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Chowdhury SR, Lu HP. Spontaneous Rupture and Entanglement of Human Neuronal Tau Protein Induced by Piconewton Compressive Force. ACS Chem Neurosci 2019; 10:4061-4067. [PMID: 31423763 DOI: 10.1021/acschemneuro.9b00295] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Mechanical force vector fluctuations in living cells can have a significant impact on protein behavior and functions. Here we report that a human tau protein tertiary structure can abruptly and spontaneously rupture, like a balloon, under biologically available piconewton compressive force, using a home-modified atomic force microscopy single-molecule manipulation. The rupture behavior is dependent on the physiological level of presence of ions, such as K+ and Mg2+. We observed rupture events in the presence of K+ but not in the presence of Mg2+ ions. We have also explored the entangled protein state formed following the events of the multiple and simultaneous protein ruptures under crowding. Crowded proteins simultaneously rupture and then spontaneously refold to an entangled folding state, different from either folded and unfolded states of the tau protein, which can be a plausible pathway for the tau protein aggregation that is related to a number of neurodegenerative diseases.
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Affiliation(s)
- S. Roy Chowdhury
- Department of Chemistry, Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - H. Peter Lu
- Department of Chemistry, Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
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52
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Qian ZM, Ke Y. Hepcidin and its therapeutic potential in neurodegenerative disorders. Med Res Rev 2019; 40:633-653. [PMID: 31471929 DOI: 10.1002/med.21631] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 07/18/2019] [Accepted: 08/05/2019] [Indexed: 12/12/2022]
Abstract
Abnormally high brain iron, resulting from the disrupted expression or function of proteins involved in iron metabolism in the brain, is an initial cause of neuronal death in neuroferritinopathy and aceruloplasminemia, and also plays a causative role in at least some of the other neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, Huntington's disease, and Friedreich's ataxia. As such, iron is believed to be a novel target for pharmacological intervention in these disorders. Reducing iron toward normal levels or hampering the increases in iron associated with age in the brain is a promising therapeutic strategy for all iron-related neurodegenerative disorders. Hepcidin is a crucial regulator of iron homeostasis in the brain. Recent studies have suggested that upregulating brain hepcidin levels can significantly reduce brain iron content through the regulation of iron transport protein expression in the blood-brain barrier and in neurons and astrocytes. In this review, we focus on the discussion of the therapeutic potential of hepcidin in iron-associated neurodegenerative diseases and also provide a systematic overview of recent research progress on how misregulated brain iron metabolism is involved in the development of multiple neurodegenerative disorders.
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Affiliation(s)
- Zhong-Ming Qian
- Institute of Translational & Precision Medicine, Nantong University, Nantong, Jiangsu, China.,Laboratory of Neuropharmacology, School of Pharmacy & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Ya Ke
- School of Biomedical Sciences and Gerald Choa Neuroscience Centre, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
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53
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Impact of pyridine-2-carboxaldehyde-derived aroylhydrazones on the copper-catalyzed oxidation of the M112A PrP103–112 mutant fragment. J Biol Inorg Chem 2019; 24:1231-1244. [DOI: 10.1007/s00775-019-01700-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 07/23/2019] [Indexed: 12/30/2022]
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54
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Owen MC, Gnutt D, Gao M, Wärmländer SKTS, Jarvet J, Gräslund A, Winter R, Ebbinghaus S, Strodel B. Effects of in vivo conditions on amyloid aggregation. Chem Soc Rev 2019; 48:3946-3996. [PMID: 31192324 DOI: 10.1039/c8cs00034d] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
One of the grand challenges of biophysical chemistry is to understand the principles that govern protein misfolding and aggregation, which is a highly complex process that is sensitive to initial conditions, operates on a huge range of length- and timescales, and has products that range from protein dimers to macroscopic amyloid fibrils. Aberrant aggregation is associated with more than 25 diseases, which include Alzheimer's, Parkinson's, Huntington's, and type II diabetes. Amyloid aggregation has been extensively studied in the test tube, therefore under conditions that are far from physiological relevance. Hence, there is dire need to extend these investigations to in vivo conditions where amyloid formation is affected by a myriad of biochemical interactions. As a hallmark of neurodegenerative diseases, these interactions need to be understood in detail to develop novel therapeutic interventions, as millions of people globally suffer from neurodegenerative disorders and type II diabetes. The aim of this review is to document the progress in the research on amyloid formation from a physicochemical perspective with a special focus on the physiological factors influencing the aggregation of the amyloid-β peptide, the islet amyloid polypeptide, α-synuclein, and the hungingtin protein.
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Affiliation(s)
- Michael C Owen
- CEITEC - Central European Institute of Technology, Masaryk University, Kamenice 753/5, Brno 625 00, Czech Republic
| | - David Gnutt
- Institute of Physical and Theoretical Chemistry, TU Braunschweig, Rebenring 56, 38106 Braunschweig, Germany and Lead Discovery Wuppertal, Bayer AG, 42096 Wuppertal, Germany
| | - Mimi Gao
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Str. 4a, 44227 Dortmund, Germany and Sanofi-Aventis Deutschland GmbH, R&D, Industriepark Höchst, 65926 Frankfurt, Germany
| | - Sebastian K T S Wärmländer
- Department of Biochemistry and Biophysics, Stockholm University, Svante Arrhenius väg 16C, 106 91 Stockholm, Sweden
| | - Jüri Jarvet
- Department of Biochemistry and Biophysics, Stockholm University, Svante Arrhenius väg 16C, 106 91 Stockholm, Sweden
| | - Astrid Gräslund
- Department of Biochemistry and Biophysics, Stockholm University, Svante Arrhenius väg 16C, 106 91 Stockholm, Sweden
| | - Roland Winter
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Str. 4a, 44227 Dortmund, Germany
| | - Simon Ebbinghaus
- Institute of Physical and Theoretical Chemistry, TU Braunschweig, Rebenring 56, 38106 Braunschweig, Germany
| | - Birgit Strodel
- Institute of Complex Systems: Structural Biochemistry, Forschungszentrum Jülich, 42525 Jülich, Germany. and Institute of Theoretical and Computational Chemistry, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
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55
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Honarmand S, Dabirmanesh B, Amanlou M, Khajeh K. The interaction of several herbal extracts with α-synuclein: Fibril formation and surface plasmon resonance analysis. PLoS One 2019; 14:e0217801. [PMID: 31185031 PMCID: PMC6559707 DOI: 10.1371/journal.pone.0217801] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 05/17/2019] [Indexed: 11/18/2022] Open
Abstract
Proteins from their native conformation convert into highly ordered fibrillar aggregation under particular conditions; that are described as amyloid fibrils. α-Synuclein (α-Syn) is a small natively unfolded protein that its fibrillation is the causative factor of Parkinson's disease. One important approach in the development of therapeutic agents is the use of small molecules (such as flavonoids) that could specifically and efficiently inhibit the aggregation process. In this study the effect of few herbal extract (Berberis, Quercus robur, Zizyphus vulgaris, Salix aegyptica) containing flavonoids were investigated on fibril formation of α-syn by using conventional methods such as ThT fluorescence, circular dichroism (CD) spectroscopy and transmission electron microscopy (TEM). The interaction of extracts were also analysed by surface plasmon resonance (SPR). Among extracts, Salix aegyptica revealed the highest inhibitory effect on fibril formation. As expected, Salix aegyptica extract also exhibited the highest affinity toward α-syn. Cell viability using MTT assay revealed that fibrils alone were more toxic than those containing the extract. Overall, we demonstrated that the affinity of compounds used in this study corresponds to their ability to arrest fibrillation and reduce cellular toxicity of α-syn fibrils.
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Affiliation(s)
- Shokouh Honarmand
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University,Tehran, Iran
| | - Bahareh Dabirmanesh
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University,Tehran, Iran
- * E-mail:
| | - Massoud Amanlou
- Department of Medicinal Chemistry, Faculty of Pharmacy and Drug Design and Development Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Khosro Khajeh
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University,Tehran, Iran
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56
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Al-Harthi S, Lachowicz JI, Nowakowski ME, Jaremko M, Jaremko Ł. Towards the functional high-resolution coordination chemistry of blood plasma human serum albumin. J Inorg Biochem 2019; 198:110716. [PMID: 31153112 DOI: 10.1016/j.jinorgbio.2019.110716] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/07/2019] [Accepted: 05/13/2019] [Indexed: 12/11/2022]
Abstract
Human serum albumin (HSA) is a monomeric, globular, multi-carrier and the most abundant protein in the blood. HSA displays multiple ligand binding sites with extraordinary binding capacity for a wide range of ions and molecules. For decades, HSA's ability to bind to various ligands has led many scientists to study its physiological properties and protein structure; indeed, a better understanding of HSA-ligand interactions in human blood, at the atomic level, will likely foster the development of more potent, and overall more performant, diagnostic and therapeutic tools against serious human disorders such as diabetes, cardiovascular disorders, and cancer. Here, we present a concise overview of the current knowledge of HSA's structural characteristics, and its coordination chemistry with transition metal ions, within the scope and limitations of current techniques and biophysical methods to reach atomic resolution in solution and in blood serum. We also highlight the overwhelming need of a detailed atomistic understanding of HSA dynamic structures and interactions that are transient, weak, multi-site and multi-step, and allosterically affected by each other. Considering the fact that HSA is a current clinical tool for drug delivery systems and a potential contender as molecular cargo and nano-vehicle used in biophysical, clinical and industrial fields, we underline the emerging need for novel approaches to target the dynamic functional coordination chemistry of the human blood serum albumin in solution, at the atomic level.
