1
|
Wang W, Matunis MJ. Paralogue-Specific Roles of SUMO1 and SUMO2/3 in Protein Quality Control and Associated Diseases. Cells 2023; 13:8. [PMID: 38201212 PMCID: PMC10778024 DOI: 10.3390/cells13010008] [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: 11/16/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024] Open
Abstract
Small ubiquitin-related modifiers (SUMOs) function as post-translational protein modifications and regulate nearly every aspect of cellular function. While a single ubiquitin protein is expressed across eukaryotic organisms, multiple SUMO paralogues with distinct biomolecular properties have been identified in plants and vertebrates. Five SUMO paralogues have been characterized in humans, with SUMO1, SUMO2 and SUMO3 being the best studied. SUMO2 and SUMO3 share 97% protein sequence homology (and are thus referred to as SUMO2/3) but only 47% homology with SUMO1. To date, thousands of putative sumoylation substrates have been identified thanks to advanced proteomic techniques, but the identification of SUMO1- and SUMO2/3-specific modifications and their unique functions in physiology and pathology are not well understood. The SUMO2/3 paralogues play an important role in proteostasis, converging with ubiquitylation to mediate protein degradation. This function is achieved primarily through SUMO-targeted ubiquitin ligases (STUbLs), which preferentially bind and ubiquitylate poly-SUMO2/3 modified proteins. Effects of the SUMO1 paralogue on protein solubility and aggregation independent of STUbLs and proteasomal degradation have also been reported. Consistent with these functions, sumoylation is implicated in multiple human diseases associated with disturbed proteostasis, and a broad range of pathogenic proteins have been identified as SUMO1 and SUMO2/3 substrates. A better understanding of paralogue-specific functions of SUMO1 and SUMO2/3 in cellular protein quality control may therefore provide novel insights into disease pathogenesis and therapeutic innovation. This review summarizes current understandings of the roles of sumoylation in protein quality control and associated diseases, with a focus on the specific effects of SUMO1 and SUMO2/3 paralogues.
Collapse
Affiliation(s)
| | - Michael J. Matunis
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA;
| |
Collapse
|
2
|
Chang L, Fukuoka Y, Aouizerat BE, Zhang L, Flowers E. Prediction of Weight Loss in Filipino Americans to Decrease Risk for Type 2 Diabetes: Using Multi-Dimensional Data (Preprint). JMIR Diabetes 2022; 8:e44018. [PMID: 37040172 PMCID: PMC10131631 DOI: 10.2196/44018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 02/26/2023] [Accepted: 02/28/2023] [Indexed: 03/04/2023] Open
Abstract
BACKGROUND Type 2 diabetes (T2D) has an immense disease burden, affecting millions of people worldwide and costing billions of dollars in treatment. As T2D is a multifactorial disease with both genetic and nongenetic influences, accurate risk assessments for patients are difficult to perform. Machine learning has served as a useful tool in T2D risk prediction, as it can analyze and detect patterns in large and complex data sets like that of RNA sequencing. However, before machine learning can be implemented, feature selection is a necessary step to reduce the dimensionality in high-dimensional data and optimize modeling results. Different combinations of feature selection methods and machine learning models have been used in studies reporting disease predictions and classifications with high accuracy. OBJECTIVE The purpose of this study was to assess the use of feature selection and classification approaches that integrate different data types to predict weight loss for the prevention of T2D. METHODS The data of 56 participants (ie, demographic and clinical factors, dietary scores, step counts, and transcriptomics) were obtained from a previously completed randomized clinical trial adaptation of the Diabetes Prevention Program study. Feature selection methods were used to select for subsets of transcripts to be used in the selected classification approaches: support vector machine, logistic regression, decision trees, random forest, and extremely randomized decision trees (extra-trees). Data types were included in different classification approaches in an additive manner to assess model performance for the prediction of weight loss. RESULTS Average waist and hip circumference were found to be different between those who exhibited weight loss and those who did not exhibit weight loss (P=.02 and P=.04, respectively). The incorporation of dietary and step count data did not improve modeling performance compared to classifiers that included only demographic and clinical data. Optimal subsets of transcripts identified through feature selection yielded higher prediction accuracy than when all available transcripts were included. After comparison of different feature selection methods and classifiers, DESeq2 as a feature selection method and an extra-trees classifier with and without ensemble learning provided the most optimal results, as defined by differences in training and testing accuracy, cross-validated area under the curve, and other factors. We identified 5 genes in two or more of the feature selection subsets (ie, CDP-diacylglycerol-inositol 3-phosphatidyltransferase [CDIPT], mannose receptor C type 2 [MRC2], PAT1 homolog 2 [PATL2], regulatory factor X-associated ankyrin containing protein [RFXANK], and small ubiquitin like modifier 3 [SUMO3]). CONCLUSIONS Our results suggest that the inclusion of transcriptomic data in classification approaches for prediction has the potential to improve weight loss prediction models. Identification of which individuals are likely to respond to interventions for weight loss may help to prevent incident T2D. Out of the 5 genes identified as optimal predictors, 3 (ie, CDIPT, MRC2, and SUMO3) have been previously shown to be associated with T2D or obesity. TRIAL REGISTRATION ClinicalTrials.gov NCT02278939; https://clinicaltrials.gov/ct2/show/NCT02278939.
