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Iskusnykh IY, Zakharova AA, Kryl’skii ED, Popova TN. Aging, Neurodegenerative Disorders, and Cerebellum. Int J Mol Sci 2024; 25:1018. [PMID: 38256091 PMCID: PMC10815822 DOI: 10.3390/ijms25021018] [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: 12/13/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
An important part of the central nervous system (CNS), the cerebellum is involved in motor control, learning, reflex adaptation, and cognition. Diminished cerebellar function results in the motor and cognitive impairment observed in patients with neurodegenerative disorders such as Alzheimer's disease (AD), vascular dementia (VD), Parkinson's disease (PD), Huntington's disease (HD), spinal muscular atrophy (SMA), amyotrophic lateral sclerosis (ALS), Friedreich's ataxia (FRDA), and multiple sclerosis (MS), and even during the normal aging process. In most neurodegenerative disorders, impairment mainly occurs as a result of morphological changes over time, although during the early stages of some disorders such as AD, the cerebellum also serves a compensatory function. Biological aging is accompanied by changes in cerebellar circuits, which are predominantly involved in motor control. Despite decades of research, the functional contributions of the cerebellum and the underlying molecular mechanisms in aging and neurodegenerative disorders remain largely unknown. Therefore, this review will highlight the molecular and cellular events in the cerebellum that are disrupted during the process of aging and the development of neurodegenerative disorders. We believe that deeper insights into the pathophysiological mechanisms of the cerebellum during aging and the development of neurodegenerative disorders will be essential for the design of new effective strategies for neuroprotection and the alleviation of some neurodegenerative disorders.
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Affiliation(s)
- Igor Y. Iskusnykh
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Anastasia A. Zakharova
- Department of Medical Biochemistry, Faculty of Biomedicine, Pirogov Russian National Research Medical University, Ostrovitianov St. 1, Moscow 117997, Russia
| | - Evgenii D. Kryl’skii
- Department of Medical Biochemistry, Molecular and Cell Biology, Voronezh State University, Universitetskaya Sq. 1, Voronezh 394018, Russia; (E.D.K.)
| | - Tatyana N. Popova
- Department of Medical Biochemistry, Molecular and Cell Biology, Voronezh State University, Universitetskaya Sq. 1, Voronezh 394018, Russia; (E.D.K.)
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2
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Vijayaragavan K, Cannon BJ, Tebaykin D, Bossé M, Baranski A, Oliveria JP, Bukhari SA, Mrdjen D, Corces MR, McCaffrey EF, Greenwald NF, Sigal Y, Marquez D, Khair Z, Bruce T, Goldston M, Bharadwaj A, Montine KS, Angelo RM, Montine TJ, Bendall SC. Single-cell spatial proteomic imaging for human neuropathology. Acta Neuropathol Commun 2022; 10:158. [PMID: 36333818 PMCID: PMC9636771 DOI: 10.1186/s40478-022-01465-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022] Open
Abstract
Neurodegenerative disorders are characterized by phenotypic changes and hallmark proteopathies. Quantifying these in archival human brain tissues remains indispensable for validating animal models and understanding disease mechanisms. We present a framework for nanometer-scale, spatial proteomics with multiplex ion beam imaging (MIBI) for capturing neuropathological features. MIBI facilitated simultaneous, quantitative imaging of 36 proteins on archival human hippocampus from individuals spanning cognitively normal to dementia. Customized analysis strategies identified cell types and proteopathies in the hippocampus across stages of Alzheimer's disease (AD) neuropathologic change. We show microglia-pathologic tau interactions in hippocampal CA1 subfield in AD dementia. Data driven, sample independent creation of spatial proteomic regions identified persistent neurons in pathologic tau neighborhoods expressing mitochondrial protein MFN2, regardless of cognitive status, suggesting a survival advantage. Our study revealed unique insights from multiplexed imaging and data-driven approaches for neuropathologic analysis and serves broadly as a methodology for spatial proteomic analysis of archival human neuropathology. TEASER: Multiplex Ion beam Imaging enables deep spatial phenotyping of human neuropathology-associated cellular and disease features.
