1
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Sandt C. Identification and classification of proteins by FTIR microspectroscopy. A proof of concept. Biochim Biophys Acta Gen Subj 2024; 1868:130688. [PMID: 39117047 DOI: 10.1016/j.bbagen.2024.130688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 07/23/2024] [Accepted: 08/05/2024] [Indexed: 08/10/2024]
Abstract
FTIR spectroscopy is well known for its molecule fingerprinting capability but is also able to differentiate classes in complex biological systems. This includes strain typing and species level identification of bacterial, yeast or fungal cells, as well as distinguishing between cell layers in eukaryotic tissues. However, its use for the identification of macromolecules such as proteins remains underexplored and rarely used in practice. Here we demonstrate the efficacy of FTIR microspectroscopy coupled with machine learning methods for rapid and accurate identification of proteins in their dry state within minutes, from very small quantities of material, if they are obtained in a pure aqueous solution. FTIR microspectroscopy can provide additional information beside identification: it can detect small differences among different purification batches potentially originating from post-translational modifications or distinct folding states. Moreover, it distinguishes glycoproteins and evaluate glycosylation while detecting contaminants. This methodology presents itself as a valuable quality control tool in protein purification processes or any process requiring the utilization of precisely identified, pure proteins.
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Affiliation(s)
- Christophe Sandt
- SMIS beamline, Synchrotron SOLEIL, RD128, 91190 Saint Aubin, France.
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2
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Mayo P, Pascual J, Crisman E, Domínguez C, López MG, León R. Innovative pathological network-based multitarget approaches for Alzheimer's disease treatment. Med Res Rev 2024. [PMID: 38678582 DOI: 10.1002/med.22045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/02/2024] [Accepted: 04/14/2024] [Indexed: 05/01/2024]
Abstract
Alzheimer's disease (AD) is the most prevalent neurodegenerative disease and is a major health threat globally. Its prevalence is forecasted to exponentially increase during the next 30 years due to the global aging population. Currently, approved drugs are merely symptomatic, being ineffective in delaying or blocking the relentless disease advance. Intensive AD research describes this disease as a highly complex multifactorial disease. Disclosure of novel pathological pathways and their interconnections has had a major impact on medicinal chemistry drug development for AD over the last two decades. The complex network of pathological events involved in the onset of the disease has prompted the development of multitarget drugs. These chemical entities combine pharmacological activities toward two or more drug targets of interest. These multitarget-directed ligands are proposed to modify different nodes in the pathological network aiming to delay or even stop disease progression. Here, we review the multitarget drug development strategy for AD during the last decade.
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Affiliation(s)
- Paloma Mayo
- Departamento de desarrollo preclínico, Fundación Teófilo Hernando, Las Rozas, Madrid, Spain
- Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
- Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (IQM-CSIC), Madrid, Spain
| | - Jorge Pascual
- Departamento de desarrollo preclínico, Fundación Teófilo Hernando, Las Rozas, Madrid, Spain
- Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (IQM-CSIC), Madrid, Spain
| | - Enrique Crisman
- Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (IQM-CSIC), Madrid, Spain
| | - Cristina Domínguez
- Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (IQM-CSIC), Madrid, Spain
| | - Manuela G López
- Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Rafael León
- Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (IQM-CSIC), Madrid, Spain
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3
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Gassner C, Vongsvivut J, Ng SH, Ryu M, Tobin MJ, Juodkazis S, Morikawa J, Wood BR. Linearly Polarized Infrared Spectroscopy for the Analysis of Biological Materials. APPLIED SPECTROSCOPY 2023; 77:977-1008. [PMID: 37464791 DOI: 10.1177/00037028231180233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The analysis of biological samples with polarized infrared spectroscopy (p-IR) has long been a widely practiced method for the determination of sample orientation and structural properties. In contrast to earlier works, which employed this method to investigate the fundamental chemistry of biological systems, recent interests are moving toward "real-world" applications for the evaluation and diagnosis of pathological states. This focal point review provides an up-to-date synopsis of the knowledge of biological materials garnered through linearly p-IR on biomolecules, cells, and tissues. An overview of the theory with special consideration to biological samples is provided. Different modalities which can be employed along with their capabilities and limitations are outlined. Furthermore, an in-depth discussion of factors regarding sample preparation, sample properties, and instrumentation, which can affect p-IR analysis is provided. Additionally, attention is drawn to the potential impacts of analysis of biological samples with inherently polarized light sources, such as synchrotron light and quantum cascade lasers. The vast applications of p-IR for the determination of the structure and orientation of biological samples are given. In conclusion, with considerations to emerging instrumentation, findings by other techniques, and the shift of focus toward clinical applications, we speculate on the future directions of this methodology.
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Affiliation(s)
- Callum Gassner
- Centre for Biospectroscopy, School of Chemistry, Monash University, Clayton, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, ANSTO-Australian Synchrotron, Clayton, Australia
| | - Soon Hock Ng
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, Australia
| | - Meguya Ryu
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, ANSTO-Australian Synchrotron, Clayton, Australia
| | - Saulius Juodkazis
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, Australia
| | - Junko Morikawa
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo, Japan
| | - Bayden R Wood
- Centre for Biospectroscopy, School of Chemistry, Monash University, Clayton, Australia
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4
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Kikuchi H, Takahashi M, Komatsu H, Axelsen PH. Post-Translational Chemical Modification of Amyloid-β Peptides by 4-Hydroxy-2-Nonenal. J Alzheimers Dis 2023; 92:499-511. [PMID: 36776059 DOI: 10.3233/jad-220940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
BACKGROUND The extraction and quantification of amyloid-β (Aβ) peptides in brain tissue commonly uses formic acid (FA) to disaggregate Aβ fibrils. However, it is not clear whether FA can disaggregate post-translationally modified Aβ peptides, or whether it induces artifact by covalent modification during disaggregation. Of particular interest are Aβ peptides that have been covalently modified by 4-hydroxy-2-nonenal (HNE), an oxidative lipid degradation product produced in the vicinity of amyloid plaques that dramatically accelerates the aggregation of Aβ peptides. OBJECTIVE Test the ability of FA to disaggregate Aβ peptides modified by HNE and to induce covalent artifacts. METHODS Quantitative liquid-chromatography-tandem-mass spectrometry of monomeric Aβ peptides and identify covalently modified forms. RESULTS FA disaggregated ordinary Aβ fibrils but also induced the time-dependent formylation of at least 2 residue side chains in Aβ peptides, as well as oxidation of its methionine side chain. FA was unable to disaggregate Aβ peptides that had been covalently modified by HNE. CONCLUSION The inability of FA to disaggregate Aβ peptides modified by HNE prevents FA-based approaches from quantifying a pool of HNE-modified Aβ peptides in brain tissue that may have pathological significance.