Collapse
Affiliation(s)
- Lisa Chang
- Department of Physiological Nursing, University of California, San Francisco, San Francisco, CA, United States
- Keck Graduate Institute, Claremont, CA, United States
| | - Yoshimi Fukuoka
- Department of Physiological Nursing, University of California, San Francisco, San Francisco, CA, United States
| | - Bradley E Aouizerat
- Bluestone Center for Clinical Research, New York University, New York, NY, United States
- Department of Oral and Maxillofacial Surgery, New York University, New York, NY, United States
| | - Li Zhang
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, United States
- Department of Medicine, University of California San Francisco, San Francisco, CA, United States
| | - Elena Flowers
- Department of Physiological Nursing, University of California, San Francisco, San Francisco, CA, United States
- Institute for Human Genetics, University of California San Francisco, San Francisco, CA, United States
| |
Collapse
|
3
|
Chang KC. Influence of Sox protein SUMOylation on neural development and regeneration. Neural Regen Res 2022; 17:477-481. [PMID: 34380874 PMCID: PMC8504373 DOI: 10.4103/1673-5374.320968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
SRY-related HMG-box (Sox) transcription factors are known to regulate central nervous system development and are involved in several neurological diseases. Post-translational modification of Sox proteins is known to alter their functions in the central nervous system. Among the different types of post-translational modification, small ubiquitin-like modifier (SUMO) modification of Sox proteins has been shown to modify their transcriptional activity. Here, we review the mechanisms of three Sox proteins in neuronal development and disease, along with their transcriptional changes under SUMOylation. Across three species, lysine is the conserved residue for SUMOylation. In Drosophila, SUMOylation of SoxN plays a repressive role in transcriptional activity, which impairs central nervous system development. However, deSUMOylation of SoxE and Sox11 plays neuroprotective roles, which promote neural crest precursor formation in Xenopus and retinal ganglion cell differentiation as well as axon regeneration in the rodent. We further discuss a potential translational therapy by SUMO site modification using AAV gene transduction and Clustered regularly interspaced short palindromic repeats-Cas9 technology. Understanding the underlying mechanisms of Sox SUMOylation, especially in the rodent system, may provide a therapeutic strategy to address issues associated with neuronal development and neurodegeneration.
Collapse
Affiliation(s)
- Kun-Che Chang
- Department of Ophthalmology, Louis J. Fox Center for Vision Restoration, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| |
Collapse
|
4
|
Yamada S, Sato A, Ishihara N, Akiyama H, Sakakibara SI. Drp1 SUMO/deSUMOylation by Senp5 isoforms influences ER tubulation and mitochondrial dynamics to regulate brain development. iScience 2021; 24:103484. [PMID: 34988397 PMCID: PMC8710555 DOI: 10.1016/j.isci.2021.103484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 11/01/2021] [Accepted: 11/19/2021] [Indexed: 12/01/2022] Open
Affiliation(s)
- Seiya Yamada
- Laboratory for Molecular Neurobiology, Graduate School of Human Sciences, Faculty of Human Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan
| | - Ayaka Sato
- Laboratory for Molecular Neurobiology, Graduate School of Human Sciences, Faculty of Human Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan
| | - Naotada Ishihara
- Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Hiroki Akiyama
- Laboratory for Molecular Neurobiology, Graduate School of Human Sciences, Faculty of Human Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan
- Advanced Research Center for Human Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan
- Corresponding author
| | - Shin-ichi Sakakibara
- Laboratory for Molecular Neurobiology, Graduate School of Human Sciences, Faculty of Human Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan
- Advanced Research Center for Human Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan
- Corresponding author
| |
Collapse
|
5
|
Thompson AG, Oeckl P, Feneberg E, Bowser R, Otto M, Fischer R, Kessler B, Turner MR. Advancing mechanistic understanding and biomarker development in amyotrophic lateral sclerosis. Expert Rev Proteomics 2021; 18:977-994. [PMID: 34758687 DOI: 10.1080/14789450.2021.2004890] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Proteomic analysis has contributed significantly to the study of the neurodegenerative disease amyotrophic lateral sclerosis (ALS). It has helped to define the pathological change common to nearly all cases, namely intracellular aggregates of phosphorylated TDP-43, shifting the focus of pathogenesis in ALS toward RNA biology. Proteomics has also uniquely underpinned the delineation of disease mechanisms in model systems and has been central to recent advances in human ALS biomarker development. AREAS COVERED The contribution of proteomics to understanding the cellular pathological changes, disease mechanisms, and biomarker development in ALS are covered. EXPERT OPINION Proteomics has delivered unique insights into the pathogenesis of ALS and advanced the goal of objective measurements of disease activity to improve therapeutic trials. Further developments in sensitivity and quantification are expected, with application to the presymptomatic phase of human disease offering the hope of prevention strategies.
Collapse
Affiliation(s)
| | - Patrick Oeckl
- Department of Neurology, University of Ulm, Ulm, Germany.,German Center for Neurodegenerative Diseases (Dzne e.V.), Ulm, Germany
| | - Emily Feneberg
- Department of Neurology, Klinikum Rechts der Isar, Technical University Munich, Munich, Germany
| | - Robert Bowser
- Departments of Neurology and Translational Neuroscience, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Markus Otto
- Department of Neurology, University of Ulm, Ulm, Germany.,Department of Neurology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Roman Fischer
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Benedikt Kessler
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Martin R Turner
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| |
Collapse
|
6
|
Maraschi A, Gumina V, Dragotto J, Colombrita C, Mompeán M, Buratti E, Silani V, Feligioni M, Ratti A. SUMOylation Regulates TDP-43 Splicing Activity and Nucleocytoplasmic Distribution. Mol Neurobiol 2021; 58:5682-5702. [PMID: 34390468 PMCID: PMC8599232 DOI: 10.1007/s12035-021-02505-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 07/22/2021] [Indexed: 12/13/2022]
Abstract
The nuclear RNA-binding protein TDP-43 forms abnormal cytoplasmic aggregates in the brains of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) patients and several molecular mechanisms promoting TDP-43 cytoplasmic mislocalization and aggregation have been proposed, including defects in nucleocytoplasmic transport, stress granules (SG) disassembly and post-translational modifications (PTM). SUMOylation is a PTM which regulates a variety of cellular processes and, similarly to ubiquitination, targets lysine residues. To investigate the possible regulatory effects of SUMOylation on TDP-43 activity and trafficking, we first assessed that TDP-43 is SUMO-conjugated in the nuclear compartment both covalently and non-covalently in the RRM1 domain at the predicted lysine 136 and SUMO-interacting motif (SIM, 106–110 residues), respectively. By using the SUMO-mutant TDP-43 K136R protein, we demonstrated that SUMOylation modifies TDP-43 splicing activity, specifically exon skipping, and influences its sub-cellular localization and recruitment to SG after oxidative stress. When promoting deSUMOylation by SENP1 enzyme over-expression or by treatment with the cell-permeable SENP1 peptide TS-1, the cytoplasmic localization of TDP-43 increased, depending on its SUMOylation. Moreover, deSUMOylation by TS-1 peptide favoured the formation of small cytoplasmic aggregates of the C-terminal TDP-43 fragment p35, still containing the SUMO lysine target 136, but had no effect on the already formed p25 aggregates. Our data suggest that TDP-43 can be post-translationally modified by SUMOylation which may regulate its splicing function and trafficking, indicating a novel and druggable mechanism to explore as its dysregulation may lead to TDP-43 pathological aggregation in ALS and FTD.
