201
|
Lago L, Nunes EA, Vigato AA, Souza VCO, Barbosa F, Sato JR, Batista BL, Cerchiaro G. Flow of essential elements in subcellular fractions during oxidative stress. Biometals 2017; 30:83-96. [PMID: 28083799 DOI: 10.1007/s10534-016-9988-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 12/27/2016] [Indexed: 12/31/2022]
Abstract
Essential trace elements are commonly found in altered concentrations in the brains of patients with neurodegenerative diseases. Many studies in trace metal determination and quantification are conducted in tissue, cell culture or whole brain. In the present investigation, we determined by ICP-MS Fe, Cu, Zn, Ca, Se, Co, Cr, Mg, and Mn in organelles (mitochondria, nuclei) and whole motor neuron cell cultured in vitro. We performed experiments using two ways to access oxidative stress: cell treatments with H2O2 or Aβ-42 peptide in its oligomeric form. Both treatments caused accumulation of markers of oxidative stress, such as oxidized proteins and lipids, and alteration in DNA. Regarding trace elements, cells treated with H2O2 showed higher levels of Zn and lower levels of Ca in nuclei when compared to control cells with no oxidative treatments. On the other hand, cells treated with Aβ-42 peptide in its oligomeric form showed higher levels of Mg, Ca, Fe and Zn in nuclei when compared to control cells. These differences showed that metal flux in cell organelles during an intrinsic external oxidative condition (H2O2 treatment) are different from an intrinsic external neurodegenerative treatment.
Collapse
Affiliation(s)
- Larissa Lago
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil
| | - Emilene A Nunes
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil
| | - Aryane A Vigato
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil
| | - Vanessa C O Souza
- Department of Clinical Analysis, Toxicological and Bromatological, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo - USP, Ribeirão Prêto, Brazil
| | - Fernando Barbosa
- Department of Clinical Analysis, Toxicological and Bromatological, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo - USP, Ribeirão Prêto, Brazil
| | - João R Sato
- Center for Mathematics, Computation, and Cognition, Universidade Federal do ABC - UFABC, São Bernardo do Campo, SP, Brazil
| | - Bruno L Batista
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil
| | - Giselle Cerchiaro
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil.
| |
Collapse
|
202
|
Koleša-Dobravc T, Maejima K, Yoshikawa Y, Meden A, Yasui H, Perdih F. Vanadium and zinc complexes of 5-cyanopicolinate and pyrazine derivatives: synthesis, structural elucidation and in vitro insulino-mimetic activity study. NEW J CHEM 2017. [DOI: 10.1039/c6nj02961b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inhibition of free fatty acid release from rat adipocytes was observed for vanadium(iv), vanadium(v) and zinc(ii) complexes.
Collapse
Affiliation(s)
- Tanja Koleša-Dobravc
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| | - Keiichi Maejima
- Department of Analytical and Bioinorganic Chemistry
- Division of Analytical and Physical Chemistry
- Kyoto Pharmaceutical University
- Kyoto 607-8414
- Japan
| | - Yutaka Yoshikawa
- Department of Health, Sports, and Nutrition
- Faculty of Health and Welfare
- Kobe Women's University
- Kobe
- Japan
| | - Anton Meden
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| | - Hiroyuki Yasui
- Department of Analytical and Bioinorganic Chemistry
- Division of Analytical and Physical Chemistry
- Kyoto Pharmaceutical University
- Kyoto 607-8414
- Japan
| | - Franc Perdih
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| |
Collapse
|
203
|
Ferreira RCM, Costa SPG, Gonçalves H, Belsley M, Raposo MMM. Fluorescent phenanthroimidazoles functionalized with heterocyclic spacers: synthesis, optical chemosensory ability and two-photon absorption (TPA) properties. NEW J CHEM 2017. [DOI: 10.1039/c7nj02113e] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Fluorescent phenanthroimidazoles bearing heterocyclic spacers as novel optical chemosensors and two-photon absorption chromophores.
Collapse
Affiliation(s)
| | - Susana P. G. Costa
- Centre of Chemistry
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
- Portugal
| | - Hugo Gonçalves
- Centre of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
- Portugal
| | - Michael Belsley
- Centre of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
- Portugal
| | | |
Collapse
|
204
|
Karcz D, Matwijczuk A, Boroń B, Creaven B, Fiedor L, Niewiadomy A, Gagoś M. Isolation and spectroscopic characterization of Zn(II), Cu(II), and Pd(II) complexes of 1,3,4-thiadiazole-derived ligand. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
205
|
González-Domínguez R. Size Fractionation of Metal Species from Serum Samples for Studying Element Biodistribution in Alzheimer’s Disease. METALS IN THE BRAIN 2017. [DOI: 10.1007/978-1-4939-6918-0_8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
206
|
Megger DA, Rosowski K, Radunsky C, Kösters J, Sitek B, Müller J. Structurally related hydrazone-based metal complexes with different antitumor activities variably induce apoptotic cell death. Dalton Trans 2017; 46:4759-4767. [DOI: 10.1039/c6dt04613d] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Three new metal complexes bearing a tridentate hydrazone-based ligand were synthesized and structurally characterized. Depending on the metal ion, the complexes show remarkably different antitumor activities.
Collapse
Affiliation(s)
- Dominik A. Megger
- Medizinisches Proteom-Center
- Ruhr-Universität Bochum
- 44801 Bochum
- Germany
| | - Kristin Rosowski
- Medizinisches Proteom-Center
- Ruhr-Universität Bochum
- 44801 Bochum
- Germany
| | - Christian Radunsky
- Institut für Anorganische und Analytische Chemie
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Jutta Kösters
- Institut für Anorganische und Analytische Chemie
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Barbara Sitek
- Medizinisches Proteom-Center
- Ruhr-Universität Bochum
- 44801 Bochum
- Germany
| | - Jens Müller
- Institut für Anorganische und Analytische Chemie
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| |
Collapse
|
207
|
Qu S, Zheng C, Liao G, Fan C, Liu G, Pu S. A fluorescent chemosensor for Sn2+ and Cu2+ based on a carbazole-containing diarylethene. RSC Adv 2017. [DOI: 10.1039/c6ra27339d] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
A carbazole-containing diarylethene was synthesized. Its fluorescence was enhanced and quenched, respectively, upon addition of Sn2+ and Cu2+ over other cations. Moreover, the compound can be applied to detect Sn2+ and Cu2+ in natural water sample.
Collapse
Affiliation(s)
- Shengzu Qu
- Jiangxi Key Laboratory of Organic Chemistry
- Jiangxi Science and Technology Normal University
- Nanchang
- PR China
| | - Chunhong Zheng
- Jiangxi Key Laboratory of Organic Chemistry
- Jiangxi Science and Technology Normal University
- Nanchang
- PR China
| | - Guanming Liao
- Jiangxi Key Laboratory of Organic Chemistry
- Jiangxi Science and Technology Normal University
- Nanchang
- PR China
| | - Congbin Fan
- Jiangxi Key Laboratory of Organic Chemistry
- Jiangxi Science and Technology Normal University
- Nanchang
- PR China
| | - Gang Liu
- Jiangxi Key Laboratory of Organic Chemistry
- Jiangxi Science and Technology Normal University
- Nanchang
- PR China
| | - Shouzhi Pu
- Jiangxi Key Laboratory of Organic Chemistry
- Jiangxi Science and Technology Normal University
- Nanchang
- PR China
| |
Collapse
|
208
|
Highly Selective and Sensitive Colorimetric and Fluorescent Chemosensor for Rapid Detection of Ag+, Cu2+ and Hg2+ Based on a Simple Schiff Base. J Fluoresc 2016; 27:729-737. [DOI: 10.1007/s10895-016-2005-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 12/11/2016] [Indexed: 11/26/2022]
|
209
|
Kim M, Kim EH, Choi BR, Woo HJ. Differentially expressed genes in iron-induced prion protein conversion. Biochem Biophys Res Commun 2016; 480:734-740. [PMID: 27983987 DOI: 10.1016/j.bbrc.2016.10.117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 10/27/2016] [Indexed: 01/26/2023]
Abstract
The conversion of the cellular prion protein (PrPC) to the protease-resistant isoform is the key event in chronic neurodegenerative diseases, including transmissible spongiform encephalopathies (TSEs). Increased iron in prion-related disease has been observed due to the prion protein-ferritin complex. Additionally, the accumulation and conversion of recombinant PrP (rPrP) is specifically derived from Fe(III) but not Fe(II). Fe(III)-mediated PK-resistant PrP (PrPres) conversion occurs within a complex cellular environment rather than via direct contact between rPrP and Fe(III). In this study, differentially expressed genes correlated with prion degeneration by Fe(III) were identified using Affymetrix microarrays. Following Fe(III) treatment, 97 genes were differentially expressed, including 85 upregulated genes and 12 downregulated genes (≥1.5-fold change in expression). However, Fe(II) treatment produced moderate alterations in gene expression without inducing dramatic alterations in gene expression profiles. Moreover, functional grouping of identified genes indicated that the differentially regulated genes were highly associated with cell growth, cell maintenance, and intra- and extracellular transport. These findings showed that Fe(III) may influence the expression of genes involved in PrP folding by redox mechanisms. The identification of genes with altered expression patterns in neural cells may provide insights into PrP conversion mechanisms during the development and progression of prion-related diseases.