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Affiliation(s)
- Hiroyuki Kikuchi
- Department of Pharmacology, 1009C Stellar Chance Laboratories, University of Pennsylvania, Philadelphia, PA, USA
- Present address: Division of Foods, National Institute of Health Sciences, Kawasaki City, Kanagawa, Japan
| | - Miki Takahashi
- Department of Pharmacology, 1009C Stellar Chance Laboratories, University of Pennsylvania, Philadelphia, PA, USA
- Present address: College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Hiroaki Komatsu
- Department of Pharmacology, 1009C Stellar Chance Laboratories, University of Pennsylvania, Philadelphia, PA, USA
| | - Paul H Axelsen
- Department of Pharmacology, 1009C Stellar Chance Laboratories, University of Pennsylvania, Philadelphia, PA, USA
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5
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Picone P, Sanfilippo T, Vasto S, Baldassano S, Guggino R, Nuzzo D, Bulone D, San Biagio PL, Muscolino E, Monastero R, Dispenza C, Giacomazza D. From Small Peptides to Large Proteins against Alzheimer’sDisease. Biomolecules 2022; 12:biom12101344. [PMID: 36291553 PMCID: PMC9599460 DOI: 10.3390/biom12101344] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/15/2022] [Accepted: 09/17/2022] [Indexed: 11/16/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common neurodegenerative disorder in the elderly. The two cardinal neuropathological hallmarks of AD are the senile plaques, which are extracellular deposits mainly constituted by beta-amyloids, and neurofibrillary tangles formed by abnormally phosphorylated Tau (p-Tau) located in the cytoplasm of neurons. Although the research has made relevant progress in the management of the disease, the treatment is still lacking. Only symptomatic medications exist for the disease, and, in the meantime, laboratories worldwide are investigating disease-modifying treatments for AD. In the present review, results centered on the use of peptides of different sizes involved in AD are presented.
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Affiliation(s)
- Pasquale Picone
- Istituto per la Ricerca e l’Innovazione Biomedica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
- Dipartmento of Scienze Biologiche, Chimiche, Farmaceutiche e Tecnologiche (STEBICEF), University of Palermo, 90128 Palermo, Italy
| | - Tiziana Sanfilippo
- Ambulatorio di Nutrizione Clinica ASP Palermo, Via G. Cusmano 24, 90141 Palermo, Italy
- Anestesia e Rianimazione, Presidio Ospedaliero “S. Cimino”, 90141 Termini Imerese, Italy
| | - Sonya Vasto
- Dipartmento of Scienze Biologiche, Chimiche, Farmaceutiche e Tecnologiche (STEBICEF), University of Palermo, 90128 Palermo, Italy
- Istituti Euro-Mediterranei di Scienza e Tecnologia (IEMEST), Via M. Miraglia 20, 90139 Palermo, Italy
| | - Sara Baldassano
- Dipartmento of Scienze Biologiche, Chimiche, Farmaceutiche e Tecnologiche (STEBICEF), University of Palermo, 90128 Palermo, Italy
| | - Rossella Guggino
- Ambulatorio di Nutrizione Clinica ASP Palermo, Via G. Cusmano 24, 90141 Palermo, Italy
- Anestesia e Rianimazione, Presidio Ospedaliero “S. Cimino”, 90141 Termini Imerese, Italy
| | - Domenico Nuzzo
- Istituto per la Ricerca e l’Innovazione Biomedica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
- Dipartmento of Scienze Biologiche, Chimiche, Farmaceutiche e Tecnologiche (STEBICEF), University of Palermo, 90128 Palermo, Italy
- Correspondence: (D.N.); (D.G.)
| | - Donatella Bulone
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
| | - Pier Luigi San Biagio
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
| | - Emanuela Muscolino
- Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze, Bldg 6, 90128 Palermo, Italy
| | - Roberto Monastero
- Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università degli Studi di Palermo, Via del Vespro 129, 90127 Palermo, Italy
| | - Clelia Dispenza
- Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze, Bldg 6, 90128 Palermo, Italy
| | - Daniela Giacomazza
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
- Correspondence: (D.N.); (D.G.)
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6
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Kawasaki T, Yamaguchi Y, Kitahara H, Irizawa A, Tani M. Exploring Biomolecular Self-Assembly with Far-Infrared Radiation. Biomolecules 2022; 12:biom12091326. [PMID: 36139165 PMCID: PMC9496551 DOI: 10.3390/biom12091326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/13/2022] [Accepted: 09/17/2022] [Indexed: 11/29/2022] Open
Abstract
Physical engineering technology using far-infrared radiation has been gathering attention in chemical, biological, and material research fields. In particular, the high-power radiation at the terahertz region can give remarkable effects on biological materials distinct from a simple thermal treatment. Self-assembly of biological molecules such as amyloid proteins and cellulose fiber plays various roles in medical and biomaterials fields. A common characteristic of those biomolecular aggregates is a sheet-like fibrous structure that is rigid and insoluble in water, and it is often hard to manipulate the stacking conformation without heating, organic solvents, or chemical reagents. We discovered that those fibrous formats can be conformationally regulated by means of intense far-infrared radiations from a free-electron laser and gyrotron. In this review, we would like to show the latest and the past studies on the effects of far-infrared radiation on the fibrous biomaterials and to suggest the potential use of the far-infrared radiation for regulation of the biomolecular self-assembly.
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Affiliation(s)
- Takayasu Kawasaki
- Accelerator Laboratory, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba 305-0801, Ibaraki, Japan
- Correspondence:
| | - Yuusuke Yamaguchi
- Research Center for Development of Far-Infrared Region, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Fukui, Japan
| | - Hideaki Kitahara
- Research Center for Development of Far-Infrared Region, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Fukui, Japan
| | - Akinori Irizawa
- SR Center, Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, Shiga, Japan
| | - Masahiko Tani
- Research Center for Development of Far-Infrared Region, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Fukui, Japan
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7
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Jindo M, Nakamura K, Okumura H, Tsukiyama K, Kawasaki T. Application study of infrared free-electron lasers towards the development of amyloidosis therapy. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:1133-1140. [PMID: 36073871 PMCID: PMC9455209 DOI: 10.1107/s1600577522007330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 07/15/2022] [Indexed: 05/27/2023]
Abstract
Amyloidosis is known to be caused by the deposition of amyloid fibrils into various biological tissues; effective treatments for the disease are little established today. An infrared free-electron laser (IR-FEL) is an accelerator-based picosecond-pulse laser having tunable infrared wavelengths. In the current study, the irradiation effect of an IR-FEL was tested on an 11-residue peptide (NFLNCYVSGFH) fibril from β2-microglobulin (β2M) with the aim of applying IR-FELs to amyloidosis therapy. Infrared microspectroscopy (IRM) and scanning electron microscopy showed that a fibril of β2M peptide was clearly dissociated by IR-FEL at 6.1 µm (amide I) accompanied by a decrease of the β-sheet and an increase of the α-helix. No dissociative process was recognized at 6.5 µm (amide II) as well as at 5.0 µm (non-specific wavelength). Equilibrium molecular dynamics simulations indicated that the α-helix can exist stably and the probability of forming interchain hydrogen bonds associated with the internal asparagine residue (N4) is notably reduced compared with other amino acids after the β-sheet is dissociated by amide I specific irradiation. This result implies that N4 plays a key role for recombination of hydrogen bonds in the dissociation of the β2M fibril. In addition, the β-sheet was disrupted at temperatures higher than 340 K while the α-helix did not appear even though the fibril was heated up to 363 K as revealed by IRM. The current study gives solid evidence for the laser-mediated conversion from β-sheet to α-helix in amyloid fibrils at the molecular level.