Collapse
Affiliation(s)
- AnnaMaria Maraschi
- Department of Neurology, Stroke Unit and Laboratory of Neuroscience, Istituto Auxologico Italiano, IRCCS, Piazzale Brescia 20, 20149 Milan, Italy
| | - Valentina Gumina
- Department of Neurology, Stroke Unit and Laboratory of Neuroscience, Istituto Auxologico Italiano, IRCCS, Piazzale Brescia 20, 20149 Milan, Italy
| | - Jessica Dragotto
- Laboratory of Neuronal Cell Signaling, EBRI Rita Levi-Montalcini Foundation, Viale Regina Elena 295, 00161 Rome, Italy
| | - Claudia Colombrita
- Department of Neurology, Stroke Unit and Laboratory of Neuroscience, Istituto Auxologico Italiano, IRCCS, Piazzale Brescia 20, 20149 Milan, Italy
| | - Miguel Mompeán
- “Rocasolano” Institute for Physical Chemistry, Spanish National Research Council, Serrano 119, 28006 Madrid, Spain
| | - Emanuele Buratti
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Padriciano 99, 34149 Trieste, Italy
| | - Vincenzo Silani
- Department of Neurology, Stroke Unit and Laboratory of Neuroscience, Istituto Auxologico Italiano, IRCCS, Piazzale Brescia 20, 20149 Milan, Italy
- Aldo Ravelli” Center for Neurotechnology and Experimental Brain Therapeutics, Università Degli Studi Di Milano, Via A. di Rudinì 8, 20142 Milan, Italy
- Department of Pathophysiology and Transplantation, Dino Ferrari” Center, Università Degli Studi Di Milano, Via F. Sforza 35, 20122 Milan, Italy
| | - Marco Feligioni
- Laboratory of Neuronal Cell Signaling, EBRI Rita Levi-Montalcini Foundation, Viale Regina Elena 295, 00161 Rome, Italy
- Department of Neurorehabilitation Sciences, Casa Di Cura del Policlinico, Via Giuseppe Dezza 48, 20144 Milan, Italy
| | - Antonia Ratti
- Department of Neurology, Stroke Unit and Laboratory of Neuroscience, Istituto Auxologico Italiano, IRCCS, Piazzale Brescia 20, 20149 Milan, Italy
- Department of Medical Biotechnology and Translational Medicine, Università Degli Studi Di Milano, Via Fratelli Cervi 93, 20090 Segrate, Milan Italy
| |
Collapse
|
7
|
Trist BG, Hilton JB, Hare DJ, Crouch PJ, Double KL. Superoxide Dismutase 1 in Health and Disease: How a Frontline Antioxidant Becomes Neurotoxic. Angew Chem Int Ed Engl 2021; 60:9215-9246. [PMID: 32144830 PMCID: PMC8247289 DOI: 10.1002/anie.202000451] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Indexed: 12/11/2022]
Abstract
Cu/Zn superoxide dismutase (SOD1) is a frontline antioxidant enzyme catalysing superoxide breakdown and is important for most forms of eukaryotic life. The evolution of aerobic respiration by mitochondria increased cellular production of superoxide, resulting in an increased reliance upon SOD1. Consistent with the importance of SOD1 for cellular health, many human diseases of the central nervous system involve perturbations in SOD1 biology. But far from providing a simple demonstration of how disease arises from SOD1 loss-of-function, attempts to elucidate pathways by which atypical SOD1 biology leads to neurodegeneration have revealed unexpectedly complex molecular characteristics delineating healthy, functional SOD1 protein from that which likely contributes to central nervous system disease. This review summarises current understanding of SOD1 biology from SOD1 genetics through to protein function and stability.
Collapse
Affiliation(s)
- Benjamin G. Trist
- Brain and Mind Centre and Discipline of PharmacologyThe University of Sydney, CamperdownSydneyNew South Wales2050Australia
| | - James B. Hilton
- Department of Pharmacology and TherapeuticsThe University of MelbourneParkvilleVictoria3052Australia
| | - Dominic J. Hare
- Brain and Mind Centre and Discipline of PharmacologyThe University of Sydney, CamperdownSydneyNew South Wales2050Australia
- School of BioSciencesThe University of MelbourneParkvilleVictoria3052Australia
- Atomic Medicine InitiativeThe University of Technology SydneyBroadwayNew South Wales2007Australia
| | - Peter J. Crouch
- Department of Pharmacology and TherapeuticsThe University of MelbourneParkvilleVictoria3052Australia
| | - Kay L. Double
- Brain and Mind Centre and Discipline of PharmacologyThe University of Sydney, CamperdownSydneyNew South Wales2050Australia
| |
Collapse
|
8
|
Trist BG, Hilton JB, Hare DJ, Crouch PJ, Double KL. Superoxide Dismutase 1 in Health and Disease: How a Frontline Antioxidant Becomes Neurotoxic. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000451] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Benjamin G. Trist
- Brain and Mind Centre and Discipline of Pharmacology The University of Sydney, Camperdown Sydney New South Wales 2050 Australia
| | - James B. Hilton
- Department of Pharmacology and Therapeutics The University of Melbourne Parkville Victoria 3052 Australia
| | - Dominic J. Hare
- Brain and Mind Centre and Discipline of Pharmacology The University of Sydney, Camperdown Sydney New South Wales 2050 Australia
- School of BioSciences The University of Melbourne Parkville Victoria 3052 Australia
- Atomic Medicine Initiative The University of Technology Sydney Broadway New South Wales 2007 Australia
| | - Peter J. Crouch
- Department of Pharmacology and Therapeutics The University of Melbourne Parkville Victoria 3052 Australia
| | - Kay L. Double
- Brain and Mind Centre and Discipline of Pharmacology The University of Sydney, Camperdown Sydney New South Wales 2050 Australia
| |
Collapse
|
9
|
He J, Cheng J, Wang T. SUMOylation-Mediated Response to Mitochondrial Stress. Int J Mol Sci 2020; 21:ijms21165657. [PMID: 32781782 PMCID: PMC7460625 DOI: 10.3390/ijms21165657] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 12/14/2022] Open
Abstract
Mitochondrial stress is considered as a factor that reprograms the mitochondrial biogenesis and metabolism. As known, SUMOylation occurs through a series of stress-induced biochemical reactions. During the process of SUMOylation, the small ubiquitin-like modifier (SUMO) and its specific proteases (SENPs) are key signal molecules. Furthermore, they are considered as novel mitochondrial stress sensors that respond to the signals produced by various stresses. The responses are critical for mitochondrial homeostasis. The scope of this review is to provide an overview of the function of SUMOylation in the mitochondrial stress response, to delineate a SUMOylation-involved signal network diagram, and to highlight a number of key questions that remain answered.