Collapse
Affiliation(s)
- Minsun Kim
- Laboratory of Immunology and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Eun-Hee Kim
- Laboratory of Immunology and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Bo-Ran Choi
- Laboratory of Immunology and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea; Solomon Snyder Department of Neuroscience, School of Medicine, Johns Hopkins University, PCTB1004, 725 N Wolfe Street, Baltimore, MD, USA
| | - Hee-Jong Woo
- Laboratory of Immunology and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.
| |
Collapse
|
210
|
Xue D, Zheng C, Qu S, Liao G, Fan C, Liu G, Pu S. A highly selective fluorescent chemosensor for Cu2+
: synthesis and properties of a rhodamine B-containing diarylethene. LUMINESCENCE 2016; 32:652-660. [DOI: 10.1002/bio.3234] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 09/12/2016] [Accepted: 09/13/2016] [Indexed: 01/27/2023]
Affiliation(s)
- Dandan Xue
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang People's Republic of China
| | - Chunhong Zheng
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang People's Republic of China
| | - Shengzu Qu
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang People's Republic of China
| | - Guanming Liao
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang People's Republic of China
| | - Congbin Fan
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang People's Republic of China
| | - Gang Liu
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang People's Republic of China
| | - Shouzhi Pu
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang People's Republic of China
| |
Collapse
|
211
|
The role of neuropathological markers in the interpretation of neuropsychiatric disorders: Focus on fetal and perinatal programming. Neurosci Lett 2016; 669:75-82. [PMID: 27818357 DOI: 10.1016/j.neulet.2016.10.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 12/29/2022]
Abstract
The study of neuropathological markers in patients affected by mental/psychiatric disorders is relevant for the comprehension of the pathogenesis and the correlation with the clinical symptomatology. The neuropathology of Alzheimer's disease (AD) recognizes intraneuronal and extracellular neurofibrillary formation responsible for neuronal degeneration. Immunohistochemical studies discovered many interesting results for a better interpretation of the AD pathogenesis, while the "metal hypothesis" supports that metal ions might differentially influence the formation of amyloid aggregates. The most relevant pathological findings reported in schizophrenia originate from computer assisted tomography (CT), Magnetic Resonance Imaging (MRI) studies and Diffusion Tensor Imaging (DTI), suggesting the brain abnormalities involved in the pathophysiology of schizophrenia. The theory of fetal programming illustrates the epigenetic factors that may act during the intrauterine life on brain development, with relevant consequences on the susceptibility to develop AD or schizophrenia later in life. The neuropathological interpretation of AD and schizophrenia shows that the presence of severe neuropathological changes is not always associated with severe cognitive impairment. A better dialogue between psychiatrics and pathologists might help to halt insurgence and progression of neurodegenerative diseases.
Collapse
|
212
|
Challenges in studying the structures of metal-amyloid oligomers related to type 2 diabetes, Parkinson's disease, and Alzheimer's disease. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.04.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
213
|
Hecel A, De Ricco R, Valensin D. Influence of membrane environments and copper ions on the structural features of amyloidogenic proteins correlated to neurodegeneration. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.06.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
214
|
Sóvágó I, Várnagy K, Lihi N, Grenács Á. Coordinating properties of peptides containing histidyl residues. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.04.015] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
215
|
Schwing K, Gerhards M. Investigations on isolated peptides by combined IR/UV spectroscopy in a molecular beam – structure, aggregation, solvation and molecular recognition. INT REV PHYS CHEM 2016. [DOI: 10.1080/0144235x.2016.1229331] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
216
|
Conte-Daban A, Day A, Faller P, Hureau C. How Zn can impede Cu detoxification by chelating agents in Alzheimer's disease: a proof-of-concept study. Dalton Trans 2016; 45:15671-15678. [PMID: 27711738 PMCID: PMC5123634 DOI: 10.1039/c6dt02308h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 08/23/2016] [Indexed: 01/31/2023]
Abstract
The role of Cu and Zn ions in Alzheimer's disease is linked to the consequences of their coordination to the amyloid-β (Aβ) peptide, i.e. to the modulation of Aβ aggregation and to the production of Reactive Oxygen Species (ROS), two central events of the so-called amyloid cascade. The role of both ions in Aβ aggregation is still controversial. Conversely the higher toxicity of the redox competent Cu ions (compared to the redox inert Zn ions) in ROS production is acknowledged. Thus the Cu ions can be considered as the main therapeutic target. Because Zn ions are present in higher quantity than Cu ions in the synaptic cleft, they can prevent detoxification of Cu by chelators unless they have an unusually high Cu over Zn selectivity. We describe a proof-of-concept study where the role of Zn on the metal swap reaction between two prototypical ligands and the Cu(Aβ) species has been investigated by several complementary spectroscopic techniques (UV-Vis, EPR and XANES). The first ligand has a higher Cu over Zn selectivity relative to the one of Aβ peptide while the second one exhibits a classical Cu over Zn selectivity. How Zn impacts the effect of the ligands on Cu-induced ROS production and Aβ aggregation is also reported.
Collapse
Affiliation(s)
- Amandine Conte-Daban
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France. and University of Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
| | - Adam Day
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France. and University of Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
| | - Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France. and University of Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France. and University of Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
| |
Collapse
|
217
|
Coordination and redox properties of copper interaction with α-synuclein. J Inorg Biochem 2016; 163:292-300. [DOI: 10.1016/j.jinorgbio.2016.04.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/11/2016] [Accepted: 04/04/2016] [Indexed: 11/23/2022]
|
218
|
Vaccaro BJ, Lancaster WA, Thorgersen MP, Zane GM, Younkin AD, Kazakov AE, Wetmore KM, Deutschbauer A, Arkin AP, Novichkov PS, Wall JD, Adams MWW. Novel Metal Cation Resistance Systems from Mutant Fitness Analysis of Denitrifying Pseudomonas stutzeri. Appl Environ Microbiol 2016; 82:6046-56. [PMID: 27474723 PMCID: PMC5038046 DOI: 10.1128/aem.01845-16] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 07/27/2016] [Indexed: 02/02/2023] Open
Abstract
UNLABELLED Metal ion transport systems have been studied extensively, but the specificity of a given transporter is often unclear from amino acid sequence data alone. In this study, predicted Cu(2+) and Zn(2+) resistance systems in Pseudomonas stutzeri strain RCH2 are compared with those experimentally implicated in Cu(2+) and Zn(2+) resistance, as determined by using a DNA-barcoded transposon mutant library. Mutant fitness data obtained under denitrifying conditions are combined with regulon predictions to yield a much more comprehensive picture of Cu(2+) and Zn(2+) resistance in strain RCH2. The results not only considerably expand what is known about well-established metal ion exporters (CzcCBA, CzcD, and CusCBA) and their accessory proteins (CzcI and CusF), they also reveal that isolates with mutations in some predicted Cu(2+) resistance systems do not show decreased fitness relative to the wild type when exposed to Cu(2+) In addition, new genes are identified that have no known connection to Zn(2+) (corB, corC, Psest_3226, Psest_3322, and Psest_0618) or Cu(2+) resistance (Mrp antiporter subunit gene, Psest_2850, and Psest_0584) but are crucial for resistance to these metal cations. Growth of individual deletion mutants lacking corB, corC, Psest_3226, or Psest_3322 confirmed the observed Zn-dependent phenotypes. Notably, to our knowledge, this is the first time a bacterial homolog of TMEM165, a human gene responsible for a congenital glycosylation disorder, has been deleted and the resulting strain characterized. Finally, the fitness values indicate Cu(2+)- and Zn(2+)-based inhibition of nitrite reductase and interference with molybdenum cofactor biosynthesis for nitrate reductase. These results extend the current understanding of Cu(2+) and Zn(2+) efflux and resistance and their effects on denitrifying metabolism. IMPORTANCE In this study, genome-wide mutant fitness data in P. stutzeri RCH2 combined with regulon predictions identify several proteins of unknown function that are involved in resisting zinc and copper toxicity. For zinc, these include a member of the UPF0016 protein family that was previously implicated in Ca(2+)/H(+) antiport and a human congenital glycosylation disorder, CorB and CorC, which were previously linked to Mg(2+) transport, and Psest_3322 and Psest_0618, two proteins with no characterized homologs. Experiments using mutants lacking Psest_3226, Psest_3322, corB, corC, or czcI verified their proposed functions, which will enable future studies of these little-characterized zinc resistance determinants. Likewise, Psest_2850, annotated as an ion antiporter subunit, and the conserved hypothetical protein Psest_0584 are implicated in copper resistance. Physiological connections between previous studies and phenotypes presented here are discussed. Functional and mechanistic understanding of transport proteins improves the understanding of systems in which members of the same protein family, including those in humans, can have different functions.