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Affiliation(s)
- Mikiko Jindo
- Department of Chemistry, Faculty of Science Division I, Tokyo University of Science, 1–3 Kagurazaka, Tokyo 184-8501, Japan
| | - Kazuhiro Nakamura
- Department of Laboratory Sciences, Gunma University, Graduate School of Health Sciences, 3-39-22, Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Hisashi Okumura
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan
- Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan
- Department of Structural Molecular Science, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi 444-8787, Japan
| | - Koichi Tsukiyama
- Department of Chemistry, Faculty of Science Division I, Tokyo University of Science, 1–3 Kagurazaka, Tokyo 184-8501, Japan
- IR Free Electron Laser Research Center, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Takayasu Kawasaki
- IR Free Electron Laser Research Center, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Accelerator Laboratory, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
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8
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Sandt C, Partouche D, Arluison V. Direct, Rapid, and Simple Evaluation of the Expression and Conformation of Beta-Amyloid in Bacterial Cells by FTIR Spectroscopy. Methods Mol Biol 2022; 2538:235-260. [PMID: 35951304 DOI: 10.1007/978-1-0716-2529-3_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The expression and conformation of bacterial proteins and peptides can be monitored in situ by Fourier transform infrared spectroscopy (FTIR), provided that the concentration of the protein of interest is sufficient. Here, we describe a simple protocol to analyze the conformation adopted by a specific amyloid protein in Escherichia coli cells, the pleiotropic regulator Hfq.E. coli cells expressing Hfq under an inducible promoter are analyzed. The change in protein conformation is analyzed by comparing the different populations versus controls (i.e., Δhfq cells, totally devoid of the Hfq protein) by difference spectroscopy, second derivation, curve-fitting, and principal component analysis. All the analyses were performed in the free, open-source software Quasar. We describe the detailed protocol for analyzing the data in Quasar. We show that the specific absorption of the β-amyloid conformation can be easily detected in the WT-Hfq, with bands at 1624 cm-1 and 1693 cm-1 indicating the presence of both parallel and antiparallel β-sheets. Furthermore, we show that FTIR spectroscopy is sensitive enough to probe the conformation of an amyloid protein backbone in vivo and to analyze its conformation in situ, directly in bacterial cells, without the need for protein purification.
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Affiliation(s)
- Christophe Sandt
- SMIS beamline, Synchrotron SOLEIL, L'Orme des Merisiers Saint Aubin, Gif-sur-Yvette, France.
| | - David Partouche
- SMIS beamline, Synchrotron SOLEIL, L'Orme des Merisiers Saint Aubin, Gif-sur-Yvette, France
- Laboratoire Léon Brillouin LLB, CEA, CNRS UMR 12, Université Paris Saclay, CEA Saclay, Gif-sur-Yvette, France
| | - Véronique Arluison
- Laboratoire Léon Brillouin LLB, CEA, CNRS UMR 12, Université Paris Saclay, CEA Saclay, Gif-sur-Yvette, France
- Université de Paris Cité, Paris, France
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9
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Vosough F, Barth A. Characterization of Homogeneous and Heterogeneous Amyloid-β42 Oligomer Preparations with Biochemical Methods and Infrared Spectroscopy Reveals a Correlation between Infrared Spectrum and Oligomer Size. ACS Chem Neurosci 2021; 12:473-488. [PMID: 33455165 PMCID: PMC8023574 DOI: 10.1021/acschemneuro.0c00642] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
![]()
Soluble oligomers of the amyloid-β(1-42)
(Aβ42) peptide,
widely considered to be among the relevant neurotoxic species involved
in Alzheimer’s disease, were characterized with a combination
of biochemical and biophysical methods. Homogeneous and stable Aβ42
oligomers were prepared by treating monomeric solutions of the peptide
with detergents. The prepared oligomeric solutions were analyzed with
blue native and sodium dodecyl sulfate polyacrylamide gel electrophoresis,
as well as with infrared (IR) spectroscopy. The IR spectra indicated
a well-defined β-sheet structure of the prepared oligomers.
We also found a relationship between the size/molecular weight of
the Aβ42 oligomers and their IR spectra: The position of the
main amide I′ band of the peptide backbone correlated with
oligomer size, with larger oligomers being associated with lower wavenumbers.
This relationship explained the time-dependent band shift observed
in time-resolved IR studies of Aβ42 aggregation in the absence
of detergents, during which the oligomer size increased. In addition,
the bandwidth of the main IR band in the amide I′ region was
found to become narrower with time in our time-resolved aggregation
experiments, indicating a more homogeneous absorption of the β-sheets
of the oligomers after several hours of aggregation. This is predominantly
due to the consumption of smaller oligomers in the aggregation process.
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Affiliation(s)
- Faraz Vosough
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm SE-106 91, Sweden
| | - Andreas Barth
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm SE-106 91, Sweden
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10
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Baronio CM, Baldassarre M, Barth A. Insight into the internal structure of amyloid-β oligomers by isotope-edited Fourier transform infrared spectroscopy. Phys Chem Chem Phys 2019; 21:8587-8597. [DOI: 10.1039/c9cp00717b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Isotope-edited infrared spectroscopy reveals the structural unit of amyloid-β oligomers.
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Affiliation(s)
| | | | - Andreas Barth
- Department of Biochemistry and Biophysics
- Stockholm University
- Sweden
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11
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Miyoshi N. Biochemical properties of cholesterol aldehyde secosterol and its derivatives. J Clin Biochem Nutr 2018; 62:107-114. [PMID: 29610549 PMCID: PMC5874229 DOI: 10.3164/jcbn.17-109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 12/12/2017] [Indexed: 01/17/2023] Open
Abstract
Elevated levels of cholesterol aldehyde, 3β-hydroxy-5-oxo-5,6-secocholestan-6-al (secosterol-A, also called 5,6-secosterol), and its aldolization product (secosterol-B) have been detected in human atherosclerotic plaques and tissues samples of brains affected by neurodegeneration, such as Alzheimer’s disease and Lewy body dementia suggesting that increased formation of these compounds may be associated with inflammation-related diseases. Secosterol-A and secosterol-B, and also further oxidized products seco-A-COOH and seco-B-COOH induce several pro-inflammatory activities in vitro. Accumulating evidences demonstrate that the covalent bindings of these secosterols to target proteins seem to be critical to trigger their pro-inflammatory activities. One of the molecular mechanisms of protein adduct formations is that aldehydic function of secosterol-A and secosterol-B is reactive and form Schiff bases with ε- or N-terminal amino groups of proteins. In other cases, it is recently suggested that Michael acceptor moiety formed by the dehydration of not only secosterol-A and secosterol-B but also seco-A-COOH may react with nucleophilic site on target proteins. In this review, I summarize and provide an overview of formation mechanism of secosterols in in vitro and in vivo, patho- or physiological concentrations in biological and clinical samples, and molecular mechanisms of pro-inflammatory activities of secosterols.
