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Bekmagambetov A, Shkraba E, Yeskendir A, Akhmadi A, Utepbergenov D. cPGA hydrolase assay of DJ-1 in crude cell lysates: Implications for sensing of oxidative stress. Anal Biochem 2024; 694:115631. [PMID: 39084336 DOI: 10.1016/j.ab.2024.115631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 07/23/2024] [Accepted: 07/27/2024] [Indexed: 08/02/2024]
Abstract
Cyclic 3-phosphosphoglyceric anhydride (cPGA), a side product of glycolysis, acylates cellular amines and thiols to form amides and thioesters, respectively. Since these acylation reactions are harmful, organisms rely on a protein, known as DJ-1 in humans, to inactivate cPGA. Inactivation of cPGA likely plays a significant role in cytoprotection by DJ-1, but further progress in this direction is hampered by the lack of quantitative assays to measure the cPGA hydrolase activity of DJ-1 in biological samples. Here we report an optimized procedure for preparation of cPGA which is then used as a substrate to quantify enzymatic activity of DJ-1. The end-point assay for cPGA hydrolase uses dilute cell lysates to hydrolyze cPGA for 0.5-3.5 min followed by conversion of the remaining cPGA into thioester for spectrophotometric quantitation. We illustrate the utility of this assay by showing that higher levels of cPGA hydrolase activity result in better protection from acylation by cPGA. Moreover, the decrease of cPGA hydrolase activity due to oxidation of the catalytic cysteine of DJ-1 under oxidative stress and its subsequent recovery can be monitored using the assay. This relatively simple assay allows functional characterization of DJ-1 in biological samples through quantitative assessment of its cPGA hydrolase activity.
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Affiliation(s)
- Adilet Bekmagambetov
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Evelina Shkraba
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Adilkhan Yeskendir
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Aizhan Akhmadi
- Graduate Program in Biology, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan.
| | - Darkhan Utepbergenov
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan.
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Yang Y, Nie X, Wang Y, Sun J, Gao X, Zhang J. Evolving insights into erythrocytes in synucleinopathies. Trends Neurosci 2024:S0166-2236(24)00119-X. [PMID: 39043489 DOI: 10.1016/j.tins.2024.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 06/10/2024] [Accepted: 06/21/2024] [Indexed: 07/25/2024]
Abstract
Synucleinopathies, including Parkinson's disease (PD), multiple system atrophy (MSA), and dementia with Lewy bodies (DLB), are characterized by neuronal loss accompanied by α-synuclein (α-syn) accumulation in the brain. While research conventionally focused on brain pathology, there is growing interest in peripheral alterations. Erythrocytes, which are rich in α-syn, have emerged as a compelling site for synucleinopathies-related alterations. Erythrocyte-derived extracellular vesicles (EVs), containing pathological α-syn species, can traverse the blood-brain barrier (BBB) under certain conditions and the gastrointestinal tract, where α-syn and gut microbiota interact extensively. This review explores the accumulating evidence of erythrocyte involvement in synucleinopathies, as well as their potential in disease pathogenesis and diagnosis. Given their unique properties, erythrocytes and erythrocyte-derived EVs may also serve as an ideal therapeutic platform for treating synucleinopathies and beyond.
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Affiliation(s)
- Ying Yang
- Department of Pathology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoqian Nie
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Zhejiang, China
| | - Yajie Wang
- Department of Cell Biology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, China; Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Zhejiang, China; Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Zhejiang, China
| | - Jie Sun
- Department of Cell Biology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, China; Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Zhejiang, China; Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Zhejiang, China
| | - Xiaofei Gao
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Zhejiang, China.
| | - Jing Zhang
- Department of Pathology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; National Health and Disease Human Brain Tissue Resource Center, Zhejiang University, Hangzhou, Zhejiang, China.
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3
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Lind-Holm Mogensen F, Sousa C, Ameli C, Badanjak K, Pereira SL, Muller A, Kaoma T, Coowar D, Scafidi A, Poovathingal SK, Tziortziou M, Antony PMA, Nicot N, Ginolhac A, Vogt Weisenhorn DM, Wurst W, Poli A, Nazarov PV, Skupin A, Grünewald A, Michelucci A. PARK7/DJ-1 deficiency impairs microglial activation in response to LPS-induced inflammation. J Neuroinflammation 2024; 21:174. [PMID: 39014482 PMCID: PMC11253405 DOI: 10.1186/s12974-024-03164-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 07/03/2024] [Indexed: 07/18/2024] Open
Abstract
BACKGROUND Specific microglia responses are thought to contribute to the development and progression of neurodegenerative diseases, including Parkinson's disease (PD). However, the phenotypic acquisition of microglial cells and their role during the underlying neuroinflammatory processes remain largely elusive. Here, according to the multiple-hit hypothesis, which stipulates that PD etiology is determined by a combination of genetics and various environmental risk factors, we investigate microglial transcriptional programs and morphological adaptations under PARK7/DJ-1 deficiency, a genetic cause of PD, during lipopolysaccharide (LPS)-induced inflammation. METHODS Using a combination of single-cell RNA-sequencing, bulk RNA-sequencing, multicolor flow cytometry and immunofluorescence analyses, we comprehensively compared microglial cell phenotypic characteristics in PARK7/DJ-1 knock-out (KO) with wildtype littermate mice following 6- or 24-h intraperitoneal injection with LPS. For translational perspectives, we conducted corresponding analyses in human PARK7/DJ-1 mutant induced pluripotent stem cell (iPSC)-derived microglia and murine bone marrow-derived macrophages (BMDMs). RESULTS By excluding the contribution of other immune brain resident and peripheral cells, we show that microglia acutely isolated from PARK7/DJ-1 KO mice display a distinct phenotype, specially related to type II interferon and DNA damage response signaling, when compared with wildtype microglia, in response to LPS. We also detected discrete signatures in human PARK7/DJ-1 mutant iPSC-derived microglia and BMDMs from PARK7/DJ-1 KO mice. These specific transcriptional signatures were reflected at the morphological level, with microglia in LPS-treated PARK7/DJ-1 KO mice showing a less amoeboid cell shape compared to wildtype mice, both at 6 and 24 h after acute inflammation, as also observed in BMDMs. CONCLUSIONS Taken together, our results show that, under inflammatory conditions, PARK7/DJ-1 deficiency skews microglia towards a distinct phenotype characterized by downregulation of genes involved in type II interferon signaling and a less prominent amoeboid morphology compared to wildtype microglia. These findings suggest that the underlying oxidative stress associated with the lack of PARK7/DJ-1 affects microglia neuroinflammatory responses, which may play a causative role in PD onset and progression.
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Affiliation(s)
- Frida Lind-Holm Mogensen
- Neuro-Immunology Group, Department of Cancer Research, Luxembourg Institute of Health, 6A, rue Nicolas-Ernest Barblé, L-1210, Luxembourg, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, L-4365, Esch-sur-Alzette, Luxembourg
| | - Carole Sousa
- Neuro-Immunology Group, Department of Cancer Research, Luxembourg Institute of Health, 6A, rue Nicolas-Ernest Barblé, L-1210, Luxembourg, Luxembourg
- International Iberian Nanotechnology Laboratory, 4715-330, Braga, Portugal
| | - Corrado Ameli
- Integrative Cell Signalling Group, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, L-4362, Esch-sur-Alzette, Luxembourg
| | - Katja Badanjak
- Molecular and Functional Neurobiology Group, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, L-4362, Esch-sur-Alzette, Luxembourg
| | - Sandro L Pereira
- Molecular and Functional Neurobiology Group, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, L-4362, Esch-sur-Alzette, Luxembourg
| | - Arnaud Muller
- Bioinformatics Platform, Department of Medical Informatics, Luxembourg Institute of Health, L-1445, Strassen, Luxembourg
- LuxGen Genome Center, Luxembourg Institute of Health and Laboratoire National de Santé, L-3555, Dudelange, Luxembourg
| | - Tony Kaoma
- Bioinformatics Platform, Department of Medical Informatics, Luxembourg Institute of Health, L-1445, Strassen, Luxembourg
| | - Djalil Coowar
- Rodent Platform, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, L-4362, Esch-sur-Alzette, Luxembourg
| | - Andrea Scafidi
- Neuro-Immunology Group, Department of Cancer Research, Luxembourg Institute of Health, 6A, rue Nicolas-Ernest Barblé, L-1210, Luxembourg, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, L-4365, Esch-sur-Alzette, Luxembourg
| | - Suresh K Poovathingal
- Integrative Cell Signalling Group, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, L-4362, Esch-sur-Alzette, Luxembourg
- Single Cell Analytics and Microfluidics Core, Vlaams Instituut Voor Biotechnologie-KU Leuven, 3000, Louvain, Belgium
| | - Maria Tziortziou
- Molecular and Functional Neurobiology Group, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, L-4362, Esch-sur-Alzette, Luxembourg
| | - Paul M A Antony
- Bioimaging Platform, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, L-4362, Esch-sur-Alzette, Luxembourg
| | - Nathalie Nicot
- LuxGen Genome Center, Luxembourg Institute of Health and Laboratoire National de Santé, L-3555, Dudelange, Luxembourg
| | - Aurélien Ginolhac
- Department of Life Sciences and Medicine, Faculty of Science, Technology and Medicine, University of Luxembourg, L-4365, Esch-sur-Alzette, Luxembourg
| | - Daniela M Vogt Weisenhorn
- Institute of Developmental Genetics, Helmholtz Zentrum München-German Research Center for Environmental Health, 85764, Neuherberg, Germany
- Technische Universität München-Weihenstephan, 85354, Freising, Germany
| | - Wolfgang Wurst
- Institute of Developmental Genetics, Helmholtz Zentrum München-German Research Center for Environmental Health, 85764, Neuherberg, Germany
- Technische Universität München-Weihenstephan, 85354, Freising, Germany
- German Center for Neurodegenerative Diseases (DZNE), 81377, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany
- Deutsche Zentrum für Psychische Gesundheit (DZPG), 80336, Munich, Germany
| | - Aurélie Poli
- Neuro-Immunology Group, Department of Cancer Research, Luxembourg Institute of Health, 6A, rue Nicolas-Ernest Barblé, L-1210, Luxembourg, Luxembourg
| | - Petr V Nazarov
- Bioinformatics Platform, Department of Medical Informatics, Luxembourg Institute of Health, L-1445, Strassen, Luxembourg
- Multiomics Data Science Group, Department of Cancer Research, Luxembourg Institute of Health, L-1445, Strassen, Luxembourg
| | - Alexander Skupin
- Integrative Cell Signalling Group, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, L-4362, Esch-sur-Alzette, Luxembourg
- Department of Neuroscience, University of California San Diego, La Jolla, CA, 92093, USA
- Integrative Biophysics, Department of Physics and Material Science, University of Luxembourg, L-1511, Luxembourg, Luxembourg
| | - Anne Grünewald
- Molecular and Functional Neurobiology Group, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, L-4362, Esch-sur-Alzette, Luxembourg
- Institute of Neurogenetics, University of Lübeck, 23538, Lübeck, Germany
| | - Alessandro Michelucci
- Neuro-Immunology Group, Department of Cancer Research, Luxembourg Institute of Health, 6A, rue Nicolas-Ernest Barblé, L-1210, Luxembourg, Luxembourg.