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Affiliation(s)
| | - Bryan J Cannon
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Dmitry Tebaykin
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Marc Bossé
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Alex Baranski
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - J P Oliveria
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Syed A Bukhari
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Dunja Mrdjen
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | | | - Erin F McCaffrey
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Noah F Greenwald
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | | | - Diana Marquez
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Zumana Khair
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Trevor Bruce
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Mako Goldston
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Anusha Bharadwaj
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Kathleen S Montine
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - R Michael Angelo
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Thomas J Montine
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA
| | - Sean C Bendall
- Department of Pathology, School of Medicine, Stanford University, Stanford, CA, USA.
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3
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Liu CC, McCaffrey EF, Greenwald NF, Soon E, Risom T, Vijayaragavan K, Oliveria JP, Mrdjen D, Bosse M, Tebaykin D, Bendall SC, Angelo M. Multiplexed Ion Beam Imaging: Insights into Pathobiology. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2021; 17:403-423. [PMID: 34752710 DOI: 10.1146/annurev-pathmechdis-030321-091459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Next-generation tools for multiplexed imaging have driven a new wave of innovation in understanding how single-cell function and tissue structure are interrelated. In previous work, we developed multiplexed ion beam imaging by time of flight, a highly multiplexed platform that uses secondary ion mass spectrometry to image dozens of antibodies tagged with metal reporters. As instrument throughput has increased, the breadth and depth of imaging data have increased as well. To extract meaningful information from these data, we have developed tools for cell identification, cell classification, and spatial analysis. In this review, we discuss these tools and provide examples of their application in various contexts, including ductal carcinoma in situ, tuberculosis, and Alzheimer's disease. We hope the synergy between multiplexed imaging and automated image analysis will drive a new era in anatomic pathology and personalized medicine wherein quantitative spatial signatures are used routinely for more accurate diagnosis, prognosis, and therapeutic selection. Expected final online publication date for the Annual Review of Pathology: Mechanisms of Disease, Volume 17 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Candace C Liu
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
| | - Erin F McCaffrey
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
| | - Noah F Greenwald
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
| | - Erin Soon
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
| | - Tyler Risom
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , , .,Current affiliation: Genentech, South San Francisco, California 94080; USA
| | - Kausalia Vijayaragavan
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
| | - John-Paul Oliveria
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , , .,Current affiliation: Genentech, South San Francisco, California 94080; USA
| | - Dunja Mrdjen
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
| | - Marc Bosse
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
| | - Dmitry Tebaykin
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
| | - Sean C Bendall
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
| | - Michael Angelo
- Department of Pathology, Stanford University, Stanford, California 94304 USA; , , , , , , , , , , ,
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Koch SC, Nelson A, Hartenstein V. Structural aspects of the aging invertebrate brain. Cell Tissue Res 2021; 383:931-947. [PMID: 33409654 PMCID: PMC7965346 DOI: 10.1007/s00441-020-03314-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 09/28/2020] [Indexed: 11/26/2022]
Abstract
Aging is characterized by a decline in neuronal function in all animal species investigated so far. Functional changes are accompanied by and may be in part caused by, structurally visible degenerative changes in neurons. In the mammalian brain, normal aging shows abnormalities in dendrites and axons, as well as ultrastructural changes in synapses, rather than global neuron loss. The analysis of the structural features of aging neurons, as well as their causal link to molecular mechanisms on the one hand, and the functional decline on the other hand is crucial in order to understand the aging process in the brain. Invertebrate model organisms like Drosophila and C. elegans offer the opportunity to apply a forward genetic approach to the analysis of aging. In the present review, we aim to summarize findings concerning abnormalities in morphology and ultrastructure in invertebrate brains during normal aging and compare them to what is known for the mammalian brain. It becomes clear that despite of their considerably shorter life span, invertebrates display several age-related changes very similar to the mammalian condition, including the retraction of dendritic and axonal branches at specific locations, changes in synaptic density and increased accumulation of presynaptic protein complexes. We anticipate that continued research efforts in invertebrate systems will significantly contribute to reveal (and possibly manipulate) the molecular/cellular pathways leading to neuronal aging in the mammalian brain.