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Affiliation(s)
- Noriyuki Miyoshi
- Laboratory of Biochemistry, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
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12
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Baldassarre M, Baronio CM, Morozova-Roche LA, Barth A. Amyloid β-peptides 1-40 and 1-42 form oligomers with mixed β-sheets. Chem Sci 2017; 8:8247-8254. [PMID: 29568473 PMCID: PMC5857929 DOI: 10.1039/c7sc01743j] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 10/12/2017] [Indexed: 12/16/2022] Open
Abstract
Two main amyloid-β peptides of different length (Aβ40 and Aβ42) are involved in Alzheimer's disease. Their relative abundance is decisive for the severity of the disease and mixed oligomers may contribute to the toxic species. However, little is know about the extent of mixing. To study whether Aβ40 and Aβ42 co-aggregate, we used Fourier transform infrared spectroscopy in combination with 13C-labeling and spectrum calculation and focused on the amide I vibration, which is sensitive to backbone structure. Mixtures of monomeric labeled Aβ40 and unlabeled Aβ42 (and vice versa) were co-incubated for ∼20 min and their infrared spectrum recorded. The position of the main 13C-amide I' band shifted to higher wavenumbers with increasing admixture of 12C-peptide due to the presence of 12C-amides in the vicinity of 13C-amides. The results indicate that Aβ40 and Aβ42 form mixed oligomers with a largely random distribution of Aβ40 and Aβ42 strands in their β-sheets. The structures of the mixed oligomers are intermediate between those of the pure oligomers. There is no indication that one of the peptides forces the backbone structure of its oligomers on the other peptide when they are mixed as monomers. We also demonstrate that isotope-edited infrared spectroscopy can distinguish aggregation modulators that integrate into the backbone structure of their interaction partner from those that do not. As an example for the latter case, the pro-inflammatory calcium binding protein S100A9 is shown not to incorporate into the β-sheets of Aβ42.
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Affiliation(s)
- Maurizio Baldassarre
- Department of Biochemistry and Biophysics , Stockholm University , Arrhenius Laboratories , 10691 Stockholm , Sweden .
| | - Cesare M Baronio
- Department of Biochemistry and Biophysics , Stockholm University , Arrhenius Laboratories , 10691 Stockholm , Sweden .
| | | | - Andreas Barth
- Department of Biochemistry and Biophysics , Stockholm University , Arrhenius Laboratories , 10691 Stockholm , Sweden .
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13
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Grasso G, Komatsu H, Axelsen P. Covalent modifications of the amyloid beta peptide by hydroxynonenal: Effects on metal ion binding by monomers and insights into the fibril topology. J Inorg Biochem 2017; 174:130-136. [DOI: 10.1016/j.jinorgbio.2017.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 06/15/2017] [Accepted: 06/19/2017] [Indexed: 12/17/2022]
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14
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Lopes J, Correia M, Martins I, Henriques AG, Delgadillo I, da Cruz E Silva O, Nunes A. FTIR and Raman Spectroscopy Applied to Dementia Diagnosis Through Analysis of Biological Fluids. J Alzheimers Dis 2017; 52:801-12. [PMID: 27079713 DOI: 10.3233/jad-151163] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
To date, it is still difficult to perform an early and accurate diagnosis of dementia, therefore significant research has focused on finding new dementia biomarkers that can aid in this respect. There is an urgent need for non-invasive, rapid, and relatively inexpensive procedures for early diagnostics. Studies have demonstrated that of spectroscopic techniques, such as Fourier Transform Infrared Spectroscopy (FTIR) and Raman Spectroscopy could be a useful and accurate procedure to diagnose dementia. Given that several biochemical mechanisms related to neurodegeneration and dementia can lead to changes in plasma components and others peripheral body fluids; blood-based samples coupled to spectroscopic analyses can be used as a simple and less invasive approach.
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Affiliation(s)
- Jéssica Lopes
- iBiMED, Departamento de Ciências Médicas, Universidade de Aveiro, Aveiro, Portugal
| | - Marta Correia
- iBiMED, Departamento de Ciências Médicas, Universidade de Aveiro, Aveiro, Portugal
| | - Ilka Martins
- Grupo de Neurociências e Sinalização, iBiMED, Departamento de Ciências Médicas, Universidade de Aveiro, Aveiro, Portugal
| | - Ana Gabriela Henriques
- Grupo de Neurociências e Sinalização, iBiMED, Departamento de Ciências Médicas, Universidade de Aveiro, Aveiro, Portugal
| | - Ivonne Delgadillo
- QOPNA, Departamento de Química, Universidade de Aveiro, Aveiro, Portugal
| | - Odete da Cruz E Silva
- Grupo de Neurociências e Sinalização, iBiMED, Departamento de Ciências Médicas, Universidade de Aveiro, Aveiro, Portugal
| | - Alexandra Nunes
- iBiMED, Departamento de Ciências Médicas, Universidade de Aveiro, Aveiro, Portugal
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15
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Chiang GC, Mao X, Kang G, Chang E, Pandya S, Vallabhajosula S, Isaacson R, Ravdin LD, Shungu DC. Relationships among Cortical Glutathione Levels, Brain Amyloidosis, and Memory in Healthy Older Adults Investigated In Vivo with 1H-MRS and Pittsburgh Compound-B PET. AJNR Am J Neuroradiol 2017; 38:1130-1137. [PMID: 28341718 PMCID: PMC5471116 DOI: 10.3174/ajnr.a5143] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 01/19/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND PURPOSE Oxidative stress has been implicated as an important pathologic mechanism in the development of Alzheimer disease. The purpose of this study was to assess whether glutathione levels, detected noninvasively with proton MR spectroscopy, are associated with brain amyloidosis and memory in a community-dwelling cohort of healthy older adults. MATERIALS AND METHODS Fifteen cognitively healthy subjects were prospectively enrolled in this study. All subjects underwent 1H-MR spectroscopy of glutathione, a positron-emission tomography scan with an amyloid tracer, and neuropsychological testing by using the Repeatable Battery for the Assessment of Neuropsychological Status. Associations among glutathione levels, brain amyloidosis, and memory were assessed by using multivariate regression models. RESULTS Lower glutathione levels were associated with greater brain amyloidosis in the temporal (P = .03) and parietal (P = .05) regions, adjusted for apolipoprotein E ε4 carrier status. There were no significant associations between glutathione levels and cognitive scores. CONCLUSIONS This study found an association between cortical glutathione levels and brain amyloidosis in healthy older adults, suggesting a potential role for 1H-MR spectroscopy measures of glutathione as a noninvasive biomarker of early Alzheimer disease pathogenesis.
