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Sohn SY, San TT, Kim J, Kim HJ. Bortezomib Is Toxic but Induces Neurogenesis and Inhibits TUBB3 Degradation in Rat Neural Stem Cells. Biomol Ther (Seoul) 2024; 32:65-76. [PMID: 38072501 PMCID: PMC10762278 DOI: 10.4062/biomolther.2023.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 10/17/2023] [Accepted: 10/25/2023] [Indexed: 12/28/2023] Open
Abstract
Bortezomib (BTZ) is a proteasome inhibitor used to treat multiple myeloma (MM). However, the induction of peripheral neuropathy is one of the major concerns in using BTZ to treat MM. In the current study, we have explored the effects of BTZ (0.01-5 nM) on rat neural stem cells (NSCs). BTZ (5 nM) induced cell death; however, the percentage of neurons was increased in the presence of mitogens. BTZ reduced the B-cell lymphoma 2 (Bcl-2)/Bcl-2 associated X protein ratio in proliferating NSCs and differentiated cells. Inhibition of βIII-tubulin (TUBB3) degradation was observed, but not inhibition of glial fibrillary acidic protein degradation, and a potential PEST sequence was solely found in TUBB3. In the presence of growth factors, BTZ increased cAMP response element-binding protein (CREB) phosphorylation, brain-derived neurotrophic factor (Bdnf) transcription, BDNF expression, and Tubb3 transcription in NSCs. However, in the neuroblastoma cell line, SH-SY5Y, BTZ (1-20 nM) only increased cell death without increasing CREB phosphorylation, Bdnf transcription, or TUBB3 induction. These results suggest that although BTZ induces cell death, it activates neurogenic signals and induces neurogenesis in NSCs.
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Affiliation(s)
- Seung Yeon Sohn
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Thin Thin San
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Junhyung Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hyun-Jung Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
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2
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Iravani MM, Shoaib M. Executive dysfunction and cognitive decline, a non-motor symptom of Parkinson's disease captured in animal models. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2023; 174:231-255. [PMID: 38341231 DOI: 10.1016/bs.irn.2023.12.001] [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: 02/12/2024]
Abstract
The non-motor symptoms of Parkinson's disease (PD) have gained increasing attention in recent years due to their significant impact on patients' quality of life. Among these non-motor symptoms, cognitive dysfunction has emerged as an area of particular interest where the clinical aspects are covered in Chapter 2 of this volume. This chapter explores the rationale for investigating the underlying neurobiology of cognitive dysfunction by utilising translational animal models of PD, from rodents to non-human primates. The objective of this chapter is to review the various animal models of cognition that have explored the dysfunction in animal models of Parkinson's disease. Some of the more advanced pharmacological studies aimed at restoring these cognitive deficits are reviewed, although this chapter highlights the lack of systematic approaches in dealing with this non-motor symptom at the pre-clinical stages.
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3
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Ribeiro FC, Cozachenco D, Heimfarth L, Fortuna JTS, de Freitas GB, de Sousa JM, Alves-Leon SV, Leite REP, Suemoto CK, Grinberg LT, De Felice FG, Lourenco MV, Ferreira ST. Synaptic proteasome is inhibited in Alzheimer's disease models and associates with memory impairment in mice. Commun Biol 2023; 6:1127. [PMID: 37935829 PMCID: PMC10630330 DOI: 10.1038/s42003-023-05511-9] [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: 02/02/2023] [Accepted: 10/26/2023] [Indexed: 11/09/2023] Open
Abstract
The proteasome plays key roles in synaptic plasticity and memory by regulating protein turnover, quality control, and elimination of oxidized/misfolded proteins. Here, we investigate proteasome function and localization at synapses in Alzheimer's disease (AD) post-mortem brain tissue and in experimental models. We found a marked increase in ubiquitinylated proteins in post-mortem AD hippocampi compared to controls. Using several experimental models, we show that amyloid-β oligomers (AβOs) inhibit synaptic proteasome activity and trigger a reduction in synaptic proteasome content. We further show proteasome inhibition specifically in hippocampal synaptic fractions derived from APPswePS1ΔE9 mice. Reduced synaptic proteasome activity instigated by AβOs is corrected by treatment with rolipram, a phosphodiesterase-4 inhibitor, in mice. Results further show that dynein inhibition blocks AβO-induced reduction in dendritic proteasome content in hippocampal neurons. Finally, proteasome inhibition induces AD-like pathological features, including reactive oxygen species and dendritic spine loss in hippocampal neurons, inhibition of hippocampal mRNA translation, and memory impairment in mice. Results suggest that proteasome inhibition may contribute to synaptic and memory deficits in AD.
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Affiliation(s)
- Felipe C Ribeiro
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Danielle Cozachenco
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Luana Heimfarth
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Juliana T S Fortuna
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Guilherme B de Freitas
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Centre for Neuroscience Studies, Department of Biomedical and Molecular Sciences and Department of Psychiatry, Queen's University, Kingston, ON, Canada
| | - Jorge M de Sousa
- Division of Neurosurgery, Clementino Chagas Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Soniza V Alves-Leon
- Division of Neurology, Clementino Chagas Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Translational Neuroscience Laboratory, Federal University of the State of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Renata E P Leite
- Department of Pathology, University of São Paulo Medical School, São Paulo, SP, Brazil
| | - Claudia K Suemoto
- Department of Pathology, University of São Paulo Medical School, São Paulo, SP, Brazil
| | - Lea T Grinberg
- Department of Pathology, University of São Paulo Medical School, São Paulo, SP, Brazil
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, CA, USA
| | - Fernanda G De Felice
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Centre for Neuroscience Studies, Department of Biomedical and Molecular Sciences and Department of Psychiatry, Queen's University, Kingston, ON, Canada
- D'Or Institute for Research and Education, Rio de Janeiro, RJ, Brazil
| | - Mychael V Lourenco
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Sergio T Ferreira
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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4
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Autophagy Function and Benefits of Autophagy Induction in Models of Spinocerebellar Ataxia Type 3. Cells 2023; 12:cells12060893. [PMID: 36980234 PMCID: PMC10047838 DOI: 10.3390/cells12060893] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/20/2023] [Accepted: 03/07/2023] [Indexed: 03/17/2023] Open
Abstract
Background: Spinocerebellar ataxia 3 (SCA3, also known as Machado Joseph disease) is a fatal neurodegenerative disease caused by the expansion of the trinucleotide repeat region within the ATXN3/MJD gene. The presence of this genetic expansion results in an ataxin-3 protein containing a polyglutamine repeat region, which renders the ataxin-3 protein aggregation prone. Formation of ataxin-3 protein aggregates is linked with neuronal loss and, therefore, the development of motor deficits. Methods: Here, we investigated whether the autophagy protein quality control pathway, which is important in the process of protein aggregate removal, is impaired in a cell culture and zebrafish model of SCA3. Results: We found that SH-SY5Y cells expressing human ataxin-3 containing polyglutamine expansion exhibited aberrant levels of autophagy substrates, including increased p62 and decreased LC3II (following bafilomycin treatment), compared to the controls. Similarly, transgenic SCA3 zebrafish showed signs of autophagy impairment at early disease stages (larval), as well as p62 accumulation at advanced age stages (18 months old). We then examined whether treating with compounds known to induce autophagy activity, would aid removal of human ataxin-3 84Q and improve the swimming of the SCA3 zebrafish larvae. We found that treatment with loperamide, trehalose, rapamycin, and MG132 each improved the swimming of the SCA3 zebrafish compared to the vehicle-treated controls. Conclusion: We propose that signs of autophagy impairment occur in the SH-SY5Y model of SCA3 and SCA3 zebrafish at larval and advanced age stages. Treatment of the larval SCA3 zebrafish with various compounds with autophagy induction capacity was able to produce the improved swimming of the zebrafish, suggesting the potential benefit of autophagy-inducing compounds for the treatment of SCA3.
