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Wang XX, Chen WZ, Li C, Xu RS. Current potential pathogenic mechanisms of copper-zinc superoxide dismutase 1 (SOD1) in amyotrophic lateral sclerosis. Rev Neurosci 2024; 35:549-563. [PMID: 38381656 DOI: 10.1515/revneuro-2024-0010] [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: 11/05/2023] [Accepted: 01/27/2024] [Indexed: 02/23/2024]
Abstract
Amyotrophic lateral sclerosis (ALS) is a rare neurodegenerative disease which damages upper and lower motor neurons (UMN and LMN) innervating the muscles of the trunk, extremities, head, neck and face in cerebrum, brain stem and spinal cord, which results in the progressive weakness, atrophy and fasciculation of muscle innervated by the related UMN and LMN, accompanying with the pathological signs leaded by the cortical spinal lateral tract lesion. The pathogenesis about ALS is not fully understood, and no specific drugs are available to cure and prevent the progression of this disease at present. In this review, we reviewed the structure and associated functions of copper-zinc superoxide dismutase 1 (SOD1), discuss why SOD1 is crucial to the pathogenesis of ALS, and outline the pathogenic mechanisms of SOD1 in ALS that have been identified at recent years, including glutamate-related excitotoxicity, mitochondrial dysfunction, endoplasmic reticulum stress, oxidative stress, axonal transport disruption, prion-like propagation, and the non-cytologic toxicity of glial cells. This review will help us to deeply understand the current progression in this field of SOD1 pathogenic mechanisms in ALS.
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Affiliation(s)
- Xin-Xin Wang
- Department of Neurology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, The Clinical College of Nanchang Medical College, National Regional Center for Neurological Diseases, Xiangya Hospital of Central South University, Jiangxi Hospital, Nanchang 330006, Jiangxi Province, China
- Medical College of Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Wen-Zhi Chen
- Department of Neurology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, The Clinical College of Nanchang Medical College, National Regional Center for Neurological Diseases, Xiangya Hospital of Central South University, Jiangxi Hospital, Nanchang 330006, Jiangxi Province, China
| | - Cheng Li
- Department of Neurology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, The Clinical College of Nanchang Medical College, National Regional Center for Neurological Diseases, Xiangya Hospital of Central South University, Jiangxi Hospital, Nanchang 330006, Jiangxi Province, China
| | - Ren-Shi Xu
- Department of Neurology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, The Clinical College of Nanchang Medical College, National Regional Center for Neurological Diseases, Xiangya Hospital of Central South University, Jiangxi Hospital, Nanchang 330006, Jiangxi Province, China
- Medical College of Nanchang University, Nanchang 330006, Jiangxi Province, China
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2
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Pittalà MGG, Reina S, Cucina A, Cunsolo V, Guarino F, Di Francesco A, Foti S, De Pinto V, Saletti R. Intramolecular Disulfide Bridges in Voltage-Dependent Anion Channel 2 (VDAC2) Protein from Rattus norvegicus Revealed by High-Resolution Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1422-1433. [PMID: 38832804 DOI: 10.1021/jasms.4c00033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Voltage-Dependent Anion Channel isoforms (VDAC1, VDAC2, and VDAC3) are relevant components of the outer mitochondrial membrane (OMM) and play a crucial role in regulation of metabolism and in survival pathways. As major players in the regulation of cellular metabolism and apoptosis, VDACs can be considered at the crossroads between two broad families of pathologies, namely, cancer and neurodegeneration, the former being associated with elevated glycolytic rate and suppression of apoptosis in cancer cells, the latter characterized by mitochondrial dysfunction and increased cell death. Recently, we reported the characterization of the oxidation pattern of methionine and cysteines in rat and human VDACs showing that each cysteine in these proteins is present with a preferred oxidation state, ranging from the reduced to the trioxidized form, and such an oxidation state is remarkably conserved between rat and human VDACs. However, the presence and localization of disulfide bonds in VDACs, a key point for their structural characterization, have so far remained undetermined. Herein we have investigated by nanoUHPLC/High-Resolution nanoESI-MS/MS the position of intramolecular disulfide bonds in rat VDAC2 (rVDAC2), a protein that contains 11 cysteines. To this purpose, extraction, purification, and enzymatic digestions were carried out at slightly acidic or neutral pH in order to minimize disulfide bond interchange. The presence of six disulfide bridges was unequivocally determined, including a disulfide bridge linking the two adjacent cysteines 4 and 5, a disulfide bridge linking cysteines 9 and 14, and the alternative disulfide bridges between cysteines 48, 77, and 104. A disulfide bond, which is very resistant to reduction, between cysteines 134 and 139 was also detected. In addition to the previous findings, these results significantly extend the characterization of the oxidation state of cysteines in rVDAC2 and show that it is highly complex and presents unusual features. Data are available via ProteomeXchange with the identifier PXD044041.