Collapse
Affiliation(s)
- Brian J Vaccaro
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA
| | - W Andrew Lancaster
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA
| | - Michael P Thorgersen
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA
| | - Grant M Zane
- Department of Biochemistry, University of Missouri, Columbia, Missouri, USA
| | - Adam D Younkin
- Department of Biochemistry, University of Missouri, Columbia, Missouri, USA
| | - Alexey E Kazakov
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Kelly M Wetmore
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Adam Deutschbauer
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Adam P Arkin
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Pavel S Novichkov
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Judy D Wall
- Department of Biochemistry, University of Missouri, Columbia, Missouri, USA
| | - Michael W W Adams
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA
| |
Collapse
|
219
|
Kostyukevich Y, Yacovlev P, Kononikhin A, Popov I, Bugrova A, Starodubtzeva N, Nikolaev E. The use of H/D exchange for secondary structure characterization of supermetallized complexes of ubiquitin with cerium(III). RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1068162016040117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
220
|
Alies B, Conte-Daban A, Sayen S, Collin F, Kieffer I, Guillon E, Faller P, Hureau C. Zinc(II) Binding Site to the Amyloid-β Peptide: Insights from Spectroscopic Studies with a Wide Series of Modified Peptides. Inorg Chem 2016; 55:10499-10509. [PMID: 27665863 PMCID: PMC5069684 DOI: 10.1021/acs.inorgchem.6b01733] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The Zn(II) ion has been linked to Alzheimer's disease (AD) due to its ability to modulate the aggregating properties of the amyloid-β (Aβ) peptide, where Aβ aggregation is a central event in the etiology of the disease. Delineating Zn(II) binding properties to Aβ is thus a prerequisite to better grasp its potential role in AD. Because of (i) the flexibility of the Aβ peptide, (ii) the multiplicity of anchoring sites, and (iii) the silent nature of the Zn(II) ion in most classical spectroscopies, this is a difficult task. To overcome these difficulties, we have investigated the impact of peptide alterations (mutations, N-terminal acetylation) on the Zn(Aβ) X-ray absorption spectroscopy fingerprint and on the Zn(II)-induced modifications of the Aβ peptides' NMR signatures. We propose a tetrahedrally bound Zn(II) ion, in which the coordination sphere is made by two His residues and two carboxylate side chains. Equilibria between equivalent ligands for one Zn(II) binding position have also been observed, the predominant site being made by the side chains of His6, His13 or His14, Glu11, and Asp1 or Glu3 or Asp7, with a slight preference for Asp1.
Collapse
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, F-31077 Toulouse Cedex 4, France
| | - Amandine Conte-Daban
- CNRS, LCC (Laboratoire de Chimie de Coordination) , 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France.,Université de Toulouse , UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Stéphanie 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
| | - Fabrice Collin
- CNRS, LCC (Laboratoire de Chimie de Coordination) , 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France.,Université de Toulouse , UPS, INPT, F-31077 Toulouse Cedex 4, France.,Université de Toulouse , UPS, UMR 152 PHARMA-DEV, Université Toulouse 3, and Institut de Recherche pour le Développement (IRD), UMR 152 PHARMA-DEV, F-31062 Toulouse Cedex 09, France
| | - Isabelle Kieffer
- Observatoire des Sciences de l'Univers de Grenoble (OSUG) , CNRS UMS 832, 414 Rue de la Piscine, 38400 Saint Martin d'Hères, France.,BM30B/FAME, ESRF, The European Synchrotron , 71 Avenue des Martyrs, 38000 Grenoble, 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
| | - 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, F-31077 Toulouse Cedex 4, 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, F-31077 Toulouse Cedex 4, France
| |
Collapse
|
221
|
Mason RJ, Paskins AR, Dalton CF, Smith DP. Copper Binding and Subsequent Aggregation of α-Synuclein Are Modulated by N-Terminal Acetylation and Ablated by the H50Q Missense Mutation. Biochemistry 2016; 55:4737-41. [PMID: 27517125 DOI: 10.1021/acs.biochem.6b00708] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The Parkinson's disease-associated protein α-synuclein exhibits significant conformational heterogeneity. Bacterially expressed α-synuclein is known to bind to copper, resulting in the formation of aggregation-prone compact conformations. However, in vivo, α-synuclein undergoes acetylation at its N-terminus. Here the effect of this modification and the pathological H50Q mutation on copper binding and subsequent conformational transitions were investigated by electrospray ionization-ion mobility spectrometry-mass spectrometry. We demonstrate that acetylation perturbs the ability of α-synuclein to bind copper and that the H50Q missense mutation in the presence of N-terminal acetylation prevents copper binding. These modifications and mutations prevent the formation of the most compact conformations and inhibit copper-induced aggregation.
Collapse
Affiliation(s)
- Rebecca J Mason
- Biomolecular Sciences Research Centre, Sheffield Hallam University , Sheffield S1 1WB, U.K
| | - Aimee R Paskins
- Biomolecular Sciences Research Centre, Sheffield Hallam University , Sheffield S1 1WB, U.K
| | - Caroline F Dalton
- Biomolecular Sciences Research Centre, Sheffield Hallam University , Sheffield S1 1WB, U.K
| | - David P Smith
- Biomolecular Sciences Research Centre, Sheffield Hallam University , Sheffield S1 1WB, U.K
| |
Collapse
|
222
|
Metals in Alzheimer’s and Parkinson’s Disease: Relevance to Dementia with Lewy Bodies. J Mol Neurosci 2016; 60:279-288. [DOI: 10.1007/s12031-016-0809-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 07/28/2016] [Indexed: 12/13/2022]
|
223
|
Crăciun EC, Bjørklund G, Tinkov AA, Urbina MA, Skalny AV, Rad F, Dronca E. Evaluation of whole blood zinc and copper levels in children with autism spectrum disorder. Metab Brain Dis 2016; 31:887-90. [PMID: 27059237 DOI: 10.1007/s11011-016-9823-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 04/05/2016] [Indexed: 12/30/2022]
Abstract
Zinc (Zn) and copper (Cu) are important trace elements for cognitive development and normal neurological functioning. Autism spectrum disorder (ASD) is a common neurological disorder, which has previously been associated with the levels of some trace elements in the blood. However, clinical data regarding the potential implication of Zn and Cu in patients with ASD are still insufficient. Therefore, the aim of the present study was to investigate the whole blood levels of Zn and Cu in a cohort of 28 children with ASD and 28 age- and gender-matched healthy controls. Whole blood Zn and Cu levels were assessed using inductively-coupled plasma-sector field mass spectrometry. Both in the control and in the ASD group, the values of whole blood Cu and Zn were characterized by a Gaussian distribution. The results indicate that the ASD children were characterized by ~10 % (p = 0.005) and ~12 % (p = 0.015) lower levels of whole blood Zn and Zn/Cu ratio, respectively, in comparison to controls. No significant difference in whole blood Cu was observed. However, Cu/Zn ratio was ~15 % (p = 0.008) higher in ASD children than that in the control ones. The results of the present study may be indicative of Zn deficiency in ASD children. Taking into account Zn-mediated up-regulation of metallothionein (MT) gene expression, these findings suggest a possible alteration in the functioning of the neuroprotective MT system. However, further investigations are required to test this hypothesis.
