1
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Suh JM, Kim M, Yoo J, Han J, Paulina C, Lim MH. Intercommunication between metal ions and amyloidogenic peptides or proteins in protein misfolding disorders. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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2
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Yi Y, Lim MH. Current understanding of metal-dependent amyloid-β aggregation and toxicity. RSC Chem Biol 2023; 4:121-131. [PMID: 36794021 PMCID: PMC9906324 DOI: 10.1039/d2cb00208f] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/22/2022] [Indexed: 11/23/2022] Open
Abstract
The discovery of effective therapeutics targeting amyloid-β (Aβ) aggregates for Alzheimer's disease (AD) has been very challenging, which suggests its complicated etiology associated with multiple pathogenic elements. In AD-affected brains, highly concentrated metals, such as copper and zinc, are found in senile plaques mainly composed of Aβ aggregates. These metal ions are coordinated to Aβ and affect its aggregation and toxicity profiles. In this review, we illustrate the current view on molecular insights into the assembly of Aβ peptides in the absence and presence of metal ions as well as the effect of metal ions on their toxicity.
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Affiliation(s)
- Yelim Yi
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
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3
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Abelein A, Ciofi-Baffoni S, Mörman C, Kumar R, Giachetti A, Piccioli M, Biverstål H. Molecular Structure of Cu(II)-Bound Amyloid-β Monomer Implicated in Inhibition of Peptide Self-Assembly in Alzheimer's Disease. JACS AU 2022; 2:2571-2584. [PMID: 36465548 PMCID: PMC9709942 DOI: 10.1021/jacsau.2c00438] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/06/2022] [Accepted: 10/07/2022] [Indexed: 05/22/2023]
Abstract
Metal ions, such as copper and zinc ions, have been shown to strongly modulate the self-assembly of the amyloid-β (Aβ) peptide into insoluble fibrils, and elevated concentrations of metal ions have been found in amyloid plaques of Alzheimer's patients. Among the physiological transition metal ions, Cu(II) ions play an outstanding role since they can trigger production of neurotoxic reactive oxygen species. In contrast, structural insights into Cu(II) coordination of Aβ have been challenging due to the paramagnetic nature of Cu(II). Here, we employed specifically tailored paramagnetic NMR experiments to determine NMR structures of Cu(II) bound to monomeric Aβ. We found that monomeric Aβ binds Cu(II) in the N-terminus and combined with molecular dynamics simulations, we could identify two prevalent coordination modes of Cu(II). For these, we report here the NMR structures of the Cu(II)-bound Aβ complex, exhibiting heavy backbone RMSD values of 1.9 and 2.1 Å, respectively. Further, applying aggregation kinetics assays, we identified the specific effect of Cu(II) binding on the Aβ nucleation process. Our results show that Cu(II) efficiently retards Aβ fibrillization by predominately reducing the rate of fibril-end elongation at substoichiometric ratios. A detailed kinetic analysis suggests that this specific effect results in enhanced Aβ oligomer generation promoted by Cu(II). These results can quantitatively be understood by Cu(II) interaction with the Aβ monomer, forming an aggregation inert complex. In fact, this mechanism is strikingly similar to other transition metal ions, suggesting a common mechanism of action of retarding Aβ self-assembly, where the metal ion binding to monomeric Aβ is a key determinant.
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Affiliation(s)
- Axel Abelein
- Department
of Biosciences and Nutrition, Karolinska
Institutet, Huddinge141 83, Sweden
| | - Simone Ciofi-Baffoni
- Magnetic
Resonance Center and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, Sesto Fiorentino50019 , Florence, Italy
| | - Cecilia Mörman
- Department
of Biosciences and Nutrition, Karolinska
Institutet, Huddinge141 83, Sweden
- Department
of Biochemistry and Biophysics, The Arrhenius Laboratories, Stockholm University, Stockholm106 91, Sweden
| | - Rakesh Kumar
- Department
of Biosciences and Nutrition, Karolinska
Institutet, Huddinge141 83, Sweden
| | - Andrea Giachetti
- Magnetic
Resonance Center and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, Sesto Fiorentino50019 , Florence, Italy
| | - Mario Piccioli
- Magnetic
Resonance Center and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, Sesto Fiorentino50019 , Florence, Italy
| | - Henrik Biverstål
- Department
of Biosciences and Nutrition, Karolinska
Institutet, Huddinge141 83, Sweden
- Department
of Physical Organic Chemistry, Latvian Institute
of Organic Synthesis, RigaLV-1006, Latvia
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4
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Beuning CN, Zocchi LJ, Malikidogo KP, Esmieu C, Dorlet P, Crans DC, Hureau C. Measurement of Interpeptidic Cu II Exchange Rate Constants of Cu II-Amyloid-β Complexes to Small Peptide Motifs by Tryptophan Fluorescence Quenching. Inorg Chem 2021; 60:7650-7659. [PMID: 33983723 DOI: 10.1021/acs.inorgchem.0c03555] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The interpeptidic CuII exchange rate constants were measured for two Cu amyloid-β complexes, Cu(Aβ1-16) and Cu(Aβ1-28), to fluorescent peptides GHW and DAHW using a quantitative tryptophan fluorescence quenching methodology. The second-order rate constants were determined at three pH values (6.8, 7.4, and 8.7) important to the two Cu(Aβ) coordination complexes, components Cu(Aβ)I and Cu(Aβ)II. The interpeptidic CuII exchange rate constant is approximately 104 M-1 s-1 but varies in magnitude depending on many variables. These include pH, length of the Aβ peptide, location of the anchoring histidine ligand in the fluorescent peptide, number of amide deprotonations required in the tryptophan peptide to coordinate CuII, and interconversion between Cu(Aβ)I and Cu(Aβ)II. We also present EPR data probing the CuII exchange between peptides and the formation of ternary species between Cu(Aβ) and GHW. As the nonfluorescent GHK and DAHK peptides are important motifs found in the blood and serum, their ability to sequester CuII ions from Cu(Aβ) complexes may be relevant for the metal homeostasis and its implication in Alzheimer's disease. Thus, their kinetic CuII interpeptidic exchange rate constants are important chemical rate constants that can help elucidate the complex CuII trafficking puzzle in the synaptic cleft.
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Affiliation(s)
- Cheryle N Beuning
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Luca J Zocchi
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | | | | | - Pierre Dorlet
- CNRS, Aix-Marseille Université, Laboratoire de Bioénergétique et Ingénierie des Protéines, IMM, 13400 Marseille, France
| | - Debbie C Crans
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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5
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Wang J, Wang C, Ge Y, Sun Y, Wang D, Xu H. Self‐assembly
of hairpin peptides mediated by Cu(
II
) ion: Effect of amino acid sequence. Pept Sci (Hoboken) 2020. [DOI: 10.1002/pep2.24208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiqian Wang
- State Key Laboratory of Heavy Oil Processing, Centre for Bioengineering and Biotechnology China University of Petroleum (East China) Qingdao China
| | - Chengdong Wang
- Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao China
| | - Yanqing Ge
- State Key Laboratory of Heavy Oil Processing, Centre for Bioengineering and Biotechnology China University of Petroleum (East China) Qingdao China
| | - Yawei Sun
- State Key Laboratory of Heavy Oil Processing, Centre for Bioengineering and Biotechnology China University of Petroleum (East China) Qingdao China
| | - Dong Wang
- State Key Laboratory of Heavy Oil Processing, Centre for Bioengineering and Biotechnology China University of Petroleum (East China) Qingdao China
| | - Hai Xu
- State Key Laboratory of Heavy Oil Processing, Centre for Bioengineering and Biotechnology China University of Petroleum (East China) Qingdao China
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6
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Alzheimer's disease-related dysregulation of mRNA translation causes key pathological features with ageing. Transl Psychiatry 2020; 10:192. [PMID: 32546772 PMCID: PMC7297996 DOI: 10.1038/s41398-020-00882-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/04/2020] [Accepted: 05/07/2020] [Indexed: 11/20/2022] Open
Abstract
Alzheimer's disease (AD) is characterised by Aβ and tau pathology as well as synaptic degeneration, which correlates best with cognitive impairment. Previous work suggested that this pathological complexity may result from changes in mRNA translation. Here, we studied whether mRNA translation and its underlying signalling are altered in an early model of AD, and whether modelling this deficiency in mice causes pathological features with ageing. Using an unbiased screen, we show that exposure of primary neurons to nanomolar amounts of Aβ increases FMRP-regulated protein synthesis. This selective regulation of mRNA translation is dependent on a signalling cascade involving MAPK-interacting kinase 1 (Mnk1) and the eukaryotic initiation factor 4E (eIF4E), and ultimately results in reduction of CYFIP2, an FMRP-binding protein. Modelling this CYFIP2 reduction in mice, we find age-dependent Aβ accumulation in the thalamus, development of tau pathology in entorhinal cortex and hippocampus, as well as gliosis and synapse loss in the hippocampus, together with deficits in memory formation. Therefore, we conclude that early stages of AD involve increased translation of specific CYFIP2/FMRP-regulated transcripts. Since reducing endogenous CYFIP2 expression is sufficient to cause key features of AD with ageing in mice, we suggest that prolonged activation of this pathway is a primary step toward AD pathology, highlighting a novel direction for therapeutic targeting.