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Bisphenol-A (BPA) Impairs Hippocampal Neurogenesis via Inhibiting Regulation of the Ubiquitin Proteasomal System. Mol Neurobiol 2023; 60:3277-3298. [PMID: 36828952 DOI: 10.1007/s12035-023-03249-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 01/24/2023] [Indexed: 02/26/2023]
Abstract
The ubiquitin-proteasome system (UPS) controls protein homeostasis to maintain cell functionality and survival. Neurogenesis relies on proteasome function, and a defective proteasome system during brain development leads to neurological disorders. An endocrine-disrupting xenoestrogen bisphenol-A (BPA) used in plastic products adversely affects human health and causes neurotoxicity. Previously, we reported that BPA reduces neural stem cells (NSCs) proliferation and differentiation, impairs myelination and mitochondrial protein import, and causes excessive mitochondrial fragmentation leading to cognitive impairments in rats. Herein, we examined the effect(s) of prenatal BPA exposure on UPS functions during NSCs proliferation and differentiation in the hippocampus. Rats were orally treated with 40 µg/kg body weight BPA during day 6 gestation to day 21 postnatal. BPA significantly reduced proteasome activity in a cellular extract of NSCs. Immunocytochemistry exhibited a significant reduction of 20S proteasome/Nestin+ and PSMB5/Nestin+ cells in NSCs culture. BPA decreased 20S/Tuj1+ and PSMB5/Tuj1+ cells, indicating disrupted UPS during neuronal differentiation. BPA reduced the expression of UPS genes, 20S, and PSMB5 protein levels and proteasome activity in the hippocampus. It significantly reduced overall protein synthesis by the loss of Nissl substances in the hippocampus. Pharmacological activation of UPS by a bioactive triterpenoid 18α-glycyrrhetinic acid (18α GA) caused increased proteasome activities, significantly increased neurosphere size and number, and enhanced NSCs proliferation in BPA exposed culture, while proteasome inhibition by MG132 further aggravates BPA-mediated effects. In silico studies demonstrated that BPA strongly binds to catalytic sites of UPS genes (PSMB5, TRIM11, Parkin, and PSMD4) which may result in UPS inactivation. These results suggest that BPA significantly reduces NSCs proliferation by impairing UPS, and UPS activation by 18α GA could suppress BPA-mediated neurotoxicity and exerts neuroprotection.
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6
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Huang L, Zhang Z. CSPα in neurodegenerative diseases. Front Aging Neurosci 2022; 14:1043384. [DOI: 10.3389/fnagi.2022.1043384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 10/17/2022] [Indexed: 11/19/2022] Open
Abstract
Adult-onset neuronal ceroid lipofuscinosis (ANCL) is a rare neurodegenerative disease characterized by epilepsy, cognitive degeneration, and motor disorders caused by mutations in the DNAJC5 gene. In addition to being associated with ANCL disease, the cysteine string proteins α (CSPα) encoded by the DNAJC5 gene have been implicated in several neurodegenerative diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), and Huntington's disease. However, the pathogenic mechanism responsible for these neurodegenerative diseases has not yet been elucidated. Therefore, this study examines the functional properties of the CSPα protein and the related mechanisms of neurodegenerative diseases.
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7
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Ayeni EA, Aldossary AM, Ayejoto DA, Gbadegesin LA, Alshehri AA, Alfassam HA, Afewerky HK, Almughem FA, Bello SM, Tawfik EA. Neurodegenerative Diseases: Implications of Environmental and Climatic Influences on Neurotransmitters and Neuronal Hormones Activities. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph191912495. [PMID: 36231792 PMCID: PMC9564880 DOI: 10.3390/ijerph191912495] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/21/2022] [Accepted: 09/24/2022] [Indexed: 05/23/2023]
Abstract
Neurodegenerative and neuronal-related diseases are major public health concerns. Human vulnerability to neurodegenerative diseases (NDDs) increases with age. Neuronal hormones and neurotransmitters are major determinant factors regulating brain structure and functions. The implications of environmental and climatic changes emerged recently as influence factors on numerous diseases. However, the complex interaction of neurotransmitters and neuronal hormones and their depletion under environmental and climatic influences on NDDs are not well established in the literature. In this review, we aim to explore the connection between the environmental and climatic factors to NDDs and to highlight the available and potential therapeutic interventions that could use to improve the quality of life and reduce susceptibility to NDDs.
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Affiliation(s)
- Emmanuel A. Ayeni
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ahmad M. Aldossary
- National Center of Biotechnology, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 12354, Saudi Arabia
| | - Daniel A. Ayejoto
- Department of Industrial Chemistry, University of Ilorin, Ilorin 240003, Nigeria
| | - Lanre A. Gbadegesin
- University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
| | - Abdullah A. Alshehri
- National Center of Biotechnology, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 12354, Saudi Arabia
| | - Haya A. Alfassam
- KACST-BWH Center of Excellence for Biomedicine, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology (KACST), Riyadh 12354, Saudi Arabia
| | - Henok K. Afewerky
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430074, China
- School of Allied Health Professions, Asmara College of Health Sciences, Asmara P.O. Box 1220, Eritrea
| | - Fahad A. Almughem
- National Center of Biotechnology, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 12354, Saudi Arabia
| | - Saidu M. Bello
- Institute of Pharmacognosy, University of Szeged, 6720 Szeged, Hungary
| | - Essam A. Tawfik
- National Center of Biotechnology, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 12354, Saudi Arabia
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8
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Chocron ES, Munkácsy E, Kim HS, Karpowicz P, Jiang N, Van Skike CE, DeRosa N, Banh AQ, Palavicini JP, Wityk P, Kalinowski L, Galvan V, Osmulski PA, Jankowska E, Gaczynska M, Pickering AM. Genetic and pharmacologic proteasome augmentation ameliorates Alzheimer's-like pathology in mouse and fly APP overexpression models. SCIENCE ADVANCES 2022; 8:eabk2252. [PMID: 35675410 PMCID: PMC9177073 DOI: 10.1126/sciadv.abk2252] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 04/21/2022] [Indexed: 05/27/2023]
Abstract
The proteasome has key roles in neuronal proteostasis, including the removal of misfolded and oxidized proteins, presynaptic protein turnover, and synaptic efficacy and plasticity. Proteasome dysfunction is a prominent feature of Alzheimer's disease (AD). We show that prevention of proteasome dysfunction by genetic manipulation delays mortality, cell death, and cognitive deficits in fly and cell culture AD models. We developed a transgenic mouse with neuronal-specific proteasome overexpression that, when crossed with an AD mouse model, showed reduced mortality and cognitive deficits. To establish translational relevance, we developed a set of TAT-based proteasome-activating peptidomimetics that stably penetrated the blood-brain barrier and enhanced 20S/26S proteasome activity. These agonists protected against cell death, cognitive decline, and mortality in cell culture, fly, and mouse AD models. The protective effects of proteasome overexpression appear to be driven, at least in part, by the proteasome's increased turnover of the amyloid precursor protein along with the prevention of overall proteostatic dysfunction.
