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John T, Piantavigna S, Dealey TJA, Abel B, Risselada HJ, Martin LL. Lipid oxidation controls peptide self-assembly near membranes through a surface attraction mechanism. Chem Sci 2023; 14:3730-3741. [PMID: 37035708 PMCID: PMC10074436 DOI: 10.1039/d3sc00159h] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/17/2023] [Indexed: 03/06/2023] Open
Abstract
The self-assembly of peptides into supramolecular structures has been linked to neurodegenerative diseases but has also been observed in functional roles. Peptides are physiologically exposed to crowded environments of biomacromolecules, and particularly cellular membrane lipids. Previous research has shown that membranes can both accelerate and inhibit peptide self-assembly. Here, we studied the impact of membrane models that mimic cellular oxidative stress and compared this to mammalian and bacterial membranes. Using molecular dynamics simulations and experiments, we propose a model that explains how changes in peptide-membrane binding, electrostatics, and peptide secondary structure stabilization determine the nature of peptide self-assembly. We explored the influence of zwitterionic (POPC), anionic (POPG) and oxidized (PazePC) phospholipids, as well as cholesterol, and mixtures thereof, on the self-assembly kinetics of the amyloid β (1-40) peptide (Aβ40), linked to Alzheimer's disease, and the amyloid-forming antimicrobial peptide uperin 3.5 (U3.5). We show that the presence of an oxidized lipid had similar effects on peptide self-assembly as the bacterial mimetic membrane. While Aβ40 fibril formation was accelerated, U3.5 aggregation was inhibited by the same lipids at the same peptide-to-lipid ratio. We attribute these findings and peptide-specific effects to differences in peptide-membrane adsorption with U3.5 being more strongly bound to the membrane surface and stabilized in an α-helical conformation compared to Aβ40. Different peptide-to-lipid ratios resulted in different effects. We found that electrostatic interactions are a primary driving force for peptide-membrane interaction, enabling us to propose a model for predicting how cellular changes might impact peptide self-assembly in vivo.
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Affiliation(s)
- Torsten John
- School of Chemistry, Monash University Clayton VIC 3800 Australia
- Leibniz Institute of Surface Engineering (IOM) Permoserstraße 15 04318 Leipzig Germany
- Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Institute of Chemical Technology, Leipzig University Linnéstraße 3 04103 Leipzig Germany
| | | | - Tiara J A Dealey
- School of Chemistry, Monash University Clayton VIC 3800 Australia
| | - Bernd Abel
- Leibniz Institute of Surface Engineering (IOM) Permoserstraße 15 04318 Leipzig Germany
- Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Institute of Chemical Technology, Leipzig University Linnéstraße 3 04103 Leipzig Germany
| | - Herre Jelger Risselada
- Leibniz Institute of Surface Engineering (IOM) Permoserstraße 15 04318 Leipzig Germany
- Institute for Theoretical Physics, Georg-August-Universität Göttingen Friedrich-Hund-Platz 1 37077 Göttingen Germany
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Bollati M, Peqini K, Barone L, Natale C, Beeg M, Gobbi M, Diomede L, Trucchi M, de Rosa M, Pellegrino S. Rational Design of a Peptidomimetic Inhibitor of Gelsolin Amyloid Aggregation. Int J Mol Sci 2022; 23:ijms232213973. [PMID: 36430461 PMCID: PMC9698219 DOI: 10.3390/ijms232213973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/08/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
Gelsolin amyloidosis (AGel) is characterized by multiple systemic and ophthalmic features resulting from pathological tissue deposition of the gelsolin (GSN) protein. To date, no cure is available for the treatment of any form of AGel. More than ten single-point substitutions in the GSN gene are responsible for the occurrence of the disease and, among them, D187N/Y is the most widespread variant. These substitutions undergo an aberrant proteolytic cascade, producing aggregation-prone peptides of 5 and 8 kDa, containing the Gelsolin Amyloidogenic Core, spanning residues 182-192 (GAC182-192). Following a structure-based approach, we designed and synthesized three novel sequence-specific peptidomimetics (LB-5, LB-6, and LB-7) built on a piperidine-pyrrolidine unnatural amino acid. LB-5 and LB-6, but not LB-7, efficiently inhibit the aggregation of the GAC182-192 amyloidogenic peptides at sub-stoichiometric concentrations. These peptidomimetics resulted also effective in vivo, in a C. elegans-based assay, in counteracting the proteotoxicity of aggregated GAC182-192. These data pave the way to a novel pharmacological strategy against AGel and also validate a toolbox exploitable in other amyloidogenic diseases.
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Affiliation(s)
- Michela Bollati
- Institute of Biophysics, National Research Council (IBF-CNR), c/o Department of Biosciences, University of Milano, Via Celoria 26, 20133 Milano, Italy
| | - Kaliroi Peqini
- Department of Pharmaceutical Science, “A. Marchesini” General and Organic Chemistry Section, University of Milano, Via Venezian 21, 20133 Milano, Italy
| | - Luigi Barone
- Department of Pharmaceutical Science, “A. Marchesini” General and Organic Chemistry Section, University of Milano, Via Venezian 21, 20133 Milano, Italy
| | - Carmina Natale
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Marten Beeg
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Marco Gobbi
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Luisa Diomede
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Michelangelo Trucchi
- Institute of Biophysics, National Research Council (IBF-CNR), c/o Department of Biosciences, University of Milano, Via Celoria 26, 20133 Milano, Italy
| | - Matteo de Rosa
- Institute of Biophysics, National Research Council (IBF-CNR), c/o Department of Biosciences, University of Milano, Via Celoria 26, 20133 Milano, Italy
- Correspondence: (M.d.R.); (S.P.)
| | - Sara Pellegrino
- Department of Pharmaceutical Science, “A. Marchesini” General and Organic Chemistry Section, University of Milano, Via Venezian 21, 20133 Milano, Italy
- Correspondence: (M.d.R.); (S.P.)