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7
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North ML, Wilcox DE. Shift from Entropic Cu 2+ Binding to Enthalpic Cu + Binding Determines the Reduction Thermodynamics of Blue Copper Proteins. J Am Chem Soc 2019; 141:14329-14339. [PMID: 31433629 DOI: 10.1021/jacs.9b06836] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The enthalpic and entropic components of Cu2+ and Cu+ binding to the blue copper protein azurin have been quantified with isothermal titration calorimetry (ITC) measurements and analysis, providing the first such experimental values for Cu+ binding to a protein. The high affinity of azurin for Cu2+ is entirely due to a very favorable binding entropy, while its even higher affinity for Cu+ is due to a favorable binding enthalpy and entropy. The binding thermodynamics provide insight into bond enthalpies at the blue copper site and entropic contributions from desolvation and proton displacement. These values were used in thermodynamic cycles to determine the enthalpic and entropic contributions to the free energy of reduction and thus the reduction potential. The reduction thermodynamics obtained with this method are in good agreement with previous results from temperature-dependent electrochemical measurements. The calorimetry method, however, provides new insight into contributions from the initial (oxidized) and final (reduced) states of the reduction. Since ITC measurements quantify the protons that are displaced upon metal binding, the proton transfer that is coupled with electron transfer is also determined with this method. Preliminary results for Cu2+ and Cu+ binding to the Phe114Pro variant of azurin demonstrate the insight about protein tuning of the reduction potential that is provided by the binding thermodynamics of each metal oxidation state.
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Affiliation(s)
- Molly L North
- Department of Chemistry , Dartmouth College , Hanover , New Hampshire 03755 , United States
| | - Dean E Wilcox
- Department of Chemistry , Dartmouth College , Hanover , New Hampshire 03755 , United States
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8
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Srivastava AK, Pittman JM, Zerweck J, Venkata BS, Moore PC, Sachleben JR, Meredith SC. β-Amyloid aggregation and heterogeneous nucleation. Protein Sci 2019; 28:1567-1581. [PMID: 31276610 PMCID: PMC6699094 DOI: 10.1002/pro.3674] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 06/26/2019] [Accepted: 07/03/2019] [Indexed: 01/09/2023]
Abstract
In this article, we consider the role of heterogeneous nucleation in β-amyloid aggregation. Heterogeneous nucleation is more common and occurs at lower levels of supersaturation than homogeneous nucleation. The nucleation period is also the stage at which most of the polymorphism of amyloids arises, this being one of the defining features of amyloids. We focus on several well-known heterogeneous nucleators of β-amyloid, including lipid surfaces, especially those enriched in gangliosides and cholesterol, and divalent metal ions. These two broad classes of nucleators affect β-amyloid particularly in light of the amphiphilicity of these peptides: the N-terminal region, which is largely polar and charged, contains the metal binding site, whereas the C-terminal region is aliphatic and is important in lipid binding. Notably, these two classes of nucleators can interact cooperatively, aggregation begetting greater aggregation.
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Affiliation(s)
- Atul K. Srivastava
- Department of PathologyThe University of ChicagoChicagoIllinois
- Department of Biochemistry and Molecular BiologyThe University of ChicagoChicagoIllinois
| | - Jay M. Pittman
- Department of Biochemistry and Molecular BiologyThe University of ChicagoChicagoIllinois
| | - Jonathan Zerweck
- Department of PathologyThe University of ChicagoChicagoIllinois
- Department of Biochemistry and Molecular BiologyThe University of ChicagoChicagoIllinois
| | - Bharat S. Venkata
- Department of PathologyThe University of ChicagoChicagoIllinois
- Department of Biochemistry and Molecular BiologyThe University of ChicagoChicagoIllinois
| | | | | | - Stephen C. Meredith
- Department of PathologyThe University of ChicagoChicagoIllinois
- Department of Biochemistry and Molecular BiologyThe University of ChicagoChicagoIllinois
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9
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Kelley AR, Bach SB, Perry G. Analysis of post-translational modifications in Alzheimer's disease by mass spectrometry. Biochim Biophys Acta Mol Basis Dis 2019; 1865:2040-2047. [DOI: 10.1016/j.bbadis.2018.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/19/2018] [Accepted: 11/04/2018] [Indexed: 01/09/2023]
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10
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Wang Y, Lai CK, Lau JKC, Hopkinson AC, Siu KWM. Structures and Dissociation Products of Ce/Peptide Complexes: Competition between Coordination and Charge Delocalization. J Phys Chem B 2019; 123:5229-5237. [PMID: 31242740 DOI: 10.1021/acs.jpcb.9b03098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Structures of [Ce(GGG)]3+ and [Ce(GGG ? H)]2+ have been investigated by DFT calculations. The two lowest-energy structures of the triply charged metal complex have the peptide in either the iminol or conventional zwitterionic form, and these ions have almost identical energies. In the doubly charged complex, the iminol and charge-solvated structures are the best structures on the potential energy surface, but the latter is favored. In both iminol structures, the metal ion coordinates to the iminol oxygen rather than to the nitrogen, unlike in previously reported iminol-containing complexes. Triply charged [Ce(peptide)]3+ complexes are fragile and not easily isolated in a mass spectrometer, whereas the doubly charged [Ce(peptide ? H)]2+ complexes are more robust. Here, we studied the fragmentations of 37 [Ce(peptide ? H)]2+ and 30 [Ce(peptide)(peptide ? H)]2+ complexes and the results are systematically summarized. Losses of CO and/or H2O are the most commonly observed fragmentation channels for [Ce(peptide ? H)]2+ complexes and these dissociation pathways are modeled by DFT calculations. For [Ce(peptide)(peptide ? H)]2+ complexes the neutral peptide plays the role of a solvent molecule but, unlike in the dissociations of [Ce(CH3CN)(peptide ? H)]2+ complexes, the loss of the solvent molecule is not observed. Instead, fragmentation occurs by cleavage of the second amide bond of the solvating peptide molecule.
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Affiliation(s)
- Yating Wang
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada
| | - Cheuk-Kuen Lai
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada
| | - Justin Kai-Chi Lau
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada.,Department of Chemistry and Biochemistry , University of Windsor , 401 Sunset Avenue , Windsor , Ontario N9B 3P4 , Canada
| | - Alan C Hopkinson
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada
| | - K W Michael Siu
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada.,Department of Chemistry and Biochemistry , University of Windsor , 401 Sunset Avenue , Windsor , Ontario N9B 3P4 , Canada
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11
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Houghtaling J, List J, Mayer M. Nanopore-Based, Rapid Characterization of Individual Amyloid Particles in Solution: Concepts, Challenges, and Prospects. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802412. [PMID: 30225962 DOI: 10.1002/smll.201802412] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 08/15/2018] [Indexed: 06/08/2023]
Abstract
Aggregates of misfolded proteins are associated with several devastating neurodegenerative diseases. These so-called amyloids are therefore explored as biomarkers for the diagnosis of dementia and other disorders, as well as for monitoring disease progression and assessment of the efficacy of therapeutic interventions. Quantification and characterization of amyloids as biomarkers is particularly demanding because the same amyloid-forming protein can exist in different states of assembly, ranging from nanometer-sized monomers to micrometer-long fibrils that interchange dynamically both in vivo and in samples from body fluids ex vivo. Soluble oligomeric amyloid aggregates, in particular, are associated with neurotoxic effects, and their molecular organization, size, and shape appear to determine their toxicity. This concept article proposes that the emerging field of nanopore-based analytics on a single molecule and single aggregate level holds the potential to account for the heterogeneity of amyloid samples and to characterize these particles-rapidly, label-free, and in aqueous solution-with regard to their size, shape, and abundance. The article describes the concept of nanopore-based resistive pulse sensing, reviews previous work in amyloid analysis, and discusses limitations and challenges that will need to be overcome to realize the full potential of amyloid characterization on a single-particle level.
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Affiliation(s)
- Jared Houghtaling
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Jonathan List
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Michael Mayer
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
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12
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Aliès B, Borghesani V, Noël S, Sayen S, Guillon E, Testemale D, Faller P, Hureau C. Mutations of Histidine 13 to Arginine and Arginine 5 to Glycine Are Responsible for Different Coordination Sites of Zinc(II) to Human and Murine Peptides. Chemistry 2018; 24:14233-14241. [PMID: 29978925 DOI: 10.1002/chem.201802759] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Indexed: 01/21/2023]
Abstract
Because mice and rats do not naturally develop Alzheimer's disease, genetically modified animals are required to study this pathology. This striking difference in terms of disease onset could be due to three alterations in the murine sequence (R5G, Y10F and H13R) of the amyloid-β peptide with respect to the human counterpart. Whether the metal-ion binding properties of the murine peptide are at the origin of such different amyloidogenicity of the two peptides is still an open question. Herein, the main zinc binding site to the murine amyloid-β at physiological pH has been determined through the combination of several spectroscopic and analytical methods applied to a series of six peptides with one or two of the key mutations. These results have been compared with the zinc binding site encountered in the human peptide. A coordination mechanism that demonstrates the importance of the H13R and R5G mutations in the different zinc environments present in the murine and human peptides is proposed. The nature of the minor zinc species present at physiological pH is also suggested for both peptides. Finally, the biological relevance and fallouts of the differences determined in zinc binding to human versus murine amyloid-β are also discussed.