Collapse
Affiliation(s)
- Jianli He
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China;
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jinke Cheng
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China;
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Correspondence: (J.C.); (T.W.); Tel.: +86-(21)-6384-6590-776327 (J.C.); +86-(21)-6384-6590-778026 (T.W.)
| | - Tianshi Wang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China;
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Correspondence: (J.C.); (T.W.); Tel.: +86-(21)-6384-6590-776327 (J.C.); +86-(21)-6384-6590-778026 (T.W.)
| |
Collapse
|
10
|
Wada H, Suzuki D, Niikura T. Regulation of ALS-Associated SOD1 Mutant SUMOylation and Aggregation by SENP and PIAS Family Proteins. J Mol Neurosci 2020; 70:2007-2014. [PMID: 32462635 DOI: 10.1007/s12031-020-01604-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 05/19/2020] [Indexed: 12/11/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease specific to motor neurons. Pathogenic mutations in an ALS-associated gene encoding superoxide dismutase 1 (SOD1) have been identified in familial ALS (fALS) cases. SOD1 with fALS-linked mutations is prone to form cytotoxic aggregates that cause cellular dysfunction. We previously demonstrated that the modification of SOD1 by small ubiquitin-like modifier (SUMO) 3 enhances the aggregation of fALS-linked SOD1 mutants. SUMOylation is a reversible post-translational modification targeting lysine residues. SUMO conjugation is mediated by the enzymes E1, E2, and E3, and deconjugation is catalyzed by deSUMOylation enzymes. To understand the process of SOD1 aggregation, we examined the involvement of protein inhibitor of activated STAT (PIAS) family and sentrin-specific protease (SENP) family proteins in the SUMOylation of SOD1 mutants. We found that all four types of PIAS family proteins, E3 ligase of SUMOylation, increased SUMOylation of SOD1 mutants. Among three SENP family proteins tested, deSUMOylation enzymes, SENP1, exhibited the most efficient deconjugation effect. In co-expression experiments, PIASy and SENP1 increased and decreased the number of cells exhibiting SOD1-mutant aggregation, respectively, confirming the effect of these enzymes on SOD1 aggregation. These findings suggest that regulation of SUMOylation affects the pathogenesis of ALS.
Collapse
Affiliation(s)
- Harmony Wada
- Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
| | - Dan Suzuki
- Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
| | - Takako Niikura
- Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan.
| |
Collapse
|
11
|
Do Post-Translational Modifications Influence Protein Aggregation in Neurodegenerative Diseases: A Systematic Review. Brain Sci 2020; 10:brainsci10040232. [PMID: 32290481 PMCID: PMC7226274 DOI: 10.3390/brainsci10040232] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/05/2020] [Accepted: 04/07/2020] [Indexed: 12/14/2022] Open
Abstract
The accumulation of abnormal protein aggregates represents a universal hallmark of neurodegenerative diseases (NDDs). Post-translational modifications (PTMs) regulate protein structure and function. Dysregulated PTMs may influence the propensity for protein aggregation in NDD-proteinopathies. To investigate this, we systematically reviewed the literature to evaluate effects of PTMs on aggregation propensity for major proteins linked to the pathogenesis and/or progression of NDDs. A search of PubMed, MEDLINE, EMBASE, and Web of Science Core Collection was conducted to retrieve studies that investigated an association between PTMs and protein aggregation in seven NDDs: Alzheimer’s disease (AD), Parkinson’s disease (PD), Huntington’s disease (HD), amyotrophic lateral sclerosis (ALS), spinocerebellar ataxias, transmissible spongiform encephalopathy, and multiple sclerosis. Together, 1222 studies were identified, of which 69 met eligibility criteria. We identified that the following PTMs, in isolation or combination, potentially act as modulators of proteinopathy in NDDs: isoaspartate formation in Aβ, phosphorylation of Aβ or tau in AD; acetylation, 4-hydroxy-2-neonal modification, O-GlcNAcylation or phosphorylation of α-synuclein in PD; acetylation or phosphorylation of TAR DNA-binding protein-43 in ALS, and SUMOylation of superoxide dismutase-1 in ALS; and phosphorylation of huntingtin in HD. The potential pharmacological manipulation of these aggregation-modulating PTMs represents an as-yet untapped source of therapy to treat NDDs.
Collapse
|
12
|
Banks CJ, Andersen JL. Mechanisms of SOD1 regulation by post-translational modifications. Redox Biol 2019; 26:101270. [PMID: 31344643 PMCID: PMC6658992 DOI: 10.1016/j.redox.2019.101270] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/28/2019] [Accepted: 07/03/2019] [Indexed: 12/18/2022] Open
Abstract
SOD1 is commonly known for its ROS scavenging activity, but recent work has uncovered additional roles in modulating metabolism, maintaining redox balance, and regulating transcription. This new paradigm of expanded SOD1 function raises questions regarding the regulation of SOD1 and the cellular partitioning of its biological roles. Despite decades of research on SOD1, much of which focuses on its pathogenic role in amyotrophic lateral sclerosis, relatively little is known about its regulation by post-translational modifications (PTMs). However, over the last decade, advancements in mass spectrometry have led to a boom in PTM discovery across the proteome, which has also revealed new mechanisms of SOD1 regulation by PTMs and an array of SOD1 PTMs with high likelihood of biological function. In this review, we address emerging mechanisms of SOD1 regulation by post-translational modifications, many of which begin to shed light on how the various functions of SOD1 are regulated within the cell.