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Affiliation(s)
- Samah Al-Harthi
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division (BESE), 23955-6900 Thuwal, Saudi Arabia
| | - Joanna Izabela Lachowicz
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato, Cagliari, Italy
| | - Michal Eligiusz Nowakowski
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division (BESE), 23955-6900 Thuwal, Saudi Arabia; Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Mariusz Jaremko
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division (BESE), 23955-6900 Thuwal, Saudi Arabia
| | - Łukasz Jaremko
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering Division (BESE), 23955-6900 Thuwal, Saudi Arabia.
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57
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Hawas AM. The biosensitivity of certain organs in rats exposed to low doses of γ-radiation. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2013.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Asrar M. Hawas
- Radiation Drug Research Department, National Centre for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt
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58
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Sales TA, Prandi IG, Castro AAD, Leal DHS, Cunha EFFD, Kuca K, Ramalho TC. Recent Developments in Metal-Based Drugs and Chelating Agents for Neurodegenerative Diseases Treatments. Int J Mol Sci 2019; 20:E1829. [PMID: 31013856 PMCID: PMC6514778 DOI: 10.3390/ijms20081829] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 04/07/2019] [Accepted: 04/09/2019] [Indexed: 02/07/2023] Open
Abstract
The brain has a unique biological complexity and is responsible for important functions in the human body, such as the command of cognitive and motor functions. Disruptive disorders that affect this organ, e.g. neurodegenerative diseases (NDDs), can lead to permanent damage, impairing the patients' quality of life and even causing death. In spite of their clinical diversity, these NDDs share common characteristics, such as the accumulation of specific proteins in the cells, the compromise of the metal ion homeostasis in the brain, among others. Despite considerable advances in understanding the mechanisms of these diseases and advances in the development of treatments, these disorders remain uncured. Considering the diversity of mechanisms that act in NDDs, a wide range of compounds have been developed to act by different means. Thus, promising compounds with contrasting properties, such as chelating agents and metal-based drugs have been proposed to act on different molecular targets as well as to contribute to the same goal, which is the treatment of NDDs. This review seeks to discuss the different roles and recent developments of metal-based drugs, such as metal complexes and metal chelating agents as a proposal for the treatment of NDDs.
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Affiliation(s)
- Thais A Sales
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras/MG, 37200-000, Brazil.
| | - Ingrid G Prandi
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras/MG, 37200-000, Brazil.
| | - Alexandre A de Castro
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras/MG, 37200-000, Brazil.
| | - Daniel H S Leal
- Department of Health Sciences, Federal University of Espírito Santo, São Mateus/ES, 29932-540, Brazil.
| | - Elaine F F da Cunha
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras/MG, 37200-000, Brazil.
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, 500 03, Czech Republic..
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, 500 03 Czech Republic.
| | - Teodorico C Ramalho
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras/MG, 37200-000, Brazil.
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, 500 03, Czech Republic..
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59
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A New Tetrasubstituted Imidazole Based Difunctional Probe for UV-spectrophotometric and Fluorometric Detecting of Fe3+ Ion in Aqueous Solution. Chem Res Chin Univ 2019. [DOI: 10.1007/s40242-019-8244-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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60
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Wang H, Ye X, Zhou J. Self-Assembly Fluorescent Cationic Cellulose Nanocomplex via Electrostatic Interaction for the Detection of Fe 3+ Ions. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E279. [PMID: 30781532 PMCID: PMC6410059 DOI: 10.3390/nano9020279] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/11/2019] [Accepted: 02/13/2019] [Indexed: 11/25/2022]
Abstract
In this work, an aggregation-induced emission (AIE) sensor for the detection of Fe3+ ions was fabricated through the electrostatic interaction between 1,1,2-triphenyl-2-[4-(3-sulfonatopropoxyl)-phenyl]-ethene sodium salt (SPOTPE) and quaternized cellulose (QC). The structure and properties of the SPOTPE/QC nanocomplex were studied by using ¹H NMR, spectrofluorophotometer, transmission electron microscopy (TEM), and dynamic laser light scattering (DLS). An aqueous solution of SPOTPE and QC resulted in a remarkably enhanced cyan fluorescence in comparison to that of the SPOTPE solution. Strong through-space electrostatic interaction between SPOTPE and QC is the main cause for the fluorescence emerging. The fluorescence of the SPOTPE/QC solutions show good stability over a wide pH range of 5.0⁻10.0. When introducing Fe3+ ions into the SPOTPE/QC solution, the fluorescence quenched within 5 s. SPOTPE/QC solutions exhibited high selectivity and sensitivity for the detection of Fe3+ ions with ignored interferences from other ions, and the detection limit was determined to be 2.92 × 10-6 M. The quenching mechanism was confirmed to be the consequence of the binding interactions between Fe3+ ions and SPOTPE/QC complex.
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Affiliation(s)
- Haoying Wang
- Department of Chemistry, Wuhan University, Wuhan 430072, China.
| | - Xiu Ye
- Department of Chemistry, Wuhan University, Wuhan 430072, China.
| | - Jinping Zhou
- Department of Chemistry, Wuhan University, Wuhan 430072, China.
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61
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Prasad A, Bharathi V, Sivalingam V, Girdhar A, Patel BK. Molecular Mechanisms of TDP-43 Misfolding and Pathology in Amyotrophic Lateral Sclerosis. Front Mol Neurosci 2019; 12:25. [PMID: 30837838 PMCID: PMC6382748 DOI: 10.3389/fnmol.2019.00025] [Citation(s) in RCA: 428] [Impact Index Per Article: 85.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 01/21/2019] [Indexed: 12/11/2022] Open
Abstract
TAR DNA binding protein 43 (TDP-43) is a versatile RNA/DNA binding protein involved in RNA-related metabolism. Hyper-phosphorylated and ubiquitinated TDP-43 deposits act as inclusion bodies in the brain and spinal cord of patients with the motor neuron diseases: amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD). While the majority of ALS cases (90-95%) are sporadic (sALS), among familial ALS cases 5-10% involve the inheritance of mutations in the TARDBP gene and the remaining (90-95%) are due to mutations in other genes such as: C9ORF72, SOD1, FUS, and NEK1 etc. Strikingly however, the majority of sporadic ALS patients (up to 97%) also contain the TDP-43 protein deposited in the neuronal inclusions, which suggests of its pivotal role in the ALS pathology. Thus, unraveling the molecular mechanisms of the TDP-43 pathology seems central to the ALS therapeutics, hence, we comprehensively review the current understanding of the TDP-43's pathology in ALS. We discuss the roles of TDP-43's mutations, its cytoplasmic mis-localization and aberrant post-translational modifications in ALS. Also, we evaluate TDP-43's amyloid-like in vitro aggregation, its physiological vs. pathological oligomerization in vivo, liquid-liquid phase separation (LLPS), and potential prion-like propagation propensity of the TDP-43 inclusions. Finally, we describe the various evolving TDP-43-induced toxicity mechanisms, such as the impairment of endocytosis and mitotoxicity etc. and also discuss the emerging strategies toward TDP-43 disaggregation and ALS therapeutics.
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Affiliation(s)
| | | | | | | | - Basant K. Patel
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Sangareddy, India
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62
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Cariccio VL, Samà A, Bramanti P, Mazzon E. Mercury Involvement in Neuronal Damage and in Neurodegenerative Diseases. Biol Trace Elem Res 2019; 187:341-356. [PMID: 29777524 DOI: 10.1007/s12011-018-1380-4] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/07/2018] [Indexed: 12/11/2022]
Abstract
Neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and multiple sclerosis are characterized by a chronic and selective process of neuronal cell death. Although the causes of neurodegenerative diseases remain still unknown, it is now a well-established idea that more factors, such as genetic, endogenous, and environmental, are involved. Among environmental causes, the accumulation of mercury, a heavy metal considered a toxic agent, was largely studied as a probable factor involved in neurodegenerative disease course. Mercury exists in three main forms: elemental mercury, inorganic mercury, and organic mercury (methylmercury and ethylmercury). Sources of elemental mercury can be natural (volcanic emission) or anthropogenic (coal-fired electric utilities, waste combustion, hazardous-waste incinerators, and gold extraction). Moreover, mercury is still used as an antiseptic, as a medical preservative, and as a fungicide. Dental amalgam can emit mercury vapor. Mercury vapor, being highly volatile and lipid soluble, can cross the blood-brain barrier and the lipid cell membranes and can be accumulated into the cells in its inorganic forms. Also, methylmercury can pass through blood-brain and placental barriers, causing serious damage in the central nervous system. This review describes the toxic effects of mercury in cell cultures, in animal models, and in patients with neurodegenerative diseases. In vitro experiments showed that mercury exposure was principally involved in oxidative stress and apoptotic processes. Moreover, motor and cognitive impairment and neural loss have been confirmed in various studies performed in animal models. Finally, observational studies on patients with neurodegenerative diseases showed discordant data about a possible mercury involvement.
