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Pasetto L, Grassano M, Pozzi S, Luotti S, Sammali E, Migazzi A, Basso M, Spagnolli G, Biasini E, Micotti E, Cerovic M, Carli M, Forloni G, De Marco G, Manera U, Moglia C, Mora G, Traynor BJ, Chiò A, Calvo A, Bonetto V. Defective cyclophilin A induces TDP-43 proteinopathy: implications for amyotrophic lateral sclerosis and frontotemporal dementia. Brain 2021; 144:3710-3726. [PMID: 34972208 PMCID: PMC8719849 DOI: 10.1093/brain/awab333] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/23/2021] [Accepted: 08/01/2021] [Indexed: 11/20/2022] Open
Abstract
Aggregation and cytoplasmic mislocalization of TDP-43 are pathological hallmarks of amyotrophic lateral sclerosis and frontotemporal dementia spectrum. However, the molecular mechanism by which TDP-43 aggregates form and cause neurodegeneration remains poorly understood. Cyclophilin A, also known as peptidyl-prolyl cis-trans isomerase A (PPIA), is a foldase and molecular chaperone. We previously found that PPIA interacts with TDP-43 and governs some of its functions, and its deficiency accelerates disease in a mouse model of amyotrophic lateral sclerosis. Here we characterized PPIA knock-out mice throughout their lifespan and found that they develop a neurodegenerative disease with key behavioural features of frontotemporal dementia, marked TDP-43 pathology and late-onset motor dysfunction. In the mouse brain, deficient PPIA induces mislocalization and aggregation of the GTP-binding nuclear protein Ran, a PPIA interactor and a master regulator of nucleocytoplasmic transport, also for TDP-43. Moreover, in absence of PPIA, TDP-43 autoregulation is perturbed and TDP-43 and proteins involved in synaptic function are downregulated, leading to impairment of synaptic plasticity. Finally, we found that PPIA was downregulated in several patients with amyotrophic lateral sclerosis and amyotrophic lateral sclerosis-frontotemporal dementia, and identified a PPIA loss-of-function mutation in a patient with sporadic amyotrophic lateral sclerosis . The mutant PPIA has low stability, altered structure and impaired interaction with TDP-43. These findings strongly implicate that defective PPIA function causes TDP-43 mislocalization and dysfunction and should be considered in future therapeutic approaches.
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Affiliation(s)
- Laura Pasetto
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy
| | - Maurizio Grassano
- 'Rita Levi Montalcini' Department of Neuroscience, University of Torino, Torino, Italy
| | - Silvia Pozzi
- CERVO Brain Research Centre, Québec City, Québec, Canada
| | - Silvia Luotti
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy
| | - Eliana Sammali
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy
| | - Alice Migazzi
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Manuela Basso
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy.,Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Giovanni Spagnolli
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy.,Dulbecco Telethon Institute, University of Trento, Trento, Italy
| | - Emiliano Biasini
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy.,Dulbecco Telethon Institute, University of Trento, Trento, Italy
| | - Edoardo Micotti
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy
| | - Milica Cerovic
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy
| | - Mirjana Carli
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy
| | - Gianluigi Forloni
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy
| | - Giovanni De Marco
- 'Rita Levi Montalcini' Department of Neuroscience, University of Torino, Torino, Italy
| | - Umberto Manera
- 'Rita Levi Montalcini' Department of Neuroscience, University of Torino, Torino, Italy
| | - Cristina Moglia
- 'Rita Levi Montalcini' Department of Neuroscience, University of Torino, Torino, Italy
| | - Gabriele Mora
- Department of Neurorehabilitation, ICS Maugeri IRCCS, Milano, Italy
| | - Bryan J Traynor
- Neuromuscular Diseases Research Section, Laboratory of Neurogenetics, National Institute on Aging, NIH, Bethesda, MD 20892, USA.,Department of Neurology, Johns Hopkins University Medical Center, Baltimore, MD 21287, USA.,Reta Lila Weston Institute, UCL Queen Square Institute of Neurology, University College London, London, UK
| | - Adriano Chiò
- 'Rita Levi Montalcini' Department of Neuroscience, University of Torino, Torino, Italy
| | - Andrea Calvo
- 'Rita Levi Montalcini' Department of Neuroscience, University of Torino, Torino, Italy
| | - Valentina Bonetto
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milano, Italy
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2