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Affiliation(s)
- Sandra C Koch
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Annie Nelson
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Volker Hartenstein
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles (UCLA), Los Angeles, California, USA.
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Burns JC, Cotleur B, Walther DM, Bajrami B, Rubino SJ, Wei R, Franchimont N, Cotman SL, Ransohoff RM, Mingueneau M. Differential accumulation of storage bodies with aging defines discrete subsets of microglia in the healthy brain. eLife 2020; 9:e57495. [PMID: 32579115 PMCID: PMC7367682 DOI: 10.7554/elife.57495] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/21/2020] [Indexed: 12/19/2022] Open
Abstract
To date, microglia subsets in the healthy CNS have not been identified. Utilizing autofluorescence (AF) as a discriminating parameter, we identified two novel microglia subsets in both mice and non-human primates, termed autofluorescence-positive (AF+) and negative (AF-). While their proportion remained constant throughout most adult life, the AF signal linearly and specifically increased in AF+ microglia with age and correlated with a commensurate increase in size and complexity of lysosomal storage bodies, as detected by transmission electron microscopy and LAMP1 levels. Post-depletion repopulation kinetics revealed AF- cells as likely precursors of AF+ microglia. At the molecular level, the proteome of AF+ microglia showed overrepresentation of endolysosomal, autophagic, catabolic, and mTOR-related proteins. Mimicking the effect of advanced aging, genetic disruption of lysosomal function accelerated the accumulation of storage bodies in AF+ cells and led to impaired microglia physiology and cell death, suggestive of a mechanistic convergence between aging and lysosomal storage disorders.
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Affiliation(s)
- Jeremy Carlos Burns
- Multiple Sclerosis & Neurorepair Research Unit, BiogenCambridgeUnited States
- Department of Pharmacology & Experimental Therapeutics, Boston University School of MedicineBostonUnited States
| | - Bunny Cotleur
- Emerging Neurosciences Research Unit, BiogenCambridgeUnited States
| | | | - Bekim Bajrami
- Chemical Biology and ProteomicsCambridgeUnited States
| | - Stephen J Rubino
- Multiple Sclerosis & Neurorepair Research Unit, BiogenCambridgeUnited States
| | - Ru Wei
- Chemical Biology and ProteomicsCambridgeUnited States
| | | | - Susan L Cotman
- Center for Genomic Medicine, Department of Neurology, Massachusetts General Hospital, Harvard Medical SchoolBostonUnited States
| | | | - Michael Mingueneau
- Multiple Sclerosis & Neurorepair Research Unit, BiogenCambridgeUnited States
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Gourlaouen M, Angot A, Mancin M, Bebay C, Soumaré B, Ellero F, Zecchin B, Leopardi S, De Battisti C, Terregino C, De Benedictis P. An inter-laboratory trial as a tool to increase rabies diagnostic capabilities of Sub-Saharan African Veterinary laboratories. PLoS Negl Trop Dis 2020; 14:e0008010. [PMID: 32040472 PMCID: PMC7010240 DOI: 10.1371/journal.pntd.0008010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 12/20/2019] [Indexed: 12/14/2022] Open
Abstract
To achieve the goal of eliminating dog-mediated human rabies deaths by 2030, many African countries have agreed to list rabies as a priority zoonotic disease and to undertake both short and long-term control programs. Within this context, reliable local diagnosis is essential for the success of field surveillance systems. However, a harmonized, sustainable and supportive diagnostic offer has yet to be achieved in the continent. We herewith describe the organization and outcome of a proficiency test (PT) for the post-mortem diagnosis of rabies in animals, involving thirteen veterinary laboratories and one public health laboratory in Africa. Participants were invited to assess both the performance of the Direct Fluorescent Antibody (DFA) test and of a conventional RT-PCR. From the submitted results, while thirteen laboratories proved to be able to test the samples through DFA test, eleven performed the RT-PCR method; ten applied both techniques. Of note, the number of laboratories able to apply rabies RT-PCR had increased from four to ten after the exercise. Importantly, results showed a higher proficiency in applying the molecular test compared to the DFA test (concordance, sensitivity and specificity: 98.2%, 96.97% and 100% for RT-PCR; 87.69%, 89.23% and 86.15% for DFA test), indicating the feasibility of molecular methods to diagnose animal pathogens in Africa. Another positive outcome of this approach was that negative and positive controls were made available for further in-house validation of new techniques; in addition, a detailed questionnaire was provided to collect useful and relevant information on the diagnostic procedures and biosafety measures applied at laboratory level.
