembly of amyloid aβ controls its neurotoxicity and binding to cellular proteins. PLoS One 2011; 6:e24909. [PMID: 21966382 PMCID: PMC3179491 DOI: 10.1371/journal.pone.0024909] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 08/22/2011] [Indexed: 11/29/2022] Open
Abstract
Accumulation of β-sheet-rich peptide (Aβ) is strongly associated with Alzheimer's disease, characterized by reduction in synapse density, structural alterations of dendritic spines, modification of synaptic protein expression, loss of long-term potentiation and neuronal cell death. Aβ species are potent neurotoxins, however the molecular mechanism responsible for Aβ toxicity is still unknown. Numerous mechanisms of toxicity were proposed, although there is no agreement about their relative importance in disease pathogenesis. Here, the toxicity of Aβ 1–40 and Aβ 1–42 monomers, oligomers or fibrils, was evaluated using the N2a cell line. A structure-function relationship between peptide aggregation state and toxic properties was established. Moreover, we demonstrated that Aβ toxic species cross the plasma membrane, accumulate in cells and bind to a variety of internal proteins, especially on the cytoskeleton and in the endoplasmatic reticulum (ER). Based on these data we suggest that numerous proteins act as Aβ receptors in N2a cells, triggering a multi factorial toxicity.
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Affiliation(s)
- Claudia Manzoni
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy
| | - Laura Colombo
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy
| | - Paolo Bigini
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy
| | - Valentina Diana
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy
| | - Alfredo Cagnotto
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy
| | - Massimo Messa
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy
| | - Monica Lupi
- Department of Oncology, Mario Negri Institute for Pharmacological Research, Milan, Italy
| | - Valentina Bonetto
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy
- Dulbecco Telethon Institute, Milan, Italy
| | - Mauro Pignataro
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy
- Dulbecco Telethon Institute, Milan, Italy
| | - Cristina Airoldi
- Department. of Biotechnology and Bioscience, University of Milano-Bicocca, Milan, Italy
| | - Erika Sironi
- Department. of Biotechnology and Bioscience, University of Milano-Bicocca, Milan, Italy
| | - Alun Williams
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Mario Salmona
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy
- * E-mail:
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28
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Bate C, Williams A. Amyloid-β-induced synapse damage is mediated via cross-linkage of cellular prion proteins. J Biol Chem 2011; 286:37955-37963. [PMID: 21900234 DOI: 10.1074/jbc.m111.248724] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The cellular prion protein (PrP(C)), which is highly expressed at synapses, was identified as a receptor for the amyloid-β (Aβ) oligomers that are associated with dementia in Alzheimer disease. Here, we report that Aβ oligomers secreted by 7PA2 cells caused synapse damage in cultured neurons via a PrP(C)-dependent process. Exogenous PrP(C) added to Prnp knock-out((0/0)) neurons was targeted to synapses and significantly increased Aβ-induced synapse damage. In contrast, the synapse damage induced by a phospholipase A(2)-activating peptide was independent of PrP(C). In Prnp wild-type((+/+)) neurons Aβ oligomers activated synaptic cytoplasmic phospholipase A(2) (cPLA(2)). In these cells, the addition of Aβ oligomers triggered the translocation of cPLA(2) in synapses to cholesterol dense membranes (lipid rafts) where it formed a complex also containing Aβ and PrP(C). In contrast, the addition of Aβ to Prnp((0/0)) neurons did not activate synaptic cPLA(2), which remained in the cytoplasm and was not associated with Aβ. Filtration assays and non-denaturing gels demonstrated that Aβ oligomers cross-link PrP(C). We propose that it is the cross-linkage of PrP(C) by Aβ oligomers that triggers abnormal activation of cPLA(2) and synapse damage. This hypothesis was supported by our observation that monoclonal antibody mediated cross-linkage of PrP(C) also activated synaptic cPLA(2) and caused synapse damage.
