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Acevedo A, Torres F, Kiwi M, Baeza-Lehnert F, Barros LF, Lee-Liu D, González-Billault C. Metabolic switch in the aging astrocyte supported via integrative approach comprising network and transcriptome analyses. Aging (Albany NY) 2023; 15:9896-9912. [PMID: 37074814 PMCID: PMC10599759 DOI: 10.18632/aging.204663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/20/2023] [Indexed: 04/20/2023]
Abstract
Dysregulated central-energy metabolism is a hallmark of brain aging. Supplying enough energy for neurotransmission relies on the neuron-astrocyte metabolic network. To identify genes contributing to age-associated brain functional decline, we formulated an approach to analyze the metabolic network by integrating flux, network structure and transcriptomic databases of neurotransmission and aging. Our findings support that during brain aging: (1) The astrocyte undergoes a metabolic switch from aerobic glycolysis to oxidative phosphorylation, decreasing lactate supply to the neuron, while the neuron suffers intrinsic energetic deficit by downregulation of Krebs cycle genes, including mdh1 and mdh2 (Malate-Aspartate Shuttle); (2) Branched-chain amino acid degradation genes were downregulated, identifying dld as a central regulator; (3) Ketone body synthesis increases in the neuron, while the astrocyte increases their utilization, in line with neuronal energy deficit in favor of astrocytes. We identified candidates for preclinical studies targeting energy metabolism to prevent age-associated cognitive decline.
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Affiliation(s)
- Alejandro Acevedo
- Instituto de Nutrición y Tecnología de Alimentos (INTA), Universidad de Chile, Santiago, Región Metropolitana 7800003, Chile
| | - Felipe Torres
- Department of Physics, Universidad de Chile, Santiago, Región Metropolitana 7800003, Chile
- Center for the Development of Nanoscience and Nanotechnology, CEDENNA, Santiago, Región Metropolitana 7800003, Chile
- Department of Physics, Center for Advanced Nanoscience, University of California, San Diego, CA 92093, USA
| | - Miguel Kiwi
- Department of Physics, Universidad de Chile, Santiago, Región Metropolitana 7800003, Chile
- Center for the Development of Nanoscience and Nanotechnology, CEDENNA, Santiago, Región Metropolitana 7800003, Chile
| | | | - L. Felipe Barros
- Centro de Estudios Científicos (CECs), Valdivia 5110466, Chile
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Valdivia, Región de Los Ríos 5110773, Chile
| | - Dasfne Lee-Liu
- Department of Biology, Laboratory of Cellular and Neuronal Dynamics, Faculty of Sciences, Universidad de Chile, Santiago, Región Metropolitana 7800003, Chile
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Región Metropolitana 7800003, Chile
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Región Metropolitana 7510157, Chile
| | - Christian González-Billault
- Department of Biology, Laboratory of Cellular and Neuronal Dynamics, Faculty of Sciences, Universidad de Chile, Santiago, Región Metropolitana 7800003, Chile
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Región Metropolitana 7800003, Chile
- The Buck Institute for Research on Aging, Novato, CA 94945, USA
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Immune Memory in Aging: a Wide Perspective Covering Microbiota, Brain, Metabolism, and Epigenetics. Clin Rev Allergy Immunol 2021; 63:499-529. [PMID: 34910283 PMCID: PMC8671603 DOI: 10.1007/s12016-021-08905-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2021] [Indexed: 11/06/2022]
Abstract
Non-specific innate and antigen-specific adaptive immunological memories are vital evolutionary adaptations that confer long-lasting protection against a wide range of pathogens. Adaptive memory is established by memory T and B lymphocytes following the recognition of an antigen. On the other hand, innate immune memory, also called trained immunity, is imprinted in innate cells such as macrophages and natural killer cells through epigenetic and metabolic reprogramming. However, these mechanisms of memory generation and maintenance are compromised as organisms age. Almost all immune cell types, both mature cells and their progenitors, go through age-related changes concerning numbers and functions. The aging immune system renders the elderly highly susceptible to infections and incapable of mounting a proper immune response upon vaccinations. Besides the increased infectious burden, older individuals also have heightened risks of metabolic and neurodegenerative diseases, which have an immunological component. This review discusses how immune function, particularly the establishment and maintenance of innate and adaptive immunological memory, regulates and is regulated by epigenetics, metabolic processes, gut microbiota, and the central nervous system throughout life, with a focus on old age. We explain in-depth how epigenetics and cellular metabolism impact immune cell function and contribute or resist the aging process. Microbiota is intimately linked with the immune system of the human host, and therefore, plays an important role in immunological memory during both homeostasis and aging. The brain, which is not an immune-isolated organ despite former opinion, interacts with the peripheral immune cells, and the aging of both systems influences the health of each other. With all these in mind, we aimed to present a comprehensive view of the aging immune system and its consequences, especially in terms of immunological memory. The review also details the mechanisms of promising anti-aging interventions and highlights a few, namely, caloric restriction, physical exercise, metformin, and resveratrol, that impact multiple facets of the aging process, including the regulation of innate and adaptive immune memory. We propose that understanding aging as a complex phenomenon, with the immune system at the center role interacting with all the other tissues and systems, would allow for more effective anti-aging strategies.
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Jové M, Mota-Martorell N, Torres P, Portero-Otin M, Ferrer I, Pamplona R. New insights into human prefrontal cortex aging with a lipidomics approach. Expert Rev Proteomics 2021; 18:333-344. [PMID: 34098823 DOI: 10.1080/14789450.2021.1940142] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Human prefrontal cortex (hPFC) is a recent evolutionarily developed brain region involved in cognitive functions. Human cognitive functions decline during aging. Yet the molecular mechanisms underlying the functional deterioration of the neural cells of this brain region still remain to be fully described. AREAS COVERED In this review, we explore the role of lipids in hPFC aging. Firstly, we briefly consider the approaches used to identify lipid species in brain tissue with special attention paid to a lipidomics analysis. Then, as the evolution process has conferred a specific lipid profile on the hPFC, we consider the lipidome of hPFC. In addition, the role of lipids in hPFC aging, and in particular, the cognitive decline associated with aging, is discussed. Finally, nutritional and pharmacological interventions designed to modulate this process are examined. It is suggested that the dysfunction of key cellular processes secondarily to the damage of lipid membrane underlies the cognitive decline of hPFC during aging. EXPERT OPINION Lipidomics methods are and will continue to be key tools in the effort to gain additional insights into the aging of the human brain.
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Affiliation(s)
- Mariona Jové
- Department of Experimental Medicine, University of Lleida-Lleida Biomedical Research Institute (Udl-irblleida), Lleida, Spain
| | - Natalia Mota-Martorell
- Department of Experimental Medicine, University of Lleida-Lleida Biomedical Research Institute (Udl-irblleida), Lleida, Spain
| | - Pascual Torres
- Department of Experimental Medicine, University of Lleida-Lleida Biomedical Research Institute (Udl-irblleida), Lleida, Spain
| | - Manuel Portero-Otin
- Department of Experimental Medicine, University of Lleida-Lleida Biomedical Research Institute (Udl-irblleida), Lleida, Spain
| | - Isidre Ferrer
- Department of Pathology and Experimental Therapeutics, University of Barcelona; Bellvitge University Hospital, L'Hospitalet de Llobregat, Barcelona, Spain.,Center for Biomedical Research on Neurodegenerative Diseases (CIBERNED), ISCIII, Madrid, Spain
| | - Reinald Pamplona
- Department of Experimental Medicine, University of Lleida-Lleida Biomedical Research Institute (Udl-irblleida), Lleida, Spain
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Xie K, Qin Q, Long Z, Yang Y, Peng C, Xi C, Li L, Wu Z, Daria V, Zhao Y, Wang F, Wang M. High-Throughput Metabolomics for Discovering Potential Biomarkers and Identifying Metabolic Mechanisms in Aging and Alzheimer's Disease. Front Cell Dev Biol 2021; 9:602887. [PMID: 33718349 PMCID: PMC7947003 DOI: 10.3389/fcell.2021.602887] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 02/04/2021] [Indexed: 01/21/2023] Open
Abstract
Alzheimer's disease (AD) is an aging-related neurodegenerative disease. We aimed to investigate the metabolic mechanisms of aging and AD and to identify potential biomarkers for the early screening of AD in a natural aging population. To analyze the plasma metabolites related to aging, we conducted an untargeted metabolomics analysis using ultra-high-performance liquid chromatography/quadrupole time-of-flight mass spectrometry in a two-stage cross-sectional study. Spearman's correlation analysis and random forest were applied to model the relationship between age and each metabolite. Moreover, a systematic review of metabolomics studies of AD in the PubMed, Cochrane and Embase databases were searched to extract the differential metabolites and altered pathways from original studies. Pathway enrichment analysis was conducted using Mummichog. In total, 669 metabolites were significantly altered with aging, and 12 pathways were enriched and correlated with aging. Three pathways (purine metabolism, arginine and proline metabolism, and the TCA cycle) were shared between aging and AD. Arginine and proline metabolism play a key role in the progression from healthy to mild cognitive impairment and to AD in the natural aging population. Three metabolites, 16-a-hydroxypregnenolone, stearic acid and PC[16:0/22:5(4Z,7Z,10Z,13Z,16Z)] were finally proposed as potential markers of AD in the natural aging population. The underlying mechanism shared between aging and AD and the potential biomarkers for AD diagnosis were proposed based on multistep comparative analysis.
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Affiliation(s)
- Kun Xie
- Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin, China
| | - Qi Qin
- Department of Neurology, Innovation Center for Neurological Disorders, National Clinical Research Center for Geriatric Diseases, Xuan Wu Hospital, Capital Medical University, Beijing, China
| | - Zhiping Long
- Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin, China
| | - Yihui Yang
- Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin, China
| | - Chenghai Peng
- The Forth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chunyang Xi
- Department of Orthopedic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Liangliang Li
- Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin, China
| | - Zhen Wu
- Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin, China
| | - Volontovich Daria
- Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin, China
| | - Yashuang Zhao
- Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin, China
| | - Fan Wang
- Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin, China
| | - Maoqing Wang
- National Key Disciplines of Nutrition and Food Hygiene, Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, China
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Yu W, Jin H, Huang Y. Mitochondria-associated membranes (MAMs): a potential therapeutic target for treating Alzheimer's disease. Clin Sci (Lond) 2021; 135:109-126. [PMID: 33404051 PMCID: PMC7796309 DOI: 10.1042/cs20200844] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 10/02/2020] [Accepted: 10/19/2020] [Indexed: 12/11/2022]
Abstract
Alzheimer's disease (AD), a progressive neurodegenerative disorder, is a leading global health concern for individuals and society. However, the potential mechanisms underlying the pathogenesis of AD have not yet been elucidated. Currently, the most widely acknowledged hypothesis is amyloid cascade owing to the brain characteristics of AD patients, including great quantities of extracellular β-amyloid (Aβ) plaques and intracellular neurofibrillary tangles (NFTs). Nevertheless, the amyloid cascade hypothesis cannot address certain pathologies that precede Aβ deposition and NFTs formation in AD, such as aberrant calcium homeostasis, abnormal lipid metabolism, mitochondrial dysfunction and autophagy. Notably, these earlier pathologies are closely associated with mitochondria-associated membranes (MAMs), the physical structures connecting the endoplasmic reticulum (ER) and mitochondria, which mediate the communication between these two organelles. It is plausible that MAMs might be involved in a critical step in the cascade of earlier events, ultimately inducing neurodegeneration in AD. In this review, we focus on the role of MAMs in the regulation of AD pathologies and the potential molecular mechanisms related to MAM-mediated pathological changes in AD. An enhanced recognition of the preclinical pathogenesis in AD could provide new therapeutic strategies, shifting the modality from treatment to prevention.