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Affiliation(s)
- Morgane Gourlaouen
- FAO and National Reference Centre for Rabies, OIE Collaborating Centre for Diseases at the Animal-Human Interface, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD), Italy
| | - Angélique Angot
- Laboratory Unit—Emergency Prevention System (EMPRES), Animal Health Service, Food and Agriculture Organization of the United Nations (FAO-UN), Rome, Italy
| | - Marzia Mancin
- Risk Analysis and Public Health Department, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD), Italy
| | - Charles Bebay
- Food and Agriculture Organization of the United Nations (FAO), Emergency Center for Transboundary Animal Diseases (ECTAD), Nairobi, Kenya
| | - Baba Soumaré
- Food and Agriculture Organization of the United Nations (FAO-UN), Emergency Center for Transboundary Animal Diseases (ECTAD), Accra, Ghana
| | - Francesca Ellero
- FAO and National Reference Centre for Rabies, OIE Collaborating Centre for Diseases at the Animal-Human Interface, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD), Italy
| | - Barbara Zecchin
- FAO and National Reference Centre for Rabies, OIE Collaborating Centre for Diseases at the Animal-Human Interface, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD), Italy
| | - Stefania Leopardi
- FAO and National Reference Centre for Rabies, OIE Collaborating Centre for Diseases at the Animal-Human Interface, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD), Italy
| | - Cristian De Battisti
- FAO and National Reference Centre for Rabies, OIE Collaborating Centre for Diseases at the Animal-Human Interface, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD), Italy
- Laboratory Unit—Emergency Prevention System (EMPRES), Animal Health Service, Food and Agriculture Organization of the United Nations (FAO-UN), Rome, Italy
| | - Calogero Terregino
- FAO and National Reference Centre for Rabies, OIE Collaborating Centre for Diseases at the Animal-Human Interface, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD), Italy
| | - Paola De Benedictis
- FAO and National Reference Centre for Rabies, OIE Collaborating Centre for Diseases at the Animal-Human Interface, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD), Italy
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7
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Multimodal Imaging Study of Gadolinium Presence in Rat Cerebellum: Differences Between Gd Chelates, Presence in the Virchow-Robin Space, Association With Lipofuscin, and Hypotheses About Distribution Pathway. Invest Radiol 2019; 53:518-528. [PMID: 29985204 PMCID: PMC6092107 DOI: 10.1097/rli.0000000000000490] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Purpose The aim of this study was to investigate, based on in-depth multimodal imaging, the presence of Gd deposits, their ultrastructure, location, and co-location with endogenous elements, in the cerebellum, after repeated administrations of gadolinium-based contrast agents (GBCAs). Methods Rats sensitized by subtotal nephrectomy received 20 daily intravenous injections of 0.6 mmol Gd/kg for 5 weeks of commercial forms of either gadoterate, gadobenate or gadodiamide, or saline (n = 2/group). The study was randomized and blinded. Magnetic resonance imaging examination was performed weekly. One month after the last injection, electron microscopy analysis of the deep cerebellar nuclei, the granular layer of cerebellar cortex, and the choroid plexus was performed. Elemental analysis of deposits was