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Affiliation(s)
- Maria Gaetana Giovanna Pittalà
- Department of Chemical Sciences, Organic Mass Spectrometry Laboratory, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Simona Reina
- Department of Biomedical Sciences and Biotechnology, Section of Biology and Genetics, University of Catania, via S. Sofia, 97, 95123 Catania, Italy
| | - Annamaria Cucina
- Department of Chemical Sciences, Organic Mass Spectrometry Laboratory, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Vincenzo Cunsolo
- Department of Chemical Sciences, Organic Mass Spectrometry Laboratory, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Francesca Guarino
- Department of Biomedical Sciences and Biotechnology, Section of Biology and Genetics, University of Catania, via S. Sofia, 97, 95123 Catania, Italy
| | - Antonella Di Francesco
- Department of Chemical Sciences, Organic Mass Spectrometry Laboratory, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Salvatore Foti
- Department of Chemical Sciences, Organic Mass Spectrometry Laboratory, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Vito De Pinto
- Department of Biomedical Sciences and Biotechnology, Section of Biology and Genetics, University of Catania, via S. Sofia, 97, 95123 Catania, Italy
| | - Rosaria Saletti
- Department of Chemical Sciences, Organic Mass Spectrometry Laboratory, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
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3
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Garcia-Montojo M, Fathi S, Rastegar C, Simula ER, Doucet-O'Hare T, Cheng YHH, Abrams RPM, Pasternack N, Malik N, Bachani M, Disanza B, Maric D, Lee MH, Wang H, Santamaria U, Li W, Sampson K, Lorenzo JR, Sanchez IE, Mezghrani A, Li Y, Sechi LA, Pineda S, Heiman M, Kellis M, Steiner J, Nath A. TDP-43 proteinopathy in ALS is triggered by loss of ASRGL1 and associated with HML-2 expression. Nat Commun 2024; 15:4163. [PMID: 38755145 PMCID: PMC11099023 DOI: 10.1038/s41467-024-48488-7] [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: 02/04/2023] [Accepted: 05/02/2024] [Indexed: 05/18/2024] Open
Abstract
TAR DNA-binding protein 43 (TDP-43) proteinopathy in brain cells is the hallmark of amyotrophic lateral sclerosis (ALS) but its cause remains elusive. Asparaginase-like-1 protein (ASRGL1) cleaves isoaspartates, which alter protein folding and susceptibility to proteolysis. ASRGL1 gene harbors a copy of the human endogenous retrovirus HML-2, whose overexpression contributes to ALS pathogenesis. Here we show that ASRGL1 expression was diminished in ALS brain samples by RNA sequencing, immunohistochemistry, and western blotting. TDP-43 and ASRGL1 colocalized in neurons but, in the absence of ASRGL1, TDP-43 aggregated in the cytoplasm. TDP-43 was found to be prone to isoaspartate formation and a substrate for ASRGL1. ASRGL1 silencing triggered accumulation of misfolded, fragmented, phosphorylated and mislocalized TDP-43 in cultured neurons and motor cortex of female mice. Overexpression of ASRGL1 restored neuronal viability. Overexpression of HML-2 led to ASRGL1 silencing. Loss of ASRGL1 leading to TDP-43 aggregation may be a critical mechanism in ALS pathophysiology.