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Zhao Y, Tang F, Lee D, Xiong WC. Expression of Low Level of VPS35-mCherry Fusion Protein Diminishes Vps35 Depletion Induced Neuron Terminal Differentiation Deficits and Neurodegenerative Pathology, and Prevents Neonatal Death. Int J Mol Sci 2021; 22:8394. [PMID: 34445101 PMCID: PMC8395035 DOI: 10.3390/ijms22168394] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/31/2021] [Accepted: 08/02/2021] [Indexed: 11/16/2022] Open
Abstract
Vps35 (vacuolar protein sorting 35) is a key component of retromer that consists of Vps35, Vps26, and Vps29 trimers, and sortin nexin dimers. Dysfunctional Vps35/retromer is believed to be a risk factor for development of various neurodegenerative diseases. Vps35Neurod6 mice, which selectively knock out Vps35 in Neurod6-Cre+ pyramidal neurons, exhibit age-dependent impairments in terminal differentiation of dendrites and axons of cortical and hippocampal neurons, neuro-degenerative pathology (i.e., increases in P62 and Tdp43 (TAR DNA-binding protein 43) proteins, cell death, and reactive gliosis), and neonatal death. The relationships among these phenotypes and the underlying mechanisms remain largely unclear. Here, we provide evidence that expression of low level of VPS35-mCherry fusion protein in Vps35Neurod6 mice could diminish the phenotypes in an age-dependent manner. Specifically, we have generated a conditional transgenic mouse line, LSL-Vps35-mCherry, which expresses VPS35-mCherry fusion protein in a Cre-dependent manner. Crossing LSL-Vps35-mCherry with Vps35Neurod6 to obtain TgVPS35-mCherry, Vps35Neurod6 mice prevent the neonatal death and diminish the dendritic morphogenesis deficit and gliosis at the neonatal, but not the adult age. Further studies revealed that the Vps35-mCherry transgene expression was low, and the level of Vps35 mRNA comprised only ~5-7% of the Vps35 mRNA of control mice. Such low level of VPS35-mCherry could restore the amount of other retromer components (Vps26a and Vps29) at the neonatal age (P14). Importantly, the neurodegenerative pathology presented in the survived adult TgVps35-mCherry; Vps35Neurod6 mice. These results demonstrate the sufficiency of low level of VPS35-mCherry fusion protein to diminish the phenotypes in Vps35Neurod6 mice at the neonatal age, verifying a key role of neuronal Vps35 in stabilizing retromer complex proteins, and supporting the view for Vps35 as a potential therapeutic target for neurodegenerative diseases.
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Affiliation(s)
- Yang Zhao
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (Y.Z.); (D.L.)
| | - Fulei Tang
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA;
| | - Daehoon Lee
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (Y.Z.); (D.L.)
| | - Wen-Cheng Xiong
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (Y.Z.); (D.L.)
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3
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Stroobants S, D'Hooge R, Damme M. Aged Tmem106b knockout mice display gait deficits in coincidence with Purkinje cell loss and only limited signs of non-motor dysfunction. Brain Pathol 2020; 31:223-238. [PMID: 33016371 PMCID: PMC8018119 DOI: 10.1111/bpa.12903] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/14/2020] [Accepted: 09/28/2020] [Indexed: 12/13/2022] Open
Abstract
Genetic variants in TMEM106B are a major risk factor for several neurodegenerative diseases including frontotemporal degeneration, limbic‐predominant age‐related TDP‐43 encephalopathy, Parkinson's disease, late‐onset‐Alzheimer's disease and constitute a genetic determinant of differential aging. TMEM106B encodes an integral lysosomal membrane protein but its precise physiological function in the central nervous system remains enigmatic. Presently, we aimed to increase understanding of TMEM106B contribution to general brain function and aging. We analyzed an aged cohort of Tmem106b knockout‐, heterozygote and wild‐type mice in a behavioral test battery including assessments of motor function as well as, social, emotional and cognitive function. Aged Tmem106b knockout (KO) mice displayed diverse behavioral deficits including motor impairment, gait defects and reduced startle reactivity. In contrast, no prominent deficits were observed in social, emotional or cognitive behaviors. Histologically, we observed late‐onset loss of Purkinje cells followed by reactive gliosis in the cerebellum, which likely contributed to progressive decline in motor function and gait defects in particular. Reactive gliosis was not restricted to the cerebellum but observed in different areas of the brain including the brain stem and parts of the cerebral cortex. Surviving Purkinje cells showed vacuolated lysosomes in the axon initial segment, implicating TMEM106B‐dependent lysosomal trafficking defects as the underlying cause of axonal and more general neuronal dysfunction contributing to behavioral impairments. Our experiments help to elucidate how TMEM106B affects spatial neuronal homeostasis and exemplifies a critical role of TMEM106B in neuronal cells for survival.