carried out by electron energy loss spectroscopy. Secondary ion mass spectroscopy was used for complementary chemical mapping. Results A T1 hypersignal was evidenced in the deep cerebellar nuclei of rats treated with linear GBCAs, and Gd deposits were identified in all the studied cerebellar structures with gadobenate and gadodiamide (except in the granular layer in gadobenate-treated rats). No such effect was found with the macrocyclic GBCA gadoterate. Most of the Gd deposits revealed a characteristic spheroid “sea urchin-like” morphology, rich in phosphorus, and were localized in the basal lamina of microvessels, in the perivascular Virchow-Robin space, and in the interstitium. Gd was also identified in the glial cells, associated with lipofuscin pigments, for these same groups. Conclusions Transmission electron microscopy analysis of cerebellums of renally impaired rats repeatedly injected with gadobenate and gadodiamide revealed the presence of Gd. Spheroid Gd depositions consisting of a filamentous meshwork were observed in the wall of microvessels, in perivascular Virchow-Robin space, and in the interstitium. Gd was also found in choroid plexus and was associated with pigments (likely lipofuscin) in glial cells. This is consistent with the involvement of the glymphatic distribution pathway for GBCAs. No insoluble Gd deposits were detected in rats injected with the macrocyclic GBCA gadoterate and controls.
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Joviano-Santos JV, Santos-Miranda A, Botelho AFM, de Jesus ICG, Andrade JN, de Oliveira Barreto T, Magalhães-Gomes MPS, Valadão PAC, Cruz JDS, Melo MM, Guatimosim S, Guatimosim C. Increased oxidative stress and CaMKII activity contribute to electro-mechanical defects in cardiomyocytes from a murine model of Huntington's disease. FEBS J 2018; 286:110-123. [PMID: 30451379 DOI: 10.1111/febs.14706] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/09/2018] [Accepted: 11/15/2018] [Indexed: 11/29/2022]
Abstract
Huntington's disease (HD) is a neurodegenerative genetic disorder. Although described as a brain pathology, there is evidence suggesting that defects in other systems can contribute to disease progression. In line with this, cardiovascular defects are a major cause of death in HD. To date, relatively little is known about the peripheral abnormalities associated with the disease. Here, we applied a range of assays to evaluate cardiac electro-mechanical properties in vivo, using a previously characterized mouse model of HD (BACHD), and in vitro, using cardiomyocytes isolated from the same mice. We observed conduction disturbances including QT interval prolongation in BACHD mice, indicative of cardiac dysfunction. Cardiomyocytes from these mice demonstrated cellular electro-mechanical abnormalities, including a prolonged action potential, arrhythmic contractions, and relaxation disturbances. Cellular arrhythmia was accompanied by an increase in calcium waves and increased Ca2+ /calmodulin-dependent protein kinase II activity, suggesting that disruption of calcium homeostasis plays a key part. We also described structural abnormalities in the mitochondria of BACHD-derived cardiomyocytes, indicative of oxidative stress. Consistent with this, imbalances in superoxide dismutase and glutathione peroxidase activities were detected. Our data provide an in vivo demonstration of cardiac abnormalities in HD together with new insights into the cellular mechanistic basis, providing a possible explanation for the higher cardiovascular risk in HD.