Collapse
Affiliation(s)
- C J Banks
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - J L Andersen
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA.
| |
Collapse
|
13
|
Kurtishi A, Rosen B, Patil KS, Alves GW, Møller SG. Cellular Proteostasis in Neurodegeneration. Mol Neurobiol 2018; 56:3676-3689. [PMID: 30182337 DOI: 10.1007/s12035-018-1334-z] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 08/27/2018] [Indexed: 02/06/2023]
Abstract
The term proteostasis reflects the fine-tuned balance of cellular protein levels, mediated through a vast network of biochemical pathways. This requires the regulated control of protein folding, post-translational modification, and protein degradation. Due to the complex interactions and intersection of proteostasis pathways, exposure to stress conditions may lead to a disruption of the entire network. Incorrect protein folding and/or modifications during protein synthesis results in inactive or toxic proteins, which may overload degradation mechanisms. Further, a disruption of autophagy and the endoplasmic reticulum degradation pathway may result in additional cellular stress which could ultimately lead to cell death. Neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease, Huntington's disease, and Amyotrophic Lateral Sclerosis all share common risk factors such as oxidative stress, aging, environmental stress, and protein dysfunction; all of which alter cellular proteostasis. The differing pathologies observed in neurodegenerative diseases are determined by factors such as location-specific neuronal death, source of protein dysfunction, and the cell's ability to counter proteotoxicity. In this review, we discuss how the disruption in cellular proteostasis contributes to the onset and progression of neurodegenerative diseases.
Collapse
Affiliation(s)
- Alberim Kurtishi
- Department of Biological Sciences, St. John's University, 8000 Utopia Parkway, New York, 11439, USA
| | - Benjamin Rosen
- Department of Biological Sciences, St. John's University, 8000 Utopia Parkway, New York, 11439, USA
| | - Ketan S Patil
- Department of Biological Sciences, St. John's University, 8000 Utopia Parkway, New York, 11439, USA
| | - Guido W Alves
- Norwegian Center for Movement Disorders, Stavanger University Hospital, Stavanger, Norway
| | - Simon G Møller
- Department of Biological Sciences, St. John's University, 8000 Utopia Parkway, New York, 11439, USA. .,Norwegian Center for Movement Disorders, Stavanger University Hospital, Stavanger, Norway.
| |
Collapse
|
14
|
Sharma S, Young RJ, Chen J, Chen X, Oh EC, Schiller MR. Minimotifs dysfunction is pervasive in neurodegenerative disorders. ALZHEIMER'S & DEMENTIA (NEW YORK, N. Y.) 2018; 4:414-432. [PMID: 30225339 PMCID: PMC6139474 DOI: 10.1016/j.trci.2018.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Minimotifs are modular contiguous peptide sequences in proteins that are important for posttranslational modifications, binding to other molecules, and trafficking to specific subcellular compartments. Some molecular functions of proteins in cellular pathways can be predicted from minimotif consensus sequences identified through experimentation. While a role for minimotifs in regulating signal transduction and gene regulation during disease pathogenesis (such as infectious diseases and cancer) is established, the therapeutic use of minimotif mimetic drugs is limited. In this review, we discuss a general theme identifying a pervasive role of minimotifs in the pathomechanism of neurodegenerative diseases. Beyond their longstanding history in the genetics of familial neurodegeneration, minimotifs are also major players in neurotoxic protein aggregation, aberrant protein trafficking, and epigenetic regulation. Generalizing the importance of minimotifs in neurodegenerative diseases offers a new perspective for the future study of neurodegenerative mechanisms and the investigation of new therapeutics.
Collapse
Affiliation(s)
- Surbhi Sharma
- Nevada Institute of Personalized Medicine, Las Vegas, NV, USA
- School of Life Sciences, Las Vegas, NV, USA
| | - Richard J. Young
- Nevada Institute of Personalized Medicine, Las Vegas, NV, USA
- School of Life Sciences, Las Vegas, NV, USA
| | - Jingchun Chen
- Nevada Institute of Personalized Medicine, Las Vegas, NV, USA
| | - Xiangning Chen
- Nevada Institute of Personalized Medicine, Las Vegas, NV, USA
- Department of Psychology, Las Vegas, NV, USA
| | - Edwin C. Oh
- Nevada Institute of Personalized Medicine, Las Vegas, NV, USA
- School of Medicine, Las Vegas, NV, USA
| | - Martin R. Schiller
- Nevada Institute of Personalized Medicine, Las Vegas, NV, USA
- School of Life Sciences, Las Vegas, NV, USA
- School of Medicine, Las Vegas, NV, USA
| |
Collapse
|
15
|
Maruyama T, Abe Y, Niikura T. SENP1 and SENP2 regulate SUMOylation of amyloid precursor protein. Heliyon 2018; 4:e00601. [PMID: 29862363 PMCID: PMC5968171 DOI: 10.1016/j.heliyon.2018.e00601] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 03/19/2018] [Accepted: 04/05/2018] [Indexed: 11/29/2022] Open
Abstract
Amyloid β, a key molecule in the pathogenesis of Alzheimer's disease (AD), is produced from amyloid precursor protein (APP) by the cleavage of secretases. APP is SUMOylated near the cleavage site of β-secretase. SUMOylation of APP reduces amyloid β production, but its regulatory system is still unclear. SUMOylation, a modification at a lysine residue of a target protein, is mediated by activating, conjugating, and ligating enzymes and is reversed by a family of sentrin/SUMO-specific proteases (SENPs). Here, we found that both SENP1 and SENP2 induced de-SUMOylation of APP. Using quantitative PCR, we also found that expression of SENP1 but not SENP2 increased in an age-dependent manner only in female mice. The results of immunoblot analyses showed that the protein expression was consistent with the PCR results. Females, compared to males, have a higher incidence of AD in humans and show more aggressive amyloid pathology in AD mouse models. Our results provide a clue to understanding the role of SUMOylation in the sex difference in AD pathogenesis.