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Affiliation(s)
- E. Sandra Chocron
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
| | - Erin Munkácsy
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
| | - Harper S. Kim
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
- Department of Molecular Medicine, UT Health San Antonio, San Antonio, TX, USA
- Center for Neurodegeneration and Experimental Therapeutics (CNET), Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, USA
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Przemyslaw Karpowicz
- Department of Organic Chemistry, Faculty of Chemistry, University of Gdańsk, Gdańsk, Poland
| | - Nisi Jiang
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
- Department of Molecular Medicine, UT Health San Antonio, San Antonio, TX, USA
| | - Candice E. Van Skike
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
- Department of Cellular and Integrative Physiology, UT Health San Antonio, San Antonio, TX, USA
| | - Nicholas DeRosa
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
- Department of Cellular and Integrative Physiology, UT Health San Antonio, San Antonio, TX, USA
| | - Andy Q. Banh
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
- Department of Cellular and Integrative Physiology, UT Health San Antonio, San Antonio, TX, USA
| | - Juan P. Palavicini
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
| | - Paweł Wityk
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Gdańsk, Poland
- Department of Medical Laboratory Diagnostics–Fahrenheit Biobank BBMRI.pl, Medical University of Gdańsk, Gdańsk, Poland
- BioTechMed Centre/Department of Mechanics of Materials and Structures, Gdańsk University of Technology, Gdańsk, Poland
| | - Leszek Kalinowski
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Gdańsk, Poland
- Department of Medical Laboratory Diagnostics–Fahrenheit Biobank BBMRI.pl, Medical University of Gdańsk, Gdańsk, Poland
- BioTechMed Centre/Department of Mechanics of Materials and Structures, Gdańsk University of Technology, Gdańsk, Poland
| | - Veronica Galvan
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
- College of Medicine, Oklahoma Health Science Center, Oklahoma City, OK, USA
- Department of Biochemistry, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- South Texas VA Health Care System, San Antonio, TX, USA
- Oklahoma City VA Health Care System, Oklahoma City, OK, USA
| | - Pawel A. Osmulski
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
- Department of Molecular Medicine, UT Health San Antonio, San Antonio, TX, USA
| | - Elzbieta Jankowska
- Department of Organic Chemistry, Faculty of Chemistry, University of Gdańsk, Gdańsk, Poland
| | - Maria Gaczynska
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
- Department of Molecular Medicine, UT Health San Antonio, San Antonio, TX, USA
| | - Andrew M. Pickering
- Barshop Institute for Longevity and Aging Studies, UT Health San Antonio, San Antonio, TX, USA
- Department of Molecular Medicine, UT Health San Antonio, San Antonio, TX, USA
- Center for Neurodegeneration and Experimental Therapeutics (CNET), Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, USA
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9
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Ostrowski RP, Pucko E, Matyja E. Proteasome and Neuroprotective Effect of Hyperbaric Oxygen Preconditioning in Experimental Global Cerebral Ischemia in Rats. Front Neurol 2022; 13:812581. [PMID: 35250819 PMCID: PMC8891759 DOI: 10.3389/fneur.2022.812581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/11/2022] [Indexed: 11/27/2022] Open
Abstract
Objectives We investigated the involvement of the proteasome in the mechanism of preconditioning with hyperbaric oxygen (HBO-PC). Methods The experiments were performed on male Wistar rats subjected to a transient global cerebral ischemia of 5 min duration (2-vessel occlusion model) and preconditioned or not with HBO for 5 preceding days (1 h HBO at 2.5 atmosphere absolute [ATA] daily). In subgroups of preconditioned rats, the proteasome inhibitor MG132 was administered 30 min prior to each preconditioning session. Twenty-four hours and 7 days post-ischemia, after neurobehavioral assessment, the brains were collected and evaluated for morphological changes and quantitative immunohistochemistry of cell markers and apoptosis-related proteins. Results We observed reduced damage of CA1 pyramidal cells in the HBO preconditioned group only at 7 days post-ischemia. However, both at early (24 h) and later (7 days) time points, HBO-PC enhanced the tissue expression of 20S core particle of the proteasome and of the nestin, diminished astroglial reactivity, and reduced p53, rabbit anti-p53 upregulated modulator of apoptosis (PUMA), and rabbit anti-B cell lymphoma-2 interacting mediator of cell death (Bim) expressions in the hippocampus and cerebral cortex. HBO-PC also improved T-maze performance at 7 days. Proteasome inhibitor abolished the beneficial effects of HBO-PC on post-ischemic neuronal injury and functional impairment and reduced the ischemic alterations in the expression of investigated proteins. Significance Preconditioning with hyperbaric oxygen-induced brain protection against severe ischemic brain insult appears to involve the proteasome, which can be linked to a depletion of apoptotic proteins and improved regenerative potential.
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10
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Joza S, Postuma RB. Teaching an Old Drug a New Trick for Dystonia. Mov Disord 2021; 37:37. [PMID: 34816479 DOI: 10.1002/mds.28876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/03/2021] [Accepted: 11/08/2021] [Indexed: 11/07/2022] Open
Affiliation(s)
- Stephen Joza
- Department of Neurology, McGill University, Montreal General Hospital, Montreal, Quebec, Canada
| | - Ronald B Postuma
- Department of Neurology, McGill University, Montreal General Hospital, Montreal, Quebec, Canada
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11
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Nesari A, Mansouri MT, Khodayar MJ, Rezaei M. Preadministration of high-dose alpha-tocopherol improved memory impairment and mitochondrial dysfunction induced by proteasome inhibition in rat hippocampus. Nutr Neurosci 2021; 24:119-129. [PMID: 31084475 DOI: 10.1080/1028415x.2019.1601888] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Objective: The ubiquitin-proteasome system plays a key role in memory consolidation. Proteasome inhibition and free radical-induced neural damage were implicated in neurodegenerative states. In this study, it was tested whether alpha-tocopherol (αT) in low and high doses could improve the long-term memory impairment induced by proteasome inhibition and protects against hippocampal oxidative stress. Methods: Alpha-tocopherol (αT) (60, 200 mg/kg, i.p. for 5 days) was administered to rats with memory deficit and hippocampal oxidative stress induced by bilateral intra-hippocampal injection of lactacystin (32 ng/μl) and mitochondrial evaluations were performed for improvement assessments. Results: The results showed that lactacystin significantly reduced the passive avoidance memory performance and increased the level of malondialdehyde (MDA), reactive oxygen species (ROS) and diminished the mitochondrial membrane potential (MMP) in the rat hippocampus. Furthermore, Intraperitoneal administration of αT significantly increased the passive avoidance memory, glutathione content and reduced ROS, MDA levels and impaired MMP. Conclusions: The results suggested that αT has neuroprotective effects against lactacystin-induced oxidative stress and memory impairment via the enhancement of hippocampal antioxidant capacity and concomitant mitochondrial sustainability. This finding shows a way to prevent and also to treat neurodegenerative diseases associated with mitochondrial impairment.
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Affiliation(s)
- Ali Nesari
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Taghi Mansouri
- Department of Pharmacology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Anesthesiology, Irving Medical Center, Columbia University, New York, NY, USA
| | - Mohammad Javad Khodayar
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohsen Rezaei
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Toxicology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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12
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Krishna-K K, Baby N, Raghuraman R, Navakkode S, Behnisch T, Sajikumar S. Regulation of aberrant proteasome activity re-establishes plasticity and long-term memory in an animal model of Alzheimer's disease. FASEB J 2020; 34:9466-9479. [PMID: 32459037 DOI: 10.1096/fj.201902844rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 04/17/2020] [Accepted: 05/05/2020] [Indexed: 11/11/2022]
Abstract
Reduced retrograde memory performance at the cognitive level and aggregation/deposition of amyloid beta (Aβ) in the brain at the cellular level are some of the hallmarks of Alzheimer's Disease (AD). A molecular system that participates in the removal of proteins with an altered conformation is the Ubiquitin-Proteasome System (UPS). Impairments of the UPS in wild-type (WT) mice lead to defective clearance of Aβ and prevent long-term plasticity of synaptic transmission. Here we show data whereby in contrast to WT mice, the inhibition of proteasome-mediated protein degradation in an animal model of AD by MG132 or lactacystin restores impaired activity-dependent synaptic plasticity and its associative interaction, synaptic tagging and capture (STC) in vitro, as well as associative long-term memory in vivo. This augmentation of synaptic plasticity and memory is mediated by the mTOR pathway and protein synthesis. Our data offer novel insights into the rebalancing of proteins relevant for synaptic plasticity which are regulated by UPS in AD-like animal models. In addition, the data provide evidence that proteasome inhibitors might be effective in reinstating synaptic plasticity and memory performance in AD, and therefore offer a new potential therapeutic option for AD treatment.