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Affiliation(s)
- Veronica Lanza Cariccio
- IRCCS Centro Neurolesi "Bonino Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124, Messina, Italy
| | - Annalisa Samà
- IRCCS Centro Neurolesi "Bonino Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124, Messina, Italy
| | - Placido Bramanti
- IRCCS Centro Neurolesi "Bonino Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124, Messina, Italy
| | - Emanuela Mazzon
- IRCCS Centro Neurolesi "Bonino Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124, Messina, Italy.
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63
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Mueed Z, Tandon P, Maurya SK, Deval R, Kamal MA, Poddar NK. Tau and mTOR: The Hotspots for Multifarious Diseases in Alzheimer's Development. Front Neurosci 2019; 12:1017. [PMID: 30686983 PMCID: PMC6335350 DOI: 10.3389/fnins.2018.01017] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 12/17/2018] [Indexed: 12/14/2022] Open
Abstract
The hyperphosphorylation of tau protein and the overexpression of mTOR are considered to be the driving force behind Aβ plaques and Neurofibrillay Tangles (NFT's), hallmarks of Alzheimer's disease (AD). It is now evident that miscellaneous diseases such as Diabetes, Autoimmune diseases, Cancer, etc. are correlated with AD. Therefore, we reviewed the literature on the causes of AD and investigated the association of tau and mTOR with other diseases. We have discussed the role of insulin deficiency in diabetes, activated microglial cells, and dysfunction of blood-brain barrier (BBB) in Autoimmune diseases, Presenilin 1 in skin cancer, increased reactive species in mitochondrial dysfunction and deregulated Cyclins/CDKs in promoting AD pathogenesis. We have also discussed the possible therapeutics for AD such as GSK3 inactivation therapy, Rechaperoning therapy, Immunotherapy, Hormonal therapy, Metal chelators, Cell cycle therapy, γ-secretase modulators, and Cholinesterase and BACE 1-inhibitors which are thought to serve a major role in combating pathological changes coupled with AD. Recent research about the relationship between mTOR and aging and hepatic Aβ degradation offers possible targets to effectively target AD. Future prospects of AD aims at developing novel drugs and modulators that can potentially improve cell to cell signaling, prevent Aβ plaques formation, promote better release of neurotransmitters and prevent hyperphosphorylation of tau.
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Affiliation(s)
- Zeba Mueed
- Department of Biotechnology, Invertis University, Bareilly, India
| | - Pallavi Tandon
- Department of Biotechnology, Invertis University, Bareilly, India
| | | | - Ravi Deval
- Department of Biotechnology, Invertis University, Bareilly, India
| | - Mohammad A Kamal
- King Fahad Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.,Enzymoics, Hebersham, NSW, Australia.,Novel Global Community Educational Foundation, Hebersham, NSW, Australia
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64
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Yang Z, Loh KY, Chu YT, Feng R, Satyavolu NSR, Xiong M, Nakamata Huynh SM, Hwang K, Li L, Xing H, Zhang X, Chemla YR, Gruebele M, Lu Y. Optical Control of Metal Ion Probes in Cells and Zebrafish Using Highly Selective DNAzymes Conjugated to Upconversion Nanoparticles. J Am Chem Soc 2018; 140:17656-17665. [PMID: 30427666 DOI: 10.1021/jacs.8b09867] [Citation(s) in RCA: 176] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Spatial and temporal distributions of metal ions in vitro and in vivo are crucial in our understanding of the roles of metal ions in biological systems, and yet there is a very limited number of methods to probe metal ions with high space and time resolution, especially in vivo. To overcome this limitation, we report a Zn2+-specific near-infrared (NIR) DNAzyme nanoprobe for real-time metal ion tracking with spatiotemporal control in early embryos and larvae of zebrafish. By conjugating photocaged DNAzymes onto lanthanide-doped upconversion nanoparticles (UCNPs), we have achieved upconversion of a deep tissue penetrating NIR 980 nm light into 365 nm emission. The UV photon then efficiently photodecages a substrate strand containing a nitrobenzyl group at the 2'-OH of adenosine ribonucleotide, allowing enzymatic cleavage by a complementary DNA strand containing a Zn2+-selective DNAzyme. The product containing a visible FAM fluorophore that is initially quenched by BHQ1 and Dabcyl quenchers is released after cleavage, resulting in higher fluorescent signals. The DNAzyme-UCNP probe enables Zn2+ sensing by exciting in the NIR biological imaging window in both living cells and zebrafish embryos and detecting in the visible region. In this study, we introduce a platform that can be used to understand the Zn2+ distribution with spatiotemporal control, thereby giving insights into the dynamical Zn2+ ion distribution in intracellular and in vivo models.
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Affiliation(s)
| | | | | | | | | | - Mengyi Xiong
- Institute of Chemical Biology and Nanomedicine, College of Chemistry and Chemical Engineering , Hunan University , Changsha , Hunan 410082 , China
| | | | | | - Lele Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , China
| | - Hang Xing
- Institute of Chemical Biology and Nanomedicine, College of Chemistry and Chemical Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Xiaobing Zhang
- Institute of Chemical Biology and Nanomedicine, College of Chemistry and Chemical Engineering , Hunan University , Changsha , Hunan 410082 , China
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65
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A review on iron chelators as potential therapeutic agents for the treatment of Alzheimer’s and Parkinson’s diseases. Mol Divers 2018; 23:509-526. [DOI: 10.1007/s11030-018-9878-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 09/25/2018] [Indexed: 12/19/2022]
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66
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Rohini G, Ramaiah K, Sreekanth A. Naphthalene dianhydride based selective detection targetable fluorescent probe for monitoring exogenous Iron in living cells. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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67
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Willkommen D, Lucio M, Schmitt-Kopplin P, Gazzaz M, Schroeter M, Sigaroudi A, Michalke B. Species fractionation in a case-control study concerning Parkinson's disease: Cu-amino acids discriminate CSF of PD from controls. J Trace Elem Med Biol 2018; 49:164-170. [PMID: 29472131 DOI: 10.1016/j.jtemb.2018.01.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 01/02/2018] [Accepted: 01/17/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Parkinson's disease is affecting about 1% of the population above 65 years. Improvements in medicine support prolonged lifetime which increases the total concentration of humans affected by the disease. It is suggested that occupational and environmental exposure to metals like iron (Fe), manganese (Mn), copper (Cu) and zinc (Zn) can influence the risk for Parkinson's disease. These metals play a key role as cofactors in many enzymes and proteins. METHODS In this case-control study, we investigated the Mn-, Fe-, Cu- and Zn-species in cerebrospinal fluid (CSF) by size-exclusion chromatography hyphenated to inductively coupled plasma mass spectrometry (SEC-ICP-MS) and the total concentration of these metals by inductively coupled plasma sector field mass spectrometry (ICP-sf-MS). RESULTS The investigation of total metal concentration and speciation provided only minor changes, but it produced strong significance for a number of ratios. The analysis revealed a strong change in the ratio between total concentration of Fe and the amino acid-fraction of Cu. This could be observed when analyzing both the respective element concentrations of the fraction (which also depends on individual variation of the total element concentration) as well as when being expressed as percentage of total concentration (normalization) which more clearly shows changes of distribution pattern independent of individual variation of total element concentrations. CONCLUSION Speciation analysis, therefore, is a powerful technique to investigate changes in a case-control study where ratios of different species play an important role.
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Affiliation(s)
- Desiree Willkommen
- Helmholtz Zentrum München, Analytical Biogeochemistry, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany.
| | - Marianna Lucio
- Helmholtz Zentrum München, Analytical Biogeochemistry, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Philippe Schmitt-Kopplin
- Helmholtz Zentrum München, Analytical Biogeochemistry, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; TU München, Lehrstuhl für Analytische Lebensmittelchemie, Wissenschaftszentrum Weihenstephan, Alte Akademie 10, 85354 Freising, Germany
| | - Malaz Gazzaz
- Uniklinik Köln, Institut I für Pharmakologie, Zentrum für Pharmakologie, Gleueler Straße 24, 50931 Köln, Germany
| | - Michael Schroeter
- Uniklinik Köln, Klinik und Poliklinik für Neurologie und Psychiatrie, Kerpener Str. 62, 50924 Köln, Germany
| | - Ali Sigaroudi
- Uniklinik Köln, Institut I für Pharmakologie, Zentrum für Pharmakologie, Gleueler Straße 24, 50931 Köln, Germany; Universitätsspital Zürich, Klinik für Klinische Pharmakologie und Toxikologie, Rämistraße 100, 8091 Zürich, Switzerland
| | - Bernhard Michalke
- Helmholtz Zentrum München, Analytical Biogeochemistry, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
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68
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Jing Z, Qi R, Liu C, Ren P. Study of interactions between metal ions and protein model compounds by energy decomposition analyses and the AMOEBA force field. J Chem Phys 2018; 147:161733. [PMID: 29096462 DOI: 10.1063/1.4985921] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The interactions between metal ions and proteins are ubiquitous in biology. The selective binding of metal ions has a variety of regulatory functions. Therefore, there is a need to understand the mechanism of protein-ion binding. The interactions involving metal ions are complicated in nature, where short-range charge-penetration, charge transfer, polarization, and many-body effects all contribute significantly, and a quantitative description of all these interactions is lacking. In addition, it is unclear how well current polarizable force fields can capture these energy terms and whether these polarization models are good enough to describe the many-body effects. In this work, two energy decomposition methods, absolutely localized molecular orbitals and symmetry-adapted perturbation theory, were utilized to study the interactions between Mg2+/Ca2+ and model compounds for amino acids. Comparison of individual interaction components revealed that while there are significant charge-penetration and charge-transfer effects in Ca complexes, these effects can be captured by the van der Waals (vdW) term in the AMOEBA force field. The electrostatic interaction in Mg complexes is well described by AMOEBA since the charge penetration is small, but the distance-dependent polarization energy is problematic. Many-body effects were shown to be important for protein-ion binding. In the absence of many-body effects, highly charged binding pockets will be over-stabilized, and the pockets will always favor Mg and thus lose selectivity. Therefore, many-body effects must be incorporated in the force field in order to predict the structure and energetics of metalloproteins. Also, the many-body effects of charge transfer in Ca complexes were found to be non-negligible. The absorption of charge-transfer energy into the additive vdW term was a main source of error for the AMOEBA many-body interaction energies.