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Affiliation(s)
- Bruno Aliès
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France.,Current address: Université de Bordeaux, ChemBioPharm INSERM U1212 CNRS UMR 5320, 33076, Bordeaux, France
| | | | - Sabrina Noël
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Stephanie Sayen
- Université Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims (ICMR), UMR 7312 CNRS-URCA, Moulin de la Housse, BP 1039, 51687, Reims Cedex 2, France
| | - Emmanuel Guillon
- Université Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims (ICMR), UMR 7312 CNRS-URCA, Moulin de la Housse, BP 1039, 51687, Reims Cedex 2, France
| | - Denis Testemale
- Univ. Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, 38000, Grenoble, France.,BM30B/FAME, ESRF, The European Synchrotron, 71 avenue des Martyrs, 38000, Grenoble, France
| | - Peter Faller
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France.,Current address: Institut de Chimie, UMR 7177 CNRS-Université de Strasbourg, 4 rue Blaise Pascal, Institut Le Bel, 67008, Strasbourg, France
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13
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Atrián-Blasco E, Gonzalez P, Santoro A, Alies B, Faller P, Hureau C. Cu and Zn coordination to amyloid peptides: From fascinating chemistry to debated pathological relevance. Coord Chem Rev 2018; 375:38-55. [PMID: 30262932 DOI: 10.1016/j.ccr.2018.04.007] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Several diseases share misfolding of different peptides and proteins as a key feature for their development. This is the case of important neurodegenerative diseases such as Alzheimer's and Parkinson's diseases and type II diabetes mellitus. Even more, metal ions such as copper and zinc might play an important role upon interaction with amyloidogenic peptides and proteins, which could impact their aggregation and toxicity abilities. In this review, the different coordination modes proposed for copper and zinc with amyloid-β, α-synuclein and IAPP will be reviewed as well as their impact on the aggregation, and ROS production in the case of copper. In addition, a special focus will be given to the mutations that affect metal binding and lead to familial cases of the diseases. Different modifications of the peptides that have been observed in vivo and could be relevant for the coordination of metal ions are also described.
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Affiliation(s)
- Elena Atrián-Blasco
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
| | - Paulina Gonzalez
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - Alice Santoro
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - Bruno Alies
- Université de Bordeaux, ChemBioPharm INSERM U1212 CNRS UMR 5320, Bordeaux, France
| | - Peter Faller
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
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14
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Savelieff MG, Nam G, Kang J, Lee HJ, Lee M, Lim MH. Development of Multifunctional Molecules as Potential Therapeutic Candidates for Alzheimer’s Disease, Parkinson’s Disease, and Amyotrophic Lateral Sclerosis in the Last Decade. Chem Rev 2018; 119:1221-1322. [DOI: 10.1021/acs.chemrev.8b00138] [Citation(s) in RCA: 270] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Masha G. Savelieff
- SciGency Science Communications, Ann Arbor, Michigan 48104, United States
| | - Geewoo Nam
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Juhye Kang
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hyuck Jin Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Misun Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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15
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Lee HJ, Savelieff MG, Kang J, Brophy MB, Nakashige TG, Lee SJC, Nolan EM, Lim MH. Calprotectin influences the aggregation of metal-free and metal-bound amyloid-β by direct interaction. Metallomics 2018; 10:1116-1127. [DOI: 10.1039/c8mt00091c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
CP-Ser [S100A8(C42S)/S100A9(C3S) oligomer] interacts with metal-free and metal-bound Aβ40 peptides and modulates their aggregation in the absence and presence of metal ions.
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Affiliation(s)
- Hyuck Jin Lee
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
| | | | - Juhye Kang
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
- Department of Chemistry
| | | | | | - Shin Jung C. Lee
- Department of Chemistry
- Ulsan National Institute of Science and Technology (UNIST)
- Ulsan 44919
- Republic of Korea
| | - Elizabeth M. Nolan
- Department of Chemistry
- Massachusetts Institute of Technology (MIT)
- Cambridge
- USA
| | - Mi Hee Lim
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
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16
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Cheignon C, Faller P, Testemale D, Hureau C, Collin F. Metal-catalyzed oxidation of Aβ and the resulting reorganization of Cu binding sites promote ROS production. Metallomics 2017; 8:1081-1089. [PMID: 27730227 PMCID: PMC5714184 DOI: 10.1039/c6mt00150e] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the context of Alzheimer’s disease (AD), the production of HO• by copper–amyloid beta (Aβ) in the presence of ascorbate is known to be deleterious for the Aβ peptide itself and also for the surrounding molecules, thus establishing a direct link between AD and oxidative stress. The metal-catalyzed oxidation (MCO) of Aβ primarily targets the residues involved in copper coordination during HO• production. In the present work, we demonstrate that the oxidative damage undergone by Aβ during MCO lead to a change in copper coordination, with enhanced catalytic properties that increases the rates of ascorbate consumption and HO• production, and the amount of HO• released by the system. This phenomenon is observed after the peptide has been sufficiently oxidized.
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Affiliation(s)
- Clémence Cheignon
- LCC (Laboratoire de Chimie de Coordination), CNRS UPR 8241, 205 route de Narbonne, 31062 Toulouse Cedex 09, France. and Université de Toulouse, UPS, INPT, 31077 Toulouse, France and UMR 152 Pharma Dev, Université de Toulouse, IRD, UPS, France
| | - Peter Faller
- LCC (Laboratoire de Chimie de Coordination), CNRS UPR 8241, 205 route de Narbonne, 31062 Toulouse Cedex 09, France. and Université de Toulouse, UPS, INPT, 31077 Toulouse, France
| | - Denis Testemale
- University of Grenoble Alpes, Institut NEEL, F-38000 Grenoble, France and CNRS, Institut NEEL, F-38000 Grenoble, France
| | - Christelle Hureau
- LCC (Laboratoire de Chimie de Coordination), CNRS UPR 8241, 205 route de Narbonne, 31062 Toulouse Cedex 09, France. and Université de Toulouse, UPS, INPT, 31077 Toulouse, France
| | - Fabrice Collin
- LCC (Laboratoire de Chimie de Coordination), CNRS UPR 8241, 205 route de Narbonne, 31062 Toulouse Cedex 09, France. and Université de Toulouse, UPS, INPT, 31077 Toulouse, France and UMR 152 Pharma Dev, Université de Toulouse, IRD, UPS, France
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17
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Tóth EN, May NV, Rockenbauer A, Peintler G, Gyurcsik B. Exploring the boundaries of direct detection and characterization of labile isomers - a case study of copper(ii)-dipeptide systems. Dalton Trans 2017; 46:8157-8166. [PMID: 28607997 DOI: 10.1039/c7dt00884h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The investigation of the linkage isomers of biologically essential and kinetically labile metal complexes in aqueous solutions poses a challenge, as these microspecies cannot be separately studied. Therefore, derivatives are commonly used to initially determine the stability or spectral characteristics of at least one of the isomers. Here we directly detect the isomers, describe the metal ion coordination sphere, speciation and thermodynamic parameters by a synergistic application of temperature dependent EPR and CD spectroscopic measurements in copper(ii)-dipeptide systems including His-Gly and His-Ala ligands. The ΔH = (-23 ± 4) kJ mol-1 value of the standard enthalpy change corresponding to the peptide-type to histamine-type isomerisation equilibrium of the [CuL]+ complex was corroborated by several techniques. The preferential coordination of the side-chains was observed at lower temperatures, whereas, metal-binding of the backbone atoms became favourable upon increasing temperature. This study exemplifies the necessity of using temperature dependent multiple methodologies for a reliable description of similar systems for upstream applications.
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Affiliation(s)
- Eszter N Tóth
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary. and PhD Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Japan
| | - Nóra V May
- Research Centre for Natural Sciences, Hungarian Academy of Sciences, 1117 Budapest, Magyar tudósok körútja 2, Hungary
| | - Antal Rockenbauer
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, 1117 Budapest, Magyar tudósok körútja 2, Hungary and Department of Physics, Budapest University of Technology and Economics and MTA-BME Lendület Spintronics Research Group (PROSPIN), P.O. Box 91, H-1521 Budapest, Hungary
| | - Gábor Peintler
- Department of Physical Chemistry and Material Sciences, University of Szeged, Aradi Vértanuk tere 1, H-6720 Szeged, Hungary
| | - Béla Gyurcsik
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary.