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Affiliation(s)
- Stijn Stroobants
- Laboratory of Biological Psychology, KU Leuven, Tiensestraat 102, Leuven, 3000, Belgium
| | - Rudi D'Hooge
- Laboratory of Biological Psychology, KU Leuven, Tiensestraat 102, Leuven, 3000, Belgium
| | - Markus Damme
- Institut für Biochemie, Christian-Albrechts-Universität zu Kiel, Kiel, 24098, Germany
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4
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Hodge RD, Miller JA, Novotny M, Kalmbach BE, Ting JT, Bakken TE, Aevermann BD, Barkan ER, Berkowitz-Cerasano ML, Cobbs C, Diez-Fuertes F, Ding SL, McCorrison J, Schork NJ, Shehata SI, Smith KA, Sunkin SM, Tran DN, Venepally P, Yanny AM, Steemers FJ, Phillips JW, Bernard A, Koch C, Lasken RS, Scheuermann RH, Lein ES. Transcriptomic evidence that von Economo neurons are regionally specialized extratelencephalic-projecting excitatory neurons. Nat Commun 2020; 11:1172. [PMID: 32127543 PMCID: PMC7054400 DOI: 10.1038/s41467-020-14952-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 01/31/2020] [Indexed: 12/12/2022] Open
Abstract
von Economo neurons (VENs) are bipolar, spindle-shaped neurons restricted to layer 5 of human frontoinsula and anterior cingulate cortex that appear to be selectively vulnerable to neuropsychiatric and neurodegenerative diseases, although little is known about other VEN cellular phenotypes. Single nucleus RNA-sequencing of frontoinsula layer 5 identifies a transcriptomically-defined cell cluster that contained VENs, but also fork cells and a subset of pyramidal neurons. Cross-species alignment of this cell cluster with a well-annotated mouse classification shows strong homology to extratelencephalic (ET) excitatory neurons that project to subcerebral targets. This cluster also shows strong homology to a putative ET cluster in human temporal cortex, but with a strikingly specific regional signature. Together these results suggest that VENs are a regionally distinctive type of ET neuron. Additionally, we describe the first patch clamp recordings of VENs from neurosurgically-resected tissue that show distinctive intrinsic membrane properties relative to neighboring pyramidal neurons.
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Affiliation(s)
| | | | | | - Brian E Kalmbach
- Allen Institute for Brain Science, Seattle, WA, USA
- Department of Physiology and Biophysics, University of Washington, Seattle, WA, USA
| | - Jonathan T Ting
- Allen Institute for Brain Science, Seattle, WA, USA
- Department of Physiology and Biophysics, University of Washington, Seattle, WA, USA
| | | | | | | | | | - Charles Cobbs
- The Ben and Catherine Ivy Center for Advanced Brain Tumor Treatment, Swedish Neuroscience Institute, Seattle, WA, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | - Amy Bernard
- Allen Institute for Brain Science, Seattle, WA, USA
| | | | | | - Richard H Scheuermann
- J. Craig Venter Institute, La Jolla, CA, USA
- Department of Pathology, University of California, San Diego, CA, USA
| | - Ed S Lein
- Allen Institute for Brain Science, Seattle, WA, USA.