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Affiliation(s)
- Weiwei Yu
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street Xicheng District, Beijing, China 100034
| | - Haiqiang Jin
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street Xicheng District, Beijing, China 100034
| | - Yining Huang
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street Xicheng District, Beijing, China 100034
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Changes in Hippocampal Plasticity in Depression and Therapeutic Approaches Influencing These Changes. Neural Plast 2020; 2020:8861903. [PMID: 33293948 PMCID: PMC7718046 DOI: 10.1155/2020/8861903] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/30/2020] [Accepted: 11/11/2020] [Indexed: 02/06/2023] Open
Abstract
Depression is a common neurological disease that seriously affects human health. There are many hypotheses about the pathogenesis of depression, and the most widely recognized and applied is the monoamine hypothesis. However, no hypothesis can fully explain the pathogenesis of depression. At present, the brain-derived neurotrophic factor (BDNF) and neurogenesis hypotheses have highlighted the important role of plasticity in depression. The plasticity of neurons and glial cells plays a vital role in the transmission and integration of signals in the central nervous system. Plasticity is the adaptive change in the nervous system in response to changes in external signals. The hippocampus is an important anatomical area associated with depression. Studies have shown that some antidepressants can treat depression by changing the plasticity of the hippocampus. Furthermore, caloric restriction has also been shown to affect antidepressant and hippocampal plasticity changes. In this review, we summarize the latest research, focusing on changes in the plasticity of hippocampal neurons and glial cells in depression and the role of BDNF in the changes in hippocampal plasticity in depression, as well as caloric restriction and mitochondrial plasticity. This review may contribute to the development of antidepressant drugs and elucidating the mechanism of depression.
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Physiopathology of Lifestyle Interventions in Non-Alcoholic Fatty Liver Disease (NAFLD). Nutrients 2020; 12:nu12113472. [PMID: 33198247 PMCID: PMC7697937 DOI: 10.3390/nu12113472] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 11/06/2020] [Indexed: 12/12/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a major health problem, and its prevalence has increased in recent years. Diet and exercise interventions are the first-line treatment options, with weight loss via a hypocaloric diet being the most important therapeutic target in NAFLD. However, most NAFLD patients are not able to achieve such weight loss. Therefore, the requisite is the investigation of other effective therapeutic approaches. This review summarizes research on understanding complex pathophysiology underlying dietary approaches and exercise interventions with the potential to prevent and treat NAFLD.
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8
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Morgan LD, Mohammed A, Patel BA, Arundell M, Jennert-Burtson K, Hernádi L, Overall A, Bowler LD, O'Hare D, Yeoman MS. Decreased 14-3-3 expression correlates with age-related regional reductions in CNS dopamine and motor function in the pond snail, Lymnaea. Eur J Neurosci 2020; 53:1394-1411. [PMID: 33131114 DOI: 10.1111/ejn.15033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 10/23/2020] [Accepted: 10/24/2020] [Indexed: 11/28/2022]
Abstract
Ageing is associated in many organisms with a reduction in motor movements. We have previously shown that the rate of feeding movements of the pond snail, Lymnaea, decreased with age but the underlying cause is not fully understood. Here, we show that dopamine in the cerebro-buccal complex is an important signalling molecule regulating feeding frequency in Lymnaea and that ageing is associated with a decrease in CNS dopamine. A proteomic screen of young and old CNSs highlighted a group of proteins that regulate stress responses. One of the proteins identified was 14-3-3, which can enhance the synthesis of dopamine. We show that the Lymnaea 14-3-3 family exists as three distinct isoforms. The expression of the 29 kDa isoform (14-3-3Lym3) in the cerebro-buccal complex decreased with age and correlated with feeding rate. Using a 14-3-3 antagonist (R18) we were able to reduce the synthesis of L-DOPA and dopamine in ex vivo cerebro-buccal complexes. Together these data suggest that an age-related reduction in 14-3-3 can decrease CNS dopamine leading to a consequential reduction in feeding rate.
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Affiliation(s)
- Lindsay D Morgan
- Centre for Stress and Age-Related Disease, School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Aiyaz Mohammed
- Centre for Stress and Age-Related Disease, School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Bhavik Anil Patel
- Centre for Stress and Age-Related Disease, School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Martin Arundell
- Department of Bioengineering, College of Science Technology & Medicine, Imperial College, University of London, London, UK
| | - Katrin Jennert-Burtson
- Centre for Stress and Age-Related Disease, School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - László Hernádi
- Balaton Limnological Institute, Centre for Ecological Research, Tihany, Hungary
| | - Andrew Overall
- Centre for Stress and Age-Related Disease, School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Lucas D Bowler
- Centre for Stress and Age-Related Disease, School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Danny O'Hare
- Department of Bioengineering, College of Science Technology & Medicine, Imperial College, University of London, London, UK
| | - Mark S Yeoman
- Centre for Stress and Age-Related Disease, School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
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Skariah G, Todd PK. Translational control in aging and neurodegeneration. WILEY INTERDISCIPLINARY REVIEWS-RNA 2020; 12:e1628. [PMID: 32954679 DOI: 10.1002/wrna.1628] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 08/19/2020] [Accepted: 09/07/2020] [Indexed: 12/13/2022]
Abstract
Protein metabolism plays central roles in age-related decline and neurodegeneration. While a large body of research has explored age-related changes in protein degradation, alterations in the efficiency and fidelity of protein synthesis with aging are less well understood. Age-associated changes occur in both the protein synthetic machinery (ribosomal proteins and rRNA) and within regulatory factors controlling translation. At the same time, many of the interventions that prolong lifespan do so in part by pre-emptively decreasing protein synthesis rates to allow better harmonization to age-related declines in protein catabolism. Here we review the roles of translation regulation in aging, with a specific focus on factors implicated in age-related neurodegeneration. We discuss how emerging technologies such as ribosome profiling and superior mass spectrometric approaches are illuminating age-dependent mRNA-specific changes in translation rates across tissues to reveal a critical interplay between catabolic and anabolic pathways that likely contribute to functional decline. These new findings point to nodes in posttranscriptional gene regulation that both contribute to aging and offer targets for therapy. This article is categorized under: Translation > Translation Regulation Translation > Ribosome Biogenesis Translation > Translation Mechanisms.
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Affiliation(s)
- Geena Skariah
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Peter K Todd
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
- Ann Arbor VA Healthcare System, Department of Veterans Affairs, Ann Arbor, Michigan, USA
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Finelli MJ. Redox Post-translational Modifications of Protein Thiols in Brain Aging and Neurodegenerative Conditions-Focus on S-Nitrosation. Front Aging Neurosci 2020; 12:254. [PMID: 33088270 PMCID: PMC7497228 DOI: 10.3389/fnagi.2020.00254] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 07/24/2020] [Indexed: 12/14/2022] Open
Abstract
Reactive oxygen species and reactive nitrogen species (RONS) are by-products of aerobic metabolism. RONS trigger a signaling cascade that can be transduced through oxidation-reduction (redox)-based post-translational modifications (redox PTMs) of protein thiols. This redox signaling is essential for normal cellular physiology and coordinately regulates the function of redox-sensitive proteins. It plays a particularly important role in the brain, which is a major producer of RONS. Aberrant redox PTMs of protein thiols can impair protein function and are associated with several diseases. This mini review article aims to evaluate the role of redox PTMs of protein thiols, in particular S-nitrosation, in brain aging, and in neurodegenerative diseases. It also discusses the potential of using redox-based therapeutic approaches for neurodegenerative conditions.
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Affiliation(s)
- Mattéa J Finelli
- School of Medicine, Biodiscovery Institute, University of Nottingham, Nottingham, United Kingdom
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Garabadu D, Agrawal N, Sharma A, Sharma S. Mitochondrial metabolism: a common link between neuroinflammation and neurodegeneration. Behav Pharmacol 2020; 30:642-652. [PMID: 31625975 DOI: 10.1097/fbp.0000000000000505] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Neurodegenerative disorders have been considered as a growing health concern for decades. Increasing risk of neurodegenerative disorders creates a socioeconomic burden to both patients and care givers. Mitochondria are organelle that are involved in both neuroinflammation and neurodegeneration. There are few reports on the effect of mitochondrial metabolism on the progress of neurodegeneration and neuroinflammation. Therefore, the present review summarizes the potential contribution of mitochondrial metabolic pathways in the pathogenesis of neuroinflammation and neurodegeneration. Mitochondrial pyruvate metabolism plays a critical role in the pathogenesis of neurodegenerative disorders such as Parkinson's disease and Alzheimer's disease. However, there its potential contribution in other neurodegenerative disorders is as yet unproven. The mitochondrial pyruvate carrier and pyruvate dehydrogenase can modulate mitochondrial pyruvate metabolism to attenuate neuroinflammation and neurodegeneration. Further, it has been observed that the mitochondrial citric acid cycle can regulate the pathogenesis of neuroinflammation and neurodegeneration. Additional research should be undertaken to target tricarboxylic acid cycle enzymes to minimize the progress of neuroinflammation and neurodegeneration. It has also been observed that the mitochondrial urea cycle can potentially contribute to the progression of neurodegenerative disorders. Therefore, targeting this pathway may control the mitochondrial dysfunction-induced neuroinflammation and neurodegeneration. Furthermore, the mitochondrial malate-aspartate shuttle could be another target to control mitochondrial dysfunction-induced neuroinflammation and neurodegeneration in neurodegenerative disorders.
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Affiliation(s)
- Debapriya Garabadu
- Division of Pharmacology, Institute of Pharmaceutical Research, GLA University, Mathura, India
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12
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Pamplona R, Borras C, Jové M, Pradas I, Ferrer I, Viña J. Redox lipidomics to better understand brain aging and function. Free Radic Biol Med 2019; 144:310-321. [PMID: 30898667 DOI: 10.1016/j.freeradbiomed.2019.03.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/05/2019] [Accepted: 03/13/2019] [Indexed: 12/25/2022]
Abstract
Human prefrontal cortex (PFC) is a recently evolutionary emerged brain region involved in cognitive functions. Human cognitive abilities decline during aging. Yet the molecular mechanisms that sustain the preservation or deterioration of neurons and PFC functions are unknown. In this review, we focus on the role of lipids in human PFC aging. As the evolution of brain lipid concentrations is particularly accelerated in the human PFC, conferring a specific lipid profile, a brief approach to the lipidome of PFC was consider along with the relationship between lipids and lipoxidative damage, and the role of lipids in human PFC aging. In addition, the specific targets of lipoxidative damage in human PFC, the affected biological processes, and their potential role in the cognitive decline associated with aging are discussed. Finally, interventions designed to modify this process are considered. We propose that the dysfunction of key biological processes due to selective protein lipoxidation damage may have a role the cognitive decline of PFC during aging.