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Molecular basis of the anchoring and stabilization of human islet amyloid polypeptide in lipid hydroperoxidized bilayers. Biochim Biophys Acta Gen Subj 2022; 1866:130200. [PMID: 35820640 DOI: 10.1016/j.bbagen.2022.130200] [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] [Received: 12/23/2021] [Revised: 06/25/2022] [Accepted: 07/02/2022] [Indexed: 01/18/2023]
Abstract
The molecular structure of membrane lipids is formed by mono- or polyunsaturations on their aliphatic tails that make them susceptible to oxidation, facilitating the incorporation of hydroperoxide (R-OOH) functional groups. Such groups promote changes in both composition and complexity of the membrane significantly modifying its physicochemical properties. Human Langerhans islets amyloid polypeptide (hIAPP) is the main component of amyloid deposits found in the pancreas of patients with type-2 diabetes (T2D). hIAPP in the presence of membranes with oxidized lipid species accelerates the formation of amyloid fibrils or the formation of intermediate oligomeric structures. However, the molecular bases at the initial stage of the anchoring and stabilization of the hIAPP in a hydroperoxidized membrane are not yet well understood. To shed some light on this matter, in this contribution, three bilayer models were modeled: neutral (POPC), anionic (POPS), and oxidized (POPCOOH), and full atom Molecular Dynamics (MD) simulations were performed. Our results show that the POPCOOH bilayer increases the helicity in hIAPP when compared to POPC or POPS bilayer. The modification in the secondary structure covers the residues of the so-called amyloidogenic core of the hIAPP. Overall, the hydroperoxidation of the neutral lipids modifies both the anchoring and the stabilization of the peptide hIAPP by reducing the random conformations of the peptide and increasing of hydrogen bond population with the hydroperoxidized lipids.
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Nie J, Yang J, Wei Y, Wei X. The role of oxidized phospholipids in the development of disease. Mol Aspects Med 2020; 76:100909. [PMID: 33023753 DOI: 10.1016/j.mam.2020.100909] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/29/2020] [Accepted: 09/21/2020] [Indexed: 02/05/2023]
Abstract
Oxidized phospholipids (OxPLs), complex mixtures of phospholipid oxidation products generated during normal or pathological processes, are increasingly recognized to show bioactive effects on many cellular signalling pathways. There is a growing body of evidence showing that OxPLs play an important role in many diseases, so it is essential to define the specific role of OxPLs in different diseases for the design of disease therapies. In vastly diverse pathological processes, OxPLs act as pro-inflammatory agents and contribute to the progression of many diseases; in addition, they play a role in anti-inflammatory processes, promoting the dissipation of inflammation and inhibiting the progression of some diseases. In addition to participating in the regulation of inflammatory responses, OxPLs affect the occurrence and development of diseases through other pathways, such as apoptosis promotion. In this review, the different and even opposite effects of different OxPL molecular species are discussed. Furthermore, the specific effects of OxPLs in various diseases, as well as the receptor and cellular mechanisms involved, are summarized.
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Affiliation(s)
- Ji Nie
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China; Department of Respiration, First People's Hospital of Yunnan Province, Yunnan, 650032, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, 650032, China
| | - Jing Yang
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China; Melanoma and Sarcoma Medical Oncology Unit, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Yuquan Wei
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiawei Wei
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China.
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Altered Expression Ratio of Actin-Binding Gelsolin Isoforms Is a Novel Hallmark of Mitochondrial OXPHOS Dysfunction. Cells 2020; 9:cells9091922. [PMID: 32824961 PMCID: PMC7563380 DOI: 10.3390/cells9091922] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/07/2020] [Accepted: 08/15/2020] [Indexed: 12/30/2022] Open
Abstract
Mitochondrial oxidative phosphorylation (OXPHOS) defects are the primary cause of inborn errors of energy metabolism. Despite considerable progress on their genetic basis, their global pathophysiological consequences remain undefined. Previous studies reported that OXPHOS dysfunction associated with complex III deficiency exacerbated the expression and mitochondrial location of cytoskeletal gelsolin (GSN) to promote cell survival responses. In humans, besides the cytosolic isoform, GSN presents a plasma isoform secreted to extracellular environments. We analyzed the interplay between both GSN isoforms in human cellular and clinical models of OXPHOS dysfunction. Regardless of its pathogenic origin, OXPHOS dysfunction induced the physiological upregulation of cytosolic GSN in the mitochondria (mGSN), in parallel with a significant downregulation of plasma GSN (pGSN) levels. Consequently, significantly high mGSN-to-pGSN ratios were associated with OXPHOS deficiency both in human cells and blood. In contrast, control cells subjected to hydrogen peroxide or staurosporine treatments showed no correlation between oxidative stress or cell death induction and the altered levels and subcellular location of GSN isoforms, suggesting their specificity for OXPHOS dysfunction. In conclusion, a high mitochondrial-to-plasma GSN ratio represents a useful cellular indicator of OXPHOS defects, with potential use for future research of a wide range of clinical conditions with mitochondrial involvement.
