1
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Parra Bravo C, Krukowski K, Barker S, Wang C, Li Y, Fan L, Vázquez-Rosa E, Shin MK, Wong MY, McCullough LD, Kitagawa RS, Choi HA, Cacace A, Sinha SC, Pieper AA, Rosi S, Chen X, Gan L. Anti-acetylated-tau immunotherapy is neuroprotective in tauopathy and brain injury. Mol Neurodegener 2024; 19:51. [PMID: 38915105 PMCID: PMC11197196 DOI: 10.1186/s13024-024-00733-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 05/15/2024] [Indexed: 06/26/2024] Open
Abstract
BACKGROUND Tau is aberrantly acetylated in various neurodegenerative conditions, including Alzheimer's disease, frontotemporal lobar degeneration (FTLD), and traumatic brain injury (TBI). Previously, we reported that reducing acetylated tau by pharmacologically inhibiting p300-mediated tau acetylation at lysine 174 reduces tau pathology and improves cognitive function in animal models. METHODS We investigated the therapeutic efficacy of two different antibodies that specifically target acetylated lysine 174 on tau (ac-tauK174). We treated PS19 mice, which harbor the P301S tauopathy mutation that causes FTLD, with anti-ac-tauK174 and measured effects on tau pathology, neurodegeneration, and neurobehavioral outcomes. Furthermore, PS19 mice received treatment post-TBI to evaluate the ability of the immunotherapy to prevent TBI-induced exacerbation of tauopathy phenotypes. Ac-tauK174 measurements in human plasma following TBI were also collected to establish a link between trauma and acetylated tau levels, and single nuclei RNA-sequencing of post-TBI brain tissues from treated mice provided insights into the molecular mechanisms underlying the observed treatment effects. RESULTS Anti-ac-tauK174 treatment mitigates neurobehavioral impairment and reduces tau pathology in PS19 mice. Ac-tauK174 increases significantly in human plasma 24 h after TBI, and anti-ac-tauK174 treatment of PS19 mice blocked TBI-induced neurodegeneration and preserved memory functions. Anti-ac-tauK174 treatment rescues alterations of microglial and oligodendrocyte transcriptomic states following TBI in PS19 mice. CONCLUSIONS The ability of anti-ac-tauK174 treatment to rescue neurobehavioral impairment, reduce tau pathology, and rescue glial responses demonstrates that targeting tau acetylation at K174 is a promising neuroprotective therapeutic approach to human tauopathies resulting from TBI or genetic disease.
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Affiliation(s)
- Celeste Parra Bravo
- Brain and Mind Research Institute, Helen and Appel Alzheimer Disease Research Institute, Weill Cornell Medicine, New York, NY, USA
- Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY, USA
| | - Karen Krukowski
- Department of Physical Therapy & Rehabilitation Science, Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Sarah Barker
- Brain Health Medicines Center, Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Department of Psychiatry, Case Western Reserve University, Cleveland, OH, USA
- Geriatric Psychiatry, GRECC, Louis Stokes VA Medical Center, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Chao Wang
- Gladstone Institute of Neurological Disease, San Francisco, CA, USA
| | - Yaqiao Li
- Gladstone Institute of Neurological Disease, San Francisco, CA, USA
| | - Li Fan
- Brain and Mind Research Institute, Helen and Appel Alzheimer Disease Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Edwin Vázquez-Rosa
- Brain Health Medicines Center, Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Department of Psychiatry, Case Western Reserve University, Cleveland, OH, USA
- Geriatric Psychiatry, GRECC, Louis Stokes VA Medical Center, Cleveland, OH, USA
| | - Min-Kyoo Shin
- Brain Health Medicines Center, Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Department of Psychiatry, Case Western Reserve University, Cleveland, OH, USA
- Geriatric Psychiatry, GRECC, Louis Stokes VA Medical Center, Cleveland, OH, USA
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Man Ying Wong
- Brain and Mind Research Institute, Helen and Appel Alzheimer Disease Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Louise D McCullough
- Department of Neurology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Ryan S Kitagawa
- Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - H Alex Choi
- Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | | | - Subhash C Sinha
- Brain and Mind Research Institute, Helen and Appel Alzheimer Disease Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Andrew A Pieper
- Brain Health Medicines Center, Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Department of Psychiatry, Case Western Reserve University, Cleveland, OH, USA
- Geriatric Psychiatry, GRECC, Louis Stokes VA Medical Center, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
- Department of Neurosciences, Case Western Reserve University, Cleveland, OH, USA
| | - Susanna Rosi
- Department of Physical Therapy & Rehabilitation Science, Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA.