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Affiliation(s)
- Marta Garcia-Montojo
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Saeed Fathi
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Cyrus Rastegar
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Elena Rita Simula
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
- Struttura Complessa Microbiologia e Virologia, Azienda Ospedaliera Universitaria Sassari, Sassari, Italy
| | - Tara Doucet-O'Hare
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Y H Hank Cheng
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Rachel P M Abrams
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Nicholas Pasternack
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Nasir Malik
- Translational Neuroscience Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Muzna Bachani
- Translational Neuroscience Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Brianna Disanza
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Dragan Maric
- Flow and Imaging Cytometry Core Facility, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Myoung-Hwa Lee
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Herui Wang
- Neuro-Oncology Branch, National Cancer Institute (NIH), Bethesda, MD, USA
| | - Ulisses Santamaria
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Wenxue Li
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Kevon Sampson
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Juan Ramiro Lorenzo
- Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET-CICPBA-UNCPBA, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro (FCV-UNCPBA), Tandil, Argentina
| | - Ignacio E Sanchez
- Protein Physiology Laboratory, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales and IQUIBICEN-CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Alexandre Mezghrani
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
- Centre de Biologie Structurale, Centre national de la recherche scientifique (CNRS), Montpellier, France
| | - Yan Li
- Protein/Peptide Sequencing Facility, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Leonardo Antonio Sechi
- Struttura Complessa Microbiologia e Virologia, Azienda Ospedaliera Universitaria Sassari, Sassari, Italy
| | | | - Myriam Heiman
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Manolis Kellis
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Joseph Steiner
- Translational Neuroscience Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA
| | - Avindra Nath
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NIH), Bethesda, MD, USA.
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4
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Magrì A, Lipari CLR, Caccamo A, Battiato G, Conti Nibali S, De Pinto V, Guarino F, Messina A. AAV-mediated upregulation of VDAC1 rescues the mitochondrial respiration and sirtuins expression in a SOD1 mouse model of inherited ALS. Cell Death Discov 2024; 10:178. [PMID: 38627359 PMCID: PMC11021507 DOI: 10.1038/s41420-024-01949-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/29/2024] [Accepted: 04/08/2024] [Indexed: 04/19/2024] Open
Abstract
Mitochondrial dysfunction represents one of the most common molecular hallmarks of both sporadic and familial forms of amyotrophic lateral sclerosis (ALS), a neurodegenerative disorder caused by the selective degeneration and death of motor neurons. The accumulation of misfolded proteins on and within mitochondria, as observed for SOD1 G93A mutant, correlates with a drastic reduction of mitochondrial respiration and the inhibition of metabolites exchanges, including ADP/ATP and NAD+/NADH, across the Voltage-Dependent Anion-selective Channel 1 (VDAC1), the most abundant channel protein of the outer mitochondrial membrane. Here, we show that the AAV-mediated upregulation of VDAC1 in the spinal cord of transgenic mice expressing SOD1 G93A completely rescues the mitochondrial respiratory profile. This correlates with the increased activity and levels of key regulators of mitochondrial functions and maintenance, namely the respiratory chain Complex I and the sirtuins (Sirt), especially Sirt3. Furthermore, the selective increase of these mitochondrial proteins is associated with an increase in Tom20 levels, the receptor subunit of the TOM complex. Overall, our results indicate that the overexpression of VDAC1 has beneficial effects on ALS-affected tissue by stabilizing the Complex I-Sirt3 axis.
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Affiliation(s)
- Andrea Magrì
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via S. Sofia 97, 95123, Catania, Italy
- we.MitoBiotech s.r.l., C.so Italia 172, 95125, Catania, Italy
| | - Cristiana Lucia Rita Lipari
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123, Catania, Italy
| | - Antonella Caccamo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, V.le F. Stagno d'Alcontres 32, 98166, Messina, Italy
| | - Giuseppe Battiato
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123, Catania, Italy
| | - Stefano Conti Nibali
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123, Catania, Italy
| | - Vito De Pinto
- we.MitoBiotech s.r.l., C.so Italia 172, 95125, Catania, Italy
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123, Catania, Italy
| | - Francesca Guarino
- we.MitoBiotech s.r.l., C.so Italia 172, 95125, Catania, Italy
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123, Catania, Italy
| | - Angela Messina
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via S. Sofia 97, 95123, Catania, Italy.