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Affiliation(s)
- G C Chiang
- From the Departments of Radiology (G.C.C., X.M., G.K., E.C., S.P., S.V., D.C.S.)
| | - X Mao
- From the Departments of Radiology (G.C.C., X.M., G.K., E.C., S.P., S.V., D.C.S.)
| | - G Kang
- From the Departments of Radiology (G.C.C., X.M., G.K., E.C., S.P., S.V., D.C.S.)
| | - E Chang
- From the Departments of Radiology (G.C.C., X.M., G.K., E.C., S.P., S.V., D.C.S.)
| | - S Pandya
- From the Departments of Radiology (G.C.C., X.M., G.K., E.C., S.P., S.V., D.C.S.)
| | - S Vallabhajosula
- From the Departments of Radiology (G.C.C., X.M., G.K., E.C., S.P., S.V., D.C.S.)
| | - R Isaacson
- Neurology (R.I., L.D.R.), Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, New York
| | - L D Ravdin
- Neurology (R.I., L.D.R.), Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, New York
| | - D C Shungu
- From the Departments of Radiology (G.C.C., X.M., G.K., E.C., S.P., S.V., D.C.S.)
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16
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Furman R, Murray IVJ, Schall HE, Liu Q, Ghiwot Y, Axelsen PH. Amyloid Plaque-Associated Oxidative Degradation of Uniformly Radiolabeled Arachidonic Acid. ACS Chem Neurosci 2016; 7:367-77. [PMID: 26800372 DOI: 10.1021/acschemneuro.5b00316] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Oxidative stress is a frequently observed feature of Alzheimer's disease, but its pathological significance is not understood. To explore the relationship between oxidative stress and amyloid plaques, uniformly radiolabeled arachidonate was introduced into transgenic mouse models of Alzheimer's disease via intracerebroventricular injection. Uniform labeling with carbon-14 is used here for the first time, and made possible meaningful quantification of arachidonate oxidative degradation products. The injected arachidonate entered a fatty acid pool that was subject to oxidative degradation in both transgenic and wild-type animals. However, the extent of its degradation was markedly greater in the hippocampus of transgenic animals where amyloid plaques were abundant. In human Alzheimer's brain, plaque-associated proteins were post-translationally modified by hydroxynonenal, a well-known oxidative degradation product of arachidonate. These results suggest that several recurring themes in Alzheimer's pathogenesis, amyloid β proteins, transition metal ions, oxidative stress, and apolipoprotein isoforms, may be involved in a common mechanism that has the potential to explain both neuronal loss and fibril formation in this disease.
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Affiliation(s)
- Ran Furman
- Department
of Pharmacology, The University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Ian V. J. Murray
- Department of Neuroscience and Experimental Therapeutics, Texas A & M University, College Station, Texas 77807, United States
- Department
of Physiology and Neuroscience, St. George’s University, St. George’s, Grenada
| | - Hayley E. Schall
- Department of Neuroscience and Experimental Therapeutics, Texas A & M University, College Station, Texas 77807, United States
| | - Qiwei Liu
- Department
of Pharmacology, The University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yonatan Ghiwot
- Department of Neuroscience and Experimental Therapeutics, Texas A & M University, College Station, Texas 77807, United States
| | - Paul H. Axelsen
- Department
of Pharmacology, The University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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17
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Miyoshi N. Chemical alterations and regulations of biomolecules in lifestyle-related diseases. Biosci Biotechnol Biochem 2016; 80:1046-53. [PMID: 26856708 DOI: 10.1080/09168451.2016.1141037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We know experientially that not only nutrient factors but also non-nutritive functional food factors are playing important roles in maintenance of homeostasis, health promotion, and disease prevention. Although some of these effective behaviors are supported by accumulating scientific evidences, it is in general difficult to determine properly in human. Therefore, the discovering of novel biomarker and developments of the analytical method are one of the prudent strategies to understand disease etiology and evaluate efficacies of functional food factors via monitoring the pathophysiological alteration in live body, tissue, and cells. This review describes recent our findings on (1) formation mechanism, bioactivities, quantitative determination of cholesterol ozonolysis product, secosterol as possible biomarker for lifestyle-related disease, and (2) chemical biology approach for the investigating molecular mechanisms of most promising cancer chemopreventive food factors, isothiocyanate-inducing bioactivities.
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Affiliation(s)
- Noriyuki Miyoshi
- a Laboratory of Biochemistry, Graduate School of Integrated Pharmaceutical and Nutritional Sciences , Graduate Program in Food and Nutritional Sciences, University of Shizuoka , Shizuoka , Japan
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18
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Quantitative multimodal multiparametric imaging in Alzheimer's disease. Brain Inform 2016; 3:29-37. [PMID: 27747597 PMCID: PMC4883163 DOI: 10.1007/s40708-015-0028-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 12/07/2015] [Indexed: 12/18/2022] Open
Abstract
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder, causing changes in memory, thinking, and other dysfunction of brain functions. More and more people are suffering from the disease. Early neuroimaging techniques of AD are needed to develop. This review provides a preliminary summary of the various neuroimaging techniques that have been explored for in vivo imaging of AD. Recent advances in magnetic resonance (MR) techniques, such as functional MR imaging (fMRI) and diffusion MRI, give opportunities to display not only anatomy and atrophy of the medial temporal lobe, but also at microstructural alterations or perfusion disturbance within the AD lesions. Positron emission tomography (PET) imaging has become the subject of intense research for the diagnosis and facilitation of drug development of AD in both animal models and human trials due to its non-invasive and translational characteristic. Fluorodeoxyglucose (FDG) PET and amyloid PET are applied in clinics and research departments. Amyloid beta (Aβ) imaging using PET has been recognized as one of the most important methods for the early diagnosis of AD, and numerous candidate compounds have been tested for Aβ imaging. Besides in vivo imaging method, a lot of ex vivo modalities are being used in the AD researches. Multiphoton laser scanning microscopy, neuroimaging of metals, and several metal bioimaging methods are also mentioned here. More and more multimodality and multiparametric neuroimaging techniques should improve our understanding of brain function and open new insights into the pathophysiology of AD. We expect exciting results will emerge from new neuroimaging applications that will provide scientific and medical benefits.