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18
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Conte-Daban A, Borghesani V, Sayen S, Guillon E, Journaux Y, Gontard G, Lisnard L, Hureau C. Link between Affinity and Cu(II) Binding Sites to Amyloid-β Peptides Evaluated by a New Water-Soluble UV-Visible Ratiometric Dye with a Moderate Cu(II) Affinity. Anal Chem 2017; 89:2155-2162. [PMID: 28208266 PMCID: PMC5714188 DOI: 10.1021/acs.analchem.6b04979] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Being able to easily determine the Cu(II) affinity for biomolecules of moderate affinity is important. Such biomolecules include amyloidogenic peptides, such as the well-known amyloid-β peptide involved in Alzheimer's disease. Here, we report the synthesis of a new water-soluble ratiometric Cu(II) dye with a moderate affinity (109 M-1 at pH 7.1) and the characterizations of the Cu(II) corresponding complex by X-ray crystallography, EPR, and XAS spectroscopic methods. UV-vis competition was performed on the Aβ peptide as well as on a wide series of modified peptides, leading to an affinity value of 1.6 × 109 M-1 at pH 7.1 for the Aβ peptide and to a coordination model for the Cu(II) site within the Aβ peptide that agrees with the one mostly accepted currently.
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Affiliation(s)
- Amandine Conte-Daban
- CNRS; LCC (Laboratoire de Chimie de Coordination) ; 205, route de Narbonne, F-31077 Toulouse, France. Université de Toulouse; UPS, INPT ; LCC ; F-31077 Toulouse, France
| | - Valentina Borghesani
- CNRS; LCC (Laboratoire de Chimie de Coordination) ; 205, route de Narbonne, F-31077 Toulouse, France. Université de Toulouse; UPS, INPT ; LCC ; F-31077 Toulouse, France
| | - Stéphanie Sayen
- Université de Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims (ICMR), UMR 7312 CNRS-URCA, Moulin de la Housse, BP 1039, 51687 Reims Cedex 2, France
| | - Emmanuel Guillon
- Université de Reims Champagne Ardenne, Institut de Chimie Moléculaire de Reims (ICMR), UMR 7312 CNRS-URCA, Moulin de la Housse, BP 1039, 51687 Reims Cedex 2, France
| | - Yves Journaux
- Sorbonne Universités, UPMC Univ. Paris 06, UMR 8232, IPCM, F-75005, Paris, France
- CNRS, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005, Paris, France
| | - Geoffrey Gontard
- Sorbonne Universités, UPMC Univ. Paris 06, UMR 8232, IPCM, F-75005, Paris, France
- CNRS, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005, Paris, France
| | - Laurent Lisnard
- Sorbonne Universités, UPMC Univ. Paris 06, UMR 8232, IPCM, F-75005, Paris, France
- CNRS, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005, Paris, France
| | - Christelle Hureau
- CNRS; LCC (Laboratoire de Chimie de Coordination) ; 205, route de Narbonne, F-31077 Toulouse, France. Université de Toulouse; UPS, INPT ; LCC ; F-31077 Toulouse, France
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19
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Banik A, Brown RE, Bamburg J, Lahiri DK, Khurana D, Friedland RP, Chen W, Ding Y, Mudher A, Padjen AL, Mukaetova-Ladinska E, Ihara M, Srivastava S, Padma Srivastava MV, Masters CL, Kalaria RN, Anand A. Translation of Pre-Clinical Studies into Successful Clinical Trials for Alzheimer's Disease: What are the Roadblocks and How Can They Be Overcome? J Alzheimers Dis 2016; 47:815-43. [PMID: 26401762 DOI: 10.3233/jad-150136] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Preclinical studies are essential for translation to disease treatments and effective use in clinical practice. An undue emphasis on single approaches to Alzheimer's disease (AD) appears to have retarded the pace of translation in the field, and there is much frustration in the public about the lack of an effective treatment. We critically reviewed past literature (1990-2014), analyzed numerous data, and discussed key issues at a consensus conference on Brain Ageing and Dementia to identify and overcome roadblocks in studies intended for translation. We highlight various factors that influence the translation of preclinical research and highlight specific preclinical strategies that have failed to demonstrate efficacy in clinical trials. The field has been hindered by the domination of the amyloid hypothesis in AD pathogenesis while the causative pathways in disease pathology are widely considered to be multifactorial. Understanding the causative events and mechanisms in the pathogenesis are equally important for translation. Greater efforts are necessary to fill in the gaps and overcome a variety of confounds in the generation, study design, testing, and evaluation of animal models and the application to future novel anti-dementia drug trials. A greater variety of potential disease mechanisms must be entertained to enhance progress.
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Affiliation(s)
- Avijit Banik
- Neuroscience Research Lab, Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Richard E Brown
- Department of Psychology and Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - James Bamburg
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, CO, USA
| | - Debomoy K Lahiri
- Departments of Psychiatry and of Medical & Molecular Genetics, Indiana University School of Medicine, Neuroscience Research Center, Indianapolis, IN, USA
| | - Dheeraj Khurana
- Neuroscience Research Lab, Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Robert P Friedland
- Department of Neurology, University of Louisville, School of Medicine, Louisville, KY, USA
| | - Wei Chen
- Division of Pulmonary Medicine, Allergy and Immunology, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh, Pittsburgh, PA, USA
| | - Ying Ding
- Department of Biostatistics, University of Pittsburgh, 318C Parran Hall, Pittsburgh, PA, USA
| | - Amritpal Mudher
- Southampton Neurosciences Group, University of Southampton, Southampton, UK
| | - Ante L Padjen
- Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, Canada
| | - Elizabeta Mukaetova-Ladinska
- Institute of Neuroscience, Newcastle University, NIHR Biomedical Research Building, Campus for Ageing and Vitality, Newcastle upon Tyne, UK
| | - Masafumi Ihara
- Department of Stroke and Cerebrovascular Diseases, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Sudhir Srivastava
- Division of Toxicology, Central Drug Research Institute, Lucknow, India
| | - M V Padma Srivastava
- Department of Neurology, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Colin L Masters
- Mental Health Research Institute, University of Melbourne, Royal Parade, The VIC, Australia
| | - Raj N Kalaria
- Institute of Neuroscience, Newcastle University, NIHR Biomedical Research Building, Campus for Ageing and Vitality, Newcastle upon Tyne, UK
| | - Akshay Anand
- Neuroscience Research Lab, Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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20
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Dong M, Li H, Hu D, Zhao W, Zhu X, Ai H. Molecular Dynamics Study on the Inhibition Mechanisms of Drugs CQ1-3 for Alzheimer Amyloid-β40 Aggregation Induced by Cu(2.). ACS Chem Neurosci 2016; 7:599-614. [PMID: 26871000 DOI: 10.1021/acschemneuro.5b00343] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The aggregation of amyloid-β (Aβ) peptide induced by Cu(2+) is a key factor in development of Alzheimer's disease (AD), and metal ion chelation therapy enables treatment of AD. Three CQi (i = 1, 2, and 3 with R = H, Cl, and NO2, respectively) drugs had been verified experimentally to be much stronger inhibitors than the pioneer clioquinol (CQ) in both disaggregation of Aβ40 aggregate and reduction of toxicity induced by Cu(2+) binding at low pH. Due to the multiple morphologies of Cu(2+)-Aβ40 complexes produced at different pH states, we performed a series of molecular dynamics simulations to explain the structural changes and morphology characteristics as well as intrinsic disaggregation mechanisms of three Cu(2+)-Aβ40 models in the presence of any of the three CQi drugs at both low and high pH states. Three inhibition mechanisms for CQi were proposed as "insertion", "semi-insertion", and "surface" mechanisms, based on the morphologies of CQi-model x (CQi-x, x = 1, 2, and 3) and the strengths of binding between CQi and the corresponding model x. The insertion mechanism was characterized by the morphology with binding strength of more than 100 kJ/mol and by CQi being inserted or embedded into the hydrophobic cavity of model x. In those CQi-x morphologies with lower binding strength, CQi only attaches on the surface or inserts partly into Aβ peptide. Given the evidence that the binding strength is correlated positively with the effectiveness of drug to inhibit Aβ aggregation and thus to reduce toxicity, the data of binding strength presented here can provide a reference for one to screen drugs. From the point of view of binding strength, CQ2 is the best drug. Because of the special role of Asp23 in both Aβ aggregation and stabilizing the Aβ fibril, the generation of a H-bond between CQ3 and Asp23 of the Aβ40 peptide is believed to be responsible for CQ3 having the strongest disaggregation capacity. Therefore, besides strong binding, stronger propensity to H-bond with Asp23 would be another key factor to be taken seriously into account in drug screens. Meanwhile, the structural characteristics of drug CQi itself are also worthy of attention. First, the increasing polarity from CQ1 and CQ2 to CQ3 in turn results in increasing probability and strength of the interaction between the drug and the N-terminal (NT) region of Aβ40, which obviously inhibits Aβ peptide aggregation induced by Cu(2+) binding. Second, both the benzothiazole ring and phenol ring of CQi can overcome the activation energy barrier (∼16 kJ/mol) to rotate flexibly around the intramolecular C7-N14 bond to achieve the maximum match and interaction with the ambient Aβ40 residues. Such a structural feature of CQi paves the new way for ones in selection and modification of a drug.