- we.MitoBiotech s.r.l., C.so Italia 172, 95125, Catania, Italy.
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5
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Kadam A, Jadiya P, Tomar D. Post-translational modifications and protein quality control of mitochondrial channels and transporters. Front Cell Dev Biol 2023; 11:1196466. [PMID: 37601094 PMCID: PMC10434574 DOI: 10.3389/fcell.2023.1196466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 07/24/2023] [Indexed: 08/22/2023] Open
Abstract
Mitochondria play a critical role in energy metabolism and signal transduction, which is tightly regulated by proteins, metabolites, and ion fluxes. Metabolites and ion homeostasis are mainly mediated by channels and transporters present on mitochondrial membranes. Mitochondria comprise two distinct compartments, the outer mitochondrial membrane (OMM) and the inner mitochondrial membrane (IMM), which have differing permeabilities to ions and metabolites. The OMM is semipermeable due to the presence of non-selective molecular pores, while the IMM is highly selective and impermeable due to the presence of specialized channels and transporters which regulate ion and metabolite fluxes. These channels and transporters are modulated by various post-translational modifications (PTMs), including phosphorylation, oxidative modifications, ions, and metabolites binding, glycosylation, acetylation, and others. Additionally, the mitochondrial protein quality control (MPQC) system plays a crucial role in ensuring efficient molecular flux through the mitochondrial membranes by selectively removing mistargeted or defective proteins. Inefficient functioning of the transporters and channels in mitochondria can disrupt cellular homeostasis, leading to the onset of various pathological conditions. In this review, we provide a comprehensive overview of the current understanding of mitochondrial channels and transporters in terms of their functions, PTMs, and quality control mechanisms.
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Affiliation(s)
- Ashlesha Kadam
- Department of Internal Medicine, Section of Cardiovascular Medicine, Section of Molecular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Pooja Jadiya
- Department of Internal Medicine, Section of Gerontology and Geriatric Medicine, Section of Molecular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Dhanendra Tomar
- Department of Internal Medicine, Section of Cardiovascular Medicine, Section of Molecular Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States
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6
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Park JW, Tyl MD, Cristea IM. Orchestration of Mitochondrial Function and Remodeling by Post-Translational Modifications Provide Insight into Mechanisms of Viral Infection. Biomolecules 2023; 13:biom13050869. [PMID: 37238738 DOI: 10.3390/biom13050869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
The regulation of mitochondria structure and function is at the core of numerous viral infections. Acting in support of the host or of virus replication, mitochondria regulation facilitates control of energy metabolism, apoptosis, and immune signaling. Accumulating studies have pointed to post-translational modification (PTM) of mitochondrial proteins as a critical component of such regulatory mechanisms. Mitochondrial PTMs have been implicated in the pathology of several diseases and emerging evidence is starting to highlight essential roles in the context of viral infections. Here, we provide an overview of the growing arsenal of PTMs decorating mitochondrial proteins and their possible contribution to the infection-induced modulation of bioenergetics, apoptosis, and immune responses. We further consider links between PTM changes and mitochondrial structure remodeling, as well as the enzymatic and non-enzymatic mechanisms underlying mitochondrial PTM regulation. Finally, we highlight some of the methods, including mass spectrometry-based analyses, available for the identification, prioritization, and mechanistic interrogation of PTMs.