- Weill Institute for Neuroscience, University of California San Francisco, San Francisco, CA, USA.
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA, USA.
| | - Xu Chen
- Gladstone Institute of Neurological Disease, San Francisco, CA, USA.
- Department of Neurosciences, School of Medicine, University of California, San Diego, USA.
| | - Li Gan
- Brain and Mind Research Institute, Helen and Appel Alzheimer Disease Research Institute, Weill Cornell Medicine, New York, NY, USA.
- Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY, USA.
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2
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Goldberg G, Coelho L, Mo G, Adang LA, Patne M, Chen Z, Garcia-Bassets I, Mesci P, Muotri AR. TREX1 is required for microglial cholesterol homeostasis and oligodendrocyte terminal differentiation in human neural assembloids. Mol Psychiatry 2024; 29:566-579. [PMID: 38129659 PMCID: PMC11153041 DOI: 10.1038/s41380-023-02348-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
Three Prime Repair Exonuclease 1 (TREX1) gene mutations have been associated with Aicardi-Goutières Syndrome (AGS) - a rare, severe pediatric autoimmune disorder that primarily affects the brain and has a poorly understood etiology. Microglia are brain-resident macrophages indispensable for brain development and implicated in multiple neuroinflammatory diseases. However, the role of TREX1 - a DNase that cleaves cytosolic nucleic acids, preventing viral- and autoimmune-related inflammatory responses - in microglia biology remains to be elucidated. Here, we leverage a model of human embryonic stem cell (hESC)-derived engineered microglia-like cells, bulk, and single-cell transcriptomics, optical and transmission electron microscopy, and three-month-old assembloids composed of microglia and oligodendrocyte-containing organoids to interrogate TREX1 functions in human microglia. Our analyses suggest that TREX1 influences cholesterol metabolism, leading to an active microglial morphology with increased phagocytosis in the absence of TREX1. Notably, regulating cholesterol metabolism with an HMG-CoA reductase inhibitor, FDA-approved atorvastatin, rescues these microglial phenotypes. Functionally, TREX1 in microglia is necessary for the transition from gliogenic intermediate progenitors known as pre-oligodendrocyte precursor cells (pre-OPCs) to precursors of the oligodendrocyte lineage known as OPCs, impairing oligodendrogenesis in favor of astrogliogenesis in human assembloids. Together, these results suggest routes for therapeutic intervention in pathologies such as AGS based on microglia-specific molecular and cellular mechanisms.
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Affiliation(s)
- Gabriela Goldberg
- Department of Pediatrics, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
- Department of Cellular & Molecular Medicine, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
- Biomedical Sciences Graduate Program, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Luisa Coelho
- Department of Pediatrics, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Guoya Mo
- Universal Sequencing Technology Corporation, Carlsbad, CA, 92011, USA
| | - Laura A Adang
- Division of Neurology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Meenakshi Patne
- Department of Pediatrics, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Zhoutao Chen
- Universal Sequencing Technology Corporation, Carlsbad, CA, 92011, USA
| | | | - Pinar Mesci
- Department of Pediatrics, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA.
- Axiom Space, Houston, TX, 77058, USA.
| | - Alysson R Muotri
- Department of Pediatrics, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA.
- Department of Cellular & Molecular Medicine, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA.
- Kavli Institute for Brain and Mind, University of California San Diego, La Jolla, CA, 92093, USA.
- Center for Academic Research and Training in Anthropogeny (CARTA) and Archealization (ArchC), University of California San Diego, La Jolla, CA, 92093, USA.