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Affiliation(s)
- Reinald Pamplona
- Department of Experimental Medicine, University of Lleida-Institute for Research in Biomedicine of Lleida (UdL-IRBLleida), Lleida, Spain.
| | - Consuelo Borras
- Freshage Research Group-Department of Physiology, Faculty of Medicine, University of Valencia, CIBERFES, INCLIVA, Spain.
| | - Mariona Jové
- Department of Experimental Medicine, University of Lleida-Institute for Research in Biomedicine of Lleida (UdL-IRBLleida), Lleida, Spain
| | - Irene Pradas
- Department of Experimental Medicine, University of Lleida-Institute for Research in Biomedicine of Lleida (UdL-IRBLleida), Lleida, Spain
| | - Isidre Ferrer
- Department of Pathology and Experimental Therapeutics, University of Barcelona, Bellvitge University Hospital, L'Hospitalet de Llobregat, Barcelona, Spain; Center for Biomedical Research on Neurodegenerative Diseases (CIBERNED), ISCIII, Spain
| | - Jose Viña
- Freshage Research Group-Department of Physiology, Faculty of Medicine, University of Valencia, CIBERFES, INCLIVA, Spain
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Zhang J, Zhang W, Gao X, Zhao Y, Chen D, Xu N, Pu H, Stetler RA, Gao Y. Preconditioning with partial caloric restriction confers long-term protection against grey and white matter injury after transient focal ischemia. J Cereb Blood Flow Metab 2019; 39:1394-1409. [PMID: 29972653 PMCID: PMC6668518 DOI: 10.1177/0271678x18785480] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Caloric restriction (CR) has been extensively examined as a preventative strategy against aging and various diseases, but CR effects on cerebral ischemia are largely unknown. We subjected C57BL6/J mice to ad libitum food access (LF) or a diet restricted to 70% of ad libitum food access (RF) for two to four weeks followed by 60 min of transient focal ischemia (tFCI). RF for four weeks protected against subsequent tFCI-induced infarct. RF improved sensorimotor function after stroke in the foot fault and corner tests, as well as performance in the Morris water maze test. In addition, RF preserved ischemic white matter tract integrity assessed by histology and compound action potential. Sirt1 and Sirt3 were both upregulated in RF ischemic brain, but heterozygous deletion of Sirt1 or knockout of Sirt3 did not alter the protection induced by RF against ischemic injury. RF induced significant release of adiponectin, a hormone related to glucose metabolism. Knockout of adiponectin decreased RF-induced protection after tFCI. These data demonstrate the novel finding that white matter, as well as neurons, benefit from CR prior to cerebral ischemic injury, and that adiponectin may contribute to these protective effects.
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Affiliation(s)
- Jia Zhang
- 1 State Key Laboratory of Medical Neurobiology and Institutes of Brain Science, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Wenting Zhang
- 1 State Key Laboratory of Medical Neurobiology and Institutes of Brain Science, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Xuguang Gao
- 1 State Key Laboratory of Medical Neurobiology and Institutes of Brain Science, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Yongfang Zhao
- 1 State Key Laboratory of Medical Neurobiology and Institutes of Brain Science, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Di Chen
- 1 State Key Laboratory of Medical Neurobiology and Institutes of Brain Science, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Na Xu
- 1 State Key Laboratory of Medical Neurobiology and Institutes of Brain Science, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China.,2 Pittsburgh Institute for Brain Disease and Recovery (PIBDR) and the Department of Neurology, University of Pittsburgh, Pittsburgh PA, USA
| | - Hongjian Pu
- 1 State Key Laboratory of Medical Neurobiology and Institutes of Brain Science, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China.,2 Pittsburgh Institute for Brain Disease and Recovery (PIBDR) and the Department of Neurology, University of Pittsburgh, Pittsburgh PA, USA
| | - R Anne Stetler
- 1 State Key Laboratory of Medical Neurobiology and Institutes of Brain Science, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Yanqin Gao
- 1 State Key Laboratory of Medical Neurobiology and Institutes of Brain Science, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China.,2 Pittsburgh Institute for Brain Disease and Recovery (PIBDR) and the Department of Neurology, University of Pittsburgh, Pittsburgh PA, USA
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14
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Hamezah HS, Durani LW, Yanagisawa D, Ibrahim NF, Aizat WM, Bellier JP, Makpol S, Ngah WZW, Damanhuri HA, Tooyama I. Proteome profiling in the hippocampus, medial prefrontal cortex, and striatum of aging rat. Exp Gerontol 2018; 111:53-64. [PMID: 29981398 DOI: 10.1016/j.exger.2018.07.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 06/28/2018] [Accepted: 07/01/2018] [Indexed: 01/03/2023]
Abstract
Decrease in multiple functions occurs in the brain with aging, all of which can contribute to age-related cognitive and locomotor impairments. Brain atrophy specifically in hippocampus, medial prefrontal cortex (mPFC), and striatum, can contribute to this age-associated decline in function. Our recent metabolomics analysis showed age-related changes in these brain regions. To further understand the aging processes, analysis using a proteomics approach was carried out. This study was conducted to identify proteome profiles in the hippocampus, mPFC, and striatum of 14-, 18-, 23-, and 27-month-old rats. Proteomics analysis using ultrahigh performance liquid chromatography coupled with Q Exactive HF Orbitrap mass spectrometry identified 1074 proteins in the hippocampus, 871 proteins in the mPFC, and 241 proteins in the striatum. Of these proteins, 97 in the hippocampus, 25 in mPFC, and 5 in striatum were differentially expressed with age. The altered proteins were classified into three ontologies (cellular component, molecular function, and biological process) containing 44, 38, and 35 functional groups in the hippocampus, mPFC, and striatum, respectively. Most of these altered proteins participate in oxidative phosphorylation (e.g. cytochrome c oxidase and ATP synthase), glutathione metabolism (e.g. peroxiredoxins), or calcium signaling pathway (e.g. protein S100B and calmodulin). The most prominent changes were observed in the oldest animals. These results suggest that alterations in oxidative phosphorylation, glutathione metabolism, and calcium signaling pathway are involved in cognitive and locomotor impairments in aging.
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Affiliation(s)
- Hamizah Shahirah Hamezah
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu 520-2192, Japan.
| | - Lina Wati Durani
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu 520-2192, Japan.
| | - Daijiro Yanagisawa
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu 520-2192, Japan.
| | - Nor Faeizah Ibrahim
- Department of Biochemistry, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Wan Mohd Aizat
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
| | - Jean Pierre Bellier
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu 520-2192, Japan.
| | - Suzana Makpol
- Department of Biochemistry, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Wan Zurinah Wan Ngah
- Department of Biochemistry, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Hanafi Ahmad Damanhuri
- Department of Biochemistry, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Ikuo Tooyama
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu 520-2192, Japan.
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15
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Dabbaghizadeh A, Morrow G, Amer YO, Chatelain EH, Pichaud N, Tanguay RM. Identification of proteins interacting with the mitochondrial small heat shock protein Hsp22 of Drosophila melanogaster: Implication in mitochondrial homeostasis. PLoS One 2018; 13:e0193771. [PMID: 29509794 PMCID: PMC5839585 DOI: 10.1371/journal.pone.0193771] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 02/16/2018] [Indexed: 12/17/2022] Open
Abstract
The small heat shock protein (sHsp) Hsp22 from Drosophila melanogaster (DmHsp22) is part of the family of sHsps in this diptera. This sHsp is characterized by its presence in the mitochondrial matrix as well as by its preferential expression during ageing. Although DmHsp22 has been demonstrated to be an efficient in vitro chaperone, its function within mitochondria in vivo remains largely unknown. Thus, determining its protein-interaction network (interactome) in the mitochondrial matrix would help to shed light on its function(s). In the present study we combined immunoaffinity conjugation (IAC) with mass spectroscopy analysis of mitochondria from HeLa cells transfected with DmHsp22 in non-heat shock condition and after heat shock (HS). 60 common DmHsp22-binding mitochondrial partners were detected in two independent IACs. Immunoblotting was used to validate interaction between DmHsp22 and two members of the mitochondrial chaperone machinery; Hsp60 and Hsp70. Among the partners of DmHsp22, several ATP synthase subunits were found. Moreover, we showed that expression of DmHsp22 in transiently transfected HeLa cells increased maximal mitochondrial oxygen consumption capacity and ATP contents, providing a mechanistic link between DmHsp22 and mitochondrial functions.
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Affiliation(s)
- Afrooz Dabbaghizadeh
- Laboratoire de Génétique Cellulaire et Développementale, IBIS and PROTEO, Département de Biologie Moléculaire, Biochimie Médicale et Pathologie, Faculté de Médecine, Université Laval, Québec, Canada
| | - Geneviève Morrow
- Laboratoire de Génétique Cellulaire et Développementale, IBIS and PROTEO, Département de Biologie Moléculaire, Biochimie Médicale et Pathologie, Faculté de Médecine, Université Laval, Québec, Canada
| | - Yasmine Ould Amer
- Laboratoire de Signalisation Mitochondriale, Département de Biologie, Université de Moncton, Moncton, NB, Canada
| | - Etienne Hebert Chatelain
- Laboratoire de Signalisation Mitochondriale, Département de Biologie, Université de Moncton, Moncton, NB, Canada
| | - Nicolas Pichaud
- Laboratoire de Biochimie et Physiologie Comparée, Département de Chimie et Biochimie, Université de Moncton, Moncton, NB, Canada
| | - Robert M Tanguay
- Laboratoire de Génétique Cellulaire et Développementale, IBIS and PROTEO, Département de Biologie Moléculaire, Biochimie Médicale et Pathologie, Faculté de Médecine, Université Laval, Québec, Canada
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16
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Kudryavtseva AV, Krasnov GS, Dmitriev AA, Alekseev BY, Kardymon OL, Sadritdinova AF, Fedorova MS, Pokrovsky AV, Melnikova NV, Kaprin AD, Moskalev AA, Snezhkina AV. Mitochondrial dysfunction and oxidative stress in aging and cancer. Oncotarget 2018; 7:44879-44905. [PMID: 27270647 PMCID: PMC5216692 DOI: 10.18632/oncotarget.9821] [Citation(s) in RCA: 337] [Impact Index Per Article: 56.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 05/28/2016] [Indexed: 12/16/2022] Open
Abstract
Aging and cancer are the most important issues to research. The population in the world is growing older, and the incidence of cancer increases with age. There is no doubt about the linkage between aging and cancer. However, the molecular mechanisms underlying this association are still unknown. Several lines of evidence suggest that the oxidative stress as a cause and/or consequence of the mitochondrial dysfunction is one of the main drivers of these processes. Increasing ROS levels and products of the oxidative stress, which occur in aging and age-related disorders, were also found in cancer. This review focuses on the similarities between ageing-associated and cancer-associated oxidative stress and mitochondrial dysfunction as their common phenotype.