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Affiliation(s)
- Zhifeng Jing
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, USA
| | - Rui Qi
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, USA
| | - Chengwen Liu
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, USA
| | - Pengyu Ren
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, USA
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69
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Sreedevi P, Nair JB, Preethanuj P, Jeeja BS, Suresh CH, Maiti KK, Varma RL. Calix[4]arene Based Redox Sensitive Molecular Probe for SERS Guided Recognition of Labile Iron Pool in Tumor Cells. Anal Chem 2018; 90:7148-7153. [PMID: 29792682 DOI: 10.1021/acs.analchem.8b01982] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Targeting the intracellular "labile" iron pool is turned as a key modulator for cancer progression since the former is responsible for several pathological processes in tumor cells. Herein, we report a nonfluorescent calix[4]arene based triazole appended molecular probe (PTBC) for redox-specific detection of Fe3+ under physiological condition by UV-vis, FT-IR, 1H NMR, HR-MS spectroscopies, ITC, and the binding strategy between Calix[4]arene and Fe3+ was modeled by DFT calculations. As a new insight PTBC probe showed significant Raman fingerprint through surface enhanced Raman scattering (SERS) modality revealing the ultrasensitive detection of Fe3+ with a LOD of 2 nM. Interestingly, intracellular "iron pool" has been recognized in human lung adenocarcinoma cells (A549) by the PTBC illustrating the distinct Raman mapping. Finally, PTBC imparted cytotoxicity via reactive oxygen species (ROS) generation in cellular milieu signifies its capability as a theranostic molecular probe.
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Affiliation(s)
- Padincharapad Sreedevi
- Organic Chemistry Section, Chemical Sciences & Technology Division (CSTD) , CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram , 695019 , Kerala India
| | - Jyothi B Nair
- Organic Chemistry Section, Chemical Sciences & Technology Division (CSTD) , CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram , 695019 , Kerala India.,Academy of Scientific and Innovative Research (AcSIR) , New Delhi , 110020 , India
| | - Preethalayam Preethanuj
- Organic Chemistry Section, Chemical Sciences & Technology Division (CSTD) , CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram , 695019 , Kerala India
| | - Benadicta S Jeeja
- Organic Chemistry Section, Chemical Sciences & Technology Division (CSTD) , CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram , 695019 , Kerala India
| | - Cherumuttathu H Suresh
- Organic Chemistry Section, Chemical Sciences & Technology Division (CSTD) , CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram , 695019 , Kerala India.,Academy of Scientific and Innovative Research (AcSIR) , New Delhi , 110020 , India
| | - Kaustabh Kumar Maiti
- Organic Chemistry Section, Chemical Sciences & Technology Division (CSTD) , CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram , 695019 , Kerala India.,Academy of Scientific and Innovative Research (AcSIR) , New Delhi , 110020 , India
| | - Ramavarma Luxmi Varma
- Organic Chemistry Section, Chemical Sciences & Technology Division (CSTD) , CSIR-National Institute for Interdisciplinary Science & Technology (CSIR-NIIST) , Thiruvananthapuram , 695019 , Kerala India.,Academy of Scientific and Innovative Research (AcSIR) , New Delhi , 110020 , India
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70
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Sun Y, Pham AN, Waite TD. Mechanism Underlying the Effectiveness of Deferiprone in Alleviating Parkinson's Disease Symptoms. ACS Chem Neurosci 2018; 9:1118-1127. [PMID: 29381045 DOI: 10.1021/acschemneuro.7b00478] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Elevation in iron content as well as severe depletion of dopamine (DA) as a result of iron-induced loss of dopaminergic neurons has been recognized to accompany the progression of Parkinson's disease (PD). To better understand the mechanism of the mitigating effect of the iron chelator deferiprone (DFP) on PD, the interplay between iron and DFP was investigated both in the absence and presence of DA. The results show that DFP was extremely efficient in scavenging both aqueous iron and iron that was loosely bound to DA with the entrapment of iron in Fe-DFP complexed form critical to halting the iron catalyzed degradation of DA and associated generation of toxic metabolites. The DFP related scavenging of dopamine semiquinone (DA•-) and superoxide (O2•-) may also contribute to its positive effects in the treatment of PD.
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Affiliation(s)
- Yingying Sun
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - An Ninh Pham
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - T. David Waite
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
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71
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D'Acunto CW, Kaplánek R, Gbelcová H, Kejík Z, Bříza T, Vasina L, Havlík M, Ruml T, Král V. Metallomics for Alzheimer's disease treatment: Use of new generation of chelators combining metal-cation binding and transport properties. Eur J Med Chem 2018. [PMID: 29525434 DOI: 10.1016/j.ejmech.2018.02.084] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder affecting tens of million people. Currently marketed drugs have limited therapeutic efficacy and only slowing down the neurodegenerative process. Interestingly, it has been suggested that biometal cations in the amyloid beta (Aβ) aggregate deposits contribute to neurotoxicity and degenerative changes in AD. Thus, chelation therapy could represent novel mode of therapeutic intervention. Here we describe the features of chelators with therapeutically relevant mechanism of action. We have found that the tested compounds effectively reduce the toxicity of exogenous Aβ and suppress its endogenous production as well as decrease oxidative stress. Cholyl hydrazones were found to be the most active compounds. In summary, our data show that cation complexation, together with improving transport efficacy may represent basis for eventual treatment strategy in AD.
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Affiliation(s)
| | - Robert Kaplánek
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Helena Gbelcová
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University, Sasinkova 4, 81101 Bratislava, Slovakia
| | - Zdeněk Kejík
- First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Tomáš Bříza
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Liudmila Vasina
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Martin Havlík
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Tomáš Ruml
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic.
| | - Vladimír Král
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic.
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72
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Ji J, Chereddy SS, Ren Y, Chen X, Su D, Zhong Z, Mori T, Inoue Y, Wu W, Yang C. A BODIPY-based near infrared fluorescent probe for Fe3+ in water. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.10.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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73
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Kotynia A, Pap JS, Brasun J. The binding abilities of homodetic cyclic His-peptides toward copper ions. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.07.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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74
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Zhang C, Luo J, Ou L, Lun Y, Cai S, Hu B, Yu G, Pan C. Fluorescent Porous Carbazole-Decorated Copolymer Monodisperse Microspheres: Facile synthesis, Selective and Recyclable Detection of Iron (III) in Aqueous Medium. Chemistry 2018; 24:3030-3037. [DOI: 10.1002/chem.201705560] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Chunyan Zhang
- College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources; Central South University; Changsha 410083 P. R. China
- Department of Materials and Chemical Engineering, Key Laboratory of Functional Materials for Green Building; Hunan Institute of Technology; Hengyang 421002 P. R. China
| | - Jianxin Luo
- Department of Materials and Chemical Engineering, Key Laboratory of Functional Materials for Green Building; Hunan Institute of Technology; Hengyang 421002 P. R. China
| | - Lijuan Ou
- Department of Materials and Chemical Engineering, Key Laboratory of Functional Materials for Green Building; Hunan Institute of Technology; Hengyang 421002 P. R. China
| | - Yinghui Lun
- Department of Materials and Chemical Engineering, Key Laboratory of Functional Materials for Green Building; Hunan Institute of Technology; Hengyang 421002 P. R. China
| | - Songtao Cai
- Department of Materials and Chemical Engineering, Key Laboratory of Functional Materials for Green Building; Hunan Institute of Technology; Hengyang 421002 P. R. China
| | - Bonian Hu
- Department of Materials and Chemical Engineering, Key Laboratory of Functional Materials for Green Building; Hunan Institute of Technology; Hengyang 421002 P. R. China
| | - Guipeng Yu
- College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources; Central South University; Changsha 410083 P. R. China
| | - Chunyue Pan
- College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources; Central South University; Changsha 410083 P. R. China
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75
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Kaindlstorfer C, Jellinger KA, Eschlböck S, Stefanova N, Weiss G, Wenning GK. The Relevance of Iron in the Pathogenesis of Multiple System Atrophy: A Viewpoint. J Alzheimers Dis 2018; 61:1253-1273. [PMID: 29376857 PMCID: PMC5798525 DOI: 10.3233/jad-170601] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2017] [Indexed: 12/16/2022]
Abstract
Iron is essential for cellular development and maintenance of multiple physiological processes in the central nervous system. The disturbance of its homeostasis leads to abnormal iron deposition in the brain and causes neurotoxicity via generation of free radicals and oxidative stress. Iron toxicity has been established in the pathogenesis of Parkinson's disease; however, its contribution to multiple system atrophy (MSA) remains elusive. MSA is characterized by cytoplasmic inclusions of misfolded α-synuclein (α-SYN) in oligodendrocytes referred to as glial cytoplasmic inclusions (GCIs). Remarkably, the oligodendrocytes possess high amounts of iron, which together with GCI pathology make a contribution toward MSA pathogenesis likely. Consistent with this observation, the GCI density is associated with neurodegeneration in central autonomic networks as well as olivopontocerebellar and striatonigral pathways. Iron converts native α-SYN into a β-sheet conformation and promotes its aggregation either directly or via increasing levels of oxidative stress. Interestingly, α-SYN possesses ferrireductase activity and α-SYN expression underlies iron mediated translational control via RNA stem loop structures. Despite a correlation between progressive putaminal atrophy and iron accumulation as well as clinical decline, it remains unclear whether pathologic iron accumulation in MSA is a secondary event in the cascade of neuronal degeneration rather than a primary cause. This review summarizes the current knowledge of iron in MSA and gives evidence for perturbed iron homeostasis as a potential pathogenic factor in MSA-associated neurodegeneration.