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3
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White matter microglia heterogeneity in the CNS. Acta Neuropathol 2022; 143:125-141. [PMID: 34878590 DOI: 10.1007/s00401-021-02389-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/17/2021] [Accepted: 11/28/2021] [Indexed: 02/07/2023]
Abstract
Microglia, the resident myeloid cells in the central nervous system (CNS) play critical roles in shaping the brain during development, responding to invading pathogens, and clearing tissue debris or aberrant protein aggregations during ageing and neurodegeneration. The original concept that like macrophages, microglia are either damaging (pro-inflammatory) or regenerative (anti-inflammatory) has been updated to a kaleidoscope view of microglia phenotypes reflecting their wide-ranging roles in maintaining homeostasis in the CNS and, their contribution to CNS diseases, as well as aiding repair. The use of new technologies including single cell/nucleus RNA sequencing has led to the identification of many novel microglia states, allowing for a better understanding of their complexity and distinguishing regional variations in the CNS. This has also revealed differences between species and diseases, and between microglia and other myeloid cells in the CNS. However, most of the data on microglia heterogeneity have been generated on cells isolated from the cortex or whole brain, whereas white matter changes and differences between white and grey matter have been relatively understudied. Considering the importance of microglia in regulating white matter health, we provide a brief update on the current knowledge of microglia heterogeneity in the white matter, how microglia are important for the development of the CNS, and how microglial ageing affects CNS white matter homeostasis. We discuss how microglia are intricately linked to the classical white matter diseases such as multiple sclerosis and genetic white matter diseases, and their putative roles in neurodegenerative diseases in which white matter is also affected. Understanding the wide variety of microglial functions in the white matter may provide the basis for microglial targeted therapies for CNS diseases.
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4
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CD8 + T cells induce interferon-responsive oligodendrocytes and microglia in white matter aging. Nat Neurosci 2022; 25:1446-1457. [PMID: 36280798 PMCID: PMC9630119 DOI: 10.1038/s41593-022-01183-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 09/14/2022] [Indexed: 01/13/2023]
Abstract
A hallmark of nervous system aging is a decline of white matter volume and function, but the underlying mechanisms leading to white matter pathology are unknown. In the present study, we found age-related alterations of oligodendrocyte cell state with a reduction in total oligodendrocyte density in aging murine white matter. Using single-cell RNA-sequencing, we identified interferon (IFN)-responsive oligodendrocytes, which localize in proximity to CD8+ T cells in aging white matter. Absence of functional lymphocytes decreased the number of IFN-responsive oligodendrocytes and rescued oligodendrocyte loss, whereas T-cell checkpoint inhibition worsened the aging response. In addition, we identified a subpopulation of lymphocyte-dependent, IFN-responsive microglia in the vicinity of the CD8+ T cells in aging white matter. In summary, we provide evidence that CD8+ T-cell-induced, IFN-responsive oligodendrocytes and microglia are important modifiers of white matter aging.
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5
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Analyzing microglial phenotypes across neuropathologies: a practical guide. Acta Neuropathol 2021; 142:923-936. [PMID: 34623511 PMCID: PMC8498770 DOI: 10.1007/s00401-021-02370-8] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 01/17/2023]
Abstract
As extremely sensitive immune cells, microglia act as versatile watchdogs of the central nervous system (CNS) that tightly control tissue homeostasis. Therefore, microglial activation is an early and easily detectable hallmark of virtually all neuropsychiatric, neuro-oncological, neurodevelopmental, neurodegenerative and neuroinflammatory diseases. The recent introduction of novel high-throughput technologies and several single-cell methodologies as well as advances in epigenetic analyses helped to identify new microglia expression profiles, enhancer-landscapes and local signaling cues that defined diverse previously unappreciated microglia states in the healthy and diseased CNS. Here, we give an overview on the recent developments in the field of microglia biology and provide a practical guide to analyze disease-associated microglia phenotypes in both the murine and human CNS, on several morphological and molecular levels. Finally, technical limitations, potential pitfalls and data misinterpretations are discussed as well.