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Affiliation(s)
| | - Artur Santos-Miranda
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana Flávia Machado Botelho
- Department of Veterinary Clinic and Surgery, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Itamar Couto Guedes de Jesus
- Department of Physiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Jéssica Neves Andrade
- Department of Morphology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Tatiane de Oliveira Barreto
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Jader Dos Santos Cruz
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marília Martins Melo
- Department of Veterinary Clinic and Surgery, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Silvia Guatimosim
- Department of Physiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Cristina Guatimosim
- Department of Morphology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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9
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Singh Kushwaha S, Patro N, Kumar Patro I. A Sequential Study of Age-Related Lipofuscin Accumulation in Hippocampus and Striate Cortex of Rats. Ann Neurosci 2018; 25:223-233. [PMID: 31000961 DOI: 10.1159/000490908] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/14/2018] [Indexed: 12/12/2022] Open
Abstract
Background The age-pigment, lipofuscin that accumulates in cells intrinsically and progressively with age is considered as the hallmark of aging. This accumulation is more prominent in post-mitotic cells like neurons and also appears in glia. Purpose The aim of the present study was to assess the age-associated occurrence and distribution pattern of lipofuscin both in neurons and microglia in various regions of hippocampus and striate cortex. Methods The accumulation pattern of lipofuscin in hippocampus and striate cortex was observed in the female Wistar rats of 6 age groups, that is, 3, 6, 12, 18, 24, and 30 months using the autofluorescent property of lipofuscin and its specific localization in neurons and microglia by dual immunolabeling with NeuN and Iba-1 antibodies respectively. Cytoarchitectural and the morphological age-related changes were observed with cresyl violet staining. Results Lipofuscin pigments accumulate progressively through the normal aging process in hippocampus and striate cortex. However, in hippocampus, lipofuscin accumulates in a region-specific manner with the highest accumulation observed in cornu ammonis (CA) 1 and 3 subregions. Furthermore, the lipofuscin accumulation was also observed in microglia in the senile brains both in the hippocampus and striate cortex. Conclusion The progressive deposition of lipofuscin could result in cellular dysfunction. This encouraged us to forward the idea that microglia not only participate in the removal of the pigment from the neurons but also accumulate these waste products in itself. Such senescent microglia may contribute to age- related neurodegeneration as they lose the neuroprotective potential due to oxidative stress and thus may be unable to effectively phagocytose the age pigment.
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Affiliation(s)
- Sarika Singh Kushwaha
- School of Studies in Neuroscience, Jiwaji University, Gwalior, India.,School of Studies in Zoology, Jiwaji University, Gwalior, India
| | - Nisha Patro
- School of Studies in Neuroscience, Jiwaji University, Gwalior, India
| | - Ishan Kumar Patro
- School of Studies in Neuroscience, Jiwaji University, Gwalior, India.,School of Studies in Zoology, Jiwaji University, Gwalior, India
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10
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Moruno-Manchon JF, Koellhoffer EC, Gopakumar J, Hambarde S, Kim N, McCullough LD, Tsvetkov AS. The G-quadruplex DNA stabilizing drug pyridostatin promotes DNA damage and downregulates transcription of Brca1 in neurons. Aging (Albany NY) 2018; 9:1957-1970. [PMID: 28904242 PMCID: PMC5636668 DOI: 10.18632/aging.101282] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/25/2017] [Indexed: 01/01/2023]
Abstract
The G-quadruplex is a non-canonical DNA secondary structure formed by four DNA strands containing multiple runs of guanines. G-quadruplexes play important roles in DNA recombination, replication, telomere maintenance, and regulation of transcription. Small molecules that stabilize the G-quadruplexes alter gene expression in cancer cells. Here, we hypothesized that the G-quadruplexes regulate transcription in neurons. We discovered that pyridostatin, a small molecule that specifically stabilizes G-quadruplex DNA complexes, induced neurotoxicity and promoted the formation of DNA double–strand breaks (DSBs) in cultured neurons. We also found that pyridostatin downregulated transcription of the Brca1 gene, a gene that is critical for DSB repair. Importantly, in an in vitro gel shift assay, we discovered that an antibody specific to the G-quadruplex structure binds to a synthetic oligonucleotide, which corresponds to the first putative G-quadruplex in the Brca1 gene promoter. Our results suggest that the G-quadruplex complexes regulate transcription in neurons. Studying the G-quadruplexes could represent a new avenue for neurodegeneration and brain aging research.