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Langenberg T, Gallardo R, van der Kant R, Louros N, Michiels E, Duran-Romaña R, Houben B, Cassio R, Wilkinson H, Garcia T, Ulens C, Van Durme J, Rousseau F, Schymkowitz J. Thermodynamic and Evolutionary Coupling between the Native and Amyloid State of Globular Proteins. Cell Rep 2020; 31:107512. [PMID: 32294448 PMCID: PMC7175379 DOI: 10.1016/j.celrep.2020.03.076] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 01/12/2020] [Accepted: 03/23/2020] [Indexed: 11/19/2022] Open
Abstract
The amyloid-like aggregation propensity present in most globular proteins is generally considered to be a secondary side effect resulting from the requirements of protein stability. Here, we demonstrate, however, that mutations in the globular and amyloid state are thermodynamically correlated rather than simply associated. In addition, we show that the standard genetic code couples this structural correlation into a tight evolutionary relationship. We illustrate the extent of this evolutionary entanglement of amyloid propensity and globular protein stability. Suppressing a 600-Ma-conserved amyloidogenic segment in the p53 core domain fold is structurally feasible but requires 7-bp substitutions to concomitantly introduce two aggregation-suppressing and three stabilizing amino acid mutations. We speculate that, rather than being a corollary of protein evolution, it is equally plausible that positive selection for amyloid structure could have been a driver for the emergence of globular protein structure.
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Affiliation(s)
- Tobias Langenberg
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Rodrigo Gallardo
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Rob van der Kant
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Nikolaos Louros
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Emiel Michiels
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Ramon Duran-Romaña
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Bert Houben
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Rafaela Cassio
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Hannah Wilkinson
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Teresa Garcia
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Chris Ulens
- Laboratory of Structural Neurobiology, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Joost Van Durme
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Frederic Rousseau
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium.
| | - Joost Schymkowitz
- Switch Laboratory, VIB Center for Brain and Disease Research, Herestraat 49, 3000 Leuven, Belgium; Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium.
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Vus K, Girych M, Trusova V, Gorbenko G, Kurutos A, Vasilev A, Gadjev N, Deligeorgiev T. Cyanine dyes derived inhibition of insulin fibrillization. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.149] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dingeldein A, Sparrman T, Gröbner G. Oxidatively stressed mitochondria-mimicking membranes: A molecular insight into their organization during apoptosis. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:2644-2654. [DOI: 10.1016/j.bbamem.2018.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 09/24/2018] [Accepted: 10/03/2018] [Indexed: 12/14/2022]
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Maury CPJ. Amyloid and the origin of life: self-replicating catalytic amyloids as prebiotic informational and protometabolic entities. Cell Mol Life Sci 2018; 75:1499-1507. [PMID: 29550973 PMCID: PMC5897472 DOI: 10.1007/s00018-018-2797-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/19/2018] [Accepted: 03/13/2018] [Indexed: 01/29/2023]
Abstract
A crucial stage in the origin of life was the emergence of the first molecular entity that was able to replicate, transmit information, and evolve on the early Earth. The amyloid world hypothesis posits that in the pre-RNA era, information processing was based on catalytic amyloids. The self-assembly of short peptides into β-sheet amyloid conformers leads to extraordinary structural stability and novel multifunctionality that cannot be achieved by the corresponding nonaggregated peptides. The new functions include self-replication, catalytic activities, and information transfer. The environmentally sensitive template-assisted replication cycles generate a variety of amyloid polymorphs on which evolutive forces can act, and the fibrillar assemblies can serve as scaffolds for the amyloids themselves and for ribonucleotides proteins and lipids. The role of amyloid in the putative transition process from an amyloid world to an amyloid-RNA-protein world is not limited to scaffolding and protection: the interactions between amyloid, RNA, and protein are both complex and cooperative, and the amyloid assemblages can function as protometabolic entities catalyzing the formation of simple metabolite precursors. The emergence of a pristine amyloid-based in-put sensitive, chiroselective, and error correcting information-processing system, and the evolvement of mutualistic networks were, arguably, of essential importance in the dynamic processes that led to increased complexity, organization, compartmentalization, and, eventually, the origin of life.
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Vus K, Girych M, Trusova V, Gorbenko G, Kinnunen P, Mizuguchi C, Saito H. Fluorescence study of the effect of the oxidized phospholipids on amyloid fibril formation by the apolipoprotein A-I N-terminal fragment. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.09.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Azouzi S, Santuz H, Morandat S, Pereira C, Côté F, Hermine O, El Kirat K, Colin Y, Le Van Kim C, Etchebest C, Amireault P. Antioxidant and Membrane Binding Properties of Serotonin Protect Lipids from Oxidation. Biophys J 2017; 112:1863-1873. [PMID: 28494957 DOI: 10.1016/j.bpj.2017.03.037] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 03/29/2017] [Accepted: 03/30/2017] [Indexed: 02/07/2023] Open
Abstract
Serotonin (5-hydroxytryptamine, 5-HT) is a well-known neurotransmitter that is involved in a growing number of functions in peripheral tissues. Recent studies have shown nonpharmacological functions of 5-HT linked to its chemical properties. Indeed, it was reported that 5-HT may, on the one hand, bind lipid membranes and, on the other hand, protect red blood cells through a mechanism independent of its specific receptors. To better understand these underevaluated properties of 5-HT, we combined biochemical, biophysical, and molecular dynamics simulations approaches to characterize, at the molecular level, the antioxidant capacity of 5-HT and its interaction with lipid membranes. To do so, 5-HT was added to red blood cells and lipid membranes bearing different degrees of unsaturation. Our results demonstrate that 5-HT acts as a potent antioxidant and binds with a superior affinity to lipids with unsaturation on both alkyl chains. We show that 5-HT locates at the hydrophobic-hydrophilic interface, below the glycerol group. This interfacial location is stabilized by hydrogen bonds between the 5-HT hydroxyl group and lipid headgroups and allows 5-HT to intercept reactive oxygen species, preventing membrane oxidation. Experimental and molecular dynamics simulations using membrane enriched with oxidized lipids converge to further reveal that 5-HT contributes to the termination of lipid peroxidation by direct interaction with active groups of these lipids and could also contribute to limit the production of new radicals. Taken together, our results identify 5-HT as a potent inhibitor of lipid peroxidation and offer a different perspective on the role of this pleiotropic molecule.