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19
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Kinnunen PKJ, Domanov YA, Mattila JP, Varis T. Formation of lipid/peptide tubules by IAPP and temporin B on supported lipid membranes. SOFT MATTER 2015; 11:9188-9200. [PMID: 26575388 DOI: 10.1039/b925228b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The conversion of various and to is accelerated by , which are also postulated to represent targets mediating the cytotoxicity of protofibrils. Yet, our understanding of the molecular details governing -catalyzed fibrillogenesis of precursors remains limited. To obtain insight into the intricate interplay of and biophysics we have recently introduced supported bilayers (SLBs) with fluorescent analogs as model biomembranes, observed by time-lapse . Here we demonstrate that human islet () induces within minutes of its application on bilayers the expulsion of numerous flexible tubules from the . Intriguingly, these flexible tubules gradually evolve into a network of straight tubes locally attached to the substrate. Two-color imaging of the and the fluorescently labeled revealed to be distributed along the . Similar linear tubules were observed with the antimicrobial temporin B and the non-amyloidogenic rat , revealing that the above mesoscopic perturbations are not related to formation by the human . Micromanipulation experiments revealed that the linearity of the tubules was caused by tension, stretching the tubules between their points of attachment to the substrate. After longer incubation times, for SLBs containing the oxidatively modified 1-palmitoyl-2-azelaoyl-sn-glycero-3-phosphocholine (, bearing a terminal carboxyl at the end of the chain) and human (but not the other ) some of the straight transformed into highly regular helices. This is likely to reflect tension originating from an efficient aggregation of the into parallelly aligned bundles, associated with tubes containing the oxidized , possibly together with a concomitant flow of along the tubules to the immobile aggregates attaching the tubules to the substrate, these two processes cause, upon shortening of the linear scaffold, the attached excess tubule to adopt a helical morphology, coiling around the core. The above studies are in line with the multiphasic kinetics of fibrillation in the presence of oxidized containing liposomes, assessed by fluorescence enhancement. In addition to demonstrating the feasibility of SLBs as biomimetic model system for studying -assisted fibrillation, our results accentuate the role of chemical composition in modulation of different stages of this process and the associated transformation of architecture. Accordingly, changes in the chemical nature of cellular arising from pathophysiological processes such as oxidative stress may participate in the triggering amyloidogenesis as well as amplification of its detrimental effects in vivo.
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Affiliation(s)
- Paavo K J Kinnunen
- Helsinki Biophysics & Biomembrane Group, Medical Biochemistry/Institute of Biomedicine, University of Helsinki, P.O. Box 63 (Haartmaninkatu 8), FIN-00014, Finland.
| | - Yegor A Domanov
- Helsinki Biophysics & Biomembrane Group, Medical Biochemistry/Institute of Biomedicine, University of Helsinki, P.O. Box 63 (Haartmaninkatu 8), FIN-00014, Finland.
| | - Juha-Pekka Mattila
- Helsinki Biophysics & Biomembrane Group, Medical Biochemistry/Institute of Biomedicine, University of Helsinki, P.O. Box 63 (Haartmaninkatu 8), FIN-00014, Finland.
| | - Teemu Varis
- Helsinki Biophysics & Biomembrane Group, Medical Biochemistry/Institute of Biomedicine, University of Helsinki, P.O. Box 63 (Haartmaninkatu 8), FIN-00014, Finland.
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20
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Braidy N, Poljak A, Marjo C, Rutlidge H, Rich A, Jayasena T, Inestrosa NC, Sachdev P. Metal and complementary molecular bioimaging in Alzheimer's disease. Front Aging Neurosci 2014; 6:138. [PMID: 25076902 PMCID: PMC4098123 DOI: 10.3389/fnagi.2014.00138] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 06/09/2014] [Indexed: 12/30/2022] Open
Abstract
Alzheimer's disease (AD) is the leading cause of dementia in the elderly, affecting over 27 million people worldwide. AD represents a complex neurological disorder which is best understood as the consequence of a number of interconnected genetic and lifestyle variables, which culminate in multiple changes to brain structure and function. These can be observed on a gross anatomical level in brain atrophy, microscopically in extracellular amyloid plaque and neurofibrillary tangle formation, and at a functional level as alterations of metabolic activity. At a molecular level, metal dyshomeostasis is frequently observed in AD due to anomalous binding of metals such as Iron (Fe), Copper (Cu), and Zinc (Zn), or impaired regulation of redox-active metals which can induce the formation of cytotoxic reactive oxygen species and neuronal damage. Metal chelators have been administered therapeutically in transgenic mice models for AD and in clinical human AD studies, with positive outcomes. As a result, neuroimaging of metals in a variety of intact brain cells and tissues is emerging as an important tool for increasing our understanding of the role of metal dysregulation in AD. Several imaging techniques have been used to study the cerebral metallo-architecture in biological specimens to obtain spatially resolved data on chemical elements present in a sample. Hyperspectral techniques, such as particle-induced X-ray emission (PIXE), energy dispersive X-ray spectroscopy (EDS), X-ray fluorescence microscopy (XFM), synchrotron X-ray fluorescence (SXRF), secondary ion mass spectrometry (SIMS), and laser ablation inductively coupled mass spectrometry (LA-ICPMS) can reveal relative intensities and even semi-quantitative concentrations of a large set of elements with differing spatial resolution and detection sensitivities. Other mass spectrometric and spectroscopy imaging techniques such as laser ablation electrospray ionization mass spectrometry (LA ESI-MS), MALDI imaging mass spectrometry (MALDI-IMS), and Fourier transform infrared spectroscopy (FTIR) can be used to correlate changes in elemental distribution with the underlying pathology in AD brain specimens. Taken together, these techniques provide new techniques to probe the pathobiology of AD and pave the way for identifying new therapeutic targets. The current review aims to discuss the advantages and challenges of using these emerging elemental and molecular imaging techniques, and highlight clinical achievements in AD research using bioimaging techniques.
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Affiliation(s)
- Nady Braidy
- Faculty of Medicine, Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Sydney, NSW, Australia
| | - Anne Poljak
- Faculty of Medicine, Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Sydney, NSW, Australia ; Bioanalytical Mass Spectrometry Facility, Mark Wainwright Analytical Centre, University of New South Wales Sydney, NSW, Australia ; Faculty of Medicine, School of Medical Sciences, University of New South Wales Sydney, NSW, Australia
| | - Christopher Marjo
- Solid State and Elemental Analysis Unit, Mark Wainwright Analytical Centre, University of New South Wales Sydney, NSW, Australia
| | - Helen Rutlidge
- Solid State and Elemental Analysis Unit, Mark Wainwright Analytical Centre, University of New South Wales Sydney, NSW, Australia
| | - Anne Rich
- Solid State and Elemental Analysis Unit, Mark Wainwright Analytical Centre, University of New South Wales Sydney, NSW, Australia
| | - Tharusha Jayasena
- Faculty of Medicine, Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Sydney, NSW, Australia
| | - Nibaldo C Inestrosa
- Faculty of Biological Sciences, Centre for Ageing and Regeneration, P. Catholic University of Chile Santiago, Chile
| | - Perminder Sachdev
- Faculty of Medicine, Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Sydney, NSW, Australia ; Euroa Centre, Neuropsychiatric Institute, Prince of Wales Hospital Sydney, NSW, Australia
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21
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Miyoshi N, Iuliano L, Tomono S, Ohshima H. Implications of cholesterol autoxidation products in the pathogenesis of inflammatory diseases. Biochem Biophys Res Commun 2014; 446:702-8. [DOI: 10.1016/j.bbrc.2013.12.107] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 12/20/2013] [Indexed: 12/12/2022]
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22
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Miller LM, Bourassa MW, Smith RJ. FTIR spectroscopic imaging of protein aggregation in living cells. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:2339-46. [PMID: 23357359 DOI: 10.1016/j.bbamem.2013.01.014] [Citation(s) in RCA: 191] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 01/16/2013] [Indexed: 01/22/2023]
Abstract
Protein misfolding and aggregation are the hallmark of a number of diseases including Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, and the prion diseases. In all cases, a naturally-occurring protein misfolds and forms aggregates that are thought to disrupt cell function through a wide range of mechanisms that are yet to be fully unraveled. Fourier transform infrared (FTIR) spectroscopy is a technique that is sensitive to the secondary structure of proteins and has been widely used to investigate the process of misfolding and aggregate formation. This review focuses on how FTIR spectroscopy and spectroscopic microscopy are being used to evaluate the structural changes in disease-related proteins both in vitro and directly within cells and tissues. Finally, ongoing technological advances will be presented that are enabling time-resolved FTIR imaging of protein aggregation directly within living cells, which can provide insight into the structural intermediates, time scale, and mechanisms of cell toxicity associated with aggregate formation. This article is part of a Special Issue entitled: FTIR in membrane proteins and peptide studies.