Collapse
Affiliation(s)
- Elena Cristina Crăciun
- Pharmaceutical Biochemistry and Clinical Laboratory Department, Faculty of Pharmacy, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Toften 24, 8610, Mo i Rana, Norway.
| | - Alexey A Tinkov
- Department of Biochemistry, Orenburg State Medical University, Orenburg, Russia
- Orenburg State University, Orenburg, Russia
- All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Mauricio A Urbina
- Department of Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
- Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
| | - Anatoly V Skalny
- Orenburg State University, Orenburg, Russia
- All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Florina Rad
- Child and Adolescent Psychiatry Department, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Eleonora Dronca
- Department of Molecular Sciences, Faculty of Medicine, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| |
Collapse
|
224
|
Kepp KP. Alzheimer's disease due to loss of function: A new synthesis of the available data. Prog Neurobiol 2016; 143:36-60. [PMID: 27327400 DOI: 10.1016/j.pneurobio.2016.06.004] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 06/10/2016] [Accepted: 06/11/2016] [Indexed: 12/11/2022]
Abstract
Alzheimer's Disease (AD) is a highly complex disease involving a broad range of clinical, cellular, and biochemical manifestations that are currently not understood in combination. This has led to many views of AD, e.g. the amyloid, tau, presenilin, oxidative stress, and metal hypotheses. The amyloid hypothesis has dominated the field with its assumption that buildup of pathogenic β-amyloid (Aβ) peptide causes disease. This paradigm has been criticized, yet most data suggest that Aβ plays a key role in the disease. Here, a new loss-of-function hypothesis is synthesized that accounts for the anomalies of the amyloid hypothesis, e.g. the curious pathogenicity of the Aβ42/Aβ40 ratio, the loss of Aβ caused by presenilin mutation, the mixed phenotypes of APP mutations, the poor clinical-biochemical correlations for genetic variant carriers, and the failure of Aβ reducing drugs. The amyloid-loss view accounts for recent findings on the structure and chemical features of Aβ variants and their coupling to human patient data. The lost normal function of APP/Aβ is argued to be metal transport across neuronal membranes, a view with no apparent anomalies and substantially more explanatory power than the gain-of-function amyloid hypothesis. In the loss-of-function scenario, the central event of Aβ aggregation is interpreted as a loss of soluble, functional monomer Aβ rather than toxic overload of oligomers. Accordingly, new research models and treatment strategies should focus on remediation of the functional amyloid balance, rather than strict containment of Aβ, which, for reasons rationalized in this review, has failed clinically.
Collapse
Affiliation(s)
- Kasper P Kepp
- Technical University of Denmark, DTU Chemistry, DK-2800 Kongens Lyngby, Denmark.
| |
Collapse
|
225
|
Dell'Acqua S, Pirota V, Anzani C, Rocco MM, Nicolis S, Valensin D, Monzani E, Casella L. Reactivity of copper-α-synuclein peptide complexes relevant to Parkinson's disease. Metallomics 2016; 7:1091-102. [PMID: 25865825 DOI: 10.1039/c4mt00345d] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by the presence of abnormal α-synuclein (αSyn) deposits in the brain. Alterations in metal homeostasis and metal-induced oxidative stress may play a crucial role in the aggregation of αSyn and, consequently, in the pathogenesis of PD. We have therefore investigated the capability of copper-αSyn6 and copper-αSyn15 peptide complexes, with the 1-6 and 1-15 terminal fragments of the protein, to promote redox reactions that can be harmful to other cellular components. The pseudo-tyrosinase activity of copper-αSyn complexes against catecholic (di-tert-butylcatechol (DTBCH2), 4-methylcatechol (4-MC)) and phenolic (phenol) substrates is lower compared to that of free copper(II). In particular, the rates (kcat) of DTBCH2 catalytic oxidation are 0.030 s(-1) and 0.009 s(-1) for the reaction promoted by free copper(II) and [Cu(2+)-αSyn15], respectively. On the other hand, HPLC/ESI-MS analysis of solutions of αSyn15 incubated with copper(II) and 4-MC showed that αSyn is competitively oxidized with remarkable formation of sulfoxide at Met1 and Met5 residues. Moreover, the sulfoxidation of methionine residues, which is related to the aggregation of αSyn, also occurs on peptides not directly bound to copper, indicating that external αSyn can also be oxidized by copper. Therefore, this study strengthens the hypothesis that copper plays an important role in oxidative damage of αSyn which is proposed to be strongly related to the etiology of PD.
Collapse
Affiliation(s)
- Simone Dell'Acqua
- Dipartimento di Chimica, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy.
| | | | | | | | | | | | | | | |
Collapse
|
226
|
New chrysin-functionalized silica-core shell magnetic nanoparticles for the magnetic solid phase extraction of copper ions from water samples. Talanta 2016; 148:191-9. [DOI: 10.1016/j.talanta.2015.10.062] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 10/21/2015] [Accepted: 10/22/2015] [Indexed: 11/19/2022]
|
227
|
Guo S, Lu S, Xu P, Ma Y, Zhao L, Zhao Y, Gu W, Xue M. Biomimetic synthesis of needle-like fluorescent calcium phosphate/carbon dot hybrid composites for cell labeling and copper ion detection. Dalton Trans 2016; 45:7665-71. [DOI: 10.1039/c6dt00395h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report a biomimetic method to synthesize needle-like calcium phosphate (CaP) using carbon dots (CDs) and sodium carboxymethylcellulose as dual templates. The CaP/CDs were capable of cell labeling and selective detection of copper ions in drinking water.
Collapse
Affiliation(s)
- Shanshan Guo
- Department of Pharmacology
- School of Basic Medical Sciences
- Capital Medical University
- Beijing 100069
- China
| | - Shousi Lu
- Department of Pharmacology
- School of Basic Medical Sciences
- Capital Medical University
- Beijing 100069
- China
| | - Pingxiang Xu
- Department of Pharmacology
- School of Basic Medical Sciences
- Capital Medical University
- Beijing 100069
- China
| | - Yi Ma
- Department of Pharmacology
- School of Basic Medical Sciences
- Capital Medical University
- Beijing 100069
- China
| | - Liang Zhao
- Department of Pharmacology
- School of Basic Medical Sciences
- Capital Medical University
- Beijing 100069
- China
| | - Yuming Zhao
- Department of Pharmacology
- School of Basic Medical Sciences
- Capital Medical University
- Beijing 100069
- China
| | - Wei Gu
- Department of Chemical Biology
- School of Chemical Biology and Pharmaceutical Sciences
- Capital Medical University
- Beijing 100069
- China
| | - Ming Xue
- Department of Pharmacology
- School of Basic Medical Sciences
- Capital Medical University
- Beijing 100069
- China
| |
Collapse
|
228
|
Wojciechowski M, Gómez-Sicilia À, Carrión-Vázquez M, Cieplak M. Unfolding knots by proteasome-like systems: simulations of the behaviour of folded and neurotoxic proteins. MOLECULAR BIOSYSTEMS 2016; 12:2700-12. [DOI: 10.1039/c6mb00214e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Knots in proteins have been proposed to resist proteasomal degradation, thought in turn to be related to neurodegenerative diseases such as Huntington.
Collapse
Affiliation(s)
| | - Àngel Gómez-Sicilia
- Instituto Cajal
- Consejo Superior de Investigaciones Científicas
- (CSIC)
- 28002 Madrid
- Spain
| | | | - Marek Cieplak
- Institute of Physics
- Polish Academy of Sciences
- PL-02668 Warsaw
- Poland
| |
Collapse
|
229
|
Janakipriya S, Tamilmani S, Thennarasu S. A novel 2-(2′-aminophenyl)benzothiazole derivative displays ESIPT and permits selective detection of Zn2+ ions: experimental and theoretical studies. RSC Adv 2016. [DOI: 10.1039/c6ra09713h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Synthesis of a novel 2-(2′-aminophenyl)benzothiazole based probe (1) and demonstration of excited state intramolecular proton transfer (ESIPT) with a large Stokes shift (∼246 nm) are presented.