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Affiliation(s)
- Anna V Kudryavtseva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.,National Medical Research Radiological Center, Ministry of Health of the Russian Federation, Moscow, Russia
| | - George S Krasnov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Alexey A Dmitriev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Boris Y Alekseev
- National Medical Research Radiological Center, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Olga L Kardymon
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Asiya F Sadritdinova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.,National Medical Research Radiological Center, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Maria S Fedorova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | | | - Nataliya V Melnikova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Andrey D Kaprin
- National Medical Research Radiological Center, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Alexey A Moskalev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.,Moscow Institute of Physics and Technology, Dolgoprudny, Russia
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17
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Filipović D, Costina V, Perić I, Stanisavljević A, Findeisen P. Chronic fluoxetine treatment directs energy metabolism towards the citric acid cycle and oxidative phosphorylation in rat hippocampal nonsynaptic mitochondria. Brain Res 2017; 1659:41-54. [DOI: 10.1016/j.brainres.2017.01.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 12/24/2016] [Accepted: 01/12/2017] [Indexed: 01/12/2023]
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18
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Role of DHA in aging-related changes in mouse brain synaptic plasma membrane proteome. Neurobiol Aging 2016; 41:73-85. [PMID: 27103520 DOI: 10.1016/j.neurobiolaging.2016.02.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 01/04/2016] [Accepted: 02/07/2016] [Indexed: 02/07/2023]
Abstract
Aging has been related to diminished cognitive function, which could be a result of ineffective synaptic function. We have previously shown that synaptic plasma membrane proteins supporting synaptic integrity and neurotransmission were downregulated in docosahexaenoic acid (DHA)-deprived brains, suggesting an important role of DHA in synaptic function. In this study, we demonstrate aging-induced synaptic proteome changes and DHA-dependent mitigation of such changes using mass spectrometry-based protein quantitation combined with western blot or messenger RNA analysis. We found significant reduction of 15 synaptic plasma membrane proteins in aging brains including fodrin-α, synaptopodin, postsynaptic density protein 95, synaptic vesicle glycoprotein 2B, synaptosomal-associated protein 25, synaptosomal-associated protein-α, N-methyl-D-aspartate receptor subunit epsilon-2 precursor, AMPA2, AP2, VGluT1, munc18-1, dynamin-1, vesicle-associated membrane protein 2, rab3A, and EAAT1, most of which are involved in synaptic transmission. Notably, the first 9 proteins were further reduced when brain DHA was depleted by diet, indicating that DHA plays an important role in sustaining these synaptic proteins downregulated during aging. Reduction of 2 of these proteins was reversed by raising the brain DHA level by supplementing aged animals with an omega-3 fatty acid sufficient diet for 2 months. The recognition memory compromised in DHA-depleted animals was also improved. Our results suggest a potential role of DHA in alleviating aging-associated cognitive decline by offsetting the loss of neurotransmission-regulating synaptic proteins involved in synaptic function.
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19
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Bernardi P, Di Lisa F, Fogolari F, Lippe G. From ATP to PTP and Back: A Dual Function for the Mitochondrial ATP Synthase. Circ Res 2015; 116:1850-62. [PMID: 25999424 DOI: 10.1161/circresaha.115.306557] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Mitochondria not only play a fundamental role in heart physiology but are also key effectors of dysfunction and death. This dual role assumes a new meaning after recent advances on the nature and regulation of the permeability transition pore, an inner membrane channel whose opening requires matrix Ca(2+) and is modulated by many effectors including reactive oxygen species, matrix cyclophilin D, Pi (inorganic phosphate), and matrix pH. The recent demonstration that the F-ATP synthase can reversibly undergo a Ca(2+)-dependent transition to form a channel that mediates the permeability transition opens new perspectives to the field. These findings demand a reassessment of the modifications of F-ATP synthase that take place in the heart under pathological conditions and of their potential role in determining the transition of F-ATP synthase from and energy-conserving into an energy-dissipating device.
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Affiliation(s)
- Paolo Bernardi
- From the Department of Biomedical Sciences, University of Padova, Italy (P.B., F.D.L.); and Department of Medical and Biological Sciences (F.F) and Department of Food Science (G.L.), University of Udine, Udine, Italy.
| | - Fabio Di Lisa
- From the Department of Biomedical Sciences, University of Padova, Italy (P.B., F.D.L.); and Department of Medical and Biological Sciences (F.F) and Department of Food Science (G.L.), University of Udine, Udine, Italy
| | - Federico Fogolari
- From the Department of Biomedical Sciences, University of Padova, Italy (P.B., F.D.L.); and Department of Medical and Biological Sciences (F.F) and Department of Food Science (G.L.), University of Udine, Udine, Italy
| | - Giovanna Lippe
- From the Department of Biomedical Sciences, University of Padova, Italy (P.B., F.D.L.); and Department of Medical and Biological Sciences (F.F) and Department of Food Science (G.L.), University of Udine, Udine, Italy
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20
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Ruiz-Perera L, Muniz M, Vierci G, Bornia N, Baroncelli L, Sale A, Rossi FM. Fluoxetine increases plasticity and modulates the proteomic profile in the adult mouse visual cortex. Sci Rep 2015. [PMID: 26205348 PMCID: PMC4513348 DOI: 10.1038/srep12517] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The scarce functional recovery of the adult CNS following injuries or diseases is largely due to its reduced potential for plasticity, the ability to reorganize neural connections as a function of experience. Recently, some new strategies restoring high levels of plasticity in the adult brain have been identified, especially in the paradigmatic model of the visual system. A chronic treatment with the anti-depressant fluoxetine reinstates plasticity in the adult rat primary visual cortex, inducing recovery of vision in amblyopic animals. The molecular mechanisms underlying this effect remain largely unknown. Here, we explored fluoxetine effects on mouse visual cortical plasticity, and exploited a proteomic approach to identify possible candidates mediating the outcome of the antidepressant treatment on adult cortical plasticity. We showed that fluoxetine restores ocular dominance plasticity in the adult mouse visual cortex, and identified 31 differentially expressed protein spots in fluoxetine-treated animals vs. controls. MALDITOF/TOF mass spectrometry identification followed by bioinformatics analysis revealed that these proteins are involved in the control of cytoskeleton organization, endocytosis, molecular transport, intracellular signaling, redox cellular state, metabolism and protein degradation. Altogether, these results indicate a complex effect of fluoxetine on neuronal signaling mechanisms potentially involved in restoring plasticity in the adult brain.
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Affiliation(s)
- L Ruiz-Perera
- Laboratorio de Neurociencias "Neuroplasticity Unit", Facultad de Ciencias, UdelaR, Montevideo, Uruguay
| | - M Muniz
- Laboratorio de Neurociencias "Neuroplasticity Unit", Facultad de Ciencias, UdelaR, Montevideo, Uruguay
| | - G Vierci
- Laboratorio de Neurociencias "Neuroplasticity Unit", Facultad de Ciencias, UdelaR, Montevideo, Uruguay
| | - N Bornia
- Laboratorio de Neurociencias "Neuroplasticity Unit", Facultad de Ciencias, UdelaR, Montevideo, Uruguay
| | - L Baroncelli
- Institute of Neuroscience, Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - A Sale
- Institute of Neuroscience, Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - F M Rossi
- Laboratorio de Neurociencias "Neuroplasticity Unit", Facultad de Ciencias, UdelaR, Montevideo, Uruguay
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21
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Triplett JC, Swomley A, Kirk J, Lewis K, Orr M, Rodriguez K, Cai J, Klein JB, Buffenstein R, Butterfield DA. Metabolic clues to salubrious longevity in the brain of the longest-lived rodent: the naked mole-rat. J Neurochem 2015; 134:538-50. [PMID: 25940666 DOI: 10.1111/jnc.13149] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 04/13/2015] [Accepted: 04/23/2015] [Indexed: 12/16/2022]
Abstract
Naked mole-rats (NMRs) are the oldest-living rodent species. Living underground in a thermally stable ecological niche, NMRs have evolved certain exceptional traits, resulting in sustained health spans, negligible cognitive decline, and a pronounced resistance to age-related disease. Uncovering insights into mechanisms underlying these extraordinary traits involved in successful aging may conceivably provide crucial clues to extend the human life span and health span. One of the most fundamental processes inside the cell is the production of ATP, which is an essential fuel in driving all other energy-requiring cellular activities. Not surprisingly, a prominent hallmark in age-related diseases, such as neurodegeneration and cancer, is the impairment and dysregulation of metabolic pathways. Using a two-dimensional polyacrylamide gel electrophoresis proteomics approach, alterations in expression and phosphorylation levels of metabolic proteins in the brains of NMRs, aged 2-24 years, were evaluated in an age-dependent manner. We identified 13 proteins with altered levels and/or phosphorylation states that play key roles in various metabolic pathways including glycolysis, β-oxidation, the malate-aspartate shuttle, the Tricarboxylic Acid Cycle (TCA) cycle, the electron transport chain, NADPH production, as well as the production of glutamate. New insights into potential pathways involved in metabolic aspects of successful aging have been obtained by the identification of key proteins through which the NMR brain responds and adapts to the aging process and how the NMR brain adapted to resist age-related degeneration. This study examines the changes in the proteome and phosphoproteome in the brain of the naked mole-rat aged 2-24 years. We identified 13 proteins (labeled in red) with altered expression and/or phosphorylation levels that are conceivably associated with sustained metabolic functions in the oldest NMRs that may promote a sustained health span and life span.
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Affiliation(s)
- Judy C Triplett
- Department of Chemistry, University of Kentucky, Lexington, Kentucky, USA
| | - Aaron Swomley
- Department of Chemistry, University of Kentucky, Lexington, Kentucky, USA
| | - Jessime Kirk
- Department of Chemistry, University of Kentucky, Lexington, Kentucky, USA
| | - Katilyn Lewis
- Sam and Ann Barsop Institute for Longevity and Aging Studies, University of Texas Health Science Center, San Antonio, Texas, USA.,Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, Texas, USA
| | - Miranda Orr
- Sam and Ann Barsop Institute for Longevity and Aging Studies, University of Texas Health Science Center, San Antonio, Texas, USA.,Department of Physiology, University of Texas Health Science Center, San Antonio, Texas, USA
| | - Karl Rodriguez
- Sam and Ann Barsop Institute for Longevity and Aging Studies, University of Texas Health Science Center, San Antonio, Texas, USA.,Department of Physiology, University of Texas Health Science Center, San Antonio, Texas, USA
| | - Jian Cai
- Department of Nephrology and Proteomics Center, University of Louisville, Louisville, Kentucky, USA
| | - Jon B Klein
- Department of Nephrology and Proteomics Center, University of Louisville, Louisville, Kentucky, USA
| | - Rochelle Buffenstein
- Sam and Ann Barsop Institute for Longevity and Aging Studies, University of Texas Health Science Center, San Antonio, Texas, USA.,Department of Physiology, University of Texas Health Science Center, San Antonio, Texas, USA
| | - D Allan Butterfield
- Department of Chemistry, University of Kentucky, Lexington, Kentucky, USA.,Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, USA
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22
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Yan WW, Chen GH, Wang F, Tong JJ, Tao F. Long-term acarbose administration alleviating the impairment of spatial learning and memory in the SAMP8 mice was associated with alleviated reduction of insulin system and acetylated H4K8. Brain Res 2015; 1603:22-31. [PMID: 25645154 DOI: 10.1016/j.brainres.2015.01.042] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 01/20/2015] [Accepted: 01/23/2015] [Indexed: 12/14/2022]
Abstract
Age-associated memory impairment (AAMI) not only reduces the quality of life for the elderly but also increases the costs of healthcare for society. Methods that can regulate glucose metabolism, insulin/insulin-like growth factor 1 (IGF-1) system and acetylated histone H4 lysine 8 (H4K8ac), one of the most well-researched facets of histone acetylation modification associating with cognition, tend to ameliorate the AAMI. Here, we used SAMP8 mice, the excellent animal model of aging and AAMI, to study the effect of long-term treatment with acarbose, an inhibitor of a-glucosidase, on AAMI and explore whether blood glucose, insulin/IGF-1 system and H4K8ac are associated with potential effects. The treatment group received acarbose (20mg/kg/d, dissolved in drinking water) at the age of 3-month until 9-month old before the behavioral test, and the controls only received water. Compared to the young controls (3-month-old, n=11), the old group (9-month-old, n=8) had declined abilities of spatial learning and memory and levels of serum insulin, hippocampal insulin receptors (InsRs) and H4K8ac. Interestingly, the acarbose group (9-month-old, n=9) showed better abilities of spatial learning and memory and higher levels of insulin, InsRs and H4K8ac relative to the old controls. Good performance of spatial learning and memory was positively correlated with the elevated insulin, InsRs and H4K8ac. All these results suggested that long-term administration of acarbose could alleviate the age-related impairment of spatial learning and memory in the SAMP8 mice, and the alleviated reduction of an insulin system and H4K8ac might be associated with the alleviation.