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Affiliation(s)
- Jose F Moruno-Manchon
- Department of Neurobiology and Anatomy, the University of Texas McGovern Medical School at Houston, TX 77030, USA
| | - Edward C Koellhoffer
- Department of Neurology, the University of Texas McGovern Medical School at Houston, TX 77030, USA
| | - Jayakrishnan Gopakumar
- Summer Research Program at the University of Texas McGovern Medical School at Houston, TX 77030, USA
| | - Shashank Hambarde
- Department of Microbiology and Molecular Genetics, the University of Texas McGovern Medical School at Houston, TX 77030, USA
| | - Nayun Kim
- Department of Microbiology and Molecular Genetics, the University of Texas McGovern Medical School at Houston, TX 77030, USA.,The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Louise D McCullough
- Department of Neurology, the University of Texas McGovern Medical School at Houston, TX 77030, USA.,The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Andrey S Tsvetkov
- Department of Neurobiology and Anatomy, the University of Texas McGovern Medical School at Houston, TX 77030, USA.,The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA.,UTHealth Consortium on Aging, the University of Texas McGovern Medical School, Houston, TX 77030, USA
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11
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Živković V, Stojanović V, Pavlović M, Kundalić B, Trandafilović M, Čukuranović J, Antić M. LIPOFUSCIN ACCUMULATION IN PURKINJE CELLS AS A MARKER OF CEREBELLUM AGING. ACTA MEDICA MEDIANAE 2017. [DOI: 10.5633/amm.2017.0411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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12
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Moruno-Manchon JF, Uzor NE, Kesler SR, Wefel JS, Townley DM, Nagaraja AS, Pradeep S, Mangala LS, Sood AK, Tsvetkov AS. Peroxisomes contribute to oxidative stress in neurons during doxorubicin-based chemotherapy. Mol Cell Neurosci 2017; 86:65-71. [PMID: 29180229 DOI: 10.1016/j.mcn.2017.11.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 11/21/2017] [Accepted: 11/23/2017] [Indexed: 12/14/2022] Open
Abstract
Doxorubicin, a commonly used anti-neoplastic agent, causes severe neurotoxicity. Doxorubicin promotes thinning of the brain cortex and accelerates brain aging, leading to cognitive impairment. Oxidative stress induced by doxorubicin contributes to cellular damage. In addition to mitochondria, peroxisomes also generate reactive oxygen species (ROS) and promote cell senescence. Here, we investigated if doxorubicin affects peroxisomal homeostasis in neurons. We demonstrate that the number of peroxisomes is increased in doxorubicin-treated neurons and in the brains of mice which underwent doxorubicin-based chemotherapy. Pexophagy, the specific autophagy of peroxisomes, is downregulated in neurons, and peroxisomes produce more ROS. 2-hydroxypropyl-β-cyclodextrin (HPβCD), an activator of the transcription factor TFEB, which regulates expression of genes involved in autophagy and lysosome function, mitigates damage of pexophagy and decreases ROS production induced by doxorubicin. We conclude that peroxisome-associated oxidative stress induced by doxorubicin may contribute to neurotoxicity, cognitive dysfunction, and accelerated brain aging in cancer patients and survivors. Peroxisomes might be a valuable new target for mitigating neuronal damage caused by chemotherapy drugs and for slowing down brain aging in general.
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Affiliation(s)
- Jose F Moruno-Manchon
- Department of Neurobiology and Anatomy, The University of Texas, Houston Medical School, Houston, TX, United States
| | - Ndidi-Ese Uzor
- Department of Neurobiology and Anatomy, The University of Texas, Houston Medical School, Houston, TX, United States; The University of Texas Graduate School of Biomedical Sciences, Houston, TX, United States
| | - Shelli R Kesler
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jeffrey S Wefel
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Debra M Townley
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
| | - Archana Sidalaghatta Nagaraja
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Sunila Pradeep
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Lingegowda S Mangala
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Andrey S Tsvetkov
- Department of Neurobiology and Anatomy, The University of Texas, Houston Medical School, Houston, TX, United States; The University of Texas Graduate School of Biomedical Sciences, Houston, TX, United States.