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Affiliation(s)
- Lisa M Miller
- Photon Sciences Directorate, Brookhaven National Laboratory, Upton, NY 11973, USA.
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23
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Axelsen PH, Komatsu H, Murray IVJ. Oxidative stress and cell membranes in the pathogenesis of Alzheimer's disease. Physiology (Bethesda) 2011; 26:54-69. [PMID: 21357903 DOI: 10.1152/physiol.00024.2010] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Amyloid β proteins and oxidative stress are believed to have central roles in the development of Alzheimer's disease. Lipid membranes are among the most vulnerable cellular components to oxidative stress, and membranes in susceptible regions of the brain are compositionally distinct from those in other tissues. This review considers the evidence that membranes are either a source of neurotoxic lipid oxidation products or the target of pathogenic processes involving amyloid β proteins that cause permeability changes or ion channel formation. Progress toward a comprehensive theory of Alzheimer's disease pathogenesis is discussed in which lipid membranes assume both roles and promote the conversion of monomeric amyloid β proteins into fibrils, the pathognomonic histopathological lesion of the disease.
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Affiliation(s)
- Paul H Axelsen
- Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA
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24
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Mahalka AK, Maury CPJ, Kinnunen PKJ. 1-Palmitoyl-2-(9′-oxononanoyl)-sn-glycero-3-phosphocholine, an Oxidized Phospholipid, Accelerates Finnish Type Familial Gelsolin Amyloidosis in Vitro. Biochemistry 2011; 50:4877-89. [DOI: 10.1021/bi200195s] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ajay K. Mahalka
- Helsinki Biophysics and Biomembrane Group, Department of Biomedical Engineering and Computational Science, Aalto University, Espoo, Finland
| | | | - Paavo K. J. Kinnunen
- Helsinki Biophysics and Biomembrane Group, Department of Biomedical Engineering and Computational Science, Aalto University, Espoo, Finland
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25
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Dorosz J, Volinsky R, Bazar E, Kolusheva S, Jelinek R. Phospholipid-induced fibrillation of a prion amyloidogenic determinant at the air/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:12501-12506. [PMID: 19588938 DOI: 10.1021/la901750v] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The peptide fragment 106-126 of prion protein [PrP(106-126)] is a prominent amyloidogenic determinant. We present analysis of PrP(106-126) fibrillation at the air/water interface and, in particular, the relationship between the fibrillation process and interactions of the peptide with phospholipid monolayers. We find that lipid monolayers deposited at the air/water interface induce rapid formation of remarkably highly ordered fibrils by PrP(106-126), and that the extent of fibrillation and fiber organization were dependent upon the presence of negatively charged and unsaturated phospholipids in the monolayers. We also observe that fibrillation was enhanced when PrP(106-126) was injected underneath preassembled phospholipid monolayers, compared to deposition and subsequent compression of mixed monolayers of the peptide and phospholipids. In a broader context, this study demonstrates that Langmuir systems constitute a useful platform for studying lipid interactions of amyloidogenic peptides and lipid-induced fibrillation phenomena.
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Affiliation(s)
- Jerzy Dorosz
- Department of Chemistry and Ilse Katz Institute of Nanotechnology, Ben Gurion University, Beer Sheva 84105, Israel
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26
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Site-specific modification of Alzheimer's peptides by cholesterol oxidation products enhances aggregation energetics and neurotoxicity. Proc Natl Acad Sci U S A 2009; 106:18563-8. [PMID: 19841277 DOI: 10.1073/pnas.0804758106] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Accumulation of amyloid beta-peptide (Abeta) and tau aggregates, possibly linked to age-associated deficiencies in protein homeostasis, appear to cause Alzheimer's disease. Schiff-base formation between Abeta and the aldehyde-bearing cholesterol oxidation product 3-beta-hydroxy-5-oxo-5,6-secocholestan-6-al is known to increase Abeta amyloidogenicity. Here, we synthesized Abeta variants site-specifically modified with the cholesterol aldehyde at Asp-1, Lys-16, or Lys-28, rather than studying mixtures. These distinct modifications have a similar effect on the thermodynamic propensity for aggregation, enabling aggregation at low concentrations. In contrast, the modification site differentially influences the aggregation kinetics; Lys-16-modified Abeta formed amorphous aggregates fastest and at the lowest concentration (within 2 h at a concentration of 20 nM), followed by the Lys-28 and Asp-1 conjugates. Also, the aggregates resulting from Abeta Lys-16 cholesterol aldehyde conjugation were more toxic to primary rat cortical neurons than treatment with unmodified Abeta under identical conditions and at the same concentration. Our results show that Abeta modification by cholesterol derivatives, especially at Lys-16, renders it kinetically and thermodynamically competent to form neurotoxic aggregates at concentrations approaching the physiologic concentration of Abeta.
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27
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Qi W, Zhang A, Good TA, Fernandez EJ. Two disaccharides and trimethylamine N-oxide affect Abeta aggregation differently, but all attenuate oligomer-induced membrane permeability. Biochemistry 2009; 48:8908-19. [PMID: 19637920 DOI: 10.1021/bi9006397] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Interaction between aggregates of amyloid beta protein (Abeta) and membranes has been hypothesized by many to be a key event in the mechanism of neurotoxicity associated with Alzheimer's disease (AD). Proposed membrane-related mechanisms of neurotoxicity include ion channel formation, membrane disruption, changes in membrane capacitance, and lipid membrane oxidation. Recently, osmolytes such as trehalose have been found to delay Abeta aggregation in vitro and reduce neurotoxicity. However, no direct measurements have separated the effects of osmolytes on Abeta aggregation versus membrane interactions. In this article, we tested the influence of trehalose, sucrose and trimethylamine-N-oxide (TMAO) on Abeta aggregation and fluorescent dye leakage induced by Abeta aggregates from liposomes. In the absence of lipid vesicles, trehalose and sucrose, but not TMAO, were found to delay Abeta aggregation. In contrast, all of the osmolytes significantly attenuated dye leakage. Dissolution of preformed Abeta aggregates was excluded as a possible mechanism of dye leakage attenuation by measurements of Congo red binding as well as hydrogen-deuterium exchange detected by mass spectrometry (HX-MS). However, the accelerated conversion of high order oligomers to fibril caused by vesicles did not take place if any of the three osmolytes presented. Instead, in the case of disaccharide, osmolytes were found to form adducts with Abeta, and change the dissociation dynamics of soluble oligomeric species. Both effects may have contributed to the observed osmolyte attenuation of dye leakage. These results suggest that disaccharides and TMAO may have very different effects on Abeta aggregation because of the different tendencies of the osmolytes to interact with the peptide backbone. However, the effects on Abeta membrane interaction may be due to much more general phenomena associated with osmolyte enhancement of Abeta oligomer stability and/or direct interaction of osmolyte with the membrane surface.