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6
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Berdowski WM, Sanderson LE, van Ham TJ. The multicellular interplay of microglia in health and disease: lessons from leukodystrophy. Dis Model Mech 2021; 14:dmm048925. [PMID: 34282843 PMCID: PMC8319551 DOI: 10.1242/dmm.048925] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Microglia are highly dynamic cells crucial for developing and maintaining lifelong brain function and health through their many interactions with essentially all cellular components of the central nervous system. The frequent connection of microglia to leukodystrophies, genetic disorders of the white matter, has highlighted their involvement in the maintenance of white matter integrity. However, the mechanisms that underlie their putative roles in these processes remain largely uncharacterized. Microglia have also been gaining attention as possible therapeutic targets for many neurological conditions, increasing the demand to understand their broad spectrum of functions and the impact of their dysregulation. In this Review, we compare the pathological features of two groups of genetic leukodystrophies: those in which microglial dysfunction holds a central role, termed 'microgliopathies', and those in which lysosomal or peroxisomal defects are considered to be the primary driver. The latter are suspected to have notable microglia involvement, as some affected individuals benefit from microglia-replenishing therapy. Based on overlapping pathology, we discuss multiple ways through which aberrant microglia could lead to white matter defects and brain dysfunction. We propose that the study of leukodystrophies, and their extensively multicellular pathology, will benefit from complementing analyses of human patient material with the examination of cellular dynamics in vivo using animal models, such as zebrafish. Together, this will yield important insight into the cell biological mechanisms of microglial impact in the central nervous system, particularly in the development and maintenance of myelin, that will facilitate the development of new, and refinement of existing, therapeutic options for a range of brain diseases.
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Affiliation(s)
| | | | - Tjakko J. van Ham
- Department of Clinical Genetics, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
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7
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Sirkis DW, Bonham LW, Yokoyama JS. The Role of Microglia in Inherited White-Matter Disorders and Connections to Frontotemporal Dementia. Appl Clin Genet 2021; 14:195-207. [PMID: 33833548 PMCID: PMC8020808 DOI: 10.2147/tacg.s245029] [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: 01/30/2021] [Accepted: 03/17/2021] [Indexed: 12/13/2022] Open
Abstract
Microglia play a critical but poorly understood role in promoting white-matter homeostasis. In this review, we leverage advances in human genetics and mouse models of leukodystrophies to delineate our current knowledge and identify outstanding questions regarding the impact of microglia on central nervous system white matter. We first focus on the role of pathogenic mutations in genes, such as TREM2, TYROBP, and CSF1R, that cause leukodystrophies in which the primary deficit is thought to originate in microglia. We next discuss recent advances in disorders such as adrenoleukodystrophy and Krabbe disease, in which microglia play an increasingly recognized role. We conclude by reviewing the roles of GRN and related genes, such as TMEM106B, PSAP, and SORT1, that affect microglial biology and associate with several types of disease, including multiple leukodystrophies as well as forms of frontotemporal dementia (FTD) presenting with white-matter abnormalities. Taken together, mouse and human data support the notion that loss of microglia-facilitated white-matter homeostasis plays an important role in the development of leukodystrophies and suggest novel mechanisms contributing to FTD.