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Affiliation(s)
- Clive Bate
- Department of Pathology and Infectious Diseases, Royal Veterinary College, Hawkshead Lane, North Mymms, Hertfordshire AL9 7TA, United Kingdom.
| | - Alun Williams
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, United Kingdom
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Bereczki E, Re F, Masserini ME, Winblad B, Pei JJ. Liposomes functionalized with acidic lipids rescue Aβ-induced toxicity in murine neuroblastoma cells. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2011; 7:560-71. [PMID: 21703989 DOI: 10.1016/j.nano.2011.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 05/04/2011] [Accepted: 05/16/2011] [Indexed: 10/18/2022]
Abstract
The loss of synapses and neurons in Alzheimer's disease (AD) is thought to be at least partly induced by toxic species formed by the amyloid beta (Aβ) peptide; therefore, therapeutics aimed at reducing Aβ toxicity could be of clinical use for treatment of AD. Liposomes are suitable vehicles for therapeutic agents and imaging probes, and a promising way of targeting the various Aβ forms. We tested liposomes functionalized with phosphatidic acid, cardiolipin, or GM1 ganglioside, previously shown to have high Aβ-binding capacity. Mimicking Aβ-induced toxicity in mouse neuroblastoma cell lines, combined with administration of cell viability-modulating agents, we observed that functionalized liposomes rescued cell viability to different extents. We also detected rescue of the imbalance of GSK-3β and PP2A activity, and reduction in tau phosphorylation. Thus, these liposomes appear particularly suitable for implementing further therapeutic strategies for AD.
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Affiliation(s)
- Erika Bereczki
- Department of Neurobiology, Care Sciences and Society, KI-Alzheimer Disease Research Center (KI-ADRC) Karolinska Institutet, Stockholm, Sweden
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30
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Airoldi C, Colombo L, Manzoni C, Sironi E, Natalello A, Doglia SM, Forloni G, Tagliavini F, Del Favero E, Cantù L, Nicotra F, Salmona M. Tetracycline prevents Aβ oligomer toxicity through an atypical supramolecular interaction. Org Biomol Chem 2011; 9:463-72. [DOI: 10.1039/c0ob00303d] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Gregori M, Cassina V, Brogioli D, Salerno D, De Kimpe L, Scheper W, Masserini M, Mantegazza F. Stability of Aβ (1-42) peptide fibrils as consequence of environmental modifications. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2010; 39:1613-23. [DOI: 10.1007/s00249-010-0619-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Revised: 06/15/2010] [Accepted: 07/14/2010] [Indexed: 01/05/2023]
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Taylor M, Moore S, Mayes J, Parkin E, Beeg M, Canovi M, Gobbi M, Mann DMA, Allsop D. Development of a proteolytically stable retro-inverso peptide inhibitor of beta-amyloid oligomerization as a potential novel treatment for Alzheimer's disease. Biochemistry 2010; 49:3261-72. [PMID: 20230062 DOI: 10.1021/bi100144m] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The formation of beta-amyloid (Abeta) deposits in the brain is likely to be a seminal step in the development of Alzheimer's disease. Recent studies support the hypothesis that Abeta soluble oligomers are toxic to cells and have potent effects on memory and learning. Inhibiting the early stages of Abeta aggregation could, therefore, provide a novel approach to treating the underlying cause of AD. We have designed a retro-inverso peptide (RI-OR2, H(2)N-r<--G<--k<--l<--v<--f<--f<--G<--r-Ac), based on a previously described inhibitor of Abeta oligomer formation (OR2, H(2)N-R-G-K-L-V-F-F-G-R-NH(2)). Unlike OR2, RI-OR2 was highly stable to proteolysis and completely resisted breakdown in human plasma and brain extracts. RI-OR2 blocked the formation of Abeta oligomers and fibrils from extensively deseeded preparations of Abeta(1-40) and Abeta(1-42), as assessed by thioflavin T binding, an immunoassay method for Abeta oligomers, SDS-PAGE separation of stable oligomers, and atomic force microscopy, and was more effective against Abeta(1-42) than Abeta(1-40). In surface plasmon resonance experiments, RI-OR2 was shown to bind to immobilized Abeta(1-42) monomers and fibrils, with an apparent K(d) of 9-12 muM, and also acted as an inhibitor of Abeta(1-42) fibril extension. In two different cell toxicity assays, RI-OR2 significantly reversed the toxicity of Abeta(1-42) toward cultured SH-SY5Y neuroblastoma cells. Thus, RI-OR2 represents a strong candidate for further development as a novel treatment for Alzheimer's disease.
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Affiliation(s)
- Mark Taylor
- Division of Biomedical and Life Sciences, School of Health and Medicine, Lancaster University, Lancaster LA1 4YQ, UK
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