Collapse
Affiliation(s)
- Subramaniyan Janakipriya
- Organic and Bioorganic Chemistry Laboratory
- CSIR-Central Leather Research Institute
- Chennai-600 020
- India
| | | | - Sathiah Thennarasu
- Organic and Bioorganic Chemistry Laboratory
- CSIR-Central Leather Research Institute
- Chennai-600 020
- India
| |
Collapse
|
230
|
Torres JB, Andreozzi EM, Dunn JT, Siddique M, Szanda I, Howlett DR, Sunassee K, Blowera PJ. PET Imaging of Copper Trafficking in a Mouse Model of Alzheimer Disease. J Nucl Med 2016; 57:109-14. [PMID: 26449834 PMCID: PMC6207347 DOI: 10.2967/jnumed.115.162370] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 09/28/2015] [Indexed: 01/23/2023] Open
Abstract
UNLABELLED Alzheimer disease (AD) is a fatal neurodegenerative disorder characterized by progressive neuronal loss and cognitive decline. The lack of reliable and objective diagnostic markers for AD hampers early disease detection and treatment. Growing evidence supports the existence of a dysregulation in brain copper trafficking in AD. The aim of this study was to investigate brain copper trafficking in a transgenic mouse model of AD by PET imaging with (64)Cu, to determine its potential as a diagnostic biomarker of the disorder. METHODS Brain copper trafficking was evaluated in 6- to 8-mo-old TASTPM transgenic mice and age-matched wild-type controls using the (64)Cu bis(thiosemicarbazone) complex (64)Cu-GTSM (glyoxalbis(N(4)-methyl-3-thiosemicarbazonato) copper(II)), which crosses the blood-brain barrier and releases (64)Cu bioreductively into cells. Animals were intravenously injected with (64)Cu-GTSM and imaged at 0-30 min and 24-25 h after injection. The images were analyzed by atlas-based quantification and texture analysis. Regional distribution of (64)Cu in the brain 24 h after injection was also evaluated via ex vivo autoradiography and compared with amyloid-β plaque deposition in TASTPM mice. RESULTS Compared with controls, in TASTPM mice PET image analysis demonstrated significantly increased (by a factor of ~1.3) brain concentration of (64)Cu at 30 min (P < 0.01) and 24 h (P < 0.05) after injection of the tracer and faster (by a factor of ~5) (64)Cu clearance from the brain (P < 0.01). Atlas-based quantification and texture analysis revealed significant differences in regional brain uptake of (64)Cu and PET image heterogeneity between the 2 groups of mice. Ex vivo autoradiography showed that regional brain distribution of (64)Cu at 24 h after injection did not correlate with amyloid-β plaque distribution in TASTPM mice. CONCLUSION The trafficking of (64)Cu in the brain after administration of (64)Cu-GTSM is significantly altered by AD-like pathology in the TASTPM mouse model, suggesting that (64)Cu-GTSM PET imaging warrants clinical evaluation as a diagnostic tool for AD and possibly other neurodegenerative disorders.
Collapse
Affiliation(s)
- Julia Baguña Torres
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, St. Thomas’ Hospital, London, SE1 7EH, UK
| | - Erica M. Andreozzi
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, St. Thomas’ Hospital, London, SE1 7EH, UK
| | - Joel T. Dunn
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, St. Thomas’ Hospital, London, SE1 7EH, UK
| | - Muhammad Siddique
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, St. Thomas’ Hospital, London, SE1 7EH, UK
| | - Istvan Szanda
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, St. Thomas’ Hospital, London, SE1 7EH, UK
| | - David R. Howlett
- King’s College London, Wolfson Centre for Age-Related Diseases, Hodgkin Building, Guy’s Campus, London, SE1 1UL, UK
| | - Kavitha Sunassee
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, St. Thomas’ Hospital, London, SE1 7EH, UK
| | - Philip J. Blowera
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, St. Thomas’ Hospital, London, SE1 7EH, UK
| |
Collapse
|
231
|
Rowińska-Żyrek M. Coordination of Zn2+ and Cu2+ to the membrane disrupting fragment of amylin. Dalton Trans 2016; 45:8099-106. [DOI: 10.1039/c6dt00628k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amylin, a small peptide co-secreted from pancreatic β-cells together with insulin, is one of the hallmarks of type II diabetes.
Collapse
|
232
|
Raics M, Lihi N, Laskai A, Kállay C, Várnagy K, Sóvágó I. Nickel(ii), zinc(ii) and cadmium(ii) complexes of hexapeptides containing separate histidyl and cysteinyl binding sites. NEW J CHEM 2016. [DOI: 10.1039/c6nj00081a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hexapeptides containing separate histidyl and cysteinyl residues have outstanding metal binding ability but the binding sites of peptides reveal a significant specificity.
Collapse
Affiliation(s)
- Mária Raics
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Debrecen
- Hungary
| | - Norbert Lihi
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Debrecen
- Hungary
| | - Aliz Laskai
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Debrecen
- Hungary
| | - Csilla Kállay
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms Research Group
- University of Debrecen
- Debrecen
- Hungary
| | - Katalin Várnagy
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Debrecen
- Hungary
| | - Imre Sóvágó
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Debrecen
- Hungary
| |
Collapse
|
233
|
Barkhuizen M, Anderson DG, Grobler AF. Advances in GBA-associated Parkinson's disease--Pathology, presentation and therapies. Neurochem Int 2015; 93:6-25. [PMID: 26743617 DOI: 10.1016/j.neuint.2015.12.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 10/29/2015] [Accepted: 12/04/2015] [Indexed: 12/27/2022]
Abstract
GBA mutations are to date the most common genetic risk factor for Parkinson's disease. The GBA gene encodes the lysomal hydrolase glucocerebrosidase. Whilst bi-allelic GBA mutations cause Gaucher disease, both mono- and bi-allelic mutations confer risk for Parkinson's disease. Clinically, Parkinson's disease patients with GBA mutations resemble idiopathic Parkinson's disease patients. However, these patients have a modest reduction in age-of-onset of disease and a greater incidence of cognitive decline. In some cases, GBA mutations are also responsible for familial Parkinson's disease. The accumulation of α-synuclein into Lewy bodies is the central neuropathological hallmark of Parkinson's disease. Pathologic GBA mutations reduce enzymatic function. A reduction in glucocerebrosidase function increases α-synuclein levels and propagation, which in turn inhibits glucocerebrosidase in a feed-forward cascade. This cascade is central to the neuropathology of GBA-associated Parkinson's disease. The lysosomal integral membrane protein type-2 is necessary for normal glucocerebrosidase function. Glucocerebrosidase dysfunction also increases in the accumulation of β-amyloid and amyloid-precursor protein, oxidative stress, neuronal susceptibility to metal ions, microglial and immune activation. These factors contribute to neuronal death. The Mendelian Parkinson's disease genes, Parkin and ATP13A2, intersect with glucocerebrosidase. These factors sketch a complex circuit of GBA-associated neuropathology. To clinically interfere with this circuit, central glucocerebrosidase function must be improved. Strategies based on reducing breakdown of mutant glucocerebrosidase and increasing the fraction that reaches the lysosome has shown promise. Breakdown can be reduced by interfering with the ability of heat-shock proteins to recognize mutant glucocerebrosidase. This underlies the therapeutic efficacy of certain pharmacological chaperones and histone deacetylase inhibitors. These therapies are promising for Parkinson's disease, regardless of mutation status. Recently, there has been a boom in studies investigating the role of glucocerebrosidase in the pathology of Parkinson's disease. This merits a comprehensive review of the current cell biological processes and pathological pictures involving Parkinson's disease associated with GBA mutations.
Collapse
Affiliation(s)
- Melinda Barkhuizen
- DST/NWU Preclinical Drug Development Platform, North-West University, Potchefstroom, 2520, South Africa; Department of Paediatrics, School for Mental Health and Neuroscience, Maastricht University, Maastricht, 6229, The Netherlands.
| | - David G Anderson
- Department of Neurology, Witwatersrand University Donald Gordon Medical Centre, Parktown, Johannesburg, 2193, South Africa
| | - Anne F Grobler
- DST/NWU Preclinical Drug Development Platform, North-West University, Potchefstroom, 2520, South Africa
| |
Collapse
|
234
|
On the generation of OH(·) radical species from H2O2 by Cu(I) amyloid beta peptide model complexes: a DFT investigation. J Biol Inorg Chem 2015; 21:197-212. [PMID: 26711660 DOI: 10.1007/s00775-015-1322-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 12/08/2015] [Indexed: 12/27/2022]
Abstract
According to different studies, the interaction between amyloid β-peptide (Aβ) and copper ions could yield radical oxygen species production, in particular the highly toxic hydroxyl radical OH(·) that is suspected to contribute to Alzheimer's disease pathogenesis. Despite intensive experimental and computational studies, the nature of the interaction between copper and Aβ peptide, as well as the redox reactivity of the system, are still matter of debate. It was proposed that in Cu(II) → Cu(I) reduction the complex Cu(II)-Aβ could follow a multi-step conformational change with redox active intermediates that may be responsible for OH(·) radical production from H2O2 through a Fenton-like process. The purpose of this work is to evaluate, using ab initio Density Functional Theory computations, the reactivity of different Cu(I)-Aβ coordination modes proposed in the literature, in terms of OH(·) production. For each coordination model, we considered the corresponding H2O2 adduct and performed a potential energy surface scan along the reaction coordinate of O-O bond dissociation of the peroxide, resulting in the production of OH(·) radical, obtaining reaction profiles for the evaluation of the energetic of the process. This procedure allowed us to confirm the hypothesis according to which the most populated Cu(I)-Aβ two-histidine coordination is not able to perform efficiently H2O2 reduction, while a less populated three-coordinated form would be responsible for the OH(·) production. We show that coordination modes featuring a third nitrogen containing electron-donor ligand (an imidazole ring of an histidine residue is slightly favored over the N-terminal amine group) are more active towards H2O2 reduction.