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Affiliation(s)
- Daniel W Sirkis
- Memory and Aging Center, Department of Neurology, University of California San Francisco, San Francisco, CA, 94158, USA
| | - Luke W Bonham
- Memory and Aging Center, Department of Neurology, University of California San Francisco, San Francisco, CA, 94158, USA.,Department of Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, 94158, USA
| | - Jennifer S Yokoyama
- Memory and Aging Center, Department of Neurology, University of California San Francisco, San Francisco, CA, 94158, USA.,Department of Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, 94158, USA
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8
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d'Angelo DM, Di Filippo P, Breda L, Chiarelli F. Type I Interferonopathies in Children: An Overview. Front Pediatr 2021; 9:631329. [PMID: 33869112 PMCID: PMC8044321 DOI: 10.3389/fped.2021.631329] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/05/2021] [Indexed: 01/01/2023] Open
Abstract
Notable advances in gene sequencing methods in recent years have permitted enormous progress in the phenotypic and genotypic characterization of autoinflammatory syndromes. Interferonopathies are a recent group of inherited autoinflammatory diseases, characterized by a dysregulation of the interferon pathway, leading to constitutive upregulation of its activation mechanisms or downregulation of negative regulatory systems. They are clinically heterogeneous, but some peculiar clinical features may lead to suspicion: a familial "idiopathic" juvenile arthritis resistant to conventional treatments, an early necrotizing vasculitis, a non-infectious interstitial lung disease, and a panniculitis associated or not with a lipodystrophy may represent the "interferon alarm bells." The awareness of this group of diseases represents a challenge for pediatricians because, despite being rare, a differential diagnosis with the most common childhood rheumatological and immunological disorders is mandatory. Furthermore, the characterization of interferonopathy molecular pathogenetic mechanisms is allowing important steps forward in other immune dysregulation diseases, such as systemic lupus erythematosus and inflammatory myositis, implementing the opportunity of a more effective target therapy.
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Affiliation(s)
| | | | - Luciana Breda
- Department of Pediatrics, University of Chieti, Chieti, Italy
| | - Francesco Chiarelli
- Department of Pediatrics, University of Chieti, Chieti, Italy
- Center of Excellence on Aging, University of Chieti, Chieti, Italy
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9
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Prinz M, Masuda T, Wheeler MA, Quintana FJ. Microglia and Central Nervous System-Associated Macrophages-From Origin to Disease Modulation. Annu Rev Immunol 2021; 39:251-277. [PMID: 33556248 DOI: 10.1146/annurev-immunol-093019-110159] [Citation(s) in RCA: 232] [Impact Index Per Article: 77.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The immune system of the central nervous system (CNS) consists primarily of innate immune cells. These are highly specialized macrophages found either in the parenchyma, called microglia, or at the CNS interfaces, such as leptomeningeal, perivascular, and choroid plexus macrophages. While they were primarily thought of as phagocytes, their function extends well beyond simple removal of cell debris during development and diseases. Brain-resident innate immune cells were found to be plastic, long-lived, and host to an outstanding number of risk genes for multiple pathologies. As a result, they are now considered the most suitable targets for modulating CNS diseases. Additionally, recent single-cell technologies enhanced our molecular understanding of their origins, fates, interactomes, and functional cell statesduring health and perturbation. Here, we review the current state of our understanding and challenges of the myeloid cell biology in the CNS and treatment options for related diseases.
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Affiliation(s)
- Marco Prinz
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, D-79106 Freiburg, Germany; .,Center for Basics in NeuroModulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, D-79106 Freiburg, Germany.,BIOSS Centre for Biological Signalling Studies and Centre for Integrative Biological Signalling Studies (CIBSS), University of Freiburg, D-79104 Freiburg, Germany
| | - Takahiro Masuda
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, 812-8582 Fukuoka, Japan;
| | - Michael A Wheeler
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA; , .,Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA
| | - Francisco J Quintana
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA; , .,Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA
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10
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Rubino E, Cruciani M, Tchitchek N, Le Tortorec A, Rolland AD, Veli Ö, Vallet L, Gaggi G, Michel F, Dejucq-Rainsford N, Pellegrini S. Human Ubiquitin-Specific Peptidase 18 Is Regulated by microRNAs via the 3'Untranslated Region, A Sequence Duplicated in Long Intergenic Non-coding RNA Genes Residing in chr22q11.21. Front Genet 2021; 11:627007. [PMID: 33633774 PMCID: PMC7901961 DOI: 10.3389/fgene.2020.627007] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 12/30/2020] [Indexed: 12/16/2022] Open
Abstract
Ubiquitin-specific peptidase 18 (USP18) acts as gatekeeper of type I interferon (IFN) responses by binding to the IFN receptor subunit IFNAR2 and preventing activation of the downstream JAK/STAT pathway. In any given cell type, the level of USP18 is a key determinant of the output of IFN-stimulated transcripts. How the baseline level of USP18 is finely tuned in different cell types remains ill defined. Here, we identified microRNAs (miRNAs) that efficiently target USP18 through binding to the 3’untranslated region (3’UTR). Among these, three miRNAs are particularly enriched in circulating monocytes which exhibit low baseline USP18. Intriguingly, the USP18 3’UTR sequence is duplicated in human and chimpanzee genomes. In humans, four USP18 3’UTR copies were previously found to be embedded in long intergenic non-coding (linc) RNA genes residing in chr22q11.21 and known as FAM247A-D. Here, we further characterized their sequence and measured their expression profile in human tissues. Importantly, we describe an additional lincRNA bearing USP18 3’UTR (here linc-UR-B1) that is expressed only in testis. RNA-seq data analyses from testicular cell subsets revealed a positive correlation between linc-UR-B1 and USP18 expression in spermatocytes and spermatids. Overall, our findings uncover a set of miRNAs and lincRNAs, which may be part of a network evolved to fine-tune baseline USP18, particularly in cell types where IFN responsiveness needs to be tightly controlled.