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Affiliation(s)
| | | | - Sabine Eschlböck
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Nadia Stefanova
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Gregor K. Wenning
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
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76
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Govindaraju M, Rao Jayanth KS, Jagadeesh Kumar D, Prasada Rao UJS, Sambasiva Rao KRS, Rao KS. Studies on Copper and Aβ 1-16-Induced Conformational Changes in CAG/CTG Trinucleotide Repeats Sequence. J Alzheimers Dis Rep 2017; 1:277-286. [PMID: 30480244 PMCID: PMC6159631 DOI: 10.3233/adr-170027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
DNA conformation and stability are critical for the normal cell functions, which control many cellular processes in life, such as replication, transcription, DNA repair, etc. The accumulation of amyloid-β peptide (Aβ) and Copper (Cu) are the etiological factors for neurodegenerative diseases and hypothesized that they can cause DNA instability. In the current investigation, we studied copper and Aβ1-16 induced conformation and stability changes in CAG/CTG sequences and found alterations from B-DNA to altered B-conformation. Further, the interaction of the copper and Aβ1-16 with CAG/CTG sequences was studied by molecular docking modeling and results indicated that the interaction of copper and Aβ1-16 was through the hydrogen bond formation between adenine, guanine, and cytocine. This study illustrates the role of the copper and Aβ1-16 in modulating the DNA conformation and stability.
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Affiliation(s)
- M Govindaraju
- Department of Molecular Biophysics, Indian Institute of Science, Bangalore, India
| | - K S Rao Jayanth
- Center for Neuroscience, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Republic of Panama.,Undergraduate Student, University of Missouri Kansas City (UMKC), Kansas City, MO, USA
| | - D Jagadeesh Kumar
- Department of Biotechnology, Sir M. Visvesvaraya Institute of Technology, Bangalore, India
| | - U J S Prasada Rao
- Department of Biochemistry, CSIR-Central Food Technological Research Institute (CFTRI), Mysore, India
| | | | - K S Rao
- Center for Neuroscience, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Republic of Panama
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77
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Dichtl S, Haschka D, Nairz M, Seifert M, Volani C, Lutz O, Weiss G. Dopamine promotes cellular iron accumulation and oxidative stress responses in macrophages. Biochem Pharmacol 2017; 148:193-201. [PMID: 29208364 DOI: 10.1016/j.bcp.2017.12.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 12/01/2017] [Indexed: 02/07/2023]
Abstract
Iron is essential for many biological functions including neurotransmitter synthesis, where the metal is a co-factor of tyrosine hydroxylase, which converts tyrosine to dopamine and further to norepinephrine. As the shared chemical structure, called catechol, may potentially bind iron we questioned whether tyrosine derived hormones would impact on cellular iron homeostasis in macrophages, which are central for the maintenance of body iron homeostasis. Using murine bone marrow-derived macrophages (BMDMs), we investigated the effect of catecholamines and found that only dopamine but neither tyrosine, nor norepinephrine, affected cellular iron homeostasis. Exposure of macrophages to dopamine increased the uptake of non-transferrin bound iron into cells. The expansion of intracellular iron upon dopamine treatment resulted in oxidative stress responses as evidenced by increased expression of nuclear factor erythroid 2-related factor (Nrf2) and hypoxia inducible factor-1α. As a consequence, the transcriptional expression of stress response genes such as heme oxygenase-1 and the iron export protein ferroportin1 were significantly increased. Genetic deletion of Nrf2 abolished these effects of dopamine. Dopamine directly affects cellular iron homeostasis by increasing iron incorporation into macrophages and subsequently promoting intracellular oxidative stress responses. Our observations are of interest for disorders involving dopamine and iron dyshomeostasis such as Parkinson's disease and restless legs syndrome, partly enlightening the underlying pathology or the therapeutic efficacy of dopamine agonists to overcome neuronal iron deficiency.
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Affiliation(s)
- Stefanie Dichtl
- Department of Internal Medicine II (Infectious Diseases, Immunology, Rheumatology and Pneumology), Medical University of Innsbruck, A-6020 Innsbruck, Austria
| | - David Haschka
- Department of Internal Medicine II (Infectious Diseases, Immunology, Rheumatology and Pneumology), Medical University of Innsbruck, A-6020 Innsbruck, Austria
| | - Manfred Nairz
- Department of Internal Medicine II (Infectious Diseases, Immunology, Rheumatology and Pneumology), Medical University of Innsbruck, A-6020 Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II (Infectious Diseases, Immunology, Rheumatology and Pneumology), Medical University of Innsbruck, A-6020 Innsbruck, Austria
| | - Chiara Volani
- Department of Internal Medicine II (Infectious Diseases, Immunology, Rheumatology and Pneumology), Medical University of Innsbruck, A-6020 Innsbruck, Austria
| | - Oliver Lutz
- Austrian Drug Screening Institute (ADSI), Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II (Infectious Diseases, Immunology, Rheumatology and Pneumology), Medical University of Innsbruck, A-6020 Innsbruck, Austria.
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78
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Yu L, Wang X, Chen H, Yan Z, Wang M, Li Y. Neurochemical and Behavior Deficits in Rats with Iron and Rotenone Co-treatment: Role of Redox Imbalance and Neuroprotection by Biochanin A. Front Neurosci 2017; 11:657. [PMID: 29217997 PMCID: PMC5703859 DOI: 10.3389/fnins.2017.00657] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 11/10/2017] [Indexed: 12/21/2022] Open
Abstract
Increasing evidences show that the etiology of Parkinson's disease (PD) is multifactorial. Studying the combined effect of several factors is becoming a hot topic in PD research. On one hand, iron is one of the essential trace metals for human body; on the other hand, iron may be involved in the etiopathogenesis of PD. In our present study, the rats with increased neonatal iron (120 μg/g bodyweight) supplementation were treated with rotenone (0.5 mg/kg) when they were aged to 14 weeks. We observed that iron and rotenone co-treatment induced significant behavior deficits (time-dependent) and striatal dopamine depletion in the male and female rats, while they did not do so when they were used alone. No significant change in striatal 5-hydroxytryptamine content was observed in the male and female rats with iron and rotenone co-treatment. Also, iron and rotenone co-treatment significantly decreased substantia nigra TH expression in the male rats. Furthermore, co-treatment with iron and rotenone significantly induced malondialdehyde increase and glutathione decrease in the substantia nigra of male and female rats. There was no significant change in cerebellar malondialdehyde and glutathione content of the rats co-treated with iron and rotenone. Interestingly, biochanin A significantly attenuated striatal dopamine depletion and improved behavior deficits (dose-dependently) in the male and female rats with iron and rotenone co-treatment. Biochanin A treatment also significantly alleviated substantia nigra TH expression reduction in the male rats co-treated with iron and rotenone. Finally, biochanin A significantly decreased malondialdehyde content and increased glutathione content in the substantia nigra of male and female rats with iron and rotenone co-treatment. Our results indicate that iron and rotenone co-treatment may result in aggravated neurochemical and behavior deficits through inducing redox imbalance and increased neonatal iron supplementation may participate in the etiopathogenesis of PD. Moreover, biochanin A may exert dopaminergic neuroprotection by maintaining redox balance.
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Affiliation(s)
- Lijia Yu
- Department of Neurology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xijin Wang
- Department of Neurology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hanqing Chen
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, China
| | - Zhiqiang Yan
- Shanghai Laboratory Animal Center, Chinese Academy of Sciences, Shanghai, China
| | - Meihua Wang
- Department of Neurology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yunhong Li
- Department of Neurology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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79
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Mary CPV, Vijayakumar S, Shankar R. Metal chelating ability and antioxidant properties of Curcumin-metal complexes - A DFT approach. J Mol Graph Model 2017; 79:1-14. [PMID: 29127853 DOI: 10.1016/j.jmgm.2017.10.022] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 10/13/2017] [Accepted: 10/31/2017] [Indexed: 12/20/2022]
Abstract
Curcumin, a well-documented phytochemical compound used to treat various diseases because of its more tolerability in the human body and has no side effects. The present study describes the metal chelating ability of Curcumin for Mn2+, Fe2+ and Zn2+ metal ions and their antioxidant properties using density functional theory in both gas and DMSO solvent phases. Results reveal that the carbonyl group at diketo moiety is destabilized due to the metal ion coordination. The interaction energies reveal that CurEN-Zn2+ are the most stable rather than the CurEN-Mn2+ and CurEN-Fe2+ complexes. The AIM analysis confirms that the interaction between the metal ions and Curcumin are to be electrostatic dominant. The HOMO-LUMO orbital analysis shows that the charge transfer interaction is dominant for CurEN-Mn2+ and CurEN-Fe2+ complexes. The DMSO solvent interactions decrease the stability of the CurEN-M2+ cation complexes. The antioxidant mechanism is more reactive for metal complexes than the isolated Curcumin. Since Curcumin possess both metal chelating and antioxidant properties, it can be used in chelation therapy for the cure of Alzheimer's disease.