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Affiliation(s)
- Mingyan Dong
- School
of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Haoyue Li
- Shandong Polymer Bio-chemical Co., Ltd., Dongying 257081, China
| | - Dingkun Hu
- School
of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Wei Zhao
- School
of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Xueying Zhu
- School
of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Hongqi Ai
- School
of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
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21
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Zhang R, Ai H, Zhu X, Li Q. Molecular Simulations of Human and Mouse Aβ1-16
at Different pH Values: Structural Characteristics toward Understanding Cu2+
-Coordinated Amyloid Beta Spheres. Chemphyschem 2016; 17:1656-68. [DOI: 10.1002/cphc.201600004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Ran Zhang
- School of Chemistry and Chemical Engineering; University of Jinan; Jinan 250022 China
| | - Hongqi Ai
- School of Chemistry and Chemical Engineering; University of Jinan; Jinan 250022 China
| | - Xueying Zhu
- School of Chemistry and Chemical Engineering; University of Jinan; Jinan 250022 China
| | - Qiang Li
- School of Biological Science and Technology; University of Jinan; Jinan 250022 China
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22
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Johnson RA, Manley OM, Spuches AM, Grossoehme NE. Dissecting ITC data of metal ions binding to ligands and proteins. Biochim Biophys Acta Gen Subj 2015; 1860:892-901. [PMID: 26327285 DOI: 10.1016/j.bbagen.2015.08.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 08/19/2015] [Accepted: 08/25/2015] [Indexed: 01/12/2023]
Abstract
BACKGROUND ITC is a powerful technique that can reliably assess the thermodynamic underpinnings of a wide range of binding events. When metal ions are involved, complications arise in evaluating the data due to unavoidable solution chemistry that includes metal speciation and a variety of linked equilibria. SCOPE OF REVIEW This paper identifies these concerns, provides recommendations to avoid common mistakes, and guides the reader through the mathematical treatment of ITC data to arrive at a set of thermodynamic state functions that describe identical chemical events and, ideally, are independent of solution conditions. Further, common metal chromophores used in biological metal sensing studies are proposed as a robust system to determine unknown solution competition. MAJOR CONCLUSIONS Metal ions present several complications in ITC experiments. This review presents strategies to avoid these pitfalls and proposes and experimentally validates mathematical approaches to deconvolute complex equilibria that exist in these systems. GENERAL SIGNIFICANCE This review discusses the wide range of complications that exists in metal-based ITC experiments. It provides a starting point for scientists new to this field and articulates concerns that will help experienced researchers troubleshoot experiments.
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Affiliation(s)
- Rachel A Johnson
- Department of Chemistry, East Carolina University, Greenville, NC 27858, United States
| | - Olivia M Manley
- Department of Chemistry, Physics and Geology, Winthrop University, Rock Hill, SC 29730, United States
| | - Anne M Spuches
- Department of Chemistry, East Carolina University, Greenville, NC 27858, United States.
| | - Nicholas E Grossoehme
- Department of Chemistry, Physics and Geology, Winthrop University, Rock Hill, SC 29730, United States.
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23
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Nettles WL, Song H, Farquhar ER, Fitzkee NC, Emerson JP. Characterization of the Copper(II) Binding Sites in Human Carbonic Anhydrase II. Inorg Chem 2015; 54:5671-80. [PMID: 26010488 PMCID: PMC4482258 DOI: 10.1021/acs.inorgchem.5b00057] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Human carbonic anhydrase (CA) is a well-studied, robust, mononuclear Zn-containing metalloprotein that serves as an excellent biological ligand system to study the thermodynamics associated with metal ion coordination chemistry in aqueous solution. The apo form of human carbonic anhydrase II (CA) binds 2 equiv of copper(II) with high affinity. The Cu(2+) ions bind independently forming two noncoupled type II copper centers in CA (CuA and CuB). However, the location and coordination mode of the CuA site in solution is unclear, compared to the CuB site that has been well-characterized. Using paramagnetic NMR techniques and X-ray absorption spectroscopy we identified an N-terminal Cu(2+) binding location and collected information on the coordination mode of the CuA site in CA, which is consistent with a four- to five-coordinate N-terminal Cu(2+) binding site reminiscent to a number of N-terminal copper(II) binding sites including the copper(II)-amino terminal Cu(2+) and Ni(2+) and copper(II)-β-amyloid complexes. Additionally, we report a more detailed analysis of the thermodynamics associated with copper(II) binding to CA. Although we are still unable to fully deconvolute Cu(2+) binding data to the high-affinity CuA site, we derived pH- and buffer-independent values for the thermodynamics parameters K and ΔH associated with Cu(2+) binding to the CuB site of CA to be 2 × 10(9) and -17.4 kcal/mol, respectively.
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Affiliation(s)
- Whitnee L. Nettles
- Mississippi State University: Department of Chemistry Box 9573 Mississippi State University Mississippi State, MS 39762-9573
| | - He Song
- Mississippi State University: Department of Chemistry Box 9573 Mississippi State University Mississippi State, MS 39762-9573
| | - Erik R. Farquhar
- Case Western Reserve University Center for Synchrotron Biosciences, National Synchrotron Light Source, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Nicholas C. Fitzkee
- Mississippi State University: Department of Chemistry Box 9573 Mississippi State University Mississippi State, MS 39762-9573
| | - Joseph P. Emerson
- Mississippi State University: Department of Chemistry Box 9573 Mississippi State University Mississippi State, MS 39762-9573
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24
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Cong X, Poyton MF, Baxter AJ, Pullanchery S, Cremer PS. Unquenchable Surface Potential Dramatically Enhances Cu(2+) Binding to Phosphatidylserine Lipids. J Am Chem Soc 2015; 137:7785-92. [PMID: 26065920 DOI: 10.1021/jacs.5b03313] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, the apparent equilibrium dissociation constant, K(Dapp), between Cu(2+) and 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-l-serine (POPS), a negatively charged phospholipid, was measured as a function of PS concentrations in supported lipid bilayers (SLBs). The results indicated that K(Dapp) for Cu(2+) binding to PS-containing SLBs was enhanced by a factor of 17,000 from 110 nM to 6.4 pM as the PS density in the membrane was increased from 1.0 to 20 mol %. Although Cu(2+) bound bivalently to POPS at higher PS concentrations, this was not the dominant factor in increasing the binding affinity. Rather, the higher concentration of Cu(2+) within the double layer above the membrane was largely responsible for the tightening. Unlike the binding of other divalent metal ions such as Ca(2+) and Mg(2+) to PS, Cu(2+) binding does not alter the net negative charge on the membrane as the Cu(PS)2 complex forms. As such, the Cu(2+) concentration within the double layer region was greatly amplified relative to its concentration in bulk solution as the PS density was increased. This created a far larger enhancement to the apparent binding affinity than is observed by standard multivalent effects. These findings should help provide an understanding on the extent of Cu(2+)-PS binding in cell membranes, which may be relevant to biological processes such as amyloid-β peptide toxicity and lipid oxidation.
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25
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Gogineni DP, Spuches AM, Burns CS. Calorimetric investigation of copper binding in the N-terminal region of the prion protein at low copper loading: evidence for an entropically favorable first binding event. Inorg Chem 2014; 54:441-7. [PMID: 25541747 PMCID: PMC4303328 DOI: 10.1021/ic502014x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Although
the Cu2+-binding sites of the prion protein have been well
studied when the protein is fully saturated by Cu2+, the
Cu2+-loading mechanism is just beginning to come into view.
Because the Cu2+-binding modes at low and intermediate
Cu2+ occupancy necessarily represent the highest-affinity
binding modes, these are very likely populated under physiological
conditions, and it is thus essential to characterize them in order
to understand better the biological function of copper–prion
interactions. Besides binding-affinity data, almost no other thermodynamic
parameters (e.g., ΔH and ΔS) have been measured, thus leaving undetermined the enthalpic and
entropic factors that govern the free energy of Cu2+ binding
to the prion protein. In this study, isothermal titration calorimetry
(ITC) was used to quantify the thermodynamic parameters (K, ΔG, ΔH, and TΔS) of Cu2+ binding to
a peptide, PrP(23–28, 57–98), that encompasses the majority
of the residues implicated in Cu2+ binding by full-length
PrP. Use of the buffer N-(2-acetomido)-aminoethanesulfonic
acid (ACES), which is also a well-characterized Cu2+ chelator,
allowed for the isolation of the two highest affinity binding events.
Circular dichroism spectroscopy was used to characterize the different
binding modes as a function of added Cu2+. The Kd values determined by ITC, 7 and 380 nM, are
well in line with those reported by others. The first binding event
benefits significantly from a positive entropy, whereas the second
binding event is enthalpically driven. The thermodynamic values associated
with Cu2+ binding by the Aβ peptide, which is implicated
in Alzheimer’s disease, bear striking parallels to those found
here for the prion protein. The thermodynamics
(K, ΔG, ΔH, and TΔS) of the two highest
affinity Cu2+-binding events of the prion protein were
investigated using isothermal titration calorimetry. Peptide PrP(23−28,
57−98) was used as a model system for the metal-binding region.
The first binding event had a Kd of 7
nM and was entropically driven (+ΔS), whereas
the second binding event had a Kd of 380
nm and was enthalpically driven (−ΔH).