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Affiliation(s)
- Slim Azouzi
- Université Sorbonne Paris Cité, Université Paris Diderot, INSERM, Unité Biologie Intégrée du Globule Rouge UMR-S1134, Institut National de la Transfusion Sanguine, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Hubert Santuz
- Université Sorbonne Paris Cité, Université Paris Diderot, INSERM, Unité Biologie Intégrée du Globule Rouge UMR-S1134, Institut National de la Transfusion Sanguine, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Sandrine Morandat
- Sorbonne Universités, Université de Technologie de Compiègne, CNRS, Laboratoire de Génie Enzymatique et Cellulaire FRE 3580, Centre de Recherche Royallieu, Compiègne, France
| | - Catia Pereira
- Université Sorbonne Paris Cité, Université Paris Diderot, INSERM, Unité Biologie Intégrée du Globule Rouge UMR-S1134, Institut National de la Transfusion Sanguine, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Francine Côté
- Université Sorbonne Paris Cité, Université Paris Descartes, INSERM, CNRS, Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutic Implications U1163, Institut Imagine, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Olivier Hermine
- Université Sorbonne Paris Cité, Université Paris Descartes, INSERM, CNRS, Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutic Implications U1163, Institut Imagine, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Karim El Kirat
- Sorbonne Universités, Université de Technologie de Compiègne, CNRS, Laboratoire de BioMécanique et BioIngénierie UMR 7338, Centre de Recherche Royallieu, Compiègne cedex, France
| | - Yves Colin
- Université Sorbonne Paris Cité, Université Paris Diderot, INSERM, Unité Biologie Intégrée du Globule Rouge UMR-S1134, Institut National de la Transfusion Sanguine, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Caroline Le Van Kim
- Université Sorbonne Paris Cité, Université Paris Diderot, INSERM, Unité Biologie Intégrée du Globule Rouge UMR-S1134, Institut National de la Transfusion Sanguine, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Catherine Etchebest
- Université Sorbonne Paris Cité, Université Paris Diderot, INSERM, Unité Biologie Intégrée du Globule Rouge UMR-S1134, Institut National de la Transfusion Sanguine, Laboratoire d'Excellence GR-Ex, Paris, France.
| | - Pascal Amireault
- Université Sorbonne Paris Cité, Université Paris Diderot, INSERM, Unité Biologie Intégrée du Globule Rouge UMR-S1134, Institut National de la Transfusion Sanguine, Laboratoire d'Excellence GR-Ex, Paris, France; Université Sorbonne Paris Cité, Université Paris Descartes, INSERM, CNRS, Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutic Implications U1163, Institut Imagine, Laboratoire d'Excellence GR-Ex, Paris, France.
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Tanaka M, Nishimura A, Takeshita H, Takase H, Yamada T, Mukai T. Effect of lipid environment on amyloid fibril formation of human serum amyloid A. Chem Phys Lipids 2017; 202:6-12. [DOI: 10.1016/j.chemphyslip.2016.11.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 11/14/2016] [Accepted: 11/14/2016] [Indexed: 10/20/2022]
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Abe A, Hiraoka M, Ohguro H, Tesmer JJ, Shayman JA. Preferential hydrolysis of truncated oxidized glycerophospholipids by lysosomal phospholipase A2. J Lipid Res 2016; 58:339-349. [PMID: 27993948 DOI: 10.1194/jlr.m070730] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 12/08/2016] [Indexed: 01/18/2023] Open
Abstract
Truncated oxidized glycerophospholipids (ox-PLs) are bioactive lipids resulting from oxidative stress. The catabolic pathways for truncated ox-PLs are not fully understood. Lysosomal phospholipase A2 (LPLA2) with phospholipase A and transacylase activities is a key enzyme in phospholipid homeostasis. The present study assessed whether LPLA2 could hydrolyze truncated ox-PLs. Incubation of LPLA2 with liposomes consisting of 1,2-O-octadecenyl-sn-glycero-3-phosphocholine (DODPC)/1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) or truncated oxidized phosphatidylcholine (ox-PC)/N-acetylsphingosine (NAS) under acidic conditions resulted in the preferential deacylation at the sn-1 position of the truncated ox-PCs. Additionally, the release of free fatty acid from the truncated ox-PCs preferentially occurred compared with the NAS-acylation. Incubation of LPLA2 with the liposomes consisting of DODPC/DOPC/truncated ox-PC/NAS resulted in the same preferential fatty acid release from the truncated ox-PC. The cationic amphiphilic drug, amiodarone, did not inhibit such fatty acid release, indicating that truncated ox-PCs partition from the lipid membrane into the aqueous phase and react with free LPLA2. Consistent with this mechanism, the hydrolysis of some truncated ox-PCs, but not DOPC, by LPLA2 was detected at neutral pH. Additionally, LPLA2-overexpressed Chinese hamster ovary cells efficiently catabolized truncated ox-PC and were protected from growth inhibition. These findings support the existence of a novel catabolic pathway for truncated ox-PLs via LPLA2.