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Affiliation(s)
- Wei Qi
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904, USA
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28
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Axelsen PH, Murphy RC. Quantitative analysis of phospholipids containing arachidonate and docosahexaenoate chains in microdissected regions of mouse brain. J Lipid Res 2009; 51:660-71. [PMID: 19767534 DOI: 10.1194/jlr.d001750] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Phospholipids containing polyunsaturated fatty acyl chains are prevalent among brain lipids, and regional differences in acyl chain distribution appear to have both functional and pathological significance. A method is described in which the combined application of GC and multiple reaction monitoring (MRM) MS yielded precise relative quantitation and approximate absolute quantitation of lipid species containing a particular fatty acyl chain in milligram-sized tissue samples. The method uses targeted MRM to identify specific molecular species of glycerophosphocholine lipids, glycerophospho-ethanolamine lipids, glycerophosphoinositol lipids, glycerophosphoserine lipids, glycero-phosphoglycerol lipids, and phosphatidic acids that contain esterified arachidonate (AA) and docosahexaenoate (DHA) separated during normal phase LC/MS/MS analysis. Quantitative analysis of the AA and DHA in the LC fractions is carried out using negative ion chemical ionization GC/MS and stable isotope dilution strategies. The method has been applied to assess the glycerophospholipid molecular species containing AA and DHA in microdissected samples of murine cerebral cortex and hippocampus. Results demonstrate the potential of this approach to identify regional differences in phospholipid concentration and reveal differences in specific phospholipid species between cortex and hippocampus. These differences may be related to the differential susceptibility of different brain regions to neurodegenerative disorders.
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Affiliation(s)
- Paul H Axelsen
- Department of Pharmacology, Biochemistry and Biophysics, University of Pennsylvania School of Medicine, Philadelphia, PA 19104-6084, USA.
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Membrane interactions of a self-assembling model peptide that mimics the self-association, structure and toxicity of Abeta(1-40). BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2009; 1788:1714-21. [PMID: 19393615 DOI: 10.1016/j.bbamem.2009.04.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2008] [Revised: 03/20/2009] [Accepted: 04/15/2009] [Indexed: 11/22/2022]
Abstract
Beta-amyloid peptide (Abeta) is a primary protein component of senile plaques in Alzheimer's disease (AD) and plays an important, but not fully understood role in neurotoxicity. Model peptides with the demonstrated ability to mimic the structural and toxicity behavior of Abeta could provide a means to evaluate the contributions to toxicity that are common to self-associating peptides from many disease states. In this work, we have studied the peptide-membrane interactions of a model beta-sheet peptide, P(11-2) (CH(3)CO-Gln-Gln-Arg-Phe-Gln-Trp-Gln-Phe-Glu-Gln-Gln-NH(2)), by fluorescence, infrared spectroscopy, and hydrogen-deuterium exchange. Like Abeta(1-40), the peptide is toxic, and conditions which produce intermediate oligomers show higher toxicity against cells than either monomeric forms or higher aggregates of the peptide. Further, P(11-2) also binds to both zwitterionic (POPC) and negatively charged (POPC:POPG) liposomes, acquires a partial beta-sheet conformation in presence of lipid, and is protected against deuterium exchange in the presence of lipids. The results show that a simple rationally designed model beta-sheet peptide recapitulates many important features of Abeta peptide structure and function, reinforcing the idea that toxicity arises, at least in part, from a common mode of action on membranes that is independent of specific aspects of the amino acid sequence. Further studies of such well-behaved model peptide systems will facilitate the investigation of the general principles that govern the molecular interactions of aggregation-prone disease-associated peptides with cell and/or membrane surfaces.
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Relini A, Cavalleri O, Rolandi R, Gliozzi A. The two-fold aspect of the interplay of amyloidogenic proteins with lipid membranes. Chem Phys Lipids 2009; 158:1-9. [DOI: 10.1016/j.chemphyslip.2008.11.003] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2008] [Revised: 10/10/2008] [Accepted: 11/06/2008] [Indexed: 12/11/2022]
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Bürck J, Roth S, Wadhwani P, Afonin S, Kanithasen N, Strandberg E, Ulrich AS. Conformation and membrane orientation of amphiphilic helical peptides by oriented circular dichroism. Biophys J 2008; 95:3872-81. [PMID: 18621832 PMCID: PMC2553147 DOI: 10.1529/biophysj.108.136085] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2008] [Accepted: 07/03/2008] [Indexed: 11/18/2022] Open
Abstract
Oriented circular dichroism (OCD) was used to characterize and compare in a quantitative manner the secondary structure and concentration dependent realignment of the antimicrobial peptides PGLa and MSI-103, and of the structurally related cell-penetrating peptide MAP in aligned phospholipid bilayers. All these peptides adopt an amphiphilic alpha-helical conformation, and from solid-state NMR analysis they are known to bind to membranes in two distinct orientations depending on their concentration. At low peptide/lipid (P/L) ratio the helices are aligned parallel to membrane surface (S-state), but with increasing concentration they realign to a tilted orientation (T-state), getting immersed into the membrane with an oblique angle supposedly as a result of dimer-formation. In macroscopically aligned liquid crystalline 1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine bilayers the two limiting states are represented by distinct OCD spectra, and all spectra at intermediate peptide concentrations can be described by a linear combination of these two line shapes. The corresponding fraction of molecules occupying the T-state was determined by fitting the intermediate spectra with a superposition of the two extreme line shapes. By plotting this fraction versus 1/(P/L), the threshold P/L* ratio for realignment was extracted for each of the three related peptides. Despite their structural similarity distinctly different thresholds were obtained, namely for MSI-103 realignment starts already at a low P/L of approximately 1:236, for a MAP derivative (using a nonaggregating analog containing a D-amino acid) the transition begins at P/L approximately 1:156, whereas PGLa needs the highest concentration to flip into T-state at P/L approximately 1:85. Analysis of the original MAP sequence (containing only L-amino acids) gave OCD spectra compatible with beta-pleated conformation, suggesting that this peptide starts to aggregate with increasing concentration, unlike the other helical peptides. All these changes in peptide conformation and membrane alignment observed here by OCD seem to be functionally relevant, as they can be correlated with the membrane perturbing activities of the three antimicrobial and cell-penetrating sequences.
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Affiliation(s)
- Jochen Bürck
- Karlsruhe Institute of Technology, Institute for Biological Interfaces (IBG-2), Karlsruhe, Germany
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