Collapse
Affiliation(s)
- Takuma Maruyama
- Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University, Japan
| | - Yoichiro Abe
- Department of Pharmacology, Keio University School of Medicine, Japan
| | - Takako Niikura
- Department of Information and Communication Sciences, Faculty of Science and Technology, Sophia University, Japan
| |
Collapse
|
16
|
Maurel C, Dangoumau A, Marouillat S, Brulard C, Chami A, Hergesheimer R, Corcia P, Blasco H, Andres CR, Vourc'h P. Causative Genes in Amyotrophic Lateral Sclerosis and Protein Degradation Pathways: a Link to Neurodegeneration. Mol Neurobiol 2018; 55:6480-6499. [PMID: 29322304 DOI: 10.1007/s12035-017-0856-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 12/20/2017] [Indexed: 12/11/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a disease caused by the degeneration of motor neurons (MNs) leading to progressive muscle weakness and atrophy. Several molecular pathways have been implicated, such as glutamate-mediated excitotoxicity, defects in cytoskeletal dynamics and axonal transport, disruption of RNA metabolism, and impairments in proteostasis. ALS is associated with protein accumulation in the cytoplasm of cells undergoing neurodegeneration, which is a hallmark of the disease. In this review, we focus on mechanisms of proteostasis, particularly protein degradation, and discuss how they are related to the genetics of ALS. Indeed, the genetic bases of the disease with the implication of more than 30 genes associated with familial ALS to date, together with the important increase in understanding of endoplasmic reticulum (ER) stress, proteasomal degradation, and autophagy, allow researchers to better understand the mechanisms underlying the selective death of motor neurons in ALS. It is clear that defects in proteostasis are involved in this type of cellular degeneration, but whether or not these mechanisms are primary causes or merely consequential remains to be clearly demonstrated. Novel cellular and animal models allowing chronic expression of mutant proteins, for example, are required. Further studies linking genetic discoveries in ALS to mechanisms of protein clearance will certainly be crucial in order to accelerate translational and clinical research towards new therapeutic targets and strategies.
Collapse
Affiliation(s)
- C Maurel
- UMR INSERM U1253, Université de Tours, 37032, Tours, France
| | - A Dangoumau
- UMR INSERM U1253, Université de Tours, 37032, Tours, France
| | - S Marouillat
- UMR INSERM U1253, Université de Tours, 37032, Tours, France
| | - C Brulard
- UMR INSERM U1253, Université de Tours, 37032, Tours, France
| | - A Chami
- UMR INSERM U1253, Université de Tours, 37032, Tours, France
| | - R Hergesheimer
- UMR INSERM U1253, Université de Tours, 37032, Tours, France
| | - P Corcia
- UMR INSERM U1253, Université de Tours, 37032, Tours, France
- Service de Neurologie, CHRU de Tours, 37044, Tours, France
| | - H Blasco
- UMR INSERM U1253, Université de Tours, 37032, Tours, France
- Service de Biochimie et de Biologie Moléculaire, CHRU de Tours, 37044, Tours, France
| | - C R Andres
- UMR INSERM U1253, Université de Tours, 37032, Tours, France
- Service de Biochimie et de Biologie Moléculaire, CHRU de Tours, 37044, Tours, France
| | - P Vourc'h
- UMR INSERM U1253, Université de Tours, 37032, Tours, France.
- Service de Biochimie et de Biologie Moléculaire, CHRU de Tours, 37044, Tours, France.
| |
Collapse
|
17
|
Kim SJ, Guerrero N, Wassef G, Xiao J, Mehta HH, Cohen P, Yen K. The mitochondrial-derived peptide humanin activates the ERK1/2, AKT, and STAT3 signaling pathways and has age-dependent signaling differences in the hippocampus. Oncotarget 2018; 7:46899-46912. [PMID: 27384491 PMCID: PMC5216912 DOI: 10.18632/oncotarget.10380] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 06/20/2016] [Indexed: 12/23/2022] Open
Abstract
Humanin is a small secreted peptide that is encoded in the mitochondrial genome. Humanin and its analogues have a protective role in multiple age-related diseases including type 2 diabetes and Alzheimer's disease, through cytoprotective and neuroprotective effects both in vitro and in vivo. However, the humanin-mediated signaling pathways are not well understood. In this paper, we demonstrate that humanin acts through the GP130/IL6ST receptor complex to activate AKT, ERK1/2, and STAT3 signaling pathways. Humanin treatment increases phosphorylation in AKT, ERK 1/2, and STAT3 where PI3K, MEK, and JAK are involved in the activation of those three signaling pathways, respectively. Furthermore, old mice, but not young mice, injected with humanin showed an increase in phosphorylation in AKT and ERK1/2 in the hippocampus. These findings uncover a key signaling pathway of humanin that is important for humanin's function and also demonstrates an age-specific in vivo effect in a region of the brain that is critical for memory formation in an age-dependent manner.
Collapse
Affiliation(s)
- Su-Jeong Kim
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Noel Guerrero
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Gabriella Wassef
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Jialin Xiao
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Hemal H Mehta
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Pinchas Cohen
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Kelvin Yen
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| |
Collapse
|
18
|
Abstract
Protein modification with the small ubiquitin-related modifier (SUMO) can affect protein function, enzyme activity, protein-protein interactions, protein stability, protein targeting and cellular localization. SUMO influences the function and regulation of metabolic enzymes within pathways, and in some cases targets entire metabolic pathways by affecting the activity of transcription factors or by facilitating the translocation of entire metabolic pathways to subcellular compartments. SUMO modification is also a key component of nutrient- and metabolic-sensing mechanisms that regulate cellular metabolism. In addition to its established roles in maintaining metabolic homeostasis, there is increasing evidence that SUMO is a key factor in facilitating cellular stress responses through the regulation and/or adaptation of the most fundamental metabolic processes, including energy and nucleotide metabolism. This review focuses on the role of SUMO in cellular metabolism and metabolic disease.