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Affiliation(s)
- Ji Woo Park
- Lewis Thomas Laboratory, Department of Molecular Biology, Princeton University, Washington Road, Princeton, NJ 08544, USA
| | - Matthew D Tyl
- Lewis Thomas Laboratory, Department of Molecular Biology, Princeton University, Washington Road, Princeton, NJ 08544, USA
| | - Ileana M Cristea
- Lewis Thomas Laboratory, Department of Molecular Biology, Princeton University, Washington Road, Princeton, NJ 08544, USA
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7
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Pittalà MGG, Reina S, Nibali SC, Cucina A, Cubisino SAM, Cunsolo V, Amodeo GF, Foti S, De Pinto V, Saletti R, Messina A. Specific Post-Translational Modifications of VDAC3 in ALS-SOD1 Model Cells Identified by High-Resolution Mass Spectrometry. Int J Mol Sci 2022; 23:ijms232415853. [PMID: 36555496 PMCID: PMC9784795 DOI: 10.3390/ijms232415853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/25/2022] [Accepted: 12/06/2022] [Indexed: 12/15/2022] Open
Abstract
Damage induced by oxidative stress is a key driver of the selective motor neuron death in amyotrophic lateral sclerosis (ALS). Mitochondria are among the main producers of ROS, but they also suffer particularly from their harmful effects. Voltage-dependent anion-selective channels (VDACs) are the most represented proteins of the outer mitochondrial membrane where they form pores controlling the permeation of metabolites responsible for mitochondrial functions. For these reasons, VDACs contribute to mitochondrial quality control and the entire energy metabolism of the cell. In this work we assessed in an ALS cell model whether disease-related oxidative stress induces post-translational modifications (PTMs) in VDAC3, a member of the VDAC family of outer mitochondrial membrane channel proteins, known for its role in redox signaling. At this end, protein samples enriched in VDACs were prepared from mitochondria of an ALS model cell line, NSC34 expressing human SOD1G93A, and analyzed by nUHPLC/High-Resolution nESI-MS/MS. Specific over-oxidation, deamidation, succination events were found in VDAC3 from ALS-related NSC34-SOD1G93A but not in non-ALS cell lines. Additionally, we report evidence that some PTMs may affect VDAC3 functionality. In particular, deamidation of Asn215 alone alters single channel behavior in artificial membranes. Overall, our results suggest modifications of VDAC3 that can impact its protective role against ROS, which is particularly important in the ALS context. Data are available via ProteomeXchange with identifier PXD036728.
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Affiliation(s)
- Maria Gaetana Giovanna Pittalà
- Organic Mass Spectrometry Laboratory, Department of Chemical Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Simona Reina
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Stefano Conti Nibali
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Annamaria Cucina
- Organic Mass Spectrometry Laboratory, Department of Chemical Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | | | - Vincenzo Cunsolo
- Organic Mass Spectrometry Laboratory, Department of Chemical Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | | | - Salvatore Foti
- Organic Mass Spectrometry Laboratory, Department of Chemical Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Vito De Pinto
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Rosaria Saletti
- Organic Mass Spectrometry Laboratory, Department of Chemical Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
- Correspondence: ; Tel.: +39-095-738-5026
| | - Angela Messina
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
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8
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Shteinfer-Kuzmine A, Argueti-Ostrovsky S, Leyton-Jaimes MF, Anand U, Abu-Hamad S, Zalk R, Shoshan-Barmatz V, Israelson A. Targeting the Mitochondrial Protein VDAC1 as a Potential Therapeutic Strategy in ALS. Int J Mol Sci 2022; 23:ijms23179946. [PMID: 36077343 PMCID: PMC9456491 DOI: 10.3390/ijms23179946] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 01/02/2023] Open
Abstract
Impaired mitochondrial function has been proposed as a causative factor in neurodegenerative diseases, including amyotrophic lateral sclerosis (ALS), caused by motor neuron degeneration. Mutations in superoxide dismutase (SOD1) cause ALS and SOD1 mutants were shown to interact with the voltage-dependent anion channel 1 (VDAC1), affecting its normal function. VDAC1 is a multi-functional channel located at the outer mitochondrial membrane that serves as a mitochondrial gatekeeper controlling metabolic and energetic crosstalk between mitochondria and the rest of the cell and it is a key player in mitochondria-mediated apoptosis. Previously, we showed that VDAC1 interacts with SOD1 and that the VDAC1-N-terminal-derived peptide prevented mutant SOD1 cytotoxic effects. In this study, using a peptide array, we identified the SOD1 sequence that interacts with VDAC1. Synthetic peptides generated from the identified VDAC1-binding sequences in SOD1 directly interacted with purified VDAC1. We also show that VDAC1 oligomerization increased in spinal cord mitochondria isolated from mutant SOD1G93A mice and rats. Thus, we used the novel VDAC1-specific small molecules, VBIT-4 and VBIT-12, inhibiting VDAC1 oligomerization and subsequently apoptosis and associated processes such as ROS production, and increased cytosolic Ca2+. VBIT-12 was able to rescue cell death induced by mutant SOD1 in neuronal cultures. Finally, although survival was not affected, VBIT-12 administration significantly improved muscle endurance in mutant SOD1G93A mice. Therefore, VBIT-12 may represent an attractive therapy for maintaining muscle function during the progression of ALS.