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Affiliation(s)
- Akira Abe
- Department of Ophthalmology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Miki Hiraoka
- Department of Ophthalmology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Hiroshi Ohguro
- Department of Ophthalmology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - John J Tesmer
- Life Sciences Institute and Departments of Pharmacology, Biological Chemistry, University of Michigan, Ann Arbor, MI
| | - James A Shayman
- Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, MI
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14
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Pihlamaa T, Suominen S, Kiuru-Enari S, Tanskanen M. Increasing amount of amyloid are associated with the severity of clinical features in hereditary gelsolin (AGel) amyloidosis. Amyloid 2016; 23:225-233. [PMID: 27879149 DOI: 10.1080/13506129.2016.1238355] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Patients with hereditary gelsolin (AGel) amyloidosis (HGA) present with hanging skin (cutis laxa) and bilateral cranial neuropathy, and require symptomatic plastic surgery. Our clinical observation of tissue fragility prompted us to design a prospective study. METHODS Twenty-nine patients with HGA undergoing surgery were interviewed and clinically examined. The height and thickness of skin folds in standard anatomical localizations were measured. The presence and distribution of amyloid in skin samples were analyzed using Congo red staining and immunohistochemistry using antibodies against gelsolin amyloid (AGel) subunit. RESULTS The measured skin folds stretched more in patients with HGA (e.g. skin over olecranon, p < 0.001). The skin folds were thinner in patients with HGA (e.g. forehead skin, p < 0.001). The skin and subcutaneous fat were abnormally fragile during surgery. The total amount of AGel amyloid, and its presence in the deep layers of the skin and subcutaneous fat correlated with the measurements of skin folds, age and extent of cranial neuropathy. CONCLUSIONS The AGel amyloid in the skin and subcutis, together with morphologic changes in the dermal stroma and skin adnexa contribute to the atrophied and fragile structure of HGA skin. This is the first study to demonstrate the correlation between AGel amyloid accumulation and clinical disease severity.
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Affiliation(s)
- Tiia Pihlamaa
- a Department of Plastic and Reconstructive Surgery , Helsinki University Hospital , Helsinki , Finland
| | - Sinikka Suominen
- a Department of Plastic and Reconstructive Surgery , Helsinki University Hospital , Helsinki , Finland
| | - Sari Kiuru-Enari
- b Department of Neurology , Clinical Neurosciences, University of Helsinki , Helsinki , Finland , and
| | - Maarit Tanskanen
- c Department of Pathology , University of Helsinki and HUSLAB , Helsinki , Finland
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15
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Vus K, Sood R, Gorbenko G, Kinnunen P. Fluorescence monitoring of the effect of oxidized lipids on the process of protein fibrillization. Methods Appl Fluoresc 2016; 4:034008. [PMID: 28355154 DOI: 10.1088/2050-6120/4/3/034008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The kinetics of lysozyme and insulin amyloid formation in the presence of the oxidized phospholipids (oxPLs) was investigated using Thioflavin T fluorescence assay. The kinetic parameters of fibrillization process (lag time and apparent rate constant) have been determined upon varying the following experimental parameters: the type of lipid assemblies (premicellar aggregates and lipid bilayer vesicles), pH, temperature and lipid-to-protein molar ratio. It was found that oxPLs premicellar aggregates induced the more pronounced increase of the maximum Thioflavin T fluorescence, which is proportional to the extent of fibril formation, compared to the vesicles composed of the oxidized and unoxidized lipids. In contrast, the oxPLs, used as dispersions or included into vesicles, inhibited fibril nucleation and elongation under near-physiological conditions in vitro compared to liposomes containing unoxidized lipids. The results obtained provide deeper insight into the molecular mechanisms of the oxidative stress-modulated conformational diseases, and could be employed for the anti-amyloid drug development.
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Affiliation(s)
- Kateryna Vus
- Department of Nuclear and Medical Physics, V.N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61022, Ukraine. Department of Nuclear and Medical Physics, V.N. Karazin Kharkiv National University, 12-38 Aeroflotska Str., Kharkiv 61031, Ukraine
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16
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Koskelainen S, Pihlamaa T, Suominen S, Zhao F, Salo T, Risteli J, Baumann M, Kalimo H, Kiuru-Enari S. Gelsolin amyloid angiopathy causes severe disruption of the arterial wall. APMIS 2016; 124:639-48. [PMID: 27198069 DOI: 10.1111/apm.12554] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 04/18/2016] [Indexed: 11/26/2022]
Abstract
Hereditary gelsolin amyloidosis (HGA) is a dominantly inherited systemic disease reported worldwide. HGA is characterized by ophthalmological, neurological, and dermatological manifestations. AGel amyloid accumulates at basal lamina of epithelial and muscle cells, thus amyloid angiopathy is encountered in nearly every organ. HGA patients have cardiovascular, hemorrhagic, and potentially vascularly induced neurological problems. To clarify pathomechanisms of AGel angiopathy, we performed histological, immunohistochemical, and electron microscopic analyses on facial temporal artery branches from 8 HGA patients and 13 control subjects. We demonstrate major pathological changes in arteries: disruption of the tunica media, disorganization of vascular smooth muscle cells, and accumulation of AGel fibrils in arterial walls, where they associate with the lamina elastica interna, which becomes fragmented and diminished. We also provide evidence of abnormal accumulation and localization of collagen types I and III and an increase of collagen type I degradation product in the tunica media. Vascular smooth muscle cells appear to be morphologically and semi-quantitatively normal, only their basal lamina is often thickened. In conclusion, angiopathy in HGA results in severe disruption of arterial walls, characterized by prominent AGel deposition, collagen derangement and severe elastolysis, and it may be responsible for several, particularly hemorrhagic, disease manifestations in HGA.