Collapse
|
19
|
Sambataro F, Pennuto M. Post-translational Modifications and Protein Quality Control in Motor Neuron and Polyglutamine Diseases. Front Mol Neurosci 2017; 10:82. [PMID: 28408866 PMCID: PMC5374214 DOI: 10.3389/fnmol.2017.00082] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 03/08/2017] [Indexed: 11/30/2022] Open
Abstract
Neurodegenerative diseases, including motor neuron and polyglutamine (polyQ) diseases, are a broad class of neurological disorders. These diseases are characterized by neuronal dysfunction and death, and by the accumulation of toxic aggregation-prone proteins in the forms of inclusions and micro-aggregates. Protein quality control is a cellular mechanism to reduce the burden of accumulation of misfolded proteins, a function that results from the coordinated actions of chaperones and degradation systems, such as the ubiquitin-proteasome system (UPS) and autophagy-lysosomal degradation system. The rate of turnover, aggregation and degradation of the disease-causing proteins is modulated by post-translational modifications (PTMs), such as phosphorylation, arginine methylation, palmitoylation, acetylation, SUMOylation, ubiquitination, and proteolytic cleavage. Here, we describe how PTMs of proteins linked to motor neuron and polyQ diseases can either enhance or suppress protein quality control check and protein aggregation and degradation. The identification of molecular strategies targeting these modifications may offer novel avenues for the treatment of these yet incurable diseases.
Collapse
Affiliation(s)
- Fabio Sambataro
- Department of Experimental and Clinical Medical Sciences, University of UdineUdine, Italy
| | - Maria Pennuto
- Centre for Integrative Biology, Dulbecco Telethon Institute, University of TrentoTrento, Italy
| |
Collapse
|
20
|
Anderson DB, Zanella CA, Henley JM, Cimarosti H. Sumoylation: Implications for Neurodegenerative Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 963:261-281. [PMID: 28197918 DOI: 10.1007/978-3-319-50044-7_16] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The covalent posttranslational modifications of proteins are critical events in signaling cascades that enable cells to efficiently, rapidly and reversibly respond to extracellular stimuli. This is especially important in the CNS where the processes affecting synaptic communication between neurons are highly complex and very tightly regulated. Sumoylation regulates the function and fate of a diverse array of proteins and participates in the complex cell signaling pathways required for cell survival. One of the most complex signaling pathways is synaptic transmission.Correct synaptic function is critical to the working of the brain and its alteration through synaptic plasticity mediates learning, mental disorders and stroke. The investigation of neuronal sumoylation is a new and exciting field and the functional and pathophysiological implications are far-reaching. Sumoylation has already been implicated in a diverse array of neurological disorders. Here we provide an overview of current literature highlighting recent insights into the role of sumoylation in neurodegeneration. In addition we present a brief assessment of drug discovery in the analogous ubiquitin system and extrapolate on the potential for development of novel therapies that might target SUMO-associated mechanisms of neurodegenerative disease.
Collapse
Affiliation(s)
- Dina B Anderson
- Ipsen Bioinnovation Ltd, Units 4-10 The Quadrant, Barton Lane, Abingdon, OX14 3YS, UK
| | - Camila A Zanella
- Department of Pharmacology, Federal University of Santa Catarina, Campus Universitario - Trindade, Florianopolis, CEP, 88040-900, Brazil
| | - Jeremy M Henley
- MRC Centre for Synaptic Plasticity, School of Biochemistry, University of Bristol, University Walk, Bristol, BS8 1TD, UK
| | - Helena Cimarosti
- Department of Pharmacology, Federal University of Santa Catarina, Campus Universitario - Trindade, Florianopolis, CEP, 88040-900, Brazil.
| |
Collapse
|
21
|
Dangoumau A, Marouillat S, Burlaud Gaillard J, Uzbekov R, Veyrat-Durebex C, Blasco H, Arnoult C, Corcia P, Andres CR, Vourc'h P. Inhibition of Pathogenic Mutant SOD1 Aggregation in Cultured Motor Neuronal Cells by Prevention of Its SUMOylation on Lysine 75. NEURODEGENER DIS 2015; 16:161-71. [PMID: 26605782 DOI: 10.1159/000439254] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 08/07/2015] [Indexed: 11/19/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease characterized by the selective death of motor neurons. Mutations in the SOD1 gene encoding the superoxide dismutase 1 are present in 15% of familial ALS cases and in 2% of sporadic cases. These mutations are associated with the formation of SOD1-positive aggregates. The mechanisms of aggregation remain unknown, but posttranslational modifications of SOD1 may be involved. Here, we report that NSC-34 motor neuronal cells expressing mutant SOD1 contained aggregates positive for small ubiquitin modifier-1 (SUMO-1), and in parallel a reduced level of free SUMO-1. CLEM (correlative light and electron microscopy) analysis showed nonorganized cytosolic aggregates for all mutations tested (SOD1A4V, SOD1V31A, and SOD1G93C). We next show that preventing the SUMOylation of mutant SOD1 by the substitution of lysine 75, the SUMOylation site of SOD1, significantly reduces the number of motor neuronal cells with aggregates. These results support the need for further research on the SUMOylation pathways, which may be a potential therapeutic target in ALS.
Collapse
Affiliation(s)
- Audrey Dangoumau
- UMR INSERM U930, Universitx00E9; Franx00E7;ois-Rabelais, Tours, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Ahner A, Gong X, Frizzell RA. Divergent signaling via SUMO modification: potential for CFTR modulation. Am J Physiol Cell Physiol 2015; 310:C175-80. [PMID: 26582473 DOI: 10.1152/ajpcell.00124.2015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The cystic fibrosis transmembrane conductance regulator (CFTR) is generally responsible for the cAMP/PKA regulated anion conductance at the apical membranes of secretory epithelial cells. Mutations in CFTR underlie cystic fibrosis (CF), in which the most common variant, F508del, causes protein misfolding and its proteasome-mediated degradation. A new pathway that contributes to mutant CFTR degradation is mediated by the small heat shock protein, Hsp27, which cooperates with Ubc9, the E2 enzyme for SUMOylation, to selectively conjugate mutant CFTR with SUMO-2/3. This SUMO paralog can form polychains, which are recognized by the ubiquitin E3 enzyme, RNF4, leading to CFTR ubiquitylation and recognition by the proteasome. We found also that F508del CFTR could be modified by SUMO-1, a paralog that does not support SUMO polychain formation. The use of different SUMO paralogs to modify and target a single substrate for divergent purposes is not uncommon. In this short review we discuss the possibility that conjugation with SUMO-1 could protect mutant CFTR from disposal by RNF4 and similar ubiquitin ligases. We hypothesize that such a pathway could contribute to therapeutic efforts to stabilize immature mutant CFTR and thereby enhance the action of therapeutics that correct CFTR trafficking to the apical membranes.