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Affiliation(s)
- Erminia Rubino
- Unit of Cytokine Signaling, Institut Pasteur, INSERM U1221, Paris, France.,École Doctorale Physiologie, Physiopathologie et Thérapeutique, ED394, Sorbonne Université, Paris, France
| | - Melania Cruciani
- Unit of Cytokine Signaling, Institut Pasteur, INSERM U1221, Paris, France
| | - Nicolas Tchitchek
- École Doctorale Physiologie, Physiopathologie et Thérapeutique, ED394, Sorbonne Université, Paris, France.,i3 research unit, Hôpital Pitié-Salpêtrière-Sorbonne Université, Paris, France
| | - Anna Le Tortorec
- UMR_S1085, Institut de recherche en santé, environnement et travail (Irset), EHESP, Inserm, Univ Rennes, Rennes, France
| | - Antoine D Rolland
- UMR_S1085, Institut de recherche en santé, environnement et travail (Irset), EHESP, Inserm, Univ Rennes, Rennes, France
| | - Önay Veli
- Unit of Cytokine Signaling, Institut Pasteur, INSERM U1221, Paris, France
| | - Leslie Vallet
- Unit of Cytokine Signaling, Institut Pasteur, INSERM U1221, Paris, France
| | - Giulia Gaggi
- Unit of Cytokine Signaling, Institut Pasteur, INSERM U1221, Paris, France
| | - Frédérique Michel
- Unit of Cytokine Signaling, Institut Pasteur, INSERM U1221, Paris, France
| | - Nathalie Dejucq-Rainsford
- UMR_S1085, Institut de recherche en santé, environnement et travail (Irset), EHESP, Inserm, Univ Rennes, Rennes, France
| | - Sandra Pellegrini
- Unit of Cytokine Signaling, Institut Pasteur, INSERM U1221, Paris, France
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11
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Roy ER, Cao W. Antiviral Immune Response in Alzheimer's Disease: Connecting the Dots. Front Neurosci 2020; 14:577744. [PMID: 33132831 PMCID: PMC7561672 DOI: 10.3389/fnins.2020.577744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/08/2020] [Indexed: 11/15/2022] Open
Abstract
Alzheimer’s disease (AD) represents an enormous public health challenge currently and with increasing urgency in the coming decades. Our understanding of the etiology and pathogenesis of AD is rather incomplete, which is manifested in stagnated therapeutic developments. Apart from the well-established Amyloid Hypothesis of AD, gaining traction in recent years is the Pathogen Hypothesis, which postulates a causal role of infectious agents in the development of AD. Particularly, infection by viruses, among a diverse range of microorganisms, has been implicated. Recently, we described a prominent antiviral immune response in human AD brains as well as murine amyloid beta models, which has consequential effects on neuropathology. Such findings expectedly allude to the question about viral infections and AD. In this Perspective, we would like to discuss the molecular mechanism underlying the antiviral immune response, highlight how such pathway directly promotes AD pathogenesis, and depict a multilayered connection between antiviral immune response and other agents and factors relevant to AD. By tying together these threads of evidence, we provide a cohesive perspective on the uprising of antiviral immune response in AD.