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Affiliation(s)
- Wen-Wen Yan
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, PR China
| | - Gui-Hai Chen
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, PR China; Department of Neurology, The First People׳s Hospital of Chenzhou, Southern Medical University, Chenzhou 423000, Hunan Province, PR China.
| | - Fang Wang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, PR China
| | - Jing-Jing Tong
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, PR China
| | - Fei Tao
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, PR China
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23
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Pandya JD, Grondin R, Yonutas HM, Haghnazar H, Gash DM, Zhang Z, Sullivan PG. Decreased mitochondrial bioenergetics and calcium buffering capacity in the basal ganglia correlates with motor deficits in a nonhuman primate model of aging. Neurobiol Aging 2015; 36:1903-13. [PMID: 25726361 DOI: 10.1016/j.neurobiolaging.2015.01.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 12/24/2014] [Accepted: 01/23/2015] [Indexed: 01/02/2023]
Abstract
Altered mitochondrial function in the basal ganglia has been hypothesized to underlie cellular senescence and promote age-related motor decline. We tested this hypothesis in a nonhuman primate model of human aging. Six young (6-8 years old) and 6 aged (20-25 years old) female Rhesus monkeys (Macaca mulatta) were behaviorally characterized from standardized video records. Additionally, we measured mitochondrial bioenergetics along with calcium buffering capacity in the substantia nigra and putamen (PUT) from both age groups. Our results demonstrate that the aged animals had significantly reduced locomotor activity and movement speed compared with younger animals. Moreover, aged monkeys had significantly reduced ATP synthesis capacity (in substantia nigra and PUT), reduced pyruvate dehydrogenase activity (in PUT), and reduced calcium buffering capacity (in PUT) compared with younger animals. Furthermore, this age-related decline in mitochondrial function in the basal ganglia correlated with decline in motor function. Overall, our results suggest that drug therapies designed to enhance altered mitochondrial function may help improve motor deficits in the elderly.
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Affiliation(s)
- Jignesh D Pandya
- Spinal Cord and Brain Injury Research Center, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA; Department of Anatomy and Neurobiology, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA
| | - Richard Grondin
- Department of Anatomy and Neurobiology, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA
| | - Heather M Yonutas
- Spinal Cord and Brain Injury Research Center, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA; Department of Anatomy and Neurobiology, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA
| | - Hamed Haghnazar
- Department of Anatomy and Neurobiology, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA
| | - Don M Gash
- Department of Anatomy and Neurobiology, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA
| | - Zhiming Zhang
- Department of Anatomy and Neurobiology, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA
| | - Patrick G Sullivan
- Spinal Cord and Brain Injury Research Center, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA; Department of Anatomy and Neurobiology, The University of Kentucky Chandler College of Medicine, Lexington, KY, USA.
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24
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Abstract
Although major research efforts have focused on how specific components of foodstuffs affect health, relatively little is known about a more fundamental aspect of diet, the frequency and circadian timing of meals, and potential benefits of intermittent periods with no or very low energy intakes. The most common eating pattern in modern societies, three meals plus snacks every day, is abnormal from an evolutionary perspective. Emerging findings from studies of animal models and human subjects suggest that intermittent energy restriction periods of as little as 16 h can improve health indicators and counteract disease processes. The mechanisms involve a metabolic shift to fat metabolism and ketone production, and stimulation of adaptive cellular stress responses that prevent and repair molecular damage. As data on the optimal frequency and timing of meals crystalizes, it will be critical to develop strategies to incorporate those eating patterns into health care policy and practice, and the lifestyles of the population.
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25
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Cenini G, Fiorini A, Sultana R, Perluigi M, Cai J, Klein JB, Head E, Butterfield DA. An investigation of the molecular mechanisms engaged before and after the development of Alzheimer disease neuropathology in Down syndrome: a proteomics approach. Free Radic Biol Med 2014; 76:89-95. [PMID: 25151119 PMCID: PMC4252833 DOI: 10.1016/j.freeradbiomed.2014.08.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 07/29/2014] [Accepted: 08/01/2014] [Indexed: 02/08/2023]
Abstract
Down syndrome (DS) is one of the most common causes of intellectual disability, owing to trisomy of all or part of chromosome 21. DS is also associated with the development of Alzheimer disease (AD) neuropathology after the age of 40 years. To better clarify the cellular and metabolic pathways that could contribute to the differences in DS brain, in particular those involved in the onset of neurodegeneration, we analyzed the frontal cortex of DS subjects with or without significant AD pathology in comparison with age-matched controls, using a proteomics approach. Proteomics represents an advantageous tool to investigate the molecular mechanisms underlying the disease. From these analyses, we investigated the effects that age, DS, and AD neuropathology could have on protein expression levels. Our results show overlapping and independent molecular pathways (including energy metabolism, oxidative damage, protein synthesis, and autophagy) contributing to DS, to aging, and to the presence of AD pathology in DS. Investigation of pathomechanisms involved in DS with AD may provide putative targets for therapeutic approaches to slow the development of AD.
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Affiliation(s)
- Giovanna Cenini
- Department of Chemistry, Center of Membrane Sciences, and Sanders-Brown Center on Aging, and
| | - Ada Fiorini
- Department of Chemistry, Center of Membrane Sciences, and Sanders-Brown Center on Aging, and; Department of Biochemical Sciences, Sapienza University of Rome, 00185 Rome, Italy
| | - Rukhsana Sultana
- Department of Chemistry, Center of Membrane Sciences, and Sanders-Brown Center on Aging, and
| | - Marzia Perluigi
- Department of Biochemical Sciences, Sapienza University of Rome, 00185 Rome, Italy
| | - Jian Cai
- Division of Nephrology, Department of Medicine and Proteomics Center, University of Louisville, Louisville, KY 40292, USA
| | - Jon B Klein
- Division of Nephrology, Department of Medicine and Proteomics Center, University of Louisville, Louisville, KY 40292, USA
| | - Elizabeth Head
- Department of Molecular and Biomedical Pharmacology and Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
| | - D Allan Butterfield
- Department of Chemistry, Center of Membrane Sciences, and Sanders-Brown Center on Aging, and.
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Di Domenico F, Barone E, Perluigi M, Butterfield DA. Strategy to reduce free radical species in Alzheimer’s disease: an update of selected antioxidants. Expert Rev Neurother 2014; 15:19-40. [DOI: 10.1586/14737175.2015.955853] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Li X, Zhao W, Yang H, Zhang J, Ma J. S14G-humanin restored cellular homeostasis disturbed by amyloid-beta protein. Neural Regen Res 2014; 8:2573-80. [PMID: 25206568 PMCID: PMC4145930 DOI: 10.3969/j.issn.1673-5374.2013.27.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 08/25/2013] [Indexed: 11/22/2022] Open
Abstract
Humanin is a potential therapeutic agent for Alzheimer's disease, and its derivative, S14G-humanin, is 1 000-fold stronger in its neuroprotective effect against Alzheimer's disease-relevant insults. Al-though effective, the detailed molecular mechanism through which S14G-humanin exerts its effects remains unclear. Data from this study showed that fibrillar amyloid-beta 40 disturbed cellular ho-meostasis through the cell membrane, increasing intracellular calcium, generating reactive oxygen species, and decreasing the mitochondrial membrane potential. S14G-humanin restored these responses. The results suggested that S14G-humanin blocked the effects of amyloid-beta 40 on the neuronal cell membrane, and restored the disturbed cellular homeostasis, thereby exerting a neu-roprotective effect on hippocampal neurons.
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Affiliation(s)
- Xue Li
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou 450003, Henan Province, China ; Department of Neurology, People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, China
| | - Wencong Zhao
- Department of Pharmacology, Zhengzhou Maternal and Child Health Hospital, Zhengzhou 450012, Henan Province, China
| | - Hongqi Yang
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou 450003, Henan Province, China ; Department of Neurology, People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, China
| | - Junhong Zhang
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou 450003, Henan Province, China ; Department of Neurology, People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, China
| | - Jianjun Ma
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou 450003, Henan Province, China ; Department of Neurology, People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, China
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Butterfield DA, Gu L, Di Domenico F, Robinson RAS. Mass spectrometry and redox proteomics: applications in disease. MASS SPECTROMETRY REVIEWS 2014; 33:277-301. [PMID: 24930952 DOI: 10.1002/mas.21374] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 02/07/2013] [Accepted: 02/07/2013] [Indexed: 06/03/2023]
Abstract
Proteomics techniques are continuously being developed to further understanding of biology and disease. Many of the pathways that are relevant to disease mechanisms rely on the identification of post-translational modifications (PTMs) such as phosphorylation, acetylation, and glycosylation. Much attention has also been focused on oxidative PTMs which include protein carbonyls, protein nitration, and the incorporation of fatty acids and advanced glycation products to amino acid side chains, amongst others. The introduction of these PTMs in the cell can occur due to the attack of reactive oxygen and nitrogen species (ROS and RNS, respectively) on proteins. ROS and RNS can be present as a result of normal metabolic processes as well as external factors such as UV radiation, disease, and environmental toxins. The imbalance of ROS and RNS with antioxidant cellular defenses leads to a state of oxidative stress, which has been implicated in many diseases. Redox proteomics techniques have been used to characterize oxidative PTMs that result as a part of normal cell signaling processes as well as oxidative stress conditions. This review highlights many of the redox proteomics techniques which are currently available for several oxidative PTMs and brings to the reader's attention the application of redox proteomics for understanding disease pathogenesis in neurodegenerative disorders and others such as cancer, kidney, and heart diseases.