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Affiliation(s)
| | - S Vijayakumar
- Department of Medical Physics, Bharathiar University, Coimbatore 641 046, India.
| | - R Shankar
- Department of Physics, Bharathiar University, Coimbatore 641 046, India
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80
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Protein aggregation: From background to inhibition strategies. Int J Biol Macromol 2017; 103:208-219. [DOI: 10.1016/j.ijbiomac.2017.05.048] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 05/11/2017] [Accepted: 05/12/2017] [Indexed: 01/01/2023]
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81
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Diomede L, Romeo M, Rognoni P, Beeg M, Foray C, Ghibaudi E, Palladini G, Cherny RA, Verga L, Capello GL, Perfetti V, Fiordaliso F, Merlini G, Salmona M. Cardiac Light Chain Amyloidosis: The Role of Metal Ions in Oxidative Stress and Mitochondrial Damage. Antioxid Redox Signal 2017; 27:567-582. [PMID: 28132512 PMCID: PMC5567464 DOI: 10.1089/ars.2016.6848] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AIMS The knowledge of the mechanism underlying the cardiac damage in immunoglobulin light chain (LC) amyloidosis (AL) is essential to develop novel therapies and improve patients' outcome. Although an active role of reactive oxygen species (ROS) in LC-induced cardiotoxicity has already been envisaged, the actual mechanisms behind their generation remain elusive. This study was aimed at further dissecting the action of ROS generated by cardiotoxic LC in vivo and investigating whether transition metal ions are involved in this process. In the absence of reliable vertebrate model of AL, we used the nematode Caenorhabditis elegans, whose pharynx is an "ancestral heart." RESULTS LC purified from patients with severe cardiac involvement intrinsically generated high levels of ROS and when administered to C. elegans induced ROS production, activation of the DAF-16/forkhead transcription factor (FOXO) pathway, and expression of proteins involved in stress resistance and survival. Profound functional and structural ROS-mediated mitochondrial damage, similar to that observed in amyloid-affected hearts from AL patients, was observed. All these effects were entirely dependent on the presence of metal ions since addition of metal chelator or metal-binding 8-hydroxyquinoline compounds (chelex, PBT2, and clioquinol) permanently blocked the ROS production and prevented the cardiotoxic effects of amyloid LC. Innovation and Conclusion: Our findings identify the key role of metal ions in driving the ROS-mediated toxic effects of LC. This is a novel conceptual advance that paves the way for new pharmacological strategies aimed at not only counteracting but also totally inhibiting the vicious cycle of redox damage. Antioxid. Redox Signal. 27, 567-582.
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Affiliation(s)
- Luisa Diomede
- 1 Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Margherita Romeo
- 1 Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Paola Rognoni
- 2 Amyloid Research and Treatment Center , Foundation IRCCS Policlinico San Matteo, Pavia, Italy
| | - Marten Beeg
- 1 Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Claudia Foray
- 3 Bio-imaging Unit, Department of Cardiovascular Research, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Elena Ghibaudi
- 4 Department of Chemistry, University of Turin , Turin, Italy
| | - Giovanni Palladini
- 2 Amyloid Research and Treatment Center , Foundation IRCCS Policlinico San Matteo, Pavia, Italy .,5 Department of Molecular Medicine, University of Pavia , Pavia, Italy
| | - Robert A Cherny
- 6 The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , Royal Pde, Parkville, Australia .,7 Prana Biotechnology Ltd. , Parkville, Australia
| | - Laura Verga
- 8 Pathologic Unit, Foundation IRCCS Policlinico San Matteo , Pavia, Italy
| | - Gian Luca Capello
- 8 Pathologic Unit, Foundation IRCCS Policlinico San Matteo , Pavia, Italy
| | - Vittorio Perfetti
- 9 Medical Oncology Unit, Foundation IRCCS Policlinico San Matteo , Pavia, Italy
| | - Fabio Fiordaliso
- 3 Bio-imaging Unit, Department of Cardiovascular Research, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Giampaolo Merlini
- 2 Amyloid Research and Treatment Center , Foundation IRCCS Policlinico San Matteo, Pavia, Italy .,5 Department of Molecular Medicine, University of Pavia , Pavia, Italy
| | - Mario Salmona
- 1 Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
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82
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Zn(II) - pramlintide: Stability, binding sites and unexpected aggregation. J Inorg Biochem 2017; 174:150-155. [DOI: 10.1016/j.jinorgbio.2017.06.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/31/2017] [Accepted: 06/20/2017] [Indexed: 11/23/2022]
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83
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Mazon JN, de Mello AH, Ferreira GK, Rezin GT. The impact of obesity on neurodegenerative diseases. Life Sci 2017; 182:22-28. [PMID: 28583368 DOI: 10.1016/j.lfs.2017.06.002] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 12/12/2022]
Abstract
Neurodegenerative diseases are a growing health concern. The increasing incidences of these disorders have a great impact on the patients' quality of life. Although the mechanisms of neurodegenerative diseases are still far from being clarified, several studies look for new discoveries about their pathophysiology and prevention. Furthermore, evidence has shown a strong correlation between obesity and the development of Alzheimer's disease (AD) and Parkinson's disease (PD). Metabolic changes caused by overweight are related to damage to the central nervous system (CNS), which can lead to neural death, either by apoptosis or cell necrosis, as well as alter the synaptic plasticity of the neuron. This review aims to show the association between neurodegenerative diseases, focusing on AD and PD, and metabolic alterations.
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Affiliation(s)
- Janaína Niero Mazon
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Av. José Acácio Moreira, 787, 88704-900 Tubarão, SC, Brazil
| | - Aline Haas de Mello
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Av. José Acácio Moreira, 787, 88704-900 Tubarão, SC, Brazil
| | - Gabriela Kozuchovski Ferreira
- Laboratory Pharmacology and Pathophysiology of Skin, Department of Pharmacology, Federal University of Paraná, Av. Coronel Franscisco Heráclito dos Santos, 210, 81531-970 Curitiba, PR, Brazil.
| | - Gislaine Tezza Rezin
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Av. José Acácio Moreira, 787, 88704-900 Tubarão, SC, Brazil
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84
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A moderate metal-binding hydrazone meets the criteria for a bioinorganic approach towards Parkinson's disease: Therapeutic potential, blood-brain barrier crossing evaluation and preliminary toxicological studies. J Inorg Biochem 2017; 170:160-168. [DOI: 10.1016/j.jinorgbio.2017.02.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 02/18/2017] [Accepted: 02/20/2017] [Indexed: 01/14/2023]
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85
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Diaz-Espinoza R, Nova E, Monasterio O. Overcoming electrostatic repulsions during amyloid assembly: Effect of pH and interaction with divalent metals using model peptides. Arch Biochem Biophys 2017; 621:46-53. [DOI: 10.1016/j.abb.2017.03.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 03/06/2017] [Accepted: 03/09/2017] [Indexed: 12/17/2022]
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86
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Kaviani S, Izadyar M, Housaindokht MR. A DFT study on the complex formation between desferrithiocin and metal ions (Mg2+, Al3+, Ca2+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+). Comput Biol Chem 2017; 67:114-121. [DOI: 10.1016/j.compbiolchem.2016.12.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 11/15/2016] [Accepted: 12/29/2016] [Indexed: 01/25/2023]
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87
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Hao C, Wang W, Wang S, Zhang L, Guo Y. An Overview of the Protective Effects of Chitosan and Acetylated Chitosan Oligosaccharides against Neuronal Disorders. Mar Drugs 2017; 15:md15040089. [PMID: 28333077 PMCID: PMC5408235 DOI: 10.3390/md15040089] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 03/07/2017] [Accepted: 03/15/2017] [Indexed: 12/12/2022] Open
Abstract
Chitin is the second most abundant biopolymer on Earth and is mainly comprised of a marine invertebrate, consisting of repeating β-1,4 linked N-acetylated glucosamine units, whereas its N-deacetylated product, chitosan, has broad medical applications. Interestingly, chitosan oligosaccharides have therapeutic effects on different types of neuronal disorders, including, but not limited to, Alzheimer’s disease, Parkinson’s disease, and nerve crush injury. A common link among neuronal disorders is observed at a sub-cellular level, such as atypical protein assemblies and induced neuronal death. Chronic activation of innate immune responses that lead to neuronal injury is also common in these diseases. Thus, the common mechanisms of neuronal disorders might explain the general therapeutic effects of chitosan oligosaccharides and their derivatives in these diseases. This review provides an update on the pathogenesis and therapy for neuronal disorders and will be mainly focused on the recent progress made towards the neuroprotective properties of chitosan and acetylated chitosan oligosaccharides. Their structural features and the underlying molecular mechanisms will also be discussed.