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Affiliation(s)
- Kumar Krishna-K
- Department of Physiology, National University of Singapore, Singapore, Singapore.,Life Sciences Institute Neurobiology Programme, National University of Singapore, Singapore, Singapore
| | - Nimmi Baby
- Department of Physiology, National University of Singapore, Singapore, Singapore.,Life Sciences Institute Neurobiology Programme, National University of Singapore, Singapore, Singapore
| | - Radha Raghuraman
- Department of Physiology, National University of Singapore, Singapore, Singapore.,Life Sciences Institute Neurobiology Programme, National University of Singapore, Singapore, Singapore
| | - Sheeja Navakkode
- Department of Physiology, National University of Singapore, Singapore, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Thomas Behnisch
- Institutes of Brain Science, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| | - Sreedharan Sajikumar
- Department of Physiology, National University of Singapore, Singapore, Singapore.,Life Sciences Institute Neurobiology Programme, National University of Singapore, Singapore, Singapore
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13
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López-Escobar B, Fernández-Torres R, Vargas-López V, Villar-Navarro M, Rybkina T, Rivas-Infante E, Hernández-Viñas A, Álvarez Del Vayo C, Caro-Vega J, Sánchez-Alcázar JA, González-Meneses A, Carrión MÁ, Ybot-González P. Lacosamide intake during pregnancy increases the incidence of foetal malformations and symptoms associated with schizophrenia in the offspring of mice. Sci Rep 2020; 10:7615. [PMID: 32376856 PMCID: PMC7203245 DOI: 10.1038/s41598-020-64626-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 04/08/2020] [Indexed: 01/01/2023] Open
Abstract
The use of first and second generation antiepileptic drugs during pregnancy doubles the risk of major congenital malformations and other teratogenic defects. Lacosamide (LCM) is a third-generation antiepileptic drug that interacts with collapsing response mediator protein 2, a protein that has been associated with neurodevelopmental diseases like schizophrenia. The aim of this study was to test the potential teratogenic effects of LCM on developing embryos and its effects on behavioural/histological alterations in adult mice. We administered LCM to pregnant mice, assessing its presence, and that of related compounds, in the mothers’ serum and in embryonic tissues using liquid chromatography coupled to quadrupole/time of flight mass spectrometry detection. Embryo morphology was evaluated, and immunohistochemistry was performed on adult offspring. Behavioural studies were carried out during the first two postnatal weeks and on adult mice. We found a high incidence of embryonic lethality and malformations in mice exposed to LCM during embryonic development. Neonatal mice born to dams treated with LCM during gestation displayed clear psychomotor delay and behavioural and morphological alterations in the prefrontal cortex, hippocampus and amygdala that were associated with behaviours associated with schizophrenia spectrum disorders in adulthood. We conclude that LCM and its metabolites may have teratogenic effects on the developing embryos, reflected in embryonic lethality and malformations, as well as behavioural and histological alterations in adult mice that resemble those presented by patients with schizophrenia.
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Affiliation(s)
- Beatriz López-Escobar
- Grupo de Neurodesarrollo, Hospital Universitario Virgen del Rocio/Instituto de Biomedicina de Sevilla (IBIS)/CSIC/Universidad de Sevilla, Sevilla, 41013, Spain
| | - Rut Fernández-Torres
- Departamento de Química Analítica, Facultad Química, Universidad Sevilla, Sevilla, Spain.,Centro de Investigación en Salud y Medio Ambiente (CYSMA), Universidad de Huelva, Huelva, Spain
| | - Viviana Vargas-López
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, 41013, Sevilla, Spain.,Behavioral Neurophysiology Laboratory, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | | | - Tatyana Rybkina
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, 41013, Sevilla, Spain
| | - Eloy Rivas-Infante
- Unidad de Gestión Clínica de Anatomía Patología, Hospital Universitario Virgen del Rocío, Sevilla, Spain
| | - Ayleen Hernández-Viñas
- Grupo de Neurodesarrollo, Hospital Universitario Virgen del Rocio/Instituto de Biomedicina de Sevilla (IBIS)/CSIC/Universidad de Sevilla, Sevilla, 41013, Spain
| | - Concepción Álvarez Del Vayo
- Unidad de Gestión Clínica de Farmacia, Hospital Universitario Virgen del Rocío and Universidad de Sevilla, Sevilla, Spain
| | - José Caro-Vega
- Grupo de Neurodesarrollo, Hospital Universitario Virgen del Rocio/Instituto de Biomedicina de Sevilla (IBIS)/CSIC/Universidad de Sevilla, Sevilla, 41013, Spain
| | - José A Sánchez-Alcázar
- Centro Andaluz de Biología del Desarrollo (CABD), and Centro de Investigación Biomédica en Red: Enfermedades Raras, Instituto de Salud Carlos III, CSIC, Universidad Pablo de Olavide, 41013, Sevilla, Spain
| | - Antonio González-Meneses
- Unidad de Gestión Clínica de Pediatría, Hospital Universitario Virgen del Rocío and Universidad de Sevilla, Sevilla, Spain
| | - M Ángel Carrión
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, 41013, Sevilla, Spain.
| | - Patricia Ybot-González
- Grupo de Neurodesarrollo, Hospital Universitario Virgen del Rocio/Instituto de Biomedicina de Sevilla (IBIS)/CSIC/Universidad de Sevilla, Sevilla, 41013, Spain. .,Unidad de Gestión Clínica de Neurología y Neurofisiología, Hospital Universitario Virgen Macarena, Sevilla, 41009, Spain.
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14
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Abstract
In seeking to understand mental health and disease, it is fundamental to identify the biological substrates that draw together the experiences and physiological processes that underlie observed psychological changes. Mitochondria are subcellular organelles best known for their central role in energetics, producing adenosine triphosphate to power most cellular processes. Converging lines of evidence indicate that mitochondria play a key role in the biological embedding of adversity. Preclinical research documents the effects of stress exposure on mitochondrial structure and function, and recent human research suggests alterations constituting recalibrations, both adaptive and nonadaptive. Current research suggests dynamic relationships among stress exposure, neuroendocrine signaling, inflammation, and mitochondrial function. These complex relationships are implicated in disease risk, and their elucidation may inform prevention and treatment of stress- and trauma-related disorders. We review and evaluate the evidence for mitochondrial dysfunction as a consequence of stress exposure and as a contributing factor to psychiatric disease.
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Affiliation(s)
- Teresa E Daniels
- Mood Disorders Research Program and Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Providence, Rhode Island 02906, USA; , , .,Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, Rhode Island 02912, USA
| | - Elizabeth M Olsen
- Mood Disorders Research Program and Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Providence, Rhode Island 02906, USA; , , .,Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, Rhode Island 02912, USA
| | - Audrey R Tyrka
- Mood Disorders Research Program and Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Providence, Rhode Island 02906, USA; , , .,Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, Rhode Island 02912, USA
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15
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Kim JH, Kim A, Yun Y, Park S, Lee JH, Lee YS, Lee MJ. Reduced chronic restraint stress in mice overexpressing hyperactive proteasomes in the forebrain. Mol Brain 2020; 13:4. [PMID: 31931843 PMCID: PMC6958796 DOI: 10.1186/s13041-020-0548-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 01/05/2020] [Indexed: 11/27/2022] Open
Abstract
While chronic restraint stress (CRS) results in depression-like behaviors possibly through oxidative stress in the brain, its molecular etiology and the development of therapeutic strategies remain elusive. Since oxidized proteins can be targeted by the ubiquitin-proteasome system, we investigated whether increased proteasome activity might affect the stress response in mice. Transgenic mice, expressing the N-terminally deleted version of α3 subunit (α3ΔN) of the proteasome, which has been shown to generate open-gated mutant proteasomes, in the forebrain were viable and fertile, but showed higher proteasome activity. After being challenged with CRS for 14 d, the mutant mice with hyperactive proteasomes showed significantly less immobility time in the forced swimming test compared with their wild-type littermates, suggesting that the α3ΔN transgenic mice are resistant to CRS. The accumulation of ER stress markers, such as polyubiquitin conjugates and phospho-IRE1α, was also significantly delayed in the hippocampus of the mutants. Notably, α3ΔN mice exhibited little deficits in other behavioral tasks, suggesting that stress resilience is likely due to the degradation of misfolded proteins by the open-gated proteasomes. These data strongly indicate that not only is the proteasome a critical modulator of stress response in vivo but also a possible therapeutic target for reducing chronic stress.
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Affiliation(s)
- Ji Hyeon Kim
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, 03080, Korea.,Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Ahbin Kim
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, 03080, Korea.,Department of Physiology, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Yejin Yun
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, 03080, Korea.,Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Seoyoung Park
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, 03080, Korea.,Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Jung Hoon Lee
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, 03080, Korea.,Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Yong-Seok Lee
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, 03080, Korea. .,Department of Physiology, Seoul National University College of Medicine, Seoul, 03080, Korea. .,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, 03080, Korea.
| | - Min Jae Lee
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, 03080, Korea. .,Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Korea. .,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, 03080, Korea.