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Affiliation(s)
- Devi Praneetha Gogineni
- Department of Chemistry, East Carolina University , East 5th Street, Greenville, North Carolina 27858, United States
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26
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Schiopu I, Iftemi S, Luchian T. Nanopore investigation of the stereoselective interactions between Cu(2+) and D,L-histidine amino acids engineered into an amyloidic fragment analogue. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 31:387-396. [PMID: 25479713 DOI: 10.1021/la504243r] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Stereochemistry is an essential theme for a number of industries and applications, constructed around discriminating various chiral enantiomers, including amino acids, chiral metal complexes, and drugs. In this work, we designed a set of peptide mutants of the human amyloidic Aβ1-16 sequence, known to display an effective Cu(2+) coordinating pocket provided mainly by the intramolecular His-6, His-13, and His-14 residues, that were engineered to contain L- and D-His enantiomers in positions 6 and 13 and provide a local coordination environment with distinct Cu(2+) binding geometries and affinities. We examined the mechanism of selective chiral recognition of Cu(2+) by such mutant peptides, by quantifying their stochastic sensing in real time with a single α-hemolysin (α-HL) protein immobilized in a planar lipid membrane, while incubated in various concentrations of Cu(2+). Our data reveal that the Cu(2+)-binding affinity lies within the micromolar range, and decreases by orders of magnitude as L-His is replaced with its Denantiomer, with the effect being prevalent when such changes were inflicted on the His-6 residue. The presented results demonstrate the feasibility of tuning the metal selectivity in a relatively simple peptide substrate by enantiomeric replacement of key metal binding residues and illustrates the potential of the protein nanopores as a promising approach to quantify the chiral recognition of l/d amino acids by metals.
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Affiliation(s)
- Irina Schiopu
- Department of Interdisciplinary Research, Alexandru Ioan Cuza University , Blvd. Carol I, No. 11, Iasi 700506, Romania
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27
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del Rosso MG, Ciesielski A, Colella S, Harrowfield JM, Samorì P. Isothermal titration calorimetry study of a bistable supramolecular system: reversible complexation of cryptand[2.2.2] with potassium ions. Chemphyschem 2014; 15:2743-8. [PMID: 24986754 DOI: 10.1002/cphc.201402296] [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: 05/03/2014] [Indexed: 11/11/2022]
Abstract
Isothermal titration calorimetry (ITC) is used to investigate the thermodynamics of the complexation of potassium ions by 1,10-diaza-4,7,13,16,21,24-hexaoxabicyclo[8.8.8]hexacosane (cryptand[2.2.2]) in aqueous solution. By changing the pH of the solution it was possible to trigger the reversible complexation/decomplexation of the cryptand in consecutive in situ experiments and to assess for the first time the use of ITC to monitor the thermodynamics of a bistable system.
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Affiliation(s)
- Maria G del Rosso
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000 Strasbourg (France)
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Keskitalo S, Farkas M, Hanenberg M, Szodorai A, Kulic L, Semmler A, Weller M, Nitsch RM, Linnebank M. Reciprocal modulation of Aβ42 aggregation by copper and homocysteine. Front Aging Neurosci 2014; 6:237. [PMID: 25249976 PMCID: PMC4157544 DOI: 10.3389/fnagi.2014.00237] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 08/20/2014] [Indexed: 12/05/2022] Open
Abstract
Hyperhomocysteinemia is a risk factor for Alzheimer’s disease (AD). Both homocysteine (Hcy) and amyloid β (Aβ), which accumulates in the brain of AD patients, bind copper. Aim of this study was to test the hypothesis that the association of Hcy and AD results from a molecular interaction between Hcy and Aβ that is mediated by copper. We established a microtiter plate format thioflavin T aggregation assay to monitor Aβ42 fibrillization. Copper (5 μM) completely prevented Aβ42 (5 μM) fibrillization. Homocysteine in the absence of copper did not impact Aβ42 fibrillization, but physiological concentrations of Hcy (10–100 μM) attenuated the inhibitory effect of copper on Aβ42 fibril formation. These results were qualitatively confirmed by electron microscopy, which did not reveal morphological differences. To compare the toxicity of fibrillar and non-fibrillar Aβ42 exposed to copper or Hcy, rat primary cortical neurons were treated in vitro with 5 μM Aβ42 for 72 h. After incubation with 5 μM Aβ42 that had been aggregating in the absence of Hcy or copper, cell viability was reduced to 40%. Incubation with 5 μM Aβ42, in which fibril formation had been prevented or reverted by the addition of 5 μM copper, resulted in cell viability of approximately 25%. Accordingly, viability was reduced to 25% after incubation with 5 μM monomeric, i.e., non-fibrillized, Aβ42. The addition of Hcy plus copper to 5 μM Aβ42 yielded 50% viability. In conclusion, copper prevents and reverts Aβ fibril formation leading rather to formation of lower order oligomers or amorphous aggregates, and Hcy reduces these effects. Such mechanisms may explain the association of hyperhomocysteinemia and AD, leading to novel therapeutic strategies in the prevention and treatment of this disease.
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Affiliation(s)
- Salla Keskitalo
- Department of Neurology, University Hospital Zurich Zurich, Switzerland
| | - Melinda Farkas
- Department of Neurology, University Hospital Zurich Zurich, Switzerland
| | - Michael Hanenberg
- Division of Psychiatry Research, University of Zurich Schlieren, Switzerland
| | - Anita Szodorai
- Division of Psychiatry Research, University of Zurich Schlieren, Switzerland
| | - Luka Kulic
- Division of Psychiatry Research, University of Zurich Schlieren, Switzerland
| | - Alexander Semmler
- Department of Neurology, University Hospital Zurich Zurich, Switzerland
| | - Michael Weller
- Department of Neurology, University Hospital Zurich Zurich, Switzerland
| | - Roger M Nitsch
- Division of Psychiatry Research, University of Zurich Schlieren, Switzerland
| | - Michael Linnebank
- Department of Neurology, University Hospital Zurich Zurich, Switzerland
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29
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Chen J, Spěváček J, Hanyková L. NMR Methods to Study Effects of Additives on Phase Separation of Thermoresponsive Polymer. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/masy.201300130] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jianqiang Chen
- Environmental Engineering Department; Nanjing Forestry University; Longpan Rd. 159 210037 Nanjing P.R. China
| | - Jiří Spěváček
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovský Sq. 2 162 06 Prague 6 Czech Republic
| | - Lenka Hanyková
- Faculty of Mathematics and Physics; Charles University; V Holešovičkách 2 180 00 Prague 8 Czech Republic
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30
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Asandei A, Iftemi S, Mereuta L, Schiopu I, Luchian T. Probing of Various Physiologically Relevant Metals: Amyloid-β Peptide Interactions with a Lipid Membrane-Immobilized Protein Nanopore. J Membr Biol 2014; 247:523-30. [DOI: 10.1007/s00232-014-9662-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 03/27/2014] [Indexed: 11/28/2022]
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31
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Asandei A, Schiopu I, Iftemi S, Mereuta L, Luchian T. Investigation of Cu2+ binding to human and rat amyloid fragments Aβ (1-16) with a protein nanopore. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:15634-15642. [PMID: 24274576 DOI: 10.1021/la403915t] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Recent evidence shows that metal coordination by amyloid beta peptides (Aβ) determines structural alterations of peptides, and His-13 from Aβ is crucial for Cu(2+) binding. This study used the truncated, more soluble Aβ1-16 isoforms derived from human and rat amyloid peptides to explore their interaction with Cu(2+) by employing the membrane-immobilized α-hemolysin (α-HL) protein as a nanoscopic probe in conjunction with single-molecule electrophysiology techniques. Unexpectedly, the experimental data suggest that unlike the case of the human Aβ1-16 peptide, Cu(2+) complexation by its rat counterpart leads to an augmented association and dissociation kinetics of the peptide reversible interaction with the protein pore, as compared to the Cu(2+)-free peptide. Single-molecule electrophysiology data reveal that both human and rat Cu(2+)-complexed Aβ peptides induce a higher degree of current flow obstruction through the α-HL pore, as compared to the Cu(2+)-free peptides. It is suggested that morphology changes brought by Cu(2+) binding to such amyloidic fragments depend crucially upon the presence of the His-13 residue on the primary sequence of such peptide fragments, and the α-HL protein-based approach provides unique opportunities and challenges to probing metal-induced folding of peptides.