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Affiliation(s)
- Ethan R Roy
- Huffington Center on Aging and Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
| | - Wei Cao
- Huffington Center on Aging and Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
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12
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Smith C, McColl BW, Patir A, Barrington J, Armishaw J, Clarke A, Eaton J, Hobbs V, Mansour S, Nolan M, Rice GI, Rodero MP, Seabra L, Uggenti C, Livingston JH, Bridges LR, Jeffrey IJM, Crow YJ. Biallelic mutations in NRROS cause an early onset lethal microgliopathy. Acta Neuropathol 2020; 139:947-951. [PMID: 32100099 PMCID: PMC7181551 DOI: 10.1007/s00401-020-02137-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 02/19/2020] [Accepted: 02/19/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Colin Smith
- Academic Department of Neuropathology, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - Barry W McColl
- Centre for Discovery Brain Sciences, UK Dementia Research Institute, University of Edinburgh, Edinburgh, UK
| | - Anirudh Patir
- The Roslin Institute, University of Edinburgh, Edinburgh, UK
| | - Jack Barrington
- Academic Department of Neuropathology, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
- Centre for Discovery Brain Sciences, UK Dementia Research Institute, University of Edinburgh, Edinburgh, UK
| | - Jeremy Armishaw
- Department of Paediatrics, Bay of Plenty District Health Board, Tauranga Hospital, Tauranga, New Zealand
| | - Antonia Clarke
- Paediatric Neurology Department, St Georges Healthcare NHS Trust, London, UK
| | - Jenny Eaton
- Genetic Health Service New Zealand, Auckland District Health Board, Auckland City Hospital, Auckland, New Zealand
| | - Vivienne Hobbs
- Department of Paediatrics, Bay of Plenty District Health Board, Tauranga Hospital, Tauranga, New Zealand
| | - Sahar Mansour
- Department of Clinical Genetics, SW Thames Regional Genetics Service, St George's Hospital, University of London, London, UK
| | - Melinda Nolan
- Department of Paediatric Neurology, Starship Children's Health, Auckland, New Zealand
| | - Gillian I Rice
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Mathieu P Rodero
- Laboratory of Neurogenetics and Neuroinflammation, Institut Imagine, Paris, France
| | - Luis Seabra
- Laboratory of Neurogenetics and Neuroinflammation, Institut Imagine, Paris, France
| | - Carolina Uggenti
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - John H Livingston
- Department of Paediatric Neurology, Leeds General Infirmary, Leeds, UK
| | - Leslie R Bridges
- Department of Cellular Pathology, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Iona J M Jeffrey
- Department of Cellular Pathology, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Yanick J Crow
- Laboratory of Neurogenetics and Neuroinflammation, Institut Imagine, Paris, France.
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK.
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13
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Das S, Ramakrishna S, Kim KS. Critical Roles of Deubiquitinating Enzymes in the Nervous System and Neurodegenerative Disorders. Mol Cells 2020; 43:203-214. [PMID: 32133826 PMCID: PMC7103888 DOI: 10.14348/molcells.2020.2289] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/10/2020] [Accepted: 02/02/2020] [Indexed: 12/15/2022] Open
Abstract
Post-translational modifications play major roles in the stability, function, and localization of target proteins involved in the nervous system. The ubiquitin-proteasome pathway uses small ubiquitin molecules to degrade neuronal proteins. Deubiquitinating enzymes (DUBs) reverse this degradation and thereby control neuronal cell fate, synaptic plasticity,axonal growth, and proper function of the nervous system.Moreover, mutations or downregulation of certain DUBshave been found in several neurodegenerative diseases, as well as gliomas and neuroblastomas. Based on emerging findings, DUBs represent an important target for therapeutic intervention in various neurological disorders. Here, we summarize advances in our understanding of the roles of DUBs related to neurobiology.