Collapse
|
235
|
Chen C, Kong X, Lee IS. Modification of surface/neuron interfaces for neural cell-type specific responses: a review. ACTA ACUST UNITED AC 2015; 11:014108. [PMID: 26694886 DOI: 10.1088/1748-6041/11/1/014108] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Surface/neuron interfaces have played an important role in neural repair including neural prostheses and tissue engineered scaffolds. This comprehensive literature review covers recent studies on the modification of surface/neuron interfaces. These interfaces are identified in cases both where the surfaces of substrates or scaffolds were in direct contact with cells and where the surfaces were modified to facilitate cell adhesion and controlling cell-type specific responses. Different sources of cells for neural repair are described, such as pheochromocytoma neuronal-like cell, neural stem cell (NSC), embryonic stem cell (ESC), mesenchymal stem cell (MSC) and induced pluripotent stem cell (iPS). Commonly modified methods are discussed including patterned surfaces at micro- or nano-scale, surface modification with conducting coatings, and functionalized surfaces with immobilized bioactive molecules. These approaches to control cell-type specific responses have enormous potential implications in neural repair.
Collapse
Affiliation(s)
- Cen Chen
- Bio-X Center, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | | | | |
Collapse
|
236
|
De Santis E, Minicozzi V, Proux O, Rossi G, Silva KI, Lawless MJ, Stellato F, Saxena S, Morante S. Cu(II)-Zn(II) Cross-Modulation in Amyloid-Beta Peptide Binding: An X-ray Absorption Spectroscopy Study. J Phys Chem B 2015; 119:15813-20. [PMID: 26646533 DOI: 10.1021/acs.jpcb.5b10264] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work we analyze at a structural level the mechanism by which Cu(II) and Zn(II) ions compete for binding to the Aβ peptides that is involved in the etiology of Alzheimer's disease. We collected X-ray absorption spectroscopy data on samples containing Aβ with Cu and Zn at different concentration ratios. We show that the order in which metals are added to the peptide solution matters and that, when Zn is added first, it prevents Cu from binding. On the contrary, when Cu is added first, it does not (completely) prevent Zn binding to Aβ peptides. Our analysis suggests that Cu and Zn ions are coordinated to different numbers of histidine residues depending on the [ion]:[peptide] concentration ratio.
Collapse
Affiliation(s)
- Emiliano De Santis
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy
| | - Velia Minicozzi
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy
| | - Olivier Proux
- Observatoire des Sciences de l'Univers de Grenoble , Grenoble 38400, France
| | - Giancarlo Rossi
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy.,Centro Fermi , Rome 00184, Italy
| | - K Ishara Silva
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Matthew J Lawless
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Francesco Stellato
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy
| | - Sunil Saxena
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Silvia Morante
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy
| |
Collapse
|
237
|
Jin H, Goyal P, Das AK, Gaus M, Meuwly M, Cui Q. Copper Oxidation/Reduction in Water and Protein: Studies with DFTB3/MM and VALBOND Molecular Dynamics Simulations. J Phys Chem B 2015; 120:1894-910. [PMID: 26624804 DOI: 10.1021/acs.jpcb.5b09656] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We apply two recently developed computational methods, DFTB3 and VALBOND, to study copper oxidation/reduction processes in solution and protein. The properties of interest include the coordination structure of copper in different oxidation states in water or in a protein (plastocyanin) active site, the reduction potential of the copper ion in different environments, and the environmental response to copper oxidation. The DFTB3/MM and VALBOND simulation results are compared to DFT/MM simulations and experimental results whenever possible. For a copper ion in aqueous solution, DFTB3/MM results are generally close to B3LYP/MM with a medium basis, including both solvation structure and reduction potential for Cu(II); for Cu(I), however, DFTB3/MM finds a two-water coordination, similar to previous Born-Oppenheimer molecular dynamics simulations using BLYP and HSE, whereas B3LYP/MM leads to a tetrahedron coordination. For a tetraammonia copper complex in aqueous solution, VALBOND and DFTB3/MM are consistent in terms of both structural and dynamical properties of solvent near copper for both oxidation states. For copper reduction in plastocyanin, DFTB3/MM simulations capture the key properties of the active site, and the computed reduction potential and reorganization energy are in fair agreement with experiment, especially when the periodic boundary condition is used. Overall, the study supports the value of VALBOND and DFTB3(/MM) for the analysis of fundamental copper redox chemistry in water and protein, and the results also help highlight areas where further improvements in these methods are desirable.
Collapse
Affiliation(s)
- Haiyun Jin
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Puja Goyal
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Akshaya Kumar Das
- Department of Chemistry, University of Basel , Klingelbergstrasse 80, 4056 Basel, Switzerland
| | - Michael Gaus
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Markus Meuwly
- Department of Chemistry, University of Basel , Klingelbergstrasse 80, 4056 Basel, Switzerland
| | - Qiang Cui
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| |
Collapse
|
238
|
Lanza V, D'Agata R, Iacono G, Bellia F, Spoto G, Vecchio G. Cyclam glycoconjugates as lectin ligands and protective agents of metal-induced amyloid aggregation. J Inorg Biochem 2015; 153:377-382. [DOI: 10.1016/j.jinorgbio.2015.06.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 06/15/2015] [Accepted: 06/15/2015] [Indexed: 01/17/2023]
|
239
|
Xu L, Tu S, Chen C, Zhao J, Zhang Y, Zhou P. Effect of EGCG On Fe(III)-induced conformational transition of silk fibroin, a model of protein related to neurodegenerative diseases. Biopolymers 2015; 105:100-107. [DOI: 10.1002/bip.22752] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 09/30/2015] [Accepted: 10/09/2015] [Indexed: 01/13/2023]
Affiliation(s)
- Lihui Xu
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| | - Sidong Tu
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| | - Congheng Chen
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| | - Juan Zhao
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| | - Yuan Zhang
- Department of Medicine; St Vincent's Hospital, the University of Melbourne; Fitzroy Victoria 3065 Australia
| | - Ping Zhou
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| |
Collapse
|
240
|
Muthuraj B, Layek S, Balaji SN, Trivedi V, Iyer PK. Multiple function fluorescein probe performs metal chelation, disaggregation, and modulation of aggregated Aβ and Aβ-Cu complex. ACS Chem Neurosci 2015; 6:1880-91. [PMID: 26332658 DOI: 10.1021/acschemneuro.5b00205] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
An exceptional probe comprising indole-3-carboxaldehyde fluorescein hydrazone (FI) performs multiple tasks, namely, disaggregating amyloid β (Aβ) aggregates in different biomarker environments such as cerebrospinal fluid (CSF), Aβ1-40 fibrils, β-amyloid lysozyme aggregates (LA), and U87 MG human astrocyte cells. Additionally, the probe FI binds with Cu(2+) ions selectively, disrupts the Aβ aggregates that vary from few nanometers to micrometers, and prevents their reaggregation, thereby performing disaggregation and modulation of amyloid-β in the presence as well as absence of Cu(2+) ion. The excellent selectivity of probe FI for Cu(2+) was effectively utilized to modulate the assembly of metal-induced Aβ aggregates by metal chelation with the "turn-on" fluorescence via spirolactam ring opening of FI as well as the metal-free Aβ fibrils by noncovalent interactions. These results confirm that FI has exceptional ability to perform multifaceted tasks such as metal chelation in intracellular conditions using Aβ lysozyme aggregates in cellular environments by the disruption of β-sheet rich Aβ fibrils into disaggregated forms. Subsequently, it was confirmed that FI had the ability to cross the blood-brain barrier and it also modulated the metal induced Aβ fibrils in cellular environments by "turn-on" fluorescence, which are the most vital properties of a probe or a therapeutic agent. Furthermore, the morphology changes were examined by atomic force microscopy (AFM), polarizable optical microscopy (POM), fluorescence microscopy, and dynamic light scattering (DLS) studies. These results provide very valuable clues on the Aβ (CSF Aβ fibrils, Aβ1-40 fibrils, β-amyloid lysozyme aggregates) disaggregation behavior via in vitro studies, which constitute the first insights into intracellular disaggregation of Aβ by "turn-on" method thereby influencing amyloidogenesis.