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Affiliation(s)
- Alina Asandei
- Department of Interdisciplinary Research and ‡Department of Physics, Laboratory of Molecular Biophysics and Medical Physics, Alexandru Ioan Cuza University , Boulevard Carol I, No. 11, Iasi 700506, Romania
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32
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Wärmländer S, Tiiman A, Abelein A, Luo J, Jarvet J, Söderberg KL, Danielsson J, Gräslund A. Biophysical studies of the amyloid β-peptide: interactions with metal ions and small molecules. Chembiochem 2013; 14:1692-704. [PMID: 23983094 DOI: 10.1002/cbic.201300262] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Indexed: 11/11/2022]
Abstract
Alzheimer's disease is the most common of the protein misfolding ("amyloid") diseases. The deposits in the brains of afflicted patients contain as a major fraction an aggregated insoluble form of the so-called amyloid β-peptides (Aβ peptides): fragments of the amyloid precursor protein of 39-43 residues in length. This review focuses on biophysical studies of the Aβ peptides: that is, of the aggregation pathways and intermediates observed during aggregation, of the molecular structures observed along these pathways, and of the interactions of Aβ with Cu and Zn ions and with small molecules that modify the aggregation pathways. Particular emphasis is placed on studies based on high-resolution and solid-state NMR methods. Theoretical studies relating to the interactions are also included. An emerging picture is that of Aβ peptides in aqueous solution undergoing hydrophobic collapse together with identical partners. There then follows a relatively slow process leading to more ordered secondary and tertiary (quaternary) structures in the growing aggregates. These aggregates eventually assemble into elongated fibrils visible by electron microscopy. Small molecules or metal ions that interfere with the aggregation processes give rise to a variety of aggregation products that may be studied in vitro and considered in relation to observations in cell cultures or in vivo. Although the heterogeneous nature of the processes makes detailed structural studies difficult, knowledge and understanding of the underlying physical chemistry might provide a basis for future therapeutic strategies against the disease. A final part of the review deals with the interactions that may occur between the Aβ peptides and the prion protein, where the latter is involved in other protein misfolding diseases.
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Affiliation(s)
- Sebastian Wärmländer
- Department of Biochemistry and Biophysics, The Arrhenius Laboratories, Stockholm University, 106 91 Stockholm (Sweden)
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33
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Nalivaeva NN, Turner AJ. The amyloid precursor protein: a biochemical enigma in brain development, function and disease. FEBS Lett 2013; 587:2046-54. [PMID: 23684647 DOI: 10.1016/j.febslet.2013.05.010] [Citation(s) in RCA: 170] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 05/06/2013] [Accepted: 05/06/2013] [Indexed: 12/11/2022]
Abstract
For 20 years the amyloid cascade hypothesis of Alzheimer disease (AD) has placed the amyloid-β peptide (Aβ), formed from the amyloid precursor protein (APP), centre stage in the process of neurodegeneration. However, no new therapeutic agents have reached the clinic through exploitation of the hypothesis. The APP metabolites, including Aβ, generated by its proteolytic processing, have distinct physiological functions. In particular, the cleaved intracellular domain of APP (AICD) regulates expression of several genes, including APP itself, the β-secretase BACE-1 and the Aβ-degrading enzyme, neprilysin and this transcriptional regulation involves direct promoter binding of AICD. Of the three major splice isoforms of APP (APP695, APP751, APP770), APP695 is the predominant neuronal form, from which Aβ and transcriptionally-active AICD are preferentially generated by selective processing through the amyloidogenic pathway. Despite intensive research, the normal functions of the APP isoforms remain an enigma. APP plays an important role in brain development, memory and synaptic plasticity and secreted forms of APP are neuroprotective. A fuller understanding of the physiological and pathological actions of APP and its metabolic and gene regulatory network could provide new therapeutic opportunities in neurodegeneration, including AD.
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Affiliation(s)
- Natalia N Nalivaeva
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.
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34
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Lv Z, Condron MM, Teplow DB, Lyubchenko YL. Nanoprobing of the effect of Cu(2+) cations on misfolding, interaction and aggregation of amyloid β peptide. J Neuroimmune Pharmacol 2013; 8:262-73. [PMID: 23143330 PMCID: PMC3586772 DOI: 10.1007/s11481-012-9416-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 10/29/2012] [Indexed: 12/15/2022]
Abstract
Misfolding and aggregation of the amyloid β-protein (Aβ) are hallmarks of Alzheimer's disease. Both processes are dependent on the environmental conditions, including the presence of divalent cations, such as Cu(2+). Cu(2+) cations regulate early stages of Aβ aggregation, but the molecular mechanism of Cu(2+) regulation is unknown. In this study we applied single molecule AFM force spectroscopy to elucidate the role of Cu(2+) cations on interpeptide interactions. By immobilizing one of two interacting Aβ42 molecules on a mica surface and tethering the counterpart molecule onto the tip, we were able to probe the interpeptide interactions in the presence and absence of Cu(2+) cations at pH 7.4, 6.8, 6.0, 5.0, and 4.0. The results show that the presence of Cu(2+) cations change the pattern of Aβ interactions for pH values between pH 7.4 and pH 5.0. Under these conditions, Cu(2+) cations induce Aβ42 peptide structural changes resulting in N-termini interactions within the dimers. Cu(2+) cations also stabilize the dimers. No effects of Cu(2+) cations on Aβ-Aβ interactions were observed at pH 4.0, suggesting that peptide protonation changes the peptide-cation interaction. The effect of Cu(2+) cations on later stages of Aβ aggregation was studied by AFM topographic images. The results demonstrate that substoichiometric Cu(2+) cations accelerate the formation of fibrils at pH 7.4 and 5.0, whereas no effect of Cu(2+) cations was observed at pH 4.0. Taken together, the combined AFM force spectroscopy and imaging analyses demonstrate that Cu(2+) cations promote both the initial and the elongation stages of Aβ aggregation, but protein protonation diminishes the effect of Cu(2+).
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Affiliation(s)
- Zhengjian Lv
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, Nebraska 68198
| | | | - David B. Teplow
- Department of Neurology, David Geffen School of Medicine at UCLA
- Molecular Biology and Brain Research Institutes, and Mary S. Easton Center for Alzheimer’s Disease Research at UCLA, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095
| | - Yuri L. Lyubchenko
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, Nebraska 68198
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35
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Alies B, Renaglia E, Rózga M, Bal W, Faller P, Hureau C. Cu(II) Affinity for the Alzheimer’s Peptide: Tyrosine Fluorescence Studies Revisited. Anal Chem 2013; 85:1501-8. [DOI: 10.1021/ac302629u] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Bruno Alies
- CNRS, LCC (Laboratoire de Chimie de Coordination),
205 Route de Narbonne,
BP 44099, F-31077 Toulouse, Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| | - Emelyne Renaglia
- CNRS, LCC (Laboratoire de Chimie de Coordination),
205 Route de Narbonne,
BP 44099, F-31077 Toulouse, Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| | - Malgorzata Rózga
- Institute of Biochemistry and
Biophysics, Polish Academy of Sciences,
Pawińskiego 5A, 02-106 Warsaw, Poland
| | - Wojciech Bal
- Institute of Biochemistry and
Biophysics, Polish Academy of Sciences,
Pawińskiego 5A, 02-106 Warsaw, Poland
| | - Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination),
205 Route de Narbonne,
BP 44099, F-31077 Toulouse, Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination),
205 Route de Narbonne,
BP 44099, F-31077 Toulouse, Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
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36
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Alies B, Bijani C, Sayen S, Guillon E, Faller P, Hureau C. Copper coordination to native N-terminally modified versus full-length amyloid-β: second-sphere effects determine the species present at physiological pH. Inorg Chem 2012; 51:12988-3000. [PMID: 23150940 DOI: 10.1021/ic302097d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Alzheimer's disease is characterized by senile plaques in which metallic ions (copper, zinc, and iron) are colocalized with amyloid-β peptides of different sequences in aggregated forms. In addition to the full-length peptides (Aβ1-40/42), N-terminally truncated Aβ3-40/42 forms and their pyroglutamate counterparts, Aβp3-40/42, have been proposed to play key features in the aggregation process, leading to the senile plaques. Furthermore, they have been shown to be more toxic than the full-length Aβ, which made them central targets for therapeutic approaches. In order to better disentangle the possible role of metallic ions in the aggregation process, copper(II) coordination to the full-length amyloid peptides has been extensively studied in the last years. However, regarding the N-terminally modified forms at position 3, very little is known. Therefore, copper(I) and copper(II) coordination to those peptides have been investigated in the present report using a variety of complementary techniques and as a function of pH. Copper(I) coordination is not affected by the N-terminal modifications. In contrast, copper(II) coordination is different from that previously reported for the full-length peptide. In the case of the pyroglutamate form, this is due to preclusion of N-terminal amine binding. In the case of the N-terminally truncated form, alteration in copper(II) coordination is caused by second-sphere effects that impact the first binding shell and the pH-dependent repartition of the various [Cu(peptide)] complexes. Such second-sphere effects are anticipated to apply to a variety of metal ions and peptides, and their importance on changing the first binding shell has not been fully recognized yet.
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Affiliation(s)
- Bruno Alies
- Laboratoire de Chimie de Coordination (LCC), CNRS, 205 route de Narbonne, F-31077 Toulouse, France.