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Affiliation(s)
- Soumyadip Das
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul 04763, Korea
| | - Suresh Ramakrishna
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul 04763, Korea
- College of Medicine, Hanyang University, Seoul 04763, Korea
| | - Kye-Seong Kim
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul 04763, Korea
- College of Medicine, Hanyang University, Seoul 04763, Korea
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14
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Jiménez Fernández D, Hess S, Knobeloch KP. Strategies to Target ISG15 and USP18 Toward Therapeutic Applications. Front Chem 2020; 7:923. [PMID: 32039148 PMCID: PMC6985271 DOI: 10.3389/fchem.2019.00923] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 12/18/2019] [Indexed: 12/21/2022] Open
Abstract
The interferon (IFN)-stimulated gene product 15 (ISG15) represents an ubiquitin-like protein (Ubl), which in a process termed ISGylation can be covalently linked to target substrates via a cascade of E1, E2, and E3 enzymes. Furthermore, ISG15 exerts functions in its free form both, as an intracellular and as a secreted protein. In agreement with its role as a type I IFN effector, most functions of ISG15 and ISGylation are linked to the anti-pathogenic response. However, also key roles in other cellular processes such as protein translation, cytoskeleton dynamics, exosome secretion, autophagy or genome stability and cancer were described. Ubiquitin-specific protease 18 (USP18) constitutes the major ISG15 specific protease which counteracts ISG15 conjugation. Remarkably, USP18 also functions as a critical negative regulator of the IFN response irrespective of its enzymatic activity. Concordantly, lack of USP18 function causes fatal interferonopathies in humans and mice. The negative regulatory function of USP18 in IFN signaling is regulated by various protein–protein interactions and its stability is controlled via proteasomal degradation. The broad repertoire of physiological functions and regulation of ISG15 and USP18 offers a variety of potential intervention strategies which might be of therapeutic use. Due to the high mutation rates of pathogens which are often species specific and constantly give rise to a variety of immune evasion mechanisms, immune effector systems are under constant evolutionarily pressure. Therefore, it is not surprising that considerable differences in ISG15 with respect to function and sequence exist even among closely related species. Hence, it is essential to thoroughly evaluate the translational potential of results obtained in model organisms especially for therapeutic strategies. This review covers existing and conceptual assay systems to target and identify modulators of ISG15, ISGylation, USP18 function, and protein–protein interactions within this context. Strategies comprise mouse models for translational perspectives, cell-based and biochemical assays as well as chemical probes.
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Affiliation(s)
| | - Sandra Hess
- Faculty of Medicine, Institute of Neuropathology, University of Freiburg, Freiburg, Germany.,Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Klaus-Peter Knobeloch
- Faculty of Medicine, Institute of Neuropathology, University of Freiburg, Freiburg, Germany
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15
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Brioschi S, Zhou Y, Colonna M. Brain Parenchymal and Extraparenchymal Macrophages in Development, Homeostasis, and Disease. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2020; 204:294-305. [PMID: 31907272 PMCID: PMC7034672 DOI: 10.4049/jimmunol.1900821] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 09/27/2019] [Indexed: 12/23/2022]
Abstract
Microglia are parenchymal macrophages of the CNS; as professional phagocytes they are important for maintenance of the brain's physiology. These cells are generated through primitive hematopoiesis in the yolk sac and migrate into the brain rudiment after establishment of embryonic circulation. Thereafter, microglia develop in a stepwise fashion, reaching complete maturity after birth. In the CNS, microglia self-renew without input from blood monocytes. Recent RNA-sequencing studies have defined a molecular signature for microglia under homeostasis. However, during disease, microglia undergo remarkable phenotypic changes, which reflect the acquisition of specialized functions tailored to the pathological context. In addition to microglia, the brain-border regions host populations of extraparenchymal macrophages with disparate origins and phenotypes that have recently been delineated. In this review we outline recent findings that provide a deeper understanding of both parenchymal microglia and extraparenchymal brain macrophages in homeostasis and during disease.
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Affiliation(s)
- Simone Brioschi
- Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, MO 63110
| | - Yingyue Zhou
- Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, MO 63110
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, MO 63110
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