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5
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Berning BA, Walker AK. The Pathobiology of TDP-43 C-Terminal Fragments in ALS and FTLD. Front Neurosci 2019; 13:335. [PMID: 31031584 PMCID: PMC6470282 DOI: 10.3389/fnins.2019.00335] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 03/22/2019] [Indexed: 12/11/2022] Open
Abstract
During neurodegenerative disease, the multifunctional RNA-binding protein TDP-43 undergoes a vast array of post-translational modifications, including phosphorylation, acetylation, and cleavage. Many of these alterations may directly contribute to the pathogenesis of TDP-43 proteinopathies, which include most forms of amyotrophic lateral sclerosis (ALS) and approximately half of all frontotemporal dementia, pathologically identified as frontotemporal lobar degeneration (FTLD) with TDP-43 pathology. However, the relative contributions of the various TDP-43 post-translational modifications to disease remain unclear, and indeed some may be secondary epiphenomena rather than disease-causative. It is therefore critical to determine the involvement of each modification in disease processes to allow the design of targeted treatments. In particular, TDP-43 C-terminal fragments (CTFs) accumulate in the brains of people with ALS and FTLD and are therefore described as a neuropathological signature of these diseases. Remarkably, these TDP-43 CTFs are rarely observed in the spinal cord, even in ALS which involves dramatic degeneration of spinal motor neurons. Therefore, TDP-43 CTFs are not produced non-specifically in the course of all forms of TDP-43-related neurodegeneration, but rather variably arise due to additional factors influenced by regional heterogeneity in the central nervous system. In this review, we summarize how TDP-43 CTFs are generated and degraded by cells, and critique evidence from studies of TDP-43 CTF pathology in human disease tissues, as well as cell and animal models, to analyze the pathophysiological relevance of TDP-43 CTFs to ALS and FTLD. Numerous studies now indicate that, although TDP-43 CTFs are prevalent in ALS and FTLD brains, disease-related pathology is only variably reproduced in TDP-43 CTF cell culture models. Furthermore, TDP-43 CTF expression in both transgenic and viral-mediated in vivo models largely fails to induce motor or behavioral dysfunction reminiscent of human disease. We therefore conclude that although TDP-43 CTFs are a hallmark of TDP-43-related neurodegeneration in the brain, they are not a primary cause of ALS or FTLD.
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Affiliation(s)
- Britt A. Berning
- Neurodegeneration Pathobiology Laboratory, Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia
| | - Adam K. Walker
- Neurodegeneration Pathobiology Laboratory, Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia
- Centre for Motor Neuron Disease Research, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, North Ryde, NSW, Australia
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6
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Yokoi S, Udagawa T, Fujioka Y, Honda D, Okado H, Watanabe H, Katsuno M, Ishigaki S, Sobue G. 3'UTR Length-Dependent Control of SynGAP Isoform α2 mRNA by FUS and ELAV-like Proteins Promotes Dendritic Spine Maturation and Cognitive Function. Cell Rep 2018; 20:3071-3084. [PMID: 28954225 DOI: 10.1016/j.celrep.2017.08.100] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/19/2017] [Accepted: 08/29/2017] [Indexed: 12/13/2022] Open
Abstract
FUS is an RNA-binding protein associated with frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS). Previous reports have demonstrated intrinsic roles of FUS in synaptic function. However, the mechanism underlying FUS's regulation of synaptic morphology has remained unclear. We found that reduced mature spines after FUS depletion were associated with the internalization of PSD-95 within the dendritic shaft. Mass spectrometry of PSD-95-interacting proteins identified SynGAP, whose expression decreased after FUS depletion. Moreover, FUS and the ELAV-like proteins ELAVL4 and ELAVL1 control SynGAP mRNA stability in a 3'UTR length-dependent manner, resulting in the stable expression of the alternatively spliced SynGAP isoform α2. Finally, abnormal spine maturation and FTLD-like behavioral deficits in FUS-knockout mice were ameliorated by SynGAP α2. Our findings establish an important link between FUS and ELAVL proteins for mRNA stability control and indicate that this mechanism is crucial for the maintenance of synaptic morphology and cognitive function.