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Dhinesh Kumar M, Karthikeyan M, Kaniraja G, Muthukumar K, Muneeswaran G, Karunakaran C. Computational modelling and optimization studies of electropentamer for molecular imprinting of DJ-1. J Mol Graph Model 2024; 128:108715. [PMID: 38306790 DOI: 10.1016/j.jmgm.2024.108715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/12/2024] [Accepted: 01/12/2024] [Indexed: 02/04/2024]
Abstract
Parkinson's disease (PD) is the most prevalent type of incurable movement disorder. Recent research findings propose that the familial PD-associated molecule DJ-1 exists in cerebrospinal fluid (CSF) and that its levels may be altered as Parkinson's disease advances. By using a molecularly imprinted polymer (MIP) as an artificial receptor, it becomes possible to create a functional MIP with predetermined selectivity for various templates, particularly for the DJ-1 biomarker associated with Parkinson's disease. It mostly depends on molecular recognition via interactions between functional monomers and template molecules. So, the computational methods for the appropriate choice of functional monomers for creating molecular imprinting electropolymers (MIEPs) with particular recognition for the detection of DJ-1, a pivotal biomarker involved in PD, are undertaken in this study. Here, molecular docking, molecular dynamics simulations (MD), molecular mechanics Poisson-Boltzmann surface area (MM-PBSA) methods, and quantum mechanical calculation have been applied to investigate the intermolecular interaction between DJ-1 and several functional electropentamers, viz., polypyrrole (PPy), poly(3,4-ethylenedioxythiophene) (PEDOT), poly(o-aminophenol) (POAP), and polythiophene (PTS). In this context, the electropentamers were selected to mimic the imprinted electropolymer system. We analyzed the most stable configurations of the formed complexes involving DJ-1 and electropentamers as a model system for MIEPs. Among these, PEDOT exhibited a more uniform arrangement around DJ-1, engaging in numerous van der Waals, H-bond, electrostatic, and hydrophobic interactions. Hence, it can be regarded as a preferable choice for synthesizing a MIP for DJ-1 recognition. Thus, it will aid in selecting a suitable functional monomer, which is of greater significance in the design and development of selective DJ-1/MIP sensors.
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Affiliation(s)
- Marimuthu Dhinesh Kumar
- Biomedical Research Laboratory, Department of Chemistry, Virudhunagar Hindu Nadars' Senthikumara Nadar College (Autonomous & Affiliated to Madurai Kamaraj University), Virudhunagar, 626 001, Tamil Nadu, India
| | - Murugesan Karthikeyan
- Biomedical Research Laboratory, Department of Chemistry, Virudhunagar Hindu Nadars' Senthikumara Nadar College (Autonomous & Affiliated to Madurai Kamaraj University), Virudhunagar, 626 001, Tamil Nadu, India
| | - Ganesan Kaniraja
- Biomedical Research Laboratory, Department of Chemistry, Virudhunagar Hindu Nadars' Senthikumara Nadar College (Autonomous & Affiliated to Madurai Kamaraj University), Virudhunagar, 626 001, Tamil Nadu, India
| | | | - Gurusamy Muneeswaran
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Chandran Karunakaran
- Biomedical Research Laboratory, Department of Chemistry, Virudhunagar Hindu Nadars' Senthikumara Nadar College (Autonomous & Affiliated to Madurai Kamaraj University), Virudhunagar, 626 001, Tamil Nadu, India.
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5
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Durmaz Celik N, Ozben S, Ozben T. Unveiling Parkinson's disease through biomarker research: current insights and future prospects. Crit Rev Clin Lab Sci 2024:1-17. [PMID: 38529882 DOI: 10.1080/10408363.2024.2331471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 03/13/2024] [Indexed: 03/27/2024]
Abstract
Parkinson's disease (PD) is a neurodegenerative condition marked by the gradual depletion of dopaminergic neurons in the substantia nigra. Despite substantial strides in comprehending potential causative mechanisms, the validation of biomarkers with unequivocal evidence for routine clinical application remains elusive. Consequently, the diagnosis heavily relies on patients' clinical assessments and medical backgrounds. The imperative need for diagnostic and prognostic biomarkers arises due to the prevailing limitations of treatments, which predominantly address symptoms without modifying the disease course. This comprehensive review aims to elucidate the existing landscape of diagnostic and prognostic biomarkers for PD, drawing insights from contemporary literature.
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Affiliation(s)
- Nazlı Durmaz Celik
- Department of Neurology, Eskisehir Osmangazi University Faculty of Medicine, Eskisehir, Turkey
| | - Serkan Ozben
- Department of Neurology, University of Health Sciences, Antalya Training and Research Hospital, Antalya, Turkey
| | - Tomris Ozben
- Department of Medical Biochemistry, Medical Faculty, Akdeniz University, Antalya, Turkey
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6
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Skou LD, Johansen SK, Okarmus J, Meyer M. Pathogenesis of DJ-1/PARK7-Mediated Parkinson's Disease. Cells 2024; 13:296. [PMID: 38391909 PMCID: PMC10887164 DOI: 10.3390/cells13040296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/28/2024] [Accepted: 02/03/2024] [Indexed: 02/24/2024] Open
Abstract
Parkinson's disease (PD) is a common movement disorder associated with the degeneration of dopaminergic neurons in the substantia nigra pars compacta. Mutations in the PD-associated gene PARK7 alter the structure and function of the encoded protein DJ-1, and the resulting autosomal recessively inherited disease increases the risk of developing PD. DJ-1 was first discovered in 1997 as an oncogene and was associated with early-onset PD in 2003. Mutations in DJ-1 account for approximately 1% of all recessively inherited early-onset PD occurrences, and the functions of the protein have been studied extensively. In healthy subjects, DJ-1 acts as an antioxidant and oxidative stress sensor in several neuroprotective mechanisms. It is also involved in mitochondrial homeostasis, regulation of apoptosis, chaperone-mediated autophagy (CMA), and dopamine homeostasis by regulating various signaling pathways, transcription factors, and molecular chaperone functions. While DJ-1 protects neurons against damaging reactive oxygen species, neurotoxins, and mutant α-synuclein, mutations in the protein may lead to inefficient neuroprotection and the progression of PD. As current therapies treat only the symptoms of PD, the development of therapies that directly inhibit oxidative stress-induced neuronal cell death is critical. DJ-1 has been proposed as a potential therapeutic target, while oxidized DJ-1 could operate as a biomarker for PD. In this paper, we review the role of DJ-1 in the pathogenesis of PD by highlighting some of its key neuroprotective functions and the consequences of its dysfunction.
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Affiliation(s)
- Line Duborg Skou
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5230 Odense, Denmark; (L.D.S.); (S.K.J.); (J.O.)
| | - Steffi Krudt Johansen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5230 Odense, Denmark; (L.D.S.); (S.K.J.); (J.O.)
| | - Justyna Okarmus
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5230 Odense, Denmark; (L.D.S.); (S.K.J.); (J.O.)
| | - Morten Meyer
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5230 Odense, Denmark; (L.D.S.); (S.K.J.); (J.O.)
- Department of Neurology, Odense University Hospital, 5000 Odense, Denmark
- BRIDGE—Brain Research Inter-Disciplinary Guided Excellence, Department of Clinical Research, University of Southern Denmark, 5000 Odense, Denmark
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7
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Choong CJ, Mochizuki H. Involvement of Mitochondria in Parkinson's Disease. Int J Mol Sci 2023; 24:17027. [PMID: 38069350 PMCID: PMC10707101 DOI: 10.3390/ijms242317027] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 11/28/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
Mitochondrial dysregulation, such as mitochondrial complex I deficiency, increased oxidative stress, perturbation of mitochondrial dynamics and mitophagy, has long been implicated in the pathogenesis of PD. Initiating from the observation that mitochondrial toxins cause PD-like symptoms and mitochondrial DNA mutations are associated with increased risk of PD, many mutated genes linked to familial forms of PD, including PRKN, PINK1, DJ-1 and SNCA, have also been found to affect the mitochondrial features. Recent research has uncovered a much more complex involvement of mitochondria in PD. Disruption of mitochondrial quality control coupled with abnormal secretion of mitochondrial contents to dispose damaged organelles may play a role in the pathogenesis of PD. Furthermore, due to its bacterial ancestry, circulating mitochondrial DNAs can function as damage-associated molecular patterns eliciting inflammatory response. In this review, we summarize and discuss the connection between mitochondrial dysfunction and PD, highlighting the molecular triggers of the disease process, the intra- and extracellular roles of mitochondria in PD as well as the therapeutic potential of mitochondrial transplantation.
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Affiliation(s)
| | - Hideki Mochizuki
- Department of Neurology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita 565-0871, Osaka, Japan;
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8
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Tsoporis JN, Amatullah H, Gupta S, Izhar S, Ektesabi AM, Vaswani CM, Desjardins JF, Kabir G, Teixera Monteiro AP, Varkouhi AK, Kavantzas N, Salpeas V, Rizos I, Marshall JC, Parker TG, Leong-Poi H, Dos Santos CC. DJ-1 Deficiency Protects against Sepsis-Induced Myocardial Depression. Antioxidants (Basel) 2023; 12:antiox12030561. [PMID: 36978809 PMCID: PMC10045744 DOI: 10.3390/antiox12030561] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/07/2023] [Accepted: 02/20/2023] [Indexed: 03/30/2023] Open
Abstract
Oxidative stress is considered one of the early underlying contributors of sepsis-induced myocardial depression. DJ-1, also known as PARK7, has a well-established role as an antioxidant. We have previously shown, in a clinically relevant model of polymicrobial sepsis, DJ-1 deficiency improved survival and bacterial clearance by decreasing ROS production. In the present study, we investigated the role of DJ-1 in sepsis-induced myocardial depression. Here we compared wildtype (WT) with DJ-1 deficient mice at 24 and 48 h after cecal ligation and puncture (CLP). In WT mice, DJ-1 was increased in the myocardium post-CLP. DJ-1 deficient mice, despite enhanced inflammatory and oxidative responses, had an attenuated hypertrophic phenotype, less apoptosis, improved mitochondrial function, and autophagy, that was associated with preservation of myocardial function and improved survival compared to WT mice post-CLP. Collectively, these results identify DJ-1 as a regulator of myocardial function and as such, makes it an attractive therapeutic target in the treatment of early sepsis-induced myocardial depression.
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Affiliation(s)
- James N Tsoporis
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
| | - Hajera Amatullah
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Sahil Gupta
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Shehla Izhar
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
| | - Amin M Ektesabi
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Chirag M Vaswani
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Jean-Francois Desjardins
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
| | - Golam Kabir
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
| | - Ana Paula Teixera Monteiro
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
| | - Amir K Varkouhi
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
| | - Nikolaos Kavantzas
- 1st Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, 11528 Athens, Greece
| | - Vasileios Salpeas
- 1st Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, 11528 Athens, Greece
| | - Ioannis Rizos
- 2nd Department of Cardiology, Attikon University Hospital, 12462 Athens, Greece
| | - John C Marshall
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Thomas G Parker
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
| | - Howard Leong-Poi
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
| | - Claudia C Dos Santos
- The Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
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9
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Dhinesh Kumar M, Karthikeyan M, Sharma N, Raju V, Vatsalarani J, Kalivendi SV, Karunakaran C. Molecular imprinting synthetic receptor based sensor for determination of Parkinson's disease biomarker DJ-1. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Liu R, Li K, Yang T, Yang L, Qin M, Yu H, Wu M, Ge Q, Bao W, Wu S. Exploring the role of protein DJ-1 in quality of pale, soft and exudative (PSE) and red, firm and non-exudative (RFN) pork during post-mortem aging. Food Chem 2022; 398:133817. [DOI: 10.1016/j.foodchem.2022.133817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 05/10/2022] [Accepted: 07/25/2022] [Indexed: 11/27/2022]
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11
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Huang M, Chen S. DJ-1 in neurodegenerative diseases: Pathogenesis and clinical application. Prog Neurobiol 2021; 204:102114. [PMID: 34174373 DOI: 10.1016/j.pneurobio.2021.102114] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/22/2021] [Accepted: 06/21/2021] [Indexed: 12/23/2022]
Abstract
Neurodegenerative diseases (NDs) are one of the major health threats to human characterized by selective and progressive neuronal loss. The mechanisms of NDs are still not fully understood. The study of genetic defects and disease-related proteins offers us a window into the mystery of it, and the extension of knowledge indicates that different NDs share similar features, mechanisms, and even genetic or protein abnormalities. Among these findings, PARK7 and its production DJ-1 protein, which was initially found implicated in PD, have also been found altered in other NDs. PARK7 mutations, altered expression and posttranslational modification (PTM) cause DJ-1 abnormalities, which in turn lead to downstream mechanisms shared by most NDs, such as mitochondrial dysfunction, oxidative stress, protein aggregation, autophagy defects, and so on. The knowledge of DJ-1 derived from PD researches might apply to other NDs in both basic research and clinical application, and might yield novel insights into and alternative approaches for dealing with NDs.