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16
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Munkácsy E, Chocron ES, Quintanilla L, Gendron CM, Pletcher SD, Pickering AM. Neuronal-specific proteasome augmentation via Prosβ5 overexpression extends lifespan and reduces age-related cognitive decline. Aging Cell 2019; 18:e13005. [PMID: 31334599 PMCID: PMC6718538 DOI: 10.1111/acel.13005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/25/2019] [Accepted: 06/29/2019] [Indexed: 01/02/2023] Open
Abstract
Cognitive function declines with age throughout the animal kingdom, and increasing evidence shows that disruption of the proteasome system contributes to this deterioration. The proteasome has important roles in multiple aspects of the nervous system, including synapse function and plasticity, as well as preventing cell death and senescence. Previous studies have shown neuronal proteasome depletion and inhibition can result in neurodegeneration and cognitive deficits, but it is unclear if this pathway is a driver of neurodegeneration and cognitive decline in aging. We report that overexpression of the proteasome β5 subunit enhances proteasome assembly and function. Significantly, we go on to show that neuronal‐specific proteasome augmentation slows age‐related declines in measures of learning, memory, and circadian rhythmicity. Surprisingly, neuronal‐specific augmentation of proteasome function also produces a robust increase of lifespan in Drosophila melanogaster. Our findings appear specific to the nervous system; ubiquitous proteasome overexpression increases oxidative stress resistance but does not impact lifespan and is detrimental to some healthspan measures. These findings demonstrate a key role of the proteasome system in brain aging.
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Affiliation(s)
- Erin Munkácsy
- The Sam and Ann Barshop institute for Longevity and Aging Studies UT Health San Antonio San Antonio Texas
- Department of Molecular Medicine UT Health San Antonio San Antonio Texas
| | - E. Sandra Chocron
- The Sam and Ann Barshop institute for Longevity and Aging Studies UT Health San Antonio San Antonio Texas
- Department of Molecular Medicine UT Health San Antonio San Antonio Texas
| | - Laura Quintanilla
- The Sam and Ann Barshop institute for Longevity and Aging Studies UT Health San Antonio San Antonio Texas
- Department of Molecular Medicine UT Health San Antonio San Antonio Texas
| | - Christi M. Gendron
- Department of Molecular and Integrative Physiology and the Geriatrics Center University of Michigan Ann Arbor Michigan
| | - Scott D. Pletcher
- Department of Molecular and Integrative Physiology and the Geriatrics Center University of Michigan Ann Arbor Michigan
| | - Andrew M. Pickering
- The Sam and Ann Barshop institute for Longevity and Aging Studies UT Health San Antonio San Antonio Texas
- Department of Molecular Medicine UT Health San Antonio San Antonio Texas
- The Glenn Biggs Institute for Alzheimer's & Neurodegenerative Diseases UT Health San Antonio San Antonio Texas
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17
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The effects of proteasome on baseline and methamphetamine-dependent dopamine transmission. Neurosci Biobehav Rev 2019; 102:308-317. [DOI: 10.1016/j.neubiorev.2019.05.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 04/29/2019] [Accepted: 05/09/2019] [Indexed: 12/16/2022]
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18
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Cell Clearing Systems Bridging Neuro-Immunity and Synaptic Plasticity. Int J Mol Sci 2019; 20:ijms20092197. [PMID: 31060234 PMCID: PMC6538995 DOI: 10.3390/ijms20092197] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 04/29/2019] [Accepted: 04/30/2019] [Indexed: 02/06/2023] Open
Abstract
In recent years, functional interconnections emerged between synaptic transmission, inflammatory/immune mediators, and central nervous system (CNS) (patho)-physiology. Such interconnections rose up to a level that involves synaptic plasticity, both concerning its molecular mechanisms and the clinical outcomes related to its behavioral abnormalities. Within this context, synaptic plasticity, apart from being modulated by classic CNS molecules, is strongly affected by the immune system, and vice versa. This is not surprising, given the common molecular pathways that operate at the cross-road between the CNS and immune system. When searching for a common pathway bridging neuro-immune and synaptic dysregulations, the two major cell-clearing cell clearing systems, namely the ubiquitin proteasome system (UPS) and autophagy, take center stage. In fact, just like is happening for the turnover of key proteins involved in neurotransmitter release, antigen processing within both peripheral and CNS-resident antigen presenting cells is carried out by UPS and autophagy. Recent evidence unravelling the functional cross-talk between the cell-clearing pathways challenged the traditional concept of autophagy and UPS as independent systems. In fact, autophagy and UPS are simultaneously affected in a variety of CNS disorders where synaptic and inflammatory/immune alterations concur. In this review, we discuss the role of autophagy and UPS in bridging synaptic plasticity with neuro-immunity, while posing a special emphasis on their interactions, which may be key to defining the role of immunity in synaptic plasticity in health and disease.
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19
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Castillo-Morales A, Monzón-Sandoval J, Urrutia AO, Gutiérrez H. Postmitotic cell longevity-associated genes: a transcriptional signature of postmitotic maintenance in neural tissues. Neurobiol Aging 2018; 74:147-160. [PMID: 30448614 DOI: 10.1016/j.neurobiolaging.2018.10.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 10/03/2018] [Accepted: 10/11/2018] [Indexed: 12/24/2022]
Abstract
Different cell types have different postmitotic maintenance requirements. Nerve cells, however, are unique in this respect as they need to survive and preserve their functional complexity for the entire lifetime of the organism, and failure at any level of their supporting mechanisms leads to a wide range of neurodegenerative conditions. Whether these differences across tissues arise from the activation of distinct cell type-specific maintenance mechanisms or the differential activation of a common molecular repertoire is not known. To identify the transcriptional signature of postmitotic cellular longevity (PMCL), we compared whole-genome transcriptome data from human tissues ranging in longevity from 120 days to over 70 years and found a set of 81 genes whose expression levels are closely associated with increased cell longevity. Using expression data from 10 independent sources, we found that these genes are more highly coexpressed in longer-living tissues and are enriched in specific biological processes and transcription factor targets compared with randomly selected gene samples. Crucially, we found that PMCL-associated genes are downregulated in the cerebral cortex and substantia nigra of patients with Alzheimer's and Parkinson's disease, respectively, as well as Hutchinson-Gilford progeria-derived fibroblasts, and that this downregulation is specifically linked to their underlying association with cellular longevity. Moreover, we found that sexually dimorphic brain expression of PMCL-associated genes reflects sexual differences in lifespan in humans and macaques. Taken together, our results suggest that PMCL-associated genes are part of a generalized machinery of postmitotic maintenance and functional stability in both neural and non-neural cells and support the notion of a common molecular repertoire differentially engaged in different cell types with different survival requirements.
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Affiliation(s)
- Atahualpa Castillo-Morales
- School of Life Sciences, University of Lincoln, Lincoln, UK; Milner Centre for Evolution, Department of Biology and Biochemistry, University of Bath, Bath, UK
| | - Jimena Monzón-Sandoval
- School of Life Sciences, University of Lincoln, Lincoln, UK; Milner Centre for Evolution, Department of Biology and Biochemistry, University of Bath, Bath, UK
| | - Araxi O Urrutia
- Milner Centre for Evolution, Department of Biology and Biochemistry, University of Bath, Bath, UK; Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.