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Affiliation(s)
- Satoshi Yokoi
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Tsuyoshi Udagawa
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan; Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi 980-8578, Japan.
| | - Yusuke Fujioka
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Daiyu Honda
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Haruo Okado
- Department of Brain Development and Neural Regeneration, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo 156-8506, Japan
| | - Hirohisa Watanabe
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan; Research Division of Dementia and Neurodegenerative Disease, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Masahisa Katsuno
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Shinsuke Ishigaki
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan; Department of Therapeutics for Intractable Neurological Disorders, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan.
| | - Gen Sobue
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan; Research Division of Dementia and Neurodegenerative Disease, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan.
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7
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Clayton EL, Mancuso R, Nielsen TT, Mizielinska S, Holmes H, Powell N, Norona F, Larsen JO, Milioto C, Wilson KM, Lythgoe MF, Ourselin S, Nielsen JE, Johannsen P, Holm I, Collinge J, Oliver PL, Gomez-Nicola D, Isaacs AM. Early microgliosis precedes neuronal loss and behavioural impairment in mice with a frontotemporal dementia-causing CHMP2B mutation. Hum Mol Genet 2017; 26:873-887. [PMID: 28093491 PMCID: PMC5409096 DOI: 10.1093/hmg/ddx003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 01/03/2017] [Indexed: 01/13/2023] Open
Abstract
Frontotemporal dementia (FTD)-causing mutations in the CHMP2B gene lead to the generation of mutant C-terminally truncated CHMP2B. We report that transgenic mice expressing endogenous levels of mutant CHMP2B developed late-onset brain volume loss associated with frank neuronal loss and FTD-like changes in social behaviour. These data are the first to show neurodegeneration in mice expressing mutant CHMP2B and indicate that our mouse model is able to recapitulate neurodegenerative changes observed in FTD. Neuroinflammation has been increasingly implicated in neurodegeneration, including FTD. Therefore, we investigated neuroinflammation in our CHMP2B mutant mice. We observed very early microglial proliferation that develops into a clear pro-inflammatory phenotype at late stages. Importantly, we also observed a similar inflammatory profile in CHMP2B patient frontal cortex. Aberrant microglial function has also been implicated in FTD caused by GRN, MAPT and C9orf72 mutations. The presence of early microglial changes in our CHMP2B mutant mice indicates neuroinflammation may be a contributing factor to the neurodegeneration observed in FTD.
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Affiliation(s)
- Emma L Clayton
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
| | - Renzo Mancuso
- Biological Sciences, University of Southampton, Southampton General Hospital, South Laboratory and Pathology Block, Tremona Road, Southampton SO166YD, UK
| | - Troels Tolstrup Nielsen
- Department of Neurology, Danish Dementia Research Centre, Rigshospitalet, University of Copenhagen, Denmark
| | - Sarah Mizielinska
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
| | - Holly Holmes
- Centre for Advanced Biomedical Imaging, Division of Medicine and Institute of Child Health, University College London, 72 Huntley Street, London WC1E 6DD, UK
| | - Nicholas Powell
- Centre for Advanced Biomedical Imaging, Division of Medicine and Institute of Child Health, University College London, 72 Huntley Street, London WC1E 6DD, UK.,Faculty of Health and Medical Sciences, Department of Neuroscience and Pharmacology, Panum Institute, University of Copenhagen, DK-2200 Copenhagen N, Denmark
| | - Frances Norona
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
| | - Jytte Overgaard Larsen
- Translational Imaging Group, Centre for Medical Image Computing (CMIC), University College London, UK
| | - Carmelo Milioto
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
| | - Katherine M Wilson
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
| | - Mark F Lythgoe
- Centre for Advanced Biomedical Imaging, Division of Medicine and Institute of Child Health, University College London, 72 Huntley Street, London WC1E 6DD, UK