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Affiliation(s)
- Maoxin Huang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, China
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, China; Lab for Translational Research of Neurodegenerative Diseases, Institute of Immunochemistry, Shanghai Tech University, 201210, Shanghai, China.
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12
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Intersection between Redox Homeostasis and Autophagy: Valuable Insights into Neurodegeneration. Antioxidants (Basel) 2021; 10:antiox10050694. [PMID: 33924878 PMCID: PMC8146521 DOI: 10.3390/antiox10050694] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 04/25/2021] [Indexed: 12/14/2022] Open
Abstract
Autophagy, a main degradation pathway for maintaining cellular homeostasis, and redox homeostasis have recently been considered to play protective roles in neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. Increased levels of reactive oxygen species (ROS) in neurons can induce mitochondrial damage and protein aggregation, thereby resulting in neurodegeneration. Oxidative stress is one of the major activation signals for the induction of autophagy. Upon activation, autophagy can remove ROS, damaged mitochondria, and aggregated proteins from the cells. Thus, autophagy can be an effective strategy to maintain redox homeostasis in the brain. However, the interaction between redox homeostasis and autophagy is not clearly elucidated. In this review, we discuss recent studies on the relationship between redox homeostasis and autophagy associated with neurodegenerative diseases and propose that autophagy induction through pharmacological intervention or genetic activation might be a promising strategy to treat these disorders.
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13
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Clark EH, Vázquez de la Torre A, Hoshikawa T, Briston T. Targeting mitophagy in Parkinson's disease. J Biol Chem 2021; 296:100209. [PMID: 33372898 PMCID: PMC7948953 DOI: 10.1074/jbc.rev120.014294] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 12/18/2020] [Accepted: 12/18/2020] [Indexed: 12/22/2022] Open
Abstract
The genetics and pathophysiology of Parkinson's disease (PD) strongly implicate mitochondria in disease aetiology. Elegant studies over the last two decades have elucidated complex molecular signaling governing the identification and removal of dysfunctional mitochondria from the cell, a process of mitochondrial quality control known as mitophagy. Mitochondrial deficits and specifically reduced mitophagy are evident in both sporadic and familial PD. Mendelian genetics attributes loss-of-function mutations in key mitophagy regulators PINK1 and Parkin to early-onset PD. Pharmacologically enhancing mitophagy and accelerating the removal of damaged mitochondria are of interest for developing a disease-modifying PD therapeutic. However, despite significant understanding of both PINK1-Parkin-dependent and -independent mitochondrial quality control pathways, the therapeutic potential of targeting mitophagy remains to be fully explored. Here, we provide a summary of the genetic evidence supporting the role for mitophagy failure as a pathogenic mechanism in PD. We assess the tractability of mitophagy pathways and prospects for drug discovery and consider intervention points for mitophagy enhancement. We explore the numerous hit molecules beginning to emerge from high-content/high-throughput screening as well as the biochemical and phenotypic assays that enabled these screens. The chemical and biological properties of these reference compounds suggest many could be used to interrogate and perturb mitochondrial biology to validate promising drug targets. Finally, we address key considerations and challenges in achieving preclinical proof-of-concept, including in vivo mitophagy reporter methodologies and disease models, as well as patient stratification and biomarker development for mitochondrial forms of the disease.
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Affiliation(s)
- Emily H Clark
- Hatfield Research Laboratories, Neurology Innovation Centre, Eisai Ltd, Hatfield, United Kingdom
| | | | - Tamaki Hoshikawa
- Hatfield Research Laboratories, Neurology Innovation Centre, Eisai Ltd, Hatfield, United Kingdom
| | - Thomas Briston
- Hatfield Research Laboratories, Neurology Innovation Centre, Eisai Ltd, Hatfield, United Kingdom.
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14
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Red cell distribution width levels in Parkinson's disease patients. Acta Neurol Belg 2020; 120:1147-1150. [PMID: 31367945 DOI: 10.1007/s13760-019-01197-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 07/23/2019] [Indexed: 12/28/2022]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder with motor and non-motor impairment. It has been known for a while that oxidative stress, protein changes and mitochondrial dysfunction have the role of contribution to the pathogenesis. Disturbance of red blood cell function may play a role in the pathophysiology of neurodegenerative diseases such as Huntington's, Parkinson's and Alzheimer's disease. RDW was found to be strongly associated with inflammatory markers in diseases such as acute pancreatitis, myocardial injury and hepatocellular carcinoma. The data about RDW levels and PD are scarce. In this study, we aimed to investigate the RDW values and their relationship with the severity of the disease in patients with Parkinson's disease. 94 patients with Parkinson's disease were included into the study, 97 healthy individuals without history of PD were considered as control group. The United Parkinson's Disease Rating Scale (UPDRS) and the modified Hoehn and Yahr staging scale were used to assess the severity of PD. Although RDW levels were significantly higher than the healthy subjects, there was not any relation between the severity of PD, duration of the disease, RDW levels, other blood parameters, mean UPDRS score or mean mH&Y score. In conclusion, RDW levels are higher than the healthy subjects in PD patients but there is no relation between RDW levels and disease duration. Larger studies are needed to explain the role of RDW as an inflammatory marker.
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15
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Chang KH, Chen CM. The Role of Oxidative Stress in Parkinson's Disease. Antioxidants (Basel) 2020; 9:antiox9070597. [PMID: 32650609 PMCID: PMC7402083 DOI: 10.3390/antiox9070597] [Citation(s) in RCA: 119] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/03/2020] [Accepted: 07/06/2020] [Indexed: 12/24/2022] Open
Abstract
Parkinson’s disease (PD) is caused by progressive neurodegeneration of dopaminergic (DAergic) neurons with abnormal accumulation of α-synuclein in substantia nigra (SN). Studies have suggested the potential involvement of dopamine, iron, calcium, mitochondria and neuroinflammation in contributing to overwhelmed oxidative stress and neurodegeneration in PD. Function studies on PD-causative mutations of SNCA, PRKN, PINK1, DJ-1, LRRK2, FBXO7 and ATP13A2 further indicate the role of oxidative stress in the pathogenesis of PD. Therefore, it is reasonable that molecules involved in oxidative stress, such as DJ-1, coenzyme Q10, uric acid, 8-hydroxy-2’-deoxyguanosin, homocysteine, retinoic acid/carotenes, vitamin E, glutathione peroxidase, superoxide dismutase, xanthine oxidase and products of lipid peroxidation, could be candidate biomarkers for PD. Applications of antioxidants to modulate oxidative stress could be a strategy in treating PD. Although a number of antioxidants, such as creatine, vitamin E, coenzyme Q10, pioglitazone, melatonin and desferrioxamine, have been tested in clinical trials, none of them have demonstrated conclusive evidence to ameliorate the neurodegeneration in PD patients. Difficulties in clinical studies may be caused by the long-standing progression of neurodegeneration, lack of biomarkers for premotor stage of PD and inadequate drug delivery across blood–brain barrier. Solutions for these challenges will be warranted for future studies with novel antioxidative treatment in PD patients.
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Affiliation(s)
| | - Chiung-Mei Chen
- Correspondence: ; Tel.: +886-3-3281200 (ext. 8347); Fax: +886-3-3288849
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16
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Niki T, Endo J, Takahashi-Niki K, Yasuda T, Okamoto A, Saito Y, Ariga H, Iguchi-Ariga SMM. DJ-1-binding compound B enhances Nrf2 activity through the PI3-kinase-Akt pathway by DJ-1-dependent inactivation of PTEN. Brain Res 2020; 1729:146641. [PMID: 31891690 DOI: 10.1016/j.brainres.2019.146641] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/04/2019] [Accepted: 12/27/2019] [Indexed: 02/05/2023]
Affiliation(s)
- Takeshi Niki
- Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Jinro Endo
- Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Kazuko Takahashi-Niki
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12 Nishi 6, Kita-ku, Sapporo 060-0812, Japan
| | - Tatsuki Yasuda
- Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Asami Okamoto
- Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Yoshiro Saito
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Hiroyoshi Ariga
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12 Nishi 6, Kita-ku, Sapporo 060-0812, Japan.
| | - Sanae M M Iguchi-Ariga
- Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-8589, Japan.
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17
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Pandey S, Garg R. An ongoing search for “biomarkers in Parkinson’s disease”. ANNALS OF MOVEMENT DISORDERS 2020. [DOI: 10.4103/aomd.aomd_6_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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18
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DJ-1 in Parkinson's Disease: Clinical Insights and Therapeutic Perspectives. J Clin Med 2019; 8:jcm8091377. [PMID: 31484320 PMCID: PMC6780414 DOI: 10.3390/jcm8091377] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 12/13/2022] Open
Abstract
Mutations in the protein DJ-1 cause autosomal recessive forms of Parkinson’s disease (PD) and oxidized DJ-1 is found in the brains of idiopathic PD individuals. While several functions have been ascribed to DJ-1 (most notably protection from oxidative stress), its contribution to PD pathogenesis is not yet clear. Here we provide an overview of the clinical research to date on DJ-1 and the current state of knowledge regarding DJ-1 characterization in the human brain. The relevance of DJ-1 as a PD biomarker is also discussed, as are studies exploring DJ-1 as a possible therapeutic target for PD and neurodegeneration.
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19
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Kobayashi M, Muramatsu K, Haruyama T, Uesugi H, Kikuchi A, Konno H, Noguchi N, Saito Y. Polymerization of Oxidized DJ-1 via Noncovalent and Covalent Binding: Significance of Disulfide Bond Formation. ACS OMEGA 2019; 4:9603-9614. [PMID: 31460051 PMCID: PMC6648325 DOI: 10.1021/acsomega.9b00324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 05/21/2019] [Indexed: 02/08/2023]
Abstract
The reactive cysteine residue at position 106 (Cys106) of DJ-1 is preferentially oxidized under oxidative stress, generating oxidized DJ-1 (oxDJ-1). Oxidation of Cys106 to sulfinic acid changes the biologic action of DJ-1 and increases its cytoprotective properties. The similar activation step is known in peroxiredoxins (Prxs), in which oxidation of reactive Cys to sulfinic acid induces polymerization of Prxs and changes its enzyme characteristic from peroxidase to molecular chaperone. In the present study, oxDJ-1 was prepared and its polymerization and related amino acid residues were investigated. We found that oxDJ-1 formed a characteristic polymer with disulfide bonds and with noncovalent and covalent binding other than disulfide. The physiological concentration of glutathione resolved the polymer form of oxDJ-1, and glutathionylation of other two Cys residues, such as Cys 46 and 53, was detected. Mutant analysis indicated the necessity not only of Cys106 but also of Cys46 for the polymer formation. The cellular experiment demonstrated that the electrophilic quinone treatment induced a high-molecular-weight complex containing oxDJ-1. Dynamic polymerization of oxDJ-1 with a ring and a stacked structure was observed by an atomic force microscope. Collectively, these results clearly demonstrated the characteristic polymer formation of oxDJ-1 with a disulfide bond and noncovalent and covalent binding other than disulfide, which might be related to the biologic function of oxDJ-1.