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20
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Cubillos-Rojas M, Schneider T, Hadjebi O, Pedrazza L, de Oliveira JR, Langa F, Guénet JL, Duran J, de Anta JM, Alcántara S, Ruiz R, Pérez-Villegas EM, Aguilar-Montilla FJ, Carrión ÁM, Armengol JA, Baple E, Crosby AH, Bartrons R, Ventura F, Rosa JL. The HERC2 ubiquitin ligase is essential for embryonic development and regulates motor coordination. Oncotarget 2018; 7:56083-56106. [PMID: 27528230 PMCID: PMC5302898 DOI: 10.18632/oncotarget.11270] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 08/01/2016] [Indexed: 01/22/2023] Open
Abstract
A mutation in the HERC2 gene has been linked to a severe neurodevelopmental disorder with similarities to the Angelman syndrome. This gene codifies a protein with ubiquitin ligase activity that regulates the activity of tumor protein p53 and is involved in important cellular processes such as DNA repair, cell cycle, cancer, and iron metabolism. Despite the critical role of HERC2 in these physiological and pathological processes, little is known about its relevance in vivo. Here, we described a mouse with targeted inactivation of the Herc2 gene. Homozygous mice were not viable. Distinct from other ubiquitin ligases that interact with p53, such as MDM2 or MDM4, p53 depletion did not rescue the lethality of homozygous mice. The HERC2 protein levels were reduced by approximately one-half in heterozygous mice. Consequently, HERC2 activities, including ubiquitin ligase and stimulation of p53 activity, were lower in heterozygous mice. A decrease in HERC2 activities was also observed in human skin fibroblasts from individuals with an Angelman-like syndrome that express an unstable mutant protein of HERC2. Behavioural analysis of heterozygous mice identified an impaired motor synchronization with normal neuromuscular function. This effect was not observed in p53 knockout mice, indicating that a mechanism independent of p53 activity is involved. Morphological analysis showed the presence of HERC2 in Purkinje cells and a specific loss of these neurons in the cerebella of heterozygous mice. In these animals, an increase of autophagosomes and lysosomes was observed. Our findings establish a crucial role of HERC2 in embryonic development and motor coordination.
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Affiliation(s)
- Monica Cubillos-Rojas
- Departament de Ciències Fisiològiques, IDIBELL, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Taiane Schneider
- Departament de Ciències Fisiològiques, IDIBELL, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Ouadah Hadjebi
- Departament de Ciències Fisiològiques, IDIBELL, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Leonardo Pedrazza
- Departament de Ciències Fisiològiques, IDIBELL, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain.,Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Jarbas Rodrigues de Oliveira
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Francina Langa
- Département de Biologie du Développement, Institut Pasteur, Paris, France
| | - Jean-Louis Guénet
- Département de Biologie du Développement, Institut Pasteur, Paris, France
| | - Joan Duran
- Departament de Patologia i Terapèutica Experimental, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Josep Maria de Anta
- Departament de Patologia i Terapèutica Experimental, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Soledad Alcántara
- Departament de Patologia i Terapèutica Experimental, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Rocio Ruiz
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain.,Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, Sevilla, Spain
| | - Eva María Pérez-Villegas
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, Sevilla, Spain
| | | | - Ángel M Carrión
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, Sevilla, Spain
| | - Jose Angel Armengol
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, Sevilla, Spain
| | - Emma Baple
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Exeter, UK
| | - Andrew H Crosby
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Exeter, UK
| | - Ramon Bartrons
- Departament de Ciències Fisiològiques, IDIBELL, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Francesc Ventura
- Departament de Ciències Fisiològiques, IDIBELL, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Jose Luis Rosa
- Departament de Ciències Fisiològiques, IDIBELL, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
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21
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Sunkaria A, Bhardwaj S, Yadav A, Halder A, Sandhir R. Sulforaphane attenuates postnatal proteasome inhibition and improves spatial learning in adult mice. J Nutr Biochem 2018; 51:69-79. [DOI: 10.1016/j.jnutbio.2017.09.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 06/08/2017] [Accepted: 09/15/2017] [Indexed: 12/31/2022]
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22
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Sunkaria A, Yadav A, Bhardwaj S, Sandhir R. Postnatal Proteasome Inhibition Promotes Amyloid-β Aggregation in Hippocampus and Impairs Spatial Learning in Adult Mice. Neuroscience 2017; 367:47-59. [DOI: 10.1016/j.neuroscience.2017.10.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 09/09/2017] [Accepted: 10/16/2017] [Indexed: 12/13/2022]
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23
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Andrews JL, Goodfellow FJ, Matosin N, Snelling MK, Newell KA, Huang XF, Fernandez-Enright F. Alterations of ubiquitin related proteins in the pathology and development of schizophrenia: Evidence from human and animal studies. J Psychiatr Res 2017; 90:31-39. [PMID: 28226265 DOI: 10.1016/j.jpsychires.2017.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/22/2016] [Accepted: 01/17/2017] [Indexed: 12/13/2022]
Abstract
Gene expression analyses in post-mortem schizophrenia brains suggest that a number of ubiquitin proteasome system (UPS) genes are associated with schizophrenia; however the status of UPS proteins in the schizophrenia brain is largely unknown. Ubiquitin related proteins are inherently involved in memory, neuronal survival and morphology, which are processes implicated in neurodevelopmental disorders such as schizophrenia. We examined levels of five UPS proteins (Protein Inhibitor of Activated STAT2 [PIAS2], F-Box and Leucine rich repeat protein 21 [FBXL21], Mouse Double Minute 2 homolog [MDM2], Ubiquitin Carboxyl-Terminal Hydrolase-L1 [UCHL1] and Ubiquitin Conjugating Enzyme E2D1 [UBE2D1]) involved in these neuronal processes, within the dorsolateral prefrontal cortex of post-mortem schizophrenia subjects and matched controls (n = 30/group), in addition to across neurodevelopmental time-points (juvenile, adolescent and adult stages of life), utilizing a well-established neurodevelopmental phencyclidine (PCP) animal model of schizophrenia. We observed significant reductions in PIAS2, FBXL21 and MDM2 in schizophrenia subjects compared to controls (p-values ranging from 0.002 to 0.004). In our developmental PCP model, MDM2 protein was significantly reduced in adult PCP-treated rats compared to controls (p = 0.034). Additionally, FBXL21 (p = 0.022) and UCHL1 (p = 0.022) were significantly decreased, whilst UBE2D1 was increased (p = 0.022), in juvenile phencyclidine-treated rats compared to controls. This is the first study reporting alterations of UPS proteins in post-mortem human schizophrenia subjects and in a neurodevelopmental model of schizophrenia. The findings from this study provide strong support for a role of these UPS proteins in the pathology and development of schizophrenia.
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Affiliation(s)
- Jessica L Andrews
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia; Schizophrenia Research Institute, Sydney, NSW 2010, Australia.
| | - Frederic J Goodfellow
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Natalie Matosin
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia; Schizophrenia Research Institute, Sydney, NSW 2010, Australia.
| | - Mollie K Snelling
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Kelly A Newell
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia; Schizophrenia Research Institute, Sydney, NSW 2010, Australia.
| | - Xu-Feng Huang
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia; Schizophrenia Research Institute, Sydney, NSW 2010, Australia.
| | - Francesca Fernandez-Enright
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia; Schizophrenia Research Institute, Sydney, NSW 2010, Australia; Faculty of Social Sciences, University of Wollongong, Wollongong, NSW 2522, Australia.
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Expression profile of a Caenorhabditis elegans model of adult neuronal ceroid lipofuscinosis reveals down regulation of ubiquitin E3 ligase components. Sci Rep 2015; 5:14392. [PMID: 26395859 PMCID: PMC4585785 DOI: 10.1038/srep14392] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 08/28/2015] [Indexed: 12/24/2022] Open
Abstract
Cysteine string protein (CSP) is a chaperone of the Dnaj/Hsp40 family of proteins and is essential for synaptic maintenance. Mutations in the human gene encoding CSP, DNAJC5, cause adult neuronal ceroid lipofucinosis (ANCL) which is characterised by progressive dementia, movement disorders, seizures and premature death. CSP null models in mice, flies and worms have been shown to also exhibit similar neurodegenerative phenotypes. Here we have explored the mechanisms underlying ANCL disease progression using Caenorhaditis elegans mutant strains of dnj-14, the worm orthologue of DNAJC5. Transcriptional profiling of these mutants compared to control strains revealed a broad down-regulation of ubiquitin proteasome system (UPS)-related genes, in particular, components of multimeric RING E3 ubiquitin ligases including F-Box, SKR and BTB proteins. These data were supported by the observation that dnj-14 mutant worm strains expressing a GFP-tagged ubiquitin fusion degradation substrate exhibited decreased ubiquitylated protein degradation. The results indicate that disruption of an essential synaptic chaperone leads to changes in expression levels of UPS-related proteins which has a knock-on effect on overall protein degradation in C. elegans. The specific over-representation of E3 ubiquitin ligase components revealed in our study, suggests that proteins and complexes upstream of the proteasome itself may be beneficial therapeutic targets.