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Affiliation(s)
- D Allan Butterfield
- Department of Chemistry, Center of Membrane Sciences, Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, 40506
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29
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Metabolomics of Human Brain Aging and Age-Related Neurodegenerative Diseases. J Neuropathol Exp Neurol 2014; 73:640-57. [DOI: 10.1097/nen.0000000000000091] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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30
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Recent updates on drug abuse analyzed by neuroproteomics studies: Cocaine, Methamphetamine and MDMA. TRANSLATIONAL PROTEOMICS 2014. [DOI: 10.1016/j.trprot.2014.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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Antoniel M, Giorgio V, Fogolari F, Glick GD, Bernardi P, Lippe G. The oligomycin-sensitivity conferring protein of mitochondrial ATP synthase: emerging new roles in mitochondrial pathophysiology. Int J Mol Sci 2014; 15:7513-36. [PMID: 24786291 PMCID: PMC4057687 DOI: 10.3390/ijms15057513] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 04/18/2014] [Accepted: 04/21/2014] [Indexed: 01/08/2023] Open
Abstract
The oligomycin-sensitivity conferring protein (OSCP) of the mitochondrial F(O)F1 ATP synthase has long been recognized to be essential for the coupling of proton transport to ATP synthesis. Located on top of the catalytic F1 sector, it makes stable contacts with both F1 and the peripheral stalk, ensuring the structural and functional coupling between F(O) and F1, which is disrupted by the antibiotic, oligomycin. Recent data have established that OSCP is the binding target of cyclophilin (CyP) D, a well-characterized inducer of the mitochondrial permeability transition pore (PTP), whose opening can precipitate cell death. CyPD binding affects ATP synthase activity, and most importantly, it decreases the threshold matrix Ca²⁺ required for PTP opening, in striking analogy with benzodiazepine 423, an apoptosis-inducing agent that also binds OSCP. These findings are consistent with the demonstration that dimers of ATP synthase generate Ca²⁺-dependent currents with features indistinguishable from those of the PTP and suggest that ATP synthase is directly involved in PTP formation, although the underlying mechanism remains to be established. In this scenario, OSCP appears to play a fundamental role, sensing the signal(s) that switches the enzyme of life in a channel able to precipitate cell death.
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Affiliation(s)
- Manuela Antoniel
- Department of Biomedical Sciences, University of Padova, via Ugo Bassi 58/B, 35121 Padua, Italy.
| | - Valentina Giorgio
- Department of Biomedical Sciences, University of Padova, via Ugo Bassi 58/B, 35121 Padua, Italy.
| | - Federico Fogolari
- Department of Biomedical Sciences, University of Udine, p.le Kolbe, 33100 Udine, Italy.
| | - Gary D Glick
- Department of Chemistry, Graduate Program in Immunology, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Paolo Bernardi
- Department of Biomedical Sciences, University of Padova, via Ugo Bassi 58/B, 35121 Padua, Italy.
| | - Giovanna Lippe
- Department of Food Science, University of Udine, via Sondrio 2/A, 33100 Udine, Italy.
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Abstract
The scope of the current paper is to review existing and potential applications of proteomic analysis to aging research. The focus will lie on the unique opportunities of high-throughput studies for uncovering specific alterations in protein expression, protein complexes or protein modifications caused by biological aging. The result of such studies will outline aging phenotypes and potentially indicate pathways involved in the pathogenesis of age-associated disfunctions. Specific attention is paid to the illustrations of successful applications of proteomic technologies and potential applications of new proteomic concepts to biogerontological studies.
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Affiliation(s)
- Victor S Sharov
- University of Kansas, Pharmaceutical Chemistry Department, Lawrence, KS 66047, USA.
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Pienaar IS, Dexter DT, Burkhard PR. Mitochondrial proteomics as a selective tool for unraveling Parkinson’s disease pathogenesis. Expert Rev Proteomics 2014; 7:205-26. [DOI: 10.1586/epr.10.8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Redox proteomics and the dynamic molecular landscape of the aging brain. Ageing Res Rev 2014; 13:75-89. [PMID: 24374232 DOI: 10.1016/j.arr.2013.12.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 12/04/2013] [Accepted: 12/16/2013] [Indexed: 12/13/2022]
Abstract
It is well established that the risk to develop neurodegenerative disorders increases with chronological aging. Accumulating studies contributed to characterize the age-dependent changes either at gene and protein expression level which, taken together, show that aging of the human brain results from the combination of the normal decline of multiple biological functions with environmental factors that contribute to defining disease risk of late-life brain disorders. Finding the "way out" of the labyrinth of such complex molecular interactions may help to fill the gap between "normal" brain aging and development of age-dependent diseases. To this purpose, proteomics studies are a powerful tool to better understand where to set the boundary line of healthy aging and age-related disease by analyzing the variation of protein expression levels and the major post translational modifications that determine "protein" physio/pathological fate. Increasing attention has been focused on oxidative modifications due to the crucial role of oxidative stress in aging, in addition to the fact that this type of modification is irreversible and may alter protein function. Redox proteomics studies contributed to decipher the complexity of brain aging by identifying the proteins that were increasingly oxidized and eventually dysfunctional as a function of age. The purpose of this review is to summarize the most important findings obtained by applying proteomics approaches to murine models of aging with also a brief overview of some human studies, in particular those related to dementia.
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Cabiscol E, Tamarit J, Ros J. Protein carbonylation: proteomics, specificity and relevance to aging. MASS SPECTROMETRY REVIEWS 2014; 33:21-48. [PMID: 24114980 DOI: 10.1002/mas.21375] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 02/13/2013] [Accepted: 02/13/2013] [Indexed: 06/02/2023]
Abstract
Detection and quantification of protein carbonyls present in biological samples has become a popular, albeit indirect, method to determine the existence of oxidative stress. Moreover, the rise of proteomics has allowed the identification of the specific proteins targeted by protein carbonylation. This review discusses these methodologies and proteomic strategies and then focuses on the relationship between protein carbonylation and aging and the parameters that may explain the increased sensitivity of certain proteins to protein carbonylation.
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Affiliation(s)
- Elisa Cabiscol
- Departament de Ciències Mèdiques Bàsiques, IRB Lleida, Universitat de Lleida, Av. Rovira Roure, 80, 25198, Lleida, Catalonia, Spain
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36
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Keeney JTR, Förster S, Sultana R, Brewer LD, Latimer CS, Cai J, Klein JB, Porter NM, Butterfield DA. Dietary vitamin D deficiency in rats from middle to old age leads to elevated tyrosine nitration and proteomics changes in levels of key proteins in brain: implications for low vitamin D-dependent age-related cognitive decline. Free Radic Biol Med 2013; 65:324-334. [PMID: 23872023 PMCID: PMC3859828 DOI: 10.1016/j.freeradbiomed.2013.07.019] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 07/10/2013] [Accepted: 07/11/2013] [Indexed: 12/22/2022]
Abstract
In addition to the well-known effects of vitamin D (VitD) in maintaining bone health, there is increasing appreciation that this vitamin may serve important roles in other organs and tissues, including the brain. Given that VitD deficiency is especially widespread among the elderly, it is important to understand how the range of serum VitD levels that mimic those found in humans (from low to high) affects the brain during aging from middle age to old age. To address this issue, 27 male F344 rats were split into three groups and fed isocaloric diets containing low (100 IU/kg food), control (1000 IU/kg food), or high (10,000 IU/kg food) VitD beginning at middle age (12 months) and continued for a period of 4-5 months. We compared the effects of these dietary VitD manipulations on oxidative and nitrosative stress measures in posterior brain cortices. The low-VitD group showed global elevation of 3-nitrotyrosine compared to control and high-VitD-treated groups. Further investigation showed that this elevation may involve dysregulation of the nuclear factor κ-light-chain enhancer of activated B cells (NF-κB) pathway and NF-κB-mediated transcription of inducible nitric oxide synthase (iNOS) as indicated by translocation of NF-κB to the nucleus and elevation of iNOS levels. Proteomics techniques were used to provide insight into potential mechanisms underlying these effects. Several brain proteins were found at significantly elevated levels in the low-VitD group compared to the control and high-VitD groups. Three of these proteins, 6-phosphofructokinase, triose phosphate isomerase, and pyruvate kinase, are involved directly in glycolysis. Two others, peroxiredoxin-3 and DJ-1/PARK7, have peroxidase activity and are found in mitochondria. Peptidyl-prolyl cis-trans isomerase A (cyclophilin A) has been shown to have multiple roles, including protein folding, regulation of protein kinases and phosphatases, immunoregulation, cell signaling, and redox status. Together, these results suggest that dietary VitD deficiency contributes to significant nitrosative stress in brain and may promote cognitive decline in middle-aged and elderly adults.
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Affiliation(s)
- Jeriel T R Keeney
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA
| | - Sarah Förster
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA
| | - Rukhsana Sultana
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA
| | - Lawrence D Brewer
- Department of Molecular and Biomedical Pharmacology, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - Caitlin S Latimer
- Department of Molecular and Biomedical Pharmacology, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - Jian Cai
- Division of Nephrology, Department of Medicine and Proteomics Center, University of Louisville, Louisville, KY 40292, USA
| | - Jon B Klein
- Division of Nephrology, Department of Medicine and Proteomics Center, University of Louisville, Louisville, KY 40292, USA
| | - Nada M Porter
- Department of Molecular and Biomedical Pharmacology, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - D Allan Butterfield
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA.
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Ottis P, Topic B, Loos M, Li KW, de Souza A, Schulz D, Smit AB, Huston JP, Korth C. Aging-induced proteostatic changes in the rat hippocampus identify ARP3, NEB2 and BRAG2 as a molecular circuitry for cognitive impairment. PLoS One 2013; 8:e75112. [PMID: 24069387 PMCID: PMC3777897 DOI: 10.1371/journal.pone.0075112] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 08/10/2013] [Indexed: 11/28/2022] Open
Abstract
Disturbed proteostasis as a particular phenotype of the aging organism has been advanced in C. elegans experiments and is also conceived to underlie neurodegenerative diseases in humans. Here, we investigated whether particular changes in non-disease related proteostasis can be identified in the aged mammalian brain, and whether a particular signature of aberrant proteostasis is related to behavioral performance of learning and memory. Young (adult, n = 30) and aged (2 years, n = 50) Wistar rats were tested in the Morris Water Maze (MWM) to distinguish superior and inferior performers. For both young and old rats, the best and worst performers in the MWM were selected and the insoluble proteome, termed aggregome, was purified from the hippocampus as evidence for aberrant proteostasis. Quantitative proteomics (iTRAQ) was performed. The aged inferior performers were considered as a model for spontaneous, age-associated cognitive impairment. Whereas variability of the insoluble proteome increased with age, absolute changes in the levels of insoluble proteins were small compared to the findings in the whole C. elegans insoluble proteome. However, we identified proteins with aberrant proteostasis in aging. For the cognitively impaired rats, we identified a changed molecular circuitry of proteins selectively involved in F-actin remodeling, synapse building and long-term depression: actin related protein 3 (ARP3), neurabin II (NEB2) and IQ motif and SEC7 domain-containing protein 1 (BRAG2). We demonstrate that aberrant proteostasis is a specific phenotype of brain aging in mammals. We identify a distinct molecular circuitry where changes in proteostasis are characteristic for poor learning and memory performance in the wild type, aged rat. Our findings 1. establish the search for aberrant proteostasis as a successful strategy to identify neuronal dysfunction in deficient cognitive behavior, 2. reveal a previously unknown functional network of proteins (ARP3, NEB2, BRAG2) involved in age-associated cognitive dysfunction.