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Affiliation(s)
- Anna Shteinfer-Kuzmine
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Shirel Argueti-Ostrovsky
- Department of Physiology and Cell Biology, Faculty of Health Sciences and The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Marcel F. Leyton-Jaimes
- Department of Physiology and Cell Biology, Faculty of Health Sciences and The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
- Department of Stem Cell and Regenerative Biology, Sherman Fairchild, Harvard University, 7 Divinity Ave., Cambridge, MA 02138, USA
| | - Uttpal Anand
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Salah Abu-Hamad
- Department of Physiology and Cell Biology, Faculty of Health Sciences and The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Ran Zalk
- Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Varda Shoshan-Barmatz
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
- Correspondence: (V.S.-B.); (A.I.)
| | - Adrian Israelson
- Department of Physiology and Cell Biology, Faculty of Health Sciences and The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
- Correspondence: (V.S.-B.); (A.I.)
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9
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VDACs Post-Translational Modifications Discovery by Mass Spectrometry: Impact on Their Hub Function. Int J Mol Sci 2021; 22:ijms222312833. [PMID: 34884639 PMCID: PMC8657666 DOI: 10.3390/ijms222312833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/12/2021] [Accepted: 11/23/2021] [Indexed: 12/23/2022] Open
Abstract
VDAC (voltage-dependent anion selective channel) proteins, also known as mitochondrial porins, are the most abundant proteins of the outer mitochondrial membrane (OMM), where they play a vital role in various cellular processes, in the regulation of metabolism, and in survival pathways. There is increasing consensus about their function as a cellular hub, connecting bioenergetics functions to the rest of the cell. The structural characterization of VDACs presents challenging issues due to their very high hydrophobicity, low solubility, the difficulty to separate them from other mitochondrial proteins of similar hydrophobicity and the practical impossibility to isolate each single isoform. Consequently, it is necessary to analyze them as components of a relatively complex mixture. Due to the experimental difficulties in their structural characterization, post-translational modifications (PTMs) of VDAC proteins represent a little explored field. Only in recent years, the increasing number of tools aimed at identifying and quantifying PTMs has allowed to increase our knowledge in this field and in the mechanisms that regulate functions and interactions of mitochondrial porins. In particular, the development of nano-reversed phase ultra-high performance liquid chromatography (nanoRP-UHPLC) and ultra-sensitive high-resolution mass spectrometry (HRMS) methods has played a key role in this field. The findings obtained on VDAC PTMs using such methodologies, which permitted an in-depth characterization of these very hydrophobic trans-membrane pore proteins, are summarized in this review.
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Malik C, Siddiqui SI, Ghosh S. Extracellular Signal-Regulated Kinase1 (ERK1)-Mediated Phosphorylation of Voltage-Dependent Anion Channel (VDAC) Suppresses its Conductance. J Membr Biol 2021; 255:107-116. [PMID: 34731249 DOI: 10.1007/s00232-021-00205-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 10/18/2021] [Indexed: 12/12/2022]
Abstract
ERK1 is one of the members of the mitogen-activated protein kinases that regulate important cellular functions. VDAC is located at the outer membrane of mitochondria. Here, an interaction between VDAC and ERK1 has been studied on an artificial planar lipid bilayer using in vitro electrophysiology experiments. We report that VDAC is phosphorylated by ERK1 in the presence of Mg2+-ATP and its single-channel currents are inhibited on the artificial bilayer membrane. Treatment of Alkaline phosphatase on ERK1 phosphorylated VDAC leads to partial recovery of the single-channel VDAC currents. Later, phosphorylation of VDAC was demonstrated by Pro-Q diamond dye. Mass Spectrometric studies indicate phosphorylation of VDAC at Threonine 33, Threonine 55, and Serine 35. In a nutshell, phosphorylation of VDAC leads to the closure of the channel.