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Affiliation(s)
- Cui Hao
- Institute of Cerebrovascular Diseases, Affiliated Hospital of Qingdao University, Qingdao 266003, China.
| | - Wei Wang
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao 266003, China.
| | - Shuyao Wang
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao 266003, China.
| | - Lijuan Zhang
- Institute of Cerebrovascular Diseases, Affiliated Hospital of Qingdao University, Qingdao 266003, China.
| | - Yunliang Guo
- Institute of Cerebrovascular Diseases, Affiliated Hospital of Qingdao University, Qingdao 266003, China.
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88
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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.
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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.
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89
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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]
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90
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Soares FA, Fagundez DA, Avila DS. Neurodegeneration Induced by Metals in Caenorhabditis elegans. ADVANCES IN NEUROBIOLOGY 2017; 18:355-383. [PMID: 28889277 DOI: 10.1007/978-3-319-60189-2_18] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Metals are a component of a variety of ecosystems and organisms. They can generally be divided into essential and nonessential metals. The essential metals are involved in physiological processes once the deficiency of these metals has been associated with diseases. Although iron, manganese, copper, and zinc are important for life, it has been evidenced that they are also involved in neuronal damage in many neurodegenerative disorders. Nonessential metals, which are metals without physiological functions, are present in trace or higher levels in living organisms. Occupational, environmental, or deliberate exposures to lead, mercury, aluminum, and cadmium are clearly correlated with the increase of toxicity and varied kinds of pathological situations. Actually, the field of neurotoxicology needs to satisfy two opposing demands: the testing of a growing list of chemicals and resource limitations and ethical concerns associated with testing using traditional mammalian species. Toxicological assays using alternative animal models may relieve some of this pressure by allowing testing of more compounds while reducing expenses and using fewer mammals. The nervous system is by far the more complex system in C. elegans. Almost a third of their cells are neurons (302 neurons versus 959 cells in adult hermaphrodite). It initially underwent extensive development as a model organism in order to study the nervous system, and its neuronal lineage and the complete wiring diagram of its nervous system are stereotyped and fully described. The neurotransmission systems are phylogenetically conserved from nematodes to vertebrates, which allows for findings from C. elegans to be extrapolated and further confirmed in vertebrate systems. Different strains of C. elegans offer a new perspective on neurodegenerative processes. Some genes have been found to be related to neurodegeneration induced by metals. Studying these interactions may be an effective tool to slow neuronal loss and deterioration.
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Affiliation(s)
- Felix Antunes Soares
- Departamento de Bioquimica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, 97105-900, Brazil.
| | | | - Daiana Silva Avila
- Universidade Federal do Pampa, Uruguaiana, Rio Grande do Sul, 97508-000, Brazil.
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91
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Xu P, Zhang M, Sheng R, Ma Y. Synthesis and biological evaluation of deferiprone-resveratrol hybrids as antioxidants, Aβ 1-42 aggregation inhibitors and metal-chelating agents for Alzheimer's disease. Eur J Med Chem 2016; 127:174-186. [PMID: 28061347 DOI: 10.1016/j.ejmech.2016.12.045] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/19/2016] [Accepted: 12/21/2016] [Indexed: 01/08/2023]
Abstract
A series of deferiprone-resveratrol hybrids have been designed and synthesized as multitarget-directed ligands (MTDLs) through merging the chelating moiety 3-hydroxypyridin-4-one into the structure of resveratrol, a natural antioxidant agent and β-amyloid peptide (Aβ) aggregation inhibitor. The in vitro biological evaluation revealed that most of these newly synthesized compounds exhibited good inhibitory activity against self-induced Aβ1-42 aggregation, excellent antioxidant activity and potent metal chelating capability. Compounds 3i and 4f were identified as the most promising MTDLs with triple functions, possessing micromolar IC50 values for Aβ1-42 aggregation inhibition, greater 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS•+) scavenging activity than Trolox and similar pFe(III) values to that of deferiprone.
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Affiliation(s)
- Ping Xu
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, 311402 Zhejiang, PR China
| | - Minkui Zhang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058 Zhejiang, PR China
| | - Rong Sheng
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058 Zhejiang, PR China.
| | - Yongmin Ma
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, 311402 Zhejiang, PR China.
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92
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Santos MA, Chand K, Chaves S. Recent progress in multifunctional metal chelators as potential drugs for Alzheimer's disease. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.04.013] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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93
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Mishra A, Jiang Y, Roberts S, Ntziachristos V, Westmeyer GG. Near-Infrared Photoacoustic Imaging Probe Responsive to Calcium. Anal Chem 2016; 88:10785-10789. [DOI: 10.1021/acs.analchem.6b03039] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Anurag Mishra
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Institute of Developmental Genetics, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Yuanyuan Jiang
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Institute of Developmental Genetics, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Sheryl Roberts
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Institute of Developmental Genetics, Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Department of Nuclear
Medicine, Technical University of Munich, 81675 Munich, Germany
| | - Vasilis Ntziachristos
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Chair for Biological Imaging, Technical University of Munich, 80333 Munich, Germany
| | - Gil G. Westmeyer
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Institute of Developmental Genetics, Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Department of Nuclear
Medicine, Technical University of Munich, 81675 Munich, Germany
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94
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Custódio L, Silvestre L, Rocha MI, Rodrigues MJ, Vizetto-Duarte C, Pereira H, Barreira L, Varela J. Methanol extracts from Cystoseira tamariscifolia and Cystoseira nodicaulis are able to inhibit cholinesterases and protect a human dopaminergic cell line from hydrogen peroxide-induced cytotoxicity. PHARMACEUTICAL BIOLOGY 2016; 54:1687-1696. [PMID: 26731087 DOI: 10.3109/13880209.2015.1123278] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 09/12/2015] [Accepted: 11/14/2015] [Indexed: 06/05/2023]
Abstract
Context Marine macroalgae contain several bioactive molecules that may be developed as functional foods, but information about their neuroprotective potential is scarce. Objective The objective of this study is to determine the in vitro antioxidant and neuroprotective features of marine algae from the southern coast of Portugal and to assess the total content of different types of bioactives. Materials and methods Methanol extracts from 21 macroalgal species from the southern Portugal were evaluated for in vitro antioxidant and acetylcholinesterase (AChE) inhibition. Active extracts were further evaluated for inhibitory activity against butyrylcholinesterase (BuChE) and tyrosinase (TYRO), and for their ability to attenuate hydrogen peroxide (H2O2)-induced toxicity in SH-SY5Y cells. The total contents of different phenolic groups were determined for the most active extracts. Results Cystoseira tamariscifolia (Hudson) Papenfuss (Sargassaceae) had the highest antiradical activity (92%, 1 mg/mL). Cystoseira nodicaulis (Withering) M. Roberts (Sargassaceae) (75%) and Cystoseira humilis Schousboe ex Kützing (Sargassaceae) (70%) had the highest iron-chelating activity at 10 mg/mL. Cystoseira baccata (S.G. Gmelin) P.C. Silva (Sargassaceae) was more active towards copper (66%, 10 mg/mL). Cystoseira tamariscifolia had the highest AChE inhibitory capacity (85%, 10 mg/mL). Cystoseira tamariscifolia and C. nodicaulis were also active against BuChE and TYRO, and were able to protect SH-SY5Y cells against oxidative stress induced by H2O2. Cystoseira tamariscifolia had the highest content of all the groups of phenolics, and was particularly enriched in hydroxycinnamic acids (106 mg CAE/g DW). Discussion and conclusion Results indicate that C. tamariscifolia and C. nodicaulis are important sources of nutraceutical compounds and may be considered functional foods that could improve cognitive functions.
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Affiliation(s)
- Luísa Custódio
- a Center of Marine Sciences, University of Algarve, Faculty of Sciences and Technology , Faro , Portugal
| | - Laura Silvestre
- a Center of Marine Sciences, University of Algarve, Faculty of Sciences and Technology , Faro , Portugal
| | - Maria Isabel Rocha
- a Center of Marine Sciences, University of Algarve, Faculty of Sciences and Technology , Faro , Portugal
| | - Maria João Rodrigues
- a Center of Marine Sciences, University of Algarve, Faculty of Sciences and Technology , Faro , Portugal
| | - Catarina Vizetto-Duarte
- a Center of Marine Sciences, University of Algarve, Faculty of Sciences and Technology , Faro , Portugal
| | - Hugo Pereira
- a Center of Marine Sciences, University of Algarve, Faculty of Sciences and Technology , Faro , Portugal
| | - Luísa Barreira
- a Center of Marine Sciences, University of Algarve, Faculty of Sciences and Technology , Faro , Portugal
| | - João Varela
- a Center of Marine Sciences, University of Algarve, Faculty of Sciences and Technology , Faro , Portugal
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95
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Lu Q, Tang Q, Xiong Y, Qing G, Sun T. Protein/Peptide Aggregation and Amyloidosis on Biointerfaces. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E740. [PMID: 28773858 PMCID: PMC5457079 DOI: 10.3390/ma9090740] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 08/12/2016] [Accepted: 08/25/2016] [Indexed: 12/27/2022]
Abstract
Recently, studies of protein/peptide aggregation, particularly the amyloidosis, have attracted considerable attention in discussions of the pathological mechanisms of most neurodegenerative diseases. The protein/peptide aggregation processes often occur at the membrane-cytochylema interface in vivo and behave differently from those occurring in bulk solution, which raises great interest to investigate how the interfacial properties of artificial biomaterials impact on protein aggregation. From the perspective of bionics, current progress in this field has been obtained mainly from four aspects: (1) hydrophobic-hydrophilic interfaces; (2) charged surface; (3) chiral surface; and (4) biomolecule-related interfaces. The specific physical and chemical environment provided by these interfaces is reported to strongly affect the adsorption of proteins, transition of protein conformation, and diffusion of proteins on the biointerface, all of which are ultimately related to protein assembly. Meanwhile, these compelling results of in vitro experiments can greatly promote the development of early diagnostics and therapeutics for the relevant neurodegenerative diseases. This paper presents a brief review of these appealing studies, and particular interests are placed on weak interactions (i.e., hydrogen bonding and stereoselective interactions) that are also non-negligible in driving amyloid aggregation at the interfaces. Moreover, this paper also proposes the future perspectives, including the great opportunities and challenges in this field as well.