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Affiliation(s)
- Mayuka Kobayashi
- The Systems Life Sciences Laboratory, Department of Life and Medical Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyoto 610-0394, Japan
| | - Kana Muramatsu
- The Systems Life Sciences Laboratory, Department of Life and Medical Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyoto 610-0394, Japan
| | - Takamitsu Haruyama
- Nano Life Science Institute (WPI NanoLSI), Kanazawa University, Kanazawa 920-1192, Japan
- Nara Institute of Science and Technology, Nara 630-0192, Japan
| | - Haruka Uesugi
- The Systems Life Sciences Laboratory, Department of Life and Medical Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyoto 610-0394, Japan
| | - Ai Kikuchi
- The Systems Life Sciences Laboratory, Department of Life and Medical Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyoto 610-0394, Japan
| | - Hiroki Konno
- Nano Life Science Institute (WPI NanoLSI), Kanazawa University, Kanazawa 920-1192, Japan
| | - Noriko Noguchi
- The Systems Life Sciences Laboratory, Department of Life and Medical Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyoto 610-0394, Japan
| | - Yoshiro Saito
- The Systems Life Sciences Laboratory, Department of Life and Medical Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyoto 610-0394, Japan
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
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20
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He R, Yan X, Guo J, Xu Q, Tang B, Sun Q. Recent Advances in Biomarkers for Parkinson's Disease. Front Aging Neurosci 2018; 10:305. [PMID: 30364199 PMCID: PMC6193101 DOI: 10.3389/fnagi.2018.00305] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Accepted: 09/14/2018] [Indexed: 02/04/2023] Open
Abstract
Parkinson's disease (PD) is one of the common progressive neurodegenerative disorders with several motor and non-motor symptoms. Most of the motor symptoms may appear at a late stage where most of the dopaminergic neurons have been already damaged. In order to provide better clinical intervention and treatment at the onset of disease, it is imperative to find accurate biomarkers for early diagnosis, including prodromal diagnosis and preclinical diagnosis. At the same time, these reliable biomarkers can also be utilized to monitor the progress of the disease. In this review article, we will discuss recent advances in the development of PD biomarkers from different aspects, including clinical, biochemical, neuroimaging and genetic aspects. Although various biomarkers for PD have been developed so far, their specificity and sensitivity are not ideal when applied individually. So, the combination of multimodal biomarkers will greatly improve the diagnostic accuracy and facilitate the implementation of personalized medicine.
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Affiliation(s)
- Runcheng He
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Xinxiang Yan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Jifeng Guo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- Parkinson’s Disease Center of Beijing Institute for Brain Disorders, Beijing, China
- Collaborative Innovation Center for Brain Science, Shanghai, China
- Collaborative Innovation Center for Genetics and Development, Shanghai, China
| | - Qian Xu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Beisha Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- Parkinson’s Disease Center of Beijing Institute for Brain Disorders, Beijing, China
- Collaborative Innovation Center for Brain Science, Shanghai, China
- Collaborative Innovation Center for Genetics and Development, Shanghai, China
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Qiying Sun
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
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21
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Mussakhmetov A, Shumilin IA, Nugmanova R, Shabalin IG, Baizhumanov T, Toibazar D, Khassenov B, Minor W, Utepbergenov D. A transient post-translational modification of active site cysteine alters binding properties of the parkinsonism protein DJ-1. Biochem Biophys Res Commun 2018; 504:328-333. [PMID: 30190129 DOI: 10.1016/j.bbrc.2018.08.190] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 08/29/2018] [Indexed: 12/12/2022]
Abstract
Mutations in the human protein DJ-1 cause early onset of Parkinson's disease. A reactive cysteine residue (Cys106) of DJ-1 is crucial for its protective function, although the underlying mechanisms are unclear. Here we show that a fraction of bacterially expressed polyhistidine-tagged human DJ-1 could not be eluted from a Ni-nitrilotriacetate (Ni-NTA) column with 150 mM imidazole. This unusually tight binding was accompanied by the appearance of blue violet color on the Ni-NTA column. We demonstrate by X-ray crystallography that Cys106 is carboxymethylated in a fraction of DJ-1 tightly bound to Ni-NTA and that the replacement of Cys106 by serine abrogates the tight binding and the appearance of blue violet color. However, carboxymethylation of purified DJ-1 is insufficient to confer the tight binding to Ni-NTA. Moreover, when eluted protein was re-applied to the Ni-NTA column, no tight binding was observed, indicating that the formation of high affinity complex with Ni-NTA depends on a transient modification of Cys106 that transforms into a Cys106-carboxymethyl adduct upon elution from Ni-NTA. We conclude that an unknown metabolite reacts with Cys106 of DJ-1 to result in a transient post-translational modification. This modification is distinct from simple oxidation to sulfinic or sulfenic acids and confers altered binding properties to DJ-1 suggesting that it could serve as a signal for sensing oxidant stress.
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Affiliation(s)
| | - Igor A Shumilin
- Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA, 22908, USA
| | - Raushan Nugmanova
- National Center for Biotechnology, Astana, 010000, Kazakhstan; Department of Chemistry, School of Science and Technology, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Ivan G Shabalin
- Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA, 22908, USA
| | - Timur Baizhumanov
- Department of Chemistry, School of Science and Technology, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Daulet Toibazar
- Department of Biology, School of Science and Technology, Nazarbayev University, Astana, 010000, Kazakhstan
| | | | - Wladek Minor
- Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA, 22908, USA
| | - Darkhan Utepbergenov
- Department of Chemistry, School of Science and Technology, Nazarbayev University, Astana, 010000, Kazakhstan.
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22
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Drechsel J, Mandl FA, Sieber SA. Chemical Probe To Monitor the Parkinsonism-Associated Protein DJ-1 in Live Cells. ACS Chem Biol 2018; 13:2016-2019. [PMID: 30011180 DOI: 10.1021/acschembio.8b00633] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Reactive oxygen species (ROS) play an important role in the onset of Parkinson's disease (PD), and deciphering protective mechanisms is a major goal for therapeutic development. Here, DJ-1 (PARK7) gained major attention when a conserved cysteine residue with a putative role in oxidative stress sensing/protection was linked to PD. Inspired by previous studies with a bacterial homologue of DJ-1, several amino-epoxycylcohexenones were screened for enzyme inhibition, and a chemical probe with specificity for the human ortholog was selected for cellular studies. The probe selectively labeled the cysteine oxidation sensor and whole proteome analysis in HeLa, A549, and SHSY5Y cell lines confirmed strong enrichment of reduced DJ-1 as the most prominent target. Increasing levels of oxidative stress diminished this signal demonstrating the utility of our tool compound for selective in situ monitoring of this important biomarker in its reduced state.
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Affiliation(s)
- Jonas Drechsel
- Department of Chemistry, Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
| | - Franziska A. Mandl
- Department of Chemistry, Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
| | - Stephan A. Sieber
- Department of Chemistry, Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
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23
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Urano Y, Mori C, Fuji A, Konno K, Yamamoto T, Yashirogi S, Ando M, Saito Y, Noguchi N. 6-Hydroxydopamine induces secretion of PARK7/DJ-1 via autophagy-based unconventional secretory pathway. Autophagy 2018; 14:1943-1958. [PMID: 30112966 PMCID: PMC6152502 DOI: 10.1080/15548627.2018.1493043] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
PARK7/DJ-1 is a Parkinson disease- and cancer-associated protein that functions as a multifunctional protein involved in gene transcription regulation and anti-oxidative defense. Although PARK7 lacks the secretory signal sequence, it is secreted and plays important physiological and pathophysiological roles. Whereas secretory proteins that lack the endoplasmic reticulum-targeting signal sequence are secreted from cells by way of what is called the unconventional secretion mechanism, the specific processes responsible for causing PARK7 to be secreted across the plasma membrane have remained unclear. In the present study, we found that PARK7 secretion was increased by treatment with 6-OHDA via the unconventional secretory pathway in human neuroblastoma SH-SY5Y cells and MEF cells. We also found that 6-OHDA-induced PARK7 secretion was suppressed in Atg5-, Atg9-, or Atg16l1-deficient MEF cells or ATG16L1 knockdown SH-SY5Y cells, indicating that the autophagy-based unconventional secretory pathway is involved in PARK7 secretion. We moreover observed that 6-OHDA-derived electrophilic quinone induced oxidative stress as indicated by a decrease in glutathione levels, and that this was suppressed by pretreatment with antioxidant NAC. We further found that NAC treatment suppressed autophagy and PARK7 secretion. We also observed that 6-OHDA-induced autophagy was associated with activation of AMPK and ULK1 via a pathway which was independent of MTOR. Collectively these results suggest that electrophilic 6-OHDA quinone enhances oxidative stress, and that this is followed by AMPK-ULK1 pathway activation and induction of secretory autophagy to produce unconventional secretion of PARK7. Abbreviations: 6-OHDA: 6-hydroxydopamine; AMPK: AMP-activated protein kinase; ATG: autophagy related; CAV1: caveolin 1; ER: endoplasmic reticulum; FN1: fibronectin 1; GSH: glutathione; IDE: insulin degrading enzyme; IL: interleukin; LDH: lactate dehydrogenase; MAP1LC3B/LC3B: microtubule associated protein 1 light chain 3 beta; MEF: mouse embryonic fibroblast; MTOR: mechanistic target of rapamycin kinase; NAC: N-acetyl-L-cysteine; PARK7/DJ-1: Parkinsonism associated deglycase; PD: Parkinson disease; RPS6KB1/p70S6K: ribosomal protein S6 kinase B1; RPN1: ribophorin I; ROS: reactive oxygen species; ULK1: unc-51 like autophagy activating kinase 1; WT: wild-type
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Affiliation(s)
- Yasuomi Urano
- a Department of Medical Life Systems, Faculty of Life and Medical Sciences , Doshisha University , Kyoto , Japan
| | - Chinatsu Mori
- a Department of Medical Life Systems, Faculty of Life and Medical Sciences , Doshisha University , Kyoto , Japan
| | - Ayano Fuji
- a Department of Medical Life Systems, Faculty of Life and Medical Sciences , Doshisha University , Kyoto , Japan
| | - Keito Konno
- a Department of Medical Life Systems, Faculty of Life and Medical Sciences , Doshisha University , Kyoto , Japan
| | - Takayuki Yamamoto
- a Department of Medical Life Systems, Faculty of Life and Medical Sciences , Doshisha University , Kyoto , Japan
| | - Shohei Yashirogi
- a Department of Medical Life Systems, Faculty of Life and Medical Sciences , Doshisha University , Kyoto , Japan
| | - Mayu Ando
- a Department of Medical Life Systems, Faculty of Life and Medical Sciences , Doshisha University , Kyoto , Japan
| | - Yoshiro Saito
- a Department of Medical Life Systems, Faculty of Life and Medical Sciences , Doshisha University , Kyoto , Japan
| | - Noriko Noguchi
- a Department of Medical Life Systems, Faculty of Life and Medical Sciences , Doshisha University , Kyoto , Japan
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24
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Bosman GJCGM. Disturbed Red Blood Cell Structure and Function: An Exploration of the Role of Red Blood Cells in Neurodegeneration. Front Med (Lausanne) 2018; 5:198. [PMID: 30062097 PMCID: PMC6054991 DOI: 10.3389/fmed.2018.00198] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 06/15/2018] [Indexed: 01/19/2023] Open
Abstract
The structure of red blood cells is affected by many inborn and acquired factors, but in most cases this does not seem to affect their function or survival in physiological conditions. Often, functional deficits become apparent only when they are subjected to biochemical or mechanical stress in vitro, or to pathological conditions in vivo. Our data on the misshapen red blood cells of patients with neuroacanthocytosis illustrate this general mechanism: an abnormal morphology is associated with an increase in the susceptibility of red blood cells to osmotic and mechanical stress, and alters their rheological properties. The underlying mutations may not only affect red cell function, but also render neurons in specific brain areas more susceptible to a concomitant reduction in oxygen supply. Through this mechanism, an increased susceptibility of already compromised red blood cells to physiological stress conditions may constitute an additional risk factor in vulnerable individuals. Also, susceptibility may be induced or enhanced by systemic pathological conditions such as inflammation. An exploration of the literature suggests that disturbed red blood cell function may play a role in the pathophysiology of various neurodegenerative diseases. Therefore, interventions that reduce the susceptibility of red blood cells to physiological and pathological stress may reduce the extent or progress of neurodegeneration.