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Dennis KE, Valentine WM. Ziram and sodium N,N-dimethyldithiocarbamate inhibit ubiquitin activation through intracellular metal transport and increased oxidative stress in HEK293 cells. Chem Res Toxicol 2015; 28:682-90. [PMID: 25714994 PMCID: PMC4406076 DOI: 10.1021/tx500450x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
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Ubiquitin activating enzyme E1 plays
a pivotal role in ubiquitin
based protein signaling through regulating the initiating step of
the cascade. Previous studies demonstrated that E1 is inhibited by
covalent modification of reactive cysteines contained within the ubiquitin-binding
groove and by conditions that increase oxidative stress and deplete
cellular antioxidants. In this study, we determined the relative contribution
of covalent adduction and oxidative stress to E1 inhibition produced
by ziram and sodium N,N-dimethyldithiocarbamate
(DMDC) in HEK293 cells. Although no dithiocarbamate-derived E1 adducts
were identified on E1 using shotgun LC/MS/MS for either ziram or DMDC,
both dithiocarbamates significantly decreased E1 activity, with ziram
demonstrating greater potency. Ziram increased intracellular levels
of zinc and copper, DMDC increased intracellular levels of only copper,
and both dithiocarbamates enhanced oxidative injury evidenced by elevated
levels of protein carbonyls and expression of heme oxygenase-1. To
assess the contribution of intracellular copper transport to E1 inhibition,
coincubations were performed with the copper chelator triethylenetetramine
hydrochloride (TET). TET significantly protected E1 activity for both
of the dithiocarbamates and decreased the associated oxidative injury
in HEK293 cells as well as prevented dithiocarbamate-mediated lipid
peroxidation assayed using an ethyl aracidonate micelle system. Because
TET did not completely ameliorate intracellular transport of copper
or zinc for ziram, TET apparently maintained E1 activity through its
ability to diminish dithiocarbamate-mediated oxidative stress. Experiments
to determine the relative contribution of elevated intracellular zinc
and copper were performed using a metal free incubation system and
showed that increases in either metal were sufficient to inhibit E1.
To evaluate the utility of the HEK293 in vitro system for screening
environmental agents, a series of additional pesticides and metals
was assayed, and eight agents that produced a significant decrease
and five that produced a significant increase in activated E1 were
identified. These studies suggest that E1 is a sensitive redox sensor
that can be modulated by exposure to environmental agents and can
regulate downstream cellular processes.
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Affiliation(s)
- Kathleen E Dennis
- †Department of Pathology, Microbiology and Immunology, ‡Center in Molecular Toxicology, §Vanderbilt Brain Institute, Vanderbilt University Medical Center, 1161 21st Avenue South, Nashville, Tennessee 37232-2561, United States
| | - William M Valentine
- †Department of Pathology, Microbiology and Immunology, ‡Center in Molecular Toxicology, §Vanderbilt Brain Institute, Vanderbilt University Medical Center, 1161 21st Avenue South, Nashville, Tennessee 37232-2561, United States
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The amazing ubiquitin-proteasome system: structural components and implication in aging. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2014; 314:171-237. [PMID: 25619718 DOI: 10.1016/bs.ircmb.2014.09.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Proteome quality control (PQC) is critical for the maintenance of cellular functionality and it is assured by the curating activity of the proteostasis network (PN). PN is constituted of several complex protein machines that under conditions of proteome instability aim to, firstly identify, and then, either rescue or degrade nonnative polypeptides. Central to the PN functionality is the ubiquitin-proteasome system (UPS) which is composed from the ubiquitin-conjugating enzymes and the proteasome; the latter is a sophisticated multi-subunit molecular machine that functions in a bimodal way as it degrades both short-lived ubiquitinated normal proteins and nonfunctional polypeptides. UPS is also involved in PQC of the nucleus, the endoplasmic reticulum and the mitochondria and it also interacts with the other main cellular degradation axis, namely the autophagy-lysosome system. UPS functionality is optimum in the young organism but it is gradually compromised during aging resulting in increasing proteotoxic stress; these effects correlate not only with aging but also with most age-related diseases. Herein, we present a synopsis of the UPS components and of their functional alterations during cellular senescence or in vivo aging. We propose that mild UPS activation in the young organism will, likely, promote antiaging effects and/or suppress age-related diseases.
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Chondrogianni N, Sakellari M, Lefaki M, Papaevgeniou N, Gonos ES. Proteasome activation delays aging in vitro and in vivo. Free Radic Biol Med 2014; 71:303-320. [PMID: 24681338 DOI: 10.1016/j.freeradbiomed.2014.03.031] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 03/18/2014] [Accepted: 03/18/2014] [Indexed: 02/02/2023]
Abstract
Aging is a natural biological process that is characterized by a progressive accumulation of macromolecular damage. In the proteome, aging is accompanied by decreased protein homeostasis and function of the major cellular proteolytic systems, leading to the accumulation of unfolded, misfolded, or aggregated proteins. In particular, the proteasome is responsible for the removal of normal as well as damaged or misfolded proteins. Extensive work during the past several years has clearly demonstrated that proteasome activation by either genetic means or use of compounds significantly retards aging. Importantly, this represents a common feature across evolution, thereby suggesting proteasome activation to be an evolutionarily conserved mechanism of aging and longevity regulation. This review article reports on the means of function of these proteasome activators and how they regulate aging in various species.
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Affiliation(s)
- Niki Chondrogianni
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece.
| | - Marianthi Sakellari
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece; Örebro University Medical School, Örebro, Sweden
| | - Maria Lefaki
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece
| | - Nikoletta Papaevgeniou
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece
| | - Efstathios S Gonos
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece; Örebro University Medical School, Örebro, Sweden
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28
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Role of early life exposure and environment on neurodegeneration: implications on brain disorders. Transl Neurodegener 2014; 3:9. [PMID: 24847438 PMCID: PMC4028099 DOI: 10.1186/2047-9158-3-9] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Accepted: 04/17/2014] [Indexed: 12/12/2022] Open
Abstract
Neurodegenerative diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), Amyotrophic lateral sclerosis (ALS) and retinal degeneration have been studied extensively and varying molecular mechanisms have been proposed for onset of such diseases. Although genetic analysis of these diseases has also been described, yet the mechanisms governing the extent of vulnerability to such diseases remains unresolved. Recent studies have, therefore, focused on the role of environmental exposure in progression of such diseases especially in the context of prenatal and postnatal life, explaining how molecular mechanisms mediate epigenetic changes leading to degenerative diseases. This review summarizes both the animal and human studies describing various environmental stimuli to which an individual or an animal is exposed during in-utero and postnatal period and mechanisms that promote neurodegeneration. The SNPs mediating gene environment interaction are also described. Further, preventive and therapeutic strategies are suggested for effective intervention.
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Yan S, Wang CE, Wei W, Gaertig MA, Lai L, Li S, Li XJ. TDP-43 causes differential pathology in neuronal versus glial cells in the mouse brain. Hum Mol Genet 2013; 23:2678-93. [PMID: 24381309 DOI: 10.1093/hmg/ddt662] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Mutations in TAR DNA-binding protein 43 (TDP-43) are associated with familial forms of amyotrophic lateral sclerosis and frontotemporal lobar degeneration. Although recent studies have revealed that mutant TDP-43 in neuronal and glial cells is toxic, how mutant TDP-43 causes primarily neuronal degeneration in an age-dependent manner remains unclear. Using adeno-associated virus (AAV) that expresses mutant TDP-43 (M337V) ubiquitously, we found that mutant TDP-43 accumulates preferentially in neuronal cells in the postnatal mouse brain. We then ubiquitously or selectively expressed mutant TDP-43 in neuronal and glial cells in the striatum of adult mouse brains via stereotaxic injection of AAV vectors and found that it also preferentially accumulates in neuronal cells. Expression of mutant TDP-43 in neurons in the striatum causes more severe degeneration, earlier death and more robust symptoms in mice than expression of mutant TDP-43 in glial cells; however, aging increases the expression of mutant TDP-43 in glial cells, and expression of mutant TDP-43 in older mice caused earlier onset of phenotypes and more severe neuropathology than that in younger mice. Although expression of mutant TDP-43 in glial cells via stereotaxic injection does not lead to robust neurological phenotypes, systemic inhibition of the proteasome activity via MG132 in postnatal mice could exacerbate glial TDP-43-mediated toxicity and cause mice to die earlier. Consistently, this inhibition increases the expression of mutant TDP-43 in glial cells in mouse brains. Thus, the differential accumulation of mutant TDP-43 in neuronal versus glial cells contributes to the preferential toxicity of mutant TDP-43 in neuronal cells and age-dependent pathology.