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Affiliation(s)
- Philipp Ottis
- Department of Neuropathology, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Bianca Topic
- Center for Behavioral Neuroscience, Department Experimental Psychology, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Maarten Loos
- Department of Molecular and Cellular Neurobiology, Faculty of Earth and Life Sciences, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University, Amsterdam, The Netherlands
- Synaptologics B.V., Amsterdam, The Netherlands
| | - Ka Wan Li
- Department of Molecular and Cellular Neurobiology, Faculty of Earth and Life Sciences, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University, Amsterdam, The Netherlands
| | - Angelica de Souza
- Center for Behavioral Neuroscience, Department Experimental Psychology, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Daniela Schulz
- Center for Behavioral Neuroscience, Department Experimental Psychology, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - August B. Smit
- Department of Molecular and Cellular Neurobiology, Faculty of Earth and Life Sciences, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University, Amsterdam, The Netherlands
| | - Joseph P. Huston
- Center for Behavioral Neuroscience, Department Experimental Psychology, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Carsten Korth
- Department of Neuropathology, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
- * E-mail:
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Dorszewska J. Cell biology of normal brain aging: synaptic plasticity-cell death. Aging Clin Exp Res 2013; 25:25-34. [PMID: 23740630 DOI: 10.1007/s40520-013-0004-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 01/23/2012] [Indexed: 11/25/2022]
Abstract
Senescence of the brain seems to be related to increased levels of free oxygen radical (FOR). FOR may damage macromolecular compounds such as: proteins, lipids, and DNA. In the aging brain, increased FOR levels damage DNA, mitochondrial DNA (mtDNA), and nuclear DNA (nDNA). In DNA they damage single and double strands, leading to mutations in mtDNA and nDNA. Damage to mtDNA seems to result in decay of mitochondria, decreased production of ATP, and in the activation of the apoptotic process. In the aging brain, apoptosis does not seem to be activated in wild-type p53-expressing cells because the elevated levels of the p53 protein are no longer accompanied by decreased levels of the Bcl-2 protein and increased levels of the Bax protein. It seems that, in the aging brain, changes in the metabolism of neurons may lead to their decreased numbers in the cerebral and cerebellar cortex, hippocampus, basal nucleus of Meynert, locus ceruleus, and substantia nigra, as well as to decreased numbers of synapses and disturbed stimulation of synaptic plasticity in the senescent brain. Simultaneously, a decrease in neurogenesis in the aging brain may lead to a decline in the maintenance of tissue integrity, function, and regenerative response. Environmental enrichment and physical activity may improve hippocampal neurogenesis and induce neuronal plasticity. The morphological lesions in the senescent brain are undoubtedly followed by a disturbed balance between various types of neurons in the CNS. Nevertheless, the high plasticity of the CNS in humans most probably does not allow for the development of abnormalities in higher functions.
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Affiliation(s)
- Jolanta Dorszewska
- Laboratory of Neurobiology, Department of Neurology, Poznan University of Medical Sciences, 49, Przybyszewskiego St, 60-355, Poznan, Poland.
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VanGuilder HD, Bixler GV, Sonntag WE, Freeman WM. Hippocampal expression of myelin-associated inhibitors is induced with age-related cognitive decline and correlates with deficits of spatial learning and memory. J Neurochem 2012; 121:77-98. [PMID: 22269040 PMCID: PMC3341628 DOI: 10.1111/j.1471-4159.2012.07671.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Impairment of cognitive functions including hippocampus-dependent spatial learning and memory affects nearly half of the aged population. Age-related cognitive decline is associated with synaptic dysfunction that occurs in the absence of neuronal cell loss, suggesting that impaired neuronal signaling and plasticity may underlie age-related deficits of cognitive function. Expression of myelin-associated inhibitors (MAIs) of synaptic plasticity, including the ligands myelin-associated glycoprotein, neurite outgrowth inhibitor A, and oligodendrocyte myelin glycoprotein, and their common receptor, Nogo-66 receptor, was examined in hippocampal synaptosomes and Cornu ammonis area (CA)1, CA3 and dentate gyrus subregions derived from adult (12-13 months) and aged (26-28 months) Fischer 344 × Brown Norway rats. Rats were behaviorally phenotyped by Morris water maze testing and classified as aged cognitively intact (n = 7-8) or aged cognitively impaired (n = 7-10) relative to adults (n = 5-7). MAI protein expression was induced in cognitively impaired, but not cognitively intact, aged rats and correlated with cognitive performance in individual rats. Immunohistochemical experiments demonstrated that up-regulation of MAIs occurs, in part, in hippocampal neuronal axons and somata. While a number of pathways and processes are altered with brain aging, we report a coordinated induction of myelin-associated inhibitors of functional and structural plasticity only in cognitively impaired aged rats. Induction of MAIs may decrease stimulus-induced synaptic strengthening and structural remodeling, ultimately impairing synaptic mechanisms of spatial learning and memory and resulting in cognitive decline.
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Affiliation(s)
- Heather D. VanGuilder
- Department of Pharmacology, R130, Hershey Center for Applied Research, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033 USA
| | - Georgina V. Bixler
- Department of Pharmacology, R130, Hershey Center for Applied Research, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033 USA
| | - William E. Sonntag
- Donald W. Reynolds Department of Geriatric Medicine, University of Oklahoma Health Science Center, 975 NE 10th Street, BRC-1303, Oklahoma City OK 73104 USA
| | - Willard M. Freeman
- Department of Pharmacology, R130, Hershey Center for Applied Research, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033 USA
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Kim HJ, Ji BR, Kim JS, Lee HN, Ha DH, Kim CW. Proteomic analysis of proteins associated with cellular senescence by calorie restriction in mesenchymal stem cells. In Vitro Cell Dev Biol Anim 2012; 48:186-95. [DOI: 10.1007/s11626-012-9485-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 01/06/2012] [Indexed: 01/01/2023]
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41
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VanGuilder HD, Bixler GV, Brucklacher RM, Farley JA, Yan H, Warrington JP, Sonntag WE, Freeman WM. Concurrent hippocampal induction of MHC II pathway components and glial activation with advanced aging is not correlated with cognitive impairment. J Neuroinflammation 2011; 8:138. [PMID: 21989322 PMCID: PMC3216278 DOI: 10.1186/1742-2094-8-138] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Accepted: 10/11/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Age-related cognitive dysfunction, including impairment of hippocampus-dependent spatial learning and memory, affects approximately half of the aged population. Induction of a variety of neuroinflammatory measures has been reported with brain aging but the relationship between neuroinflammation and cognitive decline with non-neurodegenerative, normative aging remains largely unexplored. This study sought to comprehensively investigate expression of the MHC II immune response pathway and glial activation in the hippocampus in the context of both aging and age-related cognitive decline. METHODS Three independent cohorts of adult (12-13 months) and aged (26-28 months) F344xBN rats were behaviorally characterized by Morris water maze testing. Expression of MHC II pathway-associated genes identified by transcriptomic analysis as upregulated with advanced aging was quantified by qPCR in synaptosomal fractions derived from whole hippocampus and in hippocampal subregion dissections (CA1, CA3, and DG). Activation of astrocytes and microglia was assessed by GFAP and Iba1 protein expression, and by immunohistochemical visualization of GFAP and both CD74 (Ox6) and Iba1. RESULTS We report a marked age-related induction of neuroinflammatory signaling transcripts (i.e., MHC II components, toll-like receptors, complement, and downstream signaling factors) throughout the hippocampus in all aged rats regardless of cognitive status. Astrocyte and microglial activation was evident in CA1, CA3 and DG of intact and impaired aged rat groups, in the absence of differences in total numbers of GFAP+ astrocytes or Iba1+ microglia. Both mild and moderate microglial activation was significantly increased in all three hippocampal subregions in aged cognitively intact and cognitively impaired rats compared to adults. Neither induction of MHCII pathway gene expression nor glial activation correlated to cognitive performance. CONCLUSIONS These data demonstrate a novel, coordinated age-related induction of the MHC II immune response pathway and glial activation in the hippocampus, indicating an allostatic shift toward a para-inflammatory phenotype with advancing age. Our findings demonstrate that age-related induction of these aspects of hippocampal neuroinflammation, while a potential contributing factor, is not sufficient by itself to elicit impairment of spatial learning and memory in models of normative aging. Future efforts are needed to understand how neuroinflammation may act synergistically with cognitive-decline specific alterations to cause cognitive impairment.
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Affiliation(s)
- Heather D VanGuilder
- Department of Pharmacology, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, Pennsylvania 17057, USA
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Robinson RAS, Joshi G, Huang Q, Sultana R, Baker AS, Cai J, Pierce W, St Clair DK, Markesbery WR, Butterfield DA. Proteomic analysis of brain proteins in APP/PS-1 human double mutant knock-in mice with increasing amyloid β-peptide deposition: insights into the effects of in vivo treatment with N-acetylcysteine as a potential therapeutic intervention in mild cognitive impairment and Alzheimer's disease. Proteomics 2011; 11:4243-56. [PMID: 21954051 DOI: 10.1002/pmic.201000523] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 07/21/2011] [Accepted: 08/18/2011] [Indexed: 12/14/2022]
Abstract
Proteomics analyses were performed on the brains of wild-type (WT) controls and an Alzheimer's disease (AD) mouse model, APP/PS-1 human double mutant knock-in mice. Mice were given either drinking water or water supplemented with N-acetylcysteine (NAC) (2 mg/kg body weight) for a period of five months. The time periods of treatment correspond to ages prior to Aβ deposition (i.e. 4-9 months), resembling human mild cognitive impairment (MCI), and after Aβ deposition (i.e. 7-12 months), more closely resembling advancing stages of AD. Substantial differences exist between the proteomes of WT and APP/PS-1 mice at 9 or 12 months, indicating that Aβ deposition and oxidative stress lead to downstream changes in protein expression. Altered proteins are involved in energy-related pathways, excitotoxicity, cell cycle signaling, synaptic abnormalities, and cellular defense and structure. Overall, the proteomic results support the notion that NAC may be beneficial for increasing cellular stress responses in WT mice and for influencing the levels of energy- and mitochondria-related proteins in APP/PS-1 mice.
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Affiliation(s)
- Renã A S Robinson
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
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Vanguilder HD, Freeman WM. The hippocampal neuroproteome with aging and cognitive decline: past progress and future directions. Front Aging Neurosci 2011; 3:8. [PMID: 21647399 PMCID: PMC3102218 DOI: 10.3389/fnagi.2011.00008] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Accepted: 05/12/2011] [Indexed: 01/12/2023] Open
Abstract
Although steady progress on understanding brain aging has been made over recent decades through standard anatomical, immunohistochemical, and biochemical techniques, the biological basis of non-neurodegenerative cognitive decline with aging remains to be determined. This is due in part to technical limitations of traditional approaches, in which only a small fraction of neurobiologically relevant proteins, mRNAs or metabolites can be assessed at a time. With the development and refinement of proteomic technologies that enable simultaneous quantitative assessment of hundreds to thousands of proteins, neuroproteomic studies of brain aging and cognitive decline are becoming more widespread. This review focuses on the contributions of neuroproteomic investigations to advances in our understanding of age-related deficits of hippocampus-dependent spatial learning and memory. Accumulating neuroproteomic data demonstrate that hippocampal aging involves common themes of dysregulated metabolism, increased oxidative stress, altered protein processing, and decreased synaptic function. Additionally, growing evidence suggests that cognitive decline does not represent a "more aged" phenotype, but rather is associated with specific neuroproteomic changes that occur in addition to age-related alterations. Understanding if and how age-related changes in the hippocampal neuroproteome contribute to cognitive decline and elucidating the pathways and processes that lead to cognitive decline are critical objectives that remain to be achieved. Progress in the field and challenges that remain to be addressed with regard to animal models, behavioral testing, and proteomic reporting are also discussed.