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Affiliation(s)
- Giel J C G M Bosman
- Department of Biochemistry, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands
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25
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Oxidized DJ-1 Levels in Urine Samples as a Putative Biomarker for Parkinson's Disease. PARKINSONS DISEASE 2018; 2018:1241757. [PMID: 29887985 PMCID: PMC5985070 DOI: 10.1155/2018/1241757] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 03/25/2018] [Indexed: 12/29/2022]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease. Oxidative stress is the most critical risk factor for neurodegenerative diseases, including Alzheimer's disease (AD) and Huntington's disease (HD). Numerous reports have demonstrated that oxidative stress aggravates cytotoxicity in dopaminergic neurons and accelerates the formation of protein inclusions. In addition, oxidative stress, such as 4-hydroxynonenal (HNE), oxidized protein, and dopamine quinone, are related to PD progression. DJ-1 is a PD-causative gene, and it plays a pivotal role as a sensor and eliminator of oxidative stress. Several studies have shown that oxidized DJ-1 (OxiDJ-1) formation is induced by oxidative stress. Hence, previous studies suggest that oxidized DJ-1 could be a biomarker for PD. We previously reported higher DJ-1 levels in Korean male PD patient urine exosomes than male non-PD controls. We speculate that OxiDJ-1 levels in PD patient urine might be higher than that in non-PD controls. In this study, we established an ELISA for OxiDJ-1 using recombinant DJ-1 treated with H2O2. Using Western blot assay and ELISA, we confirmed an increase of OxiDJ-1 from HEK293T cells treated with H2O2. Using our ELISA, we observed significantly higher, 2-fold, OxiDJ-1 levels in the urine of Korean PD patients than in non-PD controls.
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Saito Y. DJ-1 as a Biomarker of Parkinson's Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1037:149-171. [PMID: 29147908 DOI: 10.1007/978-981-10-6583-5_10] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Parkinson's disease is a progressive, age-related, neurodegenerative disorder, and oxidative stress is an important mediator in its pathogenesis. DJ-1 has been identified as a causative gene of a familial form of Parkinson's disease, PARK7, and plays a significant role in antioxidative defense, protecting cells from oxidative stress. A cysteine residue of DJ-1 at position 106 (Cys-106) is preferentially oxidized under oxidative stress. This reactive Cys-106 plays a critical role in the biological function of DJ-1, which could act as a sensor of oxidative stress by regulating antioxidative defense depending on Cys-106 oxidation. Thus, the levels of Cys-106-oxidized DJ-1 (oxDJ-1) could be a possible biomarker of oxidative stress. This chapter focuses on the properties of DJ-1 and oxDJ-1 levels as a biomarker of Parkinson's disease. In particular, the usability of these biomarkers to prevent and treat this neurodegenerative disease is discussed. Further, this section deals with the importance of identifying a biomarker of early-phase Parkinson's disease. Finally, this chapter summarizes the features of oxDJ-1 levels in the brain and blood as a biomarker candidate for early-phase Parkinson's disease based on our results using oxDJ-1-specific antibodies.
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Affiliation(s)
- Yoshiro Saito
- Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Miyakodani, Tatara, Kyotanabe, Kyoto, 610-0394, Japan.
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27
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Piston D, Alvarez-Erviti L, Bansal V, Gargano D, Yao Z, Szabadkai G, Odell M, Puno MR, Björkblom B, Maple-Grødem J, Breuer P, Kaut O, Larsen JP, Bonn S, Møller SG, Wüllner U, Schapira AHV, Gegg ME. DJ-1 is a redox sensitive adapter protein for high molecular weight complexes involved in regulation of catecholamine homeostasis. Hum Mol Genet 2018; 26:4028-4041. [PMID: 29016861 PMCID: PMC5886150 DOI: 10.1093/hmg/ddx294] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/19/2017] [Indexed: 01/20/2023] Open
Abstract
DJ-1 is an oxidation sensitive protein encoded by the PARK7 gene. Mutations in PARK7 are a rare cause of familial recessive Parkinson’s disease (PD), but growing evidence suggests involvement of DJ-1 in idiopathic PD. The key clinical features of PD, rigidity and bradykinesia, result from neurotransmitter imbalance, particularly the catecholamines dopamine (DA) and noradrenaline. We report in human brain and human SH-SY5Y neuroblastoma cell lines that DJ-1 predominantly forms high molecular weight (HMW) complexes that included RNA metabolism proteins hnRNPA1 and PABP1 and the glycolysis enzyme GAPDH. In cell culture models the oxidation status of DJ-1 determined the specific complex composition. RNA sequencing indicated that oxidative changes to DJ-1 were concomitant with changes in mRNA transcripts mainly involved in catecholamine metabolism. Importantly, loss of DJ-1 function upon knock down (KD) or expression of the PD associated form L166P resulted in the absence of HMW DJ-1 complexes. In the KD model, the absence of DJ-1 complexes was accompanied by impairment in catecholamine homeostasis, with significant increases in intracellular DA and noraderenaline levels. These changes in catecholamines could be rescued by re-expression of DJ-1. This catecholamine imbalance may contribute to the particular vulnerability of dopaminergic and noradrenergic neurons to neurodegeneration in PARK7-related PD. Notably, oxidised DJ-1 was significantly decreased in idiopathic PD brain, suggesting altered complex function may also play a role in the more common sporadic form of the disease.
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Affiliation(s)
- Dominik Piston
- Department of Clinical Neuroscience, UCL Institute of Neurology, London, UK.,Norwegian Centre for Movement Disorders, Stavanger University Hospital, Stavanger, Norway.,German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | | | - Vikas Bansal
- German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Daniela Gargano
- Centre for Organelle Research, University of Stavanger, Stavanger, Norway
| | - Zhi Yao
- Department of Cell and Developmental Biology, Consortium for Mitochondrial Research, University College London, London, UK
| | - Gyorgy Szabadkai
- Department of Cell and Developmental Biology, Consortium for Mitochondrial Research, University College London, London, UK
| | - Mark Odell
- Department of Molecular and Applied Biosciences, University of Westminster, London, UK
| | - M Rhyan Puno
- Department of Molecular and Applied Biosciences, University of Westminster, London, UK
| | - Benny Björkblom
- Department of Chemistry, Umeå University, SE-90187 Umeå, Sweden
| | - Jodi Maple-Grødem
- Norwegian Centre for Movement Disorders, Stavanger University Hospital, Stavanger, Norway.,Centre for Organelle Research, University of Stavanger, Stavanger, Norway
| | - Peter Breuer
- Department of Neurology, University of Bonn Medical Centre, Bonn, Germany
| | - Oliver Kaut
- Department of Neurology, University of Bonn Medical Centre, Bonn, Germany
| | - Jan Petter Larsen
- Norwegian Centre for Movement Disorders, Stavanger University Hospital, Stavanger, Norway
| | - Stefan Bonn
- German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Simon Geir Møller
- Norwegian Centre for Movement Disorders, Stavanger University Hospital, Stavanger, Norway.,Department of Biological Sciences, St. John's University, New York, NY, USA
| | - Ullrich Wüllner
- German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | | | - Matthew E Gegg
- Department of Clinical Neuroscience, UCL Institute of Neurology, London, UK
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Yamagishi Y, Saigoh K, Saito Y, Ogawa I, Mitsui Y, Hamada Y, Samukawa M, Suzuki H, Kuwahara M, Hirano M, Noguchi N, Kusunoki S. Diagnosis of Parkinson’s disease and the level of oxidized DJ-1 protein. Neurosci Res 2018; 128:58-62. [PMID: 28705587 DOI: 10.1016/j.neures.2017.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 06/26/2017] [Accepted: 06/30/2017] [Indexed: 02/05/2023]
Affiliation(s)
- Yuko Yamagishi
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
| | - Kazumasa Saigoh
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan; Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka 577-8502, Japan.
| | - Yoshiro Saito
- Department of Medical Life Systems, Faculty of Life Sciences, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto 610-0394, Japan
| | - Ikuko Ogawa
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
| | - Yoshiyuki Mitsui
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
| | - Yukihiro Hamada
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
| | - Makoto Samukawa
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
| | - Hidekazu Suzuki
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
| | - Motoi Kuwahara
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
| | - Makito Hirano
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
| | - Noriko Noguchi
- Department of Medical Life Systems, Faculty of Life Sciences, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto 610-0394, Japan
| | - Susumu Kusunoki
- Department of Neurology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
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29
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Antipova D, Bandopadhyay R. Expression of DJ-1 in Neurodegenerative Disorders. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1037:25-43. [DOI: 10.1007/978-981-10-6583-5_3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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30
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Salvadores N, Sanhueza M, Manque P, Court FA. Axonal Degeneration during Aging and Its Functional Role in Neurodegenerative Disorders. Front Neurosci 2017; 11:451. [PMID: 28928628 PMCID: PMC5591337 DOI: 10.3389/fnins.2017.00451] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 07/25/2017] [Indexed: 12/11/2022] Open
Abstract
Aging constitutes the main risk factor for the development of neurodegenerative diseases. This represents a major health issue worldwide that is only expected to escalate due to the ever-increasing life expectancy of the population. Interestingly, axonal degeneration, which occurs at early stages of neurodegenerative disorders (ND) such as Alzheimer's disease, Amyotrophic lateral sclerosis, and Parkinson's disease, also takes place as a consequence of normal aging. Moreover, the alteration of several cellular processes such as proteostasis, response to cellular stress and mitochondrial homeostasis, which have been described to occur in the aging brain, can also contribute to axonal pathology. Compelling evidence indicate that the degeneration of axons precedes clinical symptoms in NDs and occurs before cell body loss, constituting an early event in the pathological process and providing a potential therapeutic target to treat neurodegeneration before neuronal cell death. Although, normal aging and the development of neurodegeneration are two processes that are closely linked, the molecular basis of the switch that triggers the transition from healthy aging to neurodegeneration remains unrevealed. In this review we discuss the potential role of axonal degeneration in this transition and provide a detailed overview of the literature and current advances in the molecular understanding of the cellular changes that occur during aging that promote axonal degeneration and then discuss this in the context of ND.
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Affiliation(s)
- Natalia Salvadores
- Center for Integrative Biology, Faculty of Sciences, Universidad MayorSantiago, Chile.,Fondap Geroscience Center for Brain Health and MetabolismSantiago, Chile
| | - Mario Sanhueza
- Center for Integrative Biology, Faculty of Sciences, Universidad MayorSantiago, Chile.,Fondap Geroscience Center for Brain Health and MetabolismSantiago, Chile
| | - Patricio Manque
- Center for Integrative Biology, Faculty of Sciences, Universidad MayorSantiago, Chile
| | - Felipe A Court
- Center for Integrative Biology, Faculty of Sciences, Universidad MayorSantiago, Chile.,Fondap Geroscience Center for Brain Health and MetabolismSantiago, Chile
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31
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Umeno A, Biju V, Yoshida Y. In vivo ROS production and use of oxidative stress-derived biomarkers to detect the onset of diseases such as Alzheimer's disease, Parkinson's disease, and diabetes. Free Radic Res 2017; 51:413-427. [PMID: 28372523 DOI: 10.1080/10715762.2017.1315114] [Citation(s) in RCA: 171] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Breakthroughs in biochemistry have furthered our understanding of the onset and progression of various diseases, and have advanced the development of new therapeutics. Oxidative stress and reactive oxygen species (ROS) are ubiquitous in biological systems. ROS can be formed non-enzymatically by chemical, photochemical and electron transfer reactions, or as the byproducts of endogenous enzymatic reactions, phagocytosis, and inflammation. Imbalances in ROS homeostasis, caused by impairments in antioxidant enzymes or non-enzymatic antioxidant networks, increase oxidative stress, leading to the deleterious oxidation and chemical modification of biomacromolecules such as lipids, DNA, and proteins. While many ROS are intracellular signaling messengers and most products of oxidative metabolisms are beneficial for normal cellular function, the elevation of ROS levels by light, hyperglycemia, peroxisomes, and certain enzymes causes oxidative stress-sensitive signaling, toxicity, oncogenesis, neurodegenerative diseases, and diabetes. Although the underlying mechanisms of these diseases are manifold, oxidative stress caused by ROS is a major contributing factor in their onset. This review summarizes the relationship between ROS and oxidative stress, with special reference to recent advancements in the detection of biomarkers related to oxidative stress. Further, we will introduce biomarkers for the early detection of neurodegenerative diseases and diabetes, with a focus on our recent work.