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Affiliation(s)
- Qi Lu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Qiuhan Tang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Yuting Xiong
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Guangyan Qing
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Taolei Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
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96
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Qu H, Csordas AT, Wang J, Oh SS, Eisenstein MS, Soh HT. Rapid and Label-Free Strategy to Isolate Aptamers for Metal Ions. ACS NANO 2016; 10:7558-65. [PMID: 27399153 PMCID: PMC5653223 DOI: 10.1021/acsnano.6b02558] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Generating aptamers that bind to specific metal ions is challenging because existing aptamer discovery methods typically require chemical labels or modifications that can alter the structure and properties of the ions. In this work, we report an aptamer discovery method that enables us to generate high-quality structure-switching aptamers (SSAs) that undergo a conformational change upon binding a metal ion target, without the requirement of labels or chemical modifications. Our method is more efficient than conventional selection methods because it enables direct measurement of target binding via fluorescence-activated cell sorting (FACS), isolating only the desired aptamers with the highest affinity. Using this strategy, we obtained a highly specific DNA SSA with ∼30-fold higher affinity than the best aptamer for Hg(2+) in the literature. We also discovered DNA aptamers that bind to Cu(2+) with excellent affinity and specificity. Both aptamers were obtained within four rounds of screening, demonstrating the efficiency of our aptamer discovery method. Given the growing availability of FACS, we believe our method offers a general strategy for discovering high-quality aptamers for other ions and small-molecule targets in an efficient and reproducible manner.
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Affiliation(s)
- Hao Qu
- College of Food Science and Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Andrew T. Csordas
- Materials Department, University of California at Santa Barbara, Santa Barbara, California 93111, United States
| | - Jinpeng Wang
- Aptitude Medical Systems, Santa Barbara, California 93105, United States
| | - Seung Soo Oh
- Department of Molecular Biology, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Michael S. Eisenstein
- Materials Department, University of California at Santa Barbara, Santa Barbara, California 93111, United States
| | - Hyongsok Tom Soh
- Department of Electrical Engineering and Department of Radiology, Stanford University, Stanford, California 94305, United States
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97
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Romero MB, Polizzi P, Chiodi L, Das K, Gerpe M. The role of metallothioneins, selenium and transfer to offspring in mercury detoxification in Franciscana dolphins (Pontoporia blainvillei). MARINE POLLUTION BULLETIN 2016; 109:650-654. [PMID: 27210558 DOI: 10.1016/j.marpolbul.2016.05.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 05/03/2016] [Accepted: 05/04/2016] [Indexed: 06/05/2023]
Abstract
The concentrations of mercury (Hg), selenium (Se) and metallothioneins (MT) were evaluated in fetuses, calves, juveniles and adults of the endangered coastal Franciscana dolphin (Pontoporia blainvillei) from Argentina. Mercury concentrations varied among analyzed tissues (liver, kidney, muscle and brain), with liver showing the higher concentrations in all specimens. An age-dependent accumulation was found in liver, kidney and brain. No significant relationship between Hg and MT concentrations was found for all tissues analyzed. Hepatic Hg molar concentrations were positively correlated with those of Se, indicating a great affinity between these two elements. Furthermore, dark granules of HgSe were observed in Kupffer cells in the liver by electron microscopy, suggesting the role of this macrophage in the detoxification of Hg. A transfer of Hg through placenta was proved. The presence of Hg in brain in all age classes did not show concentrations associated with neurotoxicity.
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Affiliation(s)
- M B Romero
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata (UNMDP), Toxicología Ambiental, Dpto. Ciencias Marinas, FCEyN, Funes 3350, 7600 Mar del Plata, Argentina.
| | - P Polizzi
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata (UNMDP), Toxicología Ambiental, Dpto. Ciencias Marinas, FCEyN, Funes 3350, 7600 Mar del Plata, Argentina
| | - L Chiodi
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata (UNMDP), Toxicología Ambiental, Dpto. Ciencias Marinas, FCEyN, Funes 3350, 7600 Mar del Plata, Argentina
| | - K Das
- Laboratory for Oceanology, MARE Center B6c, University of Liege, Liege 4000, Belgium
| | - M Gerpe
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata (UNMDP), Toxicología Ambiental, Dpto. Ciencias Marinas, FCEyN, Funes 3350, 7600 Mar del Plata, Argentina
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98
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Dell’Acqua S, Pirota V, Monzani E, Camponeschi F, De Ricco R, Valensin D, Casella L. Copper(I) Forms a Redox-Stable 1:2 Complex with α-Synuclein N-Terminal Peptide in a Membrane-Like Environment. Inorg Chem 2016; 55:6100-6. [DOI: 10.1021/acs.inorgchem.6b00641] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Simone Dell’Acqua
- Dipartimento
di Chimica, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Valentina Pirota
- Dipartimento
di Chimica, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Enrico Monzani
- Dipartimento
di Chimica, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Francesca Camponeschi
- Dipartimento
di Biotecnologie, Chimica e Farmacia, Università di Siena, Via Aldo Moro
2, 53100 Siena, Italy
| | - Riccardo De Ricco
- Dipartimento
di Biotecnologie, Chimica e Farmacia, Università di Siena, Via Aldo Moro
2, 53100 Siena, Italy
| | - Daniela Valensin
- Dipartimento
di Biotecnologie, Chimica e Farmacia, Università di Siena, Via Aldo Moro
2, 53100 Siena, Italy
| | - Luigi Casella
- Dipartimento
di Chimica, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy
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99
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Jiang H, Wang J, Rogers J, Xie J. Brain Iron Metabolism Dysfunction in Parkinson's Disease. Mol Neurobiol 2016; 54:3078-3101. [PMID: 27039308 DOI: 10.1007/s12035-016-9879-1] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 03/21/2016] [Indexed: 12/15/2022]
Abstract
Dysfunction of iron metabolism, which includes its uptake, storage, and release, plays a key role in neurodegenerative disorders, including Parkinson's disease (PD), Alzheimer's disease, and Huntington's disease. Understanding how iron accumulates in the substantia nigra (SN) and why it specifically targets dopaminergic (DAergic) neurons is particularly warranted for PD, as this knowledge may provide new therapeutic avenues for a more targeted neurotherapeutic strategy for this disease. In this review, we begin with a brief introduction describing brain iron metabolism and its regulation. We then provide a detailed description of how iron accumulates specifically in the SN and why DAergic neurons are especially vulnerable to iron in PD. Furthermore, we focus on the possible mechanisms involved in iron-induced cell death of DAergic neurons in the SN. Finally, we present evidence in support that iron chelation represents a plausable therapeutic strategy for PD.
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Affiliation(s)
- Hong Jiang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Medical College of Qingdao University, Qingdao, 266071, China.
| | - Jun Wang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Medical College of Qingdao University, Qingdao, 266071, China
| | - Jack Rogers
- Neurochemistry Laboratory, Division of Psychiatric Neurosciences and Genetics and Aging Research Unit, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Junxia Xie
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Medical College of Qingdao University, Qingdao, 266071, China.
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100
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Yang Y, Wang X, Cui Q, Cao Q, Li L. Self-Assembly of Fluorescent Organic Nanoparticles for Iron(III) Sensing and Cellular Imaging. ACS APPLIED MATERIALS & INTERFACES 2016; 8:7440-8. [PMID: 26950776 DOI: 10.1021/acsami.6b00065] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Fluorescent organic nanoparticles have attracted increasing attentions for chemical or biological sensing and imaging due to their low-toxicity, facile fabrication and surface functionalization. In this work, we report novel fluorescent organic nanoparticles via facile self-assembly method in aqueous solution. First, the designed water-soluble fluorophore shows a weak and negligible intrinsic fluorescence in water. Upon binding with adenosine-5'-triphosphate (ATP), fluorescent nanoparticles were formed immediately with strongly enhanced fluorescence. These fluorescent nanoparticles exhibit high sensitivity and selectivity toward Fe(3+) sensing with detection limit of 0.1 nM. In addition, after incubation with HeLa cells, the fluorophore shows excellent imaging performance by interaction with entogenous ATP in cells. Finally, this fluorescent system is also demonstrated to be capable of Fe(3+) sensing via fluorescence quenching in cellular environment.
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Affiliation(s)
- Yu Yang
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Xiaoyu Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Qianling Cui
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Qian Cao
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Lidong Li
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
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