| | - Sebastian Ourselin
- Faculty of Health and Medical Sciences, Department of Neuroscience and Pharmacology, Panum Institute, University of Copenhagen, DK-2200 Copenhagen N, Denmark
| | - Jörgen E Nielsen
- Department of Neurology, Danish Dementia Research Centre, Rigshospitalet, University of Copenhagen, Denmark.,Section of Neurogenetics, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Peter Johannsen
- Department of Neurology, Danish Dementia Research Centre, Rigshospitalet, University of Copenhagen, Denmark
| | - Ida Holm
- Laboratory for Experimental Neuropathology, Department of Pathology, Randers Hospital, DK-8930 Randers NØ, Denmark.,Institute of Clinical Medicine, Aarhus University, DK-8000 Aarhus C, Denmark
| | - John Collinge
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK.,MRC Prion Unit, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
| | | | - Peter L Oliver
- Department of Physiology, Anatomy and Genetics, University of Oxford, Parks Road, Oxford OX1 3PT, UK
| | - Diego Gomez-Nicola
- Biological Sciences, University of Southampton, Southampton General Hospital, South Laboratory and Pathology Block, Tremona Road, Southampton SO166YD, UK
| | - Adrian M Isaacs
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
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8
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Alfieri JA, Silva PR, Igaz LM. Early Cognitive/Social Deficits and Late Motor Phenotype in Conditional Wild-Type TDP-43 Transgenic Mice. Front Aging Neurosci 2016; 8:310. [PMID: 28066234 PMCID: PMC5167738 DOI: 10.3389/fnagi.2016.00310] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 12/06/2016] [Indexed: 12/11/2022] Open
Abstract
Frontotemporal Dementia (FTD) and amyotrophic lateral sclerosis (ALS) are two neurodegenerative diseases associated to mislocalization and aggregation of TAR DNA-binding protein 43 (TDP-43). To investigate in depth the behavioral phenotype associated with this proteinopathy, we used as a model transgenic (Tg) mice conditionally overexpressing human wild-type TDP 43 protein (hTDP-43-WT) in forebrain neurons. We previously characterized these mice at the neuropathological level and found progressive neurodegeneration and other features that evoke human TDP-43 proteinopathies of the FTD/ALS spectrum. In the present study we analyzed the behavior of mice at multiple domains, including motor, social and cognitive performance. Our results indicate that young hTDP-43-WT Tg mice (1 month after post-weaning transgene induction) present a normal motor phenotype compared to control littermates, as assessed by accelerated rotarod performance, spontaneous locomotor activity in the open field test and a mild degree of spasticity shown by a clasping phenotype. Analysis of social and cognitive behavior showed a rapid installment of deficits in social interaction, working memory (Y-maze test) and recognition memory (novel object recognition test) in the absence of overt motor abnormalities. To investigate if the motor phenotype worsen with age, we analyzed the behavior of mice after long-term (up to 12 months) transgene induction. Our results reveal a decreased performance on the rotarod test and in the hanging wire test, indicating a motor phenotype that was absent in younger mice. In addition, long-term hTDP-43-WT expression led to hyperlocomotion in the open field test. In sum, these results demonstrate a time-dependent emergence of a motor phenotype in older hTDP-43-WT Tg mice, recapitulating aspects of clinical FTD presentations with motor involvement in human patients, and providing a complementary animal model for studying TDP-43 proteinopathies.
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Affiliation(s)
- Julio A Alfieri
- IFIBIO Houssay, Grupo de Neurociencia de Sistemas, Facultad de Medicina, Universidad de Buenos Aires - CONICET Buenos Aires, Argentina
| | - Pablo R Silva
- IFIBIO Houssay, Grupo de Neurociencia de Sistemas, Facultad de Medicina, Universidad de Buenos Aires - CONICET Buenos Aires, Argentina
| | - Lionel M Igaz
- IFIBIO Houssay, Grupo de Neurociencia de Sistemas, Facultad de Medicina, Universidad de Buenos Aires - CONICET Buenos Aires, Argentina
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9
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Vernay A, Therreau L, Blot B, Risson V, Dirrig-Grosch S, Waegaert R, Lequeu T, Sellal F, Schaeffer L, Sadoul R, Loeffler JP, René F. A transgenic mouse expressing CHMP2Bintron5 mutant in neurons develops histological and behavioural features of amyotrophic lateral sclerosis and frontotemporal dementia. Hum Mol Genet 2016; 25:3341-3360. [PMID: 27329763 DOI: 10.1093/hmg/ddw182] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 06/06/2016] [Accepted: 06/07/2016] [Indexed: 12/11/2022] Open