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Affiliation(s)
- Aya Umeno
- a Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) , Takamatsu , Kagawa , Japan
| | - Vasudevanpillai Biju
- a Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) , Takamatsu , Kagawa , Japan.,b Laboratory of Molecular Photonics, Research Institute for Electronic Science, Hokkaido University, N20W10 , Kita Ward, Sapporo , Japan
| | - Yasukazu Yoshida
- a Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) , Takamatsu , Kagawa , Japan
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Novel Redox-Dependent Esterase Activity (EC 3.1.1.2) for DJ-1: Implications for Parkinson's Disease. Int J Mol Sci 2016; 17:ijms17081346. [PMID: 27556455 PMCID: PMC5000742 DOI: 10.3390/ijms17081346] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/03/2016] [Accepted: 08/09/2016] [Indexed: 11/17/2022] Open
Abstract
Mutations the in human DJ-1 (hDJ-1) gene are associated with early-onset autosomal recessive forms of Parkinson’s disease (PD). hDJ-1/parkinsonism associated deglycase (PARK7) is a cytoprotective multi-functional protein that contains a conserved cysteine-protease domain. Given that cysteine-proteases can act on both amide and ester substrates, we surmised that hDJ-1 possessed cysteine-mediated esterase activity. To test this hypothesis, hDJ-1 was overexpressed, purified and tested for activity towards 4-nitrophenyl acetate (pNPA) as µmol of pNPA hydrolyzed/min/mg·protein (U/mg protein). hDJ-1 showed maximum reaction velocity esterase activity (Vmax = 235.10 ± 12.00 U/mg protein), with a sigmoidal fit (S0.5 = 0.55 ± 0.040 mM) and apparent positive cooperativity (Hill coefficient of 2.05 ± 0.28). A PD-associated mutant of DJ-1 (M26I) lacked activity. Unlike its protease activity which is inactivated by reactive oxygen species (ROS), esterase activity of hDJ-1 is enhanced upon exposure to low concentrations of hydrogen peroxide (<10 µM) and plateaus at elevated concentrations (>100 µM) suggesting that its activity is resistant to oxidative stress. Esterase activity of DJ-1 requires oxidation of catalytic cysteines, as chemically protecting cysteines blocked its activity whereas an oxido-mimetic mutant of DJ-1 (C106D) exhibited robust esterase activity. Molecular docking studies suggest that C106 and L126 within its catalytic site interact with esterase substrates. Overall, our data show that hDJ-1 contains intrinsic redox-sensitive esterase activity that is abolished in a PD-associated mutant form of the hDJ-1 protein.
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Oxidation and interaction of DJ-1 with 20S proteasome in the erythrocytes of early stage Parkinson's disease patients. Sci Rep 2016; 6:30793. [PMID: 27470541 PMCID: PMC4965792 DOI: 10.1038/srep30793] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 07/11/2016] [Indexed: 02/05/2023] Open
Abstract
Parkinson's disease (PD) is a progressive, age-related, neurodegenerative disorder, and oxidative stress is an important mediator in its pathogenesis. DJ-1, the product of the causative gene of a familial form of PD, plays a significant role in anti-oxidative defence to protect cells from oxidative stress. DJ-1 undergoes preferential oxidation at the cysteine residue at position 106 (Cys-106) under oxidative stress. Here, using specific antibodies against Cys-106-oxidized DJ-1 (oxDJ-1), it was found that the levels of oxDJ-1 in the erythrocytes of unmedicated PD patients (n = 88) were higher than in those of medicated PD patients (n = 62) and healthy control subjects (n = 33). Elevated oxDJ-1 levels were also observed in a non-human primate PD model. Biochemical analysis of oxDJ-1 in erythrocyte lysates showed that oxDJ-1 formed dimer and polymer forms, and that the latter interacts with 20S proteasome. These results clearly indicate a biochemical alteration in the blood of PD patients, which could be utilized as an early diagnosis marker for PD.
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Kang UJ, Goldman JG, Alcalay RN, Xie T, Tuite P, Henchcliffe C, Hogarth P, Amara AW, Frank S, Rudolph A, Casaceli C, Andrews H, Gwinn K, Sutherland M, Kopil C, Vincent L, Frasier M. The BioFIND study: Characteristics of a clinically typical Parkinson's disease biomarker cohort. Mov Disord 2016; 31:924-32. [PMID: 27113479 PMCID: PMC5021110 DOI: 10.1002/mds.26613] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 01/28/2016] [Accepted: 02/16/2016] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Identifying PD-specific biomarkers in biofluids will greatly aid in diagnosis, monitoring progression, and therapeutic interventions. PD biomarkers have been limited by poor discriminatory power, partly driven by heterogeneity of the disease, variability of collection protocols, and focus on de novo, unmedicated patients. Thus, a platform for biomarker discovery and validation in well-characterized, clinically typical, moderate to advanced PD cohorts is critically needed. METHODS BioFIND (Fox Investigation for New Discovery of Biomarkers in Parkinson's Disease) is a cross-sectional, multicenter biomarker study that established a repository of clinical data, blood, DNA, RNA, CSF, saliva, and urine samples from 118 moderate to advanced PD and 88 healthy control subjects. Inclusion criteria were designed to maximize diagnostic specificity by selecting participants with clinically typical PD symptoms, and clinical data and biospecimen collection utilized standardized procedures to minimize variability across sites. RESULTS We present the study methodology and data on the cohort's clinical characteristics. Motor scores and biospecimen samples including plasma are available for practically defined off and on states and thus enable testing the effects of PD medications on biomarkers. Other biospecimens are available from off state PD assessments and from controls. CONCLUSION Our cohort provides a valuable resource for biomarker discovery and validation in PD. Clinical data and biospecimens, available through The Michael J. Fox Foundation for Parkinson's Research and the National Institute of Neurological Disorders and Stroke, can serve as a platform for discovering biomarkers in clinically typical PD and comparisons across PD's broad and heterogeneous spectrum. © 2016 The Authors. Movement Disorders published by Wiley Periodicals, Inc. on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Un Jung Kang
- Division of Movement Disorders, Department of NeurologyColumbia University Medical CenterNew YorkNew YorkUSA
| | - Jennifer G. Goldman
- Section of Parkinson Disease and Movement Disorders, Department of Neurological SciencesRush University Medical CenterChicagoIllinoisUSA
| | - Roy N. Alcalay
- Division of Movement Disorders, Department of NeurologyColumbia University Medical CenterNew YorkNew YorkUSA
| | - Tao Xie
- Parkinson Disease and Movement Disorder Program, Department of NeurologyUniversity of ChicagoChicagoIllinoisUSA
| | - Paul Tuite
- Department of NeurologyUniversity of MinnesotaMinneapolisMinnesotaUSA
| | | | - Penelope Hogarth
- Department of Molecular and Medical GeneticsOregon Health & Science UniversityPortlandOregonUSA
| | - Amy W. Amara
- Department of NeurologyUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Samuel Frank
- Department of NeurologyBeth Israel Deaconess Medical CenterBostonMassachusettsUSA
| | - Alice Rudolph
- Center for Human Experimental Therapeutics, Clinical Trials Coordination CenterUniversity of RochesterRochesterNew YorkUSA
| | - Cynthia Casaceli
- Center for Human Experimental Therapeutics, Clinical Trials Coordination CenterUniversity of RochesterRochesterNew YorkUSA
| | - Howard Andrews
- Division of Movement Disorders, Department of NeurologyColumbia University Medical CenterNew YorkNew YorkUSA
| | - Katrina Gwinn
- National Institute of Neurological Disorders and StrokeNational Institutes of HealthBethesdaMarylandUSA
| | - Margaret Sutherland
- National Institute of Neurological Disorders and StrokeNational Institutes of HealthBethesdaMarylandUSA
| | - Catherine Kopil
- The Michael J. Fox Foundation for Parkinson's ResearchNew YorkNew YorkUSA
| | - Lona Vincent
- The Michael J. Fox Foundation for Parkinson's ResearchNew YorkNew YorkUSA
| | - Mark Frasier
- The Michael J. Fox Foundation for Parkinson's ResearchNew YorkNew YorkUSA
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Blennow K, Biscetti L, Eusebi P, Parnetti L. Cerebrospinal fluid biomarkers in Alzheimer's and Parkinson's diseases-From pathophysiology to clinical practice. Mov Disord 2016; 31:836-47. [DOI: 10.1002/mds.26656] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 03/22/2016] [Accepted: 03/25/2016] [Indexed: 01/05/2023] Open
Affiliation(s)
- Kaj Blennow
- Clinical Neurochemistry Laboratory, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg; Mölndal Campus Mölndal Sweden
| | - Leonardo Biscetti
- Section of Neurology, Department of Medicine, Center for Memory Disturbances, University of Perugia; Sant'Andrea delle Fratte Perugia Italy
| | - Paolo Eusebi
- Section of Neurology, Department of Medicine, Center for Memory Disturbances, University of Perugia; Sant'Andrea delle Fratte Perugia Italy
| | - Lucilla Parnetti
- Section of Neurology, Department of Medicine, Center for Memory Disturbances, University of Perugia; Sant'Andrea delle Fratte Perugia Italy
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Ishiwatari S, Takahashi M, Yasuda C, Nakagawa M, Saito Y, Noguchi N, Matsukuma S. The protective role of DJ-1 in ultraviolet-induced damage of human skin: DJ-1 levels in the stratum corneum as an indicator of antioxidative defense. Arch Dermatol Res 2015; 307:925-35. [PMID: 26498291 DOI: 10.1007/s00403-015-1605-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 09/27/2015] [Accepted: 10/14/2015] [Indexed: 02/05/2023]
Affiliation(s)
| | | | - Chie Yasuda
- Fancl Research Institute, Totsuka, Yokohama, 244-0806, Japan
| | - Maho Nakagawa
- Fancl Research Institute, Totsuka, Yokohama, 244-0806, Japan
| | - Yoshiro Saito
- Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Kyoto, 610-0394, Japan
| | - Noriko Noguchi
- Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Kyoto, 610-0394, Japan
| | - Shoko Matsukuma
- Fancl Research Institute, Totsuka, Yokohama, 244-0806, Japan
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Miura T, Nagamune T, Kawahara M. Ligand-inducible dimeric antibody for selecting antibodies against a membrane protein based on mammalian cell proliferation. Biotechnol Bioeng 2015; 113:1113-23. [DOI: 10.1002/bit.25858] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/23/2015] [Accepted: 10/13/2015] [Indexed: 12/26/2022]
Affiliation(s)
- Tomohiro Miura
- Department of Bioengineering; Graduate School of Engineering, The University of Tokyo; Tokyo Japan
| | - Teruyuki Nagamune
- Department of Bioengineering; Graduate School of Engineering, The University of Tokyo; Tokyo Japan
- Department of Chemistry and Biotechnology; Graduate School of Engineering, The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku; Tokyo 113-8656 Japan
| | - Masahiro Kawahara
- Department of Chemistry and Biotechnology; Graduate School of Engineering, The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku; Tokyo 113-8656 Japan
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38
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Saito Y, Shichiri M, Hamajima T, Ishida N, Mita Y, Nakao S, Hagihara Y, Yoshida Y, Takahashi K, Niki E, Noguchi N. Enhancement of lipid peroxidation and its amelioration by vitamin E in a subject with mutations in the SBP2 gene. J Lipid Res 2015; 56:2172-82. [PMID: 26411970 PMCID: PMC4617404 DOI: 10.1194/jlr.m059105] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Indexed: 02/05/2023] Open
Abstract
Selenocysteine (Sec) insertion sequence-binding protein 2 (SBP2) is essential for the biosynthesis of Sec-containing proteins, termed selenoproteins. Subjects with mutations in the SBP2 gene have decreased levels of several selenoproteins, resulting in a complex phenotype. Selenoproteins play a significant role in antioxidative defense, and deficiencies in these proteins can lead to increased oxidative stress. However, lipid peroxidation and the effects of antioxidants in subjects with SBP2 gene mutations have not been studied. In the present study, we evaluated the lipid peroxidation products in the blood of a subject (the proband) with mutations in the SBP2 gene. We found that the proband had higher levels of free radical-mediated lipid peroxidation products, such as 7β-hydroxycholesterol, than the control subjects. Treatment of the proband with vitamin E (α-tocopherol acetate, 100 mg/day), a lipid-soluble antioxidant, for 2 years reduced lipid peroxidation product levels to those of control subjects. Withdrawal of vitamin E treatment for 7 months resulted in an increase in lipid peroxidation products. Collectively, these results clearly indicate that free radical-mediated oxidative stress is increased in the subject with SBP2 gene mutations and that vitamin E treatment effectively inhibits the generation of lipid peroxidation products.
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Affiliation(s)
- Yoshiro Saito
- Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Kyoto 610-0394, Japan
| | - Mototada Shichiri
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan
| | - Takashi Hamajima
- Department of Pediatric Endocrinology and Metabolism, Aichi Children's Health and Medical Center, Obu, Aichi 474-8710, Japan
| | - Noriko Ishida
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan
| | - Yuichiro Mita
- Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Kyoto 610-0394, Japan
| | - Shohei Nakao
- Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Kyoto 610-0394, Japan
| | - Yoshihisa Hagihara
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan
| | - Yasukazu Yoshida
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan
| | - Kazuhiko Takahashi
- Department of Nutritional Biochemistry, Hokkaido Pharmaceutical University, Otaru, Hokkaido 047-0264, Japan
| | - Etsuo Niki
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan
| | - Noriko Noguchi
- Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Kyoto 610-0394, Japan
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Navarro-Yepes J, Anandhan A, Bradley E, Bohovych I, Yarabe B, de Jong A, Ovaa H, Zhou Y, Khalimonchuk O, Quintanilla-Vega B, Franco R. Inhibition of Protein Ubiquitination by Paraquat and 1-Methyl-4-Phenylpyridinium Impairs Ubiquitin-Dependent Protein Degradation Pathways. Mol Neurobiol 2015; 53:5229-51. [PMID: 26409479 DOI: 10.1007/s12035-015-9414-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Accepted: 09/01/2015] [Indexed: 12/21/2022]
Abstract
Intracytoplasmic inclusions of protein aggregates in dopaminergic cells (Lewy bodies) are the pathological hallmark of Parkinson's disease (PD). Ubiquitin (Ub), alpha (α)-synuclein, p62/sequestosome 1, and oxidized proteins are the major components of Lewy bodies. However, the mechanisms involved in the impairment of misfolded/oxidized protein degradation pathways in PD are still unclear. PD is linked to mitochondrial dysfunction and environmental pesticide exposure. In this work, we evaluated the effects of the pesticide paraquat (PQ) and the mitochondrial toxin 1-methyl-4-phenylpyridinium (MPP(+)) on Ub-dependent protein degradation pathways. No increase in the accumulation of Ub-bound proteins or aggregates was observed in dopaminergic cells (SK-N-SH) treated with PQ or MPP(+), or in mice chronically exposed to PQ. PQ decreased Ub protein content, but not its mRNA transcription. Protein synthesis inhibition with cycloheximide depleted Ub levels and potentiated PQ-induced cell death. The inhibition of proteasomal activity by PQ was found to be a late event in cell death progression and had neither effect on the toxicity of either MPP(+) or PQ, nor on the accumulation of oxidized sulfenylated, sulfonylated (DJ-1/PARK7 and peroxiredoxins), and carbonylated proteins induced by PQ. PQ- and MPP(+)-induced Ub protein depletion prompted the dimerization/inactivation of the Ub-binding protein p62 that regulates the clearance of ubiquitinated proteins by autophagy. We confirmed that PQ and MPP(+) impaired autophagy flux and that the blockage of autophagy by the overexpression of a dominant-negative form of the autophagy protein 5 (dnAtg5) stimulated their toxicity, but there was no additional effect upon inhibition of the proteasome. PQ induced an increase in the accumulation of α-synuclein in dopaminergic cells and membrane-associated foci in yeast cells. Our results demonstrate that the inhibition of protein ubiquitination by PQ and MPP(+) is involved in the dysfunction of Ub-dependent protein degradation pathways.
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Affiliation(s)
- Juliana Navarro-Yepes
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA.,School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, 114 VBS 0905, Lincoln, NE, 68583, USA.,Department of Toxicology, CINVESTAV-IPN, IPN No. 2508, Colonia Zacatenco, Mexico City, D.F., 07360, Mexico
| | - Annadurai Anandhan
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA.,School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, 114 VBS 0905, Lincoln, NE, 68583, USA
| | - Erin Bradley
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Iryna Bohovych
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA.,Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Bo Yarabe
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Annemieke de Jong
- Division of Cell Biology II, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Huib Ovaa
- Division of Cell Biology II, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - You Zhou
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Oleh Khalimonchuk
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA.,Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Betzabet Quintanilla-Vega
- Department of Toxicology, CINVESTAV-IPN, IPN No. 2508, Colonia Zacatenco, Mexico City, D.F., 07360, Mexico.
| | - Rodrigo Franco
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA. .,School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, 114 VBS 0905, Lincoln, NE, 68583, USA.
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40
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Takahashi-Niki K, Kato-Ose I, Murata H, Maita H, Iguchi-Ariga SMM, Ariga H. Epidermal Growth Factor-dependent Activation of the Extracellular Signal-regulated Kinase Pathway by DJ-1 Protein through Its Direct Binding to c-Raf Protein. J Biol Chem 2015; 290:17838-17847. [PMID: 26048984 DOI: 10.1074/jbc.m115.666271] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Indexed: 11/06/2022] Open
Abstract
DJ-1 is an oncogene and also a causative gene for familial Parkinson disease. DJ-1 has various functions, and the oxidative status of cysteine at position 106 (Cys-106) is crucial for determination of the activation level of DJ-1. Although DJ-1 requires activated Ras for its oncogenic activity and although it activates the extracellular signal-regulated kinase (ERK) pathway, a cell growth pathway downstream of Ras, the precise mechanism underlying activation of the ERK pathway by DJ-1 is still not known. In this study, we found that DJ-1 directly bound to the kinase domain of c-Raf but not to Ras and that Cys-106 mutant DJ-1 bound to c-Raf more weakly than did wild-type DJ-1. Co-localization of DJ-1 with c-Raf in the cytoplasm was enhanced in epidermal growth factor (EGF)-treated cells. Knockdown of DJ-1 expression attenuated the phosphorylation level of c-Raf in EGF-treated cells, resulting in reduced activation of MEK and ERK1/2. Although EGF-treated DJ-1 knock-out cells also showed attenuated c-Raf activation, reintroduction of wild-type DJ-1, but not C106S DJ-1, into DJ-1 knock-out cells restored c-Raf activation in a DJ-1 binding activity in a c-Raf-dependent manner. DJ-1 was not responsible for activation of c-Raf in phorbol myristate acetate-treated cells. Furthermore, DJ-1 stimulated self-phosphorylation activity of c-Raf in vitro, but DJ-1 was not a target for Raf kinase. Oxidation of Cys-106 in DJ-1 was not affected by EGF treatment. These findings showed that DJ-1 is a positive regulator of the EGF/Ras/ERK pathway through targeting c-Raf.
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Affiliation(s)
| | - Izumi Kato-Ose
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo 060-0812
| | - Hiroaki Murata
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo 060-0812
| | - Hiroshi Maita
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo 060-0812
| | | | - Hiroyoshi Ariga
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo 060-0812.
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41
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Alquézar C, Barrio E, Esteras N, de la Encarnación A, Bartolomé F, Molina JA, Martín-Requero Á. Targeting cyclin D3/CDK6 activity for treatment of Parkinson's disease. J Neurochem 2015; 133:886-97. [PMID: 25689470 DOI: 10.1111/jnc.13070] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 02/10/2015] [Accepted: 02/10/2015] [Indexed: 01/11/2023]
Abstract
At present, treatment for Parkinson's disease (PD) is only symptomatic; therefore, it is important to identify new targets tackling the molecular causes of the disease. We previously found that lymphoblasts from sporadic PD patients display increased activity of the cyclin D3/CDK6/pRb pathway and higher proliferation than control cells. These features were considered systemic manifestations of the disease, as aberrant activation of the cell cycle is involved in neuronal apoptosis. The main goal of this work was to elucidate whether the inhibition of cyclin D3/CDK6-associated kinase activity could be useful in PD treatment. For this purpose, we investigated the effects of two histone deacetylase (HDAC) inhibitors, suberoylanilide hydroxamic (SAHA) acid and sodium butyrate (NaB), and the m-TOR inhibitor rapamycin on cell viability and cyclin D3/CDK6 activity. Moreover, the potential neuroprotective action of these drugs was evaluated in 6-hydroxy-dopamine (6-OHDA) treated dopaminergic SH-SY5Y cells and primary rat mesencephalic cultures. Here, we report that both compounds normalized the proliferative activity of PD lymphoblasts and reduced the 6-OHDA-induced cell death in neuronal cells by preventing the over-activation of the cyclin D3/CDK6/pRb cascade. Considering that these drugs are already used in clinic for treatment of other diseases with good tolerance, it is plausible that they may serve as novel therapeutic drugs for PD. We report here that peripheral cells from Parkinson's disease (PD) patients show an enhanced proliferative activity due to the activation of cyclin D3/CDK6-mediated phosphorylation of retinoblastoma protein (pRb). Treatment of PD lymphoblasts with inhibitors of histone deacetylases like suberoylanilide hydroxamic acid (SAHA) and sodium butyrate (NaB), or with rapamycin, inhibitor of mechanistic target of rapamycin (mTOR) normalized the proliferation of PD lymphoblasts by preventing the over-activation of the cyclin D3/CDK6/pRb cascade. These drugs were shown to have neuroprotective effects in both human neuroblastoma SH-SY5Y cells and primary rat mid-brain dopaminergic neuronal cultures toxicity induced by 6-hidroxydopamine. Considering that these drugs are already used in clinic for treatment of other diseases with good tolerance, it seems reasonable to believe that the repositioning of these drugs toward PD holds promise as a novel therapeutic strategy.
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Affiliation(s)
- Carolina Alquézar
- Department of Cellular and Molecular Medicine, Centro de Investigaciones Biológicas (CSIC), Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Estíbaliz Barrio
- Department of Cellular and Molecular Medicine, Centro de Investigaciones Biológicas (CSIC), Madrid, Spain
| | - Noemí Esteras
- Department of Cellular and Molecular Medicine, Centro de Investigaciones Biológicas (CSIC), Madrid, Spain
| | - Ana de la Encarnación
- Department of Cellular and Molecular Medicine, Centro de Investigaciones Biológicas (CSIC), Madrid, Spain
| | - Fernando Bartolomé
- Neuroscience Laboratory, Research Institute, Hospital Doce de Octubre, Madrid, Spain
| | - José A Molina
- Department of Neurology, Hospital Doce de Octubre, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Ángeles Martín-Requero
- Department of Cellular and Molecular Medicine, Centro de Investigaciones Biológicas (CSIC), Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
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42
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Abstract
DJ-1, the product of a causative gene of a familial form of Parkinson disease, undergoes preferential oxidation of Cys106 (cysteine residue at position 106) under oxidative stress. Using specific monoclonal antibodies against Cys106 oxidized DJ-1 (oxDJ-1), we examined oxDJ-1 immunoreactivity in brain sections from DJ-1 knockout and wild-type mice and in human brain sections from cases classified into different Lewy body stages of Parkinson disease and Parkinson disease with dementia. Oxidized DJ-1 immunoreactivity was prominently observed in neuromelanin-containing neurons and neuron processes of the substantia nigra; Lewy bodies also showed oxDJ-1 immunoreactivity. Oxidized DJ-1 was also detected in astrocytes in the striatum, in neurons and glia in the red nucleus, and in the inferior olivary nucleus, all of which are related to regulation of movement. These observations suggest the relevance of DJ-1 oxidation to homeostasis in multiple brain regions, including neuromelanin-containing neurons of the substantia nigra, and raise the possibility that oxDJ-1 levels might change during the progression of Lewy body-associated neurodegenerative diseases.
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43
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Rudyk O, Eaton P. Biochemical methods for monitoring protein thiol redox states in biological systems. Redox Biol 2014; 2:803-13. [PMID: 25009782 PMCID: PMC4085346 DOI: 10.1016/j.redox.2014.06.005] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 06/05/2014] [Accepted: 06/09/2014] [Indexed: 01/11/2023] Open
Abstract
Oxidative post-translational modifications of proteins resulting from events that increase cellular oxidant levels play important roles in physiological and pathophysiological processes. Evaluation of alterations to protein redox states is increasingly common place because of methodological advances that have enabled detection, quantification and identification of such changes in cells and tissues. This mini-review provides a synopsis of biochemical methods that can be utilized to monitor the array of different oxidative and electrophilic modifications that can occur to protein thiols and can be important in the regulatory or maladaptive impact oxidants can have on biological systems. Several of the methods discussed are valuable for monitoring the redox state of established redox sensing proteins such as Keap1.
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Affiliation(s)
- Olena Rudyk
- King's College London, Cardiovascular Division, The British Heart Foundation Centre of Excellence, The Rayne Institute, St Thomas' Hospital, London SE1 7EH, UK
| | - Philip Eaton
- King's College London, Cardiovascular Division, The British Heart Foundation Centre of Excellence, The Rayne Institute, St Thomas' Hospital, London SE1 7EH, UK
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44
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Shichiri M. The role of lipid peroxidation in neurological disorders. J Clin Biochem Nutr 2014; 54:151-60. [PMID: 24895477 PMCID: PMC4042144 DOI: 10.3164/jcbn.14-10] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 01/30/2014] [Indexed: 12/21/2022] Open
Abstract
There has been much evidence demonstrating the involvement of oxidative stress in the pathology of neurological disorders. Moreover, the vulnerability of the central nervous system to reactive oxygen species mediated injury is well established since neurons consume large amounts of oxygen, the brain has many areas containing high iron content, and neuronal mitochondria generate large amounts of hydrogen peroxide. Furthermore, neuronal membranes are rich in polyunsaturated fatty acids, which are particularly susceptible to oxidative stress. Recently, the biological roles of products produced by lipid peroxidation have received much attention, not only for their pathological mechanisms associated with neurological disorders, but also for their practical clinical applications as biomarkers. Here, we discuss the production mechanisms of reactive oxygen species in some neurological disorders, including Alzheimer's disease, Down syndrome, Parkinson's disease, and stroke. We also describe lipid peroxidation biomarkers for evaluating oxidative stress.
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Affiliation(s)
- Mototada Shichiri
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
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45
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Saito Y. Oxidized DJ-1 as a possible biomarker of Parkinson's disease. J Clin Biochem Nutr 2014; 54:138-44. [PMID: 24894116 PMCID: PMC4042152 DOI: 10.3164/jcbn.13-108] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 01/30/2014] [Indexed: 02/05/2023] Open
Abstract
Parkinson's disease is a progressive, age-related, neurodegenerative disorder, and oxidative stress is an important mediator in its pathogenesis. DJ-1 is a causative gene of a familial form of Parkinson's disease, namely PARK7, and plays a significant role in antioxidative defense to protect the cells from oxidative stress. DJ-1 undergoes preferential oxidation at the cysteine residue at position 106, Cys-106, under oxidative stress. The critical role of Cys-106 in the biological function of DJ-1 has been demonstrated, and recent studies indicate that DJ-1 acts as a sensor of oxidative stress by regulating the gene expression of antioxidative defense. Specific antibodies against Cys-106-oxidized DJ-1 have been developed, and the generation of oxidized DJ-1 in cellular and animal models of Parkinson's disease has been investigated. This review focuses on the role of DJ-1 in antioxidative defense and the importance of oxidizable Cys-106 in its function. The significance of the identification of early-phase Parkinson's disease biomarkers and the nature of oxidized DJ-1 as a biomarker for Parkinson's disease are discussed here.
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Affiliation(s)
- Yoshiro Saito
- Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Medical and Life Sciences, Doshisha University, Kyotanabe, Kyoto 610-0394, Japan
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46
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Niki E. Biomarkers of lipid peroxidation in clinical material. Biochim Biophys Acta Gen Subj 2014; 1840:809-17. [DOI: 10.1016/j.bbagen.2013.03.020] [Citation(s) in RCA: 374] [Impact Index Per Article: 37.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 03/14/2013] [Accepted: 03/17/2013] [Indexed: 11/28/2022]
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47
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Frasier M, Kang UJ. Parkinson's disease biomarkers: resources for discovery and validation. Neuropsychopharmacology 2014; 39:241-2. [PMID: 24317317 PMCID: PMC3857671 DOI: 10.1038/npp.2013.246] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mark Frasier
- The Michael J Fox Foundation for Parkinson's Research, New York, NY, USA,E-mail:
| | - Un Jung Kang
- Movement Disorders Division, The Neurological Institutes of New York, Columbia University College of Physicians and Surgeons, New York, NY, USA
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48
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Sanders LH, Timothy Greenamyre J. Oxidative damage to macromolecules in human Parkinson disease and the rotenone model. Free Radic Biol Med 2013; 62:111-120. [PMID: 23328732 PMCID: PMC3677955 DOI: 10.1016/j.freeradbiomed.2013.01.003] [Citation(s) in RCA: 416] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Revised: 01/08/2013] [Accepted: 01/08/2013] [Indexed: 11/25/2022]
Abstract
Parkinson disease (PD), the most common neurodegenerative movement disorder, is associated with selective degeneration of nigrostriatal dopamine neurons. Although the underlying mechanisms contributing to neurodegeneration in PD seem to be multifactorial, mitochondrial impairment and oxidative stress are widely considered to be central to many forms of the disease. Whether oxidative stress is a cause or a consequence of dopaminergic death, there is substantial evidence for oxidative stress both in human PD patients and in animal models of PD, especially using rotenone, a complex I inhibitor. There are many indices of oxidative stress, but this review covers the recent evidence for oxidative damage to nucleic acids, lipids, and proteins in both the brain and the peripheral tissues in human PD and in the rotenone model. Limitations of the existing literature and future perspectives are discussed. Understanding how each particular macromolecule is damaged by oxidative stress and the interplay of secondary damage to other biomolecules may help us design better targets for the treatment of PD.
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Affiliation(s)
- Laurie H Sanders
- Pittsburgh Institute for Neurodegenerative Diseases, Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - J Timothy Greenamyre
- Pittsburgh Institute for Neurodegenerative Diseases, Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15260, USA.
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49
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Shadrach KG, Rayborn ME, Hollyfield JG, Bonilha VL. DJ-1-dependent regulation of oxidative stress in the retinal pigment epithelium (RPE). PLoS One 2013; 8:e67983. [PMID: 23844142 PMCID: PMC3699467 DOI: 10.1371/journal.pone.0067983] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 05/23/2013] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND DJ-1 is found in many tissues, including the brain, where it has been extensively studied due to its association with Parkinson's disease. DJ-1 functions as a redox-sensitive molecular chaperone and transcription regulator that robustly protects cells from oxidative stress. METHODOLOGY Retinal pigment epithelial (RPE) cultures were treated with H2O2 for various times followed by biochemical and immunohistological analysis. Cells were transfected with adenoviruses carrying the full-length human DJ-1 cDNA and a mutant construct, which has the cysteine residues at amino acid 46, 53 and 106 mutated to serine (C to S) prior to stress experiments. DJ-1 localization, levels of expression and reactive oxygen species (ROS) generation were also analyzed in cells expressing exogenous DJ-1 under baseline and oxidative stress conditions. The presence of DJ-1 and oxidized DJ-1 was evaluated in human RPE total lysates. The distribution of DJ-1 was assessed in AMD and non-AMD cryosectionss and in isolated human Bruch's membrane (BM)/choroid from AMD eyes. PRINCIPAL FINDINGS DJ-1 in RPE cells under baseline conditions, displays a diffuse cytoplasmic and nuclear staining. After oxidative challenge, more DJ-1 was associated with mitochondria. Increasing concentrations of H2O2 resulted in a dose-dependent increase in DJ-1. Overexpression of DJ-1 but not the C to S mutant prior to exposure to oxidative stress led to significant decrease in the generation of ROS. DJ-1 and oxDJ-1 intensity of immunoreactivity was significantly higher in the RPE lysates from AMD eyes. More DJ-1 was localized to RPE cells from AMD donors with geographic atrophy and DJ-1 was also present in isolated human BM/choroid from AMD eyes. CONCLUSIONS/SIGNIFICANCE DJ-1 regulates RPE responses to oxidative stress. Most importantly, increased DJ-1 expression prior to oxidative stress leads to decreased generation of ROS, which will be relevant for future studies of AMD since oxidative stress is a known factor affecting this disease.
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Affiliation(s)
- Karen G. Shadrach
- Department of Ophthalmic Research, The Cole Eye Institute, Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio, United States of America
| | - Mary E. Rayborn
- Department of Ophthalmic Research, The Cole Eye Institute, Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio, United States of America
| | - Joe G. Hollyfield
- Department of Ophthalmic Research, The Cole Eye Institute, Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio, United States of America
| | - Vera L. Bonilha
- Department of Ophthalmic Research, The Cole Eye Institute, Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio, United States of America
- * E-mail:
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50
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Dias V, Junn E, Mouradian MM. The role of oxidative stress in Parkinson's disease. JOURNAL OF PARKINSON'S DISEASE 2013; 3:461-91. [PMID: 24252804 PMCID: PMC4135313 DOI: 10.3233/jpd-130230] [Citation(s) in RCA: 1055] [Impact Index Per Article: 95.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Oxidative stress plays an important role in the degeneration of dopaminergic neurons in Parkinson's disease (PD). Disruptions in the physiologic maintenance of the redox potential in neurons interfere with several biological processes, ultimately leading to cell death. Evidence has been developed for oxidative and nitrative damage to key cellular components in the PD substantia nigra. A number of sources and mechanisms for the generation of reactive oxygen species (ROS) are recognized including the metabolism of dopamine itself, mitochondrial dysfunction, iron, neuroinflammatory cells, calcium, and aging. PD causing gene products including DJ-1, PINK1, parkin, alpha-synuclein and LRRK2 also impact in complex ways mitochondrial function leading to exacerbation of ROS generation and susceptibility to oxidative stress. Additionally, cellular homeostatic processes including the ubiquitin-proteasome system and mitophagy are impacted by oxidative stress. It is apparent that the interplay between these various mechanisms contributes to neurodegeneration in PD as a feed forward scenario where primary insults lead to oxidative stress, which damages key cellular pathogenetic proteins that in turn cause more ROS production. Animal models of PD have yielded some insights into the molecular pathways of neuronal degeneration and highlighted previously unknown mechanisms by which oxidative stress contributes to PD. However, therapeutic attempts to target the general state of oxidative stress in clinical trials have failed to demonstrate an impact on disease progression. Recent knowledge gained about the specific mechanisms related to PD gene products that modulate ROS production and the response of neurons to stress may provide targeted new approaches towards neuroprotection.
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Affiliation(s)
- Vera Dias
- Center for Neurodegenerative and Neuroimmunologic Diseases, Department of Neurology, Rutgers - Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Eunsung Junn
- Center for Neurodegenerative and Neuroimmunologic Diseases, Department of Neurology, Rutgers - Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - M. Maral Mouradian
- Center for Neurodegenerative and Neuroimmunologic Diseases, Department of Neurology, Rutgers - Robert Wood Johnson Medical School, Piscataway, NJ, USA
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