Collapse
Affiliation(s)
- B. Muthuraj
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
| | - Sourav Layek
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
| | - S. N. Balaji
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
| | - Vishal Trivedi
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
| | - Parameswar Krishnan Iyer
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
| |
Collapse
|
241
|
Delpuech JJ, Selmeczi K, Gizzi P, Henry B. Long-range magnetic non-equivalence of methylene protons and pK's of amide bonds in peptides. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
242
|
Regueiro-Figueroa M, Gündüz S, Patinec V, Logothetis NK, Esteban-Gómez D, Tripier R, Angelovski G, Platas-Iglesias C. Gd(3+)-Based Magnetic Resonance Imaging Contrast Agent Responsive to Zn(2+). Inorg Chem 2015; 54:10342-50. [PMID: 26468992 DOI: 10.1021/acs.inorgchem.5b01719] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We report the heteroditopic ligand H5L, which contains a DO3A unit for Gd(3+) complexation connected to an NO2A moiety through a N-propylacetamide linker. The synthesis of the ligand followed a convergent route that involved the preparation of 1,4-bis(tert-butoxycarbonylmethyl)-1,4,7-triazacyclononane following the orthoamide strategy. The luminescence lifetimes of the Tb((5)D4) excited state measured for the TbL complex point to the absence of coordinated water molecules. Density functional theory calculations and (1)H NMR studies indicate that the EuL complex presents a square antiprismatic coordination in aqueous solution, where eight coordination is provided by the seven donor atoms of the DO3A unit and the amide oxygen atom of the N-propylacetamide linker. Addition of Zn(2+) to aqueous solutions of the TbL complex provokes a decrease of the emission intensity as the emission lifetime becomes shorter, which is a consequence of the coordination of a water molecule to the Tb(3+) ion upon Zn(2+) binding to the NO2A moiety. The relaxivity of the GdL complex recorded at 7 T (25 °C) increases by almost 150% in the presence of 1 equiv of Zn(2+), while Ca(2+) and Mg(2+) induced very small relaxivity changes. In vitro magnetic resonance imaging experiments confirmed the ability of GdL to provide response to the presence of Zn(2+).
Collapse
Affiliation(s)
- Martín Regueiro-Figueroa
- Grupo QUICOOR, Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química Fundamental, Universidade da Coruña , Campus da Zapateira, Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Serhat Gündüz
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics , Spemannstr. 41, 72076 Tübingen, Germany
| | - Véronique Patinec
- UFR des Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521 , 6 avenue Victor le Gorgeu, C.S. 93837, 29238 BREST Cedex 3, France
| | - Nikos K Logothetis
- Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics , Tübingen, Germany.,Department of Imaging Science and Biomedical Engineering, University of Manchester , Manchester, U.K
| | - David Esteban-Gómez
- Grupo QUICOOR, Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química Fundamental, Universidade da Coruña , Campus da Zapateira, Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Raphaël Tripier
- UFR des Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521 , 6 avenue Victor le Gorgeu, C.S. 93837, 29238 BREST Cedex 3, France
| | - Goran Angelovski
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics , Spemannstr. 41, 72076 Tübingen, Germany
| | - Carlos Platas-Iglesias
- Grupo QUICOOR, Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química Fundamental, Universidade da Coruña , Campus da Zapateira, Rúa da Fraga 10, 15008 A Coruña, Spain
| |
Collapse
|
243
|
Solovyev ND. Importance of selenium and selenoprotein for brain function: From antioxidant protection to neuronal signalling. J Inorg Biochem 2015; 153:1-12. [PMID: 26398431 DOI: 10.1016/j.jinorgbio.2015.09.003] [Citation(s) in RCA: 172] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 09/03/2015] [Accepted: 09/09/2015] [Indexed: 12/21/2022]
Abstract
Multiple biological functions of selenium manifest themselves mainly via 25 selenoproteins that have selenocysteine at their active centre. Selenium is vital for the brain and seems to participate in the pathology of disorders such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis and epilepsy. Since selenium was shown to be involved in diverse functions of the central nervous system, such as motor performance, coordination, memory and cognition, a possible role of selenium and selenoproteins in brain signalling pathways may be assumed. The aim of the present review is to analyse possible relations between selenium and neurotransmission. Selenoproteins seem to be of special importance in the development and functioning of GABAergic (GABA, γ-aminobutyric acid) parvalbumin positive interneurons of the cerebral cortex and hippocampus. Dopamine pathway might be also selenium dependent as selenium shows neuroprotection in the nigrostriatal pathway and also exerts toxicity towards dopaminergic neurons under higher concentrations. Recent findings also point to acetylcholine neurotransmission involvement. The role of selenium and selenoproteins in neurotransmission might not only be limited to their antioxidant properties but also to inflammation, influencing protein phosphorylation and ion channels, alteration of calcium homeostasis and brain cholesterol metabolism. Moreover, a direct signalling function was proposed for selenoprotein P through interaction with post-synaptic apoliprotein E receptors 2 (ApoER2).
Collapse
Affiliation(s)
- Nikolay D Solovyev
- Institute of Chemistry, St. Petersburg State University, St. Petersburg 198504, Russian Federation.
| |
Collapse
|
244
|
Kostyukevich Y, Kononikhin A, Popov I, Indeykina M, Kozin SA, Makarov AA, Nikolaev E. Supermetallization of peptides and proteins during electrospray ionization. JOURNAL OF MASS SPECTROMETRY : JMS 2015; 50:1079-1087. [PMID: 28338253 DOI: 10.1002/jms.3622] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 04/26/2015] [Accepted: 05/26/2015] [Indexed: 06/06/2023]
Abstract
The formation of metal-peptide complexes during electrospray ionization (ESI) is a widely known phenomenon and is often considered to be undesirable. Such effect considerably limits the use of ESI mass spectrometry for the investigation of biologically relevant metal-peptide compounds that are present in the solution and play critical roles in many bioprocesses such as progression of neurodegenerative diseases. In the article, it is demonstrated that under specific conditions such as high temperature of the desolvating capillary, an interesting effect, which can be called as 'supermetallization', occurs. Using a model peptide Αβ amyloid domain 1-16, it was observed that an increase in the temperature of the desolvating capillary results in multiple substitutions of hydrogen atoms by Zn atoms in this peptide. At high temperatures (T ~ 400 °C), up to 11 zinc atoms can be covalently bound to (1-16) Αβ. It was observed that supermetallization of (1-16) Αβ depends on the solvent composition and pH. Supermetallization was also demonstrated for proteins, such as ubiquitin and cytochrome C. That proves that the supermetallization is a general phenomenon for peptides and proteins. For the structural investigation of supermetallized complexes, electron-capture dissociation (ECD) fragmentation was applied. The effect of hydrogen rearranging during ECD was observed. In addition, quantum chemical calculations were used to estimate the possible structures of different supermetallized complexes. These results allow a more deep understanding of the limitations of the use of ESI mass spectrometry for the investigation of biologically relevant metal-peptide complexes. Copyright © 2015 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Yury Kostyukevich
- Skolkovo Institute of Science and Technology, Novaya St., 100, Skolkovo, 143025, Russia
- Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Leninskij pr. 38 k.2, 119334, Moscow, Russia
- Moscow Institute of Physics and Technology, 141700 Dolgoprudnyi, Moscow, Russia
| | - Alexey Kononikhin
- Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Leninskij pr. 38 k.2, 119334, Moscow, Russia
- Moscow Institute of Physics and Technology, 141700 Dolgoprudnyi, Moscow, Russia
| | - Igor Popov
- Emanuel Institute for Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, 119334, Moscow, Russia
- Moscow Institute of Physics and Technology, 141700 Dolgoprudnyi, Moscow, Russia
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Maria Indeykina
- Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Leninskij pr. 38 k.2, 119334, Moscow, Russia
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Sergey A Kozin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Alexander A Makarov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Eugene Nikolaev
- Skolkovo Institute of Science and Technology, Novaya St., 100, Skolkovo, 143025, Russia
- Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Leninskij pr. 38 k.2, 119334, Moscow, Russia
- Moscow Institute of Physics and Technology, 141700 Dolgoprudnyi, Moscow, Russia
| |
Collapse
|
245
|
Gaus M, Jin H, Demapan D, Christensen AS, Goyal P, Elstner M, Cui Q. DFTB3 Parametrization for Copper: The Importance of Orbital Angular Momentum Dependence of Hubbard Parameters. J Chem Theory Comput 2015; 11:4205-19. [PMID: 26575916 PMCID: PMC4827604 DOI: 10.1021/acs.jctc.5b00600] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the parametrization of a density functional tight binding method (DFTB3) for copper in a spin-polarized formulation. The parametrization is consistent with the framework of 3OB for main group elements (ONCHPS) and can be readily used for biological applications that involve copper proteins/peptides. The key to our parametrization is to introduce orbital angular momentum dependence of the Hubbard parameter and its charge derivative, thus allowing the 3d and 4s orbitals to adopt different sizes and responses to the change of charge state. The parametrization has been tested by applying to a fairly broad set of molecules of biological relevance, and the properties of interest include optimized geometries, ligand binding energies, and ligand proton affinities. Compared to the reference QM level (B3LYP/aug-cc-pVTZ, which is shown here to be similar to the B97-1 and CCSD(T) results, in terms of many properties of interest for a set of small copper containing molecules), our parametrization generally gives reliable structural properties for both Cu(I) and Cu(II) compounds, although several exceptions are also noted. For energetics, the results are more accurate for neutral ligands than for charged ligands, likely reflecting the minimal basis limitation of DFTB3; the results generally outperform NDDO based methods such as PM6 and even PBE with the 6-31+G(d,p) basis. For all ligand types, single-point B3LYP calculations at DFTB3 geometries give results very close (∼1-2 kcal/mol) to the reference B3LYP values, highlighting the consistency between DFTB3 and B3LYP structures. Possible further developments of the DFTB3 model for a better treatment of transition-metal ions are also discussed. In the current form, our first generation of DFTB3 copper model is expected to be particularly valuable as a method that drives sampling in systems that feature a dynamical copper binding site.