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Affiliation(s)
- Sen Yan
- Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA 30322, USA
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30
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Delli Pizzi S, Rossi C, Di Matteo V, Esposito E, Guarnieri S, Mariggiò MA, Franciotti R, Caulo M, Thomas A, Onofrj M, Tartaro A, Bonanni L. Morphological and metabolic changes in the nigro-striatal pathway of synthetic proteasome inhibitor (PSI)-treated rats: a MRI and MRS study. PLoS One 2013; 8:e56501. [PMID: 23431380 PMCID: PMC3576393 DOI: 10.1371/journal.pone.0056501] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2012] [Accepted: 01/10/2013] [Indexed: 12/25/2022] Open
Abstract
Systemic administration of a Synthetic Proteasome Inhibitor (PSI) in rats has been described as able to provide a model of Parkinson's disease (PD), characterized by behavioral and biochemical modifications, including loss of dopaminergic neurons in the substantia nigra (SN), as assessed by post-mortem studies. With the present study we aimed to assess in-vivo by Magnetic Resonance (MR) possible morphological and metabolic changes in the nigro-striatal pathway of PSI-treated rats. 10 animals were subcutaneously injected with PSI 6.0 mg/kg dissolved in DMSO 100%. Injections were made thrice weekly over the course of two weeks. 5 more animals injected with DMSO 100% with the same protocol served as controls. The animals underwent MR sessions before and at four weeks after the end of treatment with either PSI or vehicle. MR Imaging was performed to measure SN volume and Proton MR Spectroscopy ((1)H-MRS) was performed to measure metabolites changes at the striatum. Animals were also assessed for motor function at baseline and at 4 and 6 weeks after treatment. Dopamine and dopamine metabolite levels were measured in the striata at 6 weeks after treatment. PSI-treated animals showed volumetric reduction of the SN (p<0.02) at 4 weeks after treatment as compared to baseline. Immunofluorescence analysis confirmed MRI changes in SN showing a reduction of tyrosine hydroxylase expression as compared to neuron-specific enolase expression. A reduction of N-acetyl-aspartate/total creatine ratio (p = 0.05) and an increase of glutamate-glutamine-γ amminobutirrate/total creatine were found at spectroscopy (p = 0.03). At 6 weeks after treatment, PSI-treated rats also showed motor dysfunction compared to baseline (p = 0.02), accompanied by dopamine level reduction in the striatum (p = 0.02). Treatment with PSI produced morphological and metabolic modifications of the nigro-striatal pathway, accompanied by motor dysfunction. MR demonstrated to be a powerful mean to assess in-vivo the nigro-striatal pathway morphology and metabolism in the PSI-based PD animal model.
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Affiliation(s)
- Stefano Delli Pizzi
- ITAB, “G. D’Annunzio University”, Chieti, Italy
- Department of Neuroscience and Imaging and CE.S.I. Aging Research Center, University G.d’Annunzio of Chieti-Pescara, Italy
| | - Cosmo Rossi
- Aging Research Center, Ce.S.I., “Gabriele d’Annunzio” University Foundation, Chieti, Italy
| | - Vincenzo Di Matteo
- Laboratory of Neurophysiology, Istituto di Ricerche Farmacologiche Mario Negri, Consorzio Mario Negri Sud, Santa Maria Imbaro (Chieti), Italy
| | - Ennio Esposito
- Laboratory of Neurophysiology, Istituto di Ricerche Farmacologiche Mario Negri, Consorzio Mario Negri Sud, Santa Maria Imbaro (Chieti), Italy
| | - Simone Guarnieri
- Department of Neuroscience and Imaging and CE.S.I. Aging Research Center, University G.d’Annunzio of Chieti-Pescara, Italy
| | - Maria Addolorata Mariggiò
- Department of Neuroscience and Imaging and CE.S.I. Aging Research Center, University G.d’Annunzio of Chieti-Pescara, Italy
| | | | - Massimo Caulo
- ITAB, “G. D’Annunzio University”, Chieti, Italy
- Department of Neuroscience and Imaging and CE.S.I. Aging Research Center, University G.d’Annunzio of Chieti-Pescara, Italy
| | - Astrid Thomas
- Department of Neuroscience and Imaging and CE.S.I. Aging Research Center, University G.d’Annunzio of Chieti-Pescara, Italy
| | - Marco Onofrj
- Department of Neuroscience and Imaging and CE.S.I. Aging Research Center, University G.d’Annunzio of Chieti-Pescara, Italy
| | - Armando Tartaro
- ITAB, “G. D’Annunzio University”, Chieti, Italy
- Department of Neuroscience and Imaging and CE.S.I. Aging Research Center, University G.d’Annunzio of Chieti-Pescara, Italy
| | - Laura Bonanni
- Department of Neuroscience and Imaging and CE.S.I. Aging Research Center, University G.d’Annunzio of Chieti-Pescara, Italy
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31
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Chondrogianni N, Petropoulos I, Grimm S, Georgila K, Catalgol B, Friguet B, Grune T, Gonos ES. Protein damage, repair and proteolysis. Mol Aspects Med 2012; 35:1-71. [PMID: 23107776 DOI: 10.1016/j.mam.2012.09.001] [Citation(s) in RCA: 160] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 09/26/2012] [Indexed: 01/10/2023]
Abstract
Proteins are continuously affected by various intrinsic and extrinsic factors. Damaged proteins influence several intracellular pathways and result in different disorders and diseases. Aggregation of damaged proteins depends on the balance between their generation and their reversal or elimination by protein repair systems and degradation, respectively. With regard to protein repair, only few repair mechanisms have been evidenced including the reduction of methionine sulfoxide residues by the methionine sulfoxide reductases, the conversion of isoaspartyl residues to L-aspartate by L-isoaspartate methyl transferase and deglycation by phosphorylation of protein-bound fructosamine by fructosamine-3-kinase. Protein degradation is orchestrated by two major proteolytic systems, namely the lysosome and the proteasome. Alteration of the function for both systems has been involved in all aspects of cellular metabolic networks linked to either normal or pathological processes. Given the importance of protein repair and degradation, great effort has recently been made regarding the modulation of these systems in various physiological conditions such as aging, as well as in diseases. Genetic modulation has produced promising results in the area of protein repair enzymes but there are not yet any identified potent inhibitors, and, to our knowledge, only one activating compound has been reported so far. In contrast, different drugs as well as natural compounds that interfere with proteolysis have been identified and/or developed resulting in homeostatic maintenance and/or the delay of disease progression.
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Affiliation(s)
- Niki Chondrogianni
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Helenic Research Foundation, 48 Vas. Constantinou Ave., 116 35 Athens, Greece.
| | - Isabelle Petropoulos
- Laboratoire de Biologie Cellulaire du Vieillissement, UR4-UPMC, IFR 83, Université Pierre et Marie Curie-Paris 6, 4 Place Jussieu, 75005 Paris, France
| | - Stefanie Grimm
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich-Schiller University, Dornburger Straße 24, 07743 Jena, Germany
| | - Konstantina Georgila
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Helenic Research Foundation, 48 Vas. Constantinou Ave., 116 35 Athens, Greece
| | - Betul Catalgol
- Department of Biochemistry, Faculty of Medicine, Genetic and Metabolic Diseases Research Center (GEMHAM), Marmara University, Haydarpasa, Istanbul, Turkey
| | - Bertrand Friguet
- Laboratoire de Biologie Cellulaire du Vieillissement, UR4-UPMC, IFR 83, Université Pierre et Marie Curie-Paris 6, 4 Place Jussieu, 75005 Paris, France
| | - Tilman Grune
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich-Schiller University, Dornburger Straße 24, 07743 Jena, Germany
| | - Efstathios S Gonos
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Helenic Research Foundation, 48 Vas. Constantinou Ave., 116 35 Athens, Greece.
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