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37
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Coordination of redox active metal ions to the amyloid precursor protein and to amyloid-β peptides involved in Alzheimer disease. Part 1: An overview. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.03.037] [Citation(s) in RCA: 132] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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38
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Faller P, Hureau C, Dorlet P, Hellwig P, Coppel Y, Collin F, Alies B. Methods and techniques to study the bioinorganic chemistry of metal–peptide complexes linked to neurodegenerative diseases. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.03.015] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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39
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Hureau C, Dorlet P. Coordination of redox active metal ions to the amyloid precursor protein and to amyloid-β peptides involved in Alzheimer disease. Part 2: Dependence of Cu(II) binding sites with Aβ sequences. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.03.034] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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40
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Copper, zinc and iron in neurodegenerative diseases (Alzheimer's, Parkinson's and prion diseases). Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.03.013] [Citation(s) in RCA: 306] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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41
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Eskici G, Axelsen PH. Copper and Oxidative Stress in the Pathogenesis of Alzheimer’s Disease. Biochemistry 2012; 51:6289-311. [DOI: 10.1021/bi3006169] [Citation(s) in RCA: 204] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Gözde Eskici
- Departments of Pharmacology, Biochemistry and Biophysics,
and Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania 19104, United
States
| | - Paul H. Axelsen
- Departments of Pharmacology, Biochemistry and Biophysics,
and Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania 19104, United
States
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42
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Ginotra YP, Ramteke SN, Srikanth R, Kulkarni PP. Mass spectral studies reveal the structure of Aβ1-16-Cu2+ complex resembling ATCUN motif. Inorg Chem 2012; 51:7960-2. [PMID: 22804558 DOI: 10.1021/ic301244x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In Alzheimer's disease, copper binds to amyloid beta (Aβ) peptide and generates oxidative stress. The coordination of histidine (His) residues to Cu(2+) is still uncertain. We studied Cu(2+) binding to Aβ1-16 peptide using the diethyl pyrocarbonate (DEPC) assay and mass spectrometry. Our results show that only one His is involved in Cu(2+) coordination, which is identified as His6 using mass spectral studies. Novel nickel displacement studies have further supported the proposal that the Cu(2+) binding site of Aβ1-16 peptide resembles the ATCUN motif of human serum albumin.
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Affiliation(s)
- Yamini P Ginotra
- Biometry and Nutrition Group, Agharkar Research Institute, Pune-411004, India
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43
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Affiliation(s)
- Kasper P Kepp
- DTU Chemistry, Technical University of Denmark, DK 2800 Kongens Lyngby, Denmark.
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44
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Ghai R, Falconer RJ, Collins BM. Applications of isothermal titration calorimetry in pure and applied research--survey of the literature from 2010. J Mol Recognit 2012; 25:32-52. [PMID: 22213449 DOI: 10.1002/jmr.1167] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Isothermal titration calorimetry (ITC) is a biophysical technique for measuring the formation and dissociation of molecular complexes and has become an invaluable tool in many branches of science from cell biology to food chemistry. By measuring the heat absorbed or released during bond formation, ITC provides accurate, rapid, and label-free measurement of the thermodynamics of molecular interactions. In this review, we survey the recent literature reporting the use of ITC and have highlighted a number of interesting studies that provide a flavour of the diverse systems to which ITC can be applied. These include measurements of protein-protein and protein-membrane interactions required for macromolecular assembly, analysis of enzyme kinetics, experimental validation of molecular dynamics simulations, and even in manufacturing applications such as food science. Some highlights include studies of the biological complex formed by Staphylococcus aureus enterotoxin C3 and the murine T-cell receptor, the mechanism of membrane association of the Parkinson's disease-associated protein α-synuclein, and the role of non-specific tannin-protein interactions in the quality of different beverages. Recent developments in automation are overcoming limitations on throughput imposed by previous manual procedures and promise to greatly extend usefulness of ITC in the future. We also attempt to impart some practical advice for getting the most out of ITC data for those researchers less familiar with the method.
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Affiliation(s)
- Rajesh Ghai
- Institute for Molecular Bioscience (IMB), University of Queensland, St. Lucia, Queensland, 4072, Australia
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45
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Sacco C, Skowronsky RA, Gade S, Kenney JM, Spuches AM. Calorimetric investigation of copper(II) binding to Aβ peptides: thermodynamics of coordination plasticity. J Biol Inorg Chem 2012; 17:531-41. [DOI: 10.1007/s00775-012-0874-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 01/04/2012] [Indexed: 10/14/2022]
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46
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Structural characterization of Cu2+, Ni2+ and Zn2+ binding sites of model peptides associated with neurodegenerative diseases. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2011.07.004] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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47
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Arena G, Pappalardo G, Sovago I, Rizzarelli E. Copper(II) interaction with amyloid-β: Affinity and speciation. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2011.07.012] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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48
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Alies B, Badei B, Faller P, Hureau C. Reevaluation of copper(I) affinity for amyloid-β peptides by competition with ferrozine--an unusual copper(I) indicator. Chemistry 2011; 18:1161-7. [PMID: 22189983 DOI: 10.1002/chem.201102746] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Indexed: 12/26/2022]
Abstract
The association constant of ferrozine (5,6-diphenyl-3-(2-pyridyl)-1,2,4-triazine-4,4''-disulfonic acid) with Cu(I) to form the chromophoric [Cu(I)(Fz)(2)](3-) complex was determined by UV/Vis titration experiments in Hepes buffer (0.1 M, pH 7.4). An association constant close to 10(12) M(-2), which is significantly weaker than those of the well-known, water-soluble, Cu(I) chelators bicinchoninic acid and 2,9-dimethyl-4,7-diphenyl-1,10-phenantroline disulfonic acid, was found. The [Cu(I)(Fz)(2)](3-) chromophore was used in UV/Vis competition experiments to determine Cu(I) binding affinity for the amyloid-β peptide involved in Alzheimer's disease and for a series of pertinent mutants. An association constant of approximately 10(7) M(-1) was found; this is much weaker than that reported for dithiothreitol and confirms that imidazoles are harder ligands than thiolates. Each His mutation (H6A, H13A, and H14A) impacts the peptide affinity for Cu(I). The native human amyloid-β peptide was found to be a fourfold-stronger Cu(I) ligand than the murine peptide, which differs by three point mutations (R5G, Y10F, and H13R) from the human one.
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Affiliation(s)
- Bruno Alies
- CNRS, Laboratoire de Chimie de Coordination, 205, route de Narbonne, 31077 Toulouse, France
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49
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Lakatos A, Gyurcsik B, Nagy NV, Csendes Z, Wéber E, Fülöp L, Kiss T. Histidine-rich branched peptides as Cu(II) and Zn(II) chelators with potential therapeutic application in Alzheimer's disease. Dalton Trans 2011; 41:1713-26. [PMID: 22159144 DOI: 10.1039/c1dt10989h] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two histidine-rich branched peptides with one lysine as a branching unit have been designed and synthesized by solid-phase peptide synthesis. Their complex formation with Cu(II) and Zn(II) as well as their ability to attenuate the metal-ion induced amyloid aggregation has been characterized. Both peptides can keep Cu(II) and Zn(II) in complexed forms at pH 7.4 and can bind two equivalents of metal ions in solutions with excess metal. The stoichiometry, stability and structure of the complexes formed have been determined by pH potentiometry, UV-Vis spectrophotometry, circular dichroism, EPR and NMR spectroscopy and ESI-MS. Both mono- and bimetallic species have been detected over the whole pH range studied. The basic binding mode is either a tridentate {N(amino), N(amide), N(im)} or a histamine-type of coordination which is complemented by the binding of far imidazole or amino groups leading to macrochelate formation. The peptides were able to prevent Cu(II)-induced Aβ(1-40) aggregation but could not effectively compete for Zn(II) in vitro. Our results suggest that branched peptides containing potential metal-binding sites may be suitable metal chelators for reducing the risk of amyloid plaque formation in Alzheimer's disease.
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Affiliation(s)
- Andrea Lakatos
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, H-6720, Szeged, Hungary.
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50
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Azimi S, Rauk A. On the involvement of copper binding to the N-terminus of the amyloid Beta Peptide of Alzheimer's disease: a computational study on model systems. Int J Alzheimers Dis 2011; 2011:539762. [PMID: 22191059 PMCID: PMC3235578 DOI: 10.4061/2011/539762] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 08/04/2011] [Accepted: 08/16/2011] [Indexed: 12/27/2022] Open
Abstract
Density functional and second order Moller-Plesset perturbation theoretical methods, coupled with a polarizable continuum model of water, were applied to determine the structures, binding affinities, and reduction potentials of Cu(II) and Cu(I) bound to models of the Asp1, Ala2, His6, and His13His14 regions of the amyloid beta peptide of Alzheimer's disease. The results indicate that the N-terminal Asp binds to Cu(II) together with His6 and either His13 or His14 to form the lower pH Component I of Aβ. Component II of Aβ is the complex between Cu(II) and His6, His13, and His14, to which an amide O (of Ala2) is also coordinated. Asp1 does not bind to Cu(II) if three His residues are attached nor to any Cu(I) species to which one or more His residues are bound. The most stable Cu(I) species is one in which Cu(I) bridges the Nδ of His13 and His14 in a linear fashion. Cu(I) binds more strongly to Aβ than does Cu(II). The computed reduction potential that closely matches the experimental value for Cu(II)/Aβ corresponds to reduction of Component II (without Ala2) to the Cu(I) complex after endergonic attachment of His6.
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Affiliation(s)
- Samira Azimi
- Department of Chemistry, The University of Calgary, Calgary AB, Canada T2N 1N4
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