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Affiliation(s)
- Susanna Koskelainen
- Meilahti Clinical Proteomics Core Facility, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Tiia Pihlamaa
- Department of Plastic Surgery, Helsinki University Hospital, Helsinki, Finland
| | - Sinikka Suominen
- Department of Plastic Surgery, Helsinki University Hospital, Helsinki, Finland
| | - Fang Zhao
- Advanced Microscopy Unit, Medicum, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Tuula Salo
- Research Group of Cancer and Translational Medicine, Medical Faculty, University of Oulu, Oulu, Finland.,Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Juha Risteli
- Research Group of Cancer and Translational Medicine, Medical Faculty, University of Oulu, Oulu, Finland.,Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Marc Baumann
- Meilahti Clinical Proteomics Core Facility, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Hannu Kalimo
- Department of Pathology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Forensic Medicine, Institute of Biomedicine, University of Turku, Turku, Finland
| | - Sari Kiuru-Enari
- Clinical Neurosciences, Neurology, University of Helsinki, Helsinki, Finland
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17
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Amirkavei M, Kinnunen PKJ. Interactions and dynamics of two extended conformation adapting phosphatidylcholines in model biomembranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1858:264-73. [PMID: 26656184 DOI: 10.1016/j.bbamem.2015.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 11/11/2015] [Accepted: 12/03/2015] [Indexed: 11/18/2022]
Abstract
In order to obtain molecular level insight into the biophysics of the apoptosis promoting phospholipid 1-palmitoyl-2-azelaoyl-sn-glycero-3-phosphocholine (PazePC) we studied its partitioning into different lipid phases by isothermal titration calorimetry (ITC). To aid the interpretation of these data for PazePC, we additionally characterized by both ITC and fluorescence spectroscopy the fluorescent phospholipid analog 1-palmitoyl-2-{6-[(7-nitro-2-1,3-benzoxadiazol-4-yl)amino]hexanoyl}-sn-glycero-3-phosphocholine (NBD-C6-PC), which similarly to PazePC can adopt extended conformation in lipid bilayers. With the NBD-hexanoyl chain reversing its direction and extending into the aqueous space out of the bilayer, 7-nitro-2,1,3-benzoxadiazol-4-yl (NBD) becomes accessible to the water soluble dithionite, which reduces to non-fluorescent product. Our results suggest that these phospholipid derivatives first partition and penetrate into the outer bilayer leaflet of liquid disordered phase liposomes composed of unsaturated 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC). Upon increase up to 2 mol% PazePC and NBD-C6-PC of the overall content, flip-flop from the outer into the inner bilayer leaflet commences. Interestingly, the presence of 40 mol% cholesterol in POPC liposomes did not abrogate the partitioning of PazePC into the liquid ordered phase. In contrast, only insignificant partitioning of PazePC and NBD-C6-PC into sphingomyelin/cholesterol liposomes was evident, highlighting a specific membrane permeability barrier function of this particular lipid composition against oxidatively truncated PazePC, thus emphasizing the importance of detailed characterization of the biophysical properties of membranes found in different cellular organelles, in terms of providing barriers for lipid-mediated cellular signals in processes such as apoptosis. Our data suggest NBD-C6-PC to represent useful fluorescent probe to study the cellular dynamics of oxidized phospholipid species, such as PazePC.
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Affiliation(s)
- Mooud Amirkavei
- Helsinki Biophysics & Biomembrane group, Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, Espoo, Finland
| | - Paavo K J Kinnunen
- Helsinki Biophysics & Biomembrane group, Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, Espoo, Finland.
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18
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Singh G, Chamberlin AC, Zhekova HR, Noskov SY, Tieleman DP. Two-Dimensional Potentials of Mean Force of Nile Red in Intact and Damaged Model Bilayers. Application to Calculations of Fluorescence Spectra. J Chem Theory Comput 2015; 12:364-71. [PMID: 26579726 DOI: 10.1021/acs.jctc.5b00520] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Fluorescent dyes revolutionized and expanded our understanding of biological membranes. The interpretation of experimental fluorescence data in terms of membrane structure, however, requires detailed information about the molecular environment of the dyes. Nile red is a fluorescent molecule whose excitation and emission maxima depend on the polarity of the solvent. It is mainly used as a probe to study lipid microenvironments, for example in imaging the progression of damage to the myelin sheath in multiple sclerosis. In this study, we determine the position and orientation of Nile red in lipid bilayers by calculating two-dimensional Potential of Mean Force (2D-PMF) profiles in a defect-free 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) bilayer and in damaged bilayers containing two mixtures of the oxidized lipid 1-palmitoyl-2-(9'-oxo-nonanoyl)-sn-glycero-3-phosphocholine and POPC. From 2D-PMF simulations we obtain positions and orientations of Nile Red corresponding to the minimum on the binding free energy surface in three different membrane environments with increasing amounts of water, mimicking damage in biological tissue. Using representative snapshots from the simulations, we use combined quantum mechanical/molecular mechanical (QM/MM) models to calculate the emission spectrum of Nile red as a function of its local solvation environment. The results of QM and QM/MM computations are in qualitative agreement with the experimentally observed shift in fluorescence for the dye moving from aqueous solution to the more hydrophobic environment of the lipid interiors. The range of the conformation dependent values of the computed absorption-emission spectra and the lack of solvent relaxation effects in the QM/MM calculations made it challenging to delineate specific differences between the intact and damaged bilayers.