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Affiliation(s)
- Heather D Vanguilder
- Department of Pharmacology, Penn State College of Medicine, Milton S. Hershey Medical Center Hershey, PA, USA
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VanGuilder HD, Farley JA, Yan H, Van Kirk CA, Mitschelen M, Sonntag WE, Freeman WM. Hippocampal dysregulation of synaptic plasticity-associated proteins with age-related cognitive decline. Neurobiol Dis 2011; 43:201-12. [PMID: 21440628 DOI: 10.1016/j.nbd.2011.03.012] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Accepted: 03/18/2011] [Indexed: 12/16/2022] Open
Abstract
Age-related cognitive decline occurs without frank neurodegeneration and is the most common cause of memory impairment in aging individuals. With increasing longevity, cognitive deficits, especially in hippocampus-dependent memory processes, are increasing in prevalence. Nevertheless, the neurobiological basis of age-related cognitive decline remains unknown. While concerted efforts have led to the identification of neurobiological changes with aging, few age-related alterations have been definitively correlated to behavioral measures of cognitive decline. In this work, adult (12 months) and aged (28 months) rats were categorized by Morris water maze performance as Adult cognitively Intact, Aged cognitively Intact or Aged cognitively Impaired, and protein expression was examined in hippocampal synaptosome preparations. Previously described differences in synaptic expression of neurotransmission-associated proteins (Dnm1, Hpca, Stx1, Syn1, Syn2, Syp, SNAP25, VAMP2 and 14-3-3 eta, gamma, and zeta) were confirmed between Adult and Aged rats, with no further dysregulation associated with cognitive impairment. Proteins related to synaptic structural stability (MAP2, drebrin, Nogo-A) and activity-dependent signaling (PSD-95, 14-3-3θ, CaMKIIα) were up- and down-regulated, respectively, with cognitive impairment but were not altered with increasing age. Localization of MAP2, PSD-95, and CaMKIIα demonstrated protein expression alterations throughout the hippocampus. The altered expression of activity- and structural stability-associated proteins suggests that impaired synaptic plasticity is a distinct phenomenon that occurs with age-related cognitive decline, and demonstrates that cognitive decline is not simply an exacerbation of the aging phenotype.
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Affiliation(s)
- Heather D VanGuilder
- Penn State College of Medicine, Department of Pharmacology, Hershey Center for Applied Research, 500 University Drive, Hershey, PA 17033, USA
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Takahashi S, Masuda J, Shimagami H, Ohta Y, Kanda T, Saito K, Kato H. Mild caloric restriction up-regulates the expression of prohibitin: A proteome study. Biochem Biophys Res Commun 2011; 405:462-7. [DOI: 10.1016/j.bbrc.2011.01.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 01/15/2011] [Indexed: 02/07/2023]
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Kawasaki H, Ikeda K, Shigenaga A, Baba T, Takamori K, Ogawa H, Yamakura F. Mass spectrometric identification of tryptophan nitration sites on proteins in peroxynitrite-treated lysates from PC12 cells. Free Radic Biol Med 2011; 50:419-27. [PMID: 21108999 DOI: 10.1016/j.freeradbiomed.2010.10.688] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 09/29/2010] [Accepted: 10/11/2010] [Indexed: 11/24/2022]
Abstract
One of the important sites of peroxynitrite action that affects cellular function is known to be nitration of tyrosine residues. However, tryptophan residues could be another target of peroxynitrite-dependent modification of protein function, as we have shown previously using a model protein (F. Yamakura et al., J. Biochem. 138:57-69; 2005). Here, we report the identification of several proteins that allowed us to determine the position of nitrotryptophan in their amino acid sequences in a more complex system. We modified lysates from PC12 cells with and without nerve growth factor (NGF) by treatment with peroxynitrite (0.98 or 4.9 mM). Western blot analyses using anti-6-nitrotryptophan antibody showed several immunoreactive bands and spots, which were subsequently subjected to trypsin digestion and LC-ESI-MS-MS analysis. We identified several tryptic peptides including nitrotryptophan residues, which were derived from L-lactate dehydrogenase A, malate dehydrogenase 1, M2 pyruvate kinase, and heat-shock protein 90 α, in peroxynitrite-treated lysates from PC12 cells, and l-lactate dehydrogenase A, malate dehydrogenase 1, transaldorase, and lactoylglutathione lyase, in peroxynitrite-treated lysates from NGF/PC12 cells. The molar ratio of 3-nitrotyrosine to 6-nitrotryptophan in protease-digested PC12 cell lysates treated with peroxynitrite was determined to be 5.8 to 1 by using an HPLC-CoulArray system. This is the first report to identify several specific sites of nitrated tryptophan on proteins in a complex system treated with peroxynitrite and to compare the susceptibility of nitration between tryptophan and tyrosine residues of the proteins.
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Affiliation(s)
- Hiroaki Kawasaki
- Institute for Environmental and Gender-Specific Medicine, Graduate School of Medicine, Urayasu Hospital, Juntendo University, Urayasu, Chiba 279-0021, Japan
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Di Domenico F, Perluigi M, Butterfield DA, Cornelius C, Calabrese V. Oxidative damage in rat brain during aging: interplay between energy and metabolic key target proteins. Neurochem Res 2010; 35:2184-92. [PMID: 20963486 DOI: 10.1007/s11064-010-0295-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2010] [Indexed: 12/21/2022]
Abstract
Aging is characterized by a gradual and continuous loss of physiological functions and responses particularly marked in the central nervous system. Reactive oxygen species (ROS) can react with all major biological macromolecules such as carbohydrates, nucleic acids, lipids, and proteins. Since proteins are the major components of biological systems and regulate multiple cellular pathways, oxidative damage of key proteins are considered to be the principal molecular mechanisms leading to age-related deficits. Recent evidences support the notion that a decrease of energy metabolism in the brain contribute to neuronal loss and cognitive decline associated with aging. In the present study we identified selective protein targets which are oxidized in aged rats compared with adult rats. Most of the oxidatively modified proteins we found in the present study are key proteins involved in energy metabolism and ATP production. Oxidative modification of these proteins was associated with decreased enzyme activities. In addition, we also found decreased levels of thiol reducing system. Our study demonstrated that oxidative damage to specific proteins impairs energy metabolism and ATP production thus contributing to shift neuronal cells towards a more oxidized environment which ultimately might compromise multiple neuronal functions. These results further confirm that increased protein oxidation coupled with decreased reducing systems are characteristic hallmarks of aging and aging-related degenerative processes.
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Affiliation(s)
- F Di Domenico
- Department of Biochemical Sciences, Sapienza University of Rome, P le A Moro 5, 00185 Rome, Italy
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Perluigi M, Di Domenico F, Giorgi A, Schininà ME, Coccia R, Cini C, Bellia F, Cambria MT, Cornelius C, Butterfield DA, Calabrese V. Redox proteomics in aging rat brain: involvement of mitochondrial reduced glutathione status and mitochondrial protein oxidation in the aging process. J Neurosci Res 2010; 88:3498-507. [PMID: 20936692 DOI: 10.1002/jnr.22500] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2010] [Revised: 07/11/2010] [Accepted: 07/16/2010] [Indexed: 12/14/2022]
Abstract
Increasing evidence supports the notion that increased oxidative stress is a fundamental cause in the aging process and in neurodegenerative diseases. As a result, a decline in cognitive function is generally associated with brain aging. Reactive oxygen species (ROS) are highly reactive intermediates, which can modify proteins, nucleic acids, and polyunsaturated fatty acids, leading to neuronal damage. Because proteins are major components of biological systems and play key roles in a variety of cellular functions, oxidative damage to proteins represents a primary event observed in aging and age-related neurodegenerative disorders. In the present study, with a redox proteomics approach, we identified mitochondrial oxidatively modified proteins as a function of brain aging, specifically in those brain regions, such as cortex and hippocampus, that are commonly affected by the aging process. In all brain regions examined, many of the identified proteins were energy-related, such as pyruvate kinase, ATP synthase, aldolase, creatine kinase, and α-enolase. These alterations were associated with significant changes in both cytosolic and mitochondrial redox status in all brain regions analyzed. Our finding is in line with current literature postulating that free radical damage and decreased energy production are characteristic hallmarks of the aging process. In additon, our results further contribute to identifying common pathological pathways involved both in aging and in neurodegenerative disease development.
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Affiliation(s)
- M Perluigi
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
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VanGuilder HD, Yan H, Farley JA, Sonntag WE, Freeman WM. Aging alters the expression of neurotransmission-regulating proteins in the hippocampal synaptoproteome. J Neurochem 2010; 113:1577-88. [PMID: 20374424 DOI: 10.1111/j.1471-4159.2010.06719.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Decreased cognitive performance reduces independence and quality of life for aging individuals. Healthy brain aging does not involve significant neuronal loss, but little is known about the effects of aging at synaptic terminals. Age-related cognitive decline likely reflects the manifestation of dysregulated synaptic function and ineffective neurotransmission. In this study, hippocampal synaptosomes were enriched from young-adult (3 months), adult (12 months), and aged (26 months) Fischer 344 x Brown Norway rats, and quantitative alterations in the synaptoproteome were examined by 2-DIGE and MS/MS. Bioinformatic analysis of differentially expressed proteins identified a significant effect of aging on a network of neurotransmission-regulating proteins. Specifically, altered expression of DNM1, HPCA, PSD95, SNAP25, STX1, SYN1, SYN2, SYP, and VAMP2 was confirmed by immunoblotting. 14-3-3 isoforms identified in the proteomic analysis were also confirmed as a result of their implication in the regulation of the synaptic vesicle cycle and neurotransmission modulation. The findings of this study demonstrate a coordinated down-regulation of neurotransmission-regulating proteins that suggests an age-based deterioration of hippocampal neurotransmission occurring between adulthood and advanced age. Altered synaptic protein expression may decrease stimulus-induced neurotransmission and vesicle replenishment during prolonged or intense stimulation, which are necessary for learning and the formation and perseverance of memory.
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Affiliation(s)
- Heather D VanGuilder
- Department of Pharmacology, Hershey Center for Applied Research, Penn State College of Medicine, University Drive, Hershey, Pennsylvania 17033, USA
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Ageing alters the supramolecular architecture of OxPhos complexes in rat brain cortex. Exp Gerontol 2010; 45:563-72. [PMID: 20159033 DOI: 10.1016/j.exger.2010.02.003] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2009] [Revised: 01/18/2010] [Accepted: 02/02/2010] [Indexed: 11/21/2022]
Abstract
Activity and stability of life-supporting proteins are determined not only by their abundance and by post-translational modifications, but also by specific protein-protein interactions. This holds true both for signal-transduction and energy-converting cascades. For vital processes such as life-span control and senescence, to date predominantly age-dependent alterations in abundance and to lesser extent in post-translational modifications of proteins are examined to elucidate the cause of ageing at the molecular level. In mitochondria of rat cortex, we quantified profound changes in the proportion of supramolecular assemblies (supercomplexes) of the respiratory chain complexes I, III(2), IV as well as of the MF(o)F(1) ATP synthase (complex V) by 2D-native/SDS electrophoresis and fluorescent staining. Complex I was present solely in supercomplexes and those lacking complex IV were least stable in aged animals (2.4-fold decline). The ATP synthase was confirmed as a prominent target of age-associated degradation by an overall decline in abundance of 1.5-fold for the monomer and an 2.8-fold increase of unbound F(1). Oligomerisation of the ATP synthase increases during ageing and might modulate the cristae architecture. These data could explain the link between ageing and respiratory control as well as ROS generation.
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