Collapse
Affiliation(s)
- Michael Gaus
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Haiyun Jin
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Darren Demapan
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Anders S Christensen
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Puja Goyal
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Marcus Elstner
- Institute of Physical Chemistry, Karlsruhe Institute of Technology , Kaiserstr. 12, 76131 Karlsruhe, Germany
| | - Qiang Cui
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| |
Collapse
|
246
|
Chu TT, Li QQ, Qiu T, Sun ZY, Hu ZW, Chen YX, Zhao YF, Li YM. Clearance of the intracellular high level of the tau protein directed by an artificial synthetic hydrolase. MOLECULAR BIOSYSTEMS 2015; 10:3081-5. [PMID: 25308803 DOI: 10.1039/c4mb00508b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Promoting clearance of intracellular excessive tau is a potential therapeutic strategy for treating Alzheimer's disease. In this work, we designed and synthesized a cyclen-hybrid artificial 'hydrolase' I1-Cu(II) to cleave tau in vitro. Furthermore, a cell-permeable 'hydrolase' I2-Cu(II), derived from I1-Cu(II), was also synthesized to cleave intracellular tau proteins.
Collapse
Affiliation(s)
- Ting-Ting Chu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | | | | | | | | | | | | | | |
Collapse
|
247
|
Dietary intake of iron, zinc, copper, and risk of Parkinson's disease: a meta-analysis. Neurol Sci 2015; 36:2269-75. [PMID: 26265293 DOI: 10.1007/s10072-015-2349-0] [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: 06/23/2015] [Accepted: 07/20/2015] [Indexed: 01/11/2023]
Abstract
Although some studies have reported the associations between specific metal element intake and risk of Parkinson's disease (PD), the associations between specific metal element intake such as iron intake and PD are still conflicted. We aimed to determine whether intake of iron, zinc, and copper increases/decreases the risk of PD. PubMed, Embase, Web of Knowledge, and Google Scholar were searched. We pooled the multivariate-adjusted relative risks (RRs) or odds ratios using random effects. Study quality was evaluated by the Newcastle-Ottawa Scale. Five studies including 126,507 individuals remained for inclusion, pooled RRs of Parkinson's disease for moderate dietary iron intake was 1.08 (95 % CI 0.61-1.93, P = 0.787), and for high dietary iron intake was (1.03, 95 % CI 0.83-1.30, P = 0.766), respectively. The pooled RRs of Parkinson's disease for the highest compared with the lowest dietary iron intake were 1.47 (95 % CI 1.17-1.85, P = 0.001) in western population and in males (RR = 1.43, 95 % CI 1.01-2.01, P = 0.041). The pooled RRs of Parkinson's disease for moderate or high intake of zinc, and copper were not statistically different (P > 0.05). PD increased by 18 % (RR 1.18, 95 % CI 1.02-1.37) for western population by every 10-mg/day increment in iron intake. Higher iron intake appears to be not associated with overall PD risk, but may be associated with risk of PD in western population. Sex may be a factor influencing PD risk for higher iron intake. However, further studies are still needed to confirm the sex-selective effects.
Collapse
|
248
|
Flores M, Olson TL, Wang D, Edwardraja S, Shinde S, Williams JC, Ghirlanda G, Allen JP. Copper Environment in Artificial Metalloproteins Probed by Electron Paramagnetic Resonance Spectroscopy. J Phys Chem B 2015. [DOI: 10.1021/acs.jpcb.5b04172] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Marco Flores
- Department
of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Tien L. Olson
- Department
of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Dong Wang
- Department
of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Selvakumar Edwardraja
- Department
of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Sandip Shinde
- Department
of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - JoAnn C. Williams
- Department
of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Giovanna Ghirlanda
- Department
of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - James P. Allen
- Department
of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
| |
Collapse
|
249
|
Bellingham SA, Guo B, Hill AF. The secret life of extracellular vesicles in metal homeostasis and neurodegeneration. Biol Cell 2015; 107:389-418. [PMID: 26032945 DOI: 10.1111/boc.201500030] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 05/27/2015] [Indexed: 12/21/2022]
Abstract
Biologically active metals such as copper, zinc and iron are fundamental for sustaining life in different organisms with the regulation of cellular metal homeostasis tightly controlled through proteins that coordinate metal uptake, efflux and detoxification. Many of the proteins involved in either uptake or efflux of metals are localised and function on the plasma membrane, traffic between intracellular compartments depending upon the cellular metal environment and can undergo recycling via the endosomal pathway. The biogenesis of exosomes also occurs within the endosomal system, with several major neurodegenerative disease proteins shown to be released in association with these vesicles, including the amyloid-β (Aβ) peptide in Alzheimer's disease and the infectious prion protein involved in Prion diseases. Aβ peptide and the prion protein also bind biologically active metals and are postulated to play important roles in metal homeostasis. In this review, we will discuss the role of extracellular vesicles in Alzheimer's and Prion diseases and explore their potential contribution to metal homeostasis.
Collapse
Affiliation(s)
- Shayne A Bellingham
- Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, VIC, Australia.,Bio21 Molecular Science and Biotechnology Institute, Parkville, VIC, Australia
| | - Belinda Guo
- Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, VIC, Australia.,Bio21 Molecular Science and Biotechnology Institute, Parkville, VIC, Australia
| | - Andrew F Hill
- Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, VIC, Australia.,Bio21 Molecular Science and Biotechnology Institute, Parkville, VIC, Australia.,Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, Australia
| |
Collapse
|
250
|
Pontecchiani F, Simonovsky E, Wieczorek R, Barbosa N, Rowinska-Zyrek M, Potocki S, Remelli M, Miller Y, Kozlowski H. The unusual binding mechanism of Cu(II) ions to the poly-histidyl domain of a peptide found in the venom of an African viper. Dalton Trans 2015; 43:16680-9. [PMID: 25266233 DOI: 10.1039/c4dt02257b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Copper complexes of a poly-His/poly-Gly peptide (EDDHHHHHHHHHGVGGGGGGGGGG-NH2), a natural component of a snake venom, were studied by means of both experimental (thermodynamic, spectroscopic and MS) techniques and molecular dynamics (MD) simulations and density functional theory (DFT) calculations. This peptide proved to be an exceptionally effective copper chelator, forming complexes which are thermodynamically more stable than those formed by both the albumin-like ATCUN motif and several other poly-histidine protein fragments. We show that, in a poly-histidine stretch, copper seems to prefer binding to residues separated by one amino acid and that a correlation between an α-helical structure of the predicted complexes and their thermodynamic stability is observed.
Collapse
Affiliation(s)
- Fabio Pontecchiani
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, via Fossato di Mortara 17, I-44121 Ferrara, Italy.
| | | | | | | | | | | | | | | | | |
Collapse
|