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Affiliation(s)
- Gurpreet Singh
- Department of Biological Sciences and Centre for Molecular Simulation, University of Calgary , 2500 University Drive N.W., Calgary, Alberta T2N1N4, Canada
| | - Adam C Chamberlin
- Department of Biological Sciences and Centre for Molecular Simulation, University of Calgary , 2500 University Drive N.W., Calgary, Alberta T2N1N4, Canada
| | - Hristina R Zhekova
- Department of Biological Sciences and Centre for Molecular Simulation, University of Calgary , 2500 University Drive N.W., Calgary, Alberta T2N1N4, Canada
| | - Sergei Y Noskov
- Department of Biological Sciences and Centre for Molecular Simulation, University of Calgary , 2500 University Drive N.W., Calgary, Alberta T2N1N4, Canada
| | - D Peter Tieleman
- Department of Biological Sciences and Centre for Molecular Simulation, University of Calgary , 2500 University Drive N.W., Calgary, Alberta T2N1N4, Canada
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19
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Wallgren M, Beranova L, Pham QD, Linh K, Lidman M, Procek J, Cyprych K, Kinnunen PKJ, Hof M, Gröbner G. Impact of oxidized phospholipids on the structural and dynamic organization of phospholipid membranes: a combined DSC and solid state NMR study. Faraday Discuss 2013; 161:499-513; discussion 563-89. [PMID: 23805755 DOI: 10.1039/c2fd20089a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Membranes undergo severe changes under oxidative stress conditions due to the creation of oxidized phospholipid (OxPL) species, which possess molecular properties quite different from their parental lipid components. These OxPLs play crucial roles in various pathological disorders and their occurrence is involved in the onset of intrinsic apoptosis, a fundamental pathway in programmed mammalian cell death. However, the molecular mechanisms by which these lipids can exert their apoptotic action via their host membranes (e.g., altering membrane protein function) are poorly understood. Therefore, we studied the impact of OxPLs on the organization and biophysical properties of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) based lipid membranes by differential scanning calorimetry (DSC) and solid state nuclear magnetic resonance (NMR) spectroscopy. Incorporation of defined OxPLs with either a carboxyl group (1-palmitoyl-2-azelaoyl-sn-glycero-3-phosphocholine (PazePC)) or aldehyde (1-palmitoyl-(9'oxononanoyl)-sn-glycero-3-phosphocholine (PoxnoPC)) at their truncated sn-2-chain ends enabled us to reveal OxPL species-dependent differences. The calorimetric studies revealed significant effects of OxPLs on the thermotropic phase behavior of DMPC bilayers, especially at elevated levels where PazePC induced more pronounced effects than PoxnoPC. Temperature-dependent changes in the solid state 31P NMR spectra, which provided information of the lipid headgroup region in these mixed membrane systems, reflected this complex phase behavior. In the temperature region between 293 K (onset of the Lalpha-phase) and 298 K, two overlapping NMR spectra were visible which reflect the co-existence of two liquid-crystalline lamellar phases with presumably one reflecting OxPL-poor domains and the other OxPL-rich domains. Deconvolution of the DSC profiles also revealed these two partially overlapping thermal events. In addition, a third thermal, non-NMR-visible, event occurred at low temperatures, which can most likely be associated to a solid-phase mixing/demixing process of the OxPL-containing membranes. The observed phase transitions were moved to higher temperatures in the presence of heavy water due its condensing effect, where additional wideline 2H-NMR studies revealed a complex hydration pattern in the presence of OxPLs.
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Affiliation(s)
- Marcus Wallgren
- Department of Chemistry, Umeå University, Umeå, Sweden SE-901 87
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20
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Abstract
Hereditary gelsolin amyloidosis (HGA) is an autosomally dominantly inherited form of systemic amyloidosis, characterized mainly by cranial and sensory peripheral neuropathy, corneal lattice dystrophy, and cutis laxa. HGA, originally reported from Finland and now increasingly from other countries in Europe, North and South America, and Asia, may still be underdiagnosed worldwide. It is the first and so-far only known disorder caused by a gelsolin gene defect, namely a G654A or G654T mutation. Gelsolin is a principal actin-modulating protein, implicated in multiple biological processes, also in the nervous system, e.g. axonal transport, myelination, neurite outgrowth, and neuroprotection. The gelsolin gene defect causes expression of variant gelsolin, followed by systemic deposition of gelsolin amyloid (AGel) in HGA patients and even other consequences on the metabolism and function of gelsolin. In HGA, specific therapy is not yet available but correct diagnosis enables adequate symptomatic treatment which decisively improves the quality of life in these patients. A transgenic murine model of HGA expressing AGel is available, in anticipation of new treatment options targeted toward this slowly progressive but devastating amyloidosis. Present and future lessons learned from HGA may be applicable even in diagnosis and treatment of other hereditary and sporadic amyloidoses.
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Affiliation(s)
- Sari Kiuru-Enari
- Department of Neurology, Unit for Neuromuscular Diseases, Helsinki University Central Hospital, Helsinki, Finland.