Abstract
Mutations in the charged multivesicular body protein 2B (CHMP2B) are associated with frontotemporal dementia (FTD), amyotrophic lateral sclerosis (ALS), and with a mixed ALS-FTD syndrome. To model this syndrome, we generated a transgenic mouse line expressing the human CHMP2Bintron5 mutant in a neuron-specific manner. These mice developed a dose-dependent disease phenotype. A longitudinal study revealed progressive gait abnormalities, reduced muscle strength and decreased motor coordination. CHMP2Bintron5 mice died due to generalized paralysis. When paralyzed, signs of denervation were present as attested by altered electromyographic profiles, by decreased number of fully innervated neuromuscular junctions, by reduction in size of motor endplates and by a decrease of sciatic nerve axons area. However, spinal motor neurons cell bodies were preserved until death. In addition to the motor dysfunctions, CHMP2Bintron5 mice progressively developed FTD-relevant behavioural modifications such as disinhibition, stereotypies, decrease in social interactions, compulsivity and change in dietary preferences. Furthermore, neurons in the affected spinal cord and brain regions showed accumulation of p62-positive cytoplasmic inclusions associated or not with ubiquitin and CHMP2Bintron5 As observed in FTD3 patients, these inclusions were negative for TDP-43 and FUS. Moreover, astrogliosis and microgliosis developed with age. Altogether, these data indicate that the neuronal expression of human CHMP2Bintron5 in areas involved in motor and cognitive functions induces progressive motor alterations associated with dementia symptoms and with histopathological hallmarks reminiscent of both ALS and FTD.
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Affiliation(s)
- Aurélia Vernay
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, F-67000 Strasbourg, France.,Université de Strasbourg, UMRS1118, Faculté de Médecine, Fédération de Médecine Translationelle de Strasbourg, F-67000 Strasbourg, France
| | - Ludivine Therreau
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, F-67000 Strasbourg, France.,Université de Strasbourg, UMRS1118, Faculté de Médecine, Fédération de Médecine Translationelle de Strasbourg, F-67000 Strasbourg, France
| | - Béatrice Blot
- INSERM U836, Grenoble Institut des Neurosciences, Université Joseph Fourier, F-38700 La Tronche, France
| | - Valérie Risson
- Laboratoire de Biologie Moléculaire de la Cellule, UMR5239 CNRS/ENS Lyon/UCBL/HCL Ecole normale supérieure de Lyon, F-69364 Lyon Cedex 07, France
| | - Sylvie Dirrig-Grosch
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, F-67000 Strasbourg, France.,Université de Strasbourg, UMRS1118, Faculté de Médecine, Fédération de Médecine Translationelle de Strasbourg, F-67000 Strasbourg, France
| | - Robin Waegaert
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, F-67000 Strasbourg, France.,Université de Strasbourg, UMRS1118, Faculté de Médecine, Fédération de Médecine Translationelle de Strasbourg, F-67000 Strasbourg, France
| | - Thiebault Lequeu
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, F-67000 Strasbourg, France.,Université de Strasbourg, UMRS1118, Faculté de Médecine, Fédération de Médecine Translationelle de Strasbourg, F-67000 Strasbourg, France
| | - François Sellal
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, F-67000 Strasbourg, France.,Neurology department, Hôpitaux civils and CMRR, F-68000 Colmar, France
| | - Laurent Schaeffer
- Laboratoire de Biologie Moléculaire de la Cellule, UMR5239 CNRS/ENS Lyon/UCBL/HCL Ecole normale supérieure de Lyon, F-69364 Lyon Cedex 07, France
| | - Rémy Sadoul
- INSERM U836, Grenoble Institut des Neurosciences, Université Joseph Fourier, F-38700 La Tronche, France
| | - Jean-Philippe Loeffler
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, F-67000 Strasbourg, France.,Université de Strasbourg, UMRS1118, Faculté de Médecine, Fédération de Médecine Translationelle de Strasbourg, F-67000 Strasbourg, France
| | - Frédérique René
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, F-67000 Strasbourg, France .,Université de Strasbourg, UMRS1118, Faculté de Médecine, Fédération de Médecine Translationelle de Strasbourg, F-67000 Strasbourg, France
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