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13
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Moruno-Manchon JF, Uzor NE, Kesler SR, Wefel JS, Townley DM, Nagaraja AS, Pradeep S, Mangala LS, Sood AK, Tsvetkov AS. TFEB ameliorates the impairment of the autophagy-lysosome pathway in neurons induced by doxorubicin. Aging (Albany NY) 2017; 8:3507-3519. [PMID: 27992857 PMCID: PMC5270683 DOI: 10.18632/aging.101144] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 12/12/2016] [Indexed: 11/25/2022]
Abstract
Doxorubicin, a commonly used chemotherapy agent, induces severe cardio- and neurotoxicity. Molecular mechanisms of cardiotoxicity have been extensively studied, but mechanisms by which doxorubicin exhibits its neurotoxic properties remain unclear. Here, we show that doxorubicin impairs neuronal autophagy, leading to the accumulation of an autophagy substrate p62. Neurons treated with doxorubicin contained autophagosomes, damaged mitochondria, and lipid droplets. The brains from mice treated with pegylated liposomal doxorubicin exhibited autophagosomes, often with mitochondria, lipofuscin, and lipid droplets. Interestingly, lysosomes were less acidic in doxorubicin-treated neurons. Overexpression of the transcription factor EB (TFEB), which controls the autophagy-lysosome axis, increased survival of doxorubicin-treated neurons. 2-Hydroxypropyl-β-cyclodextrin (HPβCD), an activator of TFEB, also promoted neuronal survival, decreased the levels of p62, and lowered the pH in lysosomes. Taken together, substantial changes induced by doxorubicin contribute to neurotoxicity, cognitive disturbances in cancer patients and survivors, and accelerated brain aging. The TFEB pathway might be a new approach for mitigating damage of neuronal autophagy caused by doxorubicin.
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Affiliation(s)
- Jose Felix Moruno-Manchon
- Department of Neurobiology and Anatomy, The University of Texas McGovern Medical School at Houston, Houston, TX 77030, USA
| | - Ndidi-Ese Uzor
- Department of Neurobiology and Anatomy, The University of Texas McGovern Medical School at Houston, Houston, TX 77030, USA.,The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Shelli R Kesler
- Department of Neuro-Oncology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jeffrey S Wefel
- Department of Neuro-Oncology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Debra M Townley
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Archana Sidalaghatta Nagaraja
- Department of Gynecologic Oncology and Reproductive Medicine, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Center for RNA Interference and Non-Coding RNA, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Department of Cancer Biology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sunila Pradeep
- Department of Gynecologic Oncology and Reproductive Medicine, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Center for RNA Interference and Non-Coding RNA, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Department of Cancer Biology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lingegowda S Mangala
- Department of Gynecologic Oncology and Reproductive Medicine, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Center for RNA Interference and Non-Coding RNA, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Department of Cancer Biology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Center for RNA Interference and Non-Coding RNA, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Department of Cancer Biology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Andrey S Tsvetkov
- Department of Neurobiology and Anatomy, The University of Texas McGovern Medical School at Houston, Houston, TX 77030, USA.,The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
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14
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Merlo S, Nakayama ABS, Brusco J, Rossi MA, Carlotti CG, Moreira JE. Lipofuscin Granules in the Epileptic Human Temporal Neocortex with Age. Ultrastruct Pathol 2015; 39:378-84. [DOI: 10.3109/01913123.2015.1043416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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15
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A neuronal aging pattern unique to humans and common chimpanzees. Brain Struct Funct 2014; 221:647-64. [DOI: 10.1007/s00429-014-0931-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 10/24/2014] [Indexed: 12/27/2022]
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