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21
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Kinnunen PKJ, Kaarniranta K, Mahalka AK. Protein-oxidized phospholipid interactions in cellular signaling for cell death: from biophysics to clinical correlations. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2012; 1818:2446-55. [PMID: 22542574 DOI: 10.1016/j.bbamem.2012.04.008] [Citation(s) in RCA: 233] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 03/02/2012] [Accepted: 04/10/2012] [Indexed: 11/26/2022]
Abstract
Oxidative stress is associated with several major ailments. However, it is only recently that the developments in our molecular level understanding of the consequences of oxidative stress in modifying the chemical structures of biomolecules, lipids in particular, are beginning to open new emerging insights into the significance of oxidative stress in providing mechanistic insights into the etiologies of these diseases. In this brief review we will first discuss the role of lipid oxidation in controlling the membrane binding of cytochrome c, a key protein in the control of apoptosis. We then present an overview of the impact of oxidized phospholipids on the biophysical properties of lipid bilayers and continue to discuss, how these altered properties can account for the observed enhancement of formation of intermediate state oligomers by cytotoxic amyloid forming peptides associated with pathological conditions as well as host defense peptides of innate immunity. In the third part, we will discuss how the targeting of oxidized phospholipids by i) pathology associated peptides and ii) host defense peptides can readily explain the observed clinical correlations associating Alzheimer's and Parkinson's diseases with increased risk for type 2 diabetes and age-related macular degeneration, and the apparent protective effect of Alzheimer's and Parkinson's diseases from some cancers, as well as the inverse, apparent protection by cancer from Alzheimer's and Parkinson's diseases. This article is part of a Special Issue entitled: Oxidized phospholipids-Their properties and interactions with proteins.
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Affiliation(s)
- Paavo K J Kinnunen
- Department of Biomedical Engineering and Computational Science, Aalto University, Espoo, Finland.
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22
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Solomon JP, Page LJ, Balch WE, Kelly JW. Gelsolin amyloidosis: genetics, biochemistry, pathology and possible strategies for therapeutic intervention. Crit Rev Biochem Mol Biol 2012; 47:282-96. [PMID: 22360545 DOI: 10.3109/10409238.2012.661401] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Protein misassembly into aggregate structures, including cross-β-sheet amyloid fibrils, is linked to diseases characterized by the degeneration of post-mitotic tissue. While amyloid fibril deposition in the extracellular space certainly disrupts cellular and tissue architecture late in the course of amyloid diseases, strong genetic, pathological and pharmacologic evidence suggests that the process of amyloid fibril formation itself, known as amyloidogenesis, likely causes these maladies. It seems that the formation of oligomeric aggregates during the amyloidogenesis process causes the proteotoxicity and cytotoxicity characteristic of these disorders. Herein, we review what is known about the genetics, biochemistry and pathology of familial amyloidosis of Finnish type (FAF) or gelsolin amyloidosis. Briefly, autosomal dominant D187N or D187Y mutations compromise Ca(2+) binding in domain 2 of gelsolin, allowing domain 2 to sample unfolded conformations. When domain 2 is unfolded, gelsolin is subject to aberrant furin endoproteolysis as it passes through the Golgi on its way to the extracellular space. The resulting C-terminal 68 kDa fragment (C68) is susceptible to extracellular endoproteolytic events, possibly mediated by a matrix metalloprotease, affording 8 and 5 kDa amyloidogenic fragments of gelsolin. These amyloidogenic fragments deposit systemically, causing a variety of symptoms including corneal lattice dystrophy and neurodegeneration. The first murine model of the disease recapitulates the aberrant processing of mutant plasma gelsolin, amyloid deposition, and the degenerative phenotype. We use what we have learned from our biochemical studies, as well as insight from mouse and human pathology to propose therapeutic strategies that may halt the progression of FAF.
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Affiliation(s)
- James P Solomon
- Departments of Chemistry and Molecular and Experimental Medicine, The Skaggs Institute for Chemical Biology, La Jolla, CA, USA
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23
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Milic I, Fedorova M, Teuber K, Schiller J, Hoffmann R. Characterization of oxidation products from 1-palmitoyl-2-linoleoyl-sn-glycerophosphatidylcholine in aqueous solutions and their reactions with cysteine, histidine and lysine residues. Chem Phys Lipids 2011; 165:186-96. [PMID: 22222463 DOI: 10.1016/j.chemphyslip.2011.12.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 10/02/2011] [Accepted: 12/15/2011] [Indexed: 12/13/2022]
Abstract
This report focuses on studies of lipid peroxidation products reactivity towards the side chains of cysteine, histidine, and lysine residues in structurally unordered peptides. Thus we have analyzed linoleic acid peroxidation products (LaPP) obtained by incubating 1-palmitoyl-2-linoleoyl-sn-glycerophosphatidylcholine (PLPC) overnight with or without H(2)O(2) in the presence or absence of CuCl. In total, 55 different LaPP were identified with 26 containing reactive carbonyl groups. The strongest oxidation conditions (H(2)O(2) and Cu(I), i.e. a Fenton-like reagent) yielded 51 LaPP, whereas air oxidation produced only 12 LaPP. Independent of the oxidation conditions, around half of all LaPP were short-chain (oxidative cleavage) and the others long-chain (oxygen addition) PLPC oxidation products. The stronger oxidation conditions increased the number of LaPP, but also oxidized the added peptide Ac-PAAPAAPAPAEXTPV-OH (X=Cys, His or Lys) very quickly, especially under Fenton conditions. Thus, PLPC was oxidized by milder conditions (air or Cu(I)), incubated with the peptide and the peptide modifications were then analyzed by nano-RPC-ESI-Orbitrap-MS. Ten LaPP-derived peptide modifications were identified at lysine, whereas nine products were identified for cysteine and only three for histidine. Three high molecular weight LaPP still esterified to the GPC backbone were detected on Lys-containing peptide. Furthermore, three LaPP-derived mass shifts were obtained at cysteine, which have not previously been reported.
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Affiliation(s)
- Ivana Milic
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Universität Leipzig, Leipzig, Germany
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