Collapse
Affiliation(s)
- Annette Ahner
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Xiaoyan Gong
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Raymond A Frizzell
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| |
Collapse
|
23
|
Wear MP, Kryndushkin D, O’Meally R, Sonnenberg JL, Cole RN, Shewmaker FP. Proteins with Intrinsically Disordered Domains Are Preferentially Recruited to Polyglutamine Aggregates. PLoS One 2015; 10:e0136362. [PMID: 26317359 PMCID: PMC4552826 DOI: 10.1371/journal.pone.0136362] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 07/31/2015] [Indexed: 12/12/2022] Open
Abstract
Intracellular protein aggregation is the hallmark of several neurodegenerative diseases. Aggregates formed by polyglutamine (polyQ)-expanded proteins, such as Huntingtin, adopt amyloid-like structures that are resistant to denaturation. We used a novel purification strategy to isolate aggregates formed by human Huntingtin N-terminal fragments with expanded polyQ tracts from both yeast and mammalian (PC-12) cells. Using mass spectrometry we identified the protein species that are trapped within these polyQ aggregates. We found that proteins with very long intrinsically-disordered (ID) domains (≥100 amino acids) and RNA-binding proteins were disproportionately recruited into aggregates. The removal of the ID domains from selected proteins was sufficient to eliminate their recruitment into polyQ aggregates. We also observed that several neurodegenerative disease-linked proteins were reproducibly trapped within the polyQ aggregates purified from mammalian cells. Many of these proteins have large ID domains and are found in neuronal inclusions in their respective diseases. Our study indicates that neurodegenerative disease-associated proteins are particularly vulnerable to recruitment into polyQ aggregates via their ID domains. Also, the high frequency of ID domains in RNA-binding proteins may explain why RNA-binding proteins are frequently found in pathological inclusions in various neurodegenerative diseases.
Collapse
Affiliation(s)
- Maggie P. Wear
- Department of Pharmacology, Uniformed Services University of the Heath Sciences, Bethesda, Maryland, 20814, United States of America
| | - Dmitry Kryndushkin
- Department of Pharmacology, Uniformed Services University of the Heath Sciences, Bethesda, Maryland, 20814, United States of America
| | - Robert O’Meally
- Johns Hopkins Mass Spectrometry and Proteomic Facility, Johns Hopkins University, Baltimore, Maryland, 21218, United States of America
| | - Jason L. Sonnenberg
- Chemistry department, School of Sciences, Stevenson University, Stevenson, Maryland, 21153, United States of America
| | - Robert N. Cole
- Johns Hopkins Mass Spectrometry and Proteomic Facility, Johns Hopkins University, Baltimore, Maryland, 21218, United States of America
| | - Frank P. Shewmaker
- Department of Pharmacology, Uniformed Services University of the Heath Sciences, Bethesda, Maryland, 20814, United States of America
- * E-mail:
| |
Collapse
|
24
|
Paez-Colasante X, Figueroa-Romero C, Sakowski SA, Goutman SA, Feldman EL. Amyotrophic lateral sclerosis: mechanisms and therapeutics in the epigenomic era. Nat Rev Neurol 2015; 11:266-79. [PMID: 25896087 DOI: 10.1038/nrneurol.2015.57] [Citation(s) in RCA: 157] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease of the motor neurons, which results in weakness and atrophy of voluntary skeletal muscles. Treatments do not modify the disease trajectory effectively, and only modestly improve survival. A complex interaction between genes, environmental exposure and impaired molecular pathways contributes to pathology in patients with ALS. Epigenetic mechanisms control the hereditary and reversible regulation of gene expression without altering the basic genetic code. Aberrant epigenetic patterns-including abnormal microRNA (miRNA) biogenesis and function, DNA modifications, histone remodeling, and RNA editing-are acquired throughout life and are influenced by environmental factors. Thus, understanding the molecular processes that lead to epigenetic dysregulation in patients with ALS might facilitate the discovery of novel therapeutic targets and biomarkers that could reduce diagnostic delay. These achievements could prove crucial for successful disease modification in patients with ALS. We review the latest findings regarding the role of miRNA modifications and other epigenetic mechanisms in ALS, and discuss their potential as therapeutic targets.
Collapse
Affiliation(s)
- Ximena Paez-Colasante
- Department of Neurology, University of Michigan, 1500 East Medical Centre Drive, 1914 Taubman Centre SPC 5316, Ann Arbor, MI 48109, USA
| | - Claudia Figueroa-Romero
- Department of Neurology, University of Michigan, 1500 East Medical Centre Drive, 1914 Taubman Centre SPC 5316, Ann Arbor, MI 48109, USA
| | - Stacey A Sakowski
- The A. Alfred Taubman Medical Research Institute, University of Michigan, 109 Zina Pitcher Place, 5017 A. Alfred Taubman Biomedical Science Research Building, Ann Arbor, MI 48109, USA
| | - Stephen A Goutman
- Department of Neurology, University of Michigan, 1500 East Medical Centre Drive, 1914 Taubman Centre SPC 5316, Ann Arbor, MI 48109, USA
| | - Eva L Feldman
- Department of Neurology, University of Michigan, 1500 East Medical Centre Drive, 1914 Taubman Centre SPC 5316, Ann Arbor, MI 48109, USA
| |
Collapse
|
25
|
Abeywardana T, Pratt MR. Extent of Inhibition of α-Synuclein Aggregation in Vitro by SUMOylation Is Conjugation Site- and SUMO Isoform-Selective. Biochemistry 2015; 54:959-61. [DOI: 10.1021/bi501512m] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Tharindumala Abeywardana
- Department
of Chemistry and ‡Department of Molecular and Computational Biology, University of Southern California, Los Angeles, California 90089-0744, United States
| | - Matthew R. Pratt
- Department
of Chemistry and ‡Department of Molecular and Computational Biology, University of Southern California, Los Angeles, California 90089-0744, United States
| |
Collapse
|
26
|
Feligioni M, Marcelli S, Knock E, Nadeem U, Arancio O, E. Fraser P. SUMO modulation of protein aggregation and degradation. AIMS MOLECULAR SCIENCE 2015. [DOI: 10.3934/molsci.2015.4.382] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
|