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Affiliation(s)
- Chetan Malik
- Department of Biophysics, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Shumaila Iqbal Siddiqui
- Department of Biophysics, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Subhendu Ghosh
- Department of Biophysics, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India.
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Small Hexokinase 1 Peptide against Toxic SOD1 G93A Mitochondrial Accumulation in ALS Rescues the ATP-Related Respiration. Biomedicines 2021; 9:biomedicines9080948. [PMID: 34440152 PMCID: PMC8392704 DOI: 10.3390/biomedicines9080948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/26/2021] [Accepted: 07/31/2021] [Indexed: 12/13/2022] Open
Abstract
Mutations in Cu/Zn Superoxide Dismutase (SOD1) gene represent one of the most common causes of amyotrophic lateral sclerosis (ALS), a fatal neurodegenerative disorder that specifically affects motor neurons (MNs). The dismutase-active SOD1 G93A mutant is responsible for the formation of toxic aggregates onto the mitochondrial surface, using the Voltage-Dependent Anion Channel 1 (VDAC1) as an anchor point to the organelle. VDAC1 is the master regulator of cellular bioenergetics and by binding to hexokinases (HKs) it controls apoptosis. In ALS, however, SOD1 G93A impairs VDAC1 activity and displaces HK1 from mitochondria, promoting organelle dysfunction, and cell death. Using an ALS cell model, we demonstrate that a small synthetic peptide derived from the HK1 sequence (NHK1) recovers the cell viability in a dose–response manner and the defective mitochondrial respiration profile relative to the ADP phosphorylation. This correlates with an unexpected increase of VDAC1 expression and a reduction of SOD1 mutant accumulation at the mitochondrial level. Overall, our findings provide important new insights into the development of therapeutic molecules to fight ALS and help to better define the link between altered mitochondrial metabolism and MNs death in the disease.
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Mitochondrial Oxidative and Nitrosative Stress as a Therapeutic Target in Diseases. Antioxidants (Basel) 2021; 10:antiox10020314. [PMID: 33672490 PMCID: PMC7923627 DOI: 10.3390/antiox10020314] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 02/14/2021] [Indexed: 12/26/2022] Open
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De Pinto V. Renaissance of VDAC: New Insights on a Protein Family at the Interface between Mitochondria and Cytosol. Biomolecules 2021; 11:biom11010107. [PMID: 33467485 PMCID: PMC7831034 DOI: 10.3390/biom11010107] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/10/2021] [Accepted: 01/12/2021] [Indexed: 12/14/2022] Open
Abstract
It has become impossible to review all the existing literature on Voltage-Dependent Anion selective Channel (VDAC) in a single article. A real Renaissance of studies brings this protein to the center of decisive knowledge both for cell physiology and therapeutic application. This review, after highlighting the similarities between the cellular context and the study methods of the solute carriers present in the inner membrane and VDAC in the outer membrane of the mitochondria, will focus on the isoforms of VDAC and their biochemical characteristics. In particular, the possible reasons for their evolutionary onset will be discussed. The variations in their post-translational modifications and the differences between the regulatory regions of their genes, probably the key to understanding the current presence of these genes, will be described. Finally, the situation in the higher eukaryotes will be compared to that of yeast, a unicellular eukaryote, where there is only one active isoform and the role of VDAC in energy metabolism is better understood.
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Affiliation(s)
- Vito De Pinto
- Department of Biomedicine and Biotechnology Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy; ; Tel.: +39-095-73842444
- we.MitoBiotech.srl, c.so Italia 172, 95129 Catania, Italy
- National Institute of Biostructures and Biosystems, Section of Catania